init

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

@@ -0,0 +1,193 @@
+/// 对话场景数据模型
+class ConversationScenario {
+  final String id;
+  final String title;
+  final String subtitle;
+  final String description;
+  final String duration;
+  final String level;
+  final ScenarioType type;
+  final List<String> objectives;
+  final List<String> keyPhrases;
+  final List<ScenarioStep> steps;
+  final DateTime createdAt;
+
+  ConversationScenario({
+    required this.id,
+    required this.title,
+    required this.subtitle,
+    required this.description,
+    required this.duration,
+    required this.level,
+    required this.type,
+    required this.objectives,
+    required this.keyPhrases,
+    required this.steps,
+    required this.createdAt,
+  });
+
+  factory ConversationScenario.fromJson(Map<String, dynamic> json) {
+    return ConversationScenario(
+      id: json['id'],
+      title: json['title'],
+      subtitle: json['subtitle'],
+      description: json['description'],
+      duration: json['duration'],
+      level: json['level'],
+      type: ScenarioType.values.firstWhere(
+        (e) => e.toString().split('.').last == json['type'],
+      ),
+      objectives: List<String>.from(json['objectives']),
+      keyPhrases: List<String>.from(json['keyPhrases']),
+      steps: (json['steps'] as List)
+          .map((step) => ScenarioStep.fromJson(step))
+          .toList(),
+      createdAt: DateTime.parse(json['createdAt']),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'title': title,
+      'subtitle': subtitle,
+      'description': description,
+      'duration': duration,
+      'level': level,
+      'type': type.toString().split('.').last,
+      'objectives': objectives,
+      'keyPhrases': keyPhrases,
+      'steps': steps.map((step) => step.toJson()).toList(),
+      'createdAt': createdAt.toIso8601String(),
+    };
+  }
+
+  ConversationScenario copyWith({
+    String? id,
+    String? title,
+    String? subtitle,
+    String? description,
+    String? duration,
+    String? level,
+    ScenarioType? type,
+    List<String>? objectives,
+    List<String>? keyPhrases,
+    List<ScenarioStep>? steps,
+    DateTime? createdAt,
+  }) {
+    return ConversationScenario(
+      id: id ?? this.id,
+      title: title ?? this.title,
+      subtitle: subtitle ?? this.subtitle,
+      description: description ?? this.description,
+      duration: duration ?? this.duration,
+      level: level ?? this.level,
+      type: type ?? this.type,
+      objectives: objectives ?? this.objectives,
+      keyPhrases: keyPhrases ?? this.keyPhrases,
+      steps: steps ?? this.steps,
+      createdAt: createdAt ?? this.createdAt,
+    );
+  }
+}
+
+/// 场景类型枚举
+enum ScenarioType {
+  restaurant,
+  interview,
+  business,
+  travel,
+  shopping,
+  medical,
+  education,
+  social,
+}
+
+extension ScenarioTypeExtension on ScenarioType {
+  String get displayName {
+    switch (this) {
+      case ScenarioType.restaurant:
+        return '餐厅用餐';
+      case ScenarioType.interview:
+        return '工作面试';
+      case ScenarioType.business:
+        return '商务会议';
+      case ScenarioType.travel:
+        return '旅行出行';
+      case ScenarioType.shopping:
+        return '购物消费';
+      case ScenarioType.medical:
+        return '医疗健康';
+      case ScenarioType.education:
+        return '教育学习';
+      case ScenarioType.social:
+        return '社交聚会';
+    }
+  }
+
+  String get icon {
+    switch (this) {
+      case ScenarioType.restaurant:
+        return '🍽️';
+      case ScenarioType.interview:
+        return '💼';
+      case ScenarioType.business:
+        return '🏢';
+      case ScenarioType.travel:
+        return '✈️';
+      case ScenarioType.shopping:
+        return '🛍️';
+      case ScenarioType.medical:
+        return '🏥';
+      case ScenarioType.education:
+        return '📚';
+      case ScenarioType.social:
+        return '🎉';
+    }
+  }
+}
+
+/// 场景步骤
+class ScenarioStep {
+  final int stepNumber;
+  final String title;
+  final String description;
+  final String role; // 'user' or 'npc'
+  final String content;
+  final List<String> options;
+  final String? correctOption;
+
+  ScenarioStep({
+    required this.stepNumber,
+    required this.title,
+    required this.description,
+    required this.role,
+    required this.content,
+    required this.options,
+    this.correctOption,
+  });
+
+  factory ScenarioStep.fromJson(Map<String, dynamic> json) {
+    return ScenarioStep(
+      stepNumber: json['stepNumber'],
+      title: json['title'],
+      description: json['description'],
+      role: json['role'],
+      content: json['content'],
+      options: List<String>.from(json['options']),
+      correctOption: json['correctOption'],
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'stepNumber': stepNumber,
+      'title': title,
+      'description': description,
+      'role': role,
+      'content': content,
+      'options': options,
+      'correctOption': correctOption,
+    };
+  }
+}