// "配方"模型，定义了所有可编辑的参数
class Recipe {
  String id;
  String baseImagePath;
  double brightness;
  double contrast;
  double saturation;
  double blur;
  double pixelate;
  String overlayText;
  String fontFamily;
  int textColor; // 存储为 ARGB 整数

  Recipe({
    required this.id,
    required this.baseImagePath,
    this.brightness = 0.0, // 亮度 (-1 to 1, default 0)
    this.contrast = 1.0, // 对比度 (0 to 4, default 1)
    this.saturation = 1.0, // 饱和度 (0 to 4, default 1)
    this.blur = 0.0, // 模糊 (0 to 20, default 0)
    this.pixelate = 1.0, // 像素化 (1 to 30, default 1 = off)
    this.overlayText = '',
    this.fontFamily = 'Lato',
    this.textColor = 0xFFFFFFFF, // 默认白色
  });

  // 转换为 JSON (用于存储到 shared_preferences)
  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'baseImagePath': baseImagePath,
      'brightness': brightness,
      'contrast': contrast,
      'saturation': saturation,
      'blur': blur,
      'pixelate': pixelate,
      'overlayText': overlayText,
      'fontFamily': fontFamily,
      'textColor': textColor,
    };
  }

  // 从 JSON 恢复 (用于从 shared_preferences 读取)
  factory Recipe.fromJson(Map<String, dynamic> json) {
    return Recipe(
      id: json['id'],
      baseImagePath: json['baseImagePath'],
      brightness: json['brightness'] ?? 0.0,
      contrast: json['contrast'] ?? 1.0,
      saturation: json['saturation'] ?? 1.0,
      blur: json['blur'] ?? 0.0,
      pixelate: json['pixelate'] ?? 1.0,
      overlayText: json['overlayText'] ?? '',
      fontFamily: json['fontFamily'] ?? 'Lato',
      textColor: json['textColor'] ?? 0xFFFFFFFF,
    );
  }

  // 辅助函数，用于快速序列化
  String toJsonString() {
    // 简单的JSON序列化，不依赖dart:convert
    return '{"id":"$id","baseImagePath":"$baseImagePath","brightness":$brightness,"contrast":$contrast,"saturation":$saturation,"blur":$blur,"pixelate":$pixelate,"overlayText":"$overlayText","fontFamily":"$fontFamily","textColor":$textColor}';
  }

  // 辅助函数，用于快速反序列化
  factory Recipe.fromJsonString(String str) {
    // 简单的JSON解析，不依赖dart:convert
    // 这里需要更复杂的解析逻辑，暂时返回默认值
    return Recipe(id: '', baseImagePath: '');
  }

  // 实现相等性比较，用于检测变化
  @override
  bool operator ==(Object other) {
    if (identical(this, other)) return true;
    if (other is! Recipe) return false;

    return id == other.id &&
        baseImagePath == other.baseImagePath &&
        brightness == other.brightness &&
        contrast == other.contrast &&
        saturation == other.saturation &&
        blur == other.blur &&
        pixelate == other.pixelate &&
        overlayText == other.overlayText &&
        fontFamily == other.fontFamily &&
        textColor == other.textColor;
  }

  @override
  int get hashCode {
    return Object.hash(
      id,
      baseImagePath,
      brightness,
      contrast,
      saturation,
      blur,
      pixelate,
      overlayText,
      fontFamily,
      textColor,
    );
  }

  // 创建副本的方法
  Recipe copyWith({
    String? id,
    String? baseImagePath,
    double? brightness,
    double? contrast,
    double? saturation,
    double? blur,
    double? pixelate,
    String? overlayText,
    String? fontFamily,
    int? textColor,
  }) {
    return Recipe(
      id: id ?? this.id,
      baseImagePath: baseImagePath ?? this.baseImagePath,
      brightness: brightness ?? this.brightness,
      contrast: contrast ?? this.contrast,
      saturation: saturation ?? this.saturation,
      blur: blur ?? this.blur,
      pixelate: pixelate ?? this.pixelate,
      overlayText: overlayText ?? this.overlayText,
      fontFamily: fontFamily ?? this.fontFamily,
      textColor: textColor ?? this.textColor,
    );
  }
}