First working monolith version with audio playback

src/client.rs

@@ -1,15 +1,8 @@
-use std::{
-    error::Error,
-    sync::{Arc, Mutex},
-    time::Duration,
-};
+use std::{error::Error, time::Duration};
 
 use crate::CliArgs;
 
-use self::{
-    app::{App, AppOptions},
-    request_queue::request_queue_cleaner,
-};
+use self::app::{App, AppOptions};
 
 pub mod app;
 pub mod crossterm;
@@ -17,29 +10,11 @@ pub mod request_queue;
 pub mod ui;
 
 pub fn run(args: CliArgs) -> Result<(), Box<dyn Error>> {
-    let message_queue = Arc::new(Mutex::new(vec![]));
-    let server_state = Arc::new(Mutex::new(None));
     let options = AppOptions {
         title: "rmp - Rust Music Player".into(),
         enhanced_graphics: args.enhanced_graphics,
-        sync_state: args.sync_state,
     };
-    let app = App {
-        options,
-        should_quit: false,
-        state: server_state.clone(),
-        message_queue: message_queue.clone(),
-    };
-    let thread_builder = std::thread::Builder::new().name("request_queue".into());
-    thread_builder
-        .spawn(move || {
-            request_queue_cleaner(
-                Duration::from_millis(args.message_rate),
-                message_queue.clone(),
-                server_state.clone(),
-            )
-        })
-        .unwrap();
+    let app = App::new(options);
     crossterm::run(app, Duration::from_millis(args.tick_rate))?;
     Ok(())
 }

src/client/app.rs

@@ -1,25 +1,18 @@
-use std::{
-    path::PathBuf,
-    sync::{Arc, Mutex},
-    time::Duration,
-};
+use std::{path::PathBuf, time::Duration};
 
-use rmp::{
-    protocol::{Message, MessageType},
-    ServerState,
-};
-use serde::Serialize;
+use crate::server::playback::Playback;
+
+use rmp::TrackChangeOptions;
 
 pub struct App {
     pub options: AppOptions,
     pub should_quit: bool,
-    pub message_queue: Arc<Mutex<Vec<Message>>>,
-    pub state: Arc<Mutex<Option<ServerState>>>,
+    pub playback: Playback,
+    pub track_change_options: TrackChangeOptions,
 }
 
 pub struct AppOptions {
     pub title: String,
-    pub sync_state: bool,
     pub enhanced_graphics: bool,
 }
 
@@ -28,74 +21,29 @@ impl App {
         Self {
             options,
             should_quit: false,
-            message_queue: Arc::new(Mutex::new(vec![])),
-            state: Arc::new(Mutex::new(None)),
+            playback: Playback::new(),
+            track_change_options: Default::default(),
         }
     }
 
-    fn push_message(&mut self, message: Message) {
-        self.message_queue.lock().unwrap().push(message);
-    }
-
-    fn map_and_serialize<F, T>(&mut self, f: F) -> Option<Vec<u8>>
-    where
-        F: FnOnce(&ServerState) -> Option<T>,
-        T: Serialize,
-    {
-        let data = self.state.lock().unwrap().as_ref().and_then(f);
-        data.map(|data| bincode::serialize(&data).unwrap())
-    }
-
-    pub fn connected(&self) -> bool {
-        self.state.lock().unwrap().is_some()
-    }
-
     pub fn toggle_shuffle(&mut self) {
-        let body = self.map_and_serialize(|state| Some(!state.playlist_params.shuffle));
-        self.push_message(Message {
-            message_type: MessageType::SetShuffle,
-            body,
-        })
+        self.track_change_options.shuffle = !self.track_change_options.shuffle;
     }
 
     pub fn toggle_next(&mut self) {
-        let body = self.map_and_serialize(|state| Some(!state.playlist_params.next));
-        self.push_message(Message {
-            message_type: MessageType::SetNext,
-            body,
-        })
+        self.track_change_options.next = !self.track_change_options.next;
     }
 
     pub fn toggle_repeat(&mut self) {
-        let body = self.map_and_serialize(|state| Some(!state.playlist_params.repeat));
-        self.push_message(Message {
-            message_type: MessageType::SetRepeat,
-            body,
-        })
+        self.track_change_options.repeat = !self.track_change_options.repeat;
     }
 
     pub fn toggle_pause(&mut self) {
-        let body =
-            self.map_and_serialize(|state| state.player.as_ref().map(|player| !player.is_paused));
-        self.push_message(Message {
-            message_type: MessageType::SetPause,
-            body,
-        });
-    }
-
-    pub fn fetch_state(&mut self) {
-        self.push_message(Message {
-            message_type: MessageType::StateFetch,
-            body: None,
-        });
+        self.playback.toggle_pause();
     }
 
     pub fn play(&mut self, track: PathBuf) {
-        let body = self.map_and_serialize(|_state| Some(track));
-        self.push_message(Message {
-            message_type: MessageType::PlayTrackFromPath,
-            body,
-        });
+        self.playback.play_immediate(track);
     }
 
     pub fn on_key(&mut self, key: char) {
@@ -123,12 +71,5 @@ impl App {
 
     pub fn on_tab(&mut self) {}
 
-    pub fn on_tick(&mut self, _duration: Duration) {
-        if self.options.sync_state {
-            self.push_message(Message {
-                message_type: MessageType::StateFetch,
-                body: None,
-            });
-        }
-    }
+    pub fn on_tick(&mut self, _duration: Duration) {}
 }

src/client/crossterm.rs

@@ -33,7 +33,7 @@ pub fn run(app: App, tick_rate: Duration) -> Result<(), Box<dyn Error>> {
     terminal.show_cursor()?;
 
     if let Err(err) = res {
-        println!("{err:?}");
+        eprintln!("{err:?}");
     }
 
     Ok(())
@@ -54,7 +54,6 @@ fn run_app<B: Backend>(
         if crossterm::event::poll(timeout)? {
             if let Event::Key(key) = event::read()? {
                 if key.kind == KeyEventKind::Press {
-                    if app.connected() {
                     match key.code {
                         KeyCode::Char(c) => app.on_key(c),
                         KeyCode::Left => app.on_left(),
@@ -65,17 +64,6 @@ fn run_app<B: Backend>(
                         KeyCode::Tab => app.on_tab(),
                         _ => {}
                     }
-                    } else {
-                        // Allow quitting while in "Not connected" screen
-                        match key.code {
-                            KeyCode::Char(c) => {
-                                if c == 'q' {
-                                    app.should_quit = true;
-                                }
-                            }
-                            _ => (),
-                        }
-                    }
                 }
             }
         }

src/client/ui.rs

@@ -2,20 +2,15 @@ use ratatui::{
     prelude::*,
     widgets::{block::Title, *},
 };
-use rmp::ServerState;
 
 use super::app::App;
 
 pub fn draw<B: Backend>(f: &mut Frame<B>, app: &mut App) {
-    if let Some(state) = app.state.lock().unwrap().as_ref() {
     let chunks = Layout::default()
         .constraints([Constraint::Min(3), Constraint::Length(2)].as_ref())
         .split(f.size());
-        draw_playlist(f, state, chunks[0]);
-        draw_player(f, state, chunks[1]);
-    } else {
-        draw_no_connection(f);
-    }
+    draw_playlist(f, app, chunks[0]);
+    draw_player(f, app, chunks[1]);
 }
 
 static PRIMARY_COLOR: Color = Color::Rgb(200, 150, 70);
@@ -47,7 +42,7 @@ fn draw_no_connection<B: Backend>(f: &mut Frame<B>) {
     );
 }
 
-fn draw_playlist<B: Backend>(f: &mut Frame<B>, _state: &ServerState, area: Rect) {
+fn draw_playlist<B: Backend>(f: &mut Frame<B>, _app: &App, area: Rect) {
     let playlist = List::new(vec![])
         .block(
             Block::default()
@@ -58,11 +53,11 @@ fn draw_playlist<B: Backend>(f: &mut Frame<B>, _state: &ServerState, area: Rect)
     f.render_widget(playlist, area);
 }
 
-fn draw_player<B: Backend>(f: &mut Frame<B>, state: &ServerState, area: Rect) {
+fn draw_player<B: Backend>(f: &mut Frame<B>, app: &App, area: Rect) {
     fn decorate_bool(span: Span, value: bool) -> Span {
         match value {
-            true => return span.bg(PRIMARY_COLOR).fg(PRIMARY_CONTRAST),
-            false => return span.fg(CLEAR_CONTRAST),
+            true => span.bg(PRIMARY_COLOR).fg(PRIMARY_CONTRAST),
+            false => span.fg(CLEAR_CONTRAST),
         }
     }
 
@@ -80,7 +75,7 @@ fn draw_player<B: Backend>(f: &mut Frame<B>, state: &ServerState, area: Rect) {
     // Horrible to look at, worse to write
     let param_titles: Vec<Title> = vec![
         (
-            state.playlist_params.next,
+            app.track_change_options.next,
             vec![
                 Span::from("NE"),
                 Span::from("X").underlined(),
@@ -88,11 +83,11 @@ fn draw_player<B: Backend>(f: &mut Frame<B>, state: &ServerState, area: Rect) {
             ],
         ),
         (
-            state.playlist_params.shuffle,
+            app.track_change_options.shuffle,
             vec![Span::from("S").underlined(), Span::from("HUFFLE")],
         ),
         (
-            state.playlist_params.repeat,
+            app.track_change_options.repeat,
             vec![Span::from("R").underlined(), Span::from("EPEAT")],
         ),
     ]

src/lib.rs

@@ -1,4 +1,4 @@
-use std::path::PathBuf;
+use std::{path::PathBuf, str::FromStr};
 
 use serde::{Deserialize, Serialize};
 
@@ -9,7 +9,7 @@ pub mod protocol;
 
 #[derive(Serialize, Deserialize, Debug, Default)]
 pub struct ServerState {
-    pub playlist_params: PlaylistParams,
+    pub track_change_options: TrackChangeOptions,
     pub player: Option<PlayerState>,
 }
 
@@ -48,13 +48,13 @@ pub struct QueuePlaylist {
 }
 
 #[derive(Serialize, Deserialize, Debug)]
-pub struct PlaylistParams {
+pub struct TrackChangeOptions {
     pub shuffle: bool,
     pub next: bool,
     pub repeat: bool,
 }
 
-impl Default for PlaylistParams {
+impl Default for TrackChangeOptions {
     fn default() -> Self {
         Self {
             shuffle: false,
@@ -64,6 +64,26 @@ impl Default for PlaylistParams {
     }
 }
 
+#[derive(Clone, Copy, Debug, Default)]
+pub enum LogLevel {
+    Quiet = 0,
+    Error = 1,
+    #[default]
+    All = 2,
+}
+
+impl FromStr for LogLevel {
+    type Err = ();
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "quiet" => Ok(Self::Quiet),
+            "error" => Ok(Self::Error),
+            "all" => Ok(Self::All),
+            _ => Err(()),
+        }
+    }
+}
+
 pub mod server {
     use std::{fmt::Debug, path::PathBuf};
 

src/main.rs

@@ -4,7 +4,7 @@ pub mod client;
 pub mod server;
 
 /// rmp: Rust Music Player
-#[derive(Debug, FromArgs)]
+#[derive(Debug, FromArgs, Clone)]
 pub struct CliArgs {
     /// run the server
     #[argh(switch, short = 's')]
@@ -45,27 +45,14 @@ pub struct CliArgs {
     /// whether unicode symbols are used to improve the overall look of the app
     #[argh(option, default = "true")]
     enhanced_graphics: bool,
+
+    /// server-side log level (quiet, error, all)
+    #[argh(option)]
+    log_level: Option<String>,
 }
 
 fn main() {
     let args: CliArgs = argh::from_env();
 
-    if args.exit {
-        server::kill();
-        return;
-    }
-
-    if args.server {
-        if server::is_running().unwrap() {
-            println!("Server is already running");
-        } else {
-            server::run(args).unwrap();
-        }
-        return;
-    }
-
-    if !args.client_only && !server::is_running().unwrap() {
-        server::run_in_background();
-    }
     client::run(args).unwrap();
 }

src/server.rs

@@ -1,36 +1,14 @@
-use interprocess::local_socket::{LocalSocketListener, LocalSocketStream};
-
-use rmp::{
-    os,
-    protocol::{Message, MessageType},
-    server::ServerError,
-    PlaylistParams, ServerState,
-};
-use std::{
-    fs,
-    path::PathBuf,
-    sync::{Arc, Mutex},
-};
+use rmp::{os, server::ServerError, ServerState, TrackChangeOptions};
+use std::sync::{Arc, Mutex};
 
 use crate::CliArgs;
 
-use self::playback::{playback_manager, Playback};
-
 pub mod decoder;
 pub mod playback;
 
+#[derive(Default)]
 pub struct Server {
     pub state: ServerState,
-    pub playback: Playback,
-}
-
-impl Server {
-    pub fn from_state(state: ServerState) -> Self {
-        Self {
-            state,
-            playback: Default::default(),
-        }
-    }
 }
 
 pub fn run(args: CliArgs) -> Result<(), ServerError> {
@@ -39,22 +17,19 @@ pub fn run(args: CliArgs) -> Result<(), ServerError> {
         std::process::exit(exit_code);
     }
 
-    let server = Arc::new(Mutex::new(Server::from_state(ServerState {
-        playlist_params: PlaylistParams {
+    let server = Arc::new(Mutex::new(Server {
+        state: ServerState {
+            track_change_options: TrackChangeOptions {
                 shuffle: args.shuffle,
                 next: args.next,
                 repeat: args.repeat,
             },
             player: None,
-    })));
+        },
+        ..Default::default()
+    }));
 
-    let server_clone = server.clone();
-    std::thread::Builder::new()
-        .name("playback_manager".into())
-        .spawn(move || playback_manager(server_clone))
-        .unwrap();
-
-    serve(server)
+    Ok(())
 }
 
 pub fn kill() {
@@ -81,74 +56,6 @@ pub fn run_in_background() {
     }
 }
 
-fn serve(server: Arc<Mutex<Server>>) -> Result<(), ServerError> {
-    let socket_path = os::server::get_socket_path()?;
-    if socket_path.exists() {
-        fs::remove_file(&socket_path).map_err(|err| ServerError::Io(err))?;
-    }
-    let socket = LocalSocketListener::bind(socket_path).map_err(|err| ServerError::Io(err))?;
-    println!("Waiting for connections...");
-    let mut session_counter = 0;
-    for message in socket.incoming() {
-        match message {
-            Ok(stream) => {
-                session_counter += 1;
-                let thread_builder =
-                    std::thread::Builder::new().name(format!("session_{session_counter}"));
-                let server = server.clone();
-                thread_builder
-                    .spawn(move || session_handler(stream, server))
-                    .unwrap();
-            }
-            Err(err) => {
-                let exit_code = handle_error(ServerError::Io(err));
-                std::process::exit(exit_code);
-            }
-        };
-    }
-    println!("Reached the end of an infinite loop?");
-    Ok(())
-}
-
-fn session_handler(mut stream: LocalSocketStream, server: Arc<Mutex<Server>>) {
-    let thread = std::thread::current();
-    let session_id = thread.name().unwrap_or("<unnamed>");
-    println!("[{session_id}] session created");
-    loop {
-        match rmp::protocol::receive(&mut stream) {
-            Ok(message) => {
-                println!("[{session_id}] rx {message}");
-                match route_request(&message, &mut server.lock().unwrap()) {
-                    Err(err) => {
-                        eprintln!("[{session_id}] rx Error: {err}");
-                    }
-                    Ok(response) => {
-                        println!("[{session_id}] tx {response}");
-                        rmp::protocol::send(&mut stream, &response).unwrap();
-                    }
-                }
-            }
-            Err(error) => match error {
-                rmp::protocol::MessageError::ReadError => {
-                    println!("[{session_id}] session terminated");
-                    return;
-                }
-                error => {
-                    eprintln!("[{session_id}] rx Error {error:?}");
-                    let body = bincode::serialize(&error).unwrap();
-                    // TODO: Server-side error logging so internal error data is not sent to client
-                    let message = Message {
-                        message_type: MessageType::ProtocolError,
-                        body: Some(body),
-                    };
-                    eprintln!("[{session_id}] tx {message}");
-                    rmp::protocol::send(&mut stream, &message).unwrap();
-                }
-            },
-        }
-    }
-}
-
 fn handle_error(err: ServerError) -> i32 {
     match &err {
         ServerError::Other(msg) => {
@@ -173,81 +80,3 @@ fn handle_error(err: ServerError) -> i32 {
         }
     }
 }
-
-fn route_request(request: &Message, server: &mut Server) -> Result<Message, String> {
-    match request.message_type {
-        MessageType::StateFetch => {}
-        MessageType::SetNext => {
-            let body = match request.body.as_ref() {
-                Some(body) => body,
-                None => {
-                    return Ok(Message {
-                        message_type: MessageType::ApplicationError,
-                        body: None,
-                    })
-                }
-            };
-            let new_state: bool = bincode::deserialize(&body).map_err(|err| err.to_string())?;
-            server.state.playlist_params.next = new_state;
-        }
-        MessageType::SetShuffle => {
-            let body = match request.body.as_ref() {
-                Some(body) => body,
-                None => {
-                    return Ok(Message {
-                        message_type: MessageType::ApplicationError,
-                        body: None,
-                    })
-                }
-            };
-            let new_state: bool = bincode::deserialize(&body).map_err(|err| err.to_string())?;
-            server.state.playlist_params.shuffle = new_state;
-        }
-        MessageType::SetRepeat => {
-            let body = match request.body.as_ref() {
-                Some(body) => body,
-                None => {
-                    return Ok(Message {
-                        message_type: MessageType::ApplicationError,
-                        body: None,
-                    })
-                }
-            };
-            let new_state: bool = bincode::deserialize(&body).map_err(|err| err.to_string())?;
-            server.state.playlist_params.repeat = new_state;
-        }
-        MessageType::SetPause => {
-            let body = match request.body.as_ref() {
-                Some(body) => body,
-                None => {
-                    return Ok(Message {
-                        message_type: MessageType::ApplicationError,
-                        body: None,
-                    })
-                }
-            };
-            let new_state: bool = bincode::deserialize(&body).map_err(|err| err.to_string())?;
-            server.playback.pause(new_state);
-        }
-        MessageType::PlayTrackFromPath => {
-            let body = match request.body.as_ref() {
-                Some(body) => body,
-                None => {
-                    return Ok(Message {
-                        message_type: MessageType::ApplicationError,
-                        body: None,
-                    })
-                }
-            };
-            let body: PathBuf = bincode::deserialize(&body).map_err(|err| err.to_string())?;
-            server.playback.play(body);
-        }
-        _ => {
-            return Ok(Message {
-                message_type: MessageType::NotImplementedAck,
-                body: None,
-            })
-        }
-    }
-    Message::state_response(&server.state)
-}

src/server/playback.rs

@@ -1,108 +1,79 @@
-use std::{
-    borrow::BorrowMut,
-    fs::File,
-    path::PathBuf,
-    sync::{Arc, Mutex},
-};
+use std::{fs::File, path::PathBuf};
 
-use rmp::PlayerState;
-use rodio::{OutputStream, Sink};
+use rodio::{OutputStream, OutputStreamHandle, Sink};
 
-use super::{
-    decoder::{Decoder, DecoderImpl, SourceWrapper},
-    Server,
-};
-
-// HACK: hard-coded path to track
-static TRACK: &str = "";
-
-enum PlaybackCommand {
-    PlayPath(PathBuf),
-    SetPause(bool),
-}
+use super::decoder::{Decoder, DecoderImpl, SourceWrapper};
 
 pub struct Playback {
-    command_queue: Vec<PlaybackCommand>,
+    /// These must not be dropped before the sink
+    _stream: OutputStream,
+    _stream_handle: OutputStreamHandle,
+    sink: Sink,
 }
 
-impl Default for Playback {
-    fn default() -> Self {
-        Self {
-            command_queue: vec![],
-        }
-    }
+pub enum PlaybackState {
+    Empty,
+    Playing,
+    Paused,
 }
 
 impl Playback {
-    pub fn play(&mut self, path: PathBuf) {
-        self.command_queue
-            .push(PlaybackCommand::PlayPath(TRACK.into())) // TODO: Remove hardcoding
+    pub fn new() -> Self {
+        let (_stream, _stream_handle) = OutputStream::try_default().unwrap();
+        let sink: Sink = Sink::try_new(&_stream_handle).unwrap();
+
+        Self {
+            _stream,
+            _stream_handle,
+            sink,
+        }
     }
 
-    pub fn pause(&mut self, new_state: bool) {
-        self.command_queue
-            .push(PlaybackCommand::SetPause(new_state))
+    pub fn get_state(&self) -> PlaybackState {
+        // TODO: We know if it's playing but not what is playing. Figure it out later
+        if self.sink.empty() {
+            return PlaybackState::Empty;
+        }
+        match self.sink.is_paused() {
+            true => PlaybackState::Paused,
+            false => PlaybackState::Playing,
+        }
     }
-}
 
-pub fn playback_manager(server: Arc<Mutex<Server>>) {
-    let (_stream, stream_handle) = OutputStream::try_default().unwrap();
-    let sink: Sink = Sink::try_new(&stream_handle).unwrap();
-    loop {
-        let mut server = server.lock().unwrap();
-        let commands: Vec<PlaybackCommand> = server.playback.command_queue.drain(..).collect();
-        for command in commands {
-            match command {
-                PlaybackCommand::PlayPath(track) => {
+    /// Clear the queue and start playback immediately.
+    pub fn play_immediate(&mut self, path: PathBuf) {
         let mut source: Option<Box<dyn DecoderImpl<Item = i16>>> = None;
 
         {
-                        let file = File::open(&track).unwrap();
+            let file = File::open(&path).unwrap();
             if let Ok(decoder) = Decoder::rodio(SourceWrapper::from_file(file)) {
-                            println!("playback: rodio\n\tsample_rate: {:?}\n\ttotal_duration: {:?}\n\tchannels: {:?}\n\tcurrent_frame_len: {:?}", decoder.sample_rate(), decoder.total_duration(), decoder.channels(), decoder.current_frame_len());
                 source = Some(decoder);
             };
         }
 
         if source.is_none() {
-                        let file = File::open(&track).unwrap();
+            let file = File::open(&path).unwrap();
             if let Ok(decoder) = Decoder::custom(SourceWrapper::from_file(file)) {
-                            println!("playback: custom\n\tsample_rate: {:?}\n\ttotal_duration: {:?}\n\tchannels: {:?}\n\tcurrent_frame_len: {:?}", decoder.sample_rate(), decoder.total_duration(), decoder.channels(), decoder.current_frame_len());
                 source = Some(decoder);
             }
         }
 
         match source {
             Some(source) => {
-                            server.state.player = Some(PlayerState {
-                                track,
-                                is_paused: false,
-                                duration: None,
-                                current_position: None,
-                            });
-                            sink.clear();
-                            sink.append(source);
-                            sink.play();
-                        }
-                        None => println!("No handler found for '{track:?}'"),
-                    }
-                }
-                PlaybackCommand::SetPause(new_state) => {
-                    if !sink.empty() && new_state != sink.is_paused() {
-                        if sink.is_paused() {
-                            sink.play();
-                            if let Some(player) = server.state.player.borrow_mut() {
-                                player.is_paused = false;
-                            }
-                        } else {
-                            sink.pause();
-                            if let Some(player) = server.state.player.borrow_mut() {
-                                player.is_paused = true;
-                            }
-                        }
+                self.sink.clear();
+                self.sink.append(source);
+                self.sink.play();
             }
+            None => eprintln!("No handler found for '{path:?}'"),
         }
     }
+
+    /// Toggle playback pause if possible.
+    pub fn toggle_pause(&mut self) {
+        match self.get_state() {
+            PlaybackState::Empty => (),
+            PlaybackState::Playing => self.sink.pause(),
+            PlaybackState::Paused => self.sink.play(),
         }
     }
 }