init

client/lib/features/speaking/models/speaking_scenario.dart

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+enum SpeakingScenario {
+  dailyConversation,
+  businessMeeting,
+  jobInterview,
+  shopping,
+  restaurant,
+  travel,
+  academic,
+  socializing,
+  phoneCall,
+  presentation;
+
+  String get displayName {
+    switch (this) {
+      case SpeakingScenario.dailyConversation:
+        return '日常对话';
+      case SpeakingScenario.businessMeeting:
+        return '商务会议';
+      case SpeakingScenario.jobInterview:
+        return '求职面试';
+      case SpeakingScenario.shopping:
+        return '购物';
+      case SpeakingScenario.restaurant:
+        return '餐厅';
+      case SpeakingScenario.travel:
+        return '旅行';
+      case SpeakingScenario.academic:
+        return '学术讨论';
+      case SpeakingScenario.socializing:
+        return '社交聚会';
+      case SpeakingScenario.phoneCall:
+        return '电话通话';
+      case SpeakingScenario.presentation:
+        return '演讲展示';
+    }
+  }
+
+  String get description {
+    switch (this) {
+      case SpeakingScenario.dailyConversation:
+        return '练习日常生活中的基本对话';
+      case SpeakingScenario.businessMeeting:
+        return '提升商务环境下的沟通能力';
+      case SpeakingScenario.jobInterview:
+        return '准备求职面试的常见问题';
+      case SpeakingScenario.shopping:
+        return '学习购物时的实用表达';
+      case SpeakingScenario.restaurant:
+        return '掌握餐厅点餐的对话技巧';
+      case SpeakingScenario.travel:
+        return '旅行中的必备口语交流';
+      case SpeakingScenario.academic:
+        return '学术环境下的专业讨论';
+      case SpeakingScenario.socializing:
+        return '社交场合的自然交流';
+      case SpeakingScenario.phoneCall:
+        return '电话沟通的特殊技巧';
+      case SpeakingScenario.presentation:
+        return '公开演讲和展示技能';
+    }
+  }
+}
+
+enum SpeakingDifficulty {
+  beginner,
+  elementary,
+  intermediate,
+  upperIntermediate,
+  advanced;
+
+  String get displayName {
+    switch (this) {
+      case SpeakingDifficulty.beginner:
+        return '初学者';
+      case SpeakingDifficulty.elementary:
+        return '基础';
+      case SpeakingDifficulty.intermediate:
+        return '中级';
+      case SpeakingDifficulty.upperIntermediate:
+        return '中高级';
+      case SpeakingDifficulty.advanced:
+        return '高级';
+    }
+  }
+}
+
+class SpeakingTask {
+  final String id;
+  final String title;
+  final String description;
+  final SpeakingScenario scenario;
+  final SpeakingDifficulty difficulty;
+  final List<String> objectives;
+  final List<String> keyPhrases;
+  final String? backgroundInfo;
+  final int estimatedDuration; // 预估时长（分钟）
+  final bool isRecommended; // 是否推荐
+  final bool isFavorite; // 是否收藏
+  final int completionCount; // 完成次数
+  final DateTime createdAt;
+  final DateTime updatedAt;
+
+  const SpeakingTask({
+    required this.id,
+    required this.title,
+    required this.description,
+    required this.scenario,
+    required this.difficulty,
+    required this.objectives,
+    required this.keyPhrases,
+    this.backgroundInfo,
+    required this.estimatedDuration,
+    this.isRecommended = false,
+    this.isFavorite = false,
+    this.completionCount = 0,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  factory SpeakingTask.fromJson(Map<String, dynamic> json) {
+    return SpeakingTask(
+      id: json['id'] as String,
+      title: json['title'] as String,
+      description: json['description'] as String,
+      scenario: SpeakingScenario.values.firstWhere(
+        (e) => e.name == json['scenario'],
+        orElse: () => SpeakingScenario.dailyConversation,
+      ),
+      difficulty: SpeakingDifficulty.values.firstWhere(
+        (e) => e.name == json['difficulty'],
+        orElse: () => SpeakingDifficulty.intermediate,
+      ),
+      objectives: List<String>.from(json['objectives'] ?? []),
+      keyPhrases: List<String>.from(json['keyPhrases'] ?? []),
+      backgroundInfo: json['backgroundInfo'] as String?,
+      estimatedDuration: json['estimatedDuration'] as int,
+      isRecommended: json['isRecommended'] as bool? ?? false,
+      isFavorite: json['isFavorite'] as bool? ?? false,
+      completionCount: json['completionCount'] as int? ?? 0,
+      createdAt: DateTime.parse(json['createdAt'] as String),
+      updatedAt: DateTime.parse(json['updatedAt'] as String),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'title': title,
+      'description': description,
+      'scenario': scenario.name,
+      'difficulty': difficulty.name,
+      'objectives': objectives,
+      'keyPhrases': keyPhrases,
+      'backgroundInfo': backgroundInfo,
+      'estimatedDuration': estimatedDuration,
+      'isRecommended': isRecommended,
+      'isFavorite': isFavorite,
+      'completionCount': completionCount,
+      'createdAt': createdAt.toIso8601String(),
+      'updatedAt': updatedAt.toIso8601String(),
+    };
+  }
+}