Added directory playlist and simple queue management

Cargo.toml

@@ -7,12 +7,8 @@ edition = "2021"
 
 [dependencies]
 argh = "0.1.12"
-bincode = "1.3.3"
-crc32fast = "1.3.2"
 crossterm = "0.27.0"
-interprocess = "1.2.1"
 opus = "0.3.0"
 ratatui = "0.23.0"
-rodio = {version = "0.17.3", features = [ "symphonia-all" ], default-features = false }
-serde = "1.0.196"
+rodio = { version = "0.17.3", features = [ "symphonia-all" ], default-features = false }
 symphonia = "0.5.4"

src/app.rs

@@ -0,0 +1,137 @@
+use std::{path::PathBuf, time::Duration};
+
+use rmp::{DirectoryPlaylist, PlaylistElement, QueuePlaylist, StatefulList, TrackChangeOptions};
+
+use crate::playback::Playback;
+
+pub struct AppOptions {
+    pub title: String,
+    pub enhanced_graphics: bool,
+}
+
+pub struct App {
+    pub options: AppOptions,
+    pub should_quit: bool,
+    pub playback: Playback,
+    pub track_change_options: TrackChangeOptions,
+    pub focus: AppWindow,
+    pub directory_playlist: DirectoryPlaylist,
+    pub queue_playlist: QueuePlaylist,
+}
+
+#[derive(Clone, Copy, Debug, Default)]
+pub enum AppWindow {
+    #[default]
+    DirectoryPlaylist,
+    QueuePlaylist,
+}
+
+impl App {
+    pub fn new(options: AppOptions) -> Self {
+        Self {
+            options,
+            should_quit: false,
+            playback: Playback::new(),
+            track_change_options: Default::default(),
+            focus: Default::default(),
+            directory_playlist: DirectoryPlaylist::read_directory(
+                format!("{}/Music/Ultra Bra", std::env::var("HOME").unwrap()).into(),
+            )
+            .unwrap(),
+            queue_playlist: Default::default(),
+        }
+    }
+
+    pub fn focused_window(&self) -> &StatefulList<PlaylistElement> {
+        match &self.focus {
+            AppWindow::DirectoryPlaylist => &self.directory_playlist.playlist,
+            AppWindow::QueuePlaylist => &self.queue_playlist.playlist,
+        }
+    }
+
+    pub fn focused_window_mut(&mut self) -> &mut StatefulList<PlaylistElement> {
+        match &mut self.focus {
+            AppWindow::DirectoryPlaylist => &mut self.directory_playlist.playlist,
+            AppWindow::QueuePlaylist => &mut self.queue_playlist.playlist,
+        }
+    }
+
+    pub fn toggle_shuffle(&mut self) {
+        self.track_change_options.shuffle = !self.track_change_options.shuffle;
+    }
+
+    pub fn toggle_next(&mut self) {
+        self.track_change_options.next = !self.track_change_options.next;
+    }
+
+    pub fn toggle_repeat(&mut self) {
+        self.track_change_options.repeat = !self.track_change_options.repeat;
+    }
+
+    pub fn toggle_pause(&mut self) {
+        self.playback.toggle_pause();
+    }
+
+    pub fn play(&mut self, track: PathBuf) {
+        self.playback.play_immediate(track);
+    }
+
+    pub fn add_selected_to_queue(&mut self) {
+        // TODO: Fix this mess, add some arguments
+        if let AppWindow::DirectoryPlaylist = self.focus {
+            if let Some(selected) = self.directory_playlist.playlist.current() {
+                self.queue_playlist.playlist.items.push(selected.clone());
+            }
+        }
+    }
+
+    pub fn remove_selected_from_queue(&mut self) {
+        // TODO: Fix this mess, add some arguments
+        if let AppWindow::QueuePlaylist = self.focus {
+            if let Some(cursor) = self.queue_playlist.playlist.state.selected() {
+                self.queue_playlist.playlist.items.remove(cursor);
+            }
+        }
+    }
+
+    pub fn on_key(&mut self, key: char) {
+        match key {
+            'S' => self.toggle_shuffle(),
+            'X' => self.toggle_next(),
+            'R' => self.toggle_repeat(),
+            ' ' => self.toggle_pause(),
+            'a' => self.add_selected_to_queue(),
+            'd' => self.remove_selected_from_queue(),
+            'q' => self.should_quit = true,
+            _ => (),
+        }
+    }
+
+    pub fn on_left(&mut self) {}
+
+    pub fn on_right(&mut self) {}
+
+    pub fn on_up(&mut self) {
+        self.focused_window_mut().previous();
+    }
+
+    pub fn on_down(&mut self) {
+        self.focused_window_mut().next();
+    }
+
+    pub fn on_enter(&mut self) {
+        // TODO: Handle directory navigation
+        if let Some(current) = self.focused_window().current() {
+            self.play(current.into());
+        }
+    }
+
+    pub fn on_tab(&mut self) {
+        self.focus = match self.focus {
+            AppWindow::QueuePlaylist => AppWindow::DirectoryPlaylist,
+            AppWindow::DirectoryPlaylist => AppWindow::QueuePlaylist,
+        }
+    }
+
+    pub fn on_tick(&mut self, _duration: Duration) {}
+}

src/client.rs

@@ -1,45 +1,16 @@
-use std::{
-    error::Error,
-    sync::{Arc, Mutex},
-    time::Duration,
-};
+use std::{error::Error, time::Duration};
 
-use crate::CliArgs;
-
-use self::{
+use crate::{
     app::{App, AppOptions},
-    request_queue::request_queue_cleaner,
+    crossterm, CliArgs,
 };
 
-pub mod app;
-pub mod crossterm;
-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

@@ -1,134 +0,0 @@
-use std::{
-    path::PathBuf,
-    sync::{Arc, Mutex},
-    time::Duration,
-};
-
-use rmp::{
-    protocol::{Message, MessageType},
-    ServerState,
-};
-use serde::Serialize;
-
-pub struct App {
-    pub options: AppOptions,
-    pub should_quit: bool,
-    pub message_queue: Arc<Mutex<Vec<Message>>>,
-    pub state: Arc<Mutex<Option<ServerState>>>,
-}
-
-pub struct AppOptions {
-    pub title: String,
-    pub sync_state: bool,
-    pub enhanced_graphics: bool,
-}
-
-impl App {
-    pub fn new(options: AppOptions) -> Self {
-        Self {
-            options,
-            should_quit: false,
-            message_queue: Arc::new(Mutex::new(vec![])),
-            state: Arc::new(Mutex::new(None)),
-        }
-    }
-
-    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,
-        })
-    }
-
-    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,
-        })
-    }
-
-    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,
-        })
-    }
-
-    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,
-        });
-    }
-
-    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,
-        });
-    }
-
-    pub fn on_key(&mut self, key: char) {
-        match key {
-            'S' => self.toggle_shuffle(),
-            'X' => self.toggle_next(),
-            'R' => self.toggle_repeat(),
-            ' ' => self.toggle_pause(),
-            'q' => self.should_quit = true,
-            _ => (),
-        }
-    }
-
-    pub fn on_left(&mut self) {}
-
-    pub fn on_right(&mut self) {}
-
-    pub fn on_up(&mut self) {}
-
-    pub fn on_down(&mut self) {}
-
-    pub fn on_enter(&mut self) {
-        self.play("".into()); // TODO: Remove hardcoding
-    }
-
-    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,
-            });
-        }
-    }
-}

src/client/request_queue.rs

@@ -1,92 +0,0 @@
-use std::{
-    sync::{Arc, Mutex},
-    time::{Duration, Instant},
-};
-
-use interprocess::local_socket::LocalSocketStream;
-use rmp::{
-    protocol::{self, Message, MessageError, MessageType},
-    ServerState,
-};
-
-pub fn request_queue_cleaner(
-    message_rate: Duration,
-    queue: Arc<Mutex<Vec<Message>>>,
-    state: Arc<Mutex<Option<ServerState>>>,
-) {
-    let mut last_tick = Instant::now();
-    let mut should_connect = true;
-    let mut stream: Option<LocalSocketStream> = None;
-    loop {
-        if should_connect {
-            *state.lock().unwrap() = None;
-            stream = Some(connect());
-            queue.lock().unwrap().push(Message {
-                message_type: MessageType::StateFetch,
-                body: None,
-            });
-            should_connect = false;
-        }
-        match stream.as_mut() {
-            Some(mut stream) => {
-                for request in queue.lock().unwrap().drain(..) {
-                    if let Err(_) = protocol::send(&mut stream, &request) {
-                        should_connect = true;
-                        continue;
-                    }
-                    if let Ok(response) = protocol::receive(&mut stream) {
-                        match route_response(&response, &mut state.lock().unwrap()) {
-                            Err(error) => {
-                                eprintln!("{error:?}")
-                            }
-                            _ => {}
-                        }
-                    }
-                }
-
-                let sleep_duration = message_rate
-                    .checked_sub(last_tick.elapsed())
-                    .unwrap_or_else(|| Duration::from_secs(0));
-                std::thread::sleep(sleep_duration);
-                last_tick = Instant::now();
-            }
-            None => should_connect = true,
-        }
-    }
-}
-
-/// Blocks thread until connected to socket
-fn connect() -> LocalSocketStream {
-    let path = rmp::os::server::get_socket_path().unwrap();
-    loop {
-        match LocalSocketStream::connect(path.clone()) {
-            Ok(stream) => return stream,
-            Err(_) => {}
-        }
-        std::thread::sleep(Duration::from_millis(100));
-    }
-}
-
-fn route_response(response: &Message, state: &mut Option<ServerState>) -> Result<(), String> {
-    match response.message_type {
-        MessageType::StateResponse => {
-            let body = response.body.as_ref().ok_or("Missing response body")?;
-            let response: ServerState =
-                bincode::deserialize(&body).map_err(|err| err.to_string())?;
-            *state = Some(response);
-        }
-        MessageType::NotImplementedAck => {
-            eprintln!("Server doesn't implement message")
-        }
-        MessageType::ProtocolError => {
-            let body = response.body.as_ref().ok_or("Missing response body")?;
-            let response: MessageError =
-                bincode::deserialize(&body).map_err(|err| err.to_string())?;
-            eprintln!("Server claims protocol error: {response:?}");
-        }
-        message_type => {
-            eprintln!("Message handling not implemented for client: {message_type:?}");
-        }
-    }
-    Ok(())
-}

src/client/ui.rs

@@ -1,122 +0,0 @@
-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);
-    }
-}
-
-static PRIMARY_COLOR: Color = Color::Rgb(200, 150, 70);
-static SECONDARY_COLOR: Color = Color::Rgb(200, 200, 200);
-
-static PRIMARY_CONTRAST: Color = Color::Black;
-static CLEAR_CONTRAST: Color = Color::Rgb(100, 100, 100);
-
-fn draw_no_connection<B: Backend>(f: &mut Frame<B>) {
-    let message = "Not connected";
-    let width = message.len() as u16 + 4;
-    let height = 3;
-
-    let x = (f.size().width as i16 - width as i16).max(0) as u16 / 2;
-    let y = (f.size().height as i16 - height as i16).max(0) as u16 / 2;
-
-    let area = Rect {
-        x,
-        y,
-        width: u16::min(width, f.size().width - x),
-        height: u16::min(height, f.size().height - y),
-    };
-    f.render_widget(
-        Paragraph::new(message)
-            .fg(SECONDARY_COLOR)
-            .block(Block::default().borders(Borders::ALL).fg(PRIMARY_COLOR))
-            .alignment(Alignment::Center),
-        area,
-    );
-}
-
-fn draw_playlist<B: Backend>(f: &mut Frame<B>, _state: &ServerState, area: Rect) {
-    let playlist = List::new(vec![])
-        .block(
-            Block::default()
-                .borders(Borders::ALL)
-                .border_style(Style::default().fg(SECONDARY_COLOR)),
-        )
-        .start_corner(Corner::TopLeft);
-    f.render_widget(playlist, area);
-}
-
-fn draw_player<B: Backend>(f: &mut Frame<B>, state: &ServerState, 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),
-        }
-    }
-
-    let track_title = vec![
-        Span::from("[ "),
-        Span::from("??").fg(PRIMARY_COLOR),
-        Span::from(" ]"),
-    ];
-
-    let mut block = Block::default()
-        .borders(Borders::TOP)
-        .border_style(Style::default().fg(SECONDARY_COLOR))
-        .title(track_title);
-
-    // Horrible to look at, worse to write
-    let param_titles: Vec<Title> = vec![
-        (
-            state.playlist_params.next,
-            vec![
-                Span::from("NE"),
-                Span::from("X").underlined(),
-                Span::from("T"),
-            ],
-        ),
-        (
-            state.playlist_params.shuffle,
-            vec![Span::from("S").underlined(), Span::from("HUFFLE")],
-        ),
-        (
-            state.playlist_params.repeat,
-            vec![Span::from("R").underlined(), Span::from("EPEAT")],
-        ),
-    ]
-    .iter()
-    .map(|(value, spans)| {
-        spans
-            .iter()
-            .map(|span| decorate_bool(span.clone(), *value))
-            .collect::<Vec<_>>()
-    })
-    .map(|spans| Title::from([&[Span::from(" ")], spans.as_slice(), &[Span::from(" ")]].concat()))
-    .collect();
-
-    for title in param_titles {
-        block = block.title(title);
-    }
-
-    let block = block.title_position(block::Position::Top);
-
-    let player = Gauge::default()
-        .block(block)
-        .gauge_style(Style::default().fg(PRIMARY_COLOR))
-        .ratio(0.25)
-        .label("[ PAUSED ]");
-
-    f.render_widget(player, area)
-}

src/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/decoder.rs

@@ -16,9 +16,9 @@ use symphonia::core::{
     probe::Hint,
 };
 
-mod opus;
+use self::opus::OpusDecoder;
 
-use crate::server::decoder::opus::OpusDecoder;
+mod opus;
 
 pub struct Decoder;
 

src/lib.rs

@@ -1,24 +1,102 @@
-use std::path::PathBuf;
+use std::{error::Error, ops::Deref, path::PathBuf};
 
-use serde::{Deserialize, Serialize};
-
-#[cfg(target_family = "unix")]
-#[path = "os_unix.rs"]
-pub mod os;
-pub mod protocol;
-
-#[derive(Serialize, Deserialize, Debug, Default)]
-pub struct ServerState {
-    pub playlist_params: PlaylistParams,
-    pub player: Option<PlayerState>,
+#[derive(Debug, Default, Clone, Eq, PartialEq, Hash)]
+pub struct ListState {
+    offset: usize,
+    selected: Option<usize>,
 }
 
-#[derive(Serialize, Deserialize, Debug, Default)]
-pub struct PlayerState {
-    pub track: PlaylistElement,
-    pub is_paused: bool,
-    pub duration: Option<f32>,
-    pub current_position: Option<f32>,
+impl ListState {
+    pub fn offset(&self) -> usize {
+        self.offset
+    }
+
+    pub fn offset_mut(&mut self) -> &mut usize {
+        &mut self.offset
+    }
+
+    pub fn with_selected(mut self, selected: Option<usize>) -> Self {
+        self.selected = selected;
+        self
+    }
+
+    pub fn with_offset(mut self, offset: usize) -> Self {
+        self.offset = offset;
+        self
+    }
+
+    pub fn selected(&self) -> Option<usize> {
+        self.selected
+    }
+
+    pub fn select(&mut self, index: Option<usize>) {
+        self.selected = index;
+        if index.is_none() {
+            self.offset = 0;
+        }
+    }
+}
+
+#[derive(Debug, Default)]
+pub struct StatefulList<T> {
+    pub state: ListState,
+    pub items: Vec<T>,
+}
+
+impl<T> StatefulList<T>
+where
+    T: Deref + Eq,
+{
+    pub fn with_items(items: Vec<T>) -> StatefulList<T> {
+        StatefulList {
+            state: ListState::default(),
+            items,
+        }
+    }
+
+    pub fn next(&mut self) {
+        let i = match self.state.selected() {
+            Some(i) => {
+                if i >= self.items.len() - 1 {
+                    0
+                } else {
+                    i + 1
+                }
+            }
+            None => 0,
+        };
+        self.state.select(Some(i));
+    }
+
+    pub fn previous(&mut self) {
+        let i = match self.state.selected() {
+            Some(i) => {
+                if i == 0 {
+                    self.items.len() - 1
+                } else {
+                    i - 1
+                }
+            }
+            None => 0,
+        };
+        self.state.select(Some(i));
+    }
+
+    pub fn index_of(&self, item: T) -> Option<usize> {
+        self.items.iter().position(|element| *element == item)
+    }
+
+    pub fn current(&self) -> Option<&T> {
+        self.state
+            .selected
+            .map_or(None, |index| self.items.get(index))
+    }
+
+    pub fn current_mut(&mut self) -> Option<&mut T> {
+        self.state
+            .selected
+            .map_or(None, |index| self.items.get_mut(index))
+    }
 }
 
 pub type PlaylistElement = PathBuf;
@@ -28,33 +106,39 @@ pub enum PlaylistType {
     Queue,
 }
 
-#[derive(Serialize, Deserialize, Debug, Default)]
-pub struct Playlist {
-    pub items: Vec<PlaylistElement>,
-    pub current: Option<usize>,
-}
-
-impl Playlist {}
-
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Debug)]
 pub struct DirectoryPlaylist {
     pub directory: PathBuf,
-    pub playlist: Playlist,
+    pub playlist: StatefulList<PlaylistElement>,
 }
 
-#[derive(Serialize, Deserialize, Debug, Default)]
+impl DirectoryPlaylist {
+    pub fn read_directory(path: PathBuf) -> Result<Self, Box<dyn Error>> {
+        let mut playlist: Vec<PlaylistElement> = vec![];
+        for entry in std::fs::read_dir(&path)? {
+            let entry = entry?;
+            playlist.push(entry.path());
+        }
+        Ok(Self {
+            directory: path,
+            playlist: StatefulList::with_items(playlist),
+        })
+    }
+}
+
+#[derive(Debug, Default)]
 pub struct QueuePlaylist {
-    pub playlist: Playlist,
+    pub playlist: StatefulList<PlaylistElement>,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
-pub struct PlaylistParams {
+#[derive(Debug)]
+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,

src/main.rs

@@ -1,47 +1,19 @@
 use argh::FromArgs;
 
+pub mod app;
 pub mod client;
-pub mod server;
+pub mod crossterm;
+pub mod decoder;
+pub mod playback;
+pub mod ui;
 
 /// rmp: Rust Music Player
-#[derive(Debug, FromArgs)]
+#[derive(Debug, FromArgs, Clone)]
 pub struct CliArgs {
-    /// run the server
-    #[argh(switch, short = 's')]
-    server: bool,
-
-    /// randomize next track?
-    #[argh(option, default = "false")]
-    shuffle: bool,
-
-    /// change track after the current one is finished?
-    #[argh(option, default = "true")]
-    next: bool,
-
-    /// repeat the playlist (or track if 'next' is disabled) after it's finished
-    #[argh(option, default = "true")]
-    repeat: bool,
-
-    /// kill server
-    #[argh(switch, short = 'x')]
-    exit: bool,
-
-    /// don't start server even if it's not running
-    #[argh(switch, short = 'c')]
-    client_only: bool,
-
     /// time in ms between two ticks.
     #[argh(option, default = "100")]
     tick_rate: u64,
 
-    /// interval in ms for clearing the request queue.
-    #[argh(option, default = "100")]
-    message_rate: u64,
-
-    /// should client automatically sync the server state? (used mainly for debugging)
-    #[argh(option, default = "true")]
-    sync_state: bool,
-
     /// whether unicode symbols are used to improve the overall look of the app
     #[argh(option, default = "true")]
     enhanced_graphics: bool,
@@ -50,22 +22,5 @@ pub struct CliArgs {
 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/os_unix.rs

@@ -1,102 +0,0 @@
-pub mod client {
-    use std::path::PathBuf;
-
-    pub fn get_music_dir() -> PathBuf {
-        PathBuf::from(std::env!("HOME")).join("Music")
-    }
-}
-
-pub mod server {
-    use std::{
-        fs,
-        path::{Path, PathBuf},
-        process::{id, Command, Stdio},
-    };
-
-    use crate::server::ServerError;
-
-    pub fn reserve_pid() -> Result<(), ServerError> {
-        let pid_path = get_pid_path()?;
-        is_running()?;
-
-        fs::write(&pid_path, id().to_string()).map_err(|err| ServerError::Io(err))?;
-        Command::new("chmod")
-            .args(&["600", &pid_path.to_string_lossy()])
-            .output()
-            .map_err(|err| ServerError::Io(err))?;
-        Ok(())
-    }
-
-    pub fn is_running() -> Result<bool, ServerError> {
-        let pid_path = get_pid_path()?;
-
-        match fs::read(&pid_path) {
-            Ok(old_pid) => {
-                let old_pid =
-                    String::from_utf8(old_pid).map_err(|err| ServerError::from_debuggable(err))?;
-                let old_pid = old_pid.trim();
-                Ok(Command::new("ps")
-                    .args(&["-p", old_pid])
-                    .stdout(Stdio::null())
-                    .stderr(Stdio::null())
-                    .status()
-                    .map_err(|err| ServerError::Io(err))?
-                    .success())
-            }
-            _ => Ok(false),
-        }
-    }
-
-    pub fn run_in_background() -> Result<(), ServerError> {
-        let this = std::env::args().next().unwrap();
-        Command::new(this)
-            .stdout(Stdio::null())
-            .stderr(Stdio::null())
-            .args(&["-s"])
-            .spawn()
-            .map_err(|err| ServerError::Io(err))?;
-        Ok(())
-    }
-
-    pub fn kill() -> Result<(), ServerError> {
-        let pid_path = get_pid_path()?;
-        let socket_path = get_socket_path()?;
-        let pid = fs::read(&pid_path).map_err(|_| ServerError::NotRunning)?;
-        let pid = String::from_utf8(pid).map_err(|err| ServerError::from_debuggable(err))?;
-        let pid = pid.trim();
-        Command::new("kill")
-            .arg(pid)
-            .spawn()
-            .map_err(|err| ServerError::Io(err))?;
-        Command::new("rm")
-            .args(&[
-                "-f",
-                &pid_path.to_string_lossy(),
-                &socket_path.to_string_lossy(),
-            ])
-            .spawn()
-            .map_err(|err| ServerError::Io(err))?;
-        Ok(())
-    }
-
-    pub fn get_socket_path() -> Result<PathBuf, ServerError> {
-        Ok(get_runtime_dir()?.join("rmp.socket"))
-    }
-
-    fn get_runtime_dir() -> Result<PathBuf, ServerError> {
-        let uid = String::from_utf8(
-            Command::new("id")
-                .arg("-u")
-                .output()
-                .map_err(|err| ServerError::Io(err))?
-                .stdout,
-        )
-        .map_err(|err| ServerError::from_debuggable(err))?;
-        let dir = Path::new("/run/user").join(uid.trim().to_string());
-        Ok(dir)
-    }
-
-    fn get_pid_path() -> Result<PathBuf, ServerError> {
-        Ok(get_runtime_dir()?.join("rmp.pid"))
-    }
-}

src/playback.rs

@@ -0,0 +1,80 @@
+use std::{fs::File, path::PathBuf};
+
+use rmp::PlaylistElement;
+use rodio::{OutputStream, OutputStreamHandle, Sink};
+
+use super::decoder::{Decoder, DecoderImpl, SourceWrapper};
+
+pub struct Playback {
+    /// These must not be dropped before the sink
+    _stream: OutputStream,
+    _stream_handle: OutputStreamHandle,
+    sink: Sink,
+    pub current: Option<Player>,
+}
+
+#[derive(Clone, Debug, Default)]
+pub struct Player {
+    pub track: PlaylistElement,
+    pub is_paused: bool,
+    pub duration: Option<f32>,
+    pub position: Option<f32>,
+}
+
+impl Playback {
+    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,
+            current: None,
+        }
+    }
+
+    /// 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(&path).unwrap();
+            if let Ok(decoder) = Decoder::rodio(SourceWrapper::from_file(file)) {
+                source = Some(decoder);
+            };
+        }
+
+        if source.is_none() {
+            let file = File::open(&path).unwrap();
+            if let Ok(decoder) = Decoder::custom(SourceWrapper::from_file(file)) {
+                source = Some(decoder);
+            }
+        }
+
+        match source {
+            Some(source) => {
+                self.current = Some(Player {
+                    track: path,
+                    is_paused: false,
+                    duration: source.total_duration().map(|dur| dur.as_secs_f32()),
+                    position: None,
+                });
+                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) {
+        if let Some(current) = &self.current {
+            match current.is_paused {
+                true => self.sink.play(),
+                false => self.sink.pause(),
+            }
+        }
+    }
+}

src/protocol.rs

@@ -1,137 +0,0 @@
-use std::{
-    fmt::Display,
-    io::{Read, Write},
-};
-
-use serde::{Deserialize, Serialize};
-
-use crate::ServerState;
-
-/// Prefix messages with this header
-pub const HEADER_MAGIC: [u8; 4] = [0xCA, 0xFE, 0xBA, 0xBE];
-/// Maximum allowed body size
-pub const MAX_BODY_LENGTH: usize = 10 * 1024 * 1024;
-
-#[derive(Debug, Serialize, Deserialize)]
-pub enum MessageError {
-    HeaderMismatch,
-    BodySizeLimit,
-    ChecksumMismatch,
-    ReadError,
-    DeserializationError,
-}
-
-#[derive(Debug, PartialEq, Eq, Hash, Clone, Copy, Deserialize, Serialize)]
-pub enum MessageType {
-    /// Generic acknowledge
-    Ack = 0,
-    /// Recipient did not know how to handle the request.
-    NotImplementedAck,
-    /// Request was not a valid message. For example if the checksum did not match.
-    ProtocolError,
-    /// Request was a valid message, but it was incorrect. For example the body could be missing if
-    /// it was expected
-    ApplicationError,
-    StateFetch,
-    StateResponse,
-    SetShuffle,
-    SetNext,
-    SetRepeat,
-    SetPause,
-    PlayTrackFromPath,
-}
-
-#[derive(Debug, Serialize, Deserialize)]
-pub struct Message {
-    pub message_type: MessageType,
-    pub body: Option<Vec<u8>>,
-}
-
-impl Message {
-    // pub fn new(message_type: MessageType, body: Option<Vec<u8>>) -> Self {
-    //     Self { message_type, body }
-    // }
-
-    /// Message format (values are in little-endian):
-    /// offset | size | explanation
-    /// -------+------+-----------
-    /// 0x00   |  u32 | HEADER_MAGIC
-    /// 0x04   |  u32 | Body checksum
-    /// 0x08   |  u32 | Body length
-    /// 0x12   |    ? | Body
-    fn as_bytes(&self) -> Vec<u8> {
-        let magic = &HEADER_MAGIC[..];
-        let body = &bincode::serialize(self).unwrap();
-        let checksum = &crc32fast::hash(&body).to_le_bytes();
-        let body_length = &(body.len() as u32).to_le_bytes();
-        [magic, checksum, body_length, body].concat()
-    }
-
-    pub fn state_response(server_state: &ServerState) -> Result<Self, String> {
-        Ok(Self {
-            message_type: MessageType::StateResponse,
-            body: Some(bincode::serialize(server_state).map_err(|err| err.to_string())?),
-        })
-    }
-}
-
-impl Display for Message {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(
-            f,
-            "{:?}\t{}",
-            self.message_type,
-            self.body
-                .as_ref()
-                .map_or("(no body)".into(), |body| format!("{} B", body.len()))
-        )
-    }
-}
-
-pub fn send<T>(stream: &mut T, message: &Message) -> Result<(), std::io::Error>
-where
-    T: Write,
-{
-    stream.write_all(&message.as_bytes())?;
-    Ok(())
-}
-
-pub fn receive<T>(stream: &mut T) -> Result<Message, MessageError>
-where
-    T: Read,
-{
-    let mut magic_buffer = vec![0; HEADER_MAGIC.len()];
-    if let Err(_) = stream.read_exact(&mut magic_buffer) {
-        return Err(MessageError::ReadError);
-    }
-    if magic_buffer != HEADER_MAGIC {
-        return Err(MessageError::HeaderMismatch);
-    }
-
-    let mut checksum_buffer = [0; 4];
-    if let Err(_) = stream.read_exact(&mut checksum_buffer) {
-        return Err(MessageError::ReadError);
-    }
-    let expected_checksum = u32::from_le_bytes(checksum_buffer);
-
-    let mut body_length_buffer = [0; 4];
-    if let Err(_) = stream.read_exact(&mut body_length_buffer) {
-        return Err(MessageError::ReadError);
-    }
-    let expected_body_length = u32::from_le_bytes(body_length_buffer) as usize;
-
-    if expected_body_length > MAX_BODY_LENGTH {
-        return Err(MessageError::BodySizeLimit);
-    }
-
-    let mut body_buffer = vec![0; expected_body_length];
-    if let Err(_) = stream.read_exact(&mut body_buffer) {
-        return Err(MessageError::ReadError);
-    }
-
-    if crc32fast::hash(&body_buffer) != expected_checksum {
-        return Err(MessageError::ChecksumMismatch);
-    }
-
-    bincode::deserialize(&body_buffer).map_err(|_| MessageError::DeserializationError)
-}

src/server.rs

@@ -1,253 +0,0 @@
-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 crate::CliArgs;
-
-use self::playback::{playback_manager, Playback};
-
-pub mod decoder;
-pub mod playback;
-
-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> {
-    if let Err(err) = os::server::reserve_pid() {
-        let exit_code = handle_error(err);
-        std::process::exit(exit_code);
-    }
-
-    let server = Arc::new(Mutex::new(Server::from_state(ServerState {
-        playlist_params: PlaylistParams {
-            shuffle: args.shuffle,
-            next: args.next,
-            repeat: args.repeat,
-        },
-        player: None,
-    })));
-
-    let server_clone = server.clone();
-    std::thread::Builder::new()
-        .name("playback_manager".into())
-        .spawn(move || playback_manager(server_clone))
-        .unwrap();
-
-    serve(server)
-}
-
-pub fn kill() {
-    if let Err(err) = os::server::kill() {
-        let exit_code = handle_error(err);
-        std::process::exit(exit_code);
-    }
-}
-
-pub fn is_running() -> Result<bool, ServerError> {
-    match os::server::is_running() {
-        Ok(is_running) => Ok(is_running),
-        Err(err) => {
-            let exit_code = handle_error(err);
-            std::process::exit(exit_code);
-        }
-    }
-}
-
-pub fn run_in_background() {
-    if let Err(err) = os::server::run_in_background() {
-        let exit_code = handle_error(err);
-        std::process::exit(exit_code);
-    }
-}
-
-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) => {
-            eprintln!("Unknown error: {msg}");
-            1
-        }
-        ServerError::Io(err) => {
-            eprintln!("IO error: {err}");
-            2
-        }
-        ServerError::AlreadyRunning => {
-            eprintln!("Server already running");
-            100
-        }
-        ServerError::NotRunning => {
-            eprintln!("Server is not running");
-            101
-        }
-        ServerError::MissingRuntimeDir(path) => {
-            eprintln!("Missing runtime directory: {}", path.to_string_lossy());
-            200
-        }
-    }
-}
-
-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 +0,0 @@
-use std::{
-    borrow::BorrowMut,
-    fs::File,
-    path::PathBuf,
-    sync::{Arc, Mutex},
-};
-
-use rmp::PlayerState;
-use rodio::{OutputStream, Sink};
-
-use super::{
-    decoder::{Decoder, DecoderImpl, SourceWrapper},
-    Server,
-};
-
-// HACK: hard-coded path to track
-static TRACK: &str = "";
-
-enum PlaybackCommand {
-    PlayPath(PathBuf),
-    SetPause(bool),
-}
-
-pub struct Playback {
-    command_queue: Vec<PlaybackCommand>,
-}
-
-impl Default for Playback {
-    fn default() -> Self {
-        Self {
-            command_queue: vec![],
-        }
-    }
-}
-
-impl Playback {
-    pub fn play(&mut self, path: PathBuf) {
-        self.command_queue
-            .push(PlaybackCommand::PlayPath(TRACK.into())) // TODO: Remove hardcoding
-    }
-
-    pub fn pause(&mut self, new_state: bool) {
-        self.command_queue
-            .push(PlaybackCommand::SetPause(new_state))
-    }
-}
-
-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) => {
-                    let mut source: Option<Box<dyn DecoderImpl<Item = i16>>> = None;
-
-                    {
-                        let file = File::open(&track).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();
-                        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;
-                            }
-                        }
-                    }
-                }
-            }
-        }
-    }
-}

src/ui.rs

@@ -0,0 +1,162 @@
+use ratatui::{
+    prelude::*,
+    widgets::{block::Title, *},
+};
+use rmp::{PlaylistElement, StatefulList};
+
+use super::app::App;
+
+pub fn draw<B: Backend>(f: &mut Frame<B>, app: &mut App) {
+    let main_chunks = Layout::default()
+        .constraints([Constraint::Min(3), Constraint::Length(2)].as_ref())
+        .split(f.size());
+    draw_playlists(f, app, main_chunks[0]);
+    draw_player(f, app, main_chunks[1]);
+}
+
+static PRIMARY_COLOR: Color = Color::Rgb(200, 150, 70);
+static SECONDARY_COLOR: Color = Color::Rgb(200, 200, 200);
+
+static PRIMARY_CONTRAST: Color = Color::Black;
+static CLEAR_CONTRAST: Color = Color::Rgb(100, 100, 100);
+
+fn draw_playlists<B: Backend>(f: &mut Frame<B>, app: &App, area: Rect) {
+    let layout = Layout::default()
+        .direction(Direction::Horizontal)
+        .constraints([Constraint::Percentage(50), Constraint::Percentage(50)])
+        .split(area);
+    draw_playlist(
+        f,
+        app,
+        layout[0],
+        app.directory_playlist.directory.to_string_lossy().into(),
+        &app.directory_playlist.playlist,
+    );
+    draw_playlist(
+        f,
+        app,
+        layout[1],
+        "queue".into(),
+        &app.queue_playlist.playlist,
+    );
+}
+
+fn draw_playlist<B: Backend>(
+    f: &mut Frame<B>,
+    app: &App,
+    area: Rect,
+    title: String,
+    playlist: &StatefulList<PlaylistElement>,
+) {
+    let tracks: Vec<_> = playlist
+        .items
+        .iter()
+        .enumerate()
+        .map(|(index, path)| {
+            let selected = playlist
+                .state
+                .selected()
+                .map_or(false, |selected| index == selected);
+            let playing = app
+                .playback
+                .current
+                .clone()
+                .map_or(false, |current| current.track == *path);
+            let mut style = Style::default();
+            match (selected, playing) {
+                (true, false) => {
+                    style.fg = Some(Color::Black);
+                    style.bg = Some(PRIMARY_COLOR);
+                }
+                (false, true) => style.fg = Some(PRIMARY_COLOR),
+                (true, true) => {
+                    style.fg = None;
+                    style.bg = Some(PRIMARY_COLOR);
+                }
+                (_, _) => (),
+            }
+            let content = Span::from(render_track_name(path));
+            ListItem::new(content).set_style(style)
+        })
+        .collect();
+    let playlist = List::new(tracks)
+        .block(
+            Block::default()
+                .title(title)
+                .borders(Borders::ALL)
+                .border_style(Style::default().fg(SECONDARY_COLOR)),
+        )
+        .start_corner(Corner::TopLeft);
+    f.render_widget(playlist, area);
+}
+
+fn draw_player<B: Backend>(f: &mut Frame<B>, app: &App, area: Rect) {
+    fn decorate_bool(span: Span, value: bool) -> Span {
+        match value {
+            true => span.bg(PRIMARY_COLOR).fg(PRIMARY_CONTRAST),
+            false => span.fg(CLEAR_CONTRAST),
+        }
+    }
+
+    let track_title = vec![
+        Span::from("[ "),
+        Span::from("??").fg(PRIMARY_COLOR),
+        Span::from(" ]"),
+    ];
+
+    let mut block = Block::default()
+        .borders(Borders::TOP)
+        .border_style(Style::default().fg(SECONDARY_COLOR))
+        .title(track_title);
+
+    // Horrible to look at, worse to write
+    let param_titles: Vec<Title> = vec![
+        (
+            app.track_change_options.next,
+            vec![
+                Span::from("NE"),
+                Span::from("X").underlined(),
+                Span::from("T"),
+            ],
+        ),
+        (
+            app.track_change_options.shuffle,
+            vec![Span::from("S").underlined(), Span::from("HUFFLE")],
+        ),
+        (
+            app.track_change_options.repeat,
+            vec![Span::from("R").underlined(), Span::from("EPEAT")],
+        ),
+    ]
+    .iter()
+    .map(|(value, spans)| {
+        spans
+            .iter()
+            .map(|span| decorate_bool(span.clone(), *value))
+            .collect::<Vec<_>>()
+    })
+    .map(|spans| Title::from([&[Span::from(" ")], spans.as_slice(), &[Span::from(" ")]].concat()))
+    .collect();
+
+    for title in param_titles {
+        block = block.title(title);
+    }
+
+    let block = block.title_position(block::Position::Top);
+
+    let player = Gauge::default()
+        .block(block)
+        .gauge_style(Style::default().fg(PRIMARY_COLOR))
+        .ratio(0.25)
+        .label("[ PAUSED ]");
+
+    f.render_widget(player, area)
+}
+
+fn render_track_name(track: &PlaylistElement) -> String {
+    track
+        .file_name()
+        .map_or("<unspeakable file name>".into(), |os_str| {
+            os_str.to_string_lossy().to_string()
+        })
+}