import 'package:fis_common/event/event_type.dart';
import 'package:fis_measure/view/player/enums.dart';
import 'package:fis_measure/view/player/events.dart';
import 'package:fis_vid/data_channel/channel.dart';
import 'package:vid/us/vid_us_image.dart';

/// 播放器控制器
abstract class IPlayerController {
  /// 状态
  VidPlayStatus get status;

  /// 当前帧的信息
  VidUsImage? get currentFrame;

  /// 是否已释放
  bool get disposed;

  /// 数据通道
  VidDataChannel get dataChannel;

  /// 链接
  String get url;

  bool get hasView;

  /// 加载资源
  Future<bool> load();

  /// 定位到指定帧
  Future<bool> locateTo(int index);

  /// 播放
  void play();

  /// 暂停
  void pause();

  /// 释放资源
  void dispose();

  /// 事件处理
  late final FEventHandler<VidPlayerEvent> eventHandler;

  /// 帧更新事件
  late final FEventHandler<VidUsImage> frameUpdated;

  /// 首帧事件处理
  late final FEventHandler<VidUsImage> firstFrameLoaded;

  /// 单帧加载状态变更事件
  late final FEventHandler<bool> frameLoadStateChanged;

  /// 发生错误事件
  late final FEventHandler<String?> errorOccured;
}