Add a lot of documentation to the Flow library

Set up the app structure and the file scanner
Rename and rework the error tools to Flow
2023-02-11 12:55:00 -05:00 · 2023-02-11 12:55:00 -05:00 · 2023-02-11 12:55:00 -05:00 · 2023-02-11 12:54:58 -05:00 · 2023-02-11 12:53:55 -05:00 · 2023-02-11 12:53:54 -05:00
53 changed files with 14970 additions and 24 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,2 +1,4 @@
 target
 .direnv/
+node_modules
+dist
--- a/674
+++ b/674
@ -0,0 +1,674 @@
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+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program 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.
+
+    This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
--- a/changeset/Cargo.toml
+++ b/changeset/Cargo.toml
@ -2,6 +2,8 @@
 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

--- a/changeset/src/lib.rs
+++ b/changeset/src/lib.rs
@ -1,3 +1,15 @@
+/*
+Copyright 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/>.
+*/
+
 use std::{
    collections::{HashMap, HashSet},
    hash::Hash,
--- a/coordinates/Cargo.toml
+++ b/coordinates/Cargo.toml
@ -2,6 +2,8 @@
 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

--- a/coordinates/src/bin/default_map.rs
+++ b/coordinates/src/bin/default_map.rs
@ -1,3 +1,15 @@
+/*
+Copyright 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/>.
+*/
+
 use coordinates::hex_map;
 use std::path::PathBuf;

--- a/coordinates/src/hex.rs
+++ b/coordinates/src/hex.rs
@ -1,3 +1,15 @@
+/*
+Copyright 2022-2023, 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/>.
+*/
+
 /// Ĉi-tiu modulo enhavas la elementojn por kub-koordinato.
 ///
 /// This code is based on https://www.redblobgames.com/grids/hexagons/
--- a/emseries/Cargo.toml
+++ b/emseries/Cargo.toml
@ -3,7 +3,8 @@ name = "emseries"
 version = "0.5.1"
 authors = ["Savanni D'Gerinel <savanni@luminescent-dreams.com>"]
 description = "an Embedded Time Series database"
-license = "BSD-3-Clause"
+license = "GPL-3.0-only"
+license-file = "../COPYING"
 documentation = "https://docs.rs/emseries"
 homepage = "https://github.com/luminescent-dreams/emseries"
 repository = "https://github.com/luminescent-dreams/emseries"
--- a/emseries/src/criteria.rs
+++ b/emseries/src/criteria.rs
@ -1,3 +1,15 @@
+/*
+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/>.
+*/
+
 use date_time_tz::DateTimeTz;
 use types::Recordable;

@ -8,14 +20,12 @@ pub trait Criteria {
    fn apply<T: Recordable>(&self, record: &T) -> bool;
 }

-
 /// Specify two criteria that must both be matched.
 pub struct And<A: Criteria, B: Criteria> {
    pub lside: A,
    pub rside: B,
 }

-
 impl<A, B> Criteria for And<A, B>
 where
    A: Criteria,
@ -26,14 +36,12 @@ where
    }
 }

-
 /// Specify two criteria, either of which may be matched.
 pub struct Or<A: Criteria, B: Criteria> {
    pub lside: A,
    pub rside: B,
 }

-
 /// 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 {
@ -41,7 +49,6 @@ pub struct StartTime {
    pub incl: bool,
 }

-
 impl Criteria for StartTime {
    fn apply<T: Recordable>(&self, record: &T) -> bool {
        if self.incl {
@ -52,7 +59,6 @@ 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 {
@ -60,7 +66,6 @@ pub struct EndTime {
    pub incl: bool,
 }

-
 impl Criteria for EndTime {
    fn apply<T: Recordable>(&self, record: &T) -> bool {
        if self.incl {
@ -71,7 +76,6 @@ impl Criteria for EndTime {
    }
 }

-
 /// Specify a list of tags that must exist on the record.
 pub struct Tags {
    pub tags: Vec<String>,
@ -80,13 +84,10 @@ pub struct Tags {
 impl Criteria for Tags {
    fn apply<T: Recordable>(&self, record: &T) -> bool {
        let record_tags = record.tags();
-        self.tags
-            .iter()
-            .all(|v| record_tags.contains(v))
+        self.tags.iter().all(|v| record_tags.contains(v))
    }
 }

-
 /// Specify a criteria that searches for records matching an exact time.
 pub fn exact_time(time: DateTimeTz) -> And<StartTime, EndTime> {
    And {
@ -98,7 +99,6 @@ 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,
--- a/emseries/src/date_time_tz.rs
+++ b/emseries/src/date_time_tz.rs
@ -1,3 +1,15 @@
+/*
+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;

--- a/emseries/src/interval.rs
+++ b/emseries/src/interval.rs
@ -1,3 +1,15 @@
+/*
+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/>.
+*/
+
 // NOTE: this module is a candidate for extraction into its own crate, or should be replaced with
 // an existing crate.

--- a/emseries/src/lib.rs
+++ b/emseries/src/lib.rs
@ -1,3 +1,15 @@
+/*
+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/>.
+*/
+
 /*! An Embedded Time Series Database

 This library provides a low-intensity time series database meant to be embedded inside of an
--- a/emseries/src/series.rs
+++ b/emseries/src/series.rs
@ -1,3 +1,15 @@
+/*
+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 serde;
 extern crate serde_json;
 extern crate uuid;
--- a/emseries/src/types.rs
+++ b/emseries/src/types.rs
@ -1,3 +1,15 @@
+/*
+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/>.
+*/
+
 use date_time_tz::DateTimeTz;
 use serde::de::DeserializeOwned;
 use serde::ser::Serialize;
--- a/emseries/tests/test_io.rs
+++ b/emseries/tests/test_io.rs
@ -1,3 +1,15 @@
+/*
+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/>.
+*/
+
 #[macro_use]
 extern crate serde_derive;

--- a/flake.lock
+++ b/flake.lock
@ -17,16 +17,16 @@
    },
    "nixpkgs": {
      "locked": {
-        "lastModified": 1672580127,
-        "narHash": "sha256-3lW3xZslREhJogoOkjeZtlBtvFMyxHku7I/9IVehhT8=",
+        "lastModified": 1675918889,
+        "narHash": "sha256-hy7re4F9AEQqwZxubct7jBRos6md26bmxnCjxf5utJA=",
        "owner": "NixOS",
        "repo": "nixpkgs",
-        "rev": "0874168639713f547c05947c76124f78441ea46c",
+        "rev": "49efda9011e8cdcd6c1aad30384cb1dc230c82fe",
        "type": "github"
      },
      "original": {
        "id": "nixpkgs",
-        "ref": "nixos-22.05",
+        "ref": "nixos-22.11",
        "type": "indirect"
      }
    },
@ -52,7 +52,7 @@
        "nixpkgs": "nixpkgs_2"
      },
      "locked": {
-        "narHash": "sha256-/YOtiDKPUXKKpIhsAds11llfC42ScGW27bbHnNZebco=",
+        "narHash": "sha256-0eO3S+2gLODqDoloufeC99PfQ5mthuN9JADzqFXid1Y=",
        "type": "tarball",
        "url": "https://github.com/oxalica/rust-overlay/archive/master.tar.gz"
      },
@ -64,7 +64,23 @@
    "root": {
      "inputs": {
        "nixpkgs": "nixpkgs",
-        "oxalica": "oxalica"
+        "oxalica": "oxalica",
+        "unstable": "unstable"
+      }
+    },
+    "unstable": {
+      "locked": {
+        "lastModified": 1675942811,
+        "narHash": "sha256-/v4Z9mJmADTpXrdIlAjFa1e+gkpIIROR670UVDQFwIw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "724bfc0892363087709bd3a5a1666296759154b1",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-unstable",
+        "type": "indirect"
      }
    }
  },
--- a/flake.nix
+++ b/flake.nix
@ -2,11 +2,12 @@
  description = "Lumenescent Dreams Tools";

  inputs = {
-    nixpkgs.url = "nixpkgs/nixos-22.05";
+    nixpkgs.url = "nixpkgs/nixos-22.11";
+    unstable.url = "nixpkgs/nixos-unstable";
    oxalica.url = "https://github.com/oxalica/rust-overlay/archive/master.tar.gz";
  };

-  outputs = { self, nixpkgs, oxalica }:
+  outputs = { self, nixpkgs, unstable, oxalica }:
    let 
      version = builtins.string 0 8 self.lastModifiedDate;
      supportedSystems = [ "x86_64-linux" ];
@ -16,6 +17,7 @@
        let
          rust_overlay = import oxalica;
          pkgs = import nixpkgs { system = "x86_64-linux"; overlays = [ rust_overlay ]; };
+          pkgs-unstable = import unstable { system = "x86_64-linux"; overlays = [ rust_overlay ]; };
          rust = pkgs.rust-bin.stable."1.65.0".default.override {
            extensions = [ "rust-src" ];
          };
@ -23,10 +25,24 @@
        pkgs.mkShell {
          name = "ld-tools-devshell";
          buildInputs = [
-            pkgs.pkg-config
+            pkgs.clang
+            pkgs.entr
+            pkgs.glade
+            pkgs.glib
+            pkgs.gst_all_1.gst-plugins-bad
+            pkgs.gst_all_1.gst-plugins-base
+            pkgs.gst_all_1.gst-plugins-good
+            pkgs.gst_all_1.gst-plugins-ugly
+            pkgs.gst_all_1.gstreamer
+            pkgs.gtk4
+            pkgs.nodejs
            pkgs.openssl
+            pkgs.pipewire
+            pkgs.pkg-config
+            pkgs.sqlite
            rust
          ];
+          LIBCLANG_PATH="${pkgs.llvmPackages.libclang.lib}/lib";
        };
    };
 }
--- a/flow/Cargo.lock
+++ b/flow/Cargo.lock
@ -0,0 +1,65 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "flow"
+version = "0.1.0"
+dependencies = [
+ "thiserror",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.51"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d727cae5b39d21da60fa540906919ad737832fe0b1c165da3a34d6548c849d6"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8856d8364d252a14d474036ea1358d63c9e6965c8e5c1885c18f73d70bff9c7b"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.107"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f4064b5b16e03ae50984a5a8ed5d4f8803e6bc1fd170a3cda91a1be4b18e3f5"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "thiserror"
+version = "1.0.38"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a9cd18aa97d5c45c6603caea1da6628790b37f7a34b6ca89522331c5180fed0"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.38"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fb327af4685e4d03fa8cbcf1716380da910eeb2bb8be417e7f9fd3fb164f36f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "84a22b9f218b40614adcb3f4ff08b703773ad44fa9423e4e0d346d5db86e4ebc"
--- a/flow/Cargo.toml
+++ b/flow/Cargo.toml
@ -0,0 +1,11 @@
+[package]
+name = "flow"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+
+[dev-dependencies]
+thiserror = "1"
--- a/flow/readme.md
+++ b/flow/readme.md
@ -0,0 +1,3 @@
+# Flow
+
+This is a library to help with application control flow, separating fatal errors from normal recoverable errors. This is almost entirely inspired by [Error Handling in a Correctness-Critical Rust Project](https://sled.rs/errors.html) in the sled.rs library.
--- a/flow/src/lib.rs
+++ b/flow/src/lib.rs
@ -0,0 +1,257 @@
+//! Control Flow for Correctness-Critical applications
+//!
+//! https://sled.rs/errors.html
+//!
+//! Where the sled.rs library uses `Result<Result<A, Error>, FatalError>`, these are a little hard to
+//! work with. This library works out a set of utility functions that allow us to work with the
+//! nested errors in the same way as a regular Result.
+use std::error::Error;
+
+/// Implement this trait for the application's fatal errors.
+///
+/// Fatal errors should be things that should trigger an application shutdown. Applications should
+/// not try to recover from fatal errors, but simply bring the app to the safest shutdown point and
+/// report the best possible information to the user.
+///
+/// Examples: database corruption, or the database is unavailable in an application that cannot
+/// function without it. Graphics environment cannot be initialized in a GUI app.
+///
+/// Applications should generally have only one FatalError type. There are no handling utilities
+/// for Fatal conditions, so Fatal conditions must be handled through an ordinary `match`
+/// statement.
+pub trait FatalError: Error {}
+
+/// Flow<A, FE, E> represents a return value that might be a success, might be a fatal error, or
+/// might be a normal handleable error.
+pub enum Flow<A, FE, E> {
+    /// The operation was successful
+    Ok(A),
+    /// The operation encountered a fatal error. These should be bubbled up to a level that can
+    /// safely shut the application down.
+    Fatal(FE),
+    /// Ordinary errors. These should be handled and the application should recover gracefully.
+    Err(E),
+}
+
+impl<A, FE, E> Flow<A, FE, E> {
+    /// Apply an infallible function to a successful value.
+    pub fn map<B, O>(self, mapper: O) -> Flow<B, FE, E>
+    where
+        O: FnOnce(A) -> B,
+    {
+        match self {
+            Flow::Ok(val) => Flow::Ok(mapper(val)),
+            Flow::Fatal(err) => Flow::Fatal(err),
+            Flow::Err(err) => Flow::Err(err),
+        }
+    }
+
+    /// Apply a potentially fallible function to a successful value.
+    ///
+    /// Like `Result.and_then`, the mapping function can itself fail.
+    pub fn and_then<B, O>(self, handler: O) -> Flow<B, FE, E>
+    where
+        O: FnOnce(A) -> Flow<B, FE, E>,
+    {
+        match self {
+            Flow::Ok(val) => handler(val),
+            Flow::Fatal(err) => Flow::Fatal(err),
+            Flow::Err(err) => Flow::Err(err),
+        }
+    }
+
+    /// Map a normal error from one type to another. This is useful for converting an error from
+    /// one type to another, especially in re-throwing an underlying error. `?` syntax does not
+    /// work with `Flow`, so you will likely need to use this a lot.
+    pub fn map_err<F, O>(self, mapper: O) -> Flow<A, FE, F>
+    where
+        O: FnOnce(E) -> F,
+    {
+        match self {
+            Flow::Ok(val) => Flow::Ok(val),
+            Flow::Fatal(err) => Flow::Fatal(err),
+            Flow::Err(err) => Flow::Err(mapper(err)),
+        }
+    }
+
+    /// Provide a function to use to recover from (or simply re-throw) an error.
+    pub fn or_else<O, F>(self, handler: O) -> Flow<A, FE, F>
+    where
+        O: FnOnce(E) -> Flow<A, FE, F>,
+    {
+        match self {
+            Flow::Ok(val) => Flow::Ok(val),
+            Flow::Fatal(err) => Flow::Fatal(err),
+            Flow::Err(err) => handler(err),
+        }
+    }
+}
+
+/// Convert from a normal `Result` type to a `Flow` type. The error condition for a `Result` will
+/// be treated as `Flow::Err`, never `Flow::Fatal`.
+impl<A, FE, E> From<Result<A, E>> for Flow<A, FE, E> {
+    fn from(r: Result<A, E>) -> Self {
+        match r {
+            Ok(val) => Flow::Ok(val),
+            Err(err) => Flow::Err(err),
+        }
+    }
+}
+
+/// Convenience function to create an ok value.
+pub fn ok<A, FE: FatalError, E: Error>(val: A) -> Flow<A, FE, E> {
+    Flow::Ok(val)
+}
+
+/// Convenience function to create an error value.
+pub fn error<A, FE: FatalError, E: Error>(err: E) -> Flow<A, FE, E> {
+    Flow::Err(err)
+}
+
+/// Convenience function to create a fatal value.
+pub fn fatal<A, FE: FatalError, E: Error>(err: FE) -> Flow<A, FE, E> {
+    Flow::Fatal(err)
+}
+
+#[macro_export]
+/// Return early from the current function if the value is a fatal error.
+macro_rules! return_fatal {
+    ($x:expr) => {
+        match $x {
+            Flow::Fatal(err) => return Flow::Fatal(err),
+            Flow::Err(err) => Err(err),
+            Flow::Ok(val) => Ok(val),
+        }
+    };
+}
+
+#[macro_export]
+/// Return early from the current function is the value is an error.
+macro_rules! return_error {
+    ($x:expr) => {
+        match $x {
+            Flow::Ok(val) => val,
+            Flow::Err(err) => return Flow::Err(err),
+            Flow::Fatal(err) => return Flow::Fatal(err),
+        }
+    };
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+    use thiserror::Error;
+
+    #[derive(Debug, Error)]
+    enum FatalError {
+        #[error("A fatal error occurred")]
+        FatalError,
+    }
+    impl super::FatalError for FatalError {}
+    impl PartialEq for FatalError {
+        fn eq(&self, rhs: &Self) -> bool {
+            true
+        }
+    }
+
+    #[derive(Debug, Error)]
+    enum Error {
+        #[error("an error occurred")]
+        Error,
+    }
+    impl PartialEq for Error {
+        fn eq(&self, rhs: &Self) -> bool {
+            true
+        }
+    }
+
+    impl PartialEq for Flow<i32, FatalError, Error> {
+        fn eq(&self, rhs: &Self) -> bool {
+            match (self, rhs) {
+                (Flow::Ok(val), Flow::Ok(rhs)) => val == rhs,
+                (Flow::Err(_), Flow::Err(_)) => true,
+                (Flow::Fatal(_), Flow::Fatal(_)) => true,
+                _ => false,
+            }
+        }
+    }
+
+    impl std::fmt::Debug for Flow<i32, FatalError, Error> {
+        fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+            match self {
+                Flow::Ok(val) => f.write_fmt(format_args!("Flow::Ok {}", val)),
+                Flow::Err(err) => f.write_fmt(format_args!("Flow::Err {:?}", err)),
+                Flow::Fatal(err) => f.write_fmt(format_args!("Flow::Fatal {:?}", err)),
+            }
+        }
+    }
+
+    #[test]
+    fn it_can_map_things() {
+        let success = ok(15);
+        assert_eq!(ok(16), success.map(|v| v + 1));
+    }
+
+    #[test]
+    fn it_can_chain_success() {
+        let success = ok(15);
+        assert_eq!(ok(16), success.and_then(|v| ok(v + 1)));
+    }
+
+    #[test]
+    fn it_can_handle_an_error() {
+        let failure = error(Error::Error);
+        assert_eq!(ok(16), failure.or_else(|_| ok(16)));
+    }
+
+    #[test]
+    fn early_exit_on_fatal() {
+        fn ok_func() -> Flow<i32, FatalError, Error> {
+            let value = return_fatal!(ok::<i32, FatalError, Error>(15));
+            match value {
+                Ok(_) => ok(14),
+                Err(err) => error(err),
+            }
+        }
+
+        fn err_func() -> Flow<i32, FatalError, Error> {
+            let value = return_fatal!(error::<i32, FatalError, Error>(Error::Error));
+            match value {
+                Ok(_) => panic!("shouldn't have gotten here"),
+                Err(err) => ok(0),
+            }
+        }
+
+        fn fatal_func() -> Flow<i32, FatalError, Error> {
+            return_fatal!(fatal::<i32, FatalError, Error>(FatalError::FatalError));
+            panic!("failed to bail");
+        }
+
+        fatal_func();
+        assert_eq!(ok_func(), ok(14));
+        assert_eq!(err_func(), ok(0));
+    }
+
+    #[test]
+    fn it_can_early_exit_on_all_errors() {
+        fn ok_func() -> Flow<i32, FatalError, Error> {
+            let value = return_error!(ok::<i32, FatalError, Error>(15));
+            assert_eq!(value, 15);
+            ok(14)
+        }
+
+        fn err_func() -> Flow<i32, FatalError, Error> {
+            return_error!(error::<i32, FatalError, Error>(Error::Error));
+            panic!("failed to bail");
+        }
+
+        fn fatal_func() -> Flow<i32, FatalError, Error> {
+            return_error!(fatal::<i32, FatalError, Error>(FatalError::FatalError));
+            panic!("failed to bail");
+        }
+
+        fatal_func();
+        assert_eq!(ok_func(), ok(14));
+        err_func();
+    }
+}
--- a/fluent-ergonomics/Cargo.toml
+++ b/fluent-ergonomics/Cargo.toml
@ -4,7 +4,8 @@ authors = ["Savanni D'Gerinel <savanni@luminescent-dreams.com>"]
 edition = "2018"
 version = "0.2.0"
 description = "An ergonomics wrapper around Fluent-RS"
-license = "AGPL-3.0-or-later"
+license = "GPL-3.0-only"
+license-file = "../COPYING"
 homepage = "https://github.com/luminescent-dreams/fluent-ergonomics"
 repository = "https://github.com/luminescent-dreams/fluent-ergonomics"
 categories = ["internationalization"]
--- a/fluent-ergonomics/src/lib.rs
+++ b/fluent-ergonomics/src/lib.rs
@ -1,3 +1,15 @@
+/*
+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/>.
+*/
+
 //! Provide a more ergonomic interface to the base Fluent library
 //!
 //! The Fluent class makes it easier to load translation bundles with language fallbacks and to go
--- a/hex-grid/Cargo.lock
+++ b/hex-grid/Cargo.lock
--- a/hex-grid/Cargo.toml
+++ b/hex-grid/Cargo.toml
@ -0,0 +1,19 @@
+[package]
+name = "hex-grid"
+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
+
+[dependencies]
+cairo-rs = "0.16"
+gio = "0.16"
+glib = "0.16"
+gtk = { version = "0.5", package = "gtk4" }
+coordinates = { path = "../coordinates" }
+image = { version = "0.24" }
+
+[build-dependencies]
+glib-build-tools = "0.16"
--- a/hex-grid/build.rs
+++ b/hex-grid/build.rs
@ -0,0 +1,7 @@
+fn main() {
+    glib_build_tools::compile_resources(
+        "resources",
+        "resources/resources.gresources.xml",
+        "com.luminescent-dreams.hex-grid.gresource",
+    );
+}
--- a/hex-grid/resources/main.glade
+++ b/hex-grid/resources/main.glade
@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+  <template class="HexGridWindow" parent="GtkApplicationWindow">
+    <property name="can-focus">False</property>
+    <child>
+      <object class="GtkBox">
+        <property name="visible">True</property>
+        <property name="can-focus">False</property>
+        <property name="spacing">8</property>
+        <child>
+          <object class="GtkDrawingArea" id="drawing_area">
+            <property name="width-request">1024</property>
+            <property name="height-request">768</property>
+            <property name="visible">True</property>
+            <property name="can-focus">False</property>
+            <property name="margin-start">8</property>
+            <property name="margin-end">8</property>
+            <property name="margin-top">8</property>
+            <property name="margin-bottom">8</property>
+            <property name="hexpand">True</property>
+          </object>
+        </child>
+        <child>
+          <object class="GtkBox">
+            <property name="width-request">100</property>
+            <property name="visible">True</property>
+            <property name="can-focus">False</property>
+            <property name="margin-start">4</property>
+            <property name="margin-end">4</property>
+            <property name="margin-top">4</property>
+            <property name="margin-bottom">4</property>
+            <property name="orientation">vertical</property>
+            <property name="spacing">8</property>
+            <child>
+              <object class="GtkBox">
+                <property name="visible">True</property>
+                <property name="can-focus">False</property>
+                <property name="hexpand">True</property>
+                <property name="spacing">8</property>
+                <property name="homogeneous">True</property>
+                <child>
+                  <object class="GtkLabel">
+                    <property name="visible">True</property>
+                    <property name="can-focus">False</property>
+                    <property name="label" translatable="yes">Canvas Address</property>
+                  </object>
+                </child>
+                <child>
+                  <object class="GtkLabel" id="canvas_address">
+                    <property name="visible">True</property>
+                    <property name="can-focus">False</property>
+                    <property name="margin-start">4</property>
+                    <property name="margin-end">4</property>
+                    <property name="margin-top">4</property>
+                    <property name="margin-bottom">4</property>
+                    <property name="label" translatable="yes">-----</property>
+                  </object>
+                </child>
+              </object>
+          </child>
+          <child>
+              <object class="GtkBox">
+                <property name="visible">True</property>
+                <property name="can-focus">False</property>
+                <property name="hexpand">True</property>
+                <property name="spacing">8</property>
+                <property name="homogeneous">True</property>
+                <child>
+                  <object class="GtkLabel">
+                    <property name="visible">True</property>
+                    <property name="can-focus">False</property>
+                    <property name="label" translatable="yes">Hexagon Address</property>
+                  </object>
+                </child>
+                <child>
+                  <object class="GtkLabel" id="hex_address">
+                    <property name="visible">True</property>
+                    <property name="can-focus">False</property>
+                    <property name="margin-start">4</property>
+                    <property name="margin-end">4</property>
+                    <property name="margin-top">4</property>
+                    <property name="margin-bottom">4</property>
+                    <property name="label" translatable="yes">-----</property>
+                  </object>
+                </child>
+              </object>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+          </object>
+        </child>
+      </object>
+    </child>
+  </template>
+</interface>
--- a/hex-grid/resources/map.txt
+++ b/hex-grid/resources/map.txt
@ -0,0 +1,37 @@
+[0, 0] m
+[-3, 2] sw
+[1, -2] g
+[0, 3] g
+[2, 1] g
+[0, -2] g
+[-1, 0] g
+[-2, 2] g
+[3, -3] sw
+[1, 2] g
+[1, 1] d
+[2, -2] b
+[-3, 0] sw
+[-2, 0] g
+[2, -3] sw
+[-1, -1] g
+[-2, 3] sw
+[1, -3] sw
+[-3, 3] sw
+[-1, 1] g
+[1, 0] g
+[0, 1] g
+[-1, 2] s
+[1, -1] g
+[2, -1] g
+[0, -3] sw
+[0, 2] g
+[3, 0] sw
+[-1, 3] sw
+[0, -1] g
+[3, -1] sw
+[-3, 1] sw
+[2, 0] g
+[-2, 1] g
+[3, -2] sw
+[-1, -2] sw
+[-2, -1] dw
--- a/hex-grid/resources/resources.gresources.xml
+++ b/hex-grid/resources/resources.gresources.xml
@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gresources>
+    <gresource prefix="/com/luminescent-dreams/hex-grid/">
+        <file>main.glade</file>
+        <file>terrain.ppm</file>
+        <file>map.txt</file>
+    </gresource>
+</gresources>
--- a/hex-grid/resources/terrain.ppm
+++ b/hex-grid/resources/terrain.ppm
--- a/hex-grid/src/main.rs
+++ b/hex-grid/src/main.rs
@ -0,0 +1,345 @@
+/*
+Copyright 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/>.
+*/
+
+use cairo::{Context, Path};
+use coordinates::{hex_map::parse_data, AxialAddr};
+use gio::resources_lookup_data;
+use glib::{subclass::InitializingObject, Object};
+use gtk::{
+    gdk_pixbuf::Pixbuf, gio, prelude::*, subclass::prelude::*, Application, CompositeTemplate,
+    DrawingArea, Label,
+};
+use image::io::Reader as ImageReader;
+use std::{cell::RefCell, io::Cursor, rc::Rc};
+
+const APP_ID: &'static str = "com.luminescent-dreams.hex-grid";
+const HEX_RADIUS: f64 = 50.;
+const MAP_RADIUS: usize = 3;
+const DRAWING_ORIGIN: (f64, f64) = (1024. / 2., 768. / 2.);
+
+#[derive(Clone, Debug)]
+enum Tile {
+    Empty,
+    Mountain,
+    Grasslands,
+    ShallowWater,
+    DeepWater,
+    Badlands,
+    Desert,
+    Swamp,
+}
+
+impl Tile {
+    fn color(&self) -> (f64, f64, f64) {
+        match self {
+            Self::Empty => (0., 0., 0.),
+            Self::Mountain => (0.5, 0.5, 0.5),
+            Self::Grasslands => (0., 1., 0.),
+            Self::ShallowWater => (0.5, 0.5, 1.),
+            Self::DeepWater => (0., 0., 1.),
+            Self::Badlands => (0.5, 0.25, 0.),
+            Self::Desert => (1., 1., 0.),
+            Self::Swamp => (0., 0.25, 0.),
+        }
+    }
+}
+
+impl Default for Tile {
+    fn default() -> Self {
+        Self::Empty
+    }
+}
+
+impl From<&str> for Tile {
+    fn from(s: &str) -> Self {
+        match s {
+            "m" => Self::Mountain,
+            "g" => Self::Grasslands,
+            "sw" => Self::ShallowWater,
+            "dw" => Self::DeepWater,
+            "b" => Self::Badlands,
+            "d" => Self::Desert,
+            "s" => Self::Swamp,
+            _ => Self::Empty,
+        }
+    }
+}
+
+impl From<String> for Tile {
+    fn from(s: String) -> Self {
+        Self::from(s.as_ref())
+    }
+}
+
+fn main() {
+    gio::resources_register_include!("com.luminescent-dreams.hex-grid.gresource")
+        .expect("Failed to register resources");
+
+    let app = Application::builder().application_id(APP_ID).build();
+
+    app.connect_activate(|app| {
+        let window = HexGridWindow::new(app);
+        window.present();
+    });
+
+    app.run();
+}
+
+#[derive(CompositeTemplate, Default)]
+#[template(resource = "/com/luminescent-dreams/hex-grid/main.glade")]
+pub struct HexGridWindowPrivate {
+    #[template_child]
+    pub drawing_area: TemplateChild<DrawingArea>,
+    #[template_child]
+    pub hex_address: TemplateChild<Label>,
+    #[template_child]
+    pub canvas_address: TemplateChild<Label>,
+
+    current_coordinate: Rc<RefCell<Option<AxialAddr>>>,
+}
+
+#[glib::object_subclass]
+impl ObjectSubclass for HexGridWindowPrivate {
+    const NAME: &'static str = "HexGridWindow";
+    type Type = HexGridWindow;
+    type ParentType = gtk::ApplicationWindow;
+
+    fn class_init(c: &mut Self::Class) {
+        c.bind_template();
+    }
+
+    fn instance_init(obj: &InitializingObject<Self>) {
+        obj.init_template();
+    }
+}
+
+impl ObjectImpl for HexGridWindowPrivate {
+    fn constructed(&self) {
+        self.parent_constructed();
+
+        let map_text_resource = resources_lookup_data(
+            "/com/luminescent-dreams/hex-grid/map.txt",
+            gio::ResourceLookupFlags::NONE,
+        )
+        .expect("map should be in the bundle")
+        .to_vec();
+
+        let hex_map = parse_data::<Tile>(String::from_utf8(map_text_resource).unwrap().lines());
+
+        let terrain_data = resources_lookup_data(
+            "/com/luminescent-dreams/hex-grid/terrain.ppm",
+            gio::ResourceLookupFlags::NONE,
+        )
+        .unwrap();
+        let reader = ImageReader::new(Cursor::new(terrain_data))
+            .with_guessed_format()
+            .unwrap();
+        let image = reader.decode().unwrap();
+
+        let image_deep_water = pixbuf_from_image_tile(image.clone().crop(0, 0, 100, 88));
+        let image_shallow_water = pixbuf_from_image_tile(image.clone().crop(100, 0, 100, 88));
+        let image_grasslands = pixbuf_from_image_tile(image.clone().crop(200, 0, 100, 88));
+        let image_desert = pixbuf_from_image_tile(image.clone().crop(300, 0, 100, 88));
+        let image_mountain = pixbuf_from_image_tile(image.clone().crop(0, 88, 100, 88));
+        let image_badlands = pixbuf_from_image_tile(image.clone().crop(100, 88, 100, 88));
+        let image_swamp = pixbuf_from_image_tile(image.clone().crop(0, 176, 100, 88));
+
+        /*
+        let image_pb = Pixbuf::from_bytes(
+            &glib::Bytes::from(image.as_bytes()),
+            gtk::gdk_pixbuf::Colorspace::Rgb,
+            false,
+            8,
+            image.width() as i32,
+            image.height() as i32,
+            image.to_rgb8().sample_layout().height_stride as i32,
+        );
+        */
+
+        let motion_controller = gtk::EventControllerMotion::new();
+        {
+            let canvas_address = self.canvas_address.clone();
+            let hex_address = self.hex_address.clone();
+            let c = self.current_coordinate.clone();
+            motion_controller.connect_motion(move |_, x, y| {
+                let norm_x = x - DRAWING_ORIGIN.0;
+                let norm_y = y - DRAWING_ORIGIN.1;
+                let q = (2. / 3. * norm_x) / HEX_RADIUS;
+                let r = (-1. / 3. * norm_x + (3. as f64).sqrt() / 3. * norm_y) / HEX_RADIUS;
+
+                let (q, r) = axial_round(q, r);
+                let coordinate = AxialAddr::new(q, r);
+                canvas_address.set_label(&format!("{:.0} {:.0}", x, y));
+
+                if coordinate.distance(&AxialAddr::origin()) > MAP_RADIUS {
+                    hex_address.set_label(&format!("-----"));
+                    *c.borrow_mut() = None;
+                } else {
+                    hex_address.set_label(&format!("{:.0} {:.0}", coordinate.q(), coordinate.r()));
+                    *c.borrow_mut() = Some(coordinate);
+                }
+            });
+        }
+
+        {
+            self.drawing_area.set_draw_func(move |_, context, _, _| {
+                context.set_source_rgb(0., 0., 0.);
+                let _ = context.paint();
+
+                context.set_line_width(2.);
+
+                let clip_path = hexagon_path(context, 100., 88.);
+                context.set_source_pixbuf(&image_deep_water, 0., 0.);
+                context.append_path(&clip_path);
+                context.clip();
+                context.paint().expect("paint should succeed");
+
+                context.set_source_pixbuf(&image_shallow_water, 150., 0.);
+                context.paint().expect("paint should succeed");
+
+                context.set_source_pixbuf(&image_grasslands, 300., 0.);
+                context.paint().expect("paint should succeed");
+
+                context.set_source_pixbuf(&image_desert, 450., 0.);
+                context.paint().expect("paint should succeed");
+
+                context.set_source_pixbuf(&image_mountain, 0., 100.);
+                context.paint().expect("paint should succeed");
+
+                context.set_source_pixbuf(&image_badlands, 150., 100.);
+                context.paint().expect("paint should succeed");
+
+                context.set_source_pixbuf(&image_swamp, 0., 200.);
+                context.paint().expect("paint should succeed");
+                /*
+                for coordinate in vec![AxialAddr::origin()]
+                    .into_iter()
+                    .chain(AxialAddr::origin().addresses(MAP_RADIUS))
+                {
+                    let center_x =
+                        DRAWING_ORIGIN.0 + HEX_RADIUS * (3. / 2. * (coordinate.q() as f64));
+                    let center_y = DRAWING_ORIGIN.1
+                        + HEX_RADIUS
+                            * ((3. as f64).sqrt() / 2. * (coordinate.q() as f64)
+                                + (3. as f64).sqrt() * (coordinate.r() as f64));
+
+                    let tile = hex_map.get(&coordinate).unwrap();
+                    let color = tile.color();
+                    context.set_source_rgb(color.0, color.1, color.2);
+
+                    draw_hexagon(context, center_x, center_y, HEX_RADIUS);
+                    let _ = context.fill();
+                }
+                */
+            });
+        }
+        self.drawing_area.add_controller(&motion_controller);
+    }
+}
+
+impl WidgetImpl for HexGridWindowPrivate {}
+impl WindowImpl for HexGridWindowPrivate {}
+impl ApplicationWindowImpl for HexGridWindowPrivate {}
+
+glib::wrapper! {
+    pub struct HexGridWindow(ObjectSubclass<HexGridWindowPrivate>) @extends gtk::ApplicationWindow, gtk::Window, gtk::Widget,
+        @implements gtk::Accessible, gtk::Actionable, gtk::Buildable, gtk::ConstraintTarget;
+}
+
+impl HexGridWindow {
+    pub fn new(app: &Application) -> Self {
+        Object::builder().property("application", app).build()
+    }
+}
+
+fn draw_hexagon(context: &Context, center_x: f64, center_y: f64, radius: f64) {
+    let ul_x = center_x - radius;
+    let ul_y = center_y - (3. as f64).sqrt() * radius / 2.;
+    let points: Vec<(f64, f64)> = hexagon(radius * 2., (3. as f64).sqrt() * radius);
+    context.new_path();
+    context.move_to(ul_x + points[0].0, ul_y + points[0].1);
+    context.line_to(ul_x + points[1].0, ul_y + points[1].1);
+    context.line_to(ul_x + points[2].0, ul_y + points[2].1);
+    context.line_to(ul_x + points[3].0, ul_y + points[3].1);
+    context.line_to(ul_x + points[4].0, ul_y + points[4].1);
+    context.line_to(ul_x + points[5].0, ul_y + points[5].1);
+    context.close_path();
+}
+
+fn hexagon_path(context: &Context, width: f64, height: f64) -> Path {
+    context.new_path();
+    let points = hexagon(width, height);
+    context.move_to(points[0].0, points[0].1);
+    context.line_to(points[1].0, points[1].1);
+    context.line_to(points[2].0, points[2].1);
+    context.line_to(points[3].0, points[3].1);
+    context.line_to(points[4].0, points[4].1);
+    context.line_to(points[5].0, points[5].1);
+    context.copy_path().expect("to successfully copy a path")
+}
+
+fn hexagon(width: f64, height: f64) -> Vec<(f64, f64)> {
+    let center_x = width / 2.;
+    let center_y = height / 2.;
+    let radius = width / 2.;
+
+    vec![
+        (center_x + radius, center_y),
+        (
+            center_x + radius / 2.,
+            center_y + (3. as f64).sqrt() * radius / 2.,
+        ),
+        (
+            center_x - radius / 2.,
+            center_y + (3. as f64).sqrt() * radius / 2.,
+        ),
+        (center_x - radius, center_y),
+        (
+            center_x - radius / 2.,
+            center_y - (3. as f64).sqrt() * radius / 2.,
+        ),
+        (
+            center_x + radius / 2.,
+            center_y - (3. as f64).sqrt() * radius / 2.,
+        ),
+    ]
+}
+
+fn axial_round(q_f64: f64, r_f64: f64) -> (i32, i32) {
+    let s_f64 = -q_f64 - r_f64;
+    let mut q = q_f64.round();
+    let mut r = r_f64.round();
+    let s = s_f64.round();
+
+    let q_diff = (q - q_f64).abs();
+    let r_diff = (r - r_f64).abs();
+    let s_diff = (s - s_f64).abs();
+
+    if q_diff > r_diff && q_diff > s_diff {
+        q = -r - s;
+    } else if r_diff > s_diff {
+        r = -q - s;
+    }
+    unsafe { (q.to_int_unchecked::<i32>(), r.to_int_unchecked::<i32>()) }
+}
+
+fn pixbuf_from_image_tile(image: image::DynamicImage) -> Pixbuf {
+    Pixbuf::from_bytes(
+        &glib::Bytes::from(image.as_bytes()),
+        gtk::gdk_pixbuf::Colorspace::Rgb,
+        false,
+        8,
+        image.width() as i32,
+        image.height() as i32,
+        image.to_rgb8().sample_layout().height_stride as i32,
+    )
+}
--- a/ifc/Cargo.toml
+++ b/ifc/Cargo.toml
@ -6,6 +6,8 @@ authors = ["Savanni D'Gerinel <savanni@luminescent-dreams.com>"]
 edition = "2018"
 keywords = ["date", "time", "calendar"]
 categories = ["date-and-time"]
+license = "GPL-3.0-only"
+license-file = "../COPYING"

 [dependencies]
 chrono = "0.4"
--- a/ifc/src/lib.rs
+++ b/ifc/src/lib.rs
@ -1,3 +1,15 @@
+/*
+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;

--- a/ifc/src/today.rs
+++ b/ifc/src/today.rs
@ -1,3 +1,15 @@
+/*
+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;
 extern crate international_fixed_calendar as IFC;
--- a/ifc/src/web.rs
+++ b/ifc/src/web.rs
@ -1,3 +1,15 @@
+/*
+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/>.
+*/
+
 use chrono::{Datelike, Utc};
 use international_fixed_calendar as IFC;
 use iron::headers;
--- a/music-player/client/index.html
+++ b/music-player/client/index.html
@ -0,0 +1,79 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <link rel="stylesheet" href="./styles.css" type="text/css" />
+    <title>Music Player</title>
+</head>
+<body>
+    <div class="currently-playing"> <span class="track-title"> Lindsey Sterling - Elements </span> <span class="player-status">[paused]</span> </div>
+    <div class="controls"><button class="play-pause">Pause</button></div>
+
+    <div class="track-list">
+        <div class="track-list__grouping">
+            <ul class="bulletless-list">
+                <li> By Artist </li>
+                <li> By Album </li>
+                <li> Work Music </li>
+                <li> Dance Music </li>
+            </ul>
+        </div>
+
+        <div class="track-list__tracks">
+            <table>
+                <thead>
+                    <tr>
+                        <th> Track # </th>
+                        <th> Title </th>
+                        <th> Artist </th>
+                        <th> Album </th>
+                        <th> Length </th>
+                    </tr>
+                </thead>
+
+                <tbody>
+                    <tr class="track-list__track-row">
+                        <td> 1 </td>
+                        <td> Underground </td>
+                        <td> Lindsey Stirling </td>
+                        <td> Artemis </td>
+                        <td> 4:24 </td>
+                    </tr>
+                    <tr class="track-list__track-row">
+                        <td> 2 </td>
+                        <td> Artemis </td>
+                        <td> Lindsey Stirling </td>
+                        <td> Artemis </td>
+                        <td> 3:54 </td>
+                    </tr>
+                    <tr class="track-list__track-row">
+                        <td> 3 </td>
+                        <td> Til the Light Goes Out </td>
+                        <td> Lindsey Stirling </td>
+                        <td> Artemis </td>
+                        <td> 4:46 </td>
+                    </tr>
+                    <tr class="track-list__track-row">
+                        <td> 4 </td>
+                        <td> Between Twilight </td>
+                        <td> Lindsey Stirling </td>
+                        <td> Artemis </td>
+                        <td> 4:20 </td>
+                    </tr>
+                    <tr class="track-list__track-row">
+                        <td> 5 </td>
+                        <td> Foreverglow </td>
+                        <td> Lindsey Stirling </td>
+                        <td> Artemis </td>
+                        <td> 3:58 </td>
+                    </tr>
+                </tbody>
+            </table>
+        </div>
+    </div>
+
+<script src="./dist/main.js" type="module"></script>
+
+</body>
+</html>
--- a/music-player/client/package-lock.json
+++ b/music-player/client/package-lock.json
--- a/music-player/client/package.json
+++ b/music-player/client/package.json
@ -0,0 +1,26 @@
+{
+  "name": "music-player-client",
+  "version": "1.0.0",
+  "description": "",
+  "main": "main.js",
+  "scripts": {
+    "build": "browserify src/main.ts -p [ tsify ] > dist/bundle.js",
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "watch": "exa index.html styles.css src/* | entr -s 'npm run build'"
+  },
+  "author": "Savanni D'Gerinel <savanni@luminescent-dreams.com>",
+  "license": "GPL-3.0-or-later",
+  "dependencies": {
+    "lodash": "^4.17.21",
+    "systemjs": "^6.13.0"
+  },
+  "devDependencies": {
+    "@types/lodash": "^4.14.191",
+    "babelify": "^10.0.0",
+    "browserify": "^17.0.0",
+    "live-server": "^1.2.2",
+    "tsify": "^5.0.4",
+    "typescript": "^4.9.4",
+    "watchify": "^4.0.0"
+  }
+}
--- a/music-player/client/src/main.ts
+++ b/music-player/client/src/main.ts
@ -0,0 +1,27 @@
+import * as _ from "lodash";
+
+const replaceTitle = () => {
+  const title = document.querySelector(".js-title");
+  if (title && title.innerHTML) {
+    title.innerHTML = "Music Player Paused";
+  }
+};
+
+/*
+const checkWeatherService = () => {
+    fetch("https://api.weather.gov/")
+        .then((r) => r.json())
+        .then((js) => {
+            const weather = document.querySelector('.js-weather');
+            weather.innerHTML = js.status;
+        });
+}
+*/
+
+const run = () => {
+  replaceTitle();
+  console.log(_.map([4, 8], (x) => x * x));
+  // checkWeatherService();
+};
+
+run();
--- a/music-player/client/styles.css
+++ b/music-player/client/styles.css
@ -0,0 +1,39 @@
+body {
+    background-color: rgb(240, 230, 230);
+}
+
+.currently-playing {
+    padding: 8px;
+}
+
+.controls {
+    padding: 8px;
+}
+
+.track-list {
+    border: 1px solid black;
+    display: flex;
+}
+
+.track-list__grouping {
+    padding: 8px;
+    border-style: solid;
+    border-width: 0px 5px 0px 0px;
+}
+
+.bulletless-list {
+    list-style: none;
+}
+
+.track-list__track-row {
+    background-color: rgb(10, 10, 10);
+}
+
+.track-list__track-row:nth-child(even) {
+    background-color: rgb(255, 255, 255);
+}
+
+.track-list__track-row:nth-child(odd) {
+    background-color: rgb(200, 200, 200);
+}
+
--- a/music-player/client/tsconfig.json
+++ b/music-player/client/tsconfig.json
@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+      "target": "es2015",
+      "module": "commonjs",
+      "moduleResolution": "node",
+      "rootDir": "src",
+      "outDir": "./dist",
+      "lib": ["es2016", "DOM"],
+      "sourceMap": true
+  }
+}
--- a/music-player/errors.rs
+++ b/music-player/errors.rs
@ -0,0 +1,7 @@
+pub use flow::error;
+
+pub enum FatalError {
+    UnexpectedError,
+}
+
+impl flow::FatalError for FatalError {}
--- a/music-player/server/Cargo.lock
+++ b/music-player/server/Cargo.lock
--- a/music-player/server/Cargo.toml
+++ b/music-player/server/Cargo.toml
@ -0,0 +1,20 @@
+[package]
+name = "music-player"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+dbus        = { version = "0.9.7" }
+flow        = { path = "../../flow" }
+mpris       = { version = "2.0" }
+rusqlite    = { version = "0.28" }
+serde       = { version = "1.0", features = ["derive"] }
+thiserror   = { version = "1.0" }
+tokio       = { version = "1.24", features = ["full"] }
+url         = { version = "2.3" }
+uuid        = { version = "1", features = ["v4"] }
+warp        = { version = "0.3" }
+
+[lib]
--- a/music-player/server/src/audio.rs
+++ b/music-player/server/src/audio.rs
@ -0,0 +1,308 @@
+/*
+Copyright 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/>.
+*/
+
+use dbus::ffidisp::Connection;
+use mpris::{FindingError, PlaybackStatus, Player, PlayerFinder, ProgressTick};
+use serde::Serialize;
+use std::{
+    path::PathBuf,
+    sync::mpsc::{channel, Receiver, Sender, TryRecvError},
+    thread,
+    time::Duration,
+};
+use thiserror::Error;
+
+pub enum Message {
+    Quit,
+}
+
+#[derive(Clone, Debug)]
+pub enum Event {
+    Paused(Track, Duration),
+    Playing(Track, Duration),
+    Stopped,
+    Position(Track, Duration),
+}
+
+#[derive(Debug)]
+pub struct DeviceInformation {
+    pub address: String,
+    pub name: String,
+}
+
+pub fn list_devices(conn: Connection) -> Result<Vec<DeviceInformation>, FindingError> {
+    Ok(PlayerFinder::for_connection(conn)
+        .find_all()?
+        .into_iter()
+        .map(|player| DeviceInformation {
+            address: player.unique_name().to_owned(),
+            name: player.identity().to_owned(),
+        })
+        .collect())
+}
+
+#[derive(Debug, Error)]
+pub enum AudioError {
+    #[error("DBus device was not found")]
+    DeviceNotFound,
+
+    #[error("DBus connection lost or otherwise failed")]
+    ConnectionLost,
+
+    #[error("Specified media cannot be found")]
+    MediaNotFound,
+
+    #[error("Play was ordered, but nothing is in the queue")]
+    NothingInQueue,
+
+    #[error("Unknown dbus error")]
+    DbusError(dbus::Error),
+
+    #[error("Unknown problem with mpris")]
+    MprisError(mpris::DBusError),
+
+    #[error("url parse error {0}")]
+    UrlError(url::ParseError),
+}
+
+impl From<dbus::Error> for AudioError {
+    fn from(err: dbus::Error) -> Self {
+        Self::DbusError(err)
+    }
+}
+
+impl From<mpris::DBusError> for AudioError {
+    fn from(err: mpris::DBusError) -> Self {
+        Self::MprisError(err)
+    }
+}
+
+impl From<url::ParseError> for AudioError {
+    fn from(err: url::ParseError) -> Self {
+        Self::UrlError(err)
+    }
+}
+
+#[derive(Clone, Debug, Eq, Hash, PartialEq, Serialize)]
+pub struct TrackId(String);
+
+impl Default for TrackId {
+    fn default() -> Self {
+        Self(uuid::Uuid::new_v4().as_hyphenated().to_string())
+    }
+}
+
+impl From<String> for TrackId {
+    fn from(id: String) -> Self {
+        Self(id)
+    }
+}
+
+impl AsRef<String> for TrackId {
+    fn as_ref<'a>(&'a self) -> &'a String {
+        &self.0
+    }
+}
+
+#[derive(Clone, Debug)]
+pub struct TrackInfo {
+    pub track_number: Option<i32>,
+    pub name: Option<String>,
+    pub album: Option<String>,
+    pub artist: Option<String>,
+}
+
+#[derive(Clone, Debug, PartialEq, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Track {
+    pub id: TrackId,
+    pub track_number: Option<i32>,
+    pub name: Option<String>,
+    pub album: Option<String>,
+    pub artist: Option<String>,
+}
+
+/*
+impl From<&mpris::Metadata> for Track {
+    fn from(data: &mpris::Metadata) -> Self {
+        Self {
+            id: data.track_id().unwrap(),
+            track_number: data.track_number(),
+            name: data.title().map(|s| s.to_owned()),
+            album: data.album_name().map(|s| s.to_owned()),
+            artist: None,
+        }
+    }
+}
+
+impl From<mpris::Metadata> for Track {
+    fn from(data: mpris::Metadata) -> Self {
+        Self::from(&data)
+    }
+}
+*/
+
+#[derive(Clone, Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub enum State {
+    Playing(Track),
+    Paused(Track),
+    Stopped,
+}
+
+pub struct CurrentlyPlaying {
+    track: Track,
+    position: Duration,
+}
+
+#[derive(Clone, Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Capabilities {
+    pub can_control: bool,
+    pub can_pause: bool,
+    pub can_play: bool,
+    pub supports_track_lists: bool,
+}
+
+pub trait AudioPlayer {
+    fn capabilities(&self) -> Result<Capabilities, AudioError>;
+    fn state(&self) -> Result<State, AudioError>;
+    fn play(&self, trackid: url::Url) -> Result<State, AudioError>;
+    fn play_pause(&self) -> Result<State, AudioError>;
+}
+
+pub struct GStreamerPlayer {
+    url: url::Url,
+}
+
+impl AudioPlayer for GStreamerPlayer {
+    fn capabilities(&self) -> Result<Capabilities, AudioError> {
+        unimplemented!()
+    }
+
+    fn state(&self) -> Result<State, AudioError> {
+        unimplemented!()
+    }
+
+    fn play(&self, trackid: url::Url) -> Result<State, AudioError> {
+        unimplemented!()
+    }
+
+    fn play_pause(&self) -> Result<State, AudioError> {
+        unimplemented!()
+    }
+}
+
+/*
+pub struct MprisDevice {
+    device_id: String,
+    player: Player,
+    state: State,
+}
+
+impl MprisDevice {
+    pub fn new(device_id: String) -> Result<MprisDevice, AudioError> {
+        let connection = Connection::new_session()?;
+        Ok(MprisDevice {
+            device_id: device_id.clone(),
+            player: mpris::Player::new(connection, device_id, 1000)?,
+            state: State::Stopped,
+        })
+    }
+
+    pub fn monitor(&mut self, control_channel: Receiver<Message>) {
+        let (tx, rx) = channel();
+        {
+            let device_id = self.device_id.clone();
+            let tx = tx.clone();
+            thread::spawn(move || {
+                MprisDevice::new(device_id)
+                    .expect("connect to bus")
+                    .monitor_progress(tx);
+            });
+        };
+
+        loop {
+            match control_channel.try_recv() {
+                Ok(Message::Quit) => return,
+                Err(TryRecvError::Empty) => {}
+                Err(TryRecvError::Disconnected) => return,
+            }
+            let event = rx.recv().expect("receive should never fail");
+            println!("event received: {:?}", event);
+        }
+    }
+
+    pub fn monitor_progress(&self, tx: Sender<Event>) {
+        let mut tracker = self
+            .player
+            .track_progress(1000)
+            .expect("can get an event stream");
+        loop {
+            let ProgressTick { progress, .. } = tracker.tick();
+            match progress.playback_status() {
+                PlaybackStatus::Playing => {
+                    tx.send(Event::Playing(
+                        Track::from(progress.metadata()),
+                        progress.position(),
+                    ))
+                    .expect("send to succeed");
+                }
+                PlaybackStatus::Paused => {
+                    tx.send(Event::Paused(
+                        Track::from(progress.metadata()),
+                        progress.position(),
+                    ))
+                    .expect("send to succeed");
+                }
+                PlaybackStatus::Stopped => {
+                    tx.send(Event::Stopped).expect("send to succeed");
+                }
+            }
+        }
+    }
+}
+
+impl AudioPlayer for MprisDevice {
+    fn capabilities(&self) -> Result<Capabilities, AudioError> {
+        Ok(Capabilities {
+            can_control: self.player.can_control()?,
+            can_pause: self.player.can_pause()?,
+            can_play: self.player.can_play()?,
+            supports_track_lists: self.player.supports_track_lists(),
+        })
+    }
+
+    fn state(&self) -> Result<State, AudioError> {
+        println!(
+            "supports track lists: {:?}",
+            self.player.supports_track_lists()
+        );
+        let metadata = self.player.get_metadata()?;
+        println!("{:?}", metadata);
+        unimplemented!("AudioPlayer state")
+    }
+
+    fn play(&self, track_id: String) -> Result<State, AudioError> {
+        println!("playing: {}", track_id);
+        self.player
+            .go_to(&mpris::TrackID::from(dbus::Path::from(track_id)))?;
+        self.player.play();
+        Ok(State::Stopped)
+    }
+
+    fn play_pause(&self) -> Result<State, AudioError> {
+        self.player.play_pause()?;
+        Ok(State::Stopped)
+    }
+}
+*/
--- a/music-player/server/src/bin/server.rs
+++ b/music-player/server/src/bin/server.rs
@ -0,0 +1,114 @@
+use flow::Flow;
+use std::{io::stdin, path::PathBuf, sync::Arc, thread, time::Duration};
+// use warp::Filter;
+
+use music_player::{core::Core, database::MemoryIndex};
+
+/*
+fn tracks() -> Vec<Track> {
+    vec![
+        Track {
+            track_number: Some(1),
+            name: Some("Underground".to_owned()),
+            album: Some("Artemis".to_owned()),
+            artist: Some("Lindsey Stirling".to_owned()),
+            path: PathBuf::from("/mnt/music/Lindsey Stirling/Artemis/01 - Underground.ogg"),
+        },
+        Track {
+            track_number: Some(2),
+            name: Some("Artemis".to_owned()),
+            album: Some("Artemis".to_owned()),
+            artist: Some("Lindsey Stirling".to_owned()),
+            path: PathBuf::from("/mnt/music/Lindsey Stirling/Artemis/02 - Artemis.ogg"),
+        },
+        Track {
+            track_number: Some(3),
+            name: Some("Til the Light Goes Out".to_owned()),
+            album: Some("Artemis".to_owned()),
+            artist: Some("Lindsey Stirling".to_owned()),
+            path: PathBuf::from(
+                "/mnt/music/Lindsey Stirling/Artemis/03 - Til the Light Goes Out.ogg",
+            ),
+        },
+        Track {
+            track_number: Some(4),
+            name: Some("Between Twilight".to_owned()),
+            album: Some("Artemis".to_owned()),
+            artist: Some("Lindsey Stirling".to_owned()),
+            path: PathBuf::from("/mnt/music/Lindsey Stirling/Artemis/04 - Between Twilight.ogg"),
+        },
+        Track {
+            track_number: Some(5),
+            name: Some("Foreverglow".to_owned()),
+            album: Some("Artemis".to_owned()),
+            artist: Some("Lindsey Stirling".to_owned()),
+            path: PathBuf::from("/mnt/music/Lindsey Stirling/Artemis/05 - Foreverglow.ogg"),
+        },
+    ]
+}
+*/
+
+#[tokio::main]
+pub async fn main() {
+    match Core::new(Arc::new(MemoryIndex::new())) {
+        Flow::Ok(core) => {
+            let mut buf = String::new();
+            let _ = stdin().read_line(&mut buf).unwrap();
+            core.exit();
+        }
+        Flow::Err(err) => println!("non-fatal error: {:?}", err),
+        Flow::Fatal(err) => println!("fatal error: {:?}", err),
+    }
+
+    /*
+    let connection = Connection::new_session().expect("to connect to dbus");
+
+    for player in list_players(connection) {
+        println!("player found: {}", player.identity());
+    }
+    */
+
+    /*
+    let devices = warp::path!("api" / "v1" / "devices")
+        .and(warp::get())
+        .map(|| {
+            let conn = Connection::new_session().expect("to connect to dbus");
+            warp::reply::json(&list_devices(conn))
+        });
+
+    let track_list = warp::path!("api" / "v1" / "tracks")
+        .and(warp::get())
+        .map(|| warp::reply::json(&tracks()));
+    let tracks_for_artist = warp::path!("api" / "v1" / "artist" / String)
+        .and(warp::get())
+        .map(|_artist: String| warp::reply::json(&tracks()));
+    let tracks_for_album = warp::path!("api" / "v1" / "album" / String)
+        .and(warp::get())
+        .map(|_album: String| warp::reply::json(&tracks()));
+
+    let queue = warp::path!("api" / "v1" / "queue")
+        .and(warp::get())
+        .map(|| {
+            let conn = Connection::new_session().expect("to connect to dbus");
+            warp::reply::json(&list_tracks(conn))
+        });
+
+    let playing_status = warp::path!("api" / "v1" / "play-pause")
+        .and(warp::get())
+        .map(|| warp::reply::json(&PlayPause::Paused));
+
+    let routes = devices
+        .or(track_list)
+        .or(tracks_for_album)
+        .or(tracks_for_artist)
+        .or(queue)
+        .or(playing_status);
+    let server = warp::serve(routes);
+    server
+        .run(SocketAddr::new(
+            IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)),
+            8002,
+        ))
+        .await;
+        */
+}
--- a/music-player/server/src/core.rs
+++ b/music-player/server/src/core.rs
@ -0,0 +1,181 @@
+use crate::{
+    database::{Database, MemoryIndex, MusicIndex},
+    Error, FatalError,
+};
+use flow::{error, fatal, ok, return_error, return_fatal, Flow};
+use std::{
+    path::{Path, PathBuf},
+    sync::{
+        mpsc::{channel, Receiver, RecvTimeoutError, Sender},
+        Arc,
+    },
+    thread,
+    thread::JoinHandle,
+    time::{Duration, Instant},
+};
+
+#[derive(Debug, Error)]
+pub enum ScannerError {
+    #[error("Cannot scan {0}")]
+    CannotScan(PathBuf),
+    #[error("IO error {0}")]
+    IO(std::io::Error),
+}
+
+impl From<std::io::Error> for ScannerError {
+    fn from(err: std::io::Error) -> Self {
+        Self::IO(err)
+    }
+}
+
+pub enum ControlMsg {
+    Exit,
+}
+
+pub enum TrackMsg {
+    DbUpdate,
+}
+
+pub enum PlaybackMsg {
+    PositionUpdate,
+    Playing,
+    Pausing,
+    Stopping,
+}
+
+pub struct Core {
+    db: Arc<dyn MusicIndex>,
+    track_handle: JoinHandle<()>,
+    track_rx: Receiver<TrackMsg>,
+    playback_handle: JoinHandle<()>,
+    playback_rx: Receiver<PlaybackMsg>,
+    control_tx: Sender<ControlMsg>,
+}
+
+fn scan_frequency() -> Duration {
+    Duration::from_secs(60)
+}
+
+pub struct FileScanner {
+    db: Arc<dyn MusicIndex>,
+    control_rx: Receiver<ControlMsg>,
+    tracker_tx: Sender<TrackMsg>,
+    next_scan: Instant,
+    music_directories: Vec<PathBuf>,
+}
+
+impl FileScanner {
+    fn new(
+        db: Arc<dyn MusicIndex>,
+        roots: Vec<PathBuf>,
+        control_rx: Receiver<ControlMsg>,
+        tracker_tx: Sender<TrackMsg>,
+    ) -> Self {
+        Self {
+            db,
+            control_rx,
+            tracker_tx,
+            next_scan: Instant::now(),
+            music_directories: roots,
+        }
+    }
+
+    fn scan(&mut self) {
+        loop {
+            match self.control_rx.recv_timeout(Duration::from_millis(100)) {
+                Ok(ControlMsg::Exit) => return,
+                Err(RecvTimeoutError::Timeout) => (),
+                Err(RecvTimeoutError::Disconnected) => return,
+            }
+            if Instant::now() >= self.next_scan {
+                for root in self.music_directories.iter() {
+                    self.scan_dir(vec![root.clone()]);
+                }
+                self.next_scan = Instant::now() + scan_frequency();
+            }
+        }
+    }
+
+    fn scan_dir(&self, mut paths: Vec<PathBuf>) -> Flow<(), FatalError, ScannerError> {
+        while let Some(dir) = paths.pop() {
+            println!("scanning {:?}", dir);
+            return_error!(self.scan_dir_(&mut paths, dir));
+        }
+        ok(())
+    }
+
+    fn scan_dir_(
+        &self,
+        paths: &mut Vec<PathBuf>,
+        dir: PathBuf,
+    ) -> Flow<(), FatalError, ScannerError> {
+        let dir_iter = return_error!(Flow::from(dir.read_dir().map_err(ScannerError::from)));
+        for entry in dir_iter {
+            match entry {
+                Ok(entry) if entry.path().is_dir() => paths.push(entry.path()),
+                Ok(entry) => {
+                    let _ = return_fatal!(self.scan_file(entry.path()).or_else(|err| {
+                        println!("scan_file failed: {:?}", err);
+                        ok::<(), FatalError, ScannerError>(())
+                    }));
+                    ()
+                }
+                Err(err) => {
+                    println!("scan_dir could not read path: ({:?})", err);
+                }
+            }
+        }
+        ok(())
+    }
+
+    fn scan_file(&self, path: PathBuf) -> Flow<(), FatalError, ScannerError> {
+        ok(())
+    }
+}
+
+impl Core {
+    pub fn new(db: Arc<dyn MusicIndex>) -> Flow<Core, FatalError, Error> {
+        let (control_tx, control_rx) = channel::<ControlMsg>();
+
+        let (track_handle, track_rx) = {
+            let (track_tx, track_rx) = channel();
+            let db = db.clone();
+            let track_handle = thread::spawn(move || {
+                FileScanner::new(
+                    db,
+                    vec![PathBuf::from("/home/savanni/Music/")],
+                    control_rx,
+                    track_tx,
+                )
+                .scan();
+            });
+            (track_handle, track_rx)
+        };
+
+        let (playback_handle, playback_rx) = {
+            let (playback_tx, playback_rx) = channel();
+            let playback_handle = thread::spawn(move || {});
+            (playback_handle, playback_rx)
+        };
+
+        ok(Core {
+            db,
+            track_handle,
+            track_rx,
+            playback_handle,
+            playback_rx,
+            control_tx,
+        })
+    }
+
+    pub fn exit(&self) {
+        let _ = self.control_tx.send(ControlMsg::Exit);
+        /*
+        self.track_handle.join();
+        self.playback_handle.join();
+        */
+    }
+}
+
+#[cfg(test)]
+mod test {}
--- a/music-player/server/src/database.rs
+++ b/music-player/server/src/database.rs
@ -0,0 +1,106 @@
+use crate::{
+    audio::{Track, TrackId, TrackInfo},
+    FatalError,
+};
+use flow::{error, ok, Flow};
+use rusqlite::Connection;
+use std::collections::HashMap;
+use std::{
+    path::PathBuf,
+    sync::{Arc, Mutex, RwLock},
+};
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum DatabaseError {
+    #[error("database is unreadable")]
+    DatabaseUnreadable,
+    #[error("unhandled database problem: {0}")]
+    UnhandledError(rusqlite::Error),
+}
+
+pub trait MusicIndex: Sync + Send {
+    fn add_track(&mut self, track: &TrackInfo) -> Flow<Track, FatalError, DatabaseError>;
+    fn remove_track(&mut self, id: &TrackId) -> Flow<(), FatalError, DatabaseError>;
+    fn get_track_info(&self, id: &TrackId) -> Flow<Option<Track>, FatalError, DatabaseError>;
+}
+
+pub struct MemoryIndex {
+    tracks: RwLock<HashMap<TrackId, Track>>,
+}
+
+impl MemoryIndex {
+    pub fn new() -> MemoryIndex {
+        MemoryIndex {
+            tracks: RwLock::new(HashMap::default()),
+        }
+    }
+}
+
+impl MusicIndex for MemoryIndex {
+    fn add_track(&mut self, info: &TrackInfo) -> Flow<Track, FatalError, DatabaseError> {
+        let id = TrackId::default();
+        let track = Track {
+            id: id.clone(),
+            track_number: info.track_number,
+            name: info.name.clone(),
+            album: info.album.clone(),
+            artist: info.artist.clone(),
+        };
+        let mut tracks = self.tracks.write().unwrap();
+        tracks.insert(id, track.clone());
+        ok(track)
+    }
+
+    fn remove_track(&mut self, id: &TrackId) -> Flow<(), FatalError, DatabaseError> {
+        let mut tracks = self.tracks.write().unwrap();
+        tracks.remove(&id);
+        ok(())
+    }
+
+    fn get_track_info<'a>(
+        &'a self,
+        id: &TrackId,
+    ) -> Flow<Option<Track>, FatalError, DatabaseError> {
+        let track = {
+            let tracks = self.tracks.read().unwrap();
+            tracks.get(&id).cloned()
+        };
+        ok(track)
+    }
+}
+
+pub struct ManagedConnection<'a> {
+    pool: &'a Database,
+    conn: Option<Connection>,
+}
+
+impl<'a> Drop for ManagedConnection<'a> {
+    fn drop(&mut self) {
+        self.pool.r(self.conn.take().unwrap());
+    }
+}
+
+#[derive(Clone)]
+pub struct Database {
+    path: PathBuf,
+    pool: Arc<Mutex<Vec<Connection>>>,
+}
+
+impl Database {
+    pub fn new(path: PathBuf) -> Flow<Database, FatalError, DatabaseError> {
+        let connection = match Connection::open(path.clone()) {
+            Ok(connection) => connection,
+            Err(err) => return error(DatabaseError::UnhandledError(err)),
+        };
+        ok(Database {
+            path,
+            pool: Arc::new(Mutex::new(vec![connection])),
+        })
+    }
+
+    pub fn r(&self, conn: Connection) {
+        let mut pool = self.pool.lock().unwrap();
+        pool.push(conn);
+    }
+}
--- a/music-player/server/src/lib.rs
+++ b/music-player/server/src/lib.rs
@ -0,0 +1,25 @@
+pub mod audio;
+pub mod core;
+pub mod database;
+use database::DatabaseError;
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error("Database error: {0}")]
+    DatabaseError(DatabaseError),
+}
+
+impl From<DatabaseError> for Error {
+    fn from(err: DatabaseError) -> Self {
+        Self::DatabaseError(err)
+    }
+}
+
+#[derive(Debug, Error)]
+pub enum FatalError {
+    #[error("Unexpected error")]
+    UnexpectedError,
+}
+
+impl flow::FatalError for FatalError {}
--- a/music-player/streamer/Cargo.lock
+++ b/music-player/streamer/Cargo.lock
@ -0,0 +1,514 @@
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+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
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--- a/music-player/streamer/Cargo.toml
+++ b/music-player/streamer/Cargo.toml
@ -0,0 +1,10 @@
+[package]
+name = "streamer"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+gstreamer = "0.19.7"
+
--- a/music-player/streamer/src/main.rs
+++ b/music-player/streamer/src/main.rs
@ -0,0 +1,46 @@
+use gstreamer::{format::ClockTime, prelude::*, MessageView};
+use std::{thread, time, time::Duration};
+
+fn main() {
+    gstreamer::init().unwrap();
+
+    let uri = "file:///home/savanni/Music/Lindsey%20Stirling/Artemis/01%20-%20Underground.mp3.mp3";
+    let pipeline = gstreamer::parse_launch(&format!("playbin uri={}", uri)).unwrap();
+    pipeline.set_state(gstreamer::State::Playing).unwrap();
+
+    let message_handler = {
+        let pipeline = pipeline.clone();
+        thread::spawn(move || {
+            let bus = pipeline.bus().unwrap();
+            for msg in bus.iter_timed(gstreamer::ClockTime::NONE) {
+                match msg.view() {
+                    MessageView::Eos(_) => (),
+                    MessageView::Error(err) => {
+                        println!(
+                            "Error from {:?}: {} ({:?})",
+                            err.src().map(|s| s.path_string()),
+                            err.error(),
+                            err.debug()
+                        );
+                    }
+                    msg => println!("{:?}", msg),
+                }
+            }
+        })
+    };
+
+    let query_handler = {
+        let pipeline = pipeline.clone();
+        thread::spawn(move || loop {
+            let position: Option<ClockTime> = pipeline.query_position();
+            let duration: Option<ClockTime> = pipeline.query_duration();
+            println!("{:?} {:?}", position, duration);
+            thread::sleep(Duration::from_millis(100));
+        })
+    };
+
+    message_handler.join();
+    query_handler.join();
+
+    pipeline.set_state(gstreamer::State::Null).unwrap();
+}
--- a/readme.md
+++ b/readme.md
@ -1 +1,19 @@
 # Luminescent Dreams Tools Monorepo
+
+Add files in this repo are Copyright Savanni D'Gerinel, whether the copyright
+notice is present or not. All of the work in this repository, except where
+explicitely noted otherwise, is the sole work of Savanni D'Gerinel.
+
+Future contributors will be noted in the CONTRIBUTORS file.
+
+---
+
+Copyright 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/>.
Author	SHA1	Message	Date
Savanni D'Gerinel	6ee7887bd2	Add a lot of documentation to the Flow library	2023-02-11 12:55:00 -05:00
Savanni D'Gerinel	a584329d78	Set up the app structure and the file scanner	2023-02-11 12:55:00 -05:00
Savanni D'Gerinel	902b690d1a	Rename and rework the error tools to Flow	2023-02-11 12:55:00 -05:00
Savanni D'Gerinel	c030b2d941	Start setting up the scanning loop	2023-02-11 12:54:58 -05:00
Savanni D'Gerinel	130b9f6c32	Remove a lot of the mpris test applications	2023-02-11 12:53:55 -05:00
Savanni D'Gerinel	3f6f8c453b	add gstreamer dependencies to the environment	2023-02-11 12:53:54 -05:00
Savanni D'Gerinel	f0ead7d422	Add a bunch of example dbus programs	2023-02-11 12:53:01 -05:00
Savanni D'Gerinel	4f01e1306e	Add an example gstreamer control	2023-02-11 12:53:01 -05:00
Savanni D'Gerinel	ae22d2191c	Add a license, build a tester for the media player	2023-02-11 12:52:59 -05:00
Savanni D'Gerinel	522f7eb65b	Add a tool to monitor and re-run the client build process The Javascript ecosystem is rubbish.	2023-02-11 12:50:07 -05:00
Savanni D'Gerinel	d601c8feeb	Rework the build. Switches to using NPM entirely for dependencies. That allows me to delete lodash from the repository while leaving the dependency in place. I lose the automatic rebuilds.	2023-02-11 12:49:41 -05:00
Savanni D'Gerinel	dfd755ed0a	Set up a prototype UI	2023-02-11 12:49:41 -05:00
Savanni D'Gerinel	1f8a0215dc	Bare minimum test app with one library	2023-02-11 12:49:37 -05:00
Savanni D'Gerinel	2857982b82	Add copyright notice to all source files	2023-02-06 09:52:45 -05:00
Savanni D'Gerinel	d7108d0355	Put the GPL-3 on all of my cargo files	2023-02-06 09:50:09 -05:00
Savanni D'Gerinel	cca1b9c3ba	Add the copyright notice to the readme	2023-02-06 09:41:40 -05:00
Savanni D'Gerinel	a8d8210252	Add the copyright notice to the hex-grid main	2023-02-06 09:39:04 -05:00
Savanni D'Gerinel	214463f6b4	Import my hex-grid project	2023-02-06 09:36:02 -05:00
Savanni D'Gerinel	411e0261fc	Update the project dependencies	2023-02-06 09:25:50 -05:00
Savanni D'Gerinel	12e9067c14	Add the GPL to the project	2023-02-06 09:25:11 -05:00