94 lines
3.2 KiB
Rust
94 lines
3.2 KiB
Rust
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/*
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Copyright 2023, Savanni D'Gerinel <savanni@luminescent-dreams.com>
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This file is part of FitnessTrax.
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FitnessTrax is free software: you can redistribute it and/or modify it under the terms of the GNU
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General Public License as published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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FitnessTrax is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
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even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License along with FitnessTrax. If not, see <https://www.gnu.org/licenses/>.
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*/
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use emseries::Series;
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use ft_core::TraxRecord;
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use std::{
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path::{Path, PathBuf},
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sync::{Arc, RwLock},
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};
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/// Invocations are how parts of the application, primarily the UI, will send requests to the core.
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#[derive(Debug)]
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pub enum AppInvocation {
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/// Tell the core to try to open a database.
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OpenDatabase(PathBuf),
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/// Request a set of records from the core.
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// Note: this will require a time range, but doesn't yet.
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RequestRecords,
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}
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/// Responses are messages that the core sends to the UI. Though they are called responses, the
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/// could actually be pre-emptively sent, such as notifications. The UI will need to be able to
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/// process those any time they arrive.
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///
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/// A typical use would be for the UI to send an [AppInvocation::RequestRecords] request and
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/// receive [AppResponse::Records].
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#[derive(Debug)]
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pub enum AppResponse {
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/// No database is available. The UI should typically display a placeholder, such as the
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/// welcome view.
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NoDatabase,
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/// The database is open and here is a set of records. Typically, the set of records will be
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/// all of the records within a time frame, but this can actually be any set of records.
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Records,
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/// The database has been changed. This message is useful for telling the UI that a significant
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/// change has happened. Further, the UI needs to save PathBuf to settings, because the
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/// gio::Settings system can't be run in the fully async background.
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DatabaseChanged(PathBuf),
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}
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/// The real, headless application. This is where all of the logic will reside.
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#[derive(Clone)]
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pub struct App {
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database: Arc<RwLock<Option<Series<TraxRecord>>>>,
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}
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impl App {
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pub fn new(db_path: Option<PathBuf>) -> Self {
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let database = db_path.map(|path| Series::open(path).unwrap());
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let s = Self {
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database: Arc::new(RwLock::new(database)),
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};
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s
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}
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pub async fn process_invocation(&self, invocation: AppInvocation) -> AppResponse {
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match invocation {
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AppInvocation::OpenDatabase(db_path) => {
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self.open_db(&db_path);
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AppResponse::DatabaseChanged(db_path)
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}
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AppInvocation::RequestRecords => {
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if self.database.read().unwrap().is_none() {
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AppResponse::NoDatabase
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} else {
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AppResponse::Records
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}
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}
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}
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}
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fn open_db(&self, path: &Path) {
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let db = Series::open(path).unwrap();
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*self.database.write().unwrap() = Some(db);
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}
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}
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