init

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.toml

@@ -0,0 +1,30 @@
+[package]
+name = "ncmprs"
+version = "0.1.0"
+description = "An example generated using the event-driven-async template"
+authors = ["nicknase27 <80787938+nicknase27@users.noreply.github.com>"]
+license = "MIT"
+edition = "2024"
+
+[dependencies]
+crossterm = { version = "0.29.0", features = ["event-stream"] }
+futures = "0.3.32"
+ratatui = "0.30.2"
+tokio = { version = "1.52.3", features = ["full"] }
+color-eyre = "0.6.5"
+dirs = "6.0.0"
+rodio = "0.22.2"
+walkdir = "2.5.0"
+metaflac = "0.2.8"
+audiotags = "0.5.0"
+serde = { version = "1.0.228", features = ["derive"] }
+serde_json = "1.0.150"
+discord-rich-presence = "1.1.0"
+config = "0.15.25"
+
+# Read the optimization guideline for more details: https://ratatui.rs/recipes/apps/release-your-app/#optimizations
+[profile.release]
+codegen-units = 1
+lto = true
+opt-level = "s"
+strip = true

src/app.rs

@@ -0,0 +1,412 @@
+use std::fs::{File};
+use std::io::BufReader;
+use std::collections::{VecDeque};
+
+use crate::event::{AppEvent, Event, EventHandler};
+use crate::library::{Library, Song};
+
+use crossterm::event::MediaKeyCode::{self, PlayPause};
+use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
+use discord_rich_presence::activity::{Assets, Timestamps};
+use ratatui::DefaultTerminal;
+use ratatui::widgets::{List, ListItem, ListState};
+use rodio::{Decoder};
+use audiotags::{MimeType, Tag};
+use discord_rich_presence::{activity, DiscordIpc, DiscordIpcClient};
+use std::time::{Duration, SystemTime, UNIX_EPOCH};
+
+#[derive(Debug, Default, PartialEq, Eq)]
+pub enum Focus {
+    #[default]
+    Artists,
+    Albums,
+    Songs,
+    Queue,
+}
+
+/// Application.
+//#[derive(Debug)]
+pub struct App {
+    /// Is the application running?
+    pub running: bool,
+
+    pub library: Library,
+
+    pub queue: VecDeque<usize>,
+
+    pub sink_handle: rodio::MixerDeviceSink,
+    pub player: rodio::Player,
+
+    pub artist_state: ListState,
+    pub album_state: ListState,
+    pub song_state: ListState,
+    pub queue_state: ListState,
+    pub focus: Focus,
+
+    pub current_song: Option<usize>,
+
+    pub discord_client: Option<DiscordIpcClient>,
+
+    /// Event handler.
+    pub events: EventHandler,
+}
+
+impl App {
+    /// Constructs a new instance of [`App`].
+    pub fn new() -> Self {
+        let sink_handle = rodio::DeviceSinkBuilder::open_default_sink()
+            .expect("open default audio stream");
+        let player = rodio::Player::connect_new(sink_handle.mixer());
+        player.set_volume(1.0);
+
+        let discord_client = {
+        let mut client = DiscordIpcClient::new("1525954755292299426");
+
+    match client.connect() {
+        Ok(_) => Some(client),
+        Err(e) => {
+            eprintln!("Discord RPC unavailable: {e}");
+            None
+        }
+    }
+};
+
+
+        Self {
+            running: true,
+            library: Library::new(),
+            //songs: get_songs(),
+            queue: vec![].into(),
+            artist_state: ListState::default().with_selected(Some(0)),
+            album_state: ListState::default().with_selected(Some(0)),
+            song_state: ListState::default().with_selected(Some(0)),
+            queue_state: ListState::default().with_selected(Some(0)),
+            focus: Focus::default(),
+            events: EventHandler::new(),
+            current_song: None,
+            sink_handle,
+            player,
+            discord_client,
+        }
+
+    }
+
+    /// Run the application's main loop.
+    pub async fn run(mut self, mut terminal: DefaultTerminal) -> color_eyre::Result<()> {
+        while self.running {
+            terminal.draw(|frame| frame.render_widget(&mut self, frame.area()))?;
+            match self.events.next().await? {
+                Event::Tick => self.tick(),
+                Event::Crossterm(event) => match event {
+                    crossterm::event::Event::Key(key_event)
+                        if key_event.kind == crossterm::event::KeyEventKind::Press =>
+                    {
+                        self.handle_key_events(key_event)?
+                    }
+                    _ => {}
+                },
+                Event::App(app_event) => match app_event {
+                    AppEvent::Play => match self.focus {
+                        Focus::Artists => (),
+                        Focus::Albums => self.enqueue_album(),
+                        Focus::Songs => self.play_song(self.song_state.selected().expect("None")),
+                        _ => (),
+                    },
+                    AppEvent::Skip => self.skip(),
+                    AppEvent::PlayPause => self.play_pause(),
+                    AppEvent::IncVolume => self.inc_volume(),
+                    AppEvent::DecVolume => self.dec_volume(),
+                    AppEvent::MoveRight => self.move_right(),
+                    AppEvent::MoveLeft => self.move_left(),
+                    AppEvent::RemoveFromQueue => self.remove_from_queue(),
+                    
+                    
+                    
+                    AppEvent::Quit => self.quit(),
+                },
+            }
+        }
+        drop(self.discord_client);
+        Ok(())
+    }
+
+    /// Handles the key events and updates the state of [`App`].
+    pub fn handle_key_events(&mut self, key_event: KeyEvent) -> color_eyre::Result<()> {
+        match key_event.code {
+            KeyCode::Esc | KeyCode::Char('q') => self.events.send(AppEvent::Quit),
+            KeyCode::Char('c' | 'C') if key_event.modifiers == KeyModifiers::CONTROL => {
+                self.events.send(AppEvent::Quit)
+            },
+
+            KeyCode::Char('R') => {
+                self.library = Library::scan();
+                self.library.save();
+            },
+
+            KeyCode::Char('l') | KeyCode::Right  | KeyCode::Tab => self.events.send(AppEvent::MoveRight),
+            KeyCode::Char('h') | KeyCode::Left => self.events.send(AppEvent::MoveLeft),
+
+            KeyCode::Char('j') | KeyCode::Down => match self.focus {
+                Focus::Artists => self.artist_state.select_next(),
+                Focus::Albums => self.album_state.select_next(),
+                Focus::Songs => self.song_state.select_next(),
+                Focus::Queue => self.queue_state.select_next(),
+            },
+            KeyCode::Char('k') | KeyCode::Up => match self.focus {
+                Focus::Artists => self.artist_state.select_previous(),
+                Focus::Albums => self.album_state.select_previous(),
+                Focus::Songs => self.song_state.select_previous(),
+                Focus::Queue => self.queue_state.select_previous(),
+            },
+
+            KeyCode::Char('g') => match self.focus {
+                Focus::Artists => self.artist_state.select_first(),
+                Focus::Albums => self.album_state.select_first(),
+                Focus::Songs => self.song_state.select_first(),
+                Focus::Queue => self.queue_state.select_first(),
+            },
+            KeyCode::Char('G') => match self.focus {
+                Focus::Artists => self.artist_state.select_last(),
+                Focus::Albums => self.album_state.select_last(),
+                Focus::Songs => self.song_state.select_last(),
+                Focus::Queue => self.queue_state.select_last(),
+            },
+
+            KeyCode::Enter => self.events.send(AppEvent::Play),
+            KeyCode::Char('x') => self.stop_playback(),
+            KeyCode::Char(' ') | KeyCode::Media(MediaKeyCode::PlayPause) => self.events.send(AppEvent::PlayPause),
+            KeyCode::Char('+') | KeyCode::Char('=') => self.events.send(AppEvent::IncVolume),
+            KeyCode::Char('-') | KeyCode::Char('_') => self.events.send(AppEvent::DecVolume),
+            KeyCode::Delete => self.events.send(AppEvent::RemoveFromQueue),
+            KeyCode::Char('>') => self.events.send(AppEvent::Skip),
+            // Other handlers you could add here.
+            _ => {}
+        }
+        Ok(())
+    }
+
+    /* 
+    pub fn play(&mut self) {
+            let file = File::open(self.songs[self.list_state.selected().expect("None")].clone()).unwrap();
+            let source = Decoder::new(BufReader::new(file)).unwrap();
+
+            if self.player.empty() {
+                self.player.append(source);
+            } else {
+                self.player.stop();
+                self.player.append(source);
+            }
+            
+    }
+    */
+    pub fn play(&mut self) {
+        if !self.queue.is_empty() {
+            for _i in 0..self.queue.len() {
+                let file = File::open(self.library.songs[*self.queue.front().expect("None")].path.clone()).unwrap();
+                let source = Decoder::new(BufReader::new(file)).unwrap();
+                self.queue.pop_front();
+                self.player.append(source);
+            }
+            
+        } else {
+            let file = File::open(self.library.songs[self.artist_state.selected().expect("None")].path.clone()).unwrap();
+            let source = Decoder::new(BufReader::new(file)).unwrap();
+            if self.player.empty() {
+                self.player.append(source);
+            } else {
+                self.player.stop();
+                self.player.append(source);
+            }
+        }
+    }
+
+    pub fn play_song(&mut self, index: usize) {
+        let song_indexes = self.current_selected_song();
+        let song_index = song_indexes[index];
+
+        self.queue.push_back(song_index);
+
+    }
+
+    pub fn enqueue_album(&mut self) {
+    let song_indexes = self.current_selected_song();
+
+    for &song in &song_indexes {
+        self.queue.push_back(song);
+    }
+
+    let song = &self.library.songs[song_indexes[0]];
+
+    // We only need to read the tags if we might have to save the artwork.
+    let tag = Tag::default()
+        .read_from_path(&song.path)
+        .expect("Error");
+
+    if let Some(cover) = tag.album_cover() {
+        let extension = match cover.mime_type {
+            MimeType::Png => "png",
+            MimeType::Jpeg => "jpg",
+            _ => "bin",
+        };
+
+        let filename = format!("{} - {}.{}", song.artist, song.album, extension);
+
+        let path = dirs::cache_dir()
+            .unwrap()
+            .join("ncmprs")
+            .join("art")
+            .join(filename);
+
+        if !path.exists() {
+            std::fs::create_dir_all(path.parent().unwrap()).unwrap();
+            std::fs::write(&path, cover.data).unwrap();
+        }
+    }
+}
+
+    pub fn current_selected_song(&mut self) -> Vec<usize> {
+        let selected_artist = &self.library.artists[self.artist_state.selected().unwrap()];
+        let albums = self.library.albums_for_artist(selected_artist);
+        let selected_album = &albums[self.album_state.selected().unwrap()];
+        let song_indexes = self.library.songs_for_album(selected_artist, selected_album);
+        song_indexes.to_owned()
+
+    }
+
+    pub fn play_pause(&mut self) {
+        if !self.player.is_paused() {
+            self.player.pause();
+        } else if self.player.is_paused() {
+            self.player.play();
+        }
+    }
+
+    pub fn inc_volume(&mut self) {
+        let vol = self.player.volume();
+        //self.player.set_volume(self.player.volume() + 0.1);
+        if vol >= 1.0 {
+            self.player.set_volume(1.0);
+        } else {
+            self.player.set_volume(vol + 0.05);
+        }
+    }
+
+    pub fn dec_volume(&mut self) {
+        let vol = self.player.volume();
+        if vol <= 0.01 {
+            self.player.set_volume(0.0);
+        } else {
+            self.player.set_volume(vol - 0.05);
+        }
+    }
+
+
+    pub fn skip(&mut self) {
+        self.player.skip_one();
+        if self.queue.is_empty() {
+
+            self.current_song = None;
+
+            if let Some(client) = self.discord_client.as_mut() {
+                let _ = client.clear_activity();
+            }
+        }
+    }
+
+    pub fn remove_from_queue(&mut self) {
+        if self.queue_state.selected().is_some() {
+            self.queue.remove(self.queue_state.selected().unwrap());
+        } 
+        
+    }
+
+    pub fn stop_playback(&mut self) {
+        self.queue.clear();
+        self.player.stop();
+        if let Some(client) = self.discord_client.as_mut() {
+                let _ = client.clear_activity();
+        }
+        self.current_song = None;
+    }
+
+
+    pub fn move_right(&mut self) {
+        match self.focus {
+            Focus::Artists => self.focus = Focus::Albums,
+            Focus::Albums => self.focus = Focus::Songs,
+            Focus::Songs => self.focus = Focus::Queue,
+            Focus::Queue => self.focus = Focus::Artists,
+        }
+
+    }
+
+    pub fn move_left(&mut self) {
+        match self.focus {
+            Focus::Artists => self.focus = Focus::Queue,
+            Focus::Albums => self.focus = Focus::Artists,
+            Focus::Songs => self.focus = Focus::Albums,
+            Focus::Queue => self.focus = Focus::Songs,
+        }
+    }
+
+    pub fn current_song(&self) -> Option<&Song> {
+        self.current_song.map(|i| &self.library.songs[i])
+    }
+
+    pub fn current_song_title(&self) -> &str {
+        self.current_song()
+            .map(|s| s.title.as_str())
+            .unwrap_or("")
+    }
+
+    pub fn update_rpc(&mut self, index: usize) {
+    if let Some(client) = self.discord_client.as_mut() {
+        let now = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .unwrap()
+            .as_secs() as i64;
+
+        let song = &self.library.songs[index];
+        let duration = song.duration.unwrap_or(1.0) as i64;
+        let artist = &song.artist;
+
+        let timestamps = Timestamps::new()
+            .start(now)
+            .end(now + duration);
+        let asset = Assets::new();
+
+
+        let payload = activity::Activity::new()
+            .name(song.title.clone())
+            .state(artist)
+            .activity_type(activity::ActivityType::Listening)
+            .timestamps(timestamps)
+            .assets(asset.large_image("https://cdn.jsdelivr.net/gh/homarr-labs/dashboard-icons/png/navidrome.png"));
+
+        let _ = client.set_activity(payload);
+    }
+        
+        
+    }
+
+    /// Handles the tick event of the terminal.
+    ///
+    /// The tick event is where you can update the state of your application with any logic that
+    /// needs to be updated at a fixed frame rate. E.g. polling a server, updating an animation.
+    pub fn tick(&mut self) {
+        if self.player.empty() && !self.queue.is_empty() {
+            let file = File::open(&self.library.songs[*self.queue.front().expect("Queue is empty")].path).unwrap();
+            let source = Decoder::new(BufReader::new(file)).unwrap();
+            self.player.append(source);
+            self.current_song = Some(self.queue.front().unwrap().to_owned());
+            
+            self.update_rpc(self.queue.front().unwrap().to_owned());
+            self.queue.pop_front();
+        }
+    }
+
+    /// Set running to false to quit the application.
+    pub fn quit(&mut self) {
+        self.running = false;
+    }
+}

src/event.rs

@@ -0,0 +1,133 @@
+use color_eyre::eyre::OptionExt;
+use crossterm::event::Event as CrosstermEvent;
+use futures::{FutureExt, StreamExt};
+use std::time::Duration;
+use tokio::sync::mpsc;
+
+/// The frequency at which tick events are emitted.
+const TICK_FPS: f64 = 30.0;
+
+/// Representation of all possible events.
+#[derive(Clone, Debug)]
+pub enum Event {
+    /// An event that is emitted on a regular schedule.
+    ///
+    /// Use this event to run any code which has to run outside of being a direct response to a user
+    /// event. e.g. polling exernal systems, updating animations, or rendering the UI based on a
+    /// fixed frame rate.
+    Tick,
+    /// Crossterm events.
+    ///
+    /// These events are emitted by the terminal.
+    Crossterm(CrosstermEvent),
+    /// Application events.
+    ///
+    /// Use this event to emit custom events that are specific to your application.
+    App(AppEvent),
+}
+
+/// Application events.
+///
+/// You can extend this enum with your own custom events.
+#[derive(Clone, Debug)]
+pub enum AppEvent {
+    Play,
+    PlayPause,
+    Skip,
+    IncVolume,
+    DecVolume,
+    MoveRight,
+    MoveLeft,
+    RemoveFromQueue,
+    Quit,
+}
+
+/// Terminal event handler.
+#[derive(Debug)]
+pub struct EventHandler {
+    /// Event sender channel.
+    sender: mpsc::UnboundedSender<Event>,
+    /// Event receiver channel.
+    receiver: mpsc::UnboundedReceiver<Event>,
+}
+
+impl EventHandler {
+    /// Constructs a new instance of [`EventHandler`] and spawns a new thread to handle events.
+    pub fn new() -> Self {
+        let (sender, receiver) = mpsc::unbounded_channel();
+        let actor = EventTask::new(sender.clone());
+        tokio::spawn(async { actor.run().await });
+        Self { sender, receiver }
+    }
+
+    /// Receives an event from the sender.
+    ///
+    /// This function blocks until an event is received.
+    ///
+    /// # Errors
+    ///
+    /// This function returns an error if the sender channel is disconnected. This can happen if an
+    /// error occurs in the event thread. In practice, this should not happen unless there is a
+    /// problem with the underlying terminal.
+    pub async fn next(&mut self) -> color_eyre::Result<Event> {
+        self.receiver
+            .recv()
+            .await
+            .ok_or_eyre("Failed to receive event")
+    }
+
+    /// Queue an app event to be sent to the event receiver.
+    ///
+    /// This is useful for sending events to the event handler which will be processed by the next
+    /// iteration of the application's event loop.
+    pub fn send(&mut self, app_event: AppEvent) {
+        // Ignore the result as the reciever cannot be dropped while this struct still has a
+        // reference to it
+        let _ = self.sender.send(Event::App(app_event));
+    }
+}
+
+/// A thread that handles reading crossterm events and emitting tick events on a regular schedule.
+struct EventTask {
+    /// Event sender channel.
+    sender: mpsc::UnboundedSender<Event>,
+}
+
+impl EventTask {
+    /// Constructs a new instance of [`EventThread`].
+    fn new(sender: mpsc::UnboundedSender<Event>) -> Self {
+        Self { sender }
+    }
+
+    /// Runs the event thread.
+    ///
+    /// This function emits tick events at a fixed rate and polls for crossterm events in between.
+    async fn run(self) -> color_eyre::Result<()> {
+        let tick_rate = Duration::from_secs_f64(1.0 / TICK_FPS);
+        let mut reader = crossterm::event::EventStream::new();
+        let mut tick = tokio::time::interval(tick_rate);
+        loop {
+            let tick_delay = tick.tick();
+            let crossterm_event = reader.next().fuse();
+            tokio::select! {
+              _ = self.sender.closed() => {
+                break;
+              }
+              _ = tick_delay => {
+                self.send(Event::Tick);
+              }
+              Some(Ok(evt)) = crossterm_event => {
+                self.send(Event::Crossterm(evt));
+              }
+            };
+        }
+        Ok(())
+    }
+
+    /// Sends an event to the receiver.
+    fn send(&self, event: Event) {
+        // Ignores the result because shutting down the app drops the receiver, which causes the send
+        // operation to fail. This is expected behavior and should not panic.
+        let _ = self.sender.send(event);
+    }
+}

src/library.rs

@@ -0,0 +1,201 @@
+use std::collections::{BTreeSet, HashMap};
+use std::path::{Path, PathBuf};
+
+use audiotags::Tag;
+use serde::{Deserialize, Serialize};
+use walkdir::WalkDir;
+use config::{Config, File};
+
+#[derive(Debug, Deserialize)]
+pub struct Settings {
+    pub library_path: PathBuf,
+}
+
+#[derive(Clone, Serialize, Deserialize)]
+pub struct Song {
+    pub title: String,
+    pub artist: String,
+    pub album: String,
+    pub duration: Option<f64>,
+    pub path: PathBuf,
+}
+
+#[derive(Clone, Serialize, Deserialize)]
+pub struct Library {
+    pub songs: Vec<Song>,
+    #[serde(skip)]
+    pub artists: Vec<String>,
+    #[serde(skip)]
+    pub artist_albums: HashMap<String, BTreeSet<String>>,
+    #[serde(skip)]
+    pub album_songs: HashMap<(String, String), Vec<usize>>,
+}
+
+impl Library {
+    pub fn new() -> Self {
+    let lib_path = Self::library_path();
+
+    if lib_path.exists() {
+        Self::load()
+    } else {
+        let library = Self::scan();
+        library.save();
+        library
+    }
+}
+
+    pub fn scan() -> Self {
+        let settings = Self::config();
+        let temp_songs = get_songs(&settings.library_path);
+        let mut songs: Vec<Song> = vec![];
+
+        for (index, song) in temp_songs.into_iter().enumerate() {
+            let tag = Tag::default().read_from_path(&song).expect("Error");
+            let song = Song {
+                title: tag.title().unwrap_or("Could not read title").to_string(),
+                artist: tag.artist().unwrap_or("Could not read artist").to_string(),
+                album: tag.album().unwrap().title.to_string(),
+                duration: if tag.duration().is_some() {
+                    tag.duration()
+                } else {
+                    Some(0.1)
+                },
+                path: song,
+            };
+
+            songs.push(song);
+        }
+
+        let mut library = Self {
+            songs,
+            artists: Vec::new(),
+            artist_albums: HashMap::new(),
+            album_songs: HashMap::new(),
+        };
+
+        library.rebuild_indexes();
+
+        library
+    }
+
+    pub fn load() -> Self {
+        let lib_path = Self::library_path();
+        let json = std::fs::read_to_string(lib_path).unwrap();
+        let mut library: Library = serde_json::from_str(&json).unwrap();
+
+        library.rebuild_indexes();
+
+        library
+    }
+
+    pub fn albums_for_artist(&self, artist: &String) -> Vec<String> {
+        self.artist_albums
+            .get(artist)
+            .unwrap()
+            .iter()
+            .cloned()
+            .collect()
+    }
+
+    pub fn songs_for_album(&self, artist: &String, album: &String) -> &Vec<usize> {
+        self.album_songs
+            .get(&(artist.clone(), album.clone()))
+            .unwrap()
+    }
+
+    pub fn save(&self) {
+        let lib_path = Self::library_path();
+        std::fs::create_dir_all(lib_path.parent().unwrap()).unwrap();
+
+        let json = serde_json::to_string(self).unwrap();
+        std::fs::write(lib_path, json).unwrap();
+    }
+
+    fn rebuild_indexes(&mut self) {
+        self.artists.clear();
+        self.artist_albums.clear();
+        self.album_songs.clear();
+
+        let mut artists = BTreeSet::new();
+
+        for (index, song) in self.songs.iter().enumerate() {
+            artists.insert(song.artist.clone());
+
+            self.artist_albums
+                .entry(song.artist.clone())
+                .or_default()
+                .insert(song.album.clone());
+
+            self.album_songs
+                .entry((song.artist.clone(), song.album.clone()))
+                .or_default()
+                .push(index);
+        }
+
+        self.artists = artists.into_iter().collect();
+    }
+
+    fn library_path() -> PathBuf {
+        dirs::cache_dir()
+            .expect("Cache directory does not exist")
+            .join("ncmprs")
+            .join("library.json")
+    }
+
+    fn config() -> Settings {
+        load_config().expect("Failed to load config.toml")
+    }
+}
+
+/* 
+fn get_songs() -> Vec<PathBuf> {
+    let mut songs: Vec<PathBuf> = vec![];
+
+    
+    let flacs = WalkDir::new("/mnt/media/music")
+        .into_iter()
+        .filter_map(Result::ok)
+        .filter(|e| {
+            e.file_type().is_file() && e.path().extension().is_some_and(|ext| ext == "flac")
+        })
+        .map(|e| e.into_path());
+
+    for path in flacs {
+        // `path` is a PathBuf
+        //println!("{}", path.display());
+        songs.push(path);
+    }
+    songs.sort();
+    songs
+}
+*/
+
+fn get_songs(library: &Path) -> Vec<PathBuf> {
+    let mut songs: Vec<PathBuf> = WalkDir::new(library)
+        .into_iter()
+        .filter_map(Result::ok)
+        .filter(|e| {
+            e.file_type().is_file()
+                && e.path()
+                    .extension()
+                    .is_some_and(|ext| ext == "flac")
+        })
+        .map(|e| e.into_path())
+        .collect();
+
+    songs.sort();
+    songs
+}
+
+pub fn load_config() -> Result<Settings, config::ConfigError> {
+    let config_path = dirs::config_dir()
+        .expect("Couldn't determine config directory")
+        .join("ncmprs")
+        .join("config.toml");
+
+    Config::builder()
+        .add_source(File::from(config_path))
+        .build()?
+        .try_deserialize()
+}
+

src/main.rs

@@ -0,0 +1,15 @@
+use crate::app::App;
+
+pub mod app;
+pub mod event;
+pub mod ui;
+pub mod library;
+
+#[tokio::main]
+async fn main() -> color_eyre::Result<()> {
+    color_eyre::install()?;
+    let terminal = ratatui::init();
+    let result = App::new().run(terminal).await;
+    ratatui::restore();
+    result
+}

src/ui.rs

@@ -0,0 +1,224 @@
+use ratatui::{
+    buffer::Buffer, layout::{
+        Alignment, Constraint,
+        Direction::{self},
+        Layout, Rect,
+    }, style::{Color, Modifier, Style}, symbols, widgets::{
+        Block, BorderType::{self, Rounded}, LineGauge, List, ListDirection, ListItem, Paragraph, StatefulWidget, Widget,
+    },
+};
+
+use crate::app::App;
+use crate::app::Focus;
+
+impl Widget for &mut App {
+    fn render(self, area: Rect, buf: &mut Buffer) {
+        let position = self.player.get_pos().as_secs_f64();
+
+        let outer_layout = Layout::default()
+            .direction(Direction::Horizontal)
+            .constraints([
+                Constraint::Percentage(25),
+                Constraint::Percentage(50),
+                Constraint::Percentage(25),
+            ])
+            .split(area);
+
+        let left_area = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints([Constraint::Fill(100)])
+            .split(outer_layout[0]);
+
+        let right_area = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints([Constraint::Percentage(60), Constraint::Percentage(40)])
+            .split(outer_layout[2]);
+
+        let center_area = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints([
+                Constraint::Min(8), // Album list
+                Constraint::Length(6),
+            ])
+            .split(outer_layout[1]);
+
+        let now_playing_block = Block::bordered().title(format!("Now Playing | Vol: {:.0}", self.player.volume() * 100.0)).border_type(Rounded);
+        let inner = now_playing_block.inner(center_area[1]);
+        Widget::render(now_playing_block, center_area[1], buf);
+
+        let player_area = Layout::vertical([
+            Constraint::Fill(1),
+            Constraint::Length(4),
+            Constraint::Fill(1),
+        ])
+        .split(inner);
+
+        let now_playing = Layout::vertical([
+            Constraint::Length(1),
+            Constraint::Length(1),
+            Constraint::Length(1),
+        ])
+        .split(player_area[1]);
+
+        let progress = Layout::horizontal([
+            Constraint::Length(3),  // ▶
+            Constraint::Length(2),  // %
+            Constraint::Fill(1),    // bar
+            Constraint::Length(15), // time
+        ])
+        .split(now_playing[2]);
+        // Dynamic coloring based on pane focus status
+        let artist_border_color = if self.focus == Focus::Artists {
+            Color::Green
+        } else {
+            Color::Gray
+        };
+        let album_border_color = if self.focus == Focus::Albums {
+            Color::Green
+        } else {
+            Color::Gray
+        };
+        let song_border_color = if self.focus == Focus::Songs {
+            Color::Green
+        } else {
+            Color::Gray
+        };
+        let queue_border_color = if self.focus == Focus::Queue {
+            Color::Green
+        } else {
+            Color::Gray
+        };
+
+        let artists: Vec<ListItem> = self
+            .library
+            .artists
+            .iter()
+            .map(|artist| ListItem::new(artist.to_string()))
+            .collect();
+
+        let artist_list = List::new(artists)
+            .block(
+                Block::bordered()
+                    .title("Artists")
+                    .border_style(Style::new().fg(artist_border_color)).border_type(Rounded),
+            )
+            .style(Style::new().white())
+            .highlight_symbol(">>")
+            .repeat_highlight_symbol(true)
+            .highlight_style(Style::new().reversed())
+            .direction(ListDirection::TopToBottom);
+
+        StatefulWidget::render(artist_list, left_area[0], buf, &mut self.artist_state);
+
+        let albums: Vec<ListItem> = self
+            .library
+            .albums_for_artist(
+                &self.library.artists[self.artist_state.selected().expect("None")].clone(),
+            )
+            .iter()
+            .map(|albums| ListItem::new(albums.to_string()))
+            .collect();
+
+        let album_list = List::new(albums)
+            .block(
+                Block::bordered()
+                    .title("Albums")
+                    .border_style(Style::new().fg(album_border_color)).border_type(Rounded),
+            )
+            .style(Style::new().white())
+            .highlight_symbol(">>")
+            .repeat_highlight_symbol(true)
+            .highlight_style(Style::new().reversed())
+            .direction(ListDirection::TopToBottom);
+
+        StatefulWidget::render(album_list, center_area[0], buf, &mut self.album_state);
+
+        let song_indexes: Vec<usize> = self.current_selected_song();
+
+        let song_items: Vec<ListItem> = song_indexes
+            .iter()
+            .map(|&index| ListItem::new(self.library.songs[index].title.clone()))
+            .collect();
+
+        let song_list = List::new(song_items)
+            .block(
+                Block::bordered()
+                    .title("Songs")
+                    .border_style(Style::new().fg(song_border_color)).border_type(Rounded),
+            )
+            .style(Style::new().white())
+            .highlight_symbol(">>")
+            .repeat_highlight_symbol(true)
+            .highlight_style(Style::new().reversed())
+            .direction(ListDirection::TopToBottom);
+
+        StatefulWidget::render(song_list, right_area[0], buf, &mut self.song_state);
+
+        let queue_items: Vec<ListItem> = self
+            .queue
+            .iter()
+            .map(|&index| ListItem::new(self.library.songs[index].title.as_str()))
+            .collect();
+
+        let queue_list = List::new(queue_items)
+            .block(Block::bordered().title("Queue").border_style(Style::new().fg(queue_border_color)).border_type(Rounded))
+            .style(Style::new().white())
+            .highlight_symbol(">>")
+            .repeat_highlight_symbol(true)
+            .highlight_style(Style::new())
+            .direction(ListDirection::TopToBottom);
+
+        StatefulWidget::render(queue_list, right_area[1], buf, &mut self.queue_state);
+
+        if let Some(song) = self.current_song() {
+            let duration = song.duration.unwrap_or(1.0);
+            Paragraph::new(song.title.as_str())
+                .alignment(Alignment::Center)
+                .render(now_playing[0], buf);
+
+            Paragraph::new(format!("› {}", song.artist))
+                .alignment(Alignment::Center)
+                .style(Style::new().fg(Color::DarkGray))
+                .render(now_playing[1], buf);
+
+            let percent = position / duration;
+
+            let line_gauge = LineGauge::default()
+                .filled_style(Style::new().green().add_modifier(Modifier::BOLD))
+                .unfilled_style(
+                    Style::new()
+                        .gray()
+                        .add_modifier(Modifier::BOLD | Modifier::DIM),
+                )
+                .label(format!("{:>3.0}%", percent * 100.0))
+                .ratio(percent.clamp(0.0, 1.0))
+                .filled_symbol(symbols::line::HORIZONTAL)
+                .unfilled_symbol(symbols::line::HORIZONTAL);
+
+            Widget::render(line_gauge, progress[2], buf);
+
+            Paragraph::new(format!(
+                " {} / {}",
+                format_time(position),
+                format_time(duration),
+            ))
+            .render(progress[3], buf);
+        } else {
+            Paragraph::new("Nothing is playing").render(now_playing[0], buf);
+
+            let line_gauge = LineGauge::default()
+                .ratio(0.0)
+                .filled_symbol(symbols::line::HORIZONTAL)
+                .unfilled_symbol(symbols::line::HORIZONTAL);
+
+            Widget::render(line_gauge, progress[2], buf);
+        }
+
+        Paragraph::new(if self.player.is_paused() { "||" } else { ">" }).render(progress[0], buf);
+    }
+}
+
+fn format_time(seconds: f64) -> String {
+    let secs = seconds as u64;
+    format!("{}:{:02}", secs / 60, secs % 60)
+}