This code is needed to implement MediaPlayer functionality. Since the project itself is multiplatform.

    class AudioPlayerImp(private val client: HttpClient) : AudioPlayer {
    private var mediaPlayer: MediaPlayer? = null
    private var playerState: PlayerState = PlayerState.IDLE
    override suspend fun play(audioUrl: String) {
        stop()
        val downloadsDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
        val fileName = audioUrl.split("/").last()
        val filePath = "${downloadsDir.absolutePath}/$fileName"
        val file = File(filePath)
        if (!file.exists()) {
            client.downloadAndSave(audioUrl, fileName)
            return
        }
        mediaPlayer = MediaPlayer().apply {
            setDataSource(filePath)
            setOnPreparedListener {
                setPlayerState(PlayerState.PREPARED)
                // Начать воспроизведение после подготовки
                if (getPlayerState() == PlayerState.PREPARED) {
                    start()
                    setPlayerState(PlayerState.PLAYING)
                }
            }
            setOnBufferingUpdateListener { _, percent ->
                if (getPlayerState() == PlayerState.COMPLETED || getPlayerState() == PlayerState.PAUSED) {
                    return@setOnBufferingUpdateListener
                }
                if (!isPlaying && percent >= 50) { // Порог буферизации в 50%
                    if (getPlayerState() == PlayerState.PREPARED) {
                        start()
                        setPlayerState(PlayerState.PLAYING)
                    }
                }
            }
            setOnCompletionListener {
                setPlayerState(PlayerState.COMPLETED)
            }
            setOnErrorListener { _, what, extra ->
                setPlayerState(PlayerState.ERROR)
                true  Ошибка обработана
            }
            prepareAsync() Асинхронная подготовка MediaPlayer
        }
    }
}

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