import 'package:plugin_platform_interface/plugin_platform_interface.dart';
import 'photo_classifier_method_channel.dart';
import 'models.dart';

abstract class PhotoClassifierPlatform extends PlatformInterface {
  PhotoClassifierPlatform() : super(token: _token);

  static final Object _token = Object();

  static PhotoClassifierPlatform _instance = MethodChannelPhotoClassifier();
  static PhotoClassifierPlatform get instance => _instance;
  static set instance(PhotoClassifierPlatform instance) {
    PlatformInterface.verifyToken(instance, _token);
    _instance = instance;
  }

  static String methodChannelName = 'com.atmob.photo_classifier';
  static String eventChannelName = 'com.atmob.photo_classifier_events';

  /// 开始照片分类过程, 返回包含分类进度和结果的事件流
  Stream<ClassificationEvent?> startClassificationStream({
    List<PhotoImageClassifyType> types = PhotoImageClassifyType.values,
  }) {
    throw UnimplementedError('startClassificationStream() has not been implemented.');
  }
  
  /// 配置照片分类器
  /// 
  /// [batchSize] 每批处理的图片数量
  /// [maxConcurrentProcessing] 最大并发处理数量
  /// [similarityThreshold] 相似度判定阈值（0.0-1.0），值越大表示要求越相似
  Future configureClassifier({
    int? batchSize, 
    int? maxConcurrentProcessing, 
    double? similarityThreshold,
  }) {
    throw UnimplementedError('configureClassifier() has not been implemented.');
  }
  
  /// 重置照片分类器
  Future resetClassifier() {
    throw UnimplementedError('resetClassifier() has not been implemented.');
  }
  
  /// 检查是否已加载完所有资源
  Future checkAssetsLoaded() {
    throw UnimplementedError('checkAssetsLoaded() has not been implemented.');
  }
}