MusicPlayerFacade.kt

class MusicPlayerFacade {
    private val player = MediaPlayer()
    private val playlist = Playlist()

    fun play(song: Song) {
        playlist.clear()
        playlist.addSong(song)
        player.reset()
        player.setDataSource(song.filePath)
        player.prepare()
        player.start()
    }

    fun stop() {
        player.stop()
    }
}

class Song(val filePath: String)

class MediaPlayer {
    fun reset() {
        // Implementation for resetting the media player
    }

    fun setDataSource(filePath: String) {
        // Implementation for setting the data source for the media player
    }

    fun prepare() {
        // Implementation for preparing the media player
    }

    fun start() {
        // Implementation for starting the media player
    }

    fun stop() {
        // Implementation for stopping the media player
    }
}

class Playlist {
    private val songs = mutableListOf<Song>()

    fun clear() {
        songs.clear()
    }

    fun addSong(song: Song) {
        songs.add(song)
    }
}