Set up a GM control panel that can control the currently selected background

Reviewed-on: #252

.gitignore

@@ -2,3 +2,10 @@ target
 .direnv/
 node_modules
 dist
+result
+*.tgz
+*.tar.gz
+*.sqlite
+*.sqlite-shm
+*.sqlite-wal
+file-service/var

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "rust-analyzer.showUnlinkedFileNotification": false
+}

Cargo.toml

@@ -0,0 +1,37 @@
+[workspace]
+resolver = "2"
+members = [
+    "authdb",
+    # "bike-lights/bike",
+    "bike-lights/core",
+    "bike-lights/simulator",
+    "changeset",
+    "config",
+    "config-derive",
+    "coordinates",
+    "cyberpunk",
+    "cyber-slides",
+    "cyberpunk-splash",
+    "dashboard",
+    "emseries",
+    "file-service",
+    "fitnesstrax/core",
+    "fitnesstrax/app",
+    "fluent-ergonomics",
+    "geo-types",
+    "gm-control-panel",
+    "hex-grid",
+    "icon-test",
+    "ifc",
+    "memorycache",
+    "nom-training",
+    "otg/core",
+    "otg/gtk",
+    "result-extended",
+    "screenplay",
+    "sgf",
+    "timezone-testing",
+    "tree",
+    "visions/server",
+    "gm-dash/server"
+]

Makefile

@@ -1,37 +0,0 @@
-
-changeset-dev:
-	cd changeset && make dev
-
-changeset-test:
-	cd changeset && make test
-
-coordinates-dev:
-	cd coordinates && make dev
-
-coordinates-test:
-	cd coordinates && make test
-
-emseries-dev:
-	cd emseries && make dev
-
-emseries-test:
-	cd emseries && make test
-
-flow-dev:
-	cd flow && make dev
-
-flow-test:
-	cd flow && make test
-
-fluent-ergonomics-dev:
-	cd fluent-ergonomics && make dev
-
-fluent-ergonomics-test:
-	cd fluent-ergonomics && make test
-
-ifc-dev:
-	cd ifc && make dev
-
-ifc-test:
-	cd ifc && make test
-

authdb/Cargo.toml

@@ -0,0 +1,29 @@
+[package]
+name = "authdb"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "authdb"
+path = "src/lib.rs"
+
+[[bin]]
+name = "auth-cli"
+path = "src/bin/cli.rs"
+
+[dependencies]
+base64ct  = { version = "1", features = [ "alloc" ] }
+clap      = { version = "4", features = [ "derive" ] }
+serde     = { version = "1.0", features = ["derive"] }
+sha2      = { version = "0.10" }
+sqlx      = { version = "0.7", features = [ "runtime-tokio", "sqlite" ] }
+# sqlformat introduced a mistaken breaking change in 0.2.7
+sqlformat = { version = "=0.2.6" }
+thiserror = { version = "1" }
+tokio     = { version = "1", features = [ "full" ] }
+uuid      = { version = "0.4", features = [ "serde", "v4" ] }
+
+[dev-dependencies]
+cool_asserts = "*"

authdb/migrations/20231003154201_initial_auth_db.sql

@@ -0,0 +1,11 @@
+CREATE TABLE IF NOT EXISTS users (
+    id          INTEGER PRIMARY KEY NOT NULL,
+    username    TEXT NOT NULL,
+    token       TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS sessions (
+    token       TEXT NOT NULL,
+    user_id     INTEGER,
+    FOREIGN KEY(user_id) REFERENCES users(id)
+);

authdb/src/bin/cli.rs

@@ -0,0 +1,40 @@
+use authdb::{AuthDB, Username};
+use clap::{Parser, Subcommand};
+use std::path::PathBuf;
+
+#[derive(Subcommand, Debug)]
+enum Commands {
+    AddUser { username: String },
+    DeleteUser { username: String },
+    ListUsers,
+}
+
+#[derive(Parser, Debug)]
+struct Args {
+    #[command(subcommand)]
+    command: Commands,
+}
+
+#[tokio::main]
+pub async fn main() {
+    let args = Args::parse();
+    let authdb = AuthDB::new(PathBuf::from(&std::env::var("AUTHDB").unwrap()))
+        .await
+        .expect("to be able to open the database");
+
+    match args.command {
+        Commands::AddUser { username } => {
+            match authdb.add_user(Username::from(username.clone())).await {
+                Ok(token) => {
+                    println!("User {} created. Auth token: {}", username, *token);
+                }
+                Err(err) => {
+                    println!("Could not create user {}", username);
+                    println!("\tError: {:?}", err);
+                }
+            }
+        }
+        Commands::DeleteUser { .. } => {}
+        Commands::ListUsers => {}
+    }
+}

authdb/src/lib.rs

@@ -0,0 +1,302 @@
+use base64ct::{Base64, Encoding};
+use serde::{Deserialize, Serialize};
+use sha2::{Digest, Sha256};
+use sqlx::{
+    sqlite::{SqlitePool, SqliteRow},
+    Row,
+};
+use std::ops::Deref;
+use std::path::PathBuf;
+use thiserror::Error;
+use uuid::Uuid;
+
+#[derive(Debug, Error)]
+pub enum AuthError {
+    #[error("authentication token is duplicated")]
+    DuplicateAuthToken,
+
+    #[error("session token is duplicated")]
+    DuplicateSessionToken,
+
+    #[error("database failed")]
+    SqlError(sqlx::Error),
+}
+
+impl From<sqlx::Error> for AuthError {
+    fn from(err: sqlx::Error) -> AuthError {
+        AuthError::SqlError(err)
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, Hash, PartialEq, Eq)]
+pub struct Username(String);
+
+impl From<String> for Username {
+    fn from(s: String) -> Self {
+        Self(s)
+    }
+}
+
+impl From<&str> for Username {
+    fn from(s: &str) -> Self {
+        Self(s.to_owned())
+    }
+}
+
+impl From<Username> for String {
+    fn from(s: Username) -> Self {
+        Self::from(&s)
+    }
+}
+
+impl From<&Username> for String {
+    fn from(s: &Username) -> Self {
+        let Username(s) = s;
+        Self::from(s)
+    }
+}
+
+impl Deref for Username {
+    type Target = String;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl sqlx::FromRow<'_, SqliteRow> for Username {
+    fn from_row(row: &SqliteRow) -> sqlx::Result<Self> {
+        let name: String = row.try_get("username")?;
+        Ok(Username::from(name))
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, Hash, PartialEq, Eq)]
+pub struct AuthToken(String);
+
+impl From<String> for AuthToken {
+    fn from(s: String) -> Self {
+        Self(s)
+    }
+}
+
+impl From<&str> for AuthToken {
+    fn from(s: &str) -> Self {
+        Self(s.to_owned())
+    }
+}
+
+impl From<AuthToken> for PathBuf {
+    fn from(s: AuthToken) -> Self {
+        Self::from(&s)
+    }
+}
+
+impl From<&AuthToken> for PathBuf {
+    fn from(s: &AuthToken) -> Self {
+        let AuthToken(s) = s;
+        Self::from(s)
+    }
+}
+
+impl Deref for AuthToken {
+    type Target = String;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, Hash, PartialEq, Eq)]
+pub struct SessionToken(String);
+
+impl From<String> for SessionToken {
+    fn from(s: String) -> Self {
+        Self(s)
+    }
+}
+
+impl From<&str> for SessionToken {
+    fn from(s: &str) -> Self {
+        Self(s.to_owned())
+    }
+}
+
+impl From<SessionToken> for PathBuf {
+    fn from(s: SessionToken) -> Self {
+        Self::from(&s)
+    }
+}
+
+impl From<&SessionToken> for PathBuf {
+    fn from(s: &SessionToken) -> Self {
+        let SessionToken(s) = s;
+        Self::from(s)
+    }
+}
+
+impl Deref for SessionToken {
+    type Target = String;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[derive(Clone)]
+pub struct AuthDB {
+    pool: SqlitePool,
+}
+
+impl AuthDB {
+    pub async fn new(path: PathBuf) -> Result<Self, sqlx::Error> {
+        let migrator = sqlx::migrate!("./migrations");
+        let pool = SqlitePool::connect(&format!("sqlite://{}", path.to_str().unwrap())).await?;
+        migrator.run(&pool).await?;
+        Ok(Self { pool })
+    }
+
+    pub async fn add_user(&self, username: Username) -> Result<AuthToken, AuthError> {
+        let mut hasher = Sha256::new();
+        hasher.update(Uuid::new_v4().hyphenated().to_string());
+        hasher.update(username.to_string());
+        let auth_token = Base64::encode_string(&hasher.finalize());
+
+        let _ = sqlx::query("INSERT INTO users (username, token) VALUES ($1, $2)")
+            .bind(username.to_string())
+            .bind(auth_token.clone())
+            .execute(&self.pool)
+            .await?;
+
+        Ok(AuthToken::from(auth_token))
+    }
+
+    pub async fn list_users(&self) -> Result<Vec<Username>, AuthError> {
+        let usernames = sqlx::query_as::<_, Username>("SELECT (username) FROM users")
+            .fetch_all(&self.pool)
+            .await?;
+
+        Ok(usernames)
+    }
+
+    pub async fn authenticate(&self, token: AuthToken) -> Result<Option<SessionToken>, AuthError> {
+        let results = sqlx::query("SELECT * FROM users WHERE token = $1")
+            .bind(token.to_string())
+            .fetch_all(&self.pool)
+            .await?;
+
+        if results.len() > 1 {
+            return Err(AuthError::DuplicateAuthToken);
+        }
+
+        if results.is_empty() {
+            return Ok(None);
+        }
+
+        let user_id: i64 = results[0].try_get("id")?;
+
+        let mut hasher = Sha256::new();
+        hasher.update(Uuid::new_v4().hyphenated().to_string());
+        hasher.update(token.to_string());
+        let session_token = Base64::encode_string(&hasher.finalize());
+
+        let _ = sqlx::query("INSERT INTO sessions (token, user_id) VALUES ($1, $2)")
+            .bind(session_token.clone())
+            .bind(user_id)
+            .execute(&self.pool)
+            .await?;
+
+        Ok(Some(SessionToken::from(session_token)))
+    }
+
+    pub async fn validate_session(
+        &self,
+        token: SessionToken,
+    ) -> Result<Option<Username>, AuthError> {
+        let rows = sqlx::query(
+            "SELECT users.username FROM sessions INNER JOIN users ON sessions.user_id = users.id WHERE sessions.token = $1",
+        )
+        .bind(token.to_string())
+        .fetch_all(&self.pool)
+        .await?;
+        if rows.len() > 1 {
+            return Err(AuthError::DuplicateSessionToken);
+        }
+
+        if rows.is_empty() {
+            return Ok(None);
+        }
+
+        let username: String = rows[0].try_get("username")?;
+        Ok(Some(Username::from(username)))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use cool_asserts::assert_matches;
+    use std::collections::HashSet;
+
+    #[tokio::test]
+    async fn can_create_and_list_users() {
+        let db = AuthDB::new(PathBuf::from(":memory:"))
+            .await
+            .expect("a memory-only database will be created");
+        let _ = db
+            .add_user(Username::from("savanni"))
+            .await
+            .expect("user to be created");
+        assert_matches!(db.list_users().await, Ok(names) => {
+            let names = names.into_iter().collect::<HashSet<Username>>();
+            assert!(names.contains(&Username::from("savanni")));
+        })
+    }
+
+    #[tokio::test]
+    async fn unknown_auth_token_returns_nothing() {
+        let db = AuthDB::new(PathBuf::from(":memory:"))
+            .await
+            .expect("a memory-only database will be created");
+        let _ = db
+            .add_user(Username::from("savanni"))
+            .await
+            .expect("user to be created");
+
+        let token = AuthToken::from("0000000000");
+
+        assert_matches!(db.authenticate(token).await, Ok(None));
+    }
+
+    #[tokio::test]
+    async fn auth_token_becomes_session_token() {
+        let db = AuthDB::new(PathBuf::from(":memory:"))
+            .await
+            .expect("a memory-only database will be created");
+        let token = db
+            .add_user(Username::from("savanni"))
+            .await
+            .expect("user to be created");
+
+        assert_matches!(db.authenticate(token).await, Ok(_));
+    }
+
+    #[tokio::test]
+    async fn can_validate_session_token() {
+        let db = AuthDB::new(PathBuf::from(":memory:"))
+            .await
+            .expect("a memory-only database will be created");
+        let token = db
+            .add_user(Username::from("savanni"))
+            .await
+            .expect("user to be created");
+        let session = db
+            .authenticate(token)
+            .await
+            .expect("token authentication should succeed")
+            .expect("session token should be found");
+
+        assert_matches!(
+        db.validate_session(session).await,
+        Ok(Some(username)) => {
+            assert_eq!(username, Username::from("savanni"));
+        });
+    }
+}

bike-lights/bike/.cargo/config

@@ -0,0 +1,12 @@
+[build]
+target = "thumbv6m-none-eabi"
+
+[target.thumbv6m-none-eabi]
+rustflags = [
+    "-C", "link-arg=--nmagic",
+    "-C", "link-arg=-Tlink.x",
+    "-C", "inline-threshold=5",
+    "-C", "no-vectorize-loops",
+]
+
+runner = "elf2uf2-rs -d"

bike-lights/bike/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "bike"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+az              = { version = "1" }
+cortex-m-rt     = { version = "0.7.3" }
+cortex-m        = { version = "0.7.7" }
+embedded-alloc  = { version = "0.5.1" }
+embedded-hal    = { version = "0.2.7" }
+fixed           = { version = "1" }
+fugit           = { version = "0.3.7" }
+lights-core     = { path = "../core" }
+panic-halt      = { version = "0.2.0" }
+rp-pico         = { version = "0.8.0" }

bike-lights/bike/src/main.rs

@@ -0,0 +1,244 @@
+#![no_main]
+#![no_std]
+
+extern crate alloc;
+
+use alloc::boxed::Box;
+use az::*;
+use core::cell::RefCell;
+use cortex_m::delay::Delay;
+use embedded_alloc::Heap;
+use embedded_hal::{blocking::spi::Write, digital::v2::InputPin, digital::v2::OutputPin};
+use fixed::types::I16F16;
+use fugit::RateExtU32;
+use lights_core::{App, BodyPattern, DashboardPattern, Event, Instant, FPS, UI};
+use panic_halt as _;
+use rp_pico::{
+    entry,
+    hal::{
+        clocks::init_clocks_and_plls,
+        gpio::{FunctionSio, Pin, PinId, PullDown, PullUp, SioInput, SioOutput},
+        pac::{CorePeripherals, Peripherals},
+        spi::{Enabled, Spi, SpiDevice, ValidSpiPinout},
+        watchdog::Watchdog,
+        Clock, Sio,
+    },
+    Pins,
+};
+
+#[global_allocator]
+static HEAP: Heap = Heap::empty();
+
+const LIGHT_SCALE: I16F16 = I16F16::lit("256.0");
+const DASHBOARD_BRIGHTESS: u8 = 1;
+const BODY_BRIGHTNESS: u8 = 8;
+
+struct DebouncedButton<P: PinId> {
+    debounce: Instant,
+    pin: Pin<P, FunctionSio<SioInput>, PullUp>,
+}
+
+impl<P: PinId> DebouncedButton<P> {
+    fn new(pin: Pin<P, FunctionSio<SioInput>, PullUp>) -> Self {
+        Self {
+            debounce: Instant((0 as u32).into()),
+            pin,
+        }
+    }
+
+    fn is_low(&self, time: Instant) -> bool {
+        if time <= self.debounce {
+            return false;
+        }
+        self.pin.is_low().unwrap_or(false)
+    }
+
+    fn set_debounce(&mut self, time: Instant) {
+        self.debounce = time + Instant((250 as u32).into());
+    }
+}
+
+struct BikeUI<
+    D: SpiDevice,
+    P: ValidSpiPinout<D>,
+    LeftId: PinId,
+    RightId: PinId,
+    PreviousId: PinId,
+    NextId: PinId,
+    BrakeId: PinId,
+> {
+    spi: RefCell<Spi<Enabled, D, P, 8>>,
+    left_blinker_button: DebouncedButton<LeftId>,
+    right_blinker_button: DebouncedButton<RightId>,
+    previous_animation_button: DebouncedButton<PreviousId>,
+    next_animation_button: DebouncedButton<NextId>,
+    brake_sensor: Pin<BrakeId, FunctionSio<SioInput>, PullUp>,
+
+    brake_enabled: bool,
+}
+
+impl<
+        D: SpiDevice,
+        P: ValidSpiPinout<D>,
+        LeftId: PinId,
+        RightId: PinId,
+        PreviousId: PinId,
+        NextId: PinId,
+        BrakeId: PinId,
+    > BikeUI<D, P, LeftId, RightId, PreviousId, NextId, BrakeId>
+{
+    fn new(
+        spi: Spi<Enabled, D, P, 8>,
+        left_blinker_button: Pin<LeftId, FunctionSio<SioInput>, PullUp>,
+        right_blinker_button: Pin<RightId, FunctionSio<SioInput>, PullUp>,
+        previous_animation_button: Pin<PreviousId, FunctionSio<SioInput>, PullUp>,
+        next_animation_button: Pin<NextId, FunctionSio<SioInput>, PullUp>,
+        brake_sensor: Pin<BrakeId, FunctionSio<SioInput>, PullUp>,
+    ) -> Self {
+        Self {
+            spi: RefCell::new(spi),
+            left_blinker_button: DebouncedButton::new(left_blinker_button),
+            right_blinker_button: DebouncedButton::new(right_blinker_button),
+            previous_animation_button: DebouncedButton::new(previous_animation_button),
+            next_animation_button: DebouncedButton::new(next_animation_button),
+            brake_sensor,
+
+            brake_enabled: false,
+        }
+    }
+}
+
+impl<
+        D: SpiDevice,
+        P: ValidSpiPinout<D>,
+        LeftId: PinId,
+        RightId: PinId,
+        PreviousId: PinId,
+        NextId: PinId,
+        BrakeId: PinId,
+    > UI for BikeUI<D, P, LeftId, RightId, PreviousId, NextId, BrakeId>
+{
+    fn check_event(&mut self, current_time: Instant) -> Option<Event> {
+        /*
+        if self.brake_sensor.is_high().unwrap_or(true) && !self.brake_enabled {
+            self.brake_enabled = true;
+            Some(Event::Brake)
+        } else if self.brake_sensor.is_low().unwrap_or(false) && self.brake_enabled {
+            self.brake_enabled = false;
+            Some(Event::BrakeRelease)
+        } else if self.left_blinker_button.is_low(current_time) {
+        */
+        if self.left_blinker_button.is_low(current_time) {
+            self.left_blinker_button.set_debounce(current_time);
+            Some(Event::LeftBlinker)
+        } else if self.right_blinker_button.is_low(current_time) {
+            self.right_blinker_button.set_debounce(current_time);
+            Some(Event::RightBlinker)
+        } else if self.previous_animation_button.is_low(current_time) {
+            self.previous_animation_button.set_debounce(current_time);
+            Some(Event::PreviousPattern)
+        } else if self.next_animation_button.is_low(current_time) {
+            self.next_animation_button.set_debounce(current_time);
+            Some(Event::NextPattern)
+        } else {
+            None
+        }
+    }
+
+    fn update_lights(&self, dashboard_lights: DashboardPattern, body_lights: BodyPattern) {
+        let mut lights: [u8; 260] = [0; 260];
+        lights[256] = 0xff;
+        lights[257] = 0xff;
+        lights[258] = 0xff;
+        lights[259] = 0xff;
+        for (idx, rgb) in dashboard_lights.iter().enumerate() {
+            lights[(idx + 1) * 4 + 0] = 0xe0 + DASHBOARD_BRIGHTESS;
+            lights[(idx + 1) * 4 + 1] = (I16F16::from(rgb.r) * LIGHT_SCALE).saturating_as();
+            lights[(idx + 1) * 4 + 2] = (I16F16::from(rgb.b) * LIGHT_SCALE).saturating_as();
+            lights[(idx + 1) * 4 + 3] = (I16F16::from(rgb.g) * LIGHT_SCALE).saturating_as();
+        }
+        for (idx, rgb) in body_lights.iter().enumerate() {
+            lights[(idx + 4) * 4 + 0] = 0xe0 + BODY_BRIGHTNESS;
+            lights[(idx + 4) * 4 + 1] = (I16F16::from(rgb.b) * LIGHT_SCALE).saturating_as();
+            lights[(idx + 4) * 4 + 2] = (I16F16::from(rgb.g) * LIGHT_SCALE).saturating_as();
+            lights[(idx + 4) * 4 + 3] = (I16F16::from(rgb.r) * LIGHT_SCALE).saturating_as();
+        }
+        let mut spi = self.spi.borrow_mut();
+        spi.write(lights.as_slice());
+    }
+}
+
+#[entry]
+fn main() -> ! {
+    {
+        use core::mem::MaybeUninit;
+        const HEAP_SIZE: usize = 8096;
+        static mut HEAP_MEM: [MaybeUninit<u8>; HEAP_SIZE] = [MaybeUninit::uninit(); HEAP_SIZE];
+        unsafe { HEAP.init(HEAP_MEM.as_ptr() as usize, HEAP_SIZE) }
+    }
+
+    let mut pac = Peripherals::take().unwrap();
+    let core = CorePeripherals::take().unwrap();
+    let sio = Sio::new(pac.SIO);
+    let mut watchdog = Watchdog::new(pac.WATCHDOG);
+
+    let pins = Pins::new(
+        pac.IO_BANK0,
+        pac.PADS_BANK0,
+        sio.gpio_bank0,
+        &mut pac.RESETS,
+    );
+
+    let clocks = init_clocks_and_plls(
+        12_000_000u32,
+        pac.XOSC,
+        pac.CLOCKS,
+        pac.PLL_SYS,
+        pac.PLL_USB,
+        &mut pac.RESETS,
+        &mut watchdog,
+    )
+    .ok()
+    .unwrap();
+
+    let mut delay = Delay::new(core.SYST, clocks.system_clock.freq().to_Hz());
+    let mut spi_clk = pins.gpio10.into_function();
+    let mut spi_sdo = pins.gpio11.into_function();
+    let spi = Spi::<_, _, _, 8>::new(pac.SPI1, (spi_sdo, spi_clk));
+    let mut spi = spi.init(
+        &mut pac.RESETS,
+        clocks.peripheral_clock.freq(),
+        1_u32.MHz(),
+        embedded_hal::spi::MODE_1,
+    );
+
+    let left_blinker_button = pins.gpio16.into_pull_up_input();
+    let right_blinker_button = pins.gpio17.into_pull_up_input();
+    let previous_animation_button = pins.gpio27.into_pull_up_input();
+    let next_animation_button = pins.gpio26.into_pull_up_input();
+    let brake_sensor = pins.gpio18.into_pull_up_input();
+
+    let mut led_pin = pins.led.into_push_pull_output();
+
+    let ui = BikeUI::new(
+        spi,
+        left_blinker_button,
+        right_blinker_button,
+        previous_animation_button,
+        next_animation_button,
+        brake_sensor,
+    );
+
+    let mut app = App::new(Box::new(ui));
+
+    led_pin.set_high();
+
+    let mut time = Instant::default();
+    let delay_ms = 1000 / (FPS as u32);
+    loop {
+        app.tick(time);
+
+        delay.delay_ms(delay_ms);
+        time = time + Instant(delay_ms.into());
+    }
+}

bike-lights/case/battery_enclosure.scad

@@ -0,0 +1,158 @@
+$fn = 50;
+threshold = 0.1;
+half_threshold = threshold / 2;
+bevel = 0.5;
+
+wire_radius = 1;
+
+wall_thickness = 2;
+cutout_threshold = 1;
+
+battery_length = 71;
+battery_width = 18.75;
+
+cell_holder_length = battery_length + wall_thickness * 2;
+cell_holder_width = battery_width + wall_thickness * 2;
+cell_holder_height = battery_width + wall_thickness;
+
+battery_contact_thickness = .6;
+// battery_contact_thickness = 1;
+battery_contact_width = 11;
+battery_contact_length = 12.8;
+battery_contact_spring_height = 10.5;
+battery_contact_flange_height = 1.9;
+
+converter_width = 11.25;
+converter_length = 22.25;
+converter_height = 5;
+
+
+include <./common.scad>;
+
+// box(20, 10, 10);
+// color("blue", 0.5) cube([10, 20, 10], center = true);
+
+module cell_cradle(width, height) {
+    difference() {
+        translate([0, 0, -height / 2]) cube([width,
+              wall_thickness,
+              height],
+             center = true);
+        color("red", 1) translate([0, 0, 0])
+            rotate([90, 0, 0])
+            cylinder(h = wall_thickness + cutout_threshold,
+                      r = width / 2,
+                      center = true);
+    }
+}
+
+module cell_box() {
+    union() {
+        channel(cell_holder_length, cell_holder_width, cell_holder_height);
+        translate([0, -battery_length / 6, wall_thickness]) cell_cradle(cell_holder_width, cell_holder_height / 2);
+        translate([0, battery_length / 6, wall_thickness]) cell_cradle(cell_holder_width, cell_holder_height / 2);
+    }
+}
+
+module contact_box() {
+    contact_thickness = battery_contact_flange_height * .75;
+    cutout_width = battery_contact_width * .8;
+    // box_thickness = contact_thickness_ + wall_thickness * 2;
+    // box_height = width + wall_thickness;
+
+    difference() {
+        box(wall_thickness * 2 + contact_thickness, cell_holder_width, cell_holder_height);
+        translate([0, contact_thickness, wall_thickness * 2])
+            cube([battery_contact_width,
+                  wall_thickness * 2,
+                  battery_contact_length + threshold],
+                 center = true);
+
+        color("red", 1) translate([0,
+                   -(wall_thickness + contact_thickness + threshold) / 2,
+                   cell_holder_height / 2])
+                   cube([5, wall_thickness + threshold * 2, cell_holder_height], center = true);
+
+        translate([0,
+                   -(wall_thickness + contact_thickness + threshold) / 2 - wire_radius,
+                   0])
+            rotate([0, 90, 0])
+            cylinder(h = cell_holder_width, r = wire_radius, center = true);
+
+        color("green", 1) translate([-cell_holder_width / 2, 0, cell_holder_height / 2])
+            rotate([0, 90, 0])
+            cylinder(h = 5, r = contact_thickness / 2, center = true);
+
+        color("green", 1) translate([cell_holder_width / 2, 0, cell_holder_height / 2])
+            rotate([0, 90, 0])
+            cylinder(h = 5, r = contact_thickness / 2, center = true);
+    }
+}
+
+module battery_slot() {
+    difference() {
+        union() {
+            translate([0, -cell_holder_length / 2, 0]) contact_box();
+            translate([0, wall_thickness, 0]) cell_box();
+            translate([0, cell_holder_length / 2 + wall_thickness * 2, 0])
+                rotate([0, 0, 180])
+                contact_box();
+        }
+        translate([cell_holder_width / 2, 1, 0]) rotate([90, 0, 0]) cylinder(h = cell_holder_length + wall_thickness * 4 + battery_contact_flange_height * 2, r = wire_radius, center = true);
+        translate([-cell_holder_width / 2, 1, 0]) rotate([90, 0, 0]) cylinder(h = cell_holder_length + wall_thickness * 4 + battery_contact_flange_height * 2, r = wire_radius, center = true);
+    }
+}
+
+module converter_box() {
+    box_length = wall_thickness * 2 + converter_height;
+    box_width = cell_holder_width * 2 - wall_thickness;
+    difference() {
+        box(box_length, box_width, cell_holder_height);
+
+        translate([cell_holder_width - wire_radius, 0, 0])
+            rotate([90, 0, 0])
+            cylinder(h = box_length, r = wire_radius, center = true);
+        translate([cell_holder_width - wire_radius * 2, 0, 0])
+            rotate([0, 90, 0])
+            cylinder(h = wall_thickness + threshold, r = wire_radius, center = true);
+
+        translate([-cell_holder_width + wire_radius, 0, 0])
+            rotate([90, 0, 0])
+            cylinder(h = box_length, r = wire_radius, center = true);
+        translate([-cell_holder_width + wire_radius * 2, 0, 0])
+            rotate([0, 90, 0])
+            cylinder(h = wall_thickness + threshold, r = wire_radius, center = true);
+
+        translate([0, -box_length / 2, 0])
+            rotate([0, 90, 0])
+            cylinder(h = cell_holder_width * 2 + wall_thickness, r = wire_radius, center = true);
+
+        translate([-cell_holder_width * .75, (-box_length + wall_thickness) / 2, 0])
+            rotate([90, 0, 0])
+            cylinder(h = wall_thickness * 2, r = wire_radius, center = true);
+
+        translate([cell_holder_width * .75, (-box_length + wall_thickness) / 2, 0])
+            rotate([90, 0, 0])
+            cylinder(h = wall_thickness * 2, r = wire_radius, center = true);
+
+        color("red", 1) translate([-box_width / 4, -(converter_height + wall_thickness) / 2, cell_holder_height / 2])
+                   cube([5, wall_thickness + threshold * 2, cell_holder_height], center = true);
+        color("red", 1) translate([box_width / 4, -(converter_height + wall_thickness) / 2, cell_holder_height / 2])
+                   cube([5, wall_thickness + threshold * 2, cell_holder_height], center = true);
+    }
+}
+
+module battery_case() {
+    union() {
+        translate([-cell_holder_width / 2, 0, 0]) battery_slot();
+        translate([cell_holder_width / 2 - wall_thickness, 0, 0]) battery_slot();
+        translate([-wall_thickness / 2,
+                   cell_holder_length / 2 + wall_thickness * 2 + battery_contact_flange_height + wall_thickness * 2 + wall_thickness / 2,
+                   0])
+            converter_box();
+    }
+}
+
+
+battery_case();
+

bike-lights/case/bike-light-enclosure.scad

@@ -0,0 +1,174 @@
+width = 65;
+length = 75;
+height = 16;
+wall_thickness = 2;
+guide_thickness = 1;
+power_width = 21;
+output_width = 37.5;
+half_wall_thickness = wall_thickness / 2;
+standoff_thickness = 10;
+hole_diameter = 3;
+// The radius of a nut in mm. However, based on my measurements, I'm not actually sure I have this right. The short height of a nut is 7.86mm. Derive from there.
+nut_radius = 8.5 * cos(30) / 2;
+nut_height = 2.69; // mm
+screw_radius = 2;
+handlebar_radius = 15;
+clasp_thickness = 4;
+clasp_width = 35;
+circular_face_count = 48;
+
+module hexagon(r, h) {
+    pi = 3.1415926;
+    polyhedron(
+        points=[
+            [r, 0, 0],
+            [r * cos(60), r * sin(60), 0],
+            [r * cos(120), r * sin(120), 0],
+            [r * cos(180), r * sin(180), 0],
+            [r * cos(240), r * sin(240), 0],
+            [r * cos(300), r * sin(300), 0],
+
+            [r, 0, h],
+            [r * cos(60), r * sin(60), h],
+            [r * cos(120), r * sin(120), h],
+            [r * cos(180), r * sin(180), h],
+            [r * cos(240), r * sin(240), h],
+            [r * cos(300), r * sin(300), h],
+        ],
+        faces=[
+            [0, 1, 2, 3, 4, 5],
+            [11, 10, 9, 8, 7, 6],
+            [6, 7, 1, 0],
+            [7, 8, 2, 1],
+            [8, 9, 3, 2],
+            [9, 10, 4, 3],
+            [10, 11, 5, 4],
+            [11, 6, 0, 5],
+        ]
+    );
+}
+
+// Nut holders are blocks that have a hole drilled through them and a hexagonal-shaped cavity. The idea is to 
+module nut_holder() {
+    difference() {
+        translate([-4.5, -4.5, -2]) cube([9, 9, 4]);
+        union() {
+            translate([0, 0, -1]) hexagon(nut_radius, 2);
+            cylinder(h = 6, r = screw_radius, center = true, $fn = 24);
+        }
+    }
+}
+
+module screw_hole() {
+    union() {
+        translate([0, 0, 4]) cylinder(h = 2.1, r = screw_radius * 2, center = true, $fn = 24);
+        cylinder(h = 6, r = screw_radius, center = true, $fn = 24);
+    }
+}
+
+module base() {
+    cube([width, length, wall_thickness]);
+}
+
+module face() {
+    union() {
+        cube([width, length, wall_thickness / 2]);
+        translate([wall_thickness, wall_thickness, wall_thickness / 2]) cube([width-wall_thickness*2, length-wall_thickness*2, wall_thickness / 2]);
+        translate([4.5 + wall_thickness, 4.5 + wall_thickness, 4]) nut_holder();
+        translate([width - 4.5 - wall_thickness, 4.5 + wall_thickness, 4]) nut_holder();
+        translate([width - 4.5 - wall_thickness, length - 4.5 - wall_thickness, 4]) nut_holder();
+        translate([4.5 + wall_thickness, length - 4.5 - wall_thickness, 4]) nut_holder();
+    }
+}
+
+module wall(length) {
+    cube([length, height, wall_thickness]);
+}
+
+module power_wall() {
+    difference() {
+        wall(65);
+        translate([9, 2, -.5]) cube([power_width, height, wall_thickness + 1]);
+    }
+}
+
+module output_wall() {
+    difference() {
+        wall(65);
+        translate([9, 2, -.5]) cube([output_width, height, wall_thickness + 1]);
+    }
+}
+
+// Use hexagons as cutouts into which I can install a hex nut. This isn't quite right yet, but close.
+// hexagon(nut_radius, 1);
+
+// cube([standoff_thickness, standoff_thickness, 2]);
+
+/*
+difference() {
+    union() {
+        base();
+        rotate([90, 0, 90]) wall(75);
+        // translate([width - wall_thickness, 0, 0]) rotate([90, 0, 90]) wall(length);
+        // rotate([90, 0, 0]) power_wall();
+        // translate([0, length, 0]) rotate([90, 0, 0]) output_wall();
+        // translate([wall_thickness,
+        //            wall_thickness,
+        //            wall_thickness]) standoff();
+        // translate([width - wall_thickness - standoff_thickness,
+        //            wall_thickness,
+        //            wall_thickness]) standoff();
+        // translate([wall_thickness,
+        //            length - wall_thickness - standoff_thickness,
+        //            wall_thickness]) standoff();
+        // translate([width - wall_thickness - standoff_thickness,
+        //            length - wall_thickness - standoff_thickness,
+        //            wall_thickness]) standoff();
+    }
+    // translate([-half_wall_thickness, -wall_thickness - half_wall_thickness, height - half_wall_thickness]) cube([wall_thickness, length + wall_thickness * 2, wall_thickness]);
+    // translate([width - half_wall_thickness, -wall_thickness - half_wall_thickness, height - half_wall_thickness]) cube([wall_thickness, length + wall_thickness * 2, wall_thickness]);
+    // translate([-half_wall_thickness, -half_wall_thickness, height - half_wall_thickness]) rotate([0, 0, 270]) cube([wall_thickness, width + wall_thickness * 2, wall_thickness]);
+    // translate([-half_wall_thickness, length + half_wall_thickness, height - half_wall_thickness]) rotate([0, 0, 270]) cube([wall_thickness, width + wall_thickness * 2, wall_thickness]);
+}
+*/
+
+module box() {
+    difference() {
+        union() {
+            cube([width, length, wall_thickness * 2]);
+            translate([0, 0, wall_thickness]) rotate([90, 0, 90]) wall(length);
+            translate([width - wall_thickness, 0, wall_thickness]) rotate([90, 0, 90]) wall(length);
+            translate([0, wall_thickness, wall_thickness]) rotate([90, 0, 0]) wall(width);
+            translate([0, length, wall_thickness]) rotate([90, 0, 0]) wall(width);
+        }
+        translate([4.5 + wall_thickness, 4.5 + wall_thickness, 4]) rotate([180, 0, 0]) screw_hole();
+        translate([width - 4.5 - wall_thickness, 4.5 + wall_thickness, 4]) rotate([180, 0, 0]) screw_hole();
+        translate([width - 4.5 - wall_thickness, length - 4.5 - wall_thickness, 4]) rotate([180, 0, 0]) screw_hole();
+        translate([4.5 + wall_thickness, length - 4.5 - wall_thickness, 4]) rotate([180, 0, 0]) screw_hole();
+    }
+}
+
+module top_clasp() {
+    difference() {
+        union() {
+            cylinder(h = clasp_width, r = handlebar_radius + clasp_thickness, center = true, $fn = circular_face_count);
+            translate([0, 0, -clasp_width / 2]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([0, 0, -clasp_width / 2 + 4]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([0, 0, clasp_width / 2]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([0, 0, clasp_width / 2 - 4]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([-handlebar_radius-5, -10, -clasp_width / 2 + 6]) cube([6, 20, clasp_width - 12]);
+        }
+        translate([-0.5, 0, 0]) cylinder(h = clasp_width+2, r = handlebar_radius + 1, center = true, $fn = circular_face_count);
+        translate([-0.5, -handlebar_radius - 10, -clasp_width / 2 - 1]) cube([handlebar_radius + 10, handlebar_radius * 2 + 20, clasp_width + 2]);
+    }
+}
+
+module body() {
+    union() {
+        box();
+        translate([width / 2, length / 2, -5 - handlebar_radius]) rotate([0, 90, 90]) top_clasp();
+    }
+}
+
+body();
+translate([width + 10, 0, 0]) face();

bike-lights/case/clasp.scad

@@ -0,0 +1,21 @@
+handlebar_radius = 15;
+clasp_thickness = 4;
+circular_face_count = 48;
+clasp_width = 35;
+
+module top_clasp() {
+    difference() {
+        union() {
+            cylinder(h = clasp_width, r = handlebar_radius + clasp_thickness, center = true, $fn = circular_face_count);
+            translate([0, 0, -clasp_width / 2]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([0, 0, -clasp_width / 2 + 4]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([0, 0, clasp_width / 2]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([0, 0, clasp_width / 2 - 4]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([-handlebar_radius-5, -10, -clasp_width / 2 + 6]) cube([6, 20, clasp_width - 12]);
+        }
+        translate([-0.5, 0, 0]) cylinder(h = clasp_width+2, r = handlebar_radius + 1, center = true, $fn = circular_face_count);
+        translate([-0.5, -handlebar_radius - 10, -clasp_width / 2 - 1]) cube([handlebar_radius + 10, handlebar_radius * 2 + 20, clasp_width + 2]);
+    }
+}
+
+top_clasp();

bike-lights/case/common.scad

@@ -0,0 +1,92 @@
+
+module hexagon(r, h) {
+    cylinder(r = r, h = h, center = 2, $fn = 6);
+}
+
+module pill(length, bevel) {
+    hull() {
+        translate([0, 0, (-length / 2) + bevel]) sphere(r = bevel);
+        translate([0, 0, (length / 2) - bevel]) sphere(r = bevel);
+    }
+}
+
+module rounded_cube(dimensions, bevel = 0) {
+    x = dimensions[0];
+    y = dimensions[1];
+    z = dimensions[2];
+
+    if (bevel > 0) {
+        hull() {
+            translate([-x / 2 + bevel, -y / 2 + bevel, -z / 2 + bevel]) sphere(r = bevel);
+            translate([ x / 2 - bevel, -y / 2 + bevel, -z / 2 + bevel]) sphere(r = bevel);
+            translate([ x / 2 - bevel,  y / 2 - bevel, -z / 2 + bevel]) sphere(r = bevel);
+            translate([-x / 2 + bevel,  y / 2 - bevel, -z / 2 + bevel]) sphere(r = bevel);
+            translate([-x / 2 + bevel, -y / 2 + bevel,  z / 2 - bevel]) sphere(r = bevel);
+            translate([ x / 2 - bevel, -y / 2 + bevel,  z / 2 - bevel]) sphere(r = bevel);
+            translate([ x / 2 - bevel,  y / 2 - bevel,  z / 2 - bevel]) sphere(r = bevel);
+            translate([-x / 2 + bevel,  y / 2 - bevel,  z / 2 - bevel]) sphere(r = bevel);
+        }
+    } else {
+        cube(dimensions, center = true);
+    }
+}
+
+module box_face(dimensions, bevel = 0) {
+    x = dimensions[0];
+    y = dimensions[1];
+    z = dimensions[2];
+
+    if (bevel > 0) {
+        translate([0, 0, z / 2])
+        hull() {
+            pill(z, bevel);
+            translate([x, 0, 0])
+                pill(z, bevel);
+            translate([x, y, 0])
+                pill(z, bevel);
+            translate([0, y, 0])
+                pill(z, bevel);
+        }
+    } else {
+        cube(dimensions);
+    }
+}
+
+module channel(length, width, height, bevel) {
+    union() {
+        box_face([length, width, wall_thickness], bevel);
+
+        translate([0, wall_thickness - bevel, bevel])
+            rotate([90, 0, 0])
+            box_face([length, height, wall_thickness], bevel);
+
+        translate([0, width + bevel, bevel])
+            rotate([90, 0, 0])
+            box_face([length, height, wall_thickness], bevel);
+    }
+}
+
+module box(length, width, height, bevel = 0) {
+    union() {
+        channel(length, width, height, bevel);
+
+        translate([-bevel, 0, bevel])
+            rotate([90, 0, 0])
+            rotate([0, 90, 0])
+            box_face([width, height, wall_thickness], bevel);
+
+        translate([length - wall_thickness + bevel, 0, bevel])
+            rotate([90, 0, 0])
+            rotate([0, 90, 0])
+            box_face([width, height, wall_thickness], bevel);
+    }
+}
+
+module box_side_slider(length, width, height) {
+    difference() {
+        box_face([width - wall_thickness * 2 + 4, height, wall_thickness], bevel);
+        translate([-1, -1, 1]) cube([4-threshold, height+2, 4-threshold]);
+        color("red") translate([width - wall_thickness * 2 + 1, -1, 1]) cube([4-threshold, height+2, 4-threshold]);
+    }
+}
+

bike-lights/case/control_panel.scad

@@ -0,0 +1,210 @@
+$fn = 50;
+threshold = 0.1;
+
+board_length = 92;
+board_width = 72;
+board_height = 21.5;
+wall_thickness = 4;
+bevel = 0.5;
+
+hinge_radius = 2.5;
+
+case_width = board_width + wall_thickness * 2;
+case_length = board_length + wall_thickness * 2;
+case_height = board_height + wall_thickness;
+
+handlebar_radius = 15;
+clasp_thickness = 4;
+circular_face_count = 48;
+clasp_width = 35;
+
+include <./common.scad>;
+
+module top_clasp() {
+    difference() {
+        union() {
+            cylinder(h = clasp_width, r = handlebar_radius + clasp_thickness, center = true, $fn = circular_face_count);
+            translate([0, 0, -clasp_width / 2]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([0, 0, -clasp_width / 2 + 4]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([0, 0, clasp_width / 2]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([0, 0, clasp_width / 2 - 4]) cylinder(h = 1, r = handlebar_radius + clasp_thickness + 1, center = true, $fn = circular_face_count);
+            translate([-handlebar_radius-5, -10, -clasp_width / 2 + 6]) cube([6, 20, clasp_width - 12]);
+        }
+        translate([-0.5, 0, 0]) cylinder(h = clasp_width+2, r = handlebar_radius + 1, center = true, $fn = circular_face_count);
+        translate([-0.5, -handlebar_radius - 10, -clasp_width / 2 - 1]) cube([handlebar_radius + 10, handlebar_radius * 2 + 20, clasp_width + 2]);
+    }
+}
+
+module hinge(length) {
+    difference() {
+        union() {
+            cube([hinge_radius * 2, length, hinge_radius], center = true);
+            translate([0, 0, -1.5]) rotate([90, 0, 0]) cylinder(h = length, r = hinge_radius, center = true);
+        }
+        translate([0, threshold / 2, -1.5]) rotate([90, 0, 0]) cylinder(h = length + threshold * 2, r = 1, center = true);
+    }
+}
+
+module base_case(length, width, height, bevel = 0) {
+    difference() {
+        union() {
+            channel(length + wall_thickness / 2, width, height, bevel);
+
+            translate([-bevel, 0, bevel])
+                rotate([90, 0, 0])
+                rotate([0, 90, 0])
+                box_face([width, height, wall_thickness], bevel);
+
+            // These are the sleds at the bottom of the case that should hold the lower of the two boards down
+            color("blue") translate([0, wall_thickness - 2, wall_thickness + 4]) cube([length - 8, 4, wall_thickness / 2]);
+            color("blue") translate([wall_thickness - 2, wall_thickness - 4, wall_thickness + 4]) cube([4, width, wall_thickness / 2]);
+            color("blue") translate([length - 25, width - wall_thickness * 3 / 2, wall_thickness + 6]) cube([16, wall_thickness, wall_thickness / 2]);
+        }
+
+        // This makes an indent at the bottom to accomodate solder joins
+        translate([wall_thickness + 2, wall_thickness + 2, wall_thickness / 2]) cube([length, width - wall_thickness * 2 - 4, wall_thickness / 2 + threshold]);
+
+        // This creates a cutout that lets the power plug slide in better.
+        translate([wall_thickness, width - wall_thickness, wall_thickness]) cube([length, 2, 6]);
+
+        // These two put in the slots that should allow the fourth wall to be slotted into place.
+        color("red") translate([length - 1, wall_thickness - 2, 4]) cube([2, 2, height]);
+        color("red") translate([length - 1, width - wall_thickness, 4]) cube([2, 2, height]);
+    }
+}
+
+module main_case() {
+    hinge_length = board_length / 4;
+    hinge_y_offset = board_width + wall_thickness + hinge_radius;
+    hinge_z_offset = board_height;
+
+    difference() {
+        union() {
+            base_case(case_length,
+                case_width,
+                case_height,
+                bevel);
+
+            translate([-bevel, 0, bevel])
+                rotate([90, 0, 0])
+                rotate([0, 90, 0])
+                box_face([case_width, case_height, wall_thickness], bevel);
+
+            translate([0, -hinge_radius - bevel + threshold, hinge_z_offset + bevel])
+                rotate([90, 0, 0])
+                rotate([0, 90, 0])
+                hinge(case_length / 4);
+
+            translate([case_length - hinge_length, -hinge_radius - bevel + threshold, hinge_z_offset + bevel])
+                rotate([90, 0, 0])
+                rotate([0, 90, 0])
+                hinge(case_length / 4);
+
+            translate([43, case_width, wall_thickness + 8])
+                rotate([90, 0, 0])
+                rotate([0, 180, 0])
+                linear_extrude(1)
+                text("lights", size = 3);
+
+            translate([67, case_width, wall_thickness + 8])
+                rotate([90, 0, 0])
+                rotate([0, 180, 0])
+                linear_extrude(1)
+                text("left", size = 3);
+
+            translate([55, case_width, wall_thickness + 8])
+                rotate([90, 0, 0])
+                rotate([0, 180, 0])
+                linear_extrude(1)
+                text("right", size = 3);
+            // translate([case_length / 2, case_width / 2, -20]) rotate([0, 90, 0]) top_clasp();
+        }
+
+        translate([case_length / 2, case_width / 2, -threshold]) hexagon(4.5, 6);
+
+        # translate([8.5 + wall_thickness, case_width - wall_thickness - threshold, wall_thickness])
+        # cube([60, wall_thickness * 2, 7]);
+    }
+}
+
+module lamp() {
+    union() {
+        translate([0, 0, -0.5]) cube([12.9 + threshold, 8, 4], center = true);
+        translate([0, 0, .88]) cube([5 + threshold, 5 + threshold, 1.56], center = true);
+        /*
+        translate([0, 0, -1.56]) cube([12.9, 7.6, wall_thickness], center = true);
+        */
+    }
+}
+
+module button() {
+    union() {
+        cube([3.5 + threshold, 6.1 + threshold, 4 + threshold], center = true);
+        translate([0, 0, -0.5]) cube([1.2, 7, 3 + threshold], center = true);
+    }
+}
+
+module lid() {
+    lid_width = case_width + hinge_radius * 2 + wall_thickness;
+    hinge_length = case_length / 4;
+    union() {
+        difference() {
+            rounded_cube([case_length,
+                      lid_width,
+                      wall_thickness],
+                     bevel);
+            translate([0, lid_width / 5, 0.4]) lamp();
+            translate([-15, lid_width / 5, 0.4]) lamp();
+            translate([15, lid_width / 5, 0.4]) lamp();
+            translate([-30, lid_width / 5, 0]) button();
+            translate([30, lid_width / 5, 0]) button();
+
+            translate([0, lid_width / 5, -2]) cube([20, 7, 3], center = true);
+
+            color("black") translate([-2, lid_width / 5 - 5, -2]) rotate([0, 0, 90]) rotate([0, 90, 0]) cylinder(h=5, r = 1, center = true, $fn = circular_face_count);
+            color("black") translate([-17, lid_width / 5 - 5, -2]) rotate([0, 0, 90]) rotate([0, 90, 0]) cylinder(h=5, r = 1, center = true, $fn = circular_face_count);
+            color("black") translate([13, lid_width / 5 - 5, -2]) rotate([0, 0, 90]) rotate([0, 90, 0]) cylinder(h=5, r = 1, center = true, $fn = circular_face_count);
+            color("black") translate([-30, lid_width / 5 - 5, -2]) rotate([0, 0, 90]) rotate([0, 90, 0]) cylinder(h=5, r = 1, center = true, $fn = circular_face_count);
+            color("black") translate([30, lid_width / 5 - 5, -2]) rotate([0, 0, 90]) rotate([0, 90, 0]) cylinder(h=5, r = 1, center = true, $fn = circular_face_count);
+            color("black") translate([0, 10, -2]) rotate([0, 90, 0]) cylinder(h = 62, r = 1, center = true, $fn = circular_face_count);
+
+            color("red") translate([-33, 21, -2]) rotate([0, 90, 0]) cylinder(h = 5, r = 1, center = true, $fn = circular_face_count);
+            color("red") translate([-35, 13, -2]) rotate([0, 0, 90]) rotate([0, 90, 0]) cylinder(h = 18, r = 1, center = true, $fn = circular_face_count);
+            color("red") translate([33, 21, -2]) rotate([0, 90, 0]) cylinder(h = 5, r = 1, center = true, $fn = circular_face_count);
+            color("red") translate([35, 13, -2]) rotate([0, 0, 90]) rotate([0, 90, 0]) cylinder(h = 18, r = 1, center = true, $fn = circular_face_count);
+            color("red") translate([0, 5, -2]) rotate([0, 90, 0]) cylinder(h = 70, r = 1, center = true, $fn = circular_face_count);
+        }
+
+        translate([case_length / 2 - hinge_length / 2, lid_width / 2 - wall_thickness / 2 - 0.5, -wall_thickness / 2]) rotate([0, 0, 90]) hinge(hinge_length);
+        translate([-case_length / 2 + hinge_length / 2, lid_width / 2 - wall_thickness / 2 - 0.5, -wall_thickness / 2]) rotate([0, 0, 90]) hinge(hinge_length);
+
+        translate([0, -lid_width / 2 + bevel, -3]) rounded_cube([20, wall_thickness / 2, 10], bevel);
+        color("blue") translate([-9, -lid_width / 2 + 1.5, -6]) rotate([90, 0, 0]) rotate([0, 90, 0]) linear_extrude(18) circle(1, $fn = 3);
+        color("blue") translate([-9, -lid_width / 2 + 1.5, -7]) rotate([90, 0, 0]) rotate([0, 90, 0]) linear_extrude(18) circle(1, $fn = 3);
+    }
+}
+
+module box_side() {
+    box_side_slider(case_length, case_width, case_height);
+}
+
+module case_base() {
+    difference() {
+        rounded_cube([case_length, case_width, wall_thickness + 2], bevel = 0.5);
+        translate([wall_thickness, 0, 2]) rounded_cube([case_length + threshold, board_width + threshold, 2 + threshold]);
+
+        // These give a screw-hole in the center which will allow the clamp to be attached
+        translate([0, 0, -1]) hexagon(4.5, 2);
+        translate([0, 0, -wall_thickness / 2]) cylinder(r = 2, h = wall_thickness + threshold, center = true);
+
+        // and now a bit of an indentation to help the clip remain in place
+        translate([0, 0, -4.5]) cube([clasp_width + threshold, clasp_width + threshold, wall_thickness], center = true);
+
+        // here are some grooves along the edges that can be used to piece parts together
+        translate([wall_thickness / 2, case_width / 2 - wall_thickness / 2, wall_thickness / 2])
+            cube([board_length + wall_thickness, wall_thickness / 2, wall_thickness / 2 + threshold], center = true);
+        translate([wall_thickness / 2, -case_width / 2 + wall_thickness / 2, wall_thickness / 2])
+            cube([board_length + wall_thickness, wall_thickness / 2, wall_thickness / 2 + threshold], center = true);
+    }
+}
+

bike-lights/case/control_panel_case.scad

@@ -0,0 +1,11 @@
+
+include <./control_panel.scad>
+
+/*
+difference() {
+    color("blue") rounded_cube([5, 5, 5], bevel = 0.5);
+    translate([0, 0, 1]) rounded_cube([4, 4, 4]);
+};
+*/
+
+case_base();

bike-lights/case/control_panel_lid.scad

@@ -0,0 +1,6 @@
+
+include <./control_panel.scad>
+
+lid();
+// lamp();
+

bike-lights/case/control_panel_slider.scad

@@ -0,0 +1,4 @@
+
+include <./control_panel.scad>
+
+box_side();

bike-lights/core/Cargo.toml

@@ -1,13 +1,10 @@
 [package]
-name = "glimmer"
+name = "lights-core"
 version = "0.1.0"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-gtk     = { version = "0.5", package = "gtk4" }
-glib    = { version = "0.16" }
-
-[build-dependencies]
-glib-build-tools = "0.16"
+az      = { version = "1" }
+fixed   = { version = "1" }

bike-lights/core/src/lib.rs

@@ -0,0 +1,481 @@
+#![no_std]
+
+extern crate alloc;
+use alloc::boxed::Box;
+use az::*;
+use core::{
+    clone::Clone,
+    cmp::PartialEq,
+    default::Default,
+    ops::{Add, Sub},
+    option::Option,
+};
+use fixed::types::{I48F16, I8F8, U128F0, U16F0};
+
+mod patterns;
+pub use patterns::*;
+
+mod types;
+pub use types::{BodyPattern, DashboardPattern, RGB};
+
+fn calculate_frames(starting_time: U128F0, now: U128F0) -> U16F0 {
+    let frames_128 = (now - starting_time) / U128F0::from(FPS);
+    (frames_128 % U128F0::from(U16F0::MAX)).cast()
+}
+
+fn calculate_slope(start: I8F8, end: I8F8, frames: U16F0) -> I8F8 {
+    let slope_i16f16 = (I48F16::from(end) - I48F16::from(start)) / I48F16::from(frames);
+    slope_i16f16.saturating_as()
+}
+
+fn linear_ease(value: I8F8, frames: U16F0, slope: I8F8) -> I8F8 {
+    let value_i16f16 = I48F16::from(value) + I48F16::from(frames) * I48F16::from(slope);
+    value_i16f16.saturating_as()
+}
+
+#[derive(Clone, Copy, PartialOrd, Ord, PartialEq, Eq)]
+pub struct Instant(pub U128F0);
+
+impl Default for Instant {
+    fn default() -> Self {
+        Self(U128F0::from(0 as u8))
+    }
+}
+
+impl Add for Instant {
+    type Output = Self;
+
+    fn add(self, r: Self) -> Self::Output {
+        Self(self.0 + r.0)
+    }
+}
+
+impl Sub for Instant {
+    type Output = Self;
+
+    fn sub(self, r: Self) -> Self::Output {
+        Self(self.0 - r.0)
+    }
+}
+
+pub const FPS: u8 = 30;
+
+pub trait UI {
+    fn check_event(&mut self, current_time: Instant) -> Option<Event>;
+    fn update_lights(&self, dashboard_lights: DashboardPattern, body_lights: BodyPattern);
+}
+
+pub trait Animation {
+    fn tick(&mut self, time: Instant) -> (DashboardPattern, BodyPattern);
+}
+
+/*
+pub struct DefaultAnimation {}
+
+impl Animation for DefaultAnimation {
+    fn tick(&mut self, _: Instant) -> (DashboardPattern, BodyPattern) {
+        (WATER_DASHBOARD, WATER_BODY)
+    }
+}
+*/
+
+pub struct Fade {
+    starting_dashboard: DashboardPattern,
+    starting_lights: BodyPattern,
+
+    start_time: Instant,
+    dashboard_slope: [RGB<I8F8>; 3],
+    body_slope: [RGB<I8F8>; 60],
+    frames: U16F0,
+}
+
+impl Fade {
+    fn new(
+        dashboard: DashboardPattern,
+        lights: BodyPattern,
+        ending_dashboard: DashboardPattern,
+        ending_lights: BodyPattern,
+        frames: U16F0,
+        time: Instant,
+    ) -> Self {
+        let mut dashboard_slope = [Default::default(); 3];
+        let mut body_slope = [Default::default(); 60];
+        for i in 0..3 {
+            let slope = RGB {
+                r: calculate_slope(dashboard[i].r, ending_dashboard[i].r, frames),
+                g: calculate_slope(dashboard[i].g, ending_dashboard[i].g, frames),
+                b: calculate_slope(dashboard[i].b, ending_dashboard[i].b, frames),
+            };
+            dashboard_slope[i] = slope;
+        }
+
+        for i in 0..60 {
+            let slope = RGB {
+                r: calculate_slope(lights[i].r, ending_lights[i].r, frames),
+                g: calculate_slope(lights[i].g, ending_lights[i].g, frames),
+                b: calculate_slope(lights[i].b, ending_lights[i].b, frames),
+            };
+            body_slope[i] = slope;
+        }
+
+        Self {
+            starting_dashboard: dashboard,
+            starting_lights: lights,
+            start_time: time,
+            dashboard_slope,
+            body_slope,
+            frames,
+        }
+    }
+}
+
+impl Animation for Fade {
+    fn tick(&mut self, time: Instant) -> (DashboardPattern, BodyPattern) {
+        let mut frames = calculate_frames(self.start_time.0, time.0);
+        if frames > self.frames {
+            frames = self.frames
+        }
+        let mut dashboard_pattern: DashboardPattern = OFF_DASHBOARD;
+        let mut body_pattern: BodyPattern = OFF_BODY;
+
+        for i in 0..3 {
+            dashboard_pattern[i].r = linear_ease(
+                self.starting_dashboard[i].r,
+                frames,
+                self.dashboard_slope[i].r,
+            );
+            dashboard_pattern[i].g = linear_ease(
+                self.starting_dashboard[i].g,
+                frames,
+                self.dashboard_slope[i].g,
+            );
+            dashboard_pattern[i].b = linear_ease(
+                self.starting_dashboard[i].b,
+                frames,
+                self.dashboard_slope[i].b,
+            );
+        }
+
+        for i in 0..60 {
+            body_pattern[i].r =
+                linear_ease(self.starting_lights[i].r, frames, self.body_slope[i].r);
+            body_pattern[i].g =
+                linear_ease(self.starting_lights[i].g, frames, self.body_slope[i].g);
+            body_pattern[i].b =
+                linear_ease(self.starting_lights[i].b, frames, self.body_slope[i].b);
+        }
+
+        (dashboard_pattern, body_pattern)
+    }
+}
+
+#[derive(Debug)]
+pub enum FadeDirection {
+    Transition,
+    FadeIn,
+    FadeOut,
+}
+
+pub enum BlinkerDirection {
+    Left,
+    Right,
+}
+
+pub struct Blinker {
+    transition: Fade,
+    fade_in: Fade,
+    fade_out: Fade,
+    direction: FadeDirection,
+
+    start_time: Instant,
+    frames: U16F0,
+}
+
+impl Blinker {
+    fn new(
+        starting_dashboard: DashboardPattern,
+        starting_body: BodyPattern,
+        direction: BlinkerDirection,
+        time: Instant,
+    ) -> Self {
+        let mut ending_dashboard = OFF_DASHBOARD.clone();
+
+        match direction {
+            BlinkerDirection::Left => {
+                ending_dashboard[0].r = LEFT_BLINKER_DASHBOARD[0].r;
+                ending_dashboard[0].g = LEFT_BLINKER_DASHBOARD[0].g;
+                ending_dashboard[0].b = LEFT_BLINKER_DASHBOARD[0].b;
+            }
+            BlinkerDirection::Right => {
+                ending_dashboard[2].r = RIGHT_BLINKER_DASHBOARD[2].r;
+                ending_dashboard[2].g = RIGHT_BLINKER_DASHBOARD[2].g;
+                ending_dashboard[2].b = RIGHT_BLINKER_DASHBOARD[2].b;
+            }
+        }
+
+        let mut ending_body = OFF_BODY.clone();
+        match direction {
+            BlinkerDirection::Left => {
+                for i in 0..30 {
+                    ending_body[i].r = LEFT_BLINKER_BODY[i].r;
+                    ending_body[i].g = LEFT_BLINKER_BODY[i].g;
+                    ending_body[i].b = LEFT_BLINKER_BODY[i].b;
+                }
+            }
+            BlinkerDirection::Right => {
+                for i in 30..60 {
+                    ending_body[i].r = RIGHT_BLINKER_BODY[i].r;
+                    ending_body[i].g = RIGHT_BLINKER_BODY[i].g;
+                    ending_body[i].b = RIGHT_BLINKER_BODY[i].b;
+                }
+            }
+        }
+
+        Blinker {
+            transition: Fade::new(
+                starting_dashboard.clone(),
+                starting_body.clone(),
+                ending_dashboard.clone(),
+                ending_body.clone(),
+                BLINKER_FRAMES,
+                time,
+            ),
+            fade_in: Fade::new(
+                OFF_DASHBOARD.clone(),
+                OFF_BODY.clone(),
+                ending_dashboard.clone(),
+                ending_body.clone(),
+                BLINKER_FRAMES,
+                time,
+            ),
+            fade_out: Fade::new(
+                ending_dashboard.clone(),
+                ending_body.clone(),
+                OFF_DASHBOARD.clone(),
+                OFF_BODY.clone(),
+                BLINKER_FRAMES,
+                time,
+            ),
+            direction: FadeDirection::Transition,
+            start_time: time,
+            frames: BLINKER_FRAMES,
+        }
+    }
+}
+
+impl Animation for Blinker {
+    fn tick(&mut self, time: Instant) -> (DashboardPattern, BodyPattern) {
+        let frames = calculate_frames(self.start_time.0, time.0);
+        if frames > self.frames {
+            match self.direction {
+                FadeDirection::Transition => {
+                    self.direction = FadeDirection::FadeOut;
+                    self.fade_out.start_time = time;
+                }
+                FadeDirection::FadeIn => {
+                    self.direction = FadeDirection::FadeOut;
+                    self.fade_out.start_time = time;
+                }
+                FadeDirection::FadeOut => {
+                    self.direction = FadeDirection::FadeIn;
+                    self.fade_in.start_time = time;
+                }
+            }
+            self.start_time = time;
+        }
+
+        match self.direction {
+            FadeDirection::Transition => self.transition.tick(time),
+            FadeDirection::FadeIn => self.fade_in.tick(time),
+            FadeDirection::FadeOut => self.fade_out.tick(time),
+        }
+    }
+}
+
+#[derive(Clone, Debug)]
+pub enum Event {
+    Brake,
+    BrakeRelease,
+    LeftBlinker,
+    NextPattern,
+    PreviousPattern,
+    RightBlinker,
+}
+
+#[derive(Clone, Copy, Debug, PartialEq)]
+pub enum Pattern {
+    Water,
+    GayPride,
+    TransPride,
+}
+
+impl Pattern {
+    fn previous(&self) -> Pattern {
+        match self {
+            Pattern::Water => Pattern::TransPride,
+            Pattern::GayPride => Pattern::Water,
+            Pattern::TransPride => Pattern::GayPride,
+        }
+    }
+
+    fn next(&self) -> Pattern {
+        match self {
+            Pattern::Water => Pattern::GayPride,
+            Pattern::GayPride => Pattern::TransPride,
+            Pattern::TransPride => Pattern::Water,
+        }
+    }
+
+    fn dashboard(&self) -> DashboardPattern {
+        match self {
+            Pattern::Water => WATER_DASHBOARD,
+            Pattern::GayPride => PRIDE_DASHBOARD,
+            Pattern::TransPride => TRANS_PRIDE_DASHBOARD,
+        }
+    }
+
+    fn body(&self) -> BodyPattern {
+        match self {
+            Pattern::Water => WATER_BODY,
+            Pattern::GayPride => PRIDE_BODY,
+            Pattern::TransPride => TRANS_PRIDE_BODY,
+        }
+    }
+}
+
+#[derive(Clone, Debug, PartialEq)]
+pub enum State {
+    Pattern(Pattern),
+    Brake,
+    LeftBlinker,
+    RightBlinker,
+    BrakeLeftBlinker,
+    BrakeRightBlinker,
+}
+
+pub struct App {
+    ui: Box<dyn UI>,
+    state: State,
+    home_pattern: Pattern,
+    current_animation: Box<dyn Animation>,
+    dashboard_lights: DashboardPattern,
+    lights: BodyPattern,
+}
+
+impl App {
+    pub fn new(ui: Box<dyn UI>) -> Self {
+        let pattern = Pattern::Water;
+        Self {
+            ui,
+            state: State::Pattern(pattern),
+            home_pattern: pattern,
+            current_animation: Box::new(Fade::new(
+                OFF_DASHBOARD,
+                OFF_BODY,
+                pattern.dashboard(),
+                pattern.body(),
+                DEFAULT_FRAMES,
+                Instant((0 as u32).into()),
+            )),
+            dashboard_lights: OFF_DASHBOARD,
+            lights: OFF_BODY,
+        }
+    }
+
+    fn update_animation(&mut self, time: Instant) {
+        match self.state {
+            State::Pattern(ref pattern) => {
+                self.current_animation = Box::new(Fade::new(
+                    self.dashboard_lights.clone(),
+                    self.lights.clone(),
+                    pattern.dashboard(),
+                    pattern.body(),
+                    DEFAULT_FRAMES,
+                    time,
+                ))
+            }
+            State::Brake => {
+                self.current_animation = Box::new(Fade::new(
+                    self.dashboard_lights.clone(),
+                    self.lights.clone(),
+                    BRAKES_DASHBOARD,
+                    BRAKES_BODY,
+                    BRAKES_FRAMES,
+                    time,
+                ));
+            }
+            State::LeftBlinker => {
+                self.current_animation = Box::new(Blinker::new(
+                    self.dashboard_lights.clone(),
+                    self.lights.clone(),
+                    BlinkerDirection::Left,
+                    time,
+                ));
+            }
+            State::RightBlinker => {
+                self.current_animation = Box::new(Blinker::new(
+                    self.dashboard_lights.clone(),
+                    self.lights.clone(),
+                    BlinkerDirection::Right,
+                    time,
+                ));
+            }
+            State::BrakeLeftBlinker => (),
+            State::BrakeRightBlinker => (),
+        }
+    }
+
+    fn update_state(&mut self, event: Event) {
+        match event {
+            Event::Brake => {
+                if self.state == State::Brake {
+                    self.state = State::Pattern(self.home_pattern);
+                } else {
+                    self.state = State::Brake;
+                }
+            }
+            Event::BrakeRelease => self.state = State::Pattern(self.home_pattern),
+            Event::LeftBlinker => match self.state {
+                State::Brake => self.state = State::BrakeLeftBlinker,
+                State::BrakeLeftBlinker => self.state = State::Brake,
+                State::LeftBlinker => self.state = State::Pattern(self.home_pattern),
+                _ => self.state = State::LeftBlinker,
+            },
+            Event::NextPattern => match self.state {
+                State::Pattern(ref pattern) => {
+                    self.home_pattern = pattern.next();
+                    self.state = State::Pattern(self.home_pattern);
+                }
+                _ => (),
+            },
+            Event::PreviousPattern => match self.state {
+                State::Pattern(ref pattern) => {
+                    self.home_pattern = pattern.previous();
+                    self.state = State::Pattern(self.home_pattern);
+                }
+                _ => (),
+            },
+            Event::RightBlinker => match self.state {
+                State::Brake => self.state = State::BrakeRightBlinker,
+                State::BrakeRightBlinker => self.state = State::Brake,
+                State::RightBlinker => self.state = State::Pattern(self.home_pattern),
+                _ => self.state = State::RightBlinker,
+            },
+        }
+    }
+
+    pub fn tick(&mut self, time: Instant) {
+        match self.ui.check_event(time) {
+            Some(event) => {
+                self.update_state(event);
+                self.update_animation(time);
+            }
+            None => {}
+        };
+
+        let (dashboard, lights) = self.current_animation.tick(time);
+        self.dashboard_lights = dashboard.clone();
+        self.lights = lights.clone();
+        self.ui.update_lights(dashboard, lights);
+    }
+}

bike-lights/core/src/patterns.rs

@@ -0,0 +1,400 @@
+use crate::{BodyPattern, DashboardPattern, RGB};
+use fixed::types::{I8F8, U16F0};
+
+pub const RGB_OFF: RGB<I8F8> = RGB {
+    r: I8F8::lit("0"),
+    g: I8F8::lit("0"),
+    b: I8F8::lit("0"),
+};
+
+pub const RGB_WHITE: RGB<I8F8> = RGB {
+    r: I8F8::lit("1"),
+    g: I8F8::lit("1"),
+    b: I8F8::lit("1"),
+};
+
+pub const BRAKES_RED: RGB<I8F8> = RGB {
+    r: I8F8::lit("1"),
+    g: I8F8::lit("0"),
+    b: I8F8::lit("0"),
+};
+
+pub const BLINKER_AMBER: RGB<I8F8> = RGB {
+    r: I8F8::lit("1"),
+    g: I8F8::lit("0.15"),
+    b: I8F8::lit("0"),
+};
+
+pub const PRIDE_RED: RGB<I8F8> = RGB {
+    r: I8F8::lit("0.95"),
+    g: I8F8::lit("0.00"),
+    b: I8F8::lit("0.00"),
+};
+
+pub const PRIDE_ORANGE: RGB<I8F8> = RGB {
+    r: I8F8::lit("1.0"),
+    g: I8F8::lit("0.25"),
+    b: I8F8::lit("0"),
+};
+
+pub const PRIDE_YELLOW: RGB<I8F8> = RGB {
+    r: I8F8::lit("1.0"),
+    g: I8F8::lit("0.85"),
+    b: I8F8::lit("0"),
+};
+
+pub const PRIDE_GREEN: RGB<I8F8> = RGB {
+    r: I8F8::lit("0"),
+    g: I8F8::lit("0.95"),
+    b: I8F8::lit("0.05"),
+};
+
+pub const PRIDE_INDIGO: RGB<I8F8> = RGB {
+    r: I8F8::lit("0.04"),
+    g: I8F8::lit("0.15"),
+    b: I8F8::lit("0.55"),
+};
+
+pub const PRIDE_VIOLET: RGB<I8F8> = RGB {
+    r: I8F8::lit("0.75"),
+    g: I8F8::lit("0.0"),
+    b: I8F8::lit("0.80"),
+};
+
+pub const TRANS_BLUE: RGB<I8F8> = RGB {
+    r: I8F8::lit("0.06"),
+    g: I8F8::lit("0.41"),
+    b: I8F8::lit("0.98"),
+};
+
+pub const TRANS_PINK: RGB<I8F8> = RGB {
+    r: I8F8::lit("0.96"),
+    g: I8F8::lit("0.16"),
+    b: I8F8::lit("0.32"),
+};
+
+pub const WATER_1: RGB<I8F8> = RGB {
+    r: I8F8::lit("0.0"),
+    g: I8F8::lit("0.0"),
+    b: I8F8::lit("0.75"),
+};
+
+pub const WATER_2: RGB<I8F8> = RGB {
+    r: I8F8::lit("0.8"),
+    g: I8F8::lit("0.8"),
+    b: I8F8::lit("0.8"),
+};
+
+pub const WATER_3: RGB<I8F8> = RGB {
+    r: I8F8::lit("0.00"),
+    g: I8F8::lit("0.75"),
+    b: I8F8::lit("0.75"),
+};
+
+pub const OFF_DASHBOARD: DashboardPattern = [RGB_OFF; 3];
+pub const OFF_BODY: BodyPattern = [RGB_OFF; 60];
+
+pub const DEFAULT_FRAMES: U16F0 = U16F0::lit("30");
+
+pub const WATER_DASHBOARD: DashboardPattern = [WATER_1, WATER_2, WATER_3];
+
+pub const WATER_BODY: BodyPattern = [
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+
+
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+    WATER_3,
+
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+    WATER_2,
+
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+    WATER_1,
+];
+
+pub const PRIDE_DASHBOARD: DashboardPattern = [PRIDE_RED, PRIDE_GREEN, PRIDE_INDIGO];
+
+pub const PRIDE_BODY: BodyPattern = [
+    // Left Side
+    // Red
+    PRIDE_RED,
+    PRIDE_RED,
+    PRIDE_RED,
+    PRIDE_RED,
+    PRIDE_RED,
+    // Orange
+    PRIDE_ORANGE,
+    PRIDE_ORANGE,
+    PRIDE_ORANGE,
+    PRIDE_ORANGE,
+    PRIDE_ORANGE,
+    // Yellow
+    PRIDE_YELLOW,
+    PRIDE_YELLOW,
+    PRIDE_YELLOW,
+    PRIDE_YELLOW,
+    PRIDE_YELLOW,
+    // Green
+    PRIDE_GREEN,
+    PRIDE_GREEN,
+    PRIDE_GREEN,
+    PRIDE_GREEN,
+    PRIDE_GREEN,
+    // Indigo
+    PRIDE_INDIGO,
+    PRIDE_INDIGO,
+    PRIDE_INDIGO,
+    PRIDE_INDIGO,
+    PRIDE_INDIGO,
+    // Violet
+    PRIDE_VIOLET,
+    PRIDE_VIOLET,
+    PRIDE_VIOLET,
+    PRIDE_VIOLET,
+    PRIDE_VIOLET,
+    // Right Side
+    // Violet
+    PRIDE_VIOLET,
+    PRIDE_VIOLET,
+    PRIDE_VIOLET,
+    PRIDE_VIOLET,
+    PRIDE_VIOLET,
+    // Indigo
+    PRIDE_INDIGO,
+    PRIDE_INDIGO,
+    PRIDE_INDIGO,
+    PRIDE_INDIGO,
+    PRIDE_INDIGO,
+    // Green
+    PRIDE_GREEN,
+    PRIDE_GREEN,
+    PRIDE_GREEN,
+    PRIDE_GREEN,
+    PRIDE_GREEN,
+    // Yellow
+    PRIDE_YELLOW,
+    PRIDE_YELLOW,
+    PRIDE_YELLOW,
+    PRIDE_YELLOW,
+    PRIDE_YELLOW,
+    // Orange
+    PRIDE_ORANGE,
+    PRIDE_ORANGE,
+    PRIDE_ORANGE,
+    PRIDE_ORANGE,
+    PRIDE_ORANGE,
+    // Red
+    PRIDE_RED,
+    PRIDE_RED,
+    PRIDE_RED,
+    PRIDE_RED,
+    PRIDE_RED,
+];
+
+pub const TRANS_PRIDE_DASHBOARD: DashboardPattern = [TRANS_BLUE, RGB_WHITE, TRANS_PINK];
+
+pub const TRANS_PRIDE_BODY: BodyPattern = [
+    // Left Side
+    TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_PINK, TRANS_PINK,
+    TRANS_PINK, TRANS_PINK, TRANS_PINK, TRANS_PINK, RGB_WHITE, RGB_WHITE, RGB_WHITE, RGB_WHITE,
+    RGB_WHITE, RGB_WHITE, TRANS_PINK, TRANS_PINK, TRANS_PINK, TRANS_PINK, TRANS_PINK, TRANS_PINK,
+    TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE,
+    // Right side
+    TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_PINK, TRANS_PINK,
+    TRANS_PINK, TRANS_PINK, TRANS_PINK, TRANS_PINK, RGB_WHITE, RGB_WHITE, RGB_WHITE, RGB_WHITE,
+    RGB_WHITE, RGB_WHITE, TRANS_PINK, TRANS_PINK, TRANS_PINK, TRANS_PINK, TRANS_PINK, TRANS_PINK,
+    TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE, TRANS_BLUE,
+];
+
+pub const BRAKES_FRAMES: U16F0 = U16F0::lit("15");
+
+pub const BRAKES_DASHBOARD: DashboardPattern = [BRAKES_RED; 3];
+
+pub const BRAKES_BODY: BodyPattern = [BRAKES_RED; 60];
+
+pub const BLINKER_FRAMES: U16F0 = U16F0::lit("10");
+
+pub const LEFT_BLINKER_DASHBOARD: DashboardPattern = [BLINKER_AMBER, RGB_OFF, RGB_OFF];
+
+pub const LEFT_BLINKER_BODY: BodyPattern = [
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+];
+
+pub const RIGHT_BLINKER_DASHBOARD: DashboardPattern = [RGB_OFF, RGB_OFF, BLINKER_AMBER];
+
+pub const RIGHT_BLINKER_BODY: BodyPattern = [
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    RGB_OFF,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+    BLINKER_AMBER,
+];

bike-lights/core/src/types.rs

@@ -0,0 +1,17 @@
+use core::default::Default;
+use fixed::types::I8F8;
+
+#[derive(Clone, Copy, Default, Debug)]
+pub struct RGB<T> {
+    pub r: T,
+    pub g: T,
+    pub b: T,
+}
+
+const DASHBOARD_LIGHT_COUNT: usize = 3;
+
+pub type DashboardPattern = [RGB<I8F8>; DASHBOARD_LIGHT_COUNT];
+
+const BODY_LIGHT_COUNT: usize = 60;
+
+pub type BodyPattern = [RGB<I8F8>; BODY_LIGHT_COUNT];

bike-lights/simulator/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "simulator"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+adw         = { version = "0.5", package = "libadwaita", features = [ "v1_2" ] }
+cairo-rs    = { version = "0.18" }
+fixed       = { version = "1" }
+gio         = { version = "0.18" }
+glib        = { version = "0.18" }
+gtk         = { version = "0.7", package = "gtk4", features = [ "v4_8" ] }
+lights-core = { path = "../core" }
+pango       = { version = "*" }

bike-lights/simulator/src/main.rs

@@ -0,0 +1,288 @@
+use adw::prelude::*;
+use fixed::types::{I8F8, U128F0};
+use glib::{Object, Sender};
+use gtk::subclass::prelude::*;
+use lights_core::{
+    App, BodyPattern, DashboardPattern, Event, Instant, FPS, OFF_BODY, OFF_DASHBOARD, RGB, UI,
+};
+use std::{
+    cell::RefCell,
+    env,
+    rc::Rc,
+    sync::mpsc::{Receiver, TryRecvError},
+};
+
+const WIDTH: i32 = 640;
+const HEIGHT: i32 = 480;
+
+pub struct Update {
+    dashboard: DashboardPattern,
+    lights: BodyPattern,
+}
+
+pub struct DashboardLightsPrivate {
+    lights: Rc<RefCell<DashboardPattern>>,
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for DashboardLightsPrivate {
+    const NAME: &'static str = "DashboardLights";
+    type Type = DashboardLights;
+    type ParentType = gtk::DrawingArea;
+
+    fn new() -> Self {
+        Self {
+            lights: Rc::new(RefCell::new(OFF_DASHBOARD)),
+        }
+    }
+}
+
+impl ObjectImpl for DashboardLightsPrivate {}
+impl WidgetImpl for DashboardLightsPrivate {}
+impl DrawingAreaImpl for DashboardLightsPrivate {}
+
+glib::wrapper! {
+    pub struct DashboardLights(ObjectSubclass<DashboardLightsPrivate>) @extends gtk::DrawingArea, gtk::Widget;
+}
+
+impl DashboardLights {
+    pub fn new() -> Self {
+        let s: Self = Object::builder().build();
+
+        s.set_width_request(WIDTH);
+        s.set_height_request(100);
+
+        s.set_draw_func({
+            let s = s.clone();
+            move |_, context, width, _| {
+                let start = width as f64 / 2. - 150.;
+                let lights = s.imp().lights.borrow();
+                for i in 0..3 {
+                    context.set_source_rgb(
+                        lights[i].r.into(),
+                        lights[i].g.into(),
+                        lights[i].b.into(),
+                    );
+                    context.rectangle(start + 100. * i as f64, 10., 80., 80.);
+                    let _ = context.fill();
+                }
+            }
+        });
+
+        s
+    }
+
+    pub fn set_lights(&self, lights: DashboardPattern) {
+        *self.imp().lights.borrow_mut() = lights;
+        self.queue_draw();
+    }
+}
+
+pub struct BikeLightsPrivate {
+    lights: Rc<RefCell<BodyPattern>>,
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for BikeLightsPrivate {
+    const NAME: &'static str = "BikeLights";
+    type Type = BikeLights;
+    type ParentType = gtk::DrawingArea;
+
+    fn new() -> Self {
+        Self {
+            lights: Rc::new(RefCell::new(OFF_BODY)),
+        }
+    }
+}
+
+impl ObjectImpl for BikeLightsPrivate {}
+impl WidgetImpl for BikeLightsPrivate {}
+impl DrawingAreaImpl for BikeLightsPrivate {}
+
+glib::wrapper! {
+    pub struct BikeLights(ObjectSubclass<BikeLightsPrivate>) @extends gtk::DrawingArea, gtk::Widget;
+}
+
+impl BikeLights {
+    pub fn new() -> Self {
+        let s: Self = Object::builder().build();
+
+        s.set_width_request(WIDTH);
+        s.set_height_request(640);
+
+        let center = WIDTH as f64 / 2.;
+
+        s.set_draw_func({
+            let s = s.clone();
+            move |_, context, _, _| {
+                let lights = s.imp().lights.borrow();
+                for i in 0..30 {
+                    context.set_source_rgb(
+                        lights[i].r.into(),
+                        lights[i].g.into(),
+                        lights[i].b.into(),
+                    );
+                    context.rectangle(center - 45., 5. + 20. * i as f64, 15., 15.);
+                    let _ = context.fill();
+                }
+                for i in 0..30 {
+                    context.set_source_rgb(
+                        lights[i + 30].r.into(),
+                        lights[i + 30].g.into(),
+                        lights[i + 30].b.into(),
+                    );
+                    context.rectangle(center + 15., 5. + 20. * (30. - (i + 1) as f64), 15., 15.);
+                    let _ = context.fill();
+                }
+            }
+        });
+
+        s
+    }
+
+    pub fn set_lights(&self, lights: [RGB<I8F8>; 60]) {
+        *self.imp().lights.borrow_mut() = lights;
+        self.queue_draw();
+    }
+}
+
+struct GTKUI {
+    tx: Sender<Update>,
+    rx: Receiver<Event>,
+}
+
+impl UI for GTKUI {
+    fn check_event(&mut self, _: Instant) -> Option<Event> {
+        match self.rx.try_recv() {
+            Ok(event) => Some(event),
+            Err(TryRecvError::Empty) => None,
+            Err(TryRecvError::Disconnected) => None,
+        }
+    }
+
+    fn update_lights(&self, dashboard_lights: DashboardPattern, lights: BodyPattern) {
+        self.tx
+            .send(Update {
+                dashboard: dashboard_lights,
+                lights,
+            })
+            .unwrap();
+    }
+}
+
+fn main() {
+    let adw_app = adw::Application::builder()
+        .application_id("com.luminescent-dreams.bike-light-simulator")
+        .build();
+
+    adw_app.connect_activate(move |adw_app| {
+        let (update_tx, update_rx) =
+            gtk::glib::MainContext::channel::<Update>(gtk::glib::Priority::DEFAULT);
+        let (event_tx, event_rx) = std::sync::mpsc::channel();
+
+        std::thread::spawn(move || {
+            let mut bike_app = App::new(Box::new(GTKUI {
+                tx: update_tx,
+                rx: event_rx,
+            }));
+            loop {
+                bike_app.tick(Instant(U128F0::from(
+                    std::time::SystemTime::now()
+                        .duration_since(std::time::UNIX_EPOCH)
+                        .unwrap()
+                        .as_millis(),
+                )));
+                std::thread::sleep(std::time::Duration::from_millis(1000 / (FPS as u64)));
+            }
+        });
+
+        let window = adw::ApplicationWindow::builder()
+            .application(adw_app)
+            .default_width(WIDTH)
+            .default_height(HEIGHT)
+            .build();
+        let layout = gtk::Box::builder()
+            .orientation(gtk::Orientation::Vertical)
+            .build();
+        let controls = gtk::Box::builder()
+            .orientation(gtk::Orientation::Horizontal)
+            .build();
+
+        let dashboard_lights = DashboardLights::new();
+        let bike_lights = BikeLights::new();
+
+        let left_button = gtk::Button::builder().label("L").build();
+        let brake_button = gtk::Button::builder().label("Brakes").build();
+        let right_button = gtk::Button::builder().label("R").build();
+
+        left_button.connect_clicked({
+            let event_tx = event_tx.clone();
+            move |_| {
+                let _ = event_tx.send(Event::LeftBlinker);
+            }
+        });
+
+        brake_button.connect_clicked({
+            let event_tx = event_tx.clone();
+            move |_| {
+                let _ = event_tx.send(Event::Brake);
+            }
+        });
+
+        right_button.connect_clicked({
+            let event_tx = event_tx.clone();
+            move |_| {
+                let _ = event_tx.send(Event::RightBlinker);
+            }
+        });
+
+        controls.append(&left_button);
+        controls.append(&brake_button);
+        controls.append(&right_button);
+        layout.append(&controls);
+
+        let pattern_controls = gtk::Box::builder()
+            .orientation(gtk::Orientation::Horizontal)
+            .build();
+
+        let previous_pattern = gtk::Button::builder().label("Previous").build();
+        let next_pattern = gtk::Button::builder().label("Next").build();
+
+        previous_pattern.connect_clicked({
+            let event_tx = event_tx.clone();
+            move |_| {
+                let _ = event_tx.send(Event::PreviousPattern);
+            }
+        });
+
+        next_pattern.connect_clicked({
+            let event_tx = event_tx.clone();
+            move |_| {
+                let _ = event_tx.send(Event::NextPattern);
+            }
+        });
+
+        pattern_controls.append(&previous_pattern);
+        pattern_controls.append(&next_pattern);
+        layout.append(&pattern_controls);
+
+        layout.append(&dashboard_lights);
+        layout.append(&bike_lights);
+
+        update_rx.attach(None, {
+            let dashboard_lights = dashboard_lights.clone();
+            let bike_lights = bike_lights.clone();
+            move |Update { dashboard, lights }| {
+                dashboard_lights.set_lights(dashboard);
+                bike_lights.set_lights(lights);
+                glib::ControlFlow::Continue
+            }
+        });
+
+        window.set_content(Some(&layout));
+        window.present();
+    });
+
+    let args: Vec<String> = env::args().collect();
+    ApplicationExtManual::run_with_args(&adw_app, &args);
+}

changeset/Cargo.toml

@@ -3,7 +3,6 @@ name = "changeset"
 version = "0.1.0"
 edition = "2021"
 license = "GPL-3.0-only"
-license-file = "../COPYING"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 

changeset/Makefile

@@ -1,9 +0,0 @@
-
-dev:
-	cargo watch -x build
-
-test:
-	cargo watch -x test
-
-test-once:
-	cargo test

changeset/src/lib.rs

@@ -26,7 +26,7 @@ pub enum Change<Key: Eq + Hash, Value> {
     NewRecord(Value),
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct Changeset<Key: Clone + Eq + Hash, Value> {
     delete: HashSet<Key>,
     update: HashMap<Key, Value>,
@@ -34,14 +34,6 @@ pub struct Changeset<Key: Clone + Eq + Hash, Value> {
 }
 
 impl<Key: Clone + Constructable + Eq + Hash, Value> Changeset<Key, Value> {
-    pub fn new() -> Self {
-        Self {
-            delete: HashSet::new(),
-            update: HashMap::new(),
-            new: HashMap::new(),
-        }
-    }
-
     pub fn add(&mut self, r: Value) -> Key {
         let k = Key::new();
         self.new.insert(k.clone(), r);
@@ -90,7 +82,7 @@ impl<Key: Clone + Eq + Hash, Value> From<Changeset<Key, Value>> for Vec<Change<K
                     .into_iter()
                     .map(|(k, v)| Change::UpdateRecord((k, v))),
             )
-            .chain(new.into_iter().map(|(_, v)| Change::NewRecord(v)))
+            .chain(new.into_values().map(|v| Change::NewRecord(v)))
             .collect()
     }
 }
@@ -100,7 +92,7 @@ mod tests {
     use super::*;
     use uuid::Uuid;
 
-    #[derive(Clone, PartialEq, Eq, Hash)]
+    #[derive(Clone, PartialEq, Eq, Hash, Default)]
     struct Id(Uuid);
     impl Constructable for Id {
         fn new() -> Self {
@@ -110,7 +102,7 @@ mod tests {
 
     #[test]
     fn it_generates_a_new_record() {
-        let mut set: Changeset<Id, String> = Changeset::new();
+        let mut set: Changeset<Id, String> = Changeset::default();
         set.add("efgh".to_string());
         let changes = Vec::from(set.clone());
         assert_eq!(changes.len(), 1);
@@ -125,7 +117,7 @@ mod tests {
 
     #[test]
     fn it_generates_a_delete_record() {
-        let mut set: Changeset<Id, String> = Changeset::new();
+        let mut set: Changeset<Id, String> = Changeset::default();
         let id1 = Id::new();
         set.delete(id1.clone());
         let changes = Vec::from(set.clone());
@@ -142,7 +134,7 @@ mod tests {
 
     #[test]
     fn update_unrelated_records() {
-        let mut set: Changeset<Id, String> = Changeset::new();
+        let mut set: Changeset<Id, String> = Changeset::default();
         let id1 = Id::new();
         let id2 = Id::new();
         set.update(id1.clone(), "abcd".to_owned());
@@ -155,7 +147,7 @@ mod tests {
 
     #[test]
     fn delete_cancels_new() {
-        let mut set: Changeset<Id, String> = Changeset::new();
+        let mut set: Changeset<Id, String> = Changeset::default();
         let key = set.add("efgh".to_string());
         set.delete(key);
         let changes = Vec::from(set);
@@ -164,7 +156,7 @@ mod tests {
 
     #[test]
     fn delete_cancels_update() {
-        let mut set: Changeset<Id, String> = Changeset::new();
+        let mut set: Changeset<Id, String> = Changeset::default();
         let id = Id::new();
         set.update(id.clone(), "efgh".to_owned());
         set.delete(id.clone());
@@ -175,7 +167,7 @@ mod tests {
 
     #[test]
     fn update_atop_new_is_new() {
-        let mut set: Changeset<Id, String> = Changeset::new();
+        let mut set: Changeset<Id, String> = Changeset::default();
         let key = set.add("efgh".to_owned());
         set.update(key, "wxyz".to_owned());
         let changes = Vec::from(set);
@@ -185,7 +177,7 @@ mod tests {
 
     #[test]
     fn updates_get_squashed() {
-        let mut set: Changeset<Id, String> = Changeset::new();
+        let mut set: Changeset<Id, String> = Changeset::default();
         let id1 = Id::new();
         let id2 = Id::new();
         set.update(id1.clone(), "efgh".to_owned());

config-derive/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "config-derive"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+proc-macro = true
+
+[dependencies]
+quote           = { version = "1" }
+syn             = { version = "1", features = [ "extra-traits" ] }
+

config-derive/src/lib.rs

@@ -0,0 +1,23 @@
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+use quote::quote;
+
+use syn::{parse_macro_input, DeriveInput};
+
+#[proc_macro_derive(ConfigOption)]
+pub fn derive(input: TokenStream) -> TokenStream {
+    let DeriveInput { ident, .. } = parse_macro_input!(input as DeriveInput);
+
+    let result = quote! {
+        impl From<&Config> for Option<#ident> {
+            fn from(config: &Config) -> Self {
+                match config.values.get(&ConfigName::#ident) {
+                    Some(ConfigOption::#ident(val)) => Some(val.clone()),
+                    _ => None,
+                }
+            }
+        }
+    };
+    result.into()
+}

config/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "config"
+version = "0.1.0"
+edition = "2021"
+
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+config-derive   = { path = "../config-derive" }
+serde_json      = { version = "1" }
+serde           = { version = "1", features = [ "derive" ] }
+thiserror       = { version = "1" }
+
+[dev-dependencies]
+cool_asserts    = { version = "2" }

config/src/lib.rs

@@ -0,0 +1,160 @@
+/*
+use std::{
+    collections::HashMap,
+    fs::File,
+    hash::Hash,
+    io::{ErrorKind, Read},
+    path::PathBuf,
+};
+*/
+
+pub use config_derive::ConfigOption;
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum ConfigReadError {
+    #[error("Cannot read the configuration file: {0}")]
+    CannotRead(std::io::Error),
+    #[error("Cannot open the configuration file for reading: {0}")]
+    CannotOpen(std::io::Error),
+    #[error("Invalid json data found in the configurationfile: {0}")]
+    InvalidJSON(serde_json::Error),
+}
+
+#[macro_export]
+macro_rules! define_config {
+    ($($name:ident($struct:ident),)+) => (
+        #[derive(Clone, Debug, Hash, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
+        pub enum ConfigName {
+            $($name),+
+        }
+
+        #[derive(Clone, Debug, serde::Serialize, serde::Deserialize)]
+        #[serde(untagged)]
+        pub enum ConfigOption {
+            $($name($struct)),+
+        }
+
+        #[derive(Clone, Debug, serde::Serialize, serde::Deserialize)]
+        pub struct Config {
+            values: std::collections::HashMap<ConfigName, ConfigOption>,
+        }
+
+        impl Config {
+            pub fn new() -> Self {
+                Self {
+                    values: std::collections::HashMap::new(),
+                }
+            }
+
+            pub fn from_path(config_path: std::path::PathBuf) -> Result<Self, $crate::ConfigReadError> {
+                let mut settings = config_path.clone();
+                settings.push("config");
+
+                match std::fs::File::open(settings) {
+                    Ok(mut file) => {
+                        let mut buf = String::new();
+                        std::io::Read::read_to_string(&mut file, &mut buf)
+                            .map_err(|err| $crate::ConfigReadError::CannotRead(err))?;
+                        let values = serde_json::from_str(buf.as_ref())
+                            .map_err(|err| $crate::ConfigReadError::InvalidJSON(err))?;
+                        Ok(Self {
+                            values,
+                        })
+                    }
+                    Err(io_err) => {
+                        match io_err.kind() {
+                            std::io::ErrorKind::NotFound => {
+                                /* create the path and an empty file */
+                                Ok(Self {
+                                    values: std::collections::HashMap::new(),
+                                })
+                            }
+                            _ => Err($crate::ConfigReadError::CannotOpen(io_err)),
+                        }
+                    }
+                }
+            }
+
+            pub fn set(&mut self, val: ConfigOption) {
+                let _ = match val {
+                    $(ConfigOption::$struct(_) => self.values.insert(ConfigName::$name, val)),+
+                };
+            }
+
+            pub fn get<'a, T>(&'a self) -> Option<T>
+            where
+                Option<T>: From<&'a Self>,
+            {
+                self.into()
+            }
+        }
+    )
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use cool_asserts::assert_matches;
+    use serde::{Deserialize, Serialize};
+    use std::collections::HashMap;
+    use std::path::PathBuf;
+
+    define_config! {
+        DatabasePath(DatabasePath),
+        Me(Me),
+    }
+
+    #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize, ConfigOption)]
+    pub struct DatabasePath(PathBuf);
+
+    #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+    enum Rank {
+        Kyu(i8),
+        Dan(i8),
+    }
+
+    #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize, ConfigOption)]
+    pub struct Me {
+        name: String,
+        rank: Option<Rank>,
+    }
+
+    #[test]
+    fn it_can_set_and_get_options() {
+        let mut config: Config = Config::new();
+        config.set(ConfigOption::DatabasePath(DatabasePath(PathBuf::from(
+            "./fixtures/five_games",
+        ))));
+
+        assert_eq!(
+            Some(DatabasePath(PathBuf::from("./fixtures/five_games"))),
+            config.get()
+        );
+    }
+
+    #[test]
+    fn it_can_serialize_and_deserialize() {
+        let mut config = Config::new();
+        config.set(ConfigOption::DatabasePath(DatabasePath(PathBuf::from(
+            "fixtures/five_games",
+        ))));
+        config.set(ConfigOption::Me(Me {
+            name: "Savanni".to_owned(),
+            rank: Some(Rank::Kyu(10)),
+        }));
+        let s = serde_json::to_string(&config.values).unwrap();
+        println!("{}", s);
+        let values: HashMap<ConfigName, ConfigOption> = serde_json::from_str(s.as_ref()).unwrap();
+        println!("options: {:?}", values);
+
+        assert_matches!(values.get(&ConfigName::DatabasePath),
+                        Some(ConfigOption::DatabasePath(ref db_path)) =>
+                        assert_eq!(Some(db_path.clone()), config.get())
+        );
+
+        assert_matches!(values.get(&ConfigName::Me), Some(ConfigOption::Me(val)) =>
+            assert_eq!(Some(val.clone()), config.get())
+        );
+    }
+}

coordinates/Cargo.toml

@@ -3,7 +3,6 @@ name = "coordinates"
 version = "0.1.0"
 edition = "2021"
 license = "GPL-3.0-only"
-license-file = "../COPYING"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 

coordinates/Makefile

@@ -1,9 +0,0 @@
-
-dev:
-	cargo watch -x build
-
-test:
-	cargo watch -x test
-
-test-once:
-	cargo test

coordinates/src/bin/default_map.rs

@@ -33,12 +33,12 @@ fn main() {
 
     let filename = args
         .next()
-        .map(|p| PathBuf::from(p))
+        .map(PathBuf::from)
         .expect("A filename is required");
     let size = args
         .next()
         .and_then(|s| s.parse::<usize>().ok())
         .unwrap_or(3);
     let map: hex_map::Map<MapVal> = hex_map::Map::new_hexagonal(size);
-    hex_map::write_file(filename, map);
+    hex_map::write_file(filename, map).expect("to write file");
 }

coordinates/src/hex.rs

@@ -10,10 +10,9 @@ Luminescent Dreams Tools is distributed in the hope that it will be useful, but
 You should have received a copy of the GNU General Public License along with Lumeto. If not, see <https://www.gnu.org/licenses/>.
 */
 
-/// Ĉi-tiu modulo enhavas la elementojn por kub-koordinato.
+/// This module contains the elements of cube coordinates.
 ///
 /// This code is based on https://www.redblobgames.com/grids/hexagons/
-use crate::Error;
 use std::collections::HashSet;
 
 /// An address within the hex coordinate system
@@ -62,7 +61,7 @@ impl AxialAddr {
     pub fn is_adjacent(&self, dest: &AxialAddr) -> bool {
         dest.adjacencies()
             .collect::<Vec<AxialAddr>>()
-            .contains(&self)
+            .contains(self)
     }
 
     /// Measure the distance to a destination
@@ -79,7 +78,7 @@ impl AxialAddr {
 
         positions.push(item);
 
-        while positions.len() > 0 {
+        while !positions.is_empty() {
             let elem = positions.remove(0);
             for adj in elem.adjacencies() {
                 if self.distance(&adj) <= distance && !results.contains(&adj) {

coordinates/src/hex_map.rs

@@ -14,7 +14,6 @@ use crate::{hex::AxialAddr, Error};
 use nom::{
     bytes::complete::tag,
     character::complete::alphanumeric1,
-    error::ParseError,
     multi::many1,
     sequence::{delimited, separated_pair},
     Finish, IResult, Parser,
@@ -81,7 +80,7 @@ pub fn parse_data<'a, A: Default + From<String>>(
     }
 
     let cells = data
-        .map(|line| parse_line::<A>(&line).unwrap())
+        .map(|line| parse_line::<A>(line).unwrap())
         .collect::<Vec<(AxialAddr, A)>>();
     let cells = cells.into_iter().collect::<HashMap<AxialAddr, A>>();
     Map { cells }

coordinates/src/lib.rs

@@ -9,9 +9,9 @@ Lumeto is distributed in the hope that it will be useful, but WITHOUT ANY WARRAN
 
 You should have received a copy of the GNU General Public License along with Lumeto. If not, see <https://www.gnu.org/licenses/>.
 */
-use thiserror;
+use thiserror::Error;
 
-#[derive(Debug, thiserror::Error)]
+#[derive(Debug, Error)]
 pub enum Error {
     #[error("IO error on reading or writing: {0}")]
     IO(std::io::Error),

crate-hashes.json

@@ -0,0 +1,491 @@
+{
+  "registry+https://github.com/rust-lang/crates.io-index#addr2line@0.24.2": "1hd1i57zxgz08j6h5qrhsnm2fi0bcqvsh389fw400xm3arz2ggnz",
+  "registry+https://github.com/rust-lang/crates.io-index#adler2@2.0.0": "09r6drylvgy8vv8k20lnbvwq8gp09h7smfn6h1rxsy15pgh629si",
+  "registry+https://github.com/rust-lang/crates.io-index#adler32@1.2.0": "0d7jq7jsjyhsgbhnfq5fvrlh9j0i9g1fqrl2735ibv5f75yjgqda",
+  "registry+https://github.com/rust-lang/crates.io-index#adler@1.0.2": "1zim79cvzd5yrkzl3nyfx0avijwgk9fqv3yrscdy1cc79ih02qpj",
+  "registry+https://github.com/rust-lang/crates.io-index#ahash@0.8.11": "04chdfkls5xmhp1d48gnjsmglbqibizs3bpbj6rsj604m10si7g8",
+  "registry+https://github.com/rust-lang/crates.io-index#aho-corasick@1.1.3": "05mrpkvdgp5d20y2p989f187ry9diliijgwrs254fs9s1m1x6q4f",
+  "registry+https://github.com/rust-lang/crates.io-index#allocator-api2@0.2.18": "0kr6lfnxvnj164j1x38g97qjlhb7akppqzvgfs0697140ixbav2w",
+  "registry+https://github.com/rust-lang/crates.io-index#android-tzdata@0.1.1": "1w7ynjxrfs97xg3qlcdns4kgfpwcdv824g611fq32cag4cdr96g9",
+  "registry+https://github.com/rust-lang/crates.io-index#android_system_properties@0.1.5": "04b3wrz12837j7mdczqd95b732gw5q7q66cv4yn4646lvccp57l1",
+  "registry+https://github.com/rust-lang/crates.io-index#annotate-snippets@0.9.2": "07p8r6jzb7nqydq0kr5pllckqcdxlyld2g275v425axnzffpxbyc",
+  "registry+https://github.com/rust-lang/crates.io-index#anstream@0.6.15": "09nm4qj34kiwgzczdvj14x7hgsb235g4sqsay3xsz7zqn4d5rqb4",
+  "registry+https://github.com/rust-lang/crates.io-index#anstyle-parse@0.2.5": "1jy12rvgbldflnb2x7mcww9dcffw1mx22nyv6p3n7d62h0gdwizb",
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+  "registry+https://github.com/rust-lang/crates.io-index#anyhow@1.0.89": "1xh1vg89n56h6nqikcmgbpmkixjds33492klrp9m96xrbmhgizc6",
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+  "registry+https://github.com/rust-lang/crates.io-index#zune-inflate@0.2.54": "00kg24jh3zqa3i6rg6yksnb71bch9yi1casqydl00s7nw8pk7avk"
+}

cyber-slides/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "cyber-slides"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+async-std = "1.13.0"
+cairo-rs    = "0.18"
+cyberpunk   = { path = "../cyberpunk" }
+gio         = "0.18"
+glib        = "0.18"
+gtk         = { version = "0.7", package = "gtk4" }
+serde       = { version = "1.0.210", features = ["derive"] }
+serde_yml   = "0.0.12"

cyber-slides/src/main.rs

@@ -0,0 +1,416 @@
+use std::{
+    cell::RefCell,
+    collections::HashMap,
+    fs::File,
+    io::Read,
+    ops::Index,
+    path::Path,
+    rc::Rc,
+    sync::{Arc, RwLock},
+    time::{Duration, Instant},
+};
+
+use cairo::{Context, Rectangle};
+use cyberpunk::{AsymLine, AsymLineCutout, GlowPen, Pen, Text};
+use glib::{GString, Object};
+use gtk::{
+    glib::{self, Propagation},
+    prelude::*,
+    subclass::prelude::*,
+    EventControllerKey,
+};
+use serde::{Deserialize, Serialize};
+
+const FPS: u64 = 60;
+const PURPLE: (f64, f64, f64) = (0.7, 0., 1.);
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Hash)]
+#[serde(rename_all = "lowercase")]
+enum Position {
+    Top,
+    Middle,
+    Bottom,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+struct Step {
+    text: String,
+    position: Position,
+    transition: Duration,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+struct Script(Vec<Step>);
+
+impl Script {
+    fn from_file(path: &Path) -> Result<Script, serde_yml::Error> {
+        let mut buf: Vec<u8> = Vec::new();
+        let mut f = File::open(path).unwrap();
+        f.read_to_end(&mut buf).unwrap();
+        let script = serde_yml::from_slice(&buf)?;
+        Ok(Self(script))
+    }
+
+    fn iter<'a>(&'a self) -> impl Iterator<Item = &'a Step> {
+        self.0.iter()
+    }
+
+    fn len(&self) -> usize {
+        self.0.len()
+    }
+}
+
+impl Default for Script {
+    fn default() -> Self {
+        Self(vec![])
+    }
+}
+
+impl Index<usize> for Script {
+    type Output = Step;
+
+    fn index(&self, index: usize) -> &Self::Output {
+        &self.0[index]
+    }
+}
+
+struct Fade {
+    text: String,
+    position: Position,
+    duration: Duration,
+
+    start_time: Instant,
+}
+
+trait Animation {
+    fn position(&self) -> Position;
+
+    fn tick(&self, now: Instant, context: &Context, width: f64);
+}
+
+impl Animation for Fade {
+    fn position(&self) -> Position {
+        self.position.clone()
+    }
+
+    fn tick(&self, now: Instant, context: &Context, width: f64) {
+        let total_frames = self.duration.as_secs() * FPS;
+        let alpha_rate: f64 = 1. / total_frames as f64;
+
+        let frames = (now - self.start_time).as_secs_f64() * FPS as f64;
+        let alpha = alpha_rate * frames as f64;
+
+        let text_display = Text::new(self.text.clone(), context, 64., width);
+        let _ = context.move_to(0., text_display.extents().height());
+        let _ = context.set_source_rgba(PURPLE.0, PURPLE.1, PURPLE.2, alpha);
+        text_display.draw();
+    }
+}
+
+struct CrossFade {
+    old_text: String,
+    new_text: String,
+    position: Position,
+    duration: Duration,
+
+    start_time: Instant,
+}
+
+impl Animation for CrossFade {
+    fn position(&self) -> Position {
+        self.position.clone()
+    }
+
+    fn tick(&self, now: Instant, context: &Context, width: f64) {
+        let total_frames = self.duration.as_secs() * FPS;
+        let alpha_rate: f64 = 1. / total_frames as f64;
+
+        let frames = (now - self.start_time).as_secs_f64() * FPS as f64;
+        let alpha = alpha_rate * frames as f64;
+
+        let text_display = Text::new(self.old_text.clone(), context, 64., width);
+        let _ = context.move_to(0., text_display.extents().height());
+        let _ = context.set_source_rgba(PURPLE.0, PURPLE.1, PURPLE.2, 1. - alpha);
+        text_display.draw();
+
+        let text_display = Text::new(self.new_text.clone(), context, 64., width);
+        let _ = context.move_to(0., text_display.extents().height());
+        let _ = context.set_source_rgba(PURPLE.0, PURPLE.1, PURPLE.2, alpha);
+        text_display.draw();
+    }
+}
+
+#[derive(Debug)]
+pub struct CyberScreenState {
+    script: Script,
+    idx: Option<usize>,
+    top: Option<Step>,
+    middle: Option<Step>,
+    bottom: Option<Step>,
+}
+
+impl Default for CyberScreenState {
+    fn default() -> Self {
+        Self {
+            script: Script(vec![]),
+            idx: None,
+            top: None,
+            middle: None,
+            bottom: None,
+        }
+    }
+}
+
+impl CyberScreenState {
+    fn new(script: Script) -> CyberScreenState {
+        let mut s = CyberScreenState::default();
+        s.script = script;
+        s
+    }
+
+    fn next_page(&mut self) -> Box<dyn Animation> {
+        let idx = match self.idx {
+            None => 0,
+            Some(idx) => {
+                if idx < self.script.len() {
+                    idx + 1
+                } else {
+                    idx
+                }
+            }
+        };
+        self.idx = Some(idx);
+        let step = self.script[idx].clone();
+
+        let (old, new) = match step.position {
+            Position::Top => {
+                let old = self.top.replace(step.clone());
+                (old, step)
+            }
+            Position::Middle => {
+                let old = self.middle.replace(step.clone());
+                (old, step)
+            }
+            Position::Bottom => {
+                let old = self.bottom.replace(step.clone());
+                (old, step)
+            }
+        };
+
+        match old {
+            Some(old) => Box::new(CrossFade {
+                old_text: old.text.clone(),
+                new_text: new.text.clone(),
+                position: new.position,
+                duration: new.transition,
+                start_time: Instant::now(),
+            }),
+            None => Box::new(Fade {
+                text: new.text.clone(),
+                position: new.position,
+                duration: new.transition,
+                start_time: Instant::now(),
+            }),
+        }
+    }
+}
+
+#[derive(Default)]
+pub struct CyberScreenPrivate {
+    state: Rc<RefCell<CyberScreenState>>,
+    // For crossfading to work, I have to detect that there is an old animation in a position, and
+    // replace it with the new one.
+    animations: Rc<RefCell<HashMap<Position, Box<dyn Animation>>>>,
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for CyberScreenPrivate {
+    const NAME: &'static str = "CyberScreen";
+    type Type = CyberScreen;
+    type ParentType = gtk::DrawingArea;
+}
+
+impl ObjectImpl for CyberScreenPrivate {}
+impl WidgetImpl for CyberScreenPrivate {}
+impl DrawingAreaImpl for CyberScreenPrivate {}
+
+impl CyberScreenPrivate {
+    fn set_script(&self, script: Script) {
+        *self.state.borrow_mut() = CyberScreenState::new(script);
+    }
+
+    fn next_page(&self) {
+        let transition = self.state.borrow_mut().next_page();
+        self.animations
+            .borrow_mut()
+            .insert(transition.position(), transition);
+    }
+}
+
+glib::wrapper! {
+    pub struct CyberScreen(ObjectSubclass<CyberScreenPrivate>) @extends gtk::DrawingArea, gtk::Widget;
+}
+
+impl CyberScreen {
+    fn new(script: Script) -> Self {
+        let s: Self = Object::builder().build();
+        s.imp().set_script(script);
+
+        s.set_draw_func({
+            let s = s.clone();
+            move |_, context, width, height| {
+                let now = Instant::now();
+                let _ = context.set_source_rgb(0., 0., 0.);
+                let _ = context.paint();
+
+                let pen = GlowPen::new(width, height, 2., 8., (0.7, 0., 1.));
+                AsymLineCutout {
+                    orientation: gtk::Orientation::Horizontal,
+                    start_x: 25.,
+                    start_y: height as f64 / 7.,
+                    start_length: width as f64 / 3.,
+                    cutout_length: width as f64 / 3. - 100.,
+                    height: 50.,
+                    end_length: width as f64 / 3. - 50.,
+                    invert: false,
+                }
+                .draw(&pen);
+                pen.stroke();
+
+                AsymLine {
+                    orientation: gtk::Orientation::Horizontal,
+                    start_x: width as f64 / 4.,
+                    start_y: height as f64 * 6. / 7.,
+                    start_length: width as f64 * 2. / 3. - 25.,
+                    height: 50.,
+                    end_length: 0.,
+                    invert: false,
+                }
+                .draw(&pen);
+                pen.stroke();
+
+                let tracery = pen.finish();
+                let _ = context.set_source(tracery);
+                let _ = context.paint();
+
+                let mut animations = s.imp().animations.borrow_mut();
+
+                let lr_margin = 50.;
+                let max_width = width as f64 - lr_margin * 2.;
+                let region_height = height as f64 / 5.;
+
+                if let Some(animation) = animations.get(&Position::Top) {
+                    let y = height as f64 * 1. / 5.;
+                    let surface = context
+                        .target()
+                        .create_for_rectangle(Rectangle::new(20., y, max_width, region_height))
+                        .unwrap();
+                    let ctx = Context::new(&surface).unwrap();
+                    animation.tick(now, &ctx, max_width);
+                }
+                if let Some(animation) = animations.get(&Position::Middle) {
+                    let y = height as f64 * 2. / 5.;
+                    let surface = context
+                        .target()
+                        .create_for_rectangle(Rectangle::new(20., y, max_width, region_height))
+                        .unwrap();
+                    let ctx = Context::new(&surface).unwrap();
+                    animation.tick(now, &ctx, max_width);
+                }
+                if let Some(animation) = animations.get(&Position::Bottom) {
+                    let y = height as f64 * 3. / 5.;
+                    let surface = context
+                        .target()
+                        .create_for_rectangle(Rectangle::new(20., y, max_width, region_height))
+                        .unwrap();
+                    let ctx = Context::new(&surface).unwrap();
+                    animation.tick(now, &ctx, max_width);
+                }
+            }
+        });
+
+        s
+    }
+
+    fn next_page(&self) {
+        self.imp().next_page();
+        self.queue_draw();
+    }
+}
+
+fn main() {
+    let script = Arc::new(RwLock::new(Script::default()));
+    let app = gtk::Application::builder()
+        .application_id("com.luminescent-dreams.cyberpunk-slideshow")
+        .build();
+
+    app.add_main_option(
+        "script",
+        glib::char::Char::from(b's'),
+        glib::OptionFlags::IN_MAIN,
+        glib::OptionArg::String,
+        "",
+        None,
+    );
+
+    app.connect_handle_local_options({
+        let script = script.clone();
+        move |_, options| {
+            if let Some(script_path) = options.lookup::<String>("script").unwrap() {
+                let mut script = script.write().unwrap();
+                *script = Script::from_file(Path::new(&script_path)).unwrap();
+                -1
+            } else {
+                1
+            }
+        }
+    });
+
+    app.connect_activate(move |app| {
+        let window = gtk::ApplicationWindow::new(app);
+        let screen = CyberScreen::new(script.read().unwrap().clone());
+
+        let events = EventControllerKey::new();
+
+        events.connect_key_released({
+            let app = app.clone();
+            let window = window.clone();
+            let screen = screen.clone();
+            move |_, key, _, _| {
+                let name = key
+                    .name()
+                    .map(|s| s.as_str().to_owned())
+                    .unwrap_or("".to_owned());
+                match name.as_ref() {
+                    "Right" => screen.next_page(),
+                    "q" => app.quit(),
+                    "Escape" => window.unfullscreen(),
+                    _ => {}
+                }
+            }
+        });
+
+        window.add_controller(events);
+
+        window.set_child(Some(&screen));
+        window.set_width_request(800);
+        window.set_height_request(600);
+        window.present();
+
+        window.connect_maximized_notify(|window| {
+            window.fullscreen();
+        });
+
+        let _ = glib::spawn_future_local({
+            let screen = screen.clone();
+            async move {
+                loop {
+                    screen.queue_draw();
+                    async_std::task::sleep(Duration::from_millis(1000 / FPS)).await;
+                }
+            }
+        });
+    });
+
+    app.run();
+}

cyberpunk-splash/Cargo.lock

@@ -0,0 +1,729 @@
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cyberpunk-splash/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "cyberpunk-splash"
+version = "0.1.0"
+edition = "2021"
+license = "GPL-3.0-only"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+cairo-rs    = { version = "0.18" }
+cyberpunk   = { path = "../cyberpunk" }
+gio         = { version = "0.18" }
+glib        = { version = "0.18" }
+gtk         = { version = "0.7", package = "gtk4" }

cyberpunk-splash/src/main.rs

@@ -0,0 +1,551 @@
+use cairo::{
+    Context, FontSlant, FontWeight, Format, ImageSurface, LineCap, LinearGradient, Pattern,
+    TextExtents,
+};
+use cyberpunk::{AsymLine, AsymLineCutout, GlowPen, Pen, SlashMeter};
+use glib::Object;
+use gtk::{prelude::*, subclass::prelude::*, EventControllerKey};
+use std::{
+    cell::RefCell,
+    rc::Rc,
+    sync::{Arc, RwLock},
+    time::{Duration, Instant},
+};
+
+const WIDTH: i32 = 1600;
+const HEIGHT: i32 = 600;
+
+#[derive(Clone, Copy, Debug)]
+pub enum State {
+    Running {
+        last_update: Instant,
+        deadline: Instant,
+        timeout: Option<TimeoutAnimation>,
+    },
+    Paused {
+        time_remaining: Duration,
+        timeout: Option<TimeoutAnimation>,
+    },
+}
+
+impl State {
+    fn new(countdown: Duration) -> Self {
+        Self::Paused {
+            time_remaining: countdown,
+            timeout: None,
+        }
+    }
+
+    fn start(&mut self) {
+        if let Self::Paused {
+            time_remaining,
+            timeout,
+        } = self
+        {
+            *self = Self::Running {
+                last_update: Instant::now(),
+                deadline: Instant::now() + *time_remaining,
+                timeout: *timeout,
+            };
+        }
+    }
+
+    fn pause(&mut self) {
+        if let Self::Running {
+            deadline, timeout, ..
+        } = self
+        {
+            *self = Self::Paused {
+                time_remaining: *deadline - Instant::now(),
+                timeout: *timeout,
+            }
+        }
+    }
+
+    fn start_pause(&mut self) {
+        match self {
+            Self::Running { .. } => self.pause(),
+            Self::Paused { .. } => self.start(),
+        }
+    }
+
+    fn run(&mut self, now: Instant) {
+        if let Self::Running {
+            last_update,
+            deadline,
+            timeout,
+        } = self
+        {
+            *last_update = now;
+            if let Some(ref mut timeout) = timeout {
+                // TODO: figure out the actual number of frames
+                timeout.tick(1);
+            }
+            if *last_update > *deadline && timeout.is_none() {
+                *timeout = Some(TimeoutAnimation {
+                    intensity: 1.,
+                    duration: 1.,
+                    ascending: false,
+                });
+            }
+        }
+    }
+}
+
+#[derive(Clone, Copy, Debug)]
+pub struct TimeoutAnimation {
+    intensity: f64,
+    duration: f64,
+    ascending: bool,
+}
+
+impl TimeoutAnimation {
+    fn tick(&mut self, frames_elapsed: u8) {
+        let step_size = 1. / (self.duration * 60.);
+        if self.ascending {
+            self.intensity += step_size * frames_elapsed as f64;
+            if self.intensity > 1. {
+                self.intensity = 1.0;
+                self.ascending = false;
+            }
+        } else {
+            self.intensity -= step_size * frames_elapsed as f64;
+            if self.intensity < 0. {
+                self.intensity = 0.0;
+                self.ascending = true;
+            }
+        }
+    }
+}
+
+pub struct SplashPrivate {
+    text: Rc<RefCell<String>>,
+    background: Rc<RefCell<Pattern>>,
+    time_extents: Rc<RefCell<Option<TextExtents>>>,
+    width: Rc<RefCell<i32>>,
+    height: Rc<RefCell<i32>>,
+
+    state: Rc<RefCell<State>>,
+}
+
+impl SplashPrivate {
+    fn set_text(&self, text: String) {
+        *self.text.borrow_mut() = text;
+    }
+
+    fn set_state(&self, state: State) {
+        *self.state.borrow_mut() = state;
+    }
+
+    fn redraw_background(&self) {
+        let pen = GlowPen::new(
+            *self.width.borrow(),
+            *self.height.borrow(),
+            2.,
+            8.,
+            (0.7, 0., 1.),
+        );
+
+        let background =
+            ImageSurface::create(Format::Rgb24, *self.width.borrow(), *self.height.borrow())
+                .unwrap();
+        let context = Context::new(background).unwrap();
+        context.push_group();
+        context.set_source_rgb(0., 0., 0.);
+        let _ = context.paint();
+
+        context.select_font_face("Alegreya Sans SC", FontSlant::Normal, FontWeight::Bold);
+
+        {
+            context.set_source_rgb(0.7, 0., 1.);
+
+            let hashtag = "#CodingTogether";
+            context.set_font_size(64.);
+            let extents = context.text_extents(hashtag).unwrap();
+
+            context.move_to(20., extents.height() + 40.);
+            let _ = context.show_text(hashtag);
+
+            AsymLine {
+                orientation: gtk::Orientation::Horizontal,
+                start_x: 10.,
+                start_y: extents.height() + 10.,
+                start_length: 0.,
+                height: extents.height() / 2.,
+                end_length: 0.,
+                invert: false,
+            }
+            .draw(&pen);
+            pen.stroke();
+
+            AsymLine {
+                orientation: gtk::Orientation::Horizontal,
+                start_x: 20.,
+                start_y: extents.height() + 60.,
+                start_length: extents.width(),
+                height: extents.height() / 2.,
+                end_length: 0.,
+                invert: false,
+            }
+            .draw(&pen);
+            pen.stroke();
+        }
+
+        {
+            context.set_font_size(128.);
+
+            let center_x = *self.width.borrow() as f64 / 2.;
+            let center_y = *self.height.borrow() as f64 / 2.;
+
+            let title_extents = context.text_extents(&self.text.borrow()).unwrap();
+            let title_width = title_extents.width();
+            let title_height = title_extents.height();
+
+            {
+                let start_length = center_x - title_width / 2. - title_height - 20.;
+
+                let title_cutout = AsymLineCutout {
+                    orientation: gtk::Orientation::Horizontal,
+                    start_x: 20.,
+                    start_y: center_y - 20. - title_height / 2.,
+                    start_length,
+                    end_length: *self.width.borrow() as f64 - 120. - start_length,
+                    cutout_length: title_width,
+                    height: title_height,
+                    invert: false,
+                };
+
+                title_cutout.draw(&pen);
+                pen.stroke();
+            }
+
+            {
+                let title_baseline_x = center_x - title_width / 2.;
+                let title_baseline_y = center_y - 20.;
+
+                let gradient = LinearGradient::new(
+                    title_baseline_x,
+                    title_baseline_y - title_height,
+                    title_baseline_x,
+                    title_baseline_y,
+                );
+                gradient.add_color_stop_rgb(0.2, 0.7, 0.0, 1.0);
+                gradient.add_color_stop_rgb(0.8, 0.2, 0.0, 1.0);
+                context.move_to(title_baseline_x, title_baseline_y);
+                let _ = context.set_source(gradient);
+                let _ = context.show_text(&self.text.borrow());
+            }
+        }
+
+        {
+            AsymLine {
+                orientation: gtk::Orientation::Horizontal,
+                start_x: 100.,
+                start_y: *self.height.borrow() as f64 / 2. + 100.,
+                start_length: 400.,
+                height: 50.,
+                end_length: 0.,
+                invert: true,
+            }
+            .draw(&pen);
+            pen.stroke();
+        }
+
+        {
+            context.set_source_rgb(0.7, 0., 1.);
+            AsymLine {
+                orientation: gtk::Orientation::Horizontal,
+                start_x: *self.width.borrow() as f64 / 2. + 100.,
+                start_y: *self.height.borrow() as f64 / 2. + 200.,
+                start_length: 600.,
+                height: 50.,
+                end_length: 0.,
+                invert: false,
+            }
+            .draw(&pen);
+            pen.stroke();
+        }
+
+        let tracery = pen.finish();
+        let _ = context.set_source(tracery);
+        let _ = context.paint();
+
+        let background = context.pop_group().unwrap();
+
+        *self.background.borrow_mut() = background;
+    }
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for SplashPrivate {
+    const NAME: &'static str = "Splash";
+    type Type = Splash;
+    type ParentType = gtk::DrawingArea;
+
+    fn new() -> SplashPrivate {
+        // Set up a default plain black background
+        let background = ImageSurface::create(Format::Rgb24, WIDTH, HEIGHT).unwrap();
+        let context = Context::new(background).unwrap();
+        context.push_group();
+        context.set_source_rgb(0., 0., 0.);
+        let _ = context.paint();
+        let background = context.pop_group().unwrap();
+
+        SplashPrivate {
+            text: Rc::new(RefCell::new(String::from(""))),
+            background: Rc::new(RefCell::new(background)),
+            time_extents: Rc::new(RefCell::new(None)),
+            width: Rc::new(RefCell::new(WIDTH)),
+            height: Rc::new(RefCell::new(HEIGHT)),
+
+            state: Rc::new(RefCell::new(State::new(Duration::ZERO))),
+        }
+    }
+}
+impl ObjectImpl for SplashPrivate {}
+impl WidgetImpl for SplashPrivate {}
+impl DrawingAreaImpl for SplashPrivate {}
+
+glib::wrapper! {
+    pub struct Splash(ObjectSubclass<SplashPrivate>) @extends gtk::DrawingArea, gtk::Widget;
+}
+
+impl Splash {
+    pub fn new(text: String, state: State) -> Self {
+        let s: Self = Object::builder().build();
+        s.set_width_request(WIDTH);
+        s.set_height_request(HEIGHT);
+
+        s.imp().set_text(text);
+        s.imp().set_state(state);
+        s.imp().redraw_background();
+
+        s.set_draw_func({
+            let s = s.clone();
+            move |_, context, width, height| {
+                let background = s.imp().background.borrow();
+                let _ = context.set_source(&*background);
+                let _ = context.paint();
+
+                let state = *s.imp().state.borrow();
+
+                let time = match state {
+                    State::Running { deadline, .. } => deadline - Instant::now(),
+                    State::Paused { time_remaining, .. } => time_remaining,
+                };
+                let minutes = time.as_secs() / 60;
+                let seconds = time.as_secs() % 60;
+
+                let center_x = width as f64 / 2.;
+                let center_y = height as f64 / 2.;
+
+                {
+                    context.select_font_face(
+                        "Alegreya Sans SC",
+                        FontSlant::Normal,
+                        FontWeight::Bold,
+                    );
+                    context.set_font_size(128.);
+
+                    let time = format!("{:02}' {:02}\"", minutes, seconds);
+
+                    let time_extents = context.text_extents(&time).unwrap();
+
+                    let mut saved_extents = s.imp().time_extents.borrow_mut();
+                    if saved_extents.is_none() {
+                        *saved_extents = Some(time_extents);
+                    }
+
+                    let time_baseline_x = center_x - time_extents.width() / 2.;
+                    let time_baseline_y = center_y + 100.;
+
+                    let gradient = LinearGradient::new(
+                        time_baseline_x,
+                        time_baseline_y - time_extents.height(),
+                        time_baseline_x,
+                        time_baseline_y,
+                    );
+                    let (running, timeout_animation) = match state {
+                        State::Running { timeout, .. } => (true, timeout),
+                        State::Paused { timeout, .. } => (false, timeout),
+                    };
+                    match timeout_animation {
+                        Some(ref animation) => {
+                            gradient.add_color_stop_rgba(0.2, 0.2, 0.0, 1.0, animation.intensity);
+                            gradient.add_color_stop_rgba(0.8, 0.7, 0.0, 1.0, animation.intensity);
+                            let _ = context.set_source(gradient);
+                        }
+                        None => {
+                            if running {
+                                gradient.add_color_stop_rgb(0.2, 0.2, 0.0, 1.0);
+                                gradient.add_color_stop_rgb(0.8, 0.7, 0.0, 1.0);
+                                let _ = context.set_source(gradient);
+                            } else {
+                                context.set_source_rgb(0.3, 0.3, 0.3);
+                            }
+                        }
+                    }
+                    context.move_to(time_baseline_x, time_baseline_y);
+                    let _ = context.show_text(&time);
+                };
+
+                if let Some(extents) = *s.imp().time_extents.borrow() {
+                    context.set_source_rgb(0.7, 0.0, 1.0);
+                    let time_meter = SlashMeter {
+                        orientation: gtk::Orientation::Horizontal,
+                        start_x: center_x + extents.width() / 2. + 50.,
+                        start_y: center_y + 100.,
+                        count: 5,
+                        fill_count: minutes as u8,
+                        height: 60.,
+                        length: 100.,
+                    };
+                    time_meter.draw(context);
+                }
+            }
+        });
+
+        s.connect_resize(|s, width, height| {
+            *s.imp().width.borrow_mut() = width;
+            *s.imp().height.borrow_mut() = height;
+            s.imp().redraw_background();
+        });
+
+        s
+    }
+
+    pub fn set_state(&self, state: State) {
+        self.imp().set_state(state);
+        self.queue_draw();
+    }
+}
+
+
+fn main() {
+    let app = gtk::Application::builder()
+        .application_id("com.luminescent-dreams.cyberpunk-splash")
+        .flags(gio::ApplicationFlags::HANDLES_OPEN)
+        .build();
+
+    app.add_main_option(
+        "title",
+        glib::char::Char::from(b't'),
+        glib::OptionFlags::IN_MAIN,
+        glib::OptionArg::String,
+        "",
+        None,
+    );
+    app.add_main_option(
+        "countdown",
+        glib::char::Char::from(b'c'),
+        glib::OptionFlags::IN_MAIN,
+        glib::OptionArg::String,
+        "",
+        None,
+    );
+
+    let state = Arc::new(RwLock::new(State::new(Duration::from_secs(5 * 60))));
+    let title = Arc::new(RwLock::new("".to_owned()));
+
+    app.connect_command_line(|_, _args| {
+        println!("connect_command_line");
+        1
+    });
+    app.connect_handle_local_options({
+        let title = title.clone();
+        let state = state.clone();
+        move |_, options| {
+            println!("connect_handle_local_options");
+            *title.write().unwrap() = options.lookup::<String>("title").unwrap().unwrap();
+            let countdown = match options.lookup::<String>("countdown") {
+                Ok(Some(countdown_str)) => {
+                    let parts = countdown_str.split(':').collect::<Vec<&str>>();
+                    match parts.len() {
+                        2 => {
+                            let minutes = parts[0].parse::<u64>().unwrap();
+                            let seconds = parts[1].parse::<u64>().unwrap();
+                            Duration::from_secs(minutes * 60 + seconds)
+                        }
+                        1 => {
+                            let seconds = parts[1].parse::<u64>().unwrap();
+                            Duration::from_secs(seconds)
+                        }
+                        _ => Duration::from_secs(300),
+                    }
+                }
+                _ => Duration::from_secs(300),
+            };
+            match *state.write().unwrap() {
+                State::Running {
+                    ref mut deadline, ..
+                } => *deadline = Instant::now() + countdown,
+                State::Paused {
+                    ref mut time_remaining,
+                    ..
+                } => *time_remaining = countdown,
+            }
+            -1
+        }
+    });
+
+    app.connect_open(move |app, files, args| {
+        println!("called open");
+        println!("files: {}", files.len());
+        println!("args: {}", args);
+
+        app.activate();
+    });
+
+    app.connect_activate(move |app| {
+        let (gtk_tx, gtk_rx) =
+            gtk::glib::MainContext::channel::<State>(gtk::glib::Priority::DEFAULT);
+
+        let window = gtk::ApplicationWindow::new(app);
+        window.present();
+
+        let splash = Splash::new(title.read().unwrap().clone(), *state.read().unwrap());
+
+        window.set_child(Some(&splash));
+
+        window.connect_maximized_notify(|window| {
+            window.fullscreen();
+        });
+
+        let keyboard_events = EventControllerKey::new();
+        keyboard_events.connect_key_released({
+            let window = window.clone();
+            let state = state.clone();
+            move |_, key, _, _| {
+                let name = key
+                    .name()
+                    .map(|s| s.as_str().to_owned())
+                    .unwrap_or("".to_owned());
+                match name.as_ref() {
+                    "Escape" => window.unfullscreen(),
+                    "space" => state.write().unwrap().start_pause(),
+                    _ => {}
+                }
+            }
+        });
+        window.add_controller(keyboard_events);
+
+        gtk_rx.attach(None, move |state| {
+            splash.set_state(state);
+            glib::ControlFlow::Continue
+        });
+
+        std::thread::spawn({
+            let state = state.clone();
+            move || {
+                state.write().unwrap().start();
+                loop {
+                    std::thread::sleep(Duration::from_millis(1000 / 60));
+                    state.write().unwrap().run(Instant::now());
+                    let _ = gtk_tx.send(*state.read().unwrap());
+                }
+            }
+        });
+    });
+
+    app.run();
+}

cyberpunk/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "cyberpunk"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+cairo-rs    = { version = "0.18" }
+gio         = { version = "0.18" }
+glib        = { version = "0.18" }
+gtk         = { version = "0.7", package = "gtk4" }

cyberpunk/src/lib.rs

@@ -0,0 +1,301 @@
+use cairo::{
+    Context, FontSlant, FontWeight, Format, ImageSurface, LineCap, Pattern,
+    TextExtents,
+};
+
+pub struct AsymLineCutout {
+    pub orientation: gtk::Orientation,
+    pub start_x: f64,
+    pub start_y: f64,
+    pub start_length: f64,
+    pub cutout_length: f64,
+    pub end_length: f64,
+    pub height: f64,
+    pub invert: bool,
+}
+
+impl AsymLineCutout {
+    pub fn draw(&self, pen: &impl Pen) {
+        let dodge = if self.invert {
+            self.height
+        } else {
+            -self.height
+        };
+        match self.orientation {
+            gtk::Orientation::Horizontal => {
+                pen.move_to(self.start_x, self.start_y);
+                pen.line_to(self.start_x + self.start_length, self.start_y);
+                pen.line_to(
+                    self.start_x + self.start_length + self.height,
+                    self.start_y + dodge,
+                );
+                pen.line_to(
+                    self.start_x + self.start_length + self.height + self.cutout_length,
+                    self.start_y + dodge,
+                );
+                pen.line_to(
+                    self.start_x
+                        + self.start_length
+                        + self.height
+                        + self.cutout_length
+                        + (self.height / 2.),
+                    self.start_y + dodge / 2.,
+                );
+                pen.line_to(
+                    self.start_x
+                        + self.start_length
+                        + self.height
+                        + self.cutout_length
+                        + (self.height / 2.)
+                        + self.end_length,
+                    self.start_y + dodge / 2.,
+                );
+            }
+            gtk::Orientation::Vertical => {
+                pen.move_to(self.start_x, self.start_y);
+                pen.line_to(self.start_x, self.start_y + self.start_length);
+                pen.line_to(
+                    self.start_x + dodge,
+                    self.start_y + self.start_length + self.height,
+                );
+                pen.line_to(
+                    self.start_x + dodge,
+                    self.start_y + self.start_length + self.height + self.cutout_length,
+                );
+                pen.line_to(
+                    self.start_x + dodge / 2.,
+                    self.start_y
+                        + self.start_length
+                        + self.height
+                        + self.cutout_length
+                        + (self.height / 2.),
+                );
+                pen.line_to(
+                    self.start_x + dodge / 2.,
+                    self.start_y
+                        + self.start_length
+                        + self.height
+                        + self.cutout_length
+                        + (self.height / 2.)
+                        + self.end_length,
+                );
+            }
+            _ => panic!("unknown orientation"),
+        }
+    }
+}
+
+// Represents an asymetrical line that starts at one location, then a 45-degree angle and then
+// another line afterwards.
+pub struct AsymLine {
+    // Will this be drawn left-to-right or up-to-down?
+    pub orientation: gtk::Orientation,
+
+    // Starting address
+    pub start_x: f64,
+    pub start_y: f64,
+
+    // Length of the first segment
+    pub start_length: f64,
+
+    // Height to dodge over to the next section
+    pub height: f64,
+
+    // Total length of the entire line.
+    pub end_length: f64,
+
+    // When normal, the angle dodge is upwards. When inverted, the angle dodge is downwards.
+    pub invert: bool,
+}
+
+impl AsymLine {
+    pub fn draw(&self, pen: &impl Pen) {
+        let dodge = if self.invert {
+            self.height
+        } else {
+            -self.height
+        };
+        match self.orientation {
+            gtk::Orientation::Horizontal => {
+                pen.move_to(self.start_x, self.start_y);
+                pen.line_to(self.start_x + self.start_length, self.start_y);
+                pen.line_to(
+                    self.start_x + self.start_length + self.height,
+                    self.start_y + dodge,
+                );
+                pen.line_to(
+                    self.start_x + self.start_length + self.height + self.end_length,
+                    self.start_y + dodge,
+                );
+            }
+            gtk::Orientation::Vertical => {}
+            _ => panic!("unknown orientation"),
+        }
+    }
+}
+
+pub struct SlashMeter {
+    pub orientation: gtk::Orientation,
+    pub start_x: f64,
+    pub start_y: f64,
+    pub count: u8,
+    pub fill_count: u8,
+    pub height: f64,
+    pub length: f64,
+}
+
+impl SlashMeter {
+    pub fn draw(&self, context: &Context) {
+        match self.orientation {
+            gtk::Orientation::Horizontal => {
+                let angle: f64 = 0.8;
+                let run = self.height / angle.tan();
+                let width = self.length / (self.count as f64 * 2.);
+
+                for c in 0..self.count {
+                    context.set_line_width(1.);
+
+                    let start_x = self.start_x + c as f64 * width * 2.;
+                    context.move_to(start_x, self.start_y);
+                    context.line_to(start_x + run, self.start_y - self.height);
+                    context.line_to(start_x + run + width, self.start_y - self.height);
+                    context.line_to(start_x + width, self.start_y);
+                    context.line_to(start_x, self.start_y);
+                    if c < self.fill_count {
+                        let _ = context.fill();
+                    } else {
+                        let _ = context.stroke();
+                    }
+                }
+            }
+            gtk::Orientation::Vertical => {}
+            _ => panic!("unknown orientation"),
+        }
+    }
+}
+
+/// Represents a pen for drawing a pattern. This is good for complex patterns that may require
+/// multiple identical steps.
+pub trait Pen {
+    /// Move the pen to a location.
+    fn move_to(&self, x: f64, y: f64);
+
+    /// Draw a line from the current location to the specified destination.
+    fn line_to(&self, x: f64, y: f64);
+
+    /// Instantiate the line.
+    fn stroke(&self);
+
+    /// Convert all of the drawing into a pattern that can be painted to a drawing context.
+    fn finish(self) -> Pattern;
+}
+
+pub struct GlowPen {
+    blur_context: Context,
+    draw_context: Context,
+}
+
+impl GlowPen {
+    pub fn new(
+        width: i32,
+        height: i32,
+        line_width: f64,
+        blur_line_width: f64,
+        color: (f64, f64, f64),
+    ) -> Self {
+        let blur_context =
+            Context::new(ImageSurface::create(Format::Rgb24, width, height).unwrap()).unwrap();
+        blur_context.set_line_width(blur_line_width);
+        blur_context.set_source_rgba(color.0, color.1, color.2, 0.5);
+        blur_context.push_group();
+        blur_context.set_line_cap(LineCap::Round);
+
+        let draw_context =
+            Context::new(ImageSurface::create(Format::Rgb24, width, height).unwrap()).unwrap();
+        draw_context.set_line_width(line_width);
+        draw_context.set_source_rgb(color.0, color.1, color.2);
+        draw_context.push_group();
+        draw_context.set_line_cap(LineCap::Round);
+
+        Self {
+            blur_context,
+            draw_context,
+        }
+    }
+}
+
+impl Pen for GlowPen {
+    fn move_to(&self, x: f64, y: f64) {
+        self.blur_context.move_to(x, y);
+        self.draw_context.move_to(x, y);
+    }
+
+    fn line_to(&self, x: f64, y: f64) {
+        self.blur_context.line_to(x, y);
+        self.draw_context.line_to(x, y);
+    }
+
+    fn stroke(&self) {
+        self.blur_context.stroke().expect("to draw the blur line");
+        self.draw_context
+            .stroke()
+            .expect("to draw the regular line");
+    }
+
+    fn finish(self) -> Pattern {
+        let foreground = self.draw_context.pop_group().unwrap();
+        self.blur_context.set_source(foreground).unwrap();
+        self.blur_context.paint().unwrap();
+        self.blur_context.pop_group().unwrap()
+    }
+}
+
+pub struct Text<'a> {
+    content: Vec<String>,
+    context: &'a Context,
+}
+
+impl<'a> Text<'a> {
+    pub fn new(content: String, context: &'a Context, size: f64, width: f64) -> Self {
+        context.select_font_face("Alegreya Sans SC", FontSlant::Normal, FontWeight::Bold);
+        context.set_font_size(size);
+
+        let lines = word_wrap(content, context, width);
+
+        Self { content: lines, context }
+    }
+
+    pub fn extents(&self) -> TextExtents {
+        self.context.text_extents(&self.content[0]).unwrap()
+    }
+
+    pub fn draw(&self) {
+        let mut baseline = 0.;
+        for line in self.content.iter() {
+            baseline += self.context.text_extents(line).unwrap().height() + 10.;
+            self.context.move_to(0., baseline);
+            let _ = self.context.show_text(&line);
+        }
+    }
+}
+
+fn word_wrap(content: String, context: &Context, max_width: f64) -> Vec<String> {
+    let mut lines = vec![];
+    let words: Vec<&str> = content.split_whitespace().collect();
+    let mut start: usize = 0;
+    let mut line = String::new();
+
+    for idx in 0..words.len() + 1 {
+        line = words[start..idx].join(" ");
+        let extents = context.text_extents(&line).unwrap();
+        if extents.width() > max_width {
+            let line = words[start..idx-1].join(" ");
+            start = idx-1;
+            lines.push(line.clone());
+        }
+    }
+    if line.len() > 0 {
+        lines.push(line);
+    }
+    lines
+}

dashboard/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "dashboard"
+version = "0.1.3"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+adw                 = { version = "0.5", package = "libadwaita", features = [ "v1_2" ] }
+async-std           = { version = "1.13" }
+cairo-rs            = { version = "0.18" }
+chrono              = { version = "0.4", features = ["serde"] }
+fluent-ergonomics   = { path = "../fluent-ergonomics/" }
+fluent              = { version = "0.16" }
+futures             = { version = "0.3" }
+geo-types           = { path = "../geo-types/" }
+gio                 = { version = "0.18" }
+glib                = { version = "0.18" }
+gdk                 = { version = "0.7", package = "gdk4" }
+gtk                 = { version = "0.7", package = "gtk4" }
+lazy_static         = { version = "1.4" }
+memorycache         = { path = "../memorycache/" }
+reqwest             = { version = "0.11", features = ["json"] }
+serde_json          = { version = "1" }
+serde               = { version = "1", features = [ "derive" ] }
+tokio               = { version = "1", features = ["full"] }
+unic-langid         = { version = "0.9" }
+
+[build-dependencies]
+glib-build-tools = "0.18"
+

dashboard/build.rs

@@ -0,0 +1,7 @@
+fn main() {
+    glib_build_tools::compile_resources(
+        &["resources"],
+        "gresources.xml",
+        "com.luminescent-dreams.dashboard.gresource",
+    );
+}

dashboard/dashboard.desktop

@@ -0,0 +1,6 @@
+[Desktop Entry]
+Type=Application
+Version=1.0
+Name=dashboard
+Comment=My personal system dashboard
+Exec=dashboard

dashboard/dist.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+VERSION=`cat Cargo.toml | grep "^version =" | sed -r 's/^version = "(.+)"$/\1/'`
+
+mkdir -p dist
+cp dashboard.desktop dist
+cp ../target/release/dashboard dist
+strip dist/dashboard
+tar -czf dashboard-${VERSION}.tgz dist/
+

dashboard/gresources.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+    <gresource prefix="/com/luminescent-dreams/dashboard/">
+        <file>style.css</file>
+    </gresource>
+</gresources>
+

dashboard/resources/style.css

@@ -0,0 +1,9 @@
+label {
+    font-size: 200%;
+    padding: 4px;
+}
+
+.highlight {
+    color: @accent_fg_color;
+    background-color: @accent_bg_color;
+}

dashboard/src/app_window.rs

@@ -0,0 +1,77 @@
+use crate::{
+    components::{Date, Events, TransitCard, TransitClock},
+    types::State,
+};
+use adw::prelude::AdwApplicationWindowExt;
+use gio::resources_lookup_data;
+use gtk::{prelude::*, STYLE_PROVIDER_PRIORITY_USER};
+
+#[derive(Clone)]
+pub struct ApplicationWindow {
+    pub window: adw::ApplicationWindow,
+    pub date_label: Date,
+    pub events: Events,
+    pub transit_card: TransitCard,
+    pub transit_clock: TransitClock,
+}
+
+impl ApplicationWindow {
+    pub fn new(app: &adw::Application) -> Self {
+        let window = adw::ApplicationWindow::new(app);
+
+        let stylesheet = String::from_utf8(
+            resources_lookup_data(
+                "/com/luminescent-dreams/dashboard/style.css",
+                gio::ResourceLookupFlags::NONE,
+            )
+            .expect("stylesheet should just be available")
+            .to_vec(),
+        )
+        .expect("to parse stylesheet");
+
+        let provider = gtk::CssProvider::new();
+        provider.load_from_data(&stylesheet);
+        let context = window.style_context();
+        context.add_provider(&provider, STYLE_PROVIDER_PRIORITY_USER);
+
+        let layout = gtk::Box::builder()
+            .orientation(gtk::Orientation::Vertical)
+            .hexpand(true)
+            .vexpand(true)
+            .build();
+
+        let date_label = Date::default();
+        let header = adw::HeaderBar::builder()
+            .title_widget(&date_label)
+            .build();
+        layout.append(&header);
+
+        let events = Events::default();
+        layout.append(&events);
+
+        let transit_card = TransitCard::default();
+        layout.append(&transit_card);
+
+        let transit_clock = TransitClock::default();
+        layout.append(&transit_clock);
+
+        window.set_content(Some(&layout));
+
+        Self {
+            window,
+            date_label,
+            events,
+            transit_card,
+            transit_clock,
+        }
+    }
+
+    pub fn update_state(&self, state: State) {
+        self.date_label.update_date(state.date);
+        self.events.set_events(state.events, state.next_event);
+        if let Some(transit) = state.transit {
+            self.transit_card.update_transit(&transit);
+            self.transit_clock.update_transit(transit);
+        }
+    }
+}

dashboard/src/components/date.rs

@@ -0,0 +1,65 @@
+use std::{cell::RefCell, rc::Rc};
+
+use chrono::NaiveDate;
+use glib::Object;
+use gtk::{prelude::*, subclass::prelude::*};
+
+pub struct DatePrivate {
+    date: Rc<RefCell<NaiveDate>>,
+    label: Rc<RefCell<gtk::Label>>,
+}
+
+impl Default for DatePrivate {
+    fn default() -> Self {
+        let date = chrono::Local::now().date_naive();
+        Self {
+            date: Rc::new(RefCell::new(date)),
+            label: Rc::new(RefCell::new(gtk::Label::new(None))),
+        }
+    }
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for DatePrivate {
+    const NAME: &'static str = "Date";
+    type Type = Date;
+    type ParentType = gtk::Box;
+}
+
+impl ObjectImpl for DatePrivate {}
+impl WidgetImpl for DatePrivate {}
+impl BoxImpl for DatePrivate {}
+
+glib::wrapper! {
+    pub struct Date(ObjectSubclass<DatePrivate>) @extends gtk::Box, gtk::Widget;
+}
+
+impl Default for Date {
+    fn default() -> Self {
+        let s: Self = Object::builder().build();
+        s.set_margin_bottom(8);
+        s.set_margin_top(8);
+        s.set_margin_start(8);
+        s.set_margin_end(8);
+
+        s.append(&*s.imp().label.borrow());
+
+        s.redraw();
+        s
+    }
+}
+
+impl Date {
+    pub fn update_date(&self, date: NaiveDate) {
+        *self.imp().date.borrow_mut() = date;
+        self.redraw();
+    }
+
+    fn redraw(&self) {
+        let date = self.imp().date.borrow();
+        self.imp()
+            .label
+            .borrow_mut()
+            .set_text(&date.format("%Y %B %d").to_string());
+    }
+}

dashboard/src/components/events.rs

@@ -0,0 +1,95 @@
+use crate::{
+    components::Date,
+    solstices::{self, YearlyEvents},
+};
+use glib::Object;
+use gtk::{prelude::*, subclass::prelude::*};
+
+/*
+#[derive(PartialEq)]
+pub enum UpcomingEvent {
+    SpringEquinox,
+    SummerSolstice,
+    AutumnEquinox,
+    WinterSolstice,
+}
+*/
+
+#[derive(Default)]
+pub struct EventsPrivate {
+    spring_equinox: Date,
+    summer_solstice: Date,
+    autumn_equinox: Date,
+    winter_solstice: Date,
+    // next: UpcomingEvent,
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for EventsPrivate {
+    const NAME: &'static str = "Events";
+    type Type = Events;
+    type ParentType = gtk::Box;
+}
+
+impl ObjectImpl for EventsPrivate {}
+impl WidgetImpl for EventsPrivate {}
+impl BoxImpl for EventsPrivate {}
+
+glib::wrapper! {
+    pub struct Events(ObjectSubclass<EventsPrivate>) @extends gtk::Widget, gtk::Box, @implements gtk::Orientable;
+}
+
+impl Default for Events {
+    fn default() -> Self {
+        let s: Self = Object::builder().build();
+        s.set_orientation(gtk::Orientation::Horizontal);
+        s.set_spacing(8);
+
+        s.append(&s.imp().spring_equinox);
+        s.append(&s.imp().summer_solstice);
+        s.append(&s.imp().autumn_equinox);
+        s.append(&s.imp().winter_solstice);
+
+        s
+    }
+}
+
+impl Events {
+    pub fn set_events(&self, events: YearlyEvents, next_event: solstices::Event) {
+        self.imp()
+            .spring_equinox
+            .update_date(events.spring_equinox.date_naive());
+
+        self.imp()
+            .summer_solstice
+            .update_date(events.summer_solstice.date_naive());
+
+        self.imp()
+            .autumn_equinox
+            .update_date(events.autumn_equinox.date_naive());
+
+        self.imp()
+            .winter_solstice
+            .update_date(events.winter_solstice.date_naive());
+
+        self.imp().spring_equinox.remove_css_class("highlight");
+        self.imp().summer_solstice.remove_css_class("highlight");
+        self.imp().autumn_equinox.remove_css_class("highlight");
+        self.imp().winter_solstice.remove_css_class("highlight");
+
+        match next_event {
+            solstices::Event::SpringEquinox(_) => {
+                self.imp().spring_equinox.add_css_class("highlight")
+            }
+            solstices::Event::SummerSolstice(_) => {
+                self.imp().summer_solstice.add_css_class("highlight")
+            }
+            solstices::Event::AutumnEquinox(_) => {
+                self.imp().autumn_equinox.add_css_class("highlight")
+            }
+            solstices::Event::WinterSolstice(_) => {
+                self.imp().winter_solstice.add_css_class("highlight")
+            }
+        }
+    }
+}

dashboard/src/components/label.rs

@@ -0,0 +1,57 @@
+use glib::Object;
+use gtk::{prelude::*, subclass::prelude::*};
+
+#[derive(Default)]
+pub struct LabelPrivate {
+    label: gtk::Label,
+    icon: gtk::Image,
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for LabelPrivate {
+    const NAME: &'static str = "Label";
+    type Type = Label;
+    type ParentType = gtk::Box;
+}
+
+impl ObjectImpl for LabelPrivate {}
+impl WidgetImpl for LabelPrivate {}
+impl BoxImpl for LabelPrivate {}
+
+glib::wrapper! {
+    pub struct Label(ObjectSubclass<LabelPrivate>) @extends gtk::Box, gtk::Widget,
+        @implements gtk::Orientable;
+}
+
+impl Label {
+    pub fn new(text: Option<&str>, icon: Option<gio::ThemedIcon>) -> Self {
+        let s: Self = Object::builder().build();
+        s.set_orientation(gtk::Orientation::Horizontal);
+        s.set_spacing(8);
+        s.set_margin_bottom(8);
+        s.set_margin_top(8);
+        s.set_margin_start(8);
+        s.set_margin_end(8);
+
+        s.append(&s.imp().icon);
+        s.append(&s.imp().label);
+
+        if let Some(text) = text {
+            s.set_text(text);
+        }
+
+        if let Some(icon) = icon {
+            s.set_icon(icon);
+        }
+
+        s
+    }
+
+    pub fn set_text(&self, text: &str) {
+        self.imp().label.set_text(text);
+    }
+
+    pub fn set_icon(&self, icon: gio::ThemedIcon) {
+        self.imp().icon.set_from_gicon(&icon);
+    }
+}

dashboard/src/components/mod.rs

@@ -0,0 +1,14 @@
+mod date;
+pub use date::Date;
+
+mod events;
+pub use events::Events;
+
+mod label;
+pub use label::Label;
+
+mod transit_card;
+pub use transit_card::TransitCard;
+
+mod transit_clock;
+pub use transit_clock::TransitClock;

dashboard/src/components/transit_card.rs

@@ -0,0 +1,74 @@
+use crate::{components::Label, soluna_client::SunMoon};
+use glib::Object;
+use gtk::{prelude::*, subclass::prelude::*};
+
+pub struct TransitCardPrivate {
+    sunrise: Label,
+    sunset: Label,
+    moonrise: Label,
+    moonset: Label,
+}
+
+impl Default for TransitCardPrivate {
+    fn default() -> Self {
+        Self {
+            sunrise: Label::new(None, Some(gio::ThemedIcon::new("daytime-sunrise-symbolic"))),
+            sunset: Label::new(None, Some(gio::ThemedIcon::new("daytime-sunset-symbolic"))),
+            moonrise: Label::new(None, Some(gio::ThemedIcon::new("moon-outline-symbolic"))),
+            moonset: Label::new(None, Some(gio::ThemedIcon::new("moon-outline-symbolic"))),
+        }
+    }
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for TransitCardPrivate {
+    const NAME: &'static str = "TransitCard";
+    type Type = TransitCard;
+    type ParentType = gtk::Grid;
+}
+
+impl ObjectImpl for TransitCardPrivate {}
+impl WidgetImpl for TransitCardPrivate {}
+impl GridImpl for TransitCardPrivate {}
+
+glib::wrapper! {
+    pub struct TransitCard(ObjectSubclass<TransitCardPrivate>) @extends gtk::Grid, gtk::Widget;
+}
+
+impl Default for TransitCard {
+    fn default() -> Self {
+        let s: Self = Object::builder().build();
+        s.add_css_class("card");
+        s.set_column_homogeneous(true);
+
+        s.attach(&s.imp().sunrise, 0, 0, 1, 1);
+        s.attach(&s.imp().sunset, 0, 1, 1, 1);
+        s.attach(&s.imp().moonrise, 1, 0, 1, 1);
+        s.attach(&s.imp().moonset, 1, 1, 1, 1);
+
+        s
+    }
+}
+
+impl TransitCard {
+    pub fn update_transit(&self, transit_info: &SunMoon) {
+        self.imp()
+            .sunrise
+            .set_text(format!("{}", transit_info.sunrise.format("%H:%M")).as_ref());
+        self.imp()
+            .sunset
+            .set_text(format!("{}", transit_info.sunset.format("%H:%M")).as_ref());
+        self.imp().moonrise.set_text(
+            &transit_info
+                .moonrise
+                .map(|time| format!("{}", time.format("%H:%M")))
+                .unwrap_or("".to_owned()),
+        );
+        self.imp().moonset.set_text(
+            &transit_info
+                .moonset
+                .map(|time| format!("{}", time.format("%H:%M")))
+                .unwrap_or("".to_owned()),
+        );
+    }
+}

dashboard/src/components/transit_clock.rs

@@ -0,0 +1,103 @@
+use crate::{
+    drawing::{Color, PieChart, Wedge},
+    soluna_client::SunMoon,
+};
+use chrono::{Duration, NaiveTime};
+use glib::Object;
+use gtk::{prelude::*, subclass::prelude::*};
+use std::{cell::RefCell, f64::consts::PI, rc::Rc};
+
+#[derive(Default)]
+pub struct TransitClockPrivate {
+    info: Rc<RefCell<Option<SunMoon>>>,
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for TransitClockPrivate {
+    const NAME: &'static str = "TransitClock";
+    type Type = TransitClock;
+    type ParentType = gtk::DrawingArea;
+}
+
+impl ObjectImpl for TransitClockPrivate {}
+impl WidgetImpl for TransitClockPrivate {}
+impl DrawingAreaImpl for TransitClockPrivate {}
+
+glib::wrapper! {
+    pub struct TransitClock(ObjectSubclass<TransitClockPrivate>) @extends gtk::DrawingArea, gtk::Widget;
+}
+
+impl Default for TransitClock {
+    fn default() -> Self {
+        let s: Self = Object::builder().build();
+        s.set_width_request(500);
+        s.set_height_request(500);
+
+        s.set_draw_func({
+            let s = s.clone();
+            move |_, context, width, height| {
+                let style_context = WidgetExt::style_context(&s);
+                let center_x = width as f64 / 2.;
+                let center_y = height as f64 / 2.;
+                let radius = width.min(height) as f64 / 2. * 0.9;
+                if let Some(ref info) = *s.imp().info.borrow() {
+                    let full_day = Duration::days(1).num_seconds() as f64;
+                    let sunrise = info.sunrise - NaiveTime::from_hms_opt(0, 0, 0).unwrap();
+                    let sunset = info.sunset - NaiveTime::from_hms_opt(0, 0, 0).unwrap();
+
+                    let night_color = style_context.lookup_color("dark_5").unwrap();
+                    let day_color = style_context.lookup_color("blue_1").unwrap();
+
+                    PieChart::new(&style_context)
+                        .center(center_x, center_y)
+                        .radius(radius)
+                        .rotation(-PI / 2.)
+                        .wedges(
+                            vec![
+                                Wedge {
+                                    start_angle: (PI * 2.) * sunset.num_seconds() as f64 / full_day,
+                                    end_angle: (PI * 2.) * sunrise.num_seconds() as f64 / full_day,
+                                    color: Color {
+                                        r: night_color.red() as f64,
+                                        g: night_color.green() as f64,
+                                        b: night_color.blue() as f64,
+                                    },
+                                },
+                                Wedge {
+                                    start_angle: (PI * 2.) * sunrise.num_seconds() as f64
+                                        / full_day,
+                                    end_angle: (PI * 2.) * sunset.num_seconds() as f64 / full_day,
+                                    color: Color {
+                                        r: day_color.red() as f64,
+                                        g: day_color.green() as f64,
+                                        b: day_color.blue() as f64,
+                                    },
+                                },
+                            ]
+                            .into_iter(),
+                        )
+                        .draw(context);
+
+                    (0..24).for_each(|tick| {
+                        context.set_source_rgb(0., 0., 0.);
+                        context.translate(center_x, center_y);
+                        context.rotate(tick as f64 * (PI / 12.));
+                        context.move_to(radius - 5., 0.);
+                        context.line_to(radius - 10., 0.);
+                        let _ = context.stroke();
+                        context.identity_matrix();
+                    });
+                }
+            }
+        });
+
+        s
+    }
+}
+
+impl TransitClock {
+    pub fn update_transit(&self, transit_info: SunMoon) {
+        *self.imp().info.borrow_mut() = Some(transit_info);
+        self.queue_draw();
+    }
+}

dashboard/src/drawing/mod.rs

@@ -0,0 +1,2 @@
+mod pie_chart;
+pub use pie_chart::{Color, PieChart, Wedge};

dashboard/src/drawing/pie_chart.rs

@@ -0,0 +1,96 @@
+use cairo::Context;
+use gtk::{gdk::RGBA, prelude::*, StyleContext};
+use std::f64::consts::PI;
+
+#[derive(Clone, Debug)]
+pub struct Color {
+    pub r: f64,
+    pub g: f64,
+    pub b: f64,
+}
+
+#[derive(Clone, Debug)]
+pub struct Wedge {
+    pub start_angle: f64,
+    pub end_angle: f64,
+    pub color: Color,
+}
+
+pub struct PieChart {
+    rotation: f64,
+    wedges: Vec<Wedge>,
+    center_x: f64,
+    center_y: f64,
+    radius: f64,
+
+    border_color: RGBA,
+}
+
+impl PieChart {
+    pub fn new(style_context: &StyleContext) -> Self {
+        Self {
+            rotation: 0.,
+            wedges: vec![],
+            center_x: 0.,
+            center_y: 0.,
+            radius: 0.,
+            border_color: style_context.lookup_color("theme_fg_color").unwrap(),
+        }
+    }
+
+    pub fn rotation(mut self, rotation: f64) -> Self {
+        self.rotation = rotation;
+        self
+    }
+
+    pub fn wedges(mut self, wedge: impl Iterator<Item = Wedge>) -> Self {
+        let mut wedges: Vec<Wedge> = wedge.collect();
+        self.wedges.append(&mut wedges);
+        self
+    }
+
+    pub fn center(mut self, center_x: f64, center_y: f64) -> Self {
+        self.center_x = center_x;
+        self.center_y = center_y;
+        self
+    }
+
+    pub fn radius(mut self, radius: f64) -> Self {
+        self.radius = radius;
+        self
+    }
+
+    pub fn draw(self, context: &Context) {
+        context.set_source_rgba(0., 0., 0., 0.);
+        let _ = context.paint();
+
+        context.set_line_width(2.);
+
+        self.wedges.iter().for_each(
+            |Wedge {
+                 start_angle,
+                 end_angle,
+                 color,
+             }| {
+                context.move_to(self.center_x, self.center_y);
+                context.set_source_rgb(color.r, color.g, color.b);
+                context.arc(
+                    self.center_x,
+                    self.center_y,
+                    self.radius,
+                    start_angle + self.rotation,
+                    end_angle + self.rotation,
+                );
+                let _ = context.fill();
+            },
+        );
+
+        context.set_source_rgb(
+            self.border_color.red() as f64,
+            self.border_color.green() as f64,
+            self.border_color.blue() as f64,
+        );
+        context.arc(self.center_x, self.center_y, self.radius, 0., 2. * PI);
+        let _ = context.stroke();
+    }
+}

dashboard/src/main.rs

@@ -0,0 +1,143 @@
+use std::{
+    env,
+    sync::{Arc, RwLock},
+};
+
+use async_std::channel::Sender;
+use chrono::{Datelike, Local, Utc};
+use geo_types::{Latitude, Longitude};
+use gtk::prelude::*;
+
+mod app_window;
+use app_window::ApplicationWindow;
+
+mod components;
+
+mod drawing;
+
+mod soluna_client;
+use soluna_client::SolunaClient;
+
+mod solstices;
+use solstices::EVENTS;
+
+mod types;
+use types::State;
+
+/*
+const EO_TEXT: &'static str = "
+day = {$day ->
+    *[Sunday] Dimanĉo
+    [Monday] Lundo
+    [Tuesday] Mardo
+    [Wednesday] Merkredo
+    [Thursday] Ĵaŭdo
+    [Friday] Vendredo
+    [Saturday] Sabato
+    [LeapDay] Leap Day
+    [YearDay] Year Day
+}
+month = {$month ->
+    *[January] Januaro
+    [February] Februaro
+    [March] Marto
+    [April] Aprilo
+    [May] Mayo
+    [June] Junio
+    [Sol] Solo
+    [July] Julio
+    [August] Aŭgusto
+    [September] Septembro
+    [October] Oktobro
+    [November] Novembro
+    [December] Decembro
+}
+spring_equinox = Printempa Ekvinokso
+summer_solstice = Somera Solstico
+autumn_equinox = Aŭtuna Ekvinokso
+winter_solstice = Vintra Solstico
+";
+*/
+
+#[derive(Clone, Debug)]
+pub enum Message {
+    Refresh(State),
+}
+
+#[derive(Clone)]
+pub struct Core {
+    tx: Arc<RwLock<Option<Sender<Message>>>>,
+}
+
+pub fn main() {
+    gio::resources_register_include!("com.luminescent-dreams.dashboard.gresource")
+        .expect("Failed to register resources");
+
+    let app = adw::Application::builder()
+        .application_id("com.luminescent-dreams.dashboard")
+        .resource_base_path("/com/luminescent-dreams/dashboard")
+        .build();
+
+    let latitude = Latitude::from(41.78);
+    let longitude = Longitude::from(-71.41);
+
+    let runtime = tokio::runtime::Builder::new_multi_thread()
+        .enable_all()
+        .build()
+        .unwrap();
+
+    let core = Core {
+        tx: Arc::new(RwLock::new(None)),
+    };
+
+    runtime.spawn({
+        let core = core.clone();
+        async move {
+            let soluna_client = SolunaClient::new();
+
+            loop {
+                let transit = soluna_client
+                    .request(latitude.clone(), longitude.clone(), Local::now())
+                    .await;
+
+                let now = Local::now();
+                let state = State {
+                    date: now.date_naive(),
+                    next_event: EVENTS.next_event(now.with_timezone(&Utc)).unwrap(),
+                    events: EVENTS.yearly_events(now.year()).unwrap(),
+                    transit: Some(transit),
+                };
+
+                let gtk_tx = core.tx.read().unwrap().clone();
+
+                if let Some(gtk_tx) = gtk_tx {
+                    let state = state.clone();
+                    let _ = gtk_tx.send(Message::Refresh(state)).await;
+                    std::thread::sleep(std::time::Duration::from_secs(60));
+                } else {
+                    std::thread::sleep(std::time::Duration::from_secs(1));
+                }
+            }
+        }
+    });
+
+    app.connect_activate(move |app| {
+        let (gtk_tx, gtk_rx) = async_std::channel::unbounded();
+
+        *core.tx.write().unwrap() = Some(gtk_tx);
+
+        let window = ApplicationWindow::new(app);
+        window.window.present();
+
+        glib::spawn_future_local(async move {
+            loop {
+                let Message::Refresh(state) = gtk_rx.recv().await.unwrap();
+                window.update_state(state);
+            }
+        });
+    });
+
+    let args: Vec<String> = env::args().collect();
+    ApplicationExtManual::run_with_args(&app, &args);
+    runtime.shutdown_background();
+}

dashboard/src/moon.rs

@@ -0,0 +1,14 @@
+use svg::{
+    node::element::{Circle, Image},
+    Document,
+};
+
+pub fn moon() -> Document {
+    /*
+    svg(width="100%", height="100%", xmlns="http://www.w3.org/2000/svg") {
+        circle(cx="50", cy="50", r="50", stroke="green", fill="none");
+    }
+    */
+    let img = Image::new().set("href", "/moon-small.png");
+    Document::new().add(img)
+}

dashboard/src/solstices.rs

@@ -0,0 +1,202 @@
+use std::collections::HashMap;
+
+use chrono::prelude::*;
+use lazy_static::lazy_static;
+use serde::{Deserialize, Serialize};
+
+// http://astropixels.com/ephemeris/soleq2001.html
+const SOLSTICE_TEXT: &str = "
+ 2001      Mar 20  13:31     Jun 21  07:38     Sep 22  23:05     Dec 21  19:22
+ 2002      Mar 20  19:16     Jun 21  13:25     Sep 23  04:56     Dec 22  01:15
+ 2003      Mar 21  01:00     Jun 21  19:11     Sep 23  10:47     Dec 22  07:04
+ 2004      Mar 20  06:49     Jun 21  00:57     Sep 22  16:30     Dec 21  12:42
+ 2005      Mar 20  12:34     Jun 21  06:46     Sep 22  22:23     Dec 21  18:35
+ 2006      Mar 20  18:25     Jun 21  12:26     Sep 23  04:04     Dec 22  00:22
+ 2007      Mar 21  00:07     Jun 21  18:06     Sep 23  09:51     Dec 22  06:08
+ 2008      Mar 20  05:49     Jun 21  00:00     Sep 22  15:45     Dec 21  12:04
+ 2009      Mar 20  11:44     Jun 21  05:45     Sep 22  21:18     Dec 21  17:47
+ 2010      Mar 20  17:32     Jun 21  11:28     Sep 23  03:09     Dec 21  23:38
+
+ 2011      Mar 20  23:21     Jun 21  17:16     Sep 23  09:05     Dec 22  05:30
+ 2012      Mar 20  05:15     Jun 20  23:08     Sep 22  14:49     Dec 21  11:12
+ 2013      Mar 20  11:02     Jun 21  05:04     Sep 22  20:44     Dec 21  17:11
+ 2014      Mar 20  16:57     Jun 21  10:52     Sep 23  02:30     Dec 21  23:03
+ 2015      Mar 20  22:45     Jun 21  16:38     Sep 23  08:20     Dec 22  04:48
+ 2016      Mar 20  04:31     Jun 20  22:35     Sep 22  14:21     Dec 21  10:45
+ 2017      Mar 20  10:29     Jun 21  04:25     Sep 22  20:02     Dec 21  16:29
+ 2018      Mar 20  16:15     Jun 21  10:07     Sep 23  01:54     Dec 21  22:22
+ 2019      Mar 20  21:58     Jun 21  15:54     Sep 23  07:50     Dec 22  04:19
+ 2020      Mar 20  03:50     Jun 20  21:43     Sep 22  13:31     Dec 21  10:03
+
+ 2021      Mar 20  09:37     Jun 21  03:32     Sep 22  19:21     Dec 21  15:59
+ 2022      Mar 20  15:33     Jun 21  09:14     Sep 23  01:04     Dec 21  21:48
+ 2023      Mar 20  21:25     Jun 21  14:58     Sep 23  06:50     Dec 22  03:28
+ 2024      Mar 20  03:07     Jun 20  20:51     Sep 22  12:44     Dec 21  09:20
+ 2025      Mar 20  09:02     Jun 21  02:42     Sep 22  18:20     Dec 21  15:03
+ 2026      Mar 20  14:46     Jun 21  08:25     Sep 23  00:06     Dec 21  20:50
+ 2027      Mar 20  20:25     Jun 21  14:11     Sep 23  06:02     Dec 22  02:43
+ 2028      Mar 20  02:17     Jun 20  20:02     Sep 22  11:45     Dec 21  08:20
+ 2029      Mar 20  08:01     Jun 21  01:48     Sep 22  17:37     Dec 21  14:14
+ 2030      Mar 20  13:51     Jun 21  07:31     Sep 22  23:27     Dec 21  20:09
+
+ 2031      Mar 20  19:41     Jun 21  13:17     Sep 23  05:15     Dec 22  01:56
+ 2032      Mar 20  01:23     Jun 20  19:09     Sep 22  11:11     Dec 21  07:57
+ 2033      Mar 20  07:23     Jun 21  01:01     Sep 22  16:52     Dec 21  13:45
+ 2034      Mar 20  13:18     Jun 21  06:45     Sep 22  22:41     Dec 21  19:35
+ 2035      Mar 20  19:03     Jun 21  12:33     Sep 23  04:39     Dec 22  01:31
+ 2036      Mar 20  01:02     Jun 20  18:31     Sep 22  10:23     Dec 21  07:12
+ 2037      Mar 20  06:50     Jun 21  00:22     Sep 22  16:13     Dec 21  13:08
+ 2038      Mar 20  12:40     Jun 21  06:09     Sep 22  22:02     Dec 21  19:01
+ 2039      Mar 20  18:32     Jun 21  11:58     Sep 23  03:50     Dec 22  00:41
+ 2040      Mar 20  00:11     Jun 20  17:46     Sep 22  09:44     Dec 21  06:33
+
+ 2041      Mar 20  06:07     Jun 20  23:37     Sep 22  15:27     Dec 21  12:19
+ 2042      Mar 20  11:53     Jun 21  05:16     Sep 22  21:11     Dec 21  18:04
+ 2043      Mar 20  17:29     Jun 21  10:59     Sep 23  03:07     Dec 22  00:02
+ 2044      Mar 19  23:20     Jun 20  16:50     Sep 22  08:47     Dec 21  05:43
+ 2045      Mar 20  05:08     Jun 20  22:34     Sep 22  14:33     Dec 21  11:36
+ 2046      Mar 20  10:58     Jun 21  04:15     Sep 22  20:22     Dec 21  17:28
+ 2047      Mar 20  16:52     Jun 21  10:02     Sep 23  02:07     Dec 21  23:07
+ 2048      Mar 19  22:34     Jun 20  15:54     Sep 22  08:01     Dec 21  05:02
+ 2049      Mar 20  04:28     Jun 20  21:47     Sep 22  13:42     Dec 21  10:51
+ 2050      Mar 20  10:20     Jun 21  03:33     Sep 22  19:29     Dec 21  16:39
+";
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+pub struct YearlyEvents {
+    pub year: i32,
+    pub spring_equinox: chrono::DateTime<chrono::Utc>,
+    pub summer_solstice: chrono::DateTime<chrono::Utc>,
+    pub autumn_equinox: chrono::DateTime<chrono::Utc>,
+    pub winter_solstice: chrono::DateTime<chrono::Utc>,
+}
+
+#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+pub enum Event {
+    SpringEquinox(chrono::DateTime<chrono::Utc>),
+    SummerSolstice(chrono::DateTime<chrono::Utc>),
+    AutumnEquinox(chrono::DateTime<chrono::Utc>),
+    WinterSolstice(chrono::DateTime<chrono::Utc>),
+}
+
+impl Event {
+    pub fn date(&self) -> chrono::DateTime<chrono::Utc> {
+        match *self {
+            Event::SpringEquinox(d) => d,
+            Event::SummerSolstice(d) => d,
+            Event::AutumnEquinox(d) => d,
+            Event::WinterSolstice(d) => d,
+        }
+    }
+}
+
+fn parse_time<'a>(
+    year: &str,
+    iter: impl Iterator<Item = &'a str>,
+) -> chrono::DateTime<chrono::Utc> {
+    let parts = iter.collect::<Vec<&str>>();
+    let p = format!("{} {} {} {}", year, parts[0], parts[1], parts[2]);
+    NaiveDateTime::parse_from_str(&p, "%Y %b %d %H:%M")
+        .unwrap()
+        .and_utc()
+}
+
+fn parse_line(year: &str, rest: &[&str]) -> YearlyEvents {
+    let spring = parse_time(year, rest.iter().take(3).cloned());
+    let summer = parse_time(year, rest.iter().skip(3).take(3).cloned());
+    let autumn = parse_time(year, rest.iter().skip(6).take(3).cloned());
+    let winter = parse_time(year, rest.iter().skip(9).take(3).cloned());
+    YearlyEvents {
+        year: year.parse::<i32>().unwrap(),
+        spring_equinox: spring,
+        summer_solstice: summer,
+        autumn_equinox: autumn,
+        winter_solstice: winter,
+    }
+}
+
+fn parse_events() -> Vec<Option<YearlyEvents>> {
+    SOLSTICE_TEXT
+        .lines()
+        .map(|line| {
+            match line
+                .split(' ')
+                .filter(|elem| !elem.is_empty())
+                .collect::<Vec<&str>>()
+                .as_slice()
+            {
+                [year, rest @ ..] => Some(parse_line(year, rest)),
+                _ => None,
+            }
+        })
+        .collect()
+}
+
+pub struct Solstices(HashMap<i32, YearlyEvents>);
+
+impl Solstices {
+    pub fn yearly_events(&self, year: i32) -> Option<YearlyEvents> {
+        self.0.get(&year).copied()
+    }
+
+    pub fn next_event(&self, date: chrono::DateTime<chrono::Utc>) -> Option<Event> {
+        let year_events = self.0.get(&date.year());
+        match year_events {
+            Some(year_events) => {
+                if date <= year_events.spring_equinox {
+                    Some(Event::SpringEquinox(year_events.spring_equinox))
+                } else if date <= year_events.summer_solstice {
+                    Some(Event::SummerSolstice(year_events.summer_solstice))
+                } else if date <= year_events.autumn_equinox {
+                    Some(Event::AutumnEquinox(year_events.autumn_equinox))
+                } else if date <= year_events.winter_solstice {
+                    Some(Event::WinterSolstice(year_events.winter_solstice))
+                } else {
+                    self.0
+                        .get(&(date.year() + 1))
+                        .map(|_| Event::SpringEquinox(year_events.spring_equinox))
+                }
+            }
+            None => None,
+        }
+    }
+}
+
+impl From<Vec<Option<YearlyEvents>>> for Solstices {
+    fn from(event_list: Vec<Option<YearlyEvents>>) -> Self {
+        Solstices(event_list.iter().fold(HashMap::new(), |mut m, record| {
+            match record {
+                Some(record) => {
+                    m.insert(record.year, *record);
+                }
+                None => (),
+            }
+            m
+        }))
+    }
+}
+
+lazy_static! {
+    pub static ref EVENTS: Solstices = Solstices::from(parse_events());
+}
+
+#[cfg(test)]
+mod test {
+    use chrono::{NaiveDate, NaiveDateTime};
+
+    #[test]
+    fn it_can_parse_a_solstice_time() {
+        let p = "2001 Mar 20 13:31".to_owned();
+        let parsed_date = NaiveDateTime::parse_from_str(&p, "%Y %b %d %H:%M")
+            .unwrap()
+            .and_utc();
+        assert_eq!(
+            parsed_date,
+            NaiveDate::from_ymd_opt(2001, 03, 20)
+                .unwrap()
+                .and_hms_opt(13, 31, 0)
+                .unwrap()
+                .and_utc()
+        );
+    }
+}

dashboard/src/soluna_client.rs

@@ -0,0 +1,154 @@
+// 41.78, -71.41
+// https://api.solunar.org/solunar/41.78,-71.41,20211029,-4
+
+use chrono::{DateTime, Duration, Local, NaiveTime, Offset, TimeZone, Timelike, Utc};
+use geo_types::{Latitude, Longitude};
+use memorycache::MemoryCache;
+use serde::Deserialize;
+
+const ENDPOINT: &str = "https://api.solunar.org/solunar";
+
+#[derive(Clone, Debug, PartialEq)]
+pub struct SunMoon {
+    pub sunrise: NaiveTime,
+    pub sunset: NaiveTime,
+    pub moonrise: Option<NaiveTime>,
+    pub moonset: Option<NaiveTime>,
+    pub moon_phase: LunarPhase,
+}
+
+impl SunMoon {
+    fn from_js(val: SunMoonJs) -> Self {
+        fn parse_time(val: String) -> Option<NaiveTime> {
+            NaiveTime::parse_from_str(&val, "%H:%M").ok()
+        }
+
+        let sunrise = parse_time(val.sunrise).unwrap();
+        let sunset = parse_time(val.sunset).unwrap();
+        let moonrise = val.moonrise.and_then(parse_time);
+        let moonset = val.moonset.and_then(parse_time);
+
+        Self {
+            sunrise,
+            sunset,
+            moonrise,
+            moonset,
+            moon_phase: val.moon_phase,
+        }
+    }
+}
+
+#[derive(Clone, Debug, Deserialize)]
+pub(crate) struct SunMoonJs {
+    #[serde(alias = "sunRise")]
+    sunrise: String,
+    #[serde(alias = "sunSet")]
+    sunset: String,
+    #[serde(alias = "moonRise")]
+    moonrise: Option<String>,
+    #[serde(alias = "moonSet")]
+    moonset: Option<String>,
+    #[serde(alias = "moonPhase")]
+    moon_phase: LunarPhase,
+}
+
+#[derive(Clone, Debug, Deserialize, PartialEq)]
+pub enum LunarPhase {
+    #[serde(alias = "New Moon")]
+    NewMoon,
+    #[serde(alias = "Waxing Crescent")]
+    WaxingCrescent,
+    #[serde(alias = "First Quarter")]
+    FirstQuarter,
+    #[serde(alias = "Waxing Gibbous")]
+    WaxingGibbous,
+    #[serde(alias = "Full Moon")]
+    FullMoon,
+    #[serde(alias = "Waning Gibbous")]
+    WaningGibbous,
+    #[serde(alias = "Last Quarter")]
+    LastQuarter,
+    #[serde(alias = "Waning Crescent")]
+    WaningCrescent,
+}
+
+pub struct SolunaClient {
+    client: reqwest::Client,
+    memory_cache: MemoryCache<SunMoonJs>,
+}
+
+impl SolunaClient {
+    pub fn new() -> Self {
+        Self {
+            client: reqwest::Client::new(),
+            memory_cache: MemoryCache::default(),
+        }
+    }
+
+    pub async fn request<Tz: TimeZone>(
+        &self,
+        latitude: Latitude,
+        longitude: Longitude,
+        day: DateTime<Tz>,
+    ) -> SunMoon {
+        let date = day.date_naive().format("%Y%m%d");
+        let url = format!(
+            "{}/{},{},{},{}",
+            ENDPOINT,
+            latitude,
+            longitude,
+            date,
+            day.offset().fix().local_minus_utc() / 3600
+        );
+        let js = self
+            .memory_cache
+            .find(&url, async {
+                let response = self.client.get(&url).send().await.unwrap();
+                let expiration = response
+                    .headers()
+                    .get(reqwest::header::EXPIRES)
+                    .and_then(|header| header.to_str().ok())
+                    .and_then(|expiration| DateTime::parse_from_rfc2822(expiration).ok())
+                    .map(DateTime::<Utc>::from)
+                    .unwrap_or(
+                        Local::now()
+                            .with_hour(0)
+                            .and_then(|dt| dt.with_minute(0))
+                            .and_then(|dt| dt.with_second(0))
+                            .and_then(|dt| dt.with_nanosecond(0))
+                            .map(|dt| dt.with_timezone(&Utc))
+                            .unwrap()
+                            + Duration::days(1),
+                    );
+                let soluna: SunMoonJs = response.json().await.unwrap();
+                (expiration, soluna)
+            })
+            .await;
+
+        SunMoon::from_js(js)
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use serde_json;
+
+    const EXAMPLE: &str = "{\"sunRise\":\"7:15\",\"sunTransit\":\"12:30\",\"sunSet\":\"17:45\",\"moonRise\":null,\"moonTransit\":\"7:30\",\"moonUnder\":\"19:54\",\"moonSet\":\"15:02\",\"moonPhase\":\"Waning Crescent\",\"moonIllumination\":0.35889454647387764,\"sunRiseDec\":7.25,\"sunTransitDec\":12.5,\"sunSetDec\":17.75,\"moonRiseDec\":null,\"moonSetDec\":15.033333333333333,\"moonTransitDec\":7.5,\"moonUnderDec\":19.9,\"minor1Start\":null,\"minor1Stop\":null,\"minor2StartDec\":14.533333333333333,\"minor2Start\":\"14:32\",\"minor2StopDec\":15.533333333333333,\"minor2Stop\":\"15:32\",\"major1StartDec\":6.5,\"major1Start\":\"06:30\",\"major1StopDec\":8.5,\"major1Stop\":\"08:30\",\"major2StartDec\":18.9,\"major2Start\":\"18:54\",\"major2StopDec\":20.9,\"major2Stop\":\"20:54\",\"dayRating\":1,\"hourlyRating\":{\"0\":20,\"1\":20,\"2\":0,\"3\":0,\"4\":0,\"5\":0,\"6\":20,\"7\":40,\"8\":40,\"9\":20,\"10\":0,\"11\":0,\"12\":0,\"13\":0,\"14\":0,\"15\":20,\"16\":20,\"17\":20,\"18\":40,\"19\":20,\"20\":20,\"21\":20,\"22\":0,\"23\":0}}";
+
+    #[test]
+    fn it_parses_a_response() {
+        let sun_moon_js: SunMoonJs = serde_json::from_str(EXAMPLE).unwrap();
+        let sun_moon = SunMoon::from_js(sun_moon_js);
+        assert_eq!(
+            sun_moon,
+            SunMoon {
+                sunrise: NaiveTime::from_hms_opt(7, 15, 0).unwrap(),
+                sunset: NaiveTime::from_hms_opt(17, 45, 0).unwrap(),
+                moonrise: None,
+                moonset: Some(NaiveTime::from_hms_opt(15, 02, 0).unwrap()),
+                moon_phase: LunarPhase::WaningCrescent,
+            }
+        );
+    }
+}

dashboard/src/types.rs

@@ -0,0 +1,13 @@
+use crate::{
+    solstices::{Event, YearlyEvents},
+    soluna_client::SunMoon,
+};
+use chrono::NaiveDate;
+
+#[derive(Clone, Debug)]
+pub struct State {
+    pub date: NaiveDate,
+    pub next_event: Event,
+    pub events: YearlyEvents,
+    pub transit: Option<SunMoon>,
+}

emseries/Cargo.lock

@@ -36,9 +36,9 @@ dependencies = [
 
 [[package]]
 name = "chrono-tz"
-version = "0.6.1"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "58549f1842da3080ce63002102d5bc954c7bc843d4f47818e642abdc36253552"
+checksum = "cf9cc2b23599e6d7479755f3594285efb3f74a1bdca7a7374948bc831e23a552"
 dependencies = [
  "chrono",
  "chrono-tz-build",
@@ -48,9 +48,9 @@ dependencies = [
 
 [[package]]
 name = "chrono-tz-build"
-version = "0.0.2"
+version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db058d493fb2f65f41861bfed7e3fe6335264a9f0f92710cab5bdf01fef09069"
+checksum = "d9998fb9f7e9b2111641485bf8beb32f92945f97f92a3d061f744cfef335f751"
 dependencies = [
  "parse-zoneinfo",
  "phf",
@@ -71,7 +71,7 @@ dependencies = [
 
 [[package]]
 name = "emseries"
-version = "0.5.1"
+version = "0.6.0"
 dependencies = [
  "chrono",
  "chrono-tz",
@@ -82,7 +82,6 @@ dependencies = [
  "tempfile",
  "thiserror",
  "uuid",
- "yaml-rust",
 ]
 
 [[package]]
@@ -135,12 +134,6 @@ version = "0.2.124"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "21a41fed9d98f27ab1c6d161da622a4fa35e8a54a8adc24bbf3ddd0ef70b0e50"
 
-[[package]]
-name = "linked-hash-map"
-version = "0.5.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fb9b38af92608140b86b693604b9ffcc5824240a484d1ecd4795bacb2fe88f3"
-
 [[package]]
 name = "num-integer"
 version = "0.1.44"
@@ -171,18 +164,18 @@ dependencies = [
 
 [[package]]
 name = "phf"
-version = "0.10.1"
+version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fabbf1ead8a5bcbc20f5f8b939ee3f5b0f6f281b6ad3468b84656b658b455259"
+checksum = "928c6535de93548188ef63bb7c4036bd415cd8f36ad25af44b9789b2ee72a48c"
 dependencies = [
  "phf_shared",
 ]
 
 [[package]]
 name = "phf_codegen"
-version = "0.10.0"
+version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fb1c3a8bc4dd4e5cfce29b44ffc14bedd2ee294559a294e2a4d4c9e9a6a13cd"
+checksum = "a56ac890c5e3ca598bbdeaa99964edb5b0258a583a9eb6ef4e89fc85d9224770"
 dependencies = [
  "phf_generator",
  "phf_shared",
@@ -190,9 +183,9 @@ dependencies = [
 
 [[package]]
 name = "phf_generator"
-version = "0.10.0"
+version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d5285893bb5eb82e6aaf5d59ee909a06a16737a8970984dd7746ba9283498d6"
+checksum = "b1181c94580fa345f50f19d738aaa39c0ed30a600d95cb2d3e23f94266f14fbf"
 dependencies = [
  "phf_shared",
  "rand",
@@ -200,20 +193,13 @@ dependencies = [
 
 [[package]]
 name = "phf_shared"
-version = "0.10.0"
+version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6796ad771acdc0123d2a88dc428b5e38ef24456743ddb1744ed628f9815c096"
+checksum = "e1fb5f6f826b772a8d4c0394209441e7d37cbbb967ae9c7e0e8134365c9ee676"
 dependencies = [
  "siphasher",
- "uncased",
 ]
 
-[[package]]
-name = "ppv-lite86"
-version = "0.2.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb9f9e6e233e5c4a35559a617bf40a4ec447db2e84c20b55a6f83167b7e57872"
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.37"
@@ -238,18 +224,6 @@ version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
 dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
-dependencies = [
- "ppv-lite86",
  "rand_core",
 ]
 
@@ -258,9 +232,6 @@ name = "rand_core"
 version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
-dependencies = [
- "getrandom",
-]
 
 [[package]]
 name = "redox_syscall"
@@ -392,18 +363,9 @@ dependencies = [
 
 [[package]]
 name = "typenum"
-version = "1.15.0"
+version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
-
-[[package]]
-name = "uncased"
-version = "0.9.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5baeed7327e25054889b9bd4f975f32e5f4c5d434042d59ab6cd4142c0a76ed0"
-dependencies = [
- "version_check",
-]
+checksum = "497961ef93d974e23eb6f433eb5fe1b7930b659f06d12dec6fc44a8f554c0bba"
 
 [[package]]
 name = "unicode-xid"
@@ -421,12 +383,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "version_check"
-version = "0.9.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
-
 [[package]]
 name = "wasi"
 version = "0.10.2+wasi-snapshot-preview1"
@@ -454,12 +410,3 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
-
-[[package]]
-name = "yaml-rust"
-version = "0.4.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "56c1936c4cc7a1c9ab21a1ebb602eb942ba868cbd44a99cb7cdc5892335e1c85"
-dependencies = [
- "linked-hash-map",
-]

emseries/Cargo.toml

@@ -1,10 +1,10 @@
 [package]
 name = "emseries"
-version = "0.5.1"
+version = "0.6.0"
 authors = ["Savanni D'Gerinel <savanni@luminescent-dreams.com>"]
 description = "an Embedded Time Series database"
 license = "GPL-3.0-only"
-license-file = "../COPYING"
+# license-file = "../COPYING"
 documentation = "https://docs.rs/emseries"
 homepage = "https://github.com/luminescent-dreams/emseries"
 repository = "https://github.com/luminescent-dreams/emseries"
@@ -18,14 +18,13 @@ include = [
 
 [dependencies]
 chrono = { version = "0.4", features = ["serde"] }
-chrono-tz = { version = "0.6", features = ["serde"] }
-dimensioned = { version = "0.7", features = ["serde"] }
+chrono-tz = { version = "0.8", features = ["serde"] }
 serde = "1"
 serde_derive = "1"
 serde_json = "1.0"
 thiserror = "1.0"
 uuid = { version = "0.8", features = ["v4", "serde"] }
-yaml-rust = "0.4"
 
 [dev-dependencies]
 tempfile = "3.1"
+dimensioned = { version = "0.7", features = ["serde"] }

emseries/Makefile

@@ -1,9 +0,0 @@
-
-dev:
-	cargo watch -x build
-
-test:
-	cargo watch -x test
-
-test-once:
-	cargo test

emseries/fixtures/weight.json

@@ -1,2 +0,0 @@
-{"data":{"weight":77.79109,"date":"2003-11-10T06:00:00.000000000000Z"},"id":"3330c5b0-783f-4919-b2c4-8169c38f65ff"}
-{"data":{"weight":77.56429,"date":"2003-11-11T06:00:00.000000000000Z"},"id":"54c10502-030e-43d2-9ca6-df2f9a5a5ddf"}

emseries/src/criteria.rs

@@ -10,8 +10,7 @@ Luminescent Dreams Tools is distributed in the hope that it will be useful, but
 You should have received a copy of the GNU General Public License along with Lumeto. If not, see <https://www.gnu.org/licenses/>.
 */
 
-use date_time_tz::DateTimeTz;
-use types::Recordable;
+use types::{Recordable, Timestamp};
 
 /// This trait is used for constructing queries for searching the database.
 pub trait Criteria {
@@ -45,7 +44,7 @@ pub struct Or<A: Criteria, B: Criteria> {
 /// Specify the starting time for a search. This consists of a UTC timestamp and a specifier as to
 /// whether the exact time is included in the search criteria.
 pub struct StartTime {
-    pub time: DateTimeTz,
+    pub time: Timestamp,
     pub incl: bool,
 }
 
@@ -62,7 +61,7 @@ impl Criteria for StartTime {
 /// Specify the ending time for a search. This consists of a UTC timestamp and a specifier as to
 /// whether the exact time is included in the search criteria.
 pub struct EndTime {
-    pub time: DateTimeTz,
+    pub time: Timestamp,
     pub incl: bool,
 }
 
@@ -89,7 +88,7 @@ impl Criteria for Tags {
 }
 
 /// Specify a criteria that searches for records matching an exact time.
-pub fn exact_time(time: DateTimeTz) -> And<StartTime, EndTime> {
+pub fn exact_time(time: Timestamp) -> And<StartTime, EndTime> {
     And {
         lside: StartTime {
             time: time.clone(),
@@ -101,9 +100,9 @@ pub fn exact_time(time: DateTimeTz) -> And<StartTime, EndTime> {
 
 /// Specify a criteria that searches for all records within a time range.
 pub fn time_range(
-    start: DateTimeTz,
+    start: Timestamp,
     start_incl: bool,
-    end: DateTimeTz,
+    end: Timestamp,
     end_incl: bool,
 ) -> And<StartTime, EndTime> {
     And {

emseries/src/date_time_tz.rs

@@ -1,166 +0,0 @@
-/*
-Copyright 2020-2023, Savanni D'Gerinel <savanni@luminescent-dreams.com>
-
-This file is part of the Luminescent Dreams Tools.
-
-Luminescent Dreams Tools is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
-
-Luminescent Dreams Tools is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License along with Lumeto. If not, see <https://www.gnu.org/licenses/>.
-*/
-
-extern crate chrono;
-extern crate chrono_tz;
-
-use chrono::SecondsFormat;
-use chrono_tz::Etc::UTC;
-use serde::de::{self, Deserialize, Deserializer, Visitor};
-use serde::ser::{Serialize, Serializer};
-use std::fmt;
-
-/// This is a wrapper around date time objects, using timezones from the chroon-tz database and
-/// providing string representation and parsing of the form "<RFC3339> <Timezone Name>", i.e.,
-/// "2019-05-15T14:30:00Z US/Central". The to_string method, and serde serialization will
-/// produce a string of this format. The parser will accept an RFC3339-only string of the forms
-/// "2019-05-15T14:30:00Z", "2019-05-15T14:30:00+00:00", and also an "RFC3339 Timezone Name"
-/// string.
-///
-/// The function here is to generate as close to unambiguous time/date strings, (for earth's
-/// gravitational frame of reference), as possible. Clumping together the time, offset from UTC,
-/// and the named time zone allows future parsers to know the exact interpretation of the time in
-/// the frame of reference of the original recording.
-#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
-pub struct DateTimeTz(pub chrono::DateTime<chrono_tz::Tz>);
-
-impl DateTimeTz {
-    pub fn map<F>(&self, f: F) -> DateTimeTz
-    where
-        F: FnOnce(chrono::DateTime<chrono_tz::Tz>) -> chrono::DateTime<chrono_tz::Tz>,
-    {
-        DateTimeTz(f(self.0))
-    }
-
-    pub fn to_string(&self) -> String {
-        if self.0.timezone() == UTC {
-            self.0.to_rfc3339_opts(SecondsFormat::Secs, true)
-        } else {
-            format!(
-                "{} {}",
-                self.0
-                    .with_timezone(&chrono_tz::Etc::UTC)
-                    .to_rfc3339_opts(SecondsFormat::Secs, true,),
-                self.0.timezone().name()
-            )
-        }
-    }
-
-    pub fn from_str(s: &str) -> Result<DateTimeTz, chrono::ParseError> {
-        let v: Vec<&str> = s.split_terminator(" ").collect();
-        if v.len() == 2 {
-            let tz = v[1].parse::<chrono_tz::Tz>().unwrap();
-            chrono::DateTime::parse_from_rfc3339(v[0]).map(|ts| DateTimeTz(ts.with_timezone(&tz)))
-        } else {
-            chrono::DateTime::parse_from_rfc3339(v[0]).map(|ts| DateTimeTz(ts.with_timezone(&UTC)))
-        }
-    }
-}
-
-struct DateTimeTzVisitor;
-
-impl<'de> Visitor<'de> for DateTimeTzVisitor {
-    type Value = DateTimeTz;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-        formatter.write_str("a string date time representation that can be parsed")
-    }
-
-    fn visit_str<E: de::Error>(self, s: &str) -> Result<Self::Value, E> {
-        DateTimeTz::from_str(s).or(Err(E::custom(format!(
-            "string is not a parsable datetime representation"
-        ))))
-    }
-}
-
-impl Serialize for DateTimeTz {
-    fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
-        serializer.serialize_str(&self.to_string())
-    }
-}
-
-impl<'de> Deserialize<'de> for DateTimeTz {
-    fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
-        deserializer.deserialize_str(DateTimeTzVisitor)
-    }
-}
-
-#[cfg(test)]
-mod test {
-    extern crate serde_json;
-
-    use chrono::TimeZone;
-    use chrono_tz::America::Phoenix;
-    use chrono_tz::Etc::UTC;
-    use chrono_tz::US::{Arizona, Central};
-    use date_time_tz::DateTimeTz;
-
-    #[test]
-    fn it_creates_timestamp_with_z() {
-        let t = DateTimeTz(UTC.ymd(2019, 5, 15).and_hms(12, 0, 0));
-        assert_eq!(t.to_string(), "2019-05-15T12:00:00Z");
-    }
-
-    #[test]
-    fn it_parses_utc_rfc3339_z() {
-        let t = DateTimeTz::from_str("2019-05-15T12:00:00Z").unwrap();
-        assert_eq!(t, DateTimeTz(UTC.ymd(2019, 5, 15).and_hms(12, 0, 0)));
-    }
-
-    #[test]
-    fn it_parses_rfc3339_with_offset() {
-        let t = DateTimeTz::from_str("2019-05-15T12:00:00-06:00").unwrap();
-        assert_eq!(t, DateTimeTz(UTC.ymd(2019, 5, 15).and_hms(18, 0, 0)));
-    }
-
-    #[test]
-    fn it_parses_rfc3339_with_tz() {
-        let t = DateTimeTz::from_str("2019-06-15T19:00:00Z US/Arizona").unwrap();
-        assert_eq!(t, DateTimeTz(UTC.ymd(2019, 6, 15).and_hms(19, 0, 0)));
-        assert_eq!(t, DateTimeTz(Arizona.ymd(2019, 6, 15).and_hms(12, 0, 0)));
-        assert_eq!(t, DateTimeTz(Central.ymd(2019, 6, 15).and_hms(14, 0, 0)));
-        assert_eq!(t.to_string(), "2019-06-15T19:00:00Z US/Arizona");
-    }
-
-    #[derive(Serialize)]
-    struct DemoStruct {
-        id: String,
-        dt: DateTimeTz,
-    }
-
-    // I used Arizona here specifically because large parts of Arizona do not honor DST, and so
-    // that adds in more ambiguity of the -0700 offset with Pacific time.
-    #[test]
-    fn it_json_serializes() {
-        let t = DateTimeTz::from_str("2019-06-15T19:00:00Z America/Phoenix").unwrap();
-        assert_eq!(
-            serde_json::to_string(&t).unwrap(),
-            "\"2019-06-15T19:00:00Z America/Phoenix\""
-        );
-
-        let demo = DemoStruct {
-            id: String::from("abcdefg"),
-            dt: t,
-        };
-        assert_eq!(
-            serde_json::to_string(&demo).unwrap(),
-            "{\"id\":\"abcdefg\",\"dt\":\"2019-06-15T19:00:00Z America/Phoenix\"}"
-        );
-    }
-
-    #[test]
-    fn it_json_parses() {
-        let t =
-            serde_json::from_str::<DateTimeTz>("\"2019-06-15T19:00:00Z America/Phoenix\"").unwrap();
-        assert_eq!(t, DateTimeTz(Phoenix.ymd(2019, 6, 15).and_hms(12, 0, 0)));
-    }
-}

emseries/src/lib.rs

@@ -71,11 +71,9 @@ extern crate thiserror;
 extern crate uuid;
 
 mod criteria;
-mod date_time_tz;
 mod series;
 mod types;
 
 pub use criteria::*;
-pub use date_time_tz::DateTimeTz;
 pub use series::Series;
-pub use types::{EmseriesReadError, EmseriesWriteError, Recordable, UniqueId};
+pub use types::{EmseriesReadError, EmseriesWriteError, Record, RecordId, Recordable, Timestamp};

emseries/src/series.rs

@@ -18,13 +18,51 @@ use serde::de::DeserializeOwned;
 use serde::ser::Serialize;
 use std::cmp::Ordering;
 use std::collections::HashMap;
+use std::convert::TryFrom;
 use std::fs::File;
 use std::fs::OpenOptions;
 use std::io::{BufRead, BufReader, LineWriter, Write};
 use std::iter::Iterator;
 
 use criteria::Criteria;
-use types::{EmseriesReadError, EmseriesWriteError, Record, Recordable, UniqueId};
+use types::{EmseriesReadError, EmseriesWriteError, Record, RecordId, Recordable};
+
+// A RecordOnDisk, a private data structure, is useful for handling all of the on-disk
+// representations of a record. Unlike [Record], this one can accept an empty data value to
+// represent that the data may have been deleted. This is not made public because, so far as the
+// user is concerned, any record in the system must have data associated with it.
+#[derive(Clone, Deserialize, Serialize)]
+struct RecordOnDisk<T: Clone + Recordable> {
+    id: RecordId,
+    data: Option<T>,
+}
+
+/*
+impl<T> FromStr for RecordOnDisk<T>
+where
+    T: Clone + Recordable + DeserializeOwned + Serialize,
+{
+    type Err = EmseriesReadError;
+
+    fn from_str(line: &str) -> Result<Self, Self::Err> {
+        serde_json::from_str(line).map_err(EmseriesReadError::JSONParseError)
+    }
+}
+*/
+
+impl<T: Clone + Recordable> TryFrom<RecordOnDisk<T>> for Record<T> {
+    type Error = EmseriesReadError;
+
+    fn try_from(disk_record: RecordOnDisk<T>) -> Result<Self, Self::Error> {
+        match disk_record.data {
+            Some(data) => Ok(Record {
+                id: disk_record.id,
+                data,
+            }),
+            None => Err(Self::Error::RecordDeleted(disk_record.id)),
+        }
+    }
+}
 
 /// An open time series database.
 ///
@@ -33,7 +71,7 @@ use types::{EmseriesReadError, EmseriesWriteError, Record, Recordable, UniqueId}
 pub struct Series<T: Clone + Recordable + DeserializeOwned + Serialize> {
     //path: String,
     writer: LineWriter<File>,
-    records: HashMap<UniqueId, T>,
+    records: HashMap<RecordId, Record<T>>,
 }
 
 impl<T> Series<T>
@@ -42,12 +80,12 @@ where
 {
     /// Open a time series database at the specified path. `path` is the full path and filename for
     /// the database.
-    pub fn open(path: &str) -> Result<Series<T>, EmseriesReadError> {
+    pub fn open<P: AsRef<std::path::Path>>(path: P) -> Result<Series<T>, EmseriesReadError> {
         let f = OpenOptions::new()
             .read(true)
             .append(true)
             .create(true)
-            .open(&path)
+            .open(path)
             .map_err(EmseriesReadError::IOError)?;
 
         let records = Series::load_file(&f)?;
@@ -62,20 +100,18 @@ where
     }
 
     /// Load a file and return all of the records in it.
-    fn load_file(f: &File) -> Result<HashMap<UniqueId, T>, EmseriesReadError> {
-        let mut records: HashMap<UniqueId, T> = HashMap::new();
+    fn load_file(f: &File) -> Result<HashMap<RecordId, Record<T>>, EmseriesReadError> {
+        let mut records: HashMap<RecordId, Record<T>> = HashMap::new();
         let reader = BufReader::new(f);
         for line in reader.lines() {
             match line {
                 Ok(line_) => {
-                    /* Can't create a JSONParseError because I can't actually create the underlying error.
-                    fail_point!("parse-line", Err(Error::JSONParseError()))
-                    */
-                    match line_.parse::<Record<T>>() {
-                        Ok(record) => match record.data {
-                            Some(val) => records.insert(record.id.clone(), val),
-                            None => records.remove(&record.id.clone()),
-                        },
+                    match serde_json::from_str::<RecordOnDisk<T>>(line_.as_ref())
+                        .map_err(EmseriesReadError::JSONParseError)
+                        .and_then(Record::try_from)
+                    {
+                        Ok(record) => records.insert(record.id, record.clone()),
+                        Err(EmseriesReadError::RecordDeleted(id)) => records.remove(&id),
                         Err(err) => return Err(err),
                     };
                 }
@@ -87,18 +123,20 @@ where
 
     /// Put a new record into the database. A unique id will be assigned to the record and
     /// returned.
-    pub fn put(&mut self, entry: T) -> Result<UniqueId, EmseriesWriteError> {
-        let uuid = UniqueId::new();
-        self.update(uuid.clone(), entry).and_then(|_| Ok(uuid))
+    pub fn put(&mut self, entry: T) -> Result<RecordId, EmseriesWriteError> {
+        let id = RecordId::default();
+        let record = Record { id, data: entry };
+        self.update(record)?;
+        Ok(id)
     }
 
-    /// Update an existing record. The `UniqueId` of the record passed into this function must match
-    /// the `UniqueId` of a record already in the database.
-    pub fn update(&mut self, uuid: UniqueId, entry: T) -> Result<(), EmseriesWriteError> {
-        self.records.insert(uuid.clone(), entry.clone());
-        let write_res = match serde_json::to_string(&Record {
-            id: uuid,
-            data: Some(entry),
+    /// Update an existing record. The [RecordId] of the record passed into this function must match
+    /// the [RecordId] of a record already in the database.
+    pub fn update(&mut self, record: Record<T>) -> Result<(), EmseriesWriteError> {
+        self.records.insert(record.id, record.clone());
+        let write_res = match serde_json::to_string(&RecordOnDisk {
+            id: record.id,
+            data: Some(record.data),
         }) {
             Ok(rec_str) => self
                 .writer
@@ -118,14 +156,14 @@ where
     /// Future note: while this deletes a record from the view, it only adds an entry to the
     /// database that indicates `data: null`. If record histories ever become important, the record
     /// and its entire history (including this delete) will still be available.
-    pub fn delete(&mut self, uuid: &UniqueId) -> Result<(), EmseriesWriteError> {
+    pub fn delete(&mut self, uuid: &RecordId) -> Result<(), EmseriesWriteError> {
         if !self.records.contains_key(uuid) {
             return Ok(());
         };
         self.records.remove(uuid);
 
-        let rec: Record<T> = Record {
-            id: uuid.clone(),
+        let rec: RecordOnDisk<T> = RecordOnDisk {
+            id: *uuid,
             data: None,
         };
         match serde_json::to_string(&rec) {
@@ -138,8 +176,8 @@ where
     }
 
     /// Get all of the records in the database.
-    pub fn records<'s>(&'s self) -> impl Iterator<Item = (&'s UniqueId, &'s T)> + 's {
-        self.records.iter()
+    pub fn records(&self) -> impl Iterator<Item = &Record<T>> {
+        self.records.values()
     }
 
     /*  The point of having Search is so that a lot of internal optimizations can happen once the
@@ -148,29 +186,29 @@ where
     pub fn search<'s>(
         &'s self,
         criteria: impl Criteria + 's,
-    ) -> impl Iterator<Item = (&'s UniqueId, &'s T)> + 's {
-        self.records().filter(move |&tr| criteria.apply(tr.1))
+    ) -> impl Iterator<Item = &'s Record<T>> + 's {
+        self.records().filter(move |&tr| criteria.apply(&tr.data))
     }
 
     /// Perform a search and sort the resulting records based on the comparison.
-    pub fn search_sorted<'s, C, CMP>(&'s self, criteria: C, compare: CMP) -> Vec<(&UniqueId, &T)>
+    pub fn search_sorted<'s, C, CMP>(&'s self, criteria: C, compare: CMP) -> Vec<&'s Record<T>>
     where
         C: Criteria + 's,
-        CMP: FnMut(&(&UniqueId, &T), &(&UniqueId, &T)) -> Ordering,
+        CMP: FnMut(&&Record<T>, &&Record<T>) -> Ordering,
     {
         let search_iter = self.search(criteria);
-        let mut records: Vec<(&UniqueId, &T)> = search_iter.collect();
+        let mut records: Vec<&Record<T>> = search_iter.collect();
         records.sort_by(compare);
         records
     }
 
     /// Get an exact record from the database based on unique id.
-    pub fn get(&self, uuid: &UniqueId) -> Option<T> {
-        self.records.get(uuid).map(|v| v.clone())
+    pub fn get(&self, uuid: &RecordId) -> Option<Record<T>> {
+        self.records.get(uuid).cloned()
     }
 
     /*
-    pub fn remove(&self, uuid: UniqueId) -> Result<(), EmseriesError> {
+    pub fn remove(&self, uuid: RecordId) -> Result<(), EmseriesError> {
         unimplemented!()
     }
     */

emseries/src/types.rs

@@ -10,10 +10,8 @@ Luminescent Dreams Tools is distributed in the hope that it will be useful, but
 You should have received a copy of the GNU General Public License along with Lumeto. If not, see <https://www.gnu.org/licenses/>.
 */
 
-use date_time_tz::DateTimeTz;
-use serde::de::DeserializeOwned;
-use serde::ser::Serialize;
-use std::{fmt, io, str};
+use chrono::{DateTime, FixedOffset, NaiveDate};
+use std::{cmp::Ordering, fmt, io, str};
 use thiserror::Error;
 use uuid::Uuid;
 
@@ -27,6 +25,9 @@ pub enum EmseriesReadError {
     #[error("Error parsing JSON: {0}")]
     JSONParseError(serde_json::error::Error),
 
+    #[error("Record was deleted")]
+    RecordDeleted(RecordId),
+
     /// Indicates a general IO error
     #[error("IO Error: {0}")]
     IOError(io::Error),
@@ -43,11 +44,74 @@ pub enum EmseriesWriteError {
     JSONWriteError(serde_json::error::Error),
 }
 
+#[derive(Debug, Clone, PartialEq, Eq)]
+/// A Timestamp, stored with reference to human reckoning. This could be either a Naive Date or a
+/// date and a time with a timezone. The idea of the "human reckoning" is that, no matter what
+/// timezone the record was created in, we want to group things based on the date that the human
+/// was perceiving at the time it was recorded.
+pub enum Timestamp {
+    DateTime(DateTime<FixedOffset>),
+    Date(NaiveDate),
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(untagged)]
+pub enum TimestampJS {
+    DateTime(String),
+    Date(String),
+}
+
+impl From<Timestamp> for TimestampJS {
+    fn from(s: Timestamp) -> TimestampJS {
+        match s {
+            Timestamp::DateTime(ts) => TimestampJS::DateTime(ts.to_rfc3339()),
+            Timestamp::Date(ts) => TimestampJS::Date(ts.to_string()),
+        }
+    }
+}
+
+impl From<TimestampJS> for Timestamp {
+    fn from(s: TimestampJS) -> Timestamp {
+        match s {
+            TimestampJS::DateTime(ts) => {
+                Timestamp::DateTime(DateTime::parse_from_rfc3339(&ts).unwrap())
+            }
+            TimestampJS::Date(ts) => Timestamp::Date(ts.parse::<NaiveDate>().unwrap()),
+        }
+    }
+}
+
+impl str::FromStr for Timestamp {
+    type Err = chrono::ParseError;
+    fn from_str(line: &str) -> Result<Self, Self::Err> {
+        DateTime::parse_from_rfc3339(line)
+            .map(Timestamp::DateTime)
+            .or(NaiveDate::from_str(line).map(Timestamp::Date))
+    }
+}
+
+impl PartialOrd for Timestamp {
+    fn partial_cmp(&self, other: &Timestamp) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl Ord for Timestamp {
+    fn cmp(&self, other: &Timestamp) -> Ordering {
+        match (self, other) {
+            (Timestamp::DateTime(dt1), Timestamp::DateTime(dt2)) => dt1.cmp(dt2),
+            (Timestamp::DateTime(dt1), Timestamp::Date(dt2)) => dt1.date_naive().cmp(dt2),
+            (Timestamp::Date(dt1), Timestamp::DateTime(dt2)) => dt1.cmp(&dt2.date_naive()),
+            (Timestamp::Date(dt1), Timestamp::Date(dt2)) => dt1.cmp(dt2),
+        }
+    }
+}
+
 /// Any element to be put into the database needs to be Recordable. This is the common API that
 /// will aid in searching and later in indexing records.
 pub trait Recordable {
     /// The timestamp for the record.
-    fn timestamp(&self) -> DateTimeTz;
+    fn timestamp(&self) -> Timestamp;
 
     /// A list of string tags that can be used for indexing. This list defined per-type.
     fn tags(&self) -> Vec<String>;
@@ -56,78 +120,88 @@ pub trait Recordable {
 /// Uniquely identifies a record.
 ///
 /// This is a wrapper around a basic uuid with some extra convenience methods.
-#[derive(Clone, Debug, Eq, Hash, PartialEq, Deserialize, Serialize)]
-pub struct UniqueId(Uuid);
+#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, Deserialize, Serialize)]
+pub struct RecordId(Uuid);
 
-impl UniqueId {
-    /// Create a new V4 UUID (this is the most common type in use these days).
-    pub fn new() -> UniqueId {
-        let id = Uuid::new_v4();
-        UniqueId(id)
+impl Default for RecordId {
+    fn default() -> Self {
+        Self(Uuid::new_v4())
     }
 }
 
-impl str::FromStr for UniqueId {
+impl str::FromStr for RecordId {
     type Err = EmseriesReadError;
 
-    /// Parse a UniqueId from a string. Raise UUIDParseError if the parsing fails.
+    /// Parse a RecordId from a string. Raise UUIDParseError if the parsing fails.
     fn from_str(val: &str) -> Result<Self, Self::Err> {
         Uuid::parse_str(val)
-            .map(UniqueId)
-            .map_err(|err| EmseriesReadError::UUIDParseError(err))
+            .map(RecordId)
+            .map_err(EmseriesReadError::UUIDParseError)
     }
 }
 
-impl fmt::Display for UniqueId {
+impl fmt::Display for RecordId {
     /// Convert to a hyphenated string
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
-        write!(f, "{}", self.0.to_hyphenated().to_string())
+        write!(f, "{}", self.0.to_hyphenated())
     }
 }
 
-/// Every record contains a unique ID and then the primary data, which itself must implementd the
-/// Recordable trait.
-#[derive(Clone, Deserialize, Serialize)]
+/// A record represents data that actually exists in the database. Users cannot make the record
+/// directly, as the database will create them.
+#[derive(Clone, Debug, PartialEq, Eq, Deserialize, Serialize)]
 pub struct Record<T: Clone + Recordable> {
-    pub id: UniqueId,
-    pub data: Option<T>,
+    pub id: RecordId,
+    pub data: T,
 }
 
-impl<T> str::FromStr for Record<T>
-where
-    T: Clone + Recordable + DeserializeOwned + Serialize,
-{
-    type Err = EmseriesReadError;
+impl<T: Clone + Recordable> Record<T> {
+    pub fn date(&self) -> NaiveDate {
+        match self.data.timestamp() {
+            Timestamp::DateTime(dt) => dt.date_naive(),
+            Timestamp::Date(dt) => dt,
+        }
+    }
 
-    fn from_str(line: &str) -> Result<Self, Self::Err> {
-        serde_json::from_str(&line).map_err(|err| EmseriesReadError::JSONParseError(err))
+    pub fn timestamp(&self) -> Timestamp {
+        self.data.timestamp()
+    }
+
+    pub fn map<Map, U>(self, map: Map) -> Record<U>
+    where
+        Map: Fn(T) -> U,
+        U: Clone + Recordable,
+    {
+        Record {
+            id: self.id,
+            data: map(self.data),
+        }
     }
 }
 
 #[cfg(test)]
 mod test {
     extern crate dimensioned;
+
     extern crate serde_json;
 
     use self::dimensioned::si::{Kilogram, KG};
-    use super::{Record, Recordable};
+    use super::*;
     use chrono::TimeZone;
     use chrono_tz::Etc::UTC;
-    use chrono_tz::US::Central;
-    use date_time_tz::DateTimeTz;
 
     #[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
     pub struct Weight(Kilogram<f64>);
 
     #[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
     pub struct WeightRecord {
-        pub date: DateTimeTz,
+        pub date: NaiveDate,
         pub weight: Weight,
     }
 
     impl Recordable for WeightRecord {
-        fn timestamp(&self) -> DateTimeTz {
-            self.date.clone()
+        fn timestamp(&self) -> Timestamp {
+            Timestamp::Date(self.date)
         }
 
         fn tags(&self) -> Vec<String> {
@@ -135,10 +209,31 @@ mod test {
         }
     }
 
-    const WEIGHT_ENTRY: &str = "{\"data\":{\"weight\":77.79109,\"date\":\"2003-11-10T06:00:00.000000000000Z\"},\"id\":\"3330c5b0-783f-4919-b2c4-8169c38f65ff\"}";
+    #[test]
+    fn timestamp_parses_utc_time() {
+        assert_eq!(
+            "2003-11-10T06:00:00Z".parse::<Timestamp>().unwrap(),
+            Timestamp::DateTime(
+                UTC.with_ymd_and_hms(2003, 11, 10, 6, 0, 0)
+                    .unwrap()
+                    .with_timezone(&FixedOffset::east_opt(0).unwrap())
+            ),
+        );
+    }
 
     #[test]
-    pub fn legacy_deserialization() {
+    fn timestamp_parses_date() {
+        assert_eq!(
+            "2023-11-10".parse::<Timestamp>().unwrap(),
+            Timestamp::Date(NaiveDate::from_ymd_opt(2023, 11, 10).unwrap())
+        );
+    }
+
+    /*
+    #[ignore]
+    fn v_alpha_serialization() {
+        const WEIGHT_ENTRY: &str = "{\"data\":{\"weight\":77.79109},\"date\":\"2003-11-10\",\"id\":\"3330c5b0-783f-4919-b2c4-8169c38f65ff\"}";
+
         let rec: Record<WeightRecord> = WEIGHT_ENTRY
             .parse()
             .expect("should successfully parse the record");
@@ -148,31 +243,65 @@ mod test {
         );
         assert_eq!(
             rec.data,
-            Some(WeightRecord {
-                date: DateTimeTz(UTC.ymd(2003, 11, 10).and_hms(6, 0, 0)),
+            WeightRecord {
+                date: NaiveDate::from_ymd_opt(2003, 11, 10).unwrap(),
                 weight: Weight(77.79109 * KG),
-            })
+            }
         );
     }
+    */
 
     #[test]
-    pub fn serialization_output() {
+    fn serialization_output() {
         let rec = WeightRecord {
-            date: DateTimeTz(UTC.ymd(2003, 11, 10).and_hms(6, 0, 0)),
+            date: NaiveDate::from_ymd_opt(2003, 11, 10).unwrap(),
             weight: Weight(77.0 * KG),
         };
         assert_eq!(
             serde_json::to_string(&rec).unwrap(),
-            "{\"date\":\"2003-11-10T06:00:00Z\",\"weight\":77.0}"
+            "{\"date\":\"2003-11-10\",\"weight\":77.0}"
         );
 
         let rec2 = WeightRecord {
-            date: DateTimeTz(Central.ymd(2003, 11, 10).and_hms(0, 0, 0)),
+            date: NaiveDate::from_ymd_opt(2003, 11, 10).unwrap(),
             weight: Weight(77.0 * KG),
         };
         assert_eq!(
             serde_json::to_string(&rec2).unwrap(),
-            "{\"date\":\"2003-11-10T06:00:00Z US/Central\",\"weight\":77.0}"
+            "{\"date\":\"2003-11-10\",\"weight\":77.0}"
         );
     }
+
+    #[test]
+    fn two_datetimes_can_be_compared() {
+        let time1 = Timestamp::DateTime(
+            UTC.with_ymd_and_hms(2003, 11, 10, 6, 0, 0)
+                .unwrap()
+                .with_timezone(&FixedOffset::east_opt(0).unwrap()),
+        );
+        let time2 = Timestamp::DateTime(
+            UTC.with_ymd_and_hms(2003, 11, 11, 6, 0, 0)
+                .unwrap()
+                .with_timezone(&FixedOffset::east_opt(0).unwrap()),
+        );
+        assert!(time1 < time2);
+    }
+
+    #[test]
+    fn two_dates_can_be_compared() {
+        let time1: Timestamp = Timestamp::Date(NaiveDate::from_ymd_opt(2003, 11, 10).unwrap());
+        let time2: Timestamp = Timestamp::Date(NaiveDate::from_ymd_opt(2003, 11, 11).unwrap());
+        assert!(time1 < time2);
+    }
+
+    #[test]
+    fn datetime_and_date_can_be_compared() {
+        let time1 = Timestamp::DateTime(
+            UTC.with_ymd_and_hms(2003, 11, 10, 6, 0, 0)
+                .unwrap()
+                .with_timezone(&FixedOffset::east_opt(0).unwrap()),
+        );
+        let time2 = Timestamp::Date(NaiveDate::from_ymd_opt(2003, 11, 11).unwrap());
+        assert!(time1 < time2)
+    }
 }

emseries/tests/test_io.rs

@@ -20,9 +20,9 @@ extern crate emseries;
 
 #[cfg(test)]
 mod test {
-    use chrono::prelude::*;
+    use chrono::{prelude::*};
     use chrono_tz::Etc::UTC;
-    use dimensioned::si::{Kilogram, Meter, Second, KG, M, S};
+    use dimensioned::si::{Kilogram, Meter, Second, M, S};
 
     use emseries::*;
 
@@ -34,15 +34,15 @@ mod test {
 
     #[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
     struct BikeTrip {
-        datetime: DateTimeTz,
+        datetime: DateTime<FixedOffset>,
         distance: Distance,
         duration: Duration,
         comments: String,
     }
 
     impl Recordable for BikeTrip {
-        fn timestamp(&self) -> DateTimeTz {
-            self.datetime.clone()
+        fn timestamp(&self) -> Timestamp {
+            Timestamp::DateTime(self.datetime)
         }
         fn tags(&self) -> Vec<String> {
             Vec::new()
@@ -52,31 +52,46 @@ mod test {
     fn mk_trips() -> [BikeTrip; 5] {
         [
             BikeTrip {
-                datetime: DateTimeTz(UTC.ymd(2011, 10, 29).and_hms(0, 0, 0)),
+                datetime: UTC
+                    .with_ymd_and_hms(2011, 10, 29, 0, 0, 0)
+                    .unwrap()
+                    .with_timezone(&FixedOffset::east_opt(0).unwrap()),
                 distance: Distance(58741.055 * M),
                 duration: Duration(11040.0 * S),
                 comments: String::from("long time ago"),
             },
             BikeTrip {
-                datetime: DateTimeTz(UTC.ymd(2011, 10, 31).and_hms(0, 0, 0)),
+                datetime: UTC
+                    .with_ymd_and_hms(2011, 10, 31, 0, 0, 0)
+                    .unwrap()
+                    .with_timezone(&FixedOffset::east_opt(0).unwrap()),
                 distance: Distance(17702.0 * M),
                 duration: Duration(2880.0 * S),
                 comments: String::from("day 2"),
             },
             BikeTrip {
-                datetime: DateTimeTz(UTC.ymd(2011, 11, 02).and_hms(0, 0, 0)),
+                datetime: UTC
+                    .with_ymd_and_hms(2011, 11, 02, 0, 0, 0)
+                    .unwrap()
+                    .with_timezone(&FixedOffset::east_opt(0).unwrap()),
                 distance: Distance(41842.945 * M),
                 duration: Duration(7020.0 * S),
                 comments: String::from("Do Some Distance!"),
             },
             BikeTrip {
-                datetime: DateTimeTz(UTC.ymd(2011, 11, 04).and_hms(0, 0, 0)),
+                datetime: UTC
+                    .with_ymd_and_hms(2011, 11, 04, 0, 0, 0)
+                    .unwrap()
+                    .with_timezone(&FixedOffset::east_opt(0).unwrap()),
                 distance: Distance(34600.895 * M),
                 duration: Duration(5580.0 * S),
                 comments: String::from("I did a lot of distance back then"),
             },
             BikeTrip {
-                datetime: DateTimeTz(UTC.ymd(2011, 11, 05).and_hms(0, 0, 0)),
+                datetime: UTC
+                    .with_ymd_and_hms(2011, 11, 05, 0, 0, 0)
+                    .unwrap()
+                    .with_timezone(&FixedOffset::east_opt(0).unwrap()),
                 distance: Distance(6437.376 * M),
                 duration: Duration(960.0 * S),
                 comments: String::from("day 5"),
@@ -84,7 +99,7 @@ mod test {
         ]
     }
 
-    fn run_test<T>(test: T) -> ()
+    fn run_test<T>(test: T)
     where
         T: FnOnce(tempfile::TempPath),
     {
@@ -93,14 +108,14 @@ mod test {
         test(tmp_path);
     }
 
-    fn run<T>(test: T) -> ()
+    fn run<T>(test: T)
     where
         T: FnOnce(Series<BikeTrip>),
     {
         let tmp_file = tempfile::NamedTempFile::new().expect("temporary path created");
         let tmp_path = tmp_file.into_temp_path();
-        let ts: Series<BikeTrip> = Series::open(&tmp_path.to_string_lossy())
-            .expect("the time series should open correctly");
+        let ts: Series<BikeTrip> =
+            Series::open(&tmp_path).expect("the time series should open correctly");
         test(ts);
     }
 
@@ -122,11 +137,15 @@ mod test {
                 Some(tr) => {
                     assert_eq!(
                         tr.timestamp(),
-                        DateTimeTz(UTC.ymd(2011, 10, 29).and_hms(0, 0, 0))
+                        Timestamp::DateTime(
+                            UTC.with_ymd_and_hms(2011, 10, 29, 0, 0, 0)
+                                .unwrap()
+                                .with_timezone(&FixedOffset::east_opt(0).unwrap())
+                        )
                     );
-                    assert_eq!(tr.duration, Duration(11040.0 * S));
-                    assert_eq!(tr.comments, String::from("long time ago"));
-                    assert_eq!(tr, trips[0]);
+                    assert_eq!(tr.data.duration, Duration(11040.0 * S));
+                    assert_eq!(tr.data.comments, String::from("long time ago"));
+                    assert_eq!(tr.data, trips[0]);
                 }
             }
         })
@@ -136,20 +155,22 @@ mod test {
     pub fn can_search_for_an_entry_with_exact_time() {
         run_test(|path| {
             let trips = mk_trips();
-            let mut ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                .expect("expect the time series to open correctly");
+            let mut ts: Series<BikeTrip> =
+                Series::open(&path).expect("expect the time series to open correctly");
 
             for trip in &trips[0..=4] {
                 ts.put(trip.clone()).expect("expect a successful put");
             }
 
-            let v: Vec<(&UniqueId, &BikeTrip)> = ts
-                .search(exact_time(DateTimeTz(
-                    UTC.ymd(2011, 10, 31).and_hms(0, 0, 0),
+            let v: Vec<&Record<BikeTrip>> = ts
+                .search(exact_time(Timestamp::DateTime(
+                    UTC.with_ymd_and_hms(2011, 10, 31, 0, 0, 0)
+                        .unwrap()
+                        .with_timezone(&FixedOffset::east_opt(0).unwrap()),
                 )))
                 .collect();
             assert_eq!(v.len(), 1);
-            assert_eq!(*v[0].1, trips[1]);
+            assert_eq!(v[0].data, trips[1]);
         })
     }
 
@@ -157,26 +178,34 @@ mod test {
     pub fn can_get_entries_in_time_range() {
         run_test(|path| {
             let trips = mk_trips();
-            let mut ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                .expect("expect the time series to open correctly");
+            let mut ts: Series<BikeTrip> =
+                Series::open(&path).expect("expect the time series to open correctly");
 
             for trip in &trips[0..=4] {
                 ts.put(trip.clone()).expect("expect a successful put");
             }
 
-            let v: Vec<(&UniqueId, &BikeTrip)> = ts.search_sorted(
+            let v: Vec<&Record<BikeTrip>> = ts.search_sorted(
                 time_range(
-                    DateTimeTz(UTC.ymd(2011, 10, 31).and_hms(0, 0, 0)),
+                    Timestamp::DateTime(
+                        UTC.with_ymd_and_hms(2011, 10, 31, 0, 0, 0)
+                            .unwrap()
+                            .with_timezone(&FixedOffset::east_opt(0).unwrap()),
+                    ),
                     true,
-                    DateTimeTz(UTC.ymd(2011, 11, 04).and_hms(0, 0, 0)),
+                    Timestamp::DateTime(
+                        UTC.with_ymd_and_hms(2011, 11, 04, 0, 0, 0)
+                            .unwrap()
+                            .with_timezone(&FixedOffset::east_opt(0).unwrap()),
+                    ),
                     true,
                 ),
-                |l, r| l.1.timestamp().cmp(&r.1.timestamp()),
+                |l, r| l.timestamp().cmp(&r.timestamp()),
             );
             assert_eq!(v.len(), 3);
-            assert_eq!(*v[0].1, trips[1]);
-            assert_eq!(*v[1].1, trips[2]);
-            assert_eq!(*v[2].1, trips[3]);
+            assert_eq!(v[0].data, trips[1]);
+            assert_eq!(v[1].data, trips[2]);
+            assert_eq!(v[2].data, trips[3]);
         })
     }
 
@@ -186,8 +215,8 @@ mod test {
             let trips = mk_trips();
 
             {
-                let mut ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                    .expect("expect the time series to open correctly");
+                let mut ts: Series<BikeTrip> =
+                    Series::open(&path).expect("expect the time series to open correctly");
 
                 for trip in &trips[0..=4] {
                     ts.put(trip.clone()).expect("expect a successful put");
@@ -195,21 +224,29 @@ mod test {
             }
 
             {
-                let ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                    .expect("expect the time series to open correctly");
-                let v: Vec<(&UniqueId, &BikeTrip)> = ts.search_sorted(
+                let ts: Series<BikeTrip> =
+                    Series::open(&path).expect("expect the time series to open correctly");
+                let v: Vec<&Record<BikeTrip>> = ts.search_sorted(
                     time_range(
-                        DateTimeTz(UTC.ymd(2011, 10, 31).and_hms(0, 0, 0)),
+                        Timestamp::DateTime(
+                            UTC.with_ymd_and_hms(2011, 10, 31, 0, 0, 0)
+                                .unwrap()
+                                .with_timezone(&FixedOffset::east_opt(0).unwrap()),
+                        ),
                         true,
-                        DateTimeTz(UTC.ymd(2011, 11, 04).and_hms(0, 0, 0)),
+                        Timestamp::DateTime(
+                            UTC.with_ymd_and_hms(2011, 11, 04, 0, 0, 0)
+                                .unwrap()
+                                .with_timezone(&FixedOffset::east_opt(0).unwrap()),
+                        ),
                         true,
                     ),
-                    |l, r| l.1.timestamp().cmp(&r.1.timestamp()),
+                    |l, r| l.timestamp().cmp(&r.timestamp()),
                 );
                 assert_eq!(v.len(), 3);
-                assert_eq!(*v[0].1, trips[1]);
-                assert_eq!(*v[1].1, trips[2]);
-                assert_eq!(*v[2].1, trips[3]);
+                assert_eq!(v[0].data, trips[1]);
+                assert_eq!(v[1].data, trips[2]);
+                assert_eq!(v[2].data, trips[3]);
             }
         })
     }
@@ -220,8 +257,8 @@ mod test {
             let trips = mk_trips();
 
             {
-                let mut ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                    .expect("expect the time series to open correctly");
+                let mut ts: Series<BikeTrip> =
+                    Series::open(&path).expect("expect the time series to open correctly");
 
                 for trip in &trips[0..=2] {
                     ts.put(trip.clone()).expect("expect a successful put");
@@ -229,41 +266,57 @@ mod test {
             }
 
             {
-                let mut ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                    .expect("expect the time series to open correctly");
-                let v: Vec<(&UniqueId, &BikeTrip)> = ts.search_sorted(
+                let mut ts: Series<BikeTrip> =
+                    Series::open(&path).expect("expect the time series to open correctly");
+                let v: Vec<&Record<BikeTrip>> = ts.search_sorted(
                     time_range(
-                        DateTimeTz(UTC.ymd(2011, 10, 31).and_hms(0, 0, 0)),
+                        Timestamp::DateTime(
+                            UTC.with_ymd_and_hms(2011, 10, 31, 0, 0, 0)
+                                .unwrap()
+                                .with_timezone(&FixedOffset::east_opt(0).unwrap()),
+                        ),
                         true,
-                        DateTimeTz(UTC.ymd(2011, 11, 04).and_hms(0, 0, 0)),
+                        Timestamp::DateTime(
+                            UTC.with_ymd_and_hms(2011, 11, 04, 0, 0, 0)
+                                .unwrap()
+                                .with_timezone(&FixedOffset::east_opt(0).unwrap()),
+                        ),
                         true,
                     ),
-                    |l, r| l.1.timestamp().cmp(&r.1.timestamp()),
+                    |l, r| l.timestamp().cmp(&r.timestamp()),
                 );
                 assert_eq!(v.len(), 2);
-                assert_eq!(*v[0].1, trips[1]);
-                assert_eq!(*v[1].1, trips[2]);
+                assert_eq!(v[0].data, trips[1]);
+                assert_eq!(v[1].data, trips[2]);
                 ts.put(trips[3].clone()).expect("expect a successful put");
                 ts.put(trips[4].clone()).expect("expect a successful put");
             }
 
             {
-                let ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                    .expect("expect the time series to open correctly");
-                let v: Vec<(&UniqueId, &BikeTrip)> = ts.search_sorted(
+                let ts: Series<BikeTrip> =
+                    Series::open(&path).expect("expect the time series to open correctly");
+                let v: Vec<&Record<BikeTrip>> = ts.search_sorted(
                     time_range(
-                        DateTimeTz(UTC.ymd(2011, 10, 31).and_hms(0, 0, 0)),
+                        Timestamp::DateTime(
+                            UTC.with_ymd_and_hms(2011, 10, 31, 0, 0, 0)
+                                .unwrap()
+                                .with_timezone(&FixedOffset::east_opt(0).unwrap()),
+                        ),
                         true,
-                        DateTimeTz(UTC.ymd(2011, 11, 05).and_hms(0, 0, 0)),
+                        Timestamp::DateTime(
+                            UTC.with_ymd_and_hms(2011, 11, 05, 0, 0, 0)
+                                .unwrap()
+                                .with_timezone(&FixedOffset::east_opt(0).unwrap()),
+                        ),
                         true,
                     ),
-                    |l, r| l.1.timestamp().cmp(&r.1.timestamp()),
+                    |l, r| l.timestamp().cmp(&r.timestamp()),
                 );
                 assert_eq!(v.len(), 4);
-                assert_eq!(*v[0].1, trips[1]);
-                assert_eq!(*v[1].1, trips[2]);
-                assert_eq!(*v[2].1, trips[3]);
-                assert_eq!(*v[3].1, trips[4]);
+                assert_eq!(v[0].data, trips[1]);
+                assert_eq!(v[1].data, trips[2]);
+                assert_eq!(v[2].data, trips[3]);
+                assert_eq!(v[3].data, trips[4]);
             }
         })
     }
@@ -273,8 +326,8 @@ mod test {
         run_test(|path| {
             let trips = mk_trips();
 
-            let mut ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                .expect("expect the time series to open correctly");
+            let mut ts: Series<BikeTrip> =
+                Series::open(&path).expect("expect the time series to open correctly");
 
             ts.put(trips[0].clone()).expect("expect a successful put");
             ts.put(trips[1].clone()).expect("expect a successful put");
@@ -283,9 +336,8 @@ mod test {
             match ts.get(&trip_id) {
                 None => assert!(false, "record not found"),
                 Some(mut trip) => {
-                    trip.distance = Distance(50000.0 * M);
-                    ts.update(trip_id.clone(), trip)
-                        .expect("expect record to update");
+                    trip.data.distance = Distance(50000.0 * M);
+                    ts.update(trip).expect("expect record to update");
                 }
             };
 
@@ -293,12 +345,12 @@ mod test {
                 None => assert!(false, "record not found"),
                 Some(trip) => {
                     assert_eq!(
-                        trip.datetime,
-                        DateTimeTz(UTC.ymd(2011, 11, 02).and_hms(0, 0, 0))
+                        trip.data.datetime,
+                        UTC.with_ymd_and_hms(2011, 11, 02, 0, 0, 0).unwrap()
                     );
-                    assert_eq!(trip.distance, Distance(50000.0 * M));
-                    assert_eq!(trip.duration, Duration(7020.0 * S));
-                    assert_eq!(trip.comments, String::from("Do Some Distance!"));
+                    assert_eq!(trip.data.distance, Distance(50000.0 * M));
+                    assert_eq!(trip.data.duration, Duration(7020.0 * S));
+                    assert_eq!(trip.data.comments, String::from("Do Some Distance!"));
                 }
             }
         })
@@ -310,8 +362,8 @@ mod test {
             let trips = mk_trips();
 
             {
-                let mut ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                    .expect("expect the time series to open correctly");
+                let mut ts: Series<BikeTrip> =
+                    Series::open(&path).expect("expect the time series to open correctly");
 
                 ts.put(trips[0].clone()).expect("expect a successful put");
                 ts.put(trips[1].clone()).expect("expect a successful put");
@@ -320,32 +372,36 @@ mod test {
                 match ts.get(&trip_id) {
                     None => assert!(false, "record not found"),
                     Some(mut trip) => {
-                        trip.distance = Distance(50000.0 * M);
-                        ts.update(trip_id, trip).expect("expect record to update");
+                        trip.data.distance = Distance(50000.0 * M);
+                        ts.update(trip).expect("expect record to update");
                     }
                 };
             }
 
             {
-                let ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                    .expect("expect the time series to open correctly");
+                let ts: Series<BikeTrip> =
+                    Series::open(&path).expect("expect the time series to open correctly");
 
-                let trips: Vec<(&UniqueId, &BikeTrip)> = ts.records().collect();
+                let trips: Vec<&Record<BikeTrip>> = ts.records().collect();
                 assert_eq!(trips.len(), 3);
 
-                let trips: Vec<(&UniqueId, &BikeTrip)> = ts
-                    .search(exact_time(DateTimeTz(
-                        UTC.ymd(2011, 11, 02).and_hms(0, 0, 0),
+                let trips: Vec<&Record<BikeTrip>> = ts
+                    .search(exact_time(Timestamp::DateTime(
+                        UTC.with_ymd_and_hms(2011, 11, 02, 0, 0, 0)
+                            .unwrap()
+                            .with_timezone(&FixedOffset::east_opt(0).unwrap()),
                     )))
                     .collect();
                 assert_eq!(trips.len(), 1);
                 assert_eq!(
-                    trips[0].1.datetime,
-                    DateTimeTz(UTC.ymd(2011, 11, 02).and_hms(0, 0, 0))
+                    trips[0].data.datetime,
+                    UTC.with_ymd_and_hms(2011, 11, 02, 0, 0, 0)
+                        .unwrap()
+                        .with_timezone(&FixedOffset::east_opt(0).unwrap())
                 );
-                assert_eq!(trips[0].1.distance, Distance(50000.0 * M));
-                assert_eq!(trips[0].1.duration, Duration(7020.0 * S));
-                assert_eq!(trips[0].1.comments, String::from("Do Some Distance!"));
+                assert_eq!(trips[0].data.distance, Distance(50000.0 * M));
+                assert_eq!(trips[0].data.duration, Duration(7020.0 * S));
+                assert_eq!(trips[0].data.comments, String::from("Do Some Distance!"));
             }
         })
     }
@@ -356,22 +412,21 @@ mod test {
             let trips = mk_trips();
 
             {
-                let mut ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                    .expect("expect the time series to open correctly");
+                let mut ts: Series<BikeTrip> =
+                    Series::open(&path).expect("expect the time series to open correctly");
                 let trip_id = ts.put(trips[0].clone()).expect("expect a successful put");
                 ts.put(trips[1].clone()).expect("expect a successful put");
                 ts.put(trips[2].clone()).expect("expect a successful put");
-
                 ts.delete(&trip_id).expect("successful delete");
 
-                let recs: Vec<(&UniqueId, &BikeTrip)> = ts.records().collect();
+                let recs: Vec<&Record<BikeTrip>> = ts.records().collect();
                 assert_eq!(recs.len(), 2);
             }
 
             {
-                let ts: Series<BikeTrip> = Series::open(&path.to_string_lossy())
-                    .expect("expect the time series to open correctly");
-                let recs: Vec<(&UniqueId, &BikeTrip)> = ts.records().collect();
+                let ts: Series<BikeTrip> =
+                    Series::open(&path).expect("expect the time series to open correctly");
+                let recs: Vec<&Record<BikeTrip>> = ts.records().collect();
                 assert_eq!(recs.len(), 2);
             }
         })
@@ -382,13 +437,13 @@ mod test {
 
     #[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
     pub struct WeightRecord {
-        pub date: DateTimeTz,
+        pub date: chrono::NaiveDate,
         pub weight: Weight,
     }
 
     impl Recordable for WeightRecord {
-        fn timestamp(&self) -> DateTimeTz {
-            self.date.clone()
+        fn timestamp(&self) -> Timestamp {
+            Timestamp::Date(self.date)
         }
 
         fn tags(&self) -> Vec<String> {
@@ -396,6 +451,7 @@ mod test {
         }
     }
 
+    /*
     #[test]
     pub fn legacy_file_load() {
         let ts: Series<WeightRecord> =
@@ -410,4 +466,5 @@ mod test {
             Some(rec) => assert_eq!(rec.weight, Weight(77.79109 * KG)),
         }
     }
+    */
 }

file-service/.gitignore

@@ -0,0 +1 @@
+fixtures

file-service/.ignore

@@ -0,0 +1,2 @@
+fixtures
+var

file-service/Cargo.toml

@@ -0,0 +1,47 @@
+[package]
+name = "file-service"
+version = "0.2.0"
+authors = ["savanni@luminescent-dreams.com"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "file_service"
+path = "src/lib.rs"
+
+[[bin]]
+name = "file-service"
+path = "src/main.rs"
+
+[target.auth-cli.dependencies]
+
+[dependencies]
+authdb              = { path = "../authdb/" }
+base64ct            = { version = "1", features = [ "alloc" ] }
+build_html          = { version = "2" }
+bytes               = { version = "1" }
+chrono              = { version = "0.4", features = ["serde"] }
+clap                = { version = "4", features = [ "derive" ] }
+cookie              = { version = "0.17" }
+futures-util        = { version = "0.3" }
+hex-string          = "0.1.0"
+http                = { version = "0.2" }
+image               = "0.23.5"
+logger              = "*"
+log                 = { version = "0.4" }
+mime                = "0.3.16"
+mime_guess          = "2.0.3"
+pretty_env_logger   = { version = "0.5" }
+serde_json          = "*"
+serde               = { version = "1.0", features = ["derive"] }
+sha2                = { version = "0.10" }
+thiserror           = { version = "1" }
+tokio               = { version = "1", features = [ "full" ] }
+uuid                = { version = "0.4", features = [ "serde", "v4" ] }
+warp                = { version = "0.3" }
+
+[dev-dependencies]
+cool_asserts        = { version = "2" }
+tempdir             = { version = "0.3" }
+

file-service/authdb.json

@@ -0,0 +1 @@
+[{"jti":"ac3a46c6-3fa1-4d0a-af12-e7d3fefdc878","aud":"savanni","exp":1621351436,"iss":"savanni","iat":1589729036,"sub":"https://savanni.luminescent-dreams.com/file-service/","perms":["admin"]}]

file-service/dist.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+VERSION=`cat Cargo.toml | grep "^version =" | sed -r 's/^version = "(.+)"$/\1/'`
+
+mkdir -p dist
+cp ../target/release/file-service dist
+cp ../target/release/auth-cli dist
+strip dist/file-service
+strip dist/auth-cli
+tar -czf file-service-${VERSION}.tgz dist/
+

file-service/src/handlers.rs

@@ -0,0 +1,279 @@
+use build_html::Html;
+use bytes::Buf;
+use file_service::WriteFileError;
+use futures_util::StreamExt;
+use http::{Error, StatusCode};
+use std::collections::HashMap;
+use std::io::Read;
+use warp::{filters::multipart::FormData, http::Response, multipart::Part};
+
+use crate::{pages, App, AuthToken, FileId, FileInfo, ReadFileError, SessionToken};
+
+const CSS: &str = include_str!("../templates/style.css");
+
+pub async fn handle_index(
+    app: App,
+    token: Option<SessionToken>,
+) -> Result<Response<String>, Error> {
+    match token {
+        Some(token) => match app.validate_session(token).await {
+            Ok(_) => render_gallery_page(app).await,
+            Err(err) => render_auth_page(Some(format!("session expired: {:?}", err))),
+        },
+        None => render_auth_page(None),
+    }
+}
+
+pub async fn handle_css() -> Result<Response<String>, Error> {
+    Response::builder()
+        .header("content-type", "text/css")
+        .status(StatusCode::OK)
+        .body(CSS.to_owned())
+}
+
+pub fn render_auth_page(message: Option<String>) -> Result<Response<String>, Error> {
+    Response::builder()
+        .status(StatusCode::OK)
+        .body(pages::auth(message).to_html_string())
+}
+
+pub async fn render_gallery_page(app: App) -> Result<Response<String>, Error> {
+    match app.list_files().await {
+        Ok(ids) => {
+            let mut files = vec![];
+            for id in ids.into_iter() {
+                let file = app.get_file(&id).await;
+                files.push(file);
+            }
+            Response::builder()
+                .header("content-type", "text/html")
+                .status(StatusCode::OK)
+                .body(pages::gallery(files).to_html_string())
+        }
+        Err(_) => Response::builder()
+            .header("content-type", "text/html")
+            .status(StatusCode::INTERNAL_SERVER_ERROR)
+            .body("".to_owned()),
+    }
+}
+
+pub async fn thumbnail(
+    app: App,
+    id: String,
+    old_etags: Option<String>,
+) -> Result<Response<Vec<u8>>, Error> {
+    match app.get_file(&FileId::from(id)).await {
+        Ok(file) => serve_file(file.info.clone(), || file.thumbnail(), old_etags),
+        Err(_err) => Response::builder()
+            .status(StatusCode::NOT_FOUND)
+            .body(vec![]),
+    }
+}
+
+pub async fn file(
+    app: App,
+    id: String,
+    old_etags: Option<String>,
+) -> Result<Response<Vec<u8>>, Error> {
+    match app.get_file(&FileId::from(id)).await {
+        Ok(file) => serve_file(file.info.clone(), || file.content(), old_etags),
+        Err(_err) => Response::builder()
+            .status(StatusCode::NOT_FOUND)
+            .body(vec![]),
+    }
+}
+
+pub async fn handle_auth(
+    app: App,
+    form: HashMap<String, String>,
+) -> Result<http::Response<String>, Error> {
+    match form.get("password") {
+        Some(token) => match app.authenticate(AuthToken::from(token.clone())).await {
+            Ok(Some(session_token)) => Response::builder()
+                .header("location", "/")
+                .header(
+                    "set-cookie",
+                    format!(
+                        "session={}; Secure; HttpOnly; SameSite=Strict",
+                        *session_token
+                    ),
+                )
+                .status(StatusCode::SEE_OTHER)
+                .body("".to_owned()),
+            Ok(None) => render_auth_page(Some("no user found".to_owned())),
+            Err(_) => render_auth_page(Some("invalid auth token".to_owned())),
+        },
+        None => render_auth_page(Some("no token available".to_owned())),
+    }
+}
+
+pub async fn handle_upload(
+    app: App,
+    token: SessionToken,
+    form: FormData,
+) -> Result<http::Response<String>, Error> {
+    match app.validate_session(token).await {
+        Ok(Some(_)) => match process_file_upload(app, form).await {
+            Ok(_) => Response::builder()
+                .header("location", "/")
+                .status(StatusCode::SEE_OTHER)
+                .body("".to_owned()),
+            Err(UploadError::FilenameMissing) => Response::builder()
+                .status(StatusCode::BAD_REQUEST)
+                .body("filename is required for all files".to_owned()),
+            Err(UploadError::WriteFileError(err)) => Response::builder()
+                .status(StatusCode::INTERNAL_SERVER_ERROR)
+                .body(format!("could not write to the file system: {:?}", err)),
+            Err(UploadError::WarpError(err)) => Response::builder()
+                .status(StatusCode::INTERNAL_SERVER_ERROR)
+                .body(format!("error with the app framework: {:?}", err)),
+        },
+        _ => Response::builder()
+            .status(StatusCode::UNAUTHORIZED)
+            .body("".to_owned()),
+    }
+}
+
+pub async fn handle_delete(
+    app: App,
+    token: SessionToken,
+    id: FileId,
+) -> Result<http::Response<String>, Error> {
+    match app.validate_session(token).await {
+        Ok(Some(_)) => match app.delete_file(id).await {
+            Ok(_) => Response::builder()
+                .header("location", "/")
+                .status(StatusCode::SEE_OTHER)
+                .body("".to_owned()),
+            Err(_) => unimplemented!(),
+        },
+        _ => Response::builder()
+            .status(StatusCode::UNAUTHORIZED)
+            .body("".to_owned()),
+    }
+}
+
+fn serve_file<F>(
+    info: FileInfo,
+    file: F,
+    old_etags: Option<String>,
+) -> http::Result<http::Response<Vec<u8>>>
+where
+    F: FnOnce() -> Result<Vec<u8>, ReadFileError>,
+{
+    match old_etags {
+        Some(old_etags) if old_etags != info.hash => Response::builder()
+            .header("content-type", info.file_type)
+            .status(StatusCode::NOT_MODIFIED)
+            .body(vec![]),
+        _ => match file() {
+            Ok(content) => Response::builder()
+                .header("content-type", info.file_type)
+                .header("etag", info.hash)
+                .status(StatusCode::OK)
+                .body(content),
+            Err(_) => Response::builder()
+                .status(StatusCode::INTERNAL_SERVER_ERROR)
+                .body(vec![]),
+        },
+    }
+}
+
+async fn collect_multipart(
+    mut stream: warp::filters::multipart::FormData,
+) -> Result<Vec<(Option<String>, Option<String>, Vec<u8>)>, warp::Error> {
+    let mut content: Vec<(Option<String>, Option<String>, Vec<u8>)> = Vec::new();
+
+    while let Some(part) = stream.next().await {
+        match part {
+            Ok(part) => content.push(collect_content(part).await.unwrap()),
+            Err(err) => return Err(err),
+        }
+    }
+
+    Ok(content)
+}
+
+async fn collect_content(
+    mut part: Part,
+) -> Result<(Option<String>, Option<String>, Vec<u8>), String> {
+    let mut content: Vec<u8> = Vec::new();
+
+    while let Some(Ok(data)) = part.data().await {
+        let mut reader = data.reader();
+        reader.read_to_end(&mut content).unwrap();
+    }
+
+    Ok((
+        part.content_type().map(|s| s.to_owned()),
+        part.filename().map(|s| s.to_owned()),
+        content,
+    ))
+}
+
+/*
+async fn handle_upload(
+    form: warp::filters::multipart::FormData,
+    app: App,
+) -> warp::http::Result<warp::http::Response<String>> {
+    let files = collect_multipart(form).await;
+    match files {
+        Ok(files) => {
+            for (_, filename, content) in files {
+                match filename {
+                    Some(filename) => {
+                        app.add_file(filename, content).unwrap();
+                    }
+                    None => {
+                        return warp::http::Response::builder()
+                            .status(StatusCode::BAD_REQUEST)
+                            .body("".to_owned())
+                    }
+                }
+            }
+        }
+        Err(_err) => {
+            return warp::http::Response::builder()
+                .status(StatusCode::BAD_REQUEST)
+                .body("".to_owned())
+        }
+    }
+
+    // println!("file length: {:?}", files.map(|f| f.len()));
+    warp::http::Response::builder()
+        .header("location", "/")
+        .status(StatusCode::SEE_OTHER)
+        .body("".to_owned())
+}
+*/
+
+enum UploadError {
+    FilenameMissing,
+    WriteFileError(WriteFileError),
+    WarpError(warp::Error),
+}
+
+impl From<WriteFileError> for UploadError {
+    fn from(err: WriteFileError) -> Self {
+        Self::WriteFileError(err)
+    }
+}
+
+impl From<warp::Error> for UploadError {
+    fn from(err: warp::Error) -> Self {
+        Self::WarpError(err)
+    }
+}
+
+async fn process_file_upload(app: App, form: FormData) -> Result<(), UploadError> {
+    let files = collect_multipart(form).await?;
+    for (_, filename, content) in files {
+        match filename {
+            Some(filename) => {
+                app.add_file(filename, content).await?;
+            }
+            None => return Err(UploadError::FilenameMissing),
+        }
+    }
+    Ok(())
+}

file-service/src/html.rs

@@ -0,0 +1,208 @@
+use build_html::{self, Html, HtmlContainer};
+
+#[derive(Clone, Debug, Default)]
+pub struct Attributes(Vec<(String, String)>);
+
+/*
+impl FromIterator<(String, String)> for Attributes {
+    fn from_iter<T>(iter: T) -> Self
+    where
+        T: IntoIterator<Item = (String, String)>,
+    {
+        Attributes(iter.collect::<Vec<(String, String)>>())
+    }
+}
+
+impl FromIterator<(&str, &str)> for Attributes {
+    fn from_iter<T>(iter: T) -> Self
+    where
+        T: IntoIterator<Item = (&str, &str)>,
+    {
+        unimplemented!()
+    }
+}
+*/
+
+impl ToString for Attributes {
+    fn to_string(&self) -> String {
+        self.0
+            .iter()
+            .map(|(key, value)| format!("{}=\"{}\"", key, value))
+            .collect::<Vec<String>>()
+            .join(" ")
+    }
+}
+
+#[derive(Clone, Debug)]
+pub struct Form {
+    path: String,
+    method: String,
+    encoding: Option<String>,
+    elements: String,
+}
+
+impl Form {
+    pub fn new() -> Self {
+        Self {
+            path: "/".to_owned(),
+            method: "get".to_owned(),
+            encoding: None,
+            elements: "".to_owned(),
+        }
+    }
+
+    pub fn with_path(mut self, path: &str) -> Self {
+        self.path = path.to_owned();
+        self
+    }
+
+    pub fn with_method(mut self, method: &str) -> Self {
+        self.method = method.to_owned();
+        self
+    }
+
+    pub fn with_encoding(mut self, encoding: &str) -> Self {
+        self.encoding = Some(encoding.to_owned());
+        self
+    }
+}
+
+impl Html for Form {
+    fn to_html_string(&self) -> String {
+        let encoding = match self.encoding {
+            Some(ref encoding) => format!("enctype=\"{encoding}\"", encoding = encoding),
+            None => "".to_owned(),
+        };
+        format!(
+            "<form action=\"{path}\" method=\"{method}\" {encoding}>\n{elements}\n</form>\n",
+            path = self.path,
+            method = self.method,
+            encoding = encoding,
+            elements = self.elements.to_html_string(),
+        )
+    }
+}
+
+impl HtmlContainer for Form {
+    fn add_html<H: Html>(&mut self, html: H) {
+        self.elements.push_str(&html.to_html_string());
+    }
+}
+
+#[derive(Clone, Debug)]
+pub struct Input {
+    ty: String,
+    name: String,
+    id: Option<String>,
+    value: Option<String>,
+    attributes: Attributes,
+}
+
+impl Html for Input {
+    fn to_html_string(&self) -> String {
+        let id = match self.id {
+            Some(ref id) => format!("id=\"{}\"", id),
+            None => "".to_owned(),
+        };
+        let value = match self.value {
+            Some(ref value) => format!("value=\"{}\"", value),
+            None => "".to_owned(),
+        };
+        let attrs = self.attributes.to_string();
+
+        format!(
+            "<input type=\"{ty}\" name=\"{name}\" {id} {value} {attrs} />\n",
+            ty = self.ty,
+            name = self.name,
+            id = id,
+            value = value,
+            attrs = attrs,
+        )
+    }
+}
+
+impl Input {
+    pub fn new(ty: &str, name: &str) -> Self {
+        Self {
+            ty: ty.to_owned(),
+            name: name.to_owned(),
+            id: None,
+            value: None,
+            attributes: Attributes::default(),
+        }
+    }
+
+    pub fn with_id(mut self, val: &str) -> Self {
+        self.id = Some(val.to_owned());
+        self
+    }
+
+    pub fn with_attributes<'a>(
+        mut self,
+        values: impl IntoIterator<Item = (&'a str, &'a str)>,
+    ) -> Self {
+        self.attributes = Attributes(
+            values
+                .into_iter()
+                .map(|(a, b)| (a.to_owned(), b.to_owned()))
+                .collect::<Vec<(String, String)>>(),
+        );
+        self
+    }
+}
+
+#[derive(Clone, Debug)]
+pub struct Button {
+    ty: Option<String>,
+    name: Option<String>,
+    label: String,
+    attributes: Attributes,
+}
+
+impl Button {
+    pub fn new(label: &str) -> Self {
+        Self {
+            ty: None,
+            name: None,
+            label: label.to_owned(),
+            attributes: Attributes::default(),
+        }
+    }
+
+    pub fn with_type(mut self, ty: &str) -> Self {
+        self.ty = Some(ty.to_owned());
+        self
+    }
+
+    pub fn with_attributes<'a>(
+        mut self,
+        values: impl IntoIterator<Item = (&'a str, &'a str)>,
+    ) -> Self {
+        self.attributes = Attributes(
+            values
+                .into_iter()
+                .map(|(a, b)| (a.to_owned(), b.to_owned()))
+                .collect::<Vec<(String, String)>>(),
+        );
+        self
+    }
+}
+
+impl Html for Button {
+    fn to_html_string(&self) -> String {
+        let ty = match self.ty {
+            Some(ref ty) => format!("type={}", ty),
+            None => "".to_owned(),
+        };
+        let name = match self.name {
+            Some(ref name) => format!("name={}", name),
+            None => "".to_owned(),
+        };
+        format!(
+            "<button {ty} {name} {attrs}>{label}</button>",
+            name = name,
+            label = self.label,
+            attrs = self.attributes.to_string()
+        )
+    }
+}

file-service/src/lib.rs

@@ -0,0 +1,5 @@
+mod store;
+
+pub use store::{
+    DeleteFileError, FileHandle, FileId, FileInfo, ReadFileError, Store, WriteFileError,
+};

file-service/src/main.rs

@@ -0,0 +1,174 @@
+extern crate log;
+
+use cookie::Cookie;
+use handlers::{file, handle_auth, handle_css, handle_delete, handle_upload, thumbnail};
+use std::{
+    collections::{HashMap, HashSet},
+    convert::Infallible,
+    net::{IpAddr, Ipv4Addr, SocketAddr},
+    path::PathBuf,
+    sync::Arc,
+};
+use tokio::sync::RwLock;
+use warp::{Filter, Rejection};
+
+mod handlers;
+mod html;
+mod pages;
+
+const MAX_UPLOAD: u64 = 15 * 1024 * 1024;
+
+use authdb::{AuthDB, AuthError, AuthToken, SessionToken, Username};
+
+use file_service::{
+    DeleteFileError, FileHandle, FileId, FileInfo, ReadFileError, Store, WriteFileError,
+};
+pub use handlers::handle_index;
+
+#[derive(Clone)]
+pub struct App {
+    authdb: Arc<RwLock<AuthDB>>,
+    store: Arc<RwLock<Store>>,
+}
+
+impl App {
+    pub fn new(authdb: AuthDB, store: Store) -> Self {
+        Self {
+            authdb: Arc::new(RwLock::new(authdb)),
+            store: Arc::new(RwLock::new(store)),
+        }
+    }
+
+    pub async fn authenticate(&self, token: AuthToken) -> Result<Option<SessionToken>, AuthError> {
+        self.authdb.read().await.authenticate(token).await
+    }
+
+    pub async fn validate_session(
+        &self,
+        token: SessionToken,
+    ) -> Result<Option<Username>, AuthError> {
+        self.authdb.read().await.validate_session(token).await
+    }
+
+    pub async fn list_files(&self) -> Result<HashSet<FileId>, ReadFileError> {
+        self.store.read().await.list_files()
+    }
+
+    pub async fn get_file(&self, id: &FileId) -> Result<FileHandle, ReadFileError> {
+        self.store.read().await.get_file(id)
+    }
+
+    pub async fn add_file(
+        &self,
+        filename: String,
+        content: Vec<u8>,
+    ) -> Result<FileHandle, WriteFileError> {
+        self.store.write().await.add_file(filename, content)
+    }
+
+    pub async fn delete_file(&self, id: FileId) -> Result<(), DeleteFileError> {
+        self.store.write().await.delete_file(&id)?;
+        Ok(())
+    }
+}
+
+fn with_app(app: App) -> impl Filter<Extract = (App,), Error = Infallible> + Clone {
+    warp::any().map(move || app.clone())
+}
+
+fn parse_cookies(cookie_str: &str) -> Result<HashMap<String, String>, cookie::ParseError> {
+    Cookie::split_parse(cookie_str)
+        .map(|c| c.map(|c| (c.name().to_owned(), c.value().to_owned())))
+        .collect::<Result<HashMap<String, String>, cookie::ParseError>>()
+}
+
+fn get_session_token(cookies: HashMap<String, String>) -> Option<SessionToken> {
+    cookies.get("session").cloned().map(SessionToken::from)
+}
+
+fn maybe_with_session() -> impl Filter<Extract = (Option<SessionToken>,), Error = Rejection> + Copy
+{
+    warp::any()
+        .and(warp::header::optional::<String>("cookie"))
+        .map(|cookie_str: Option<String>| match cookie_str {
+            Some(cookie_str) => parse_cookies(&cookie_str).ok().and_then(get_session_token),
+            None => None,
+        })
+}
+
+fn with_session() -> impl Filter<Extract = (SessionToken,), Error = Rejection> + Copy {
+    warp::any()
+        .and(warp::header::<String>("cookie"))
+        .and_then(|cookie_str: String| async move {
+            match parse_cookies(&cookie_str).ok().and_then(get_session_token) {
+                Some(session_token) => Ok(session_token),
+                None => Err(warp::reject()),
+            }
+        })
+}
+
+#[tokio::main]
+pub async fn main() {
+    pretty_env_logger::init();
+
+    let authdb = AuthDB::new(PathBuf::from(&std::env::var("AUTHDB").unwrap()))
+        .await
+        .unwrap();
+    let store = Store::new(PathBuf::from(&std::env::var("FILE_SHARE_DIR").unwrap()));
+
+    let app = App::new(authdb, store);
+
+    let log = warp::log("file_service");
+    let root = warp::path!()
+        .and(warp::get())
+        .and(with_app(app.clone()))
+        .and(maybe_with_session())
+        .then(handle_index);
+
+    let styles = warp::path!("css").and(warp::get()).then(handle_css);
+
+    let auth = warp::path!("auth")
+        .and(warp::post())
+        .and(with_app(app.clone()))
+        .and(warp::filters::body::form())
+        .then(handle_auth);
+
+    let upload_via_form = warp::path!("upload")
+        .and(warp::post())
+        .and(with_app(app.clone()))
+        .and(with_session())
+        .and(warp::multipart::form().max_length(MAX_UPLOAD))
+        .then(handle_upload);
+
+    let delete_via_form = warp::path!("delete" / String)
+        .and(warp::post())
+        .and(with_app(app.clone()))
+        .and(with_session())
+        .then(|id, app, token| handle_delete(app, token, FileId::from(id)));
+
+    let thumbnail = warp::path!(String / "tn")
+        .and(warp::get())
+        .and(warp::header::optional::<String>("if-none-match"))
+        .and(with_app(app.clone()))
+        .then(move |id, old_etags, app: App| thumbnail(app, id, old_etags));
+
+    let file = warp::path!(String)
+        .and(warp::get())
+        .and(warp::header::optional::<String>("if-none-match"))
+        .and(with_app(app.clone()))
+        .then(move |id, old_etags, app: App| file(app, id, old_etags));
+
+    let server = warp::serve(
+        root.or(styles)
+            .or(auth)
+            .or(upload_via_form)
+            .or(delete_via_form)
+            .or(thumbnail)
+            .or(file)
+            .with(log),
+    );
+
+    server
+        .run(SocketAddr::new(IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0)), 8002))
+        .await;
+}

file-service/src/pages.rs

@@ -0,0 +1,114 @@
+use crate::html::*;
+use build_html::{self, Container, ContainerType, Html, HtmlContainer};
+use file_service::{FileHandle, FileInfo, ReadFileError};
+
+pub fn auth(_message: Option<String>) -> build_html::HtmlPage {
+    build_html::HtmlPage::new()
+        .with_title("Sign In")
+        .with_stylesheet("/css")
+        .with_container(
+            Container::new(ContainerType::Div)
+                .with_attributes([("class", "authentication-page")])
+                .with_container(auth_form()),
+        )
+}
+
+fn auth_form() -> Container {
+    Container::default()
+        .with_attributes([("class", "card authentication-form")])
+        .with_html(
+            Form::new()
+                .with_path("/auth")
+                .with_method("post")
+                .with_container(
+                    Container::new(ContainerType::Div)
+                        .with_html(
+                            Input::new("password", "password")
+                                .with_id("for-token-input")
+                                .with_attributes([
+                                    ("size", "50"),
+                                    ("class", "authentication-form__input"),
+                                ]),
+                        )
+                        .with_html(
+                            Button::new("Sign In")
+                                .with_attributes([("class", "authentication-form__button")]),
+                        ),
+                ),
+        )
+}
+
+pub fn gallery(handles: Vec<Result<FileHandle, ReadFileError>>) -> build_html::HtmlPage {
+    let mut page = build_html::HtmlPage::new()
+        .with_title("Gallery")
+        .with_stylesheet("/css")
+        .with_container(
+            Container::new(ContainerType::Div)
+                .with_attributes([("class", "gallery-page")])
+                .with_header(1, "Gallery")
+                .with_html(upload_form()),
+        );
+
+    let mut gallery = Container::new(ContainerType::Div).with_attributes([("class", "gallery")]);
+    for handle in handles {
+        let container = match handle {
+            Ok(ref handle) => thumbnail(&handle.info),
+            Err(err) => Container::new(ContainerType::Div)
+                .with_attributes(vec![("class", "file")])
+                .with_paragraph(format!("{:?}", err)),
+        };
+        gallery.add_container(container);
+    }
+    page.add_container(gallery);
+    page
+}
+
+pub fn upload_form() -> Form {
+    Form::new()
+        .with_path("/upload")
+        .with_method("post")
+        .with_encoding("multipart/form-data")
+        .with_container(
+            Container::new(ContainerType::Div)
+                .with_attributes([("class", "card upload-form")])
+                .with_html(Input::new("file", "file").with_attributes([
+                    ("id", "for-selector-input"),
+                    ("placeholder", "select file"),
+                    ("class", "upload-form__selector"),
+                ]))
+                .with_html(
+                    Button::new("Upload file")
+                        .with_attributes([("class", "upload-form__button")])
+                        .with_type("submit"),
+                ),
+        )
+}
+
+pub fn thumbnail(info: &FileInfo) -> Container {
+    Container::new(ContainerType::Div)
+        .with_attributes(vec![("class", "card thumbnail")])
+        .with_html(
+            Container::new(ContainerType::Div).with_link(
+                format!("/{}", *info.id),
+                Container::default()
+                    .with_attributes([("class", "thumbnail")])
+                    .with_image(format!("{}/tn", *info.id), "test data")
+                    .to_html_string(),
+            ),
+        )
+        .with_html(
+            Container::new(ContainerType::Div)
+                .with_html(
+                    Container::new(ContainerType::UnorderedList)
+                        .with_attributes(vec![("class", "thumbnail__metadata")])
+                        .with_html(info.name.clone())
+                        .with_html(format!("{}", info.created.format("%Y-%m-%d"))),
+                )
+                .with_html(
+                    Form::new()
+                        .with_path(&format!("/delete/{}", *info.id))
+                        .with_method("post")
+                        .with_html(Button::new("Delete")),
+                ),
+        )
+}

file-service/src/store/filehandle.rs

@@ -0,0 +1,299 @@
+use super::{fileinfo::FileInfo, FileId, ReadFileError, WriteFileError};
+use chrono::prelude::*;
+use hex_string::HexString;
+use image::imageops::FilterType;
+use sha2::{Digest, Sha256};
+use std::{
+    convert::TryFrom,
+    io::{Read, Write},
+    path::{Path, PathBuf},
+};
+use thiserror::Error;
+use uuid::Uuid;
+
+#[derive(Debug, Error)]
+pub enum PathError {
+    #[error("path cannot be derived from input")]
+    InvalidPath,
+}
+
+#[derive(Clone, Debug)]
+pub struct PathResolver {
+    base: PathBuf,
+    id: FileId,
+    extension: String,
+}
+
+impl PathResolver {
+    pub fn new(base: &Path, id: FileId, extension: String) -> Self {
+        Self {
+            base: base.to_owned(),
+            id,
+            extension,
+        }
+    }
+
+    pub fn metadata_path_by_id(base: &Path, id: FileId) -> PathBuf {
+        let mut path = base.to_path_buf();
+        path.push(PathBuf::from(id.clone()));
+        path.set_extension("json");
+        path
+    }
+
+    pub fn id(&self) -> FileId {
+        self.id.clone()
+    }
+
+    pub fn file_path(&self) -> PathBuf {
+        let mut path = self.base.clone();
+        path.push(PathBuf::from(self.id.clone()));
+        path.set_extension(self.extension.clone());
+        path
+    }
+
+    pub fn metadata_path(&self) -> PathBuf {
+        let mut path = self.base.clone();
+        path.push(PathBuf::from(self.id.clone()));
+        path.set_extension("json");
+        path
+    }
+
+    pub fn thumbnail_path(&self) -> PathBuf {
+        let mut path = self.base.clone();
+        path.push(PathBuf::from(self.id.clone()));
+        path.set_extension(format!("tn.{}", self.extension));
+        path
+    }
+}
+
+impl TryFrom<String> for PathResolver {
+    type Error = PathError;
+    fn try_from(s: String) -> Result<Self, Self::Error> {
+        PathResolver::try_from(s.as_str())
+    }
+}
+
+impl TryFrom<&str> for PathResolver {
+    type Error = PathError;
+    fn try_from(s: &str) -> Result<Self, Self::Error> {
+        PathResolver::try_from(Path::new(s))
+    }
+}
+
+impl TryFrom<PathBuf> for PathResolver {
+    type Error = PathError;
+    fn try_from(path: PathBuf) -> Result<Self, Self::Error> {
+        PathResolver::try_from(path.as_path())
+    }
+}
+
+impl TryFrom<&Path> for PathResolver {
+    type Error = PathError;
+    fn try_from(path: &Path) -> Result<Self, Self::Error> {
+        Ok(Self {
+            base: path
+                .parent()
+                .map(|s| s.to_owned())
+                .ok_or(PathError::InvalidPath)?,
+            id: path
+                .file_stem()
+                .and_then(|s| s.to_str().map(FileId::from))
+                .ok_or(PathError::InvalidPath)?,
+            extension: path
+                .extension()
+                .and_then(|s| s.to_str().map(|s| s.to_owned()))
+                .ok_or(PathError::InvalidPath)?,
+        })
+    }
+}
+
+/// One file in the database, complete with the path of the file and information about the
+/// thumbnail of the file.
+#[derive(Debug)]
+pub struct FileHandle {
+    pub id: FileId,
+    pub path: PathResolver,
+    pub info: FileInfo,
+}
+
+impl FileHandle {
+    /// Create a new entry in the database
+    pub fn new(filename: String, root: PathBuf) -> Result<Self, WriteFileError> {
+        let id = FileId::from(Uuid::new_v4().hyphenated().to_string());
+        let path = PathBuf::from(filename);
+
+        let name = path
+            .file_stem()
+            .and_then(|s| s.to_str().map(|s| s.to_owned()))
+            .ok_or(WriteFileError::InvalidPath)?;
+        let extension = path
+            .extension()
+            .and_then(|s| s.to_str().map(|s| s.to_owned()))
+            .ok_or(WriteFileError::InvalidPath)?;
+        let path = PathResolver {
+            base: root.clone(),
+            id: id.clone(),
+            extension: extension.clone(),
+        };
+
+        let file_type = mime_guess::from_ext(&extension)
+            .first_or_text_plain()
+            .essence_str()
+            .to_owned();
+
+        let info = FileInfo {
+            id: id.clone(),
+            name,
+            size: 0,
+            created: Utc::now(),
+            file_type,
+            hash: "".to_owned(),
+            extension,
+        };
+
+        let mut md_file = std::fs::File::create(path.metadata_path())?;
+        let _ = md_file.write(&serde_json::to_vec(&info)?)?;
+
+        Ok(Self { id, path, info })
+    }
+
+    pub fn load(id: &FileId, root: &Path) -> Result<Self, ReadFileError> {
+        let info = FileInfo::load(PathResolver::metadata_path_by_id(root, id.clone()))?;
+        let resolver = PathResolver::new(root, id.clone(), info.extension.clone());
+        Ok(Self {
+            id: info.id.clone(),
+            path: resolver,
+            info,
+        })
+    }
+
+    pub fn set_content(&mut self, content: Vec<u8>) -> Result<(), WriteFileError> {
+        let mut content_file = std::fs::File::create(self.path.file_path())?;
+        let byte_count = content_file.write(&content)?;
+        self.info.size = byte_count;
+        self.info.hash = self.hash_content(&content).as_string();
+
+        let mut md_file = std::fs::File::create(self.path.metadata_path())?;
+        let _ = md_file.write(&serde_json::to_vec(&self.info)?)?;
+
+        self.write_thumbnail()?;
+
+        Ok(())
+    }
+
+    pub fn content(&self) -> Result<Vec<u8>, ReadFileError> {
+        load_content(&self.path.file_path())
+    }
+
+    pub fn thumbnail(&self) -> Result<Vec<u8>, ReadFileError> {
+        load_content(&self.path.thumbnail_path())
+    }
+
+    fn hash_content(&self, data: &Vec<u8>) -> HexString {
+        HexString::from_bytes(&Sha256::digest(data).to_vec())
+    }
+
+    fn write_thumbnail(&self) -> Result<(), WriteFileError> {
+        let img = image::open(self.path.file_path())?;
+        let tn = img.resize(640, 640, FilterType::Nearest);
+        tn.save(self.path.thumbnail_path())?;
+        Ok(())
+    }
+
+    pub fn delete(self) {
+        let _ = std::fs::remove_file(self.path.thumbnail_path());
+        let _ = std::fs::remove_file(self.path.file_path());
+        let _ = std::fs::remove_file(self.path.metadata_path());
+    }
+}
+
+fn load_content(path: &Path) -> Result<Vec<u8>, ReadFileError> {
+    let mut buf = Vec::new();
+    let mut file = std::fs::File::open(path)?;
+    file.read_to_end(&mut buf)?;
+    Ok(buf)
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use std::{convert::TryFrom, path::PathBuf};
+    use tempdir::TempDir;
+
+    #[test]
+    fn paths() {
+        let resolver = PathResolver::try_from("path/82420255-d3c8-4d90-a582-f94be588c70c.png")
+            .expect("to have a valid path");
+
+        assert_eq!(
+            resolver.file_path(),
+            PathBuf::from("path/82420255-d3c8-4d90-a582-f94be588c70c.png")
+        );
+        assert_eq!(
+            resolver.metadata_path(),
+            PathBuf::from("path/82420255-d3c8-4d90-a582-f94be588c70c.json")
+        );
+        assert_eq!(
+            resolver.thumbnail_path(),
+            PathBuf::from("path/82420255-d3c8-4d90-a582-f94be588c70c.tn.png")
+        );
+    }
+
+    #[test]
+    fn it_creates_file_info() {
+        let tmp = TempDir::new("var").unwrap();
+        let handle =
+            FileHandle::new("rawr.png".to_owned(), PathBuf::from(tmp.path())).expect("to succeed");
+        assert_eq!(handle.info.name, "rawr");
+        assert_eq!(handle.info.size, 0);
+        assert_eq!(handle.info.file_type, "image/png");
+        assert_eq!(handle.info.extension, "png");
+    }
+
+    #[test]
+    fn it_opens_a_file() {
+        let tmp = TempDir::new("var").unwrap();
+        FileHandle::new("rawr.png".to_owned(), PathBuf::from(tmp.path())).expect("to succeed");
+    }
+
+    #[test]
+    fn it_deletes_a_file() {
+        let tmp = TempDir::new("var").unwrap();
+        let f =
+            FileHandle::new("rawr.png".to_owned(), PathBuf::from(tmp.path())).expect("to succeed");
+        f.delete();
+    }
+
+    #[test]
+    fn it_can_return_a_thumbnail() {
+        let tmp = TempDir::new("var").unwrap();
+        let _ =
+            FileHandle::new("rawr.png".to_owned(), PathBuf::from(tmp.path())).expect("to succeed");
+        /*
+        assert_eq!(
+            f.thumbnail(),
+            Thumbnail {
+                id: String::from("rawr.png"),
+                root: PathBuf::from("var/"),
+            },
+        );
+        */
+    }
+
+    #[test]
+    fn it_can_return_a_file_stream() {
+        let tmp = TempDir::new("var").unwrap();
+        let _ =
+            FileHandle::new("rawr.png".to_owned(), PathBuf::from(tmp.path())).expect("to succeed");
+        // f.stream().expect("to succeed");
+    }
+
+    #[test]
+    fn it_raises_an_error_when_file_not_found() {
+        let tmp = TempDir::new("var").unwrap();
+        match FileHandle::load(&FileId::from("rawr"), tmp.path()) {
+            Err(ReadFileError::FileNotFound(_)) => assert!(true),
+            _ => assert!(false),
+        }
+    }
+}

file-service/src/store/fileinfo.rs

@@ -0,0 +1,76 @@
+use crate::FileId;
+
+use super::{ReadFileError, WriteFileError};
+use chrono::prelude::*;
+use serde::{Deserialize, Serialize};
+use std::{
+    io::{Read, Write},
+    path::PathBuf,
+};
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct FileInfo {
+    pub id: FileId,
+
+    // Early versions of the application didn't support a name field, so it is possible that
+    // metadata won't contain the name. We can just default to an empty string when loading the
+    // metadata, as all future versions will require a filename when the file gets uploaded.
+    #[serde(default)]
+    pub name: String,
+    pub size: usize,
+    pub created: DateTime<Utc>,
+    pub file_type: String,
+    pub hash: String,
+    pub extension: String,
+}
+
+impl FileInfo {
+    pub fn load(path: PathBuf) -> Result<Self, ReadFileError> {
+        let mut content: Vec<u8> = Vec::new();
+        let mut file =
+            std::fs::File::open(path.clone()).map_err(|_| ReadFileError::FileNotFound(path))?;
+        file.read_to_end(&mut content)?;
+        let js = serde_json::from_slice(&content)?;
+
+        Ok(js)
+    }
+
+    pub fn save(&self, path: PathBuf) -> Result<(), WriteFileError> {
+        let ser = serde_json::to_string(self).unwrap();
+        let mut file = std::fs::File::create(path)?;
+        let _ = file.write(ser.as_bytes())?;
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use crate::store::FileId;
+    use tempdir::TempDir;
+
+    #[test]
+    fn it_saves_and_loads_metadata() {
+        let tmp = TempDir::new("var").unwrap();
+        let created = Utc::now();
+
+        let info = FileInfo {
+            id: FileId("temp-id".to_owned()),
+            name: "test-image".to_owned(),
+            size: 23777,
+            created,
+            file_type: "image/png".to_owned(),
+            hash: "abcdefg".to_owned(),
+            extension: "png".to_owned(),
+        };
+        let mut path = tmp.path().to_owned();
+        path.push(&PathBuf::from(info.id.clone()));
+        info.save(path.clone()).unwrap();
+
+        let info_ = FileInfo::load(path).unwrap();
+        assert_eq!(info_.size, 23777);
+        assert_eq!(info_.created, info.created);
+        assert_eq!(info_.file_type, "image/png");
+        assert_eq!(info_.hash, info.hash);
+    }
+}

file-service/src/store/mod.rs

@@ -0,0 +1,269 @@
+use serde::{Deserialize, Serialize};
+use std::{collections::HashSet, ops::Deref, path::PathBuf};
+use thiserror::Error;
+
+mod filehandle;
+mod fileinfo;
+
+pub use filehandle::FileHandle;
+pub use fileinfo::FileInfo;
+
+#[derive(Debug, Error)]
+pub enum WriteFileError {
+    #[error("root file path does not exist")]
+    RootNotFound,
+
+    #[error("permission denied")]
+    PermissionDenied,
+
+    #[error("invalid path")]
+    InvalidPath,
+
+    #[error("no metadata available")]
+    NoMetadata,
+
+    #[error("file could not be loaded")]
+    LoadError(#[from] ReadFileError),
+
+    #[error("image conversion failed")]
+    ImageError(#[from] image::ImageError),
+
+    #[error("JSON error")]
+    JSONError(#[from] serde_json::error::Error),
+
+    #[error("IO error")]
+    IOError(#[from] std::io::Error),
+}
+
+#[derive(Debug, Error)]
+pub enum ReadFileError {
+    #[error("file not found")]
+    FileNotFound(PathBuf),
+
+    #[error("path is not a file")]
+    NotAFile,
+
+    #[error("permission denied")]
+    PermissionDenied,
+
+    #[error("JSON error")]
+    JSONError(#[from] serde_json::error::Error),
+
+    #[error("IO error")]
+    IOError(#[from] std::io::Error),
+}
+
+#[derive(Debug, Error)]
+pub enum DeleteFileError {
+    #[error("file not found")]
+    FileNotFound(PathBuf),
+
+    #[error("metadata path is not a file")]
+    NotAFile,
+
+    #[error("cannot read metadata")]
+    PermissionDenied,
+
+    #[error("invalid metadata path")]
+    MetadataParseError(serde_json::error::Error),
+
+    #[error("IO error")]
+    IOError(#[from] std::io::Error),
+}
+
+impl From<ReadFileError> for DeleteFileError {
+    fn from(err: ReadFileError) -> Self {
+        match err {
+            ReadFileError::FileNotFound(path) => DeleteFileError::FileNotFound(path),
+            ReadFileError::NotAFile => DeleteFileError::NotAFile,
+            ReadFileError::PermissionDenied => DeleteFileError::PermissionDenied,
+            ReadFileError::JSONError(err) => DeleteFileError::MetadataParseError(err),
+            ReadFileError::IOError(err) => DeleteFileError::IOError(err),
+        }
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, Hash, PartialEq, Eq)]
+pub struct FileId(String);
+
+impl From<String> for FileId {
+    fn from(s: String) -> Self {
+        Self(s)
+    }
+}
+
+impl From<&str> for FileId {
+    fn from(s: &str) -> Self {
+        Self(s.to_owned())
+    }
+}
+
+impl From<FileId> for PathBuf {
+    fn from(s: FileId) -> Self {
+        Self::from(&s)
+    }
+}
+
+impl From<&FileId> for PathBuf {
+    fn from(s: &FileId) -> Self {
+        let FileId(s) = s;
+        Self::from(s)
+    }
+}
+
+impl Deref for FileId {
+    type Target = String;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+pub trait FileRoot {
+    fn root(&self) -> PathBuf;
+}
+
+pub struct Context(PathBuf);
+
+impl FileRoot for Context {
+    fn root(&self) -> PathBuf {
+        self.0.clone()
+    }
+}
+
+pub struct Store {
+    files_root: PathBuf,
+}
+
+impl Store {
+    pub fn new(files_root: PathBuf) -> Self {
+        Self { files_root }
+    }
+
+    pub fn list_files(&self) -> Result<HashSet<FileId>, ReadFileError> {
+        let paths = std::fs::read_dir(&self.files_root)?;
+        let info_files = paths
+            .into_iter()
+            .filter_map(|path| {
+                let path_ = path.unwrap().path();
+                if path_.extension().and_then(|s| s.to_str()) == Some("json") {
+                    let stem = path_.file_stem().and_then(|s| s.to_str()).unwrap();
+                    Some(FileId::from(stem))
+                } else {
+                    None
+                }
+            })
+            .collect::<HashSet<FileId>>();
+        Ok(info_files)
+    }
+
+    pub fn add_file(
+        &mut self,
+        filename: String,
+        content: Vec<u8>,
+    ) -> Result<FileHandle, WriteFileError> {
+        let mut file = FileHandle::new(filename, self.files_root.clone())?;
+        file.set_content(content)?;
+        Ok(file)
+    }
+
+    pub fn get_file(&self, id: &FileId) -> Result<FileHandle, ReadFileError> {
+        FileHandle::load(id, &self.files_root)
+    }
+
+    pub fn delete_file(&mut self, id: &FileId) -> Result<(), DeleteFileError> {
+        let handle = FileHandle::load(id, &self.files_root)?;
+        handle.delete();
+        Ok(())
+    }
+
+    pub fn get_metadata(&self, id: &FileId) -> Result<FileInfo, ReadFileError> {
+        let mut path = self.files_root.clone();
+        path.push(PathBuf::from(id));
+        path.set_extension("json");
+        FileInfo::load(path)
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use cool_asserts::assert_matches;
+    use std::{collections::HashSet, io::Read};
+    use tempdir::TempDir;
+
+    fn with_file<F>(test_fn: F)
+    where
+        F: FnOnce(Store, FileId, TempDir),
+    {
+        let tmp = TempDir::new("var").unwrap();
+
+        let mut buf = Vec::new();
+        let mut file = std::fs::File::open("fixtures/rawr.png").unwrap();
+        file.read_to_end(&mut buf).unwrap();
+
+        let mut store = Store::new(PathBuf::from(tmp.path()));
+        let file_record = store.add_file("rawr.png".to_owned(), buf).unwrap();
+
+        test_fn(store, file_record.id, tmp);
+    }
+
+    #[test]
+    fn adds_files() {
+        with_file(|store, id, tmp| {
+            let file = store.get_file(&id).expect("to retrieve the file");
+
+            assert_eq!(file.content().map(|file| file.len()).unwrap(), 23777);
+
+            assert!(tmp.path().join(&(*id)).with_extension("png").exists());
+            assert!(tmp.path().join(&(*id)).with_extension("json").exists());
+            assert!(tmp.path().join(&(*id)).with_extension("tn.png").exists());
+        });
+    }
+
+    #[test]
+    fn sets_up_metadata_for_file() {
+        with_file(|store, id, tmp| {
+            assert!(tmp.path().join(&(*id)).with_extension("png").exists());
+            let info = store.get_metadata(&id).expect("to retrieve the metadata");
+
+            assert_matches!(info, FileInfo { size, file_type, hash, extension, .. } => {
+                assert_eq!(size, 23777);
+                assert_eq!(file_type, "image/png");
+                assert_eq!(hash, "b6cd35e113b95d62f53d9cbd27ccefef47d3e324aef01a2db6c0c6d3a43c89ee".to_owned());
+                assert_eq!(extension, "png".to_owned());
+            });
+        });
+    }
+
+    /*
+    #[test]
+    fn sets_up_thumbnail_for_file() {
+        with_file(|store, id| {
+            let (_, thumbnail) = store.get_thumbnail(&id).expect("to retrieve the thumbnail");
+            assert_eq!(thumbnail.content().map(|file| file.len()).unwrap(), 48869);
+        });
+    }
+    */
+
+    #[test]
+    fn deletes_associated_files() {
+        with_file(|mut store, id, tmp| {
+            store.delete_file(&id).expect("file to be deleted");
+
+            assert!(!tmp.path().join(&(*id)).with_extension("png").exists());
+            assert!(!tmp.path().join(&(*id)).with_extension("json").exists());
+            assert!(!tmp.path().join(&(*id)).with_extension("tn.png").exists());
+        });
+    }
+
+    #[test]
+    fn lists_files_in_the_db() {
+        with_file(|store, id, _| {
+            let resolvers = store.list_files().expect("file listing to succeed");
+            let ids = resolvers.into_iter().collect::<HashSet<FileId>>();
+
+            assert_eq!(ids.len(), 1);
+            assert!(ids.contains(&id));
+        });
+    }
+}

file-service/src/store/thumbnail.rs

@@ -0,0 +1,91 @@
+use super::{ReadFileError, WriteFileError};
+use image::imageops::FilterType;
+use std::{
+    fs::remove_file,
+    io::Read,
+    path::{Path, PathBuf},
+};
+
+#[derive(Clone, Debug, PartialEq)]
+pub struct Thumbnail {
+    pub path: PathBuf,
+}
+
+impl Thumbnail {
+    pub fn open(
+        origin_path: PathBuf,
+        thumbnail_path: PathBuf,
+    ) -> Result<Thumbnail, WriteFileError> {
+        let s = Thumbnail {
+            path: PathBuf::from(thumbnail_path),
+        };
+
+        if !s.path.exists() {
+            let img = image::open(&origin_path)?;
+            let tn = img.resize(640, 640, FilterType::Nearest);
+            tn.save(&s.path)?;
+        }
+
+        Ok(s)
+    }
+
+    pub fn load(path: PathBuf) -> Result<Thumbnail, ReadFileError> {
+        let s = Thumbnail { path: path.clone() };
+
+        if !s.path.exists() {
+            return Err(ReadFileError::FileNotFound(path));
+        }
+
+        Ok(s)
+    }
+
+    /*
+    pub fn from_path(path: &Path) -> Result<Thumbnail, ReadFileError> {
+        let id = path
+            .file_name()
+            .map(|s| String::from(s.to_string_lossy()))
+            .ok_or(ReadFileError::NotAnImage(PathBuf::from(path)))?;
+
+        let path = path
+            .parent()
+            .ok_or(ReadFileError::FileNotFound(PathBuf::from(path)))?;
+
+        Thumbnail::open(&id, root)
+    }
+    */
+
+    /*
+    pub fn stream(&self) -> Result<std::fs::File, ReadFileError> {
+        std::fs::File::open(self.path.clone()).map_err(|err| {
+            if err.kind() == std::io::ErrorKind::NotFound {
+                ReadFileError::FileNotFound
+            } else {
+                ReadFileError::from(err)
+            }
+        })
+    }
+    */
+
+    /*
+    pub fn delete(self) -> Result<(), WriteFileError> {
+        remove_file(self.path).map_err(WriteFileError::from)
+    }
+    */
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use crate::store::utils::FileCleanup;
+
+    #[test]
+    fn it_creates_a_thumbnail_if_one_does_not_exist() {
+        let _ = FileCleanup(PathBuf::from("var/rawr.tn.png"));
+        let _ = Thumbnail::open(
+            PathBuf::from("fixtures/rawr.png"),
+            PathBuf::from("var/rawr.tn.png"),
+        )
+        .expect("thumbnail open must work");
+        assert!(Path::new("var/rawr.tn.png").is_file());
+    }
+}

file-service/templates/file.html

@@ -0,0 +1,15 @@
+<html>
+
+<head>
+    <title> {{title}} </title>
+    <link href="/css" rel="stylesheet" type="text/css" media="screen" />
+    <script src="/script"></script>
+</head>
+
+<body>
+
+    <a href="/file/{{id}}"><img src="/tn/{{id}}" /></a>
+
+</body>
+
+</html>

file-service/templates/index.html

@@ -0,0 +1,54 @@
+<html>
+
+<head>
+    <title> Admin list of files </title>
+    <link href="/css" rel="stylesheet" type="text/css" media="screen" />
+    <script src="/script"></script>
+</head>
+
+<body>
+    <h1> Admin list of files </h1>
+
+    <div class="uploadform">
+        <form action="/" method="post" enctype="multipart/form-data">
+            <div id="file-selector">
+                <input type="file" name="file" id="file-selector-input" />
+                <label for="file-selector-input" onclick="selectFile('file-selector')">Select a file</label>
+            </div>
+            <input type="submit" value="Upload file" />
+        </form>
+    </div>
+
+    <div class="files">
+        {{#files}}
+        <div class="file">
+            {{#error}}
+            <div>
+                <p> {{error}} </p>
+            </div>
+            {{/error}}
+
+            {{#file}}
+            <div class="thumbnail">
+                <a href="/file/{{id}}"><img src="/tn/{{id}}" /></a>
+            </div>
+            <div>
+                <ul>
+                    <li> {{date}} </li>
+                    <li> {{type_}} </li>
+                    <li> {{size}} </li>
+                </ul>
+                <div>
+                    <form action="/{{id}}" method="post">
+                        <input type="hidden" name="_method" value="delete" />
+                        <input type="submit" value="Delete" />
+                    </form>
+                </div>
+            </div>
+            {{/file}}
+        </div>
+        {{/files}}
+    </div>
+</body>
+
+</html>

file-service/templates/script.js

@@ -0,0 +1,10 @@
+const selectFile = (selectorId) => {
+    console.log("wide arrow functions work: " + selectorId);
+    const input = document.querySelector("#" + selectorId + " input[type='file']")
+    const label = document.querySelector("#" + selectorId + " label")
+    input.addEventListener("change", (e) => {
+        if (input.files.length > 0) {
+            label.innerHTML = input.files[0].name
+        }
+    })
+}

file-service/templates/style.css

@@ -0,0 +1,186 @@
+:root {
+    --main-bg-color: #e5f0fc;
+    --fg-color: #449dfc;
+
+    --space-small: 4px;
+    --space-medium: 8px;
+    --space-large: 12px;
+
+    --hover-low: 4px 4px 4px gray;
+}
+
+body {
+    font-family: 'Ariel', sans-serif;
+    background-color: var(--main-bg-color);
+}
+
+.card {
+    border: 1px solid black;
+    border-radius: 5px;
+    box-shadow: var(--hover-low);
+    margin: var(--space-large);
+    padding: var(--space-medium);
+
+}
+
+.authentication-page {
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+    height: 200px;
+    margin: 8px;
+}
+
+.authentication-form {
+}
+
+.authentication-form__label {
+    margin: var(--space-small);
+}
+
+.authentication-form__input {
+    margin: var(--space-small);
+}
+
+.gallery-page {
+    display: flex;
+    flex-direction: column;
+}
+
+.upload-form {
+    display: flex;
+    flex-direction: column;
+}
+
+.upload-form__selector {
+    margin: var(--space-small);
+}
+
+.upload-form__button {
+    margin: var(--space-small);
+}
+
+.gallery {
+    display: flex;
+    flex-wrap: wrap;
+}
+
+.thumbnail {
+    width: 300px;
+    display: flex;
+    flex-direction: column;
+    justify-content: space-between;
+}
+
+.thumbnail__image {
+    max-width: 100%;
+    border: none;
+}
+
+.thumbnail__metadata {
+    list-style: none;
+}
+
+/*
+[type="submit"] {
+    border-radius: 1em;
+    margin: 1em;
+    padding: 1em;
+}
+
+.uploadform {
+}
+*/
+
+    /*
+[type="file"] {
+    border: 0;
+    clip: rect(0, 0, 0, 0);
+    height: 1px;
+    overflow: hidden;
+    padding: 0;
+    position: absolute !important;
+    white-space: nowrap;
+    width: 1px;
+}
+        
+[type="file"] + label {
+    background-color: rgb(0, 86, 112);
+    border-radius: 1em;
+    color: #fff;
+    cursor: pointer;
+    display: inline-block;
+    padding: 1em;
+    margin: 1em;
+    transition: background-color 0.3s;
+}
+                           
+[type="file"]:focus + label,
+[type="file"] + label:hover {
+    background-color: #67b0ff;
+}
+
+[type="file"]:focus + label {
+    outline: 1px dotted #000;
+    outline: -webkit-focus-ring-color auto 5px;
+}
+*/
+
+@media screen and (max-width: 1080px) { /* This is the screen width of a OnePlus 8 */
+    body {
+        font-size: xx-large;
+    }
+
+    .authentication-form {
+        width: 100%;
+        display: flex;
+        flex-direction: column;
+    }
+
+    .authentication-form__input {
+        font-size: x-large;
+    }
+
+    .authentication-form__button {
+        font-size: x-large;
+    }
+
+    .upload-form__selector {
+        font-size: larger;
+    }
+
+    .upload-form__button {
+        font-size: larger;
+    }
+
+    .thumbnail {
+        width: 100%;
+    }
+
+    /*
+    [type="submit"] {
+        font-size: xx-large;
+        width: 100%;
+    }
+
+    .uploadform {
+        display: flex;
+    }
+
+    [type="file"] + label {
+        width: 100%;
+    }
+
+    .thumbnail {
+        max-width: 100%;
+        margin: 1em;
+    }
+
+    .file {
+        display: flex;
+        flex-direction: column;
+        width: 100%;
+    }
+    */
+}

fitnesstrax/app/Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "fitnesstrax"
+version = "0.6.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+adw             = { version = "0.5", package = "libadwaita", features = [ "v1_4" ] }
+async-channel   = { version = "2.1" }
+async-trait     = { version = "0.1" }
+chrono          = { version = "0.4" }
+chrono-tz       = { version = "0.8" }
+dimensioned     = { version = "0.8", features = [ "serde" ] }
+emseries        = { path = "../../emseries" }
+ft-core         = { path = "../core" }
+gio             = { version = "0.18" }
+glib            = { version = "0.18" }
+gdk             = { version = "0.7", package = "gdk4" }
+gtk             = { version = "0.7", package = "gtk4", features = [ "v4_10" ] }
+thiserror       = { version = "1.0" }
+tokio           = { version = "1.34", features = [ "full" ] }
+
+[build-dependencies]
+glib-build-tools = "0.18"
+