feat: show last played songs in web ui

pkg/discord/jukebox.go

@@ -26,13 +26,18 @@ type JukeboxPlayer struct {
 	playlistMutex       sync.Mutex
 	playingMutex        sync.Mutex
 	currentStreamCancel context.CancelFunc
+	songHistory         []*subsonic.Song
+	historyMutex        sync.RWMutex
+	maxHistorySize      int
 }
 
 // NewJukeboxPlayer creates a new jukebox player
 func NewJukeboxPlayer(bot *Bot) *JukeboxPlayer {
 	jukebox := &JukeboxPlayer{
-		bot:      bot,
-		playlist: make([]subsonic.Song, 0),
+		bot:            bot,
+		playlist:       make([]subsonic.Song, 0),
+		songHistory:    make([]*subsonic.Song, 0),
+		maxHistorySize: 20, // Store the last 20 songs
 	}
 
 	// Register command handlers
@@ -232,7 +237,7 @@ func (j *JukeboxPlayer) startPlaying() {
 			j.playingMutex.Lock()
 			j.currentSong = nil
 			j.playingMutex.Unlock()
-			
+	
 			return
 		}
 
@@ -269,6 +274,9 @@ func (j *JukeboxPlayer) startPlaying() {
 		j.playingMutex.Lock()
 		j.currentSong = song
 		j.playingMutex.Unlock()
+		
+		// Add song to history when it starts playing
+		j.addToHistory(song)
 
 		// Update Discord status with the current song information in format "Artist - Title (Album)"
 		var statusText string
@@ -772,3 +780,33 @@ func (j *JukeboxPlayer) GetCurrentSong() *subsonic.Song {
 	defer j.playingMutex.Unlock()
 	return j.currentSong
 }
+
+// addToHistory adds a song to the playback history
+func (j *JukeboxPlayer) addToHistory(song *subsonic.Song) {
+	if song == nil {
+		return
+	}
+	
+	j.historyMutex.Lock()
+	defer j.historyMutex.Unlock()
+	
+	// Add the song to the beginning of the history list
+	j.songHistory = append([]*subsonic.Song{song}, j.songHistory...)
+	
+	// Trim the history if it exceeds the maximum size
+	if len(j.songHistory) > j.maxHistorySize {
+		j.songHistory = j.songHistory[:j.maxHistorySize]
+	}
+}
+
+// GetSongHistory returns a copy of the playback history
+func (j *JukeboxPlayer) GetSongHistory() []*subsonic.Song {
+	j.historyMutex.RLock()
+	defer j.historyMutex.RUnlock()
+	
+	// Create a copy of the history to return
+	history := make([]*subsonic.Song, len(j.songHistory))
+	copy(history, j.songHistory)
+	
+	return history
+}