import '../playback/playback_engine.dart';
import 'messages.dart';

/// Apply a wire [RemoteCommand] to a [PlaybackCommands] target — the single
/// place the protocol's verbs map onto the playback surface. The host uses it
/// to drive its local engine from a remote's commands; keeping it transport-
/// free (no sockets) lets the loopback test exercise the mapping directly.
Future<void> applyRemoteCommand(
  PlaybackCommands target,
  RemoteCommand cmd,
) async {
  switch (cmd.op) {
    case RemoteOp.playPause:
      await target.togglePlayPause();
    case RemoteOp.next:
      await target.next();
    case RemoteOp.previous:
      await target.previous();
    case RemoteOp.seek:
      await target.seek(Duration(milliseconds: cmd.positionMs ?? 0));
    case RemoteOp.jumpTo:
      await target.jumpTo(cmd.index ?? 0);
    case RemoteOp.playSongs:
      await target.playSongs(cmd.songs ?? const [],
          startIndex: cmd.startIndex ?? 0);
    case RemoteOp.playNext:
      if (cmd.song != null) await target.playNext(cmd.song!);
    case RemoteOp.addToQueue:
      if (cmd.song != null) await target.addToQueue(cmd.song!);
    case RemoteOp.removeAt:
      await target.removeAt(cmd.index ?? 0);
    case RemoteOp.reorder:
      await target.reorderQueue(cmd.oldIndex ?? 0, cmd.newIndex ?? 0);
    case RemoteOp.toggleShuffle:
      await target.toggleShuffle();
    case RemoteOp.cycleLoop:
      await target.cycleLoop();
    case RemoteOp.retry:
      await target.retry();
  }
}