import 'package:get/get.dart';
import '../../../data/services/language_manager.dart';

/// 图片翻译历史记录模型
class PictureTranslationHistory {
  final String id;
  final String imagePath;
  final String sourceText;
  final String translatedText;
  final String sourceLanguageCode;
  final String targetLanguageCode;
  final DateTime timestamp;
  final String? thumbnailPath; // 缩略图路径

  PictureTranslationHistory({
    required this.id,
    required this.imagePath,
    required this.sourceText,
    required this.translatedText,
    required this.sourceLanguageCode,
    required this.targetLanguageCode,
    required this.timestamp,
    this.thumbnailPath,
  });

  /// 从JSON创建实例
  factory PictureTranslationHistory.fromJson(Map<String, dynamic> json) {
    return PictureTranslationHistory(
      id: json['id'] ?? '',
      imagePath: json['imagePath'] ?? '',
      sourceText: json['sourceText'] ?? '',
      translatedText: json['translatedText'] ?? '',
      sourceLanguageCode: json['sourceLanguageCode'] ?? 'zh-CN',
      targetLanguageCode: json['targetLanguageCode'] ?? 'en-US',
      timestamp:
          DateTime.parse(json['timestamp'] ?? DateTime.now().toIso8601String()),
      thumbnailPath: json['thumbnailPath'],
    );
  }

  /// 转换为JSON
  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'imagePath': imagePath,
      'sourceText': sourceText,
      'translatedText': translatedText,
      'sourceLanguageCode': sourceLanguageCode,
      'targetLanguageCode': targetLanguageCode,
      'timestamp': timestamp.toIso8601String(),
      'thumbnailPath': thumbnailPath,
    };
  }

  /// 获取源语言中文名称
  String get sourceLanguageName {
    final languageManager = Get.find<LanguageManager>();
    return languageManager.getChineseNameByAsrCode(sourceLanguageCode) ??
        '未知语言';
  }

  /// 获取目标语言中文名称
  String get targetLanguageName {
    final languageManager = Get.find<LanguageManager>();
    return languageManager.getChineseNameByAsrCode(targetLanguageCode) ??
        '未知语言';
  }

  /// 创建副本
  PictureTranslationHistory copyWith({
    String? id,
    String? imagePath,
    String? sourceText,
    String? translatedText,
    String? sourceLanguageCode,
    String? targetLanguageCode,
    DateTime? timestamp,
    String? thumbnailPath,
  }) {
    return PictureTranslationHistory(
      id: id ?? this.id,
      imagePath: imagePath ?? this.imagePath,
      sourceText: sourceText ?? this.sourceText,
      translatedText: translatedText ?? this.translatedText,
      sourceLanguageCode: sourceLanguageCode ?? this.sourceLanguageCode,
      targetLanguageCode: targetLanguageCode ?? this.targetLanguageCode,
      timestamp: timestamp ?? this.timestamp,
      thumbnailPath: thumbnailPath ?? this.thumbnailPath,
    );
  }
}

/// 处理状态枚举
enum ProcessingStatus {
  idle, // 空闲
  picking, // 选择图片
  recognizing, // 识别文本
  translating, // 翻译文本
  saving, // 保存记录
  error, // 错误状态
}

/// 处理步骤信息
class ProcessingStep {
  final String title;
  final String description;
  final ProcessingStatus status;
  final double progress;
  final String? error;

  ProcessingStep({
    required this.title,
    required this.description,
    required this.status,
    this.progress = 0.0,
    this.error,
  });

  ProcessingStep copyWith({
    String? title,
    String? description,
    ProcessingStatus? status,
    double? progress,
    String? error,
  }) {
    return ProcessingStep(
      title: title ?? this.title,
      description: description ?? this.description,
      status: status ?? this.status,
      progress: progress ?? this.progress,
      error: error ?? this.error,
    );
  }
}

/// 图片翻译返回的坐标点模型（用于文本块四个点）
class Point2D {
  final int x;
  final int y;

  Point2D({required this.x, required this.y});

  /// 从JSON创建
  factory Point2D.fromJson(Map<String, dynamic> json) {
    return Point2D(
      x: (json['X'] ?? 0) as int,
      y: (json['Y'] ?? 0) as int,
    );
  }
}

/// 图片翻译返回的文本块模型
class ImageTextBlock {
  final List<Point2D> points; // 文本块四点坐标
  final String detectedLanguage; // 检测到的语种
  final String text; // 识别内容
  final String translation; // 翻译结果
  final List<int>? foreColor; // 文字平均色 RGBA
  final List<int>? backColor; // 背景平均色 RGBA

  ImageTextBlock({
    required this.points,
    required this.detectedLanguage,
    required this.text,
    required this.translation,
    this.foreColor,
    this.backColor,
  });

  /// 从JSON创建
  factory ImageTextBlock.fromJson(Map<String, dynamic> json) {
    final List<dynamic> pts = (json['Points'] ?? []) as List<dynamic>;
    return ImageTextBlock(
      points: pts.map((e) => Point2D.fromJson(e as Map<String, dynamic>)).toList(),
      detectedLanguage: (json['DetectedLanguage'] ?? '') as String,
      text: (json['Text'] ?? '') as String,
      translation: (json['Translation'] ?? '') as String,
      foreColor: (json['ForeColor'] as List?)?.map((e) => e as int).toList(),
      backColor: (json['BackColor'] as List?)?.map((e) => e as int).toList(),
    );
  }
}

/// 图片翻译结果模型（包含回贴后的图片和文本块列表）
class ImageTranslationResult {
  final List<int>? translatedImageBytes; // 回贴后的图片二进制（Uint8List）
  final List<ImageTextBlock> blocks; // 文本块列表
  final String? detectedLanguage; // 可选：整体检测到的语种

  ImageTranslationResult({
    required this.translatedImageBytes,
    required this.blocks,
    this.detectedLanguage,
  });
}