init

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

@@ -0,0 +1,201 @@
+/// 发音练习项目数据模型
+class PronunciationItem {
+  final String id;
+  final String text;
+  final String phonetic;
+  final String audioUrl;
+  final PronunciationType type;
+  final DifficultyLevel difficulty;
+  final String category;
+  final List<String> tips;
+  final DateTime createdAt;
+
+  PronunciationItem({
+    required this.id,
+    required this.text,
+    required this.phonetic,
+    required this.audioUrl,
+    required this.type,
+    required this.difficulty,
+    required this.category,
+    required this.tips,
+    required this.createdAt,
+  });
+
+  factory PronunciationItem.fromJson(Map<String, dynamic> json) {
+    return PronunciationItem(
+      id: json['id'],
+      text: json['text'],
+      phonetic: json['phonetic'],
+      audioUrl: json['audioUrl'],
+      type: PronunciationType.values.firstWhere(
+        (e) => e.toString().split('.').last == json['type'],
+      ),
+      difficulty: DifficultyLevel.values.firstWhere(
+        (e) => e.toString().split('.').last == json['difficulty'],
+      ),
+      category: json['category'],
+      tips: List<String>.from(json['tips']),
+      createdAt: DateTime.parse(json['createdAt']),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'text': text,
+      'phonetic': phonetic,
+      'audioUrl': audioUrl,
+      'type': type.toString().split('.').last,
+      'difficulty': difficulty.toString().split('.').last,
+      'category': category,
+      'tips': tips,
+      'createdAt': createdAt.toIso8601String(),
+    };
+  }
+
+  PronunciationItem copyWith({
+    String? id,
+    String? text,
+    String? phonetic,
+    String? audioUrl,
+    PronunciationType? type,
+    DifficultyLevel? difficulty,
+    String? category,
+    List<String>? tips,
+    DateTime? createdAt,
+  }) {
+    return PronunciationItem(
+      id: id ?? this.id,
+      text: text ?? this.text,
+      phonetic: phonetic ?? this.phonetic,
+      audioUrl: audioUrl ?? this.audioUrl,
+      type: type ?? this.type,
+      difficulty: difficulty ?? this.difficulty,
+      category: category ?? this.category,
+      tips: tips ?? this.tips,
+      createdAt: createdAt ?? this.createdAt,
+    );
+  }
+}
+
+/// 发音练习类型
+enum PronunciationType {
+  word,
+  sentence,
+  phrase,
+  phoneme,
+}
+
+extension PronunciationTypeExtension on PronunciationType {
+  String get displayName {
+    switch (this) {
+      case PronunciationType.word:
+        return '单词发音';
+      case PronunciationType.sentence:
+        return '句子朗读';
+      case PronunciationType.phrase:
+        return '短语练习';
+      case PronunciationType.phoneme:
+        return '音素练习';
+    }
+  }
+
+  String get description {
+    switch (this) {
+      case PronunciationType.word:
+        return '练习单个单词的准确发音';
+      case PronunciationType.sentence:
+        return '练习完整句子的语调和节奏';
+      case PronunciationType.phrase:
+        return '练习常用短语的连读';
+      case PronunciationType.phoneme:
+        return '练习基础音素的发音';
+    }
+  }
+
+  String get icon {
+    switch (this) {
+      case PronunciationType.word:
+        return '🔤';
+      case PronunciationType.sentence:
+        return '📝';
+      case PronunciationType.phrase:
+        return '💬';
+      case PronunciationType.phoneme:
+        return '🔊';
+    }
+  }
+}
+
+/// 难度级别
+enum DifficultyLevel {
+  beginner,
+  intermediate,
+  advanced,
+}
+
+extension DifficultyLevelExtension on DifficultyLevel {
+  String get displayName {
+    switch (this) {
+      case DifficultyLevel.beginner:
+        return '初级';
+      case DifficultyLevel.intermediate:
+        return '中级';
+      case DifficultyLevel.advanced:
+        return '高级';
+    }
+  }
+
+  String get code {
+    switch (this) {
+      case DifficultyLevel.beginner:
+        return 'A1-A2';
+      case DifficultyLevel.intermediate:
+        return 'B1-B2';
+      case DifficultyLevel.advanced:
+        return 'C1-C2';
+    }
+  }
+}
+
+/// 发音练习记录
+class PronunciationRecord {
+  final String id;
+  final String itemId;
+  final double score;
+  final String feedback;
+  final DateTime practiceDate;
+  final int attempts;
+
+  PronunciationRecord({
+    required this.id,
+    required this.itemId,
+    required this.score,
+    required this.feedback,
+    required this.practiceDate,
+    required this.attempts,
+  });
+
+  factory PronunciationRecord.fromJson(Map<String, dynamic> json) {
+    return PronunciationRecord(
+      id: json['id'],
+      itemId: json['itemId'],
+      score: json['score'].toDouble(),
+      feedback: json['feedback'],
+      practiceDate: DateTime.parse(json['practiceDate']),
+      attempts: json['attempts'],
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'itemId': itemId,
+      'score': score,
+      'feedback': feedback,
+      'practiceDate': practiceDate.toIso8601String(),
+      'attempts': attempts,
+    };
+  }
+}