init

client/lib/features/comprehensive_test/services/test_service.dart

@@ -0,0 +1,468 @@
+import '../models/test_models.dart';
+import '../data/test_static_data.dart';
+import '../../../core/models/api_response.dart';
+
+/// 综合测试服务类
+class TestService {
+  // 单例模式
+  static final TestService _instance = TestService._internal();
+  factory TestService() => _instance;
+  TestService._internal();
+
+  /// 获取所有测试模板
+  Future<ApiResponse<List<TestTemplate>>> getTestTemplates() async {
+    try {
+      // 模拟网络延迟
+      await Future.delayed(const Duration(milliseconds: 500));
+      
+      final templates = TestStaticData.getAllTemplates();
+      return ApiResponse.success(
+        data: templates,
+        message: '获取测试模板成功',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '获取测试模板失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 根据类型获取测试模板
+  Future<ApiResponse<List<TestTemplate>>> getTestTemplatesByType(
+    TestType type,
+  ) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 300));
+      
+      final templates = TestStaticData.getTemplatesByType(type);
+      return ApiResponse.success(
+        data: templates,
+        message: '获取${_getTestTypeName(type)}模板成功',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '获取测试模板失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 根据ID获取测试模板
+  Future<ApiResponse<TestTemplate>> getTestTemplateById(String id) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 200));
+      
+      final template = TestStaticData.getTemplateById(id);
+      if (template == null) {
+        return ApiResponse.error(message: '测试模板不存在');
+      }
+      
+      return ApiResponse.success(
+        data: template,
+        message: '获取测试模板成功',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '获取测试模板失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 创建测试会话
+  Future<ApiResponse<TestSession>> createTestSession({
+    required String templateId,
+    required String userId,
+  }) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 800));
+      
+      final session = TestStaticData.createTestSession(
+        templateId: templateId,
+        userId: userId,
+      );
+      
+      return ApiResponse.success(
+        data: session,
+        message: '创建测试会话成功',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '创建测试会话失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 开始测试
+  Future<ApiResponse<TestSession>> startTest(String sessionId) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 300));
+      
+      // 模拟开始测试，实际应用中会更新数据库中的会话状态
+      // 这里返回一个模拟的已开始的会话
+      return ApiResponse.success(
+        data: TestSession(
+          id: sessionId,
+          templateId: 'template_quick',
+          userId: 'user_001',
+          status: TestStatus.inProgress,
+          questions: TestStaticData.getQuestionsByIds(['vocab_001', 'grammar_001']),
+          answers: [],
+          currentQuestionIndex: 0,
+          startTime: DateTime.now(),
+          timeRemaining: 900, // 15分钟
+        ),
+        message: '测试已开始',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '开始测试失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 提交答案
+  Future<ApiResponse<TestSession>> submitAnswer({
+    required String sessionId,
+    required UserAnswer answer,
+  }) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 400));
+      
+      // 模拟提交答案并返回更新后的会话
+      return ApiResponse.success(
+        data: TestSession(
+          id: sessionId,
+          templateId: 'template_quick',
+          userId: 'user_001',
+          status: TestStatus.inProgress,
+          questions: TestStaticData.getQuestionsByIds(['vocab_001', 'grammar_001']),
+          answers: [answer],
+          currentQuestionIndex: 1,
+          startTime: DateTime.now().subtract(const Duration(minutes: 5)),
+          timeRemaining: 600, // 剩余10分钟
+        ),
+        message: '答案提交成功',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '提交答案失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 暂停测试
+  Future<ApiResponse<TestSession>> pauseTest(String sessionId) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 200));
+      
+      return ApiResponse.success(
+        data: TestSession(
+          id: sessionId,
+          templateId: 'template_quick',
+          userId: 'user_001',
+          status: TestStatus.paused,
+          questions: TestStaticData.getQuestionsByIds(['vocab_001', 'grammar_001']),
+          answers: [],
+          currentQuestionIndex: 0,
+          startTime: DateTime.now().subtract(const Duration(minutes: 5)),
+          timeRemaining: 600,
+        ),
+        message: '测试已暂停',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '暂停测试失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 恢复测试
+  Future<ApiResponse<TestSession>> resumeTest(String sessionId) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 200));
+      
+      return ApiResponse.success(
+        data: TestSession(
+          id: sessionId,
+          templateId: 'template_quick',
+          userId: 'user_001',
+          status: TestStatus.inProgress,
+          questions: TestStaticData.getQuestionsByIds(['vocab_001', 'grammar_001']),
+          answers: [],
+          currentQuestionIndex: 0,
+          startTime: DateTime.now().subtract(const Duration(minutes: 5)),
+          timeRemaining: 600,
+        ),
+        message: '测试已恢复',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '恢复测试失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 完成测试
+  Future<ApiResponse<TestResult>> completeTest({
+    required String sessionId,
+    required List<UserAnswer> answers,
+  }) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 1000));
+      
+      // 模拟计算测试结果
+      final result = _calculateTestResult(sessionId, answers);
+      
+      // 保存结果到静态数据
+      TestStaticData.addTestResult(result);
+      
+      return ApiResponse.success(
+        data: result,
+        message: '测试完成，结果已保存',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '完成测试失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 获取用户测试历史
+  Future<ApiResponse<List<TestResult>>> getUserTestHistory(
+    String userId, {
+    int page = 1,
+    int limit = 10,
+  }) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 600));
+      
+      final allResults = TestStaticData.getUserResults(userId);
+      final startIndex = (page - 1) * limit;
+      final endIndex = startIndex + limit;
+      
+      final results = allResults.length > startIndex
+          ? allResults.sublist(
+              startIndex,
+              endIndex > allResults.length ? allResults.length : endIndex,
+            )
+          : <TestResult>[];
+      
+      return ApiResponse.success(
+        data: results,
+        message: '获取测试历史成功',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '获取测试历史失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 获取最近的测试结果
+  Future<ApiResponse<List<TestResult>>> getRecentTestResults(
+    String userId, {
+    int limit = 5,
+  }) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 400));
+      
+      final results = TestStaticData.getRecentResults(userId, limit: limit);
+      return ApiResponse.success(
+        data: results,
+        message: '获取最近测试结果成功',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '获取最近测试结果失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 获取测试结果详情
+  Future<ApiResponse<TestResult>> getTestResultById(String resultId) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 300));
+      
+      final result = TestStaticData.getResultById(resultId);
+      if (result == null) {
+        return ApiResponse.error(message: '测试结果不存在');
+      }
+      
+      return ApiResponse.success(
+        data: result,
+        message: '获取测试结果成功',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '获取测试结果失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 获取用户技能统计
+  Future<ApiResponse<Map<SkillType, double>>> getUserSkillStatistics(
+    String userId,
+  ) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 500));
+      
+      final statistics = TestStaticData.getSkillStatistics(userId);
+      return ApiResponse.success(
+        data: statistics,
+        message: '获取技能统计成功',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '获取技能统计失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 获取题目统计
+  Future<ApiResponse<Map<String, dynamic>>> getQuestionStatistics() async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 300));
+      
+      final difficultyStats = TestStaticData.getDifficultyStatistics();
+      final skillStats = TestStaticData.getSkillDistributionStatistics();
+      
+      return ApiResponse.success(
+        data: {
+          'difficultyDistribution': difficultyStats,
+          'skillDistribution': skillStats,
+          'totalQuestions': TestStaticData.getAllQuestions().length,
+        },
+        message: '获取题目统计成功',
+      );
+    } catch (e) {
+      return ApiResponse.error(
+        message: '获取题目统计失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 删除测试结果
+  Future<ApiResponse<bool>> deleteTestResult(String resultId) async {
+    try {
+      await Future.delayed(const Duration(milliseconds: 300));
+      
+      final success = TestStaticData.deleteTestResult(resultId);
+      if (success) {
+        return ApiResponse.success(
+          data: true,
+          message: '删除测试结果成功',
+        );
+      } else {
+        return ApiResponse.error(message: '测试结果不存在');
+      }
+    } catch (e) {
+      return ApiResponse.error(
+        message: '删除测试结果失败: ${e.toString()}',
+      );
+    }
+  }
+
+  /// 获取测试类型名称
+  String _getTestTypeName(TestType type) {
+    switch (type) {
+      case TestType.quick:
+        return '快速测试';
+      case TestType.standard:
+        return '标准测试';
+      case TestType.full:
+        return '完整测试';
+      case TestType.mock:
+        return '模拟考试';
+      case TestType.vocabulary:
+        return '词汇专项';
+      case TestType.grammar:
+        return '语法专项';
+      case TestType.reading:
+        return '阅读专项';
+      case TestType.listening:
+        return '听力专项';
+      case TestType.speaking:
+        return '口语专项';
+      case TestType.writing:
+        return '写作专项';
+    }
+  }
+
+  /// 计算测试结果（模拟）
+  TestResult _calculateTestResult(String sessionId, List<UserAnswer> answers) {
+    // 这里是一个简化的计算逻辑，实际应用中会更复杂
+    final totalQuestions = answers.length;
+    final correctAnswers = (totalQuestions * 0.8).round(); // 模拟80%正确率
+    final totalScore = correctAnswers;
+    final maxScore = totalQuestions;
+    final percentage = (totalScore / maxScore) * 100;
+    
+    return TestResult(
+      id: 'result_${DateTime.now().millisecondsSinceEpoch}',
+      testId: 'template_quick',
+      userId: 'user_001',
+      testType: TestType.quick,
+      totalScore: totalScore,
+      maxScore: maxScore,
+      percentage: percentage,
+      overallLevel: _calculateOverallLevel(percentage),
+      skillScores: _calculateSkillScores(answers),
+      answers: answers,
+      startTime: DateTime.now().subtract(const Duration(minutes: 15)),
+      endTime: DateTime.now(),
+      duration: 900,
+      feedback: _generateFeedback(percentage),
+      recommendations: {
+        'nextLevel': 'intermediate',
+        'focusAreas': ['grammar', 'vocabulary'],
+        'suggestedStudyTime': 45,
+      },
+    );
+  }
+
+  /// 计算整体水平
+  DifficultyLevel _calculateOverallLevel(double percentage) {
+    if (percentage >= 90) return DifficultyLevel.advanced;
+    if (percentage >= 80) return DifficultyLevel.upperIntermediate;
+    if (percentage >= 70) return DifficultyLevel.intermediate;
+    if (percentage >= 60) return DifficultyLevel.elementary;
+    return DifficultyLevel.beginner;
+  }
+
+  /// 计算技能得分
+  List<SkillScore> _calculateSkillScores(List<UserAnswer> answers) {
+    // 简化的技能得分计算
+    return [
+      SkillScore(
+        skillType: SkillType.vocabulary,
+        score: 4,
+        maxScore: 5,
+        percentage: 80.0,
+        level: DifficultyLevel.elementary,
+        feedback: '词汇掌握良好',
+      ),
+      SkillScore(
+        skillType: SkillType.grammar,
+        score: 3,
+        maxScore: 4,
+        percentage: 75.0,
+        level: DifficultyLevel.elementary,
+        feedback: '语法基础扎实',
+      ),
+    ];
+  }
+
+  /// 生成反馈
+  String _generateFeedback(double percentage) {
+    if (percentage >= 90) {
+      return '优秀！您的英语水平很高，继续保持。';
+    } else if (percentage >= 80) {
+      return '良好！您的英语基础扎实，可以尝试更高难度的内容。';
+    } else if (percentage >= 70) {
+      return '不错！您的英语水平中等，建议加强薄弱环节的练习。';
+    } else if (percentage >= 60) {
+      return '及格！您的英语基础还需要加强，建议多练习基础知识。';
+    } else {
+      return '需要努力！建议从基础开始，系统性地学习英语。';
+    }
+  }
+}