398 lines
9.8 KiB
Dart
398 lines
9.8 KiB
Dart
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import 'package:json_annotation/json_annotation.dart';
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import 'word_model.dart';
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part 'study_session_model.g.dart';
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/// 学习模式
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enum StudyMode {
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@JsonValue('new_words')
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newWords, // 学习新单词
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@JsonValue('review')
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review, // 复习单词
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@JsonValue('mixed')
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mixed, // 混合模式
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@JsonValue('test')
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test, // 测试模式
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@JsonValue('quick_review')
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quickReview, // 快速复习
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}
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/// 练习类型
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enum ExerciseType {
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@JsonValue('word_meaning')
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wordMeaning, // 单词释义
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@JsonValue('meaning_word')
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meaningWord, // 释义选单词
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@JsonValue('spelling')
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spelling, // 拼写练习
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@JsonValue('listening')
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listening, // 听力练习
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@JsonValue('sentence_completion')
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sentenceCompletion, // 句子填空
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@JsonValue('synonym_antonym')
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synonymAntonym, // 同义词反义词
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@JsonValue('image_word')
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imageWord, // 图片识词
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}
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/// 答题结果
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enum AnswerResult {
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@JsonValue('correct')
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correct,
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@JsonValue('wrong')
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wrong,
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@JsonValue('skipped')
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skipped,
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}
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/// 学习会话
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@JsonSerializable()
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class StudySession {
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/// 会话ID
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final String id;
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/// 用户ID
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final String userId;
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/// 词汇书ID
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final String? vocabularyBookId;
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/// 学习模式
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final StudyMode mode;
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/// 目标单词数
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final int targetWordCount;
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/// 实际学习单词数
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final int actualWordCount;
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/// 正确答题数
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final int correctAnswers;
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/// 错误答题数
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final int wrongAnswers;
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/// 跳过答题数
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final int skippedAnswers;
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/// 学习时长（秒）
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final int durationSeconds;
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/// 准确率
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final double accuracy;
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/// 获得经验值
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final int experienceGained;
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/// 获得积分
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final int pointsGained;
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/// 是否完成
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final bool isCompleted;
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/// 开始时间
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final DateTime startedAt;
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/// 结束时间
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final DateTime? endedAt;
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/// 创建时间
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final DateTime createdAt;
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const StudySession({
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required this.id,
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required this.userId,
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this.vocabularyBookId,
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required this.mode,
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required this.targetWordCount,
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this.actualWordCount = 0,
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this.correctAnswers = 0,
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this.wrongAnswers = 0,
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this.skippedAnswers = 0,
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this.durationSeconds = 0,
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this.accuracy = 0.0,
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this.experienceGained = 0,
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this.pointsGained = 0,
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this.isCompleted = false,
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required this.startedAt,
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this.endedAt,
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required this.createdAt,
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});
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factory StudySession.fromJson(Map<String, dynamic> json) => _$StudySessionFromJson(json);
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Map<String, dynamic> toJson() => _$StudySessionToJson(this);
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StudySession copyWith({
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String? id,
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String? userId,
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String? vocabularyBookId,
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StudyMode? mode,
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int? targetWordCount,
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int? actualWordCount,
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int? correctAnswers,
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int? wrongAnswers,
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int? skippedAnswers,
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int? durationSeconds,
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double? accuracy,
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int? experienceGained,
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int? pointsGained,
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bool? isCompleted,
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DateTime? startedAt,
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DateTime? endedAt,
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DateTime? createdAt,
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}) {
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return StudySession(
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id: id ?? this.id,
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userId: userId ?? this.userId,
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vocabularyBookId: vocabularyBookId ?? this.vocabularyBookId,
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mode: mode ?? this.mode,
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targetWordCount: targetWordCount ?? this.targetWordCount,
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actualWordCount: actualWordCount ?? this.actualWordCount,
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correctAnswers: correctAnswers ?? this.correctAnswers,
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wrongAnswers: wrongAnswers ?? this.wrongAnswers,
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skippedAnswers: skippedAnswers ?? this.skippedAnswers,
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durationSeconds: durationSeconds ?? this.durationSeconds,
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accuracy: accuracy ?? this.accuracy,
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experienceGained: experienceGained ?? this.experienceGained,
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pointsGained: pointsGained ?? this.pointsGained,
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isCompleted: isCompleted ?? this.isCompleted,
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startedAt: startedAt ?? this.startedAt,
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endedAt: endedAt ?? this.endedAt,
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createdAt: createdAt ?? this.createdAt,
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);
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}
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/// 总答题数
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int get totalAnswers => correctAnswers + wrongAnswers + skippedAnswers;
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/// 计算准确率
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double calculateAccuracy() {
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if (totalAnswers == 0) return 0.0;
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return correctAnswers / totalAnswers;
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}
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/// 学习时长（分钟）
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double get durationMinutes => durationSeconds / 60.0;
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}
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/// 单词练习记录
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@JsonSerializable()
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class WordExerciseRecord {
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/// 记录ID
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final String id;
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/// 学习会话ID
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final String sessionId;
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/// 单词ID
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final String wordId;
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/// 练习类型
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final ExerciseType exerciseType;
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/// 用户答案
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final String userAnswer;
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/// 正确答案
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final String correctAnswer;
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/// 答题结果
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final AnswerResult result;
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/// 答题时间（秒）
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final int responseTimeSeconds;
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/// 提示次数
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final int hintCount;
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/// 单词信息
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final Word? word;
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/// 答题时间
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final DateTime answeredAt;
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const WordExerciseRecord({
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required this.id,
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required this.sessionId,
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required this.wordId,
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required this.exerciseType,
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required this.userAnswer,
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required this.correctAnswer,
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required this.result,
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required this.responseTimeSeconds,
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this.hintCount = 0,
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this.word,
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required this.answeredAt,
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});
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factory WordExerciseRecord.fromJson(Map<String, dynamic> json) => _$WordExerciseRecordFromJson(json);
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Map<String, dynamic> toJson() => _$WordExerciseRecordToJson(this);
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WordExerciseRecord copyWith({
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String? id,
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String? sessionId,
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String? wordId,
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ExerciseType? exerciseType,
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String? userAnswer,
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String? correctAnswer,
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AnswerResult? result,
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int? responseTimeSeconds,
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int? hintCount,
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Word? word,
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DateTime? answeredAt,
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}) {
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return WordExerciseRecord(
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id: id ?? this.id,
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sessionId: sessionId ?? this.sessionId,
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wordId: wordId ?? this.wordId,
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exerciseType: exerciseType ?? this.exerciseType,
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userAnswer: userAnswer ?? this.userAnswer,
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correctAnswer: correctAnswer ?? this.correctAnswer,
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result: result ?? this.result,
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responseTimeSeconds: responseTimeSeconds ?? this.responseTimeSeconds,
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hintCount: hintCount ?? this.hintCount,
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word: word ?? this.word,
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answeredAt: answeredAt ?? this.answeredAt,
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);
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}
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/// 是否正确
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bool get isCorrect => result == AnswerResult.correct;
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/// 是否错误
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bool get isWrong => result == AnswerResult.wrong;
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/// 是否跳过
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bool get isSkipped => result == AnswerResult.skipped;
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/// 答题时间（分钟）
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double get responseTimeMinutes => responseTimeSeconds / 60.0;
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}
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/// 学习统计
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@JsonSerializable()
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class StudyStatistics {
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/// 统计ID
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final String id;
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/// 用户ID
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@JsonKey(name: 'user_id')
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final String userId;
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/// 统计日期
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final DateTime date;
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/// 学习会话数
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@JsonKey(name: 'session_count')
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final int sessionCount;
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/// 学习单词数
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@JsonKey(name: 'words_studied')
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final int wordsStudied;
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/// 新学单词数
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@JsonKey(name: 'new_words_learned')
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final int newWordsLearned;
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/// 复习单词数
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@JsonKey(name: 'words_reviewed')
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final int wordsReviewed;
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/// 掌握单词数
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@JsonKey(name: 'words_mastered')
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final int wordsMastered;
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/// 学习时长（秒）
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@JsonKey(name: 'total_study_time_seconds')
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final int totalStudyTimeSeconds;
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/// 正确答题数
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@JsonKey(name: 'correct_answers')
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final int correctAnswers;
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/// 错误答题数
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@JsonKey(name: 'wrong_answers')
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final int wrongAnswers;
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/// 平均准确率
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@JsonKey(name: 'average_accuracy')
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final double averageAccuracy;
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/// 获得经验值
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@JsonKey(name: 'experience_gained')
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final int experienceGained;
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/// 获得积分
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@JsonKey(name: 'points_gained')
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final int pointsGained;
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/// 连续学习天数
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@JsonKey(name: 'streak_days')
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final int streakDays;
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const StudyStatistics({
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required this.id,
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required this.userId,
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required this.date,
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this.sessionCount = 0,
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this.wordsStudied = 0,
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this.newWordsLearned = 0,
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this.wordsReviewed = 0,
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this.wordsMastered = 0,
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this.totalStudyTimeSeconds = 0,
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this.correctAnswers = 0,
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this.wrongAnswers = 0,
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this.averageAccuracy = 0.0,
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this.experienceGained = 0,
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this.pointsGained = 0,
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this.streakDays = 0,
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});
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factory StudyStatistics.fromJson(Map<String, dynamic> json) => _$StudyStatisticsFromJson(json);
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Map<String, dynamic> toJson() => _$StudyStatisticsToJson(this);
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StudyStatistics copyWith({
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String? id,
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String? userId,
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DateTime? date,
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int? sessionCount,
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int? wordsStudied,
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int? newWordsLearned,
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int? wordsReviewed,
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int? wordsMastered,
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int? totalStudyTimeSeconds,
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int? correctAnswers,
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int? wrongAnswers,
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double? averageAccuracy,
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int? experienceGained,
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int? pointsGained,
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int? streakDays,
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}) {
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return StudyStatistics(
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id: id ?? this.id,
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userId: userId ?? this.userId,
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date: date ?? this.date,
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sessionCount: sessionCount ?? this.sessionCount,
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wordsStudied: wordsStudied ?? this.wordsStudied,
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newWordsLearned: newWordsLearned ?? this.newWordsLearned,
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wordsReviewed: wordsReviewed ?? this.wordsReviewed,
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wordsMastered: wordsMastered ?? this.wordsMastered,
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totalStudyTimeSeconds: totalStudyTimeSeconds ?? this.totalStudyTimeSeconds,
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correctAnswers: correctAnswers ?? this.correctAnswers,
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wrongAnswers: wrongAnswers ?? this.wrongAnswers,
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averageAccuracy: averageAccuracy ?? this.averageAccuracy,
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experienceGained: experienceGained ?? this.experienceGained,
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pointsGained: pointsGained ?? this.pointsGained,
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streakDays: streakDays ?? this.streakDays,
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);
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}
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/// 总答题数
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int get totalAnswers => correctAnswers + wrongAnswers;
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/// 学习时长（分钟）
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double get totalStudyTimeMinutes => totalStudyTimeSeconds / 60.0;
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/// 学习时长（小时）
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double get totalStudyTimeHours => totalStudyTimeSeconds / 3600.0;
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}
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