yijing-bazi-mcp/src/engines/knowledge-engine.js

易经八字分析 MCP 服务器 - 提供传统命理分析和易经卦象解读的AI工具

/**
 * 知识引擎
 * 提供易经八字相关的学习、研究和知识管理功能
 */

const HexagramDatabase = require('../data/hexagram-database.js');
const BaziDatabase = require('../data/bazi-database.js');
const { KnowledgeDatabase } = require('../data/knowledge-database.js');
const Logger = require('../utils/logger.js');
const SearchEngine = require('../utils/search-engine.js');

class KnowledgeEngine {
  constructor() {
    this.hexagramDB = new HexagramDatabase();
    this.baziDB = new BaziDatabase();
    this.knowledgeDB = new KnowledgeDatabase();
    this.searchEngine = new SearchEngine();
    this.logger = new Logger();
  }

  /**
   * 提供知识学习服务
   * @param {Object} params - 参数对象
   * @param {string} params.topic - 学习主题
   * @param {string} params.system - 知识体系
   * @param {string} [params.level] - 学习级别
   * @param {string} [params.format] - 学习内容格式
   * @returns {Object} 学习内容
   */
  async provideKnowledge({ topic, system, level = 'beginner', format = 'text' }) {
    try {
      this.logger.info('开始提供知识学习服务', { topic, system, level, format });

      // 根据知识体系调整学习内容
      const focus_areas = this.getFocusAreasBySystem(system);
      const learning_style = this.getLearningStyleByFormat(format);

      // 调用核心学习方法
      const result = await this.learnKnowledge({
        topic,
        level,
        focus_areas,
        learning_style
      });

      // 添加系统特定信息
      result.system = system;
      result.format = format;

      this.logger.info('知识学习服务完成');
      return result;
    } catch (error) {
      this.logger.error('知识学习服务失败', { error: error.message });
      throw error;
    }
  }

  /**
   * 分析案例
   * @param {Object} params - 参数对象
   * @param {string} [params.case_id] - 案例ID
   * @param {string} params.system - 案例类型
   * @param {string} [params.category] - 案例分类
   * @param {Array} [params.analysis_focus] - 分析重点
   * @returns {Object} 案例分析结果
   */
  async analyzeCases({ case_id, system, category, analysis_focus = [] }) {
    try {
      this.logger.info('开始分析案例', { case_id, system, category, analysis_focus });

      let result;

      if (case_id) {
        // 分析特定案例
        const case_data = await this.getCaseById(case_id);
        result = await this.studyCase({
          case_type: system,
          case_data: case_data,
          analysis_focus: analysis_focus.join(',') || 'comprehensive',
          study_purpose: 'analysis'
        });
      } else {
        // 返回案例列表
        result = await this.getCasesList(system, category, analysis_focus);
      }

      this.logger.info('案例分析完成');
      return result;
    } catch (error) {
      this.logger.error('案例分析失败', { error: error.message });
      throw error;
    }
  }

  /**
   * 知识学习
   * @param {Object} params - 参数对象
   * @param {string} params.topic - 学习主题
   * @param {string} [params.level] - 学习级别
   * @param {Array} [params.focus_areas] - 关注领域
   * @param {string} [params.learning_style] - 学习风格
   * @returns {Object} 学习内容
   */
  async learnKnowledge({ topic, level = 'beginner', focus_areas = [], learning_style = 'comprehensive' }) {
    try {
      this.logger.info('开始知识学习', { topic, level, focus_areas, learning_style });

      // 获取主题相关的知识内容
      const topicContent = await this.getTopicContent(topic, level);

      // 根据学习风格组织内容
      const organizedContent = await this.organizeContentByStyle(topicContent, learning_style);

      // 生成学习路径
      const learningPath = await this.generateLearningPath(topic, level, focus_areas);

      // 提供实践练习
      const practiceExercises = await this.generatePracticeExercises(topic, level);

      // 推荐相关资源
      const relatedResources = await this.getRelatedResources(topic, level);

      // 生成学习评估
      const assessment = await this.generateLearningAssessment(topic, level);

      const result = {
        timestamp: new Date().toISOString(),
        topic: topic,
        level: level,
        focus_areas: focus_areas,
        learning_style: learning_style,
        content: organizedContent,
        learning_path: learningPath,
        practice_exercises: practiceExercises,
        related_resources: relatedResources,
        assessment: assessment,
        progress_tracking: this.generateProgressTracking(topic, level),
        next_steps: this.generateNextSteps(topic, level, focus_areas)
      };

      this.logger.info('知识学习内容生成完成');
      return result;
    } catch (error) {
      this.logger.error('知识学习失败', { error: error.message });
      throw error;
    }
  }

  /**
   * 案例研究
   * @param {Object} params - 参数对象
   * @param {string} params.case_type - 案例类型
   * @param {Object} [params.case_data] - 案例数据
   * @param {string} [params.analysis_focus] - 分析焦点
   * @param {string} [params.study_purpose] - 研究目的
   * @returns {Object} 案例研究结果
   */
  async studyCase({ case_type, case_data, analysis_focus = 'comprehensive', study_purpose = 'learning' }) {
    try {
      this.logger.info('开始案例研究', { case_type, analysis_focus, study_purpose });

      // 获取案例库中的相关案例
      const similarCases = await this.findSimilarCases(case_type, case_data);

      // 进行案例分析
      const caseAnalysis = await this.analyzeCaseData(case_data, case_type, analysis_focus);

      // 提取学习要点
      const learningPoints = await this.extractLearningPoints(caseAnalysis, similarCases);

      // 生成对比分析
      const comparativeAnalysis = await this.generateComparativeAnalysis(case_data, similarCases);

      // 总结经验教训
      const lessonsLearned = await this.extractLessonsLearned(caseAnalysis, comparativeAnalysis);

      // 生成应用指导
      const applicationGuidance = await this.generateApplicationGuidance(learningPoints, study_purpose);

      const result = {
        timestamp: new Date().toISOString(),
        case_type: case_type,
        analysis_focus: analysis_focus,
        study_purpose: study_purpose,
        case_analysis: caseAnalysis,
        similar_cases: similarCases,
        learning_points: learningPoints,
        comparative_analysis: comparativeAnalysis,
        lessons_learned: lessonsLearned,
        application_guidance: applicationGuidance,
        research_insights: this.generateResearchInsights(caseAnalysis, comparativeAnalysis),
        follow_up_studies: this.suggestFollowUpStudies(case_type, learningPoints)
      };

      this.logger.info('案例研究完成');
      return result;
    } catch (error) {
      this.logger.error('案例研究失败', { error: error.message });
      throw error;
    }
  }

  /**
   * 获取主题内容
   * @param {string} topic - 主题
   * @param {string} level - 级别
   * @returns {Object} 主题内容
   */
  async getTopicContent(topic, level) {
    const content = {
      basic_concepts: await this.getBasicConcepts(topic, level),
      theoretical_foundation: await this.getTheoreticalFoundation(topic, level),
      practical_applications: await this.getPracticalApplications(topic, level),
      historical_context: await this.getHistoricalContext(topic, level),
      modern_interpretations: await this.getModernInterpretations(topic, level)
    };

    // 根据级别调整内容深度
    switch (level) {
      case 'beginner':
        content.focus = 'basic_concepts';
        content.complexity = 'simple';
        break;
      case 'intermediate':
        content.focus = 'theoretical_foundation';
        content.complexity = 'moderate';
        break;
      case 'advanced':
        content.focus = 'practical_applications';
        content.complexity = 'complex';
        break;
      case 'expert':
        content.focus = 'modern_interpretations';
        content.complexity = 'comprehensive';
        break;
    }

    return content;
  }

  /**
   * 根据学习风格组织内容
   * @param {Object} content - 内容
   * @param {string} style - 学习风格
   * @returns {Object} 组织后的内容
   */
  async organizeContentByStyle(content, style) {
    switch (style) {
      case 'visual':
        return this.organizeVisualContent(content);
      case 'auditory':
        return this.organizeAuditoryContent(content);
      case 'kinesthetic':
        return this.organizeKinestheticContent(content);
      case 'reading':
        return this.organizeReadingContent(content);
      case 'comprehensive':
        return this.organizeComprehensiveContent(content);
      default:
        return content;
    }
  }

  /**
   * 生成学习路径
   * @param {string} topic - 主题
   * @param {string} level - 级别
   * @param {Array} focusAreas - 关注领域
   * @returns {Object} 学习路径
   */
  async generateLearningPath(topic, level, focusAreas) {
    const basePath = await this.getBaseLearningPath(topic, level);

    // 根据关注领域定制路径
    const customizedPath = this.customizeLearningPath(basePath, focusAreas);

    return {
      overview: customizedPath.overview,
      phases: customizedPath.phases,
      milestones: customizedPath.milestones,
      estimated_duration: customizedPath.estimated_duration,
      prerequisites: customizedPath.prerequisites,
      success_criteria: customizedPath.success_criteria
    };
  }

  /**
   * 生成实践练习
   * @param {string} topic - 主题
   * @param {string} level - 级别
   * @returns {Array} 练习列表
   */
  async generatePracticeExercises(topic, level) {
    const exercises = [];

    switch (topic) {
      case 'yijing_basics':
        exercises.push(...this.generateYijingBasicExercises(level));
        break;
      case 'hexagram_interpretation':
        exercises.push(...this.generateHexagramExercises(level));
        break;
      case 'bazi_fundamentals':
        exercises.push(...this.generateBaziFundamentalExercises(level));
        break;
      case 'bazi_analysis':
        exercises.push(...this.generateBaziAnalysisExercises(level));
        break;
      case 'combined_analysis':
        exercises.push(...this.generateCombinedAnalysisExercises(level));
        break;
      default:
        exercises.push(...this.generateGeneralExercises(topic, level));
    }

    return exercises.map((exercise, index) => ({
      id: index + 1,
      ...exercise,
      difficulty: this.assessExerciseDifficulty(exercise, level),
      estimated_time: this.estimateExerciseTime(exercise, level)
    }));
  }

  /**
   * 获取相关资源
   * @param {string} topic - 主题
   * @param {string} level - 级别
   * @returns {Object} 相关资源
   */
  async getRelatedResources(topic, level) {
    return {
      books: await this.getRecommendedBooks(topic, level),
      articles: await this.getRecommendedArticles(topic, level),
      videos: await this.getRecommendedVideos(topic, level),
      online_courses: await this.getRecommendedCourses(topic, level),
      tools: await this.getRecommendedTools(topic, level),
      communities: await this.getRecommendedCommunities(topic, level),
      experts: await this.getRecommendedExperts(topic, level)
    };
  }

  /**
   * 生成学习评估
   * @param {string} topic - 主题
   * @param {string} level - 级别
   * @returns {Object} 学习评估
   */
  async generateLearningAssessment(topic, level) {
    return {
      knowledge_check: await this.generateKnowledgeCheck(topic, level),
      practical_assessment: await this.generatePracticalAssessment(topic, level),
      self_evaluation: await this.generateSelfEvaluation(topic, level),
      peer_review: await this.generatePeerReview(topic, level),
      expert_feedback: await this.generateExpertFeedback(topic, level)
    };
  }

  /**
   * 查找相似案例
   * @param {string} caseType - 案例类型
   * @param {Object} caseData - 案例数据
   * @returns {Array} 相似案例
   */
  async findSimilarCases(caseType, caseData) {
    // 使用搜索引擎查找相似案例
    const searchResults = await this.searchEngine.findSimilarCases(caseType, caseData);

    return searchResults.map(result => ({
      id: result.id,
      title: result.title,
      similarity_score: result.similarity_score,
      key_features: result.key_features,
      analysis_summary: result.analysis_summary,
      lessons_learned: result.lessons_learned
    }));
  }

  /**
   * 分析案例数据
   * @param {Object} caseData - 案例数据
   * @param {string} caseType - 案例类型
   * @param {string} analysisFocus - 分析焦点
   * @returns {Object} 案例分析
   */
  async analyzeCaseData(caseData, caseType, analysisFocus) {
    const analysis = {
      case_overview: this.generateCaseOverview(caseData, caseType),
      key_elements: this.identifyKeyElements(caseData, caseType),
      analysis_framework: this.selectAnalysisFramework(caseType, analysisFocus),
      detailed_analysis: await this.performDetailedAnalysis(caseData, caseType, analysisFocus),
      patterns_identified: this.identifyPatterns(caseData, caseType),
      unique_features: this.identifyUniqueFeatures(caseData, caseType),
      complexity_assessment: this.assessComplexity(caseData, caseType)
    };

    return analysis;
  }

  /**
   * 提取学习要点
   * @param {Object} caseAnalysis - 案例分析
   * @param {Array} similarCases - 相似案例
   * @returns {Array} 学习要点
   */
  async extractLearningPoints(caseAnalysis, similarCases) {
    const learningPoints = [];

    // 从案例分析中提取要点
    learningPoints.push(...this.extractFromAnalysis(caseAnalysis));

    // 从相似案例中提取要点
    learningPoints.push(...this.extractFromSimilarCases(similarCases));

    // 去重和优先级排序
    const uniquePoints = this.deduplicateLearningPoints(learningPoints);
    const prioritizedPoints = this.prioritizeLearningPoints(uniquePoints);

    return prioritizedPoints.map((point, index) => ({
      id: index + 1,
      category: point.category,
      description: point.description,
      importance: point.importance,
      application: point.application,
      examples: point.examples
    }));
  }

  /**
   * 生成对比分析
   * @param {Object} caseData - 案例数据
   * @param {Array} similarCases - 相似案例
   * @returns {Object} 对比分析
   */
  async generateComparativeAnalysis(caseData, similarCases) {
    return {
      similarities: this.identifySimilarities(caseData, similarCases),
      differences: this.identifyDifferences(caseData, similarCases),
      patterns: this.identifyCommonPatterns(caseData, similarCases),
      variations: this.identifyVariations(caseData, similarCases),
      trends: this.identifyTrends(caseData, similarCases),
      insights: this.generateComparativeInsights(caseData, similarCases)
    };
  }

  /**
   * 提取经验教训
   * @param {Object} caseAnalysis - 案例分析
   * @param {Object} comparativeAnalysis - 对比分析
   * @returns {Object} 经验教训
   */
  async extractLessonsLearned(caseAnalysis, comparativeAnalysis) {
    return {
      key_lessons: this.identifyKeyLessons(caseAnalysis, comparativeAnalysis),
      best_practices: this.identifyBestPractices(caseAnalysis, comparativeAnalysis),
      common_mistakes: this.identifyCommonMistakes(caseAnalysis, comparativeAnalysis),
      success_factors: this.identifySuccessFactors(caseAnalysis, comparativeAnalysis),
      failure_factors: this.identifyFailureFactors(caseAnalysis, comparativeAnalysis),
      improvement_opportunities: this.identifyImprovementOpportunities(caseAnalysis, comparativeAnalysis)
    };
  }

  /**
   * 生成应用指导
   * @param {Array} learningPoints - 学习要点
   * @param {string} studyPurpose - 研究目的
   * @returns {Object} 应用指导
   */
  async generateApplicationGuidance(learningPoints, studyPurpose) {
    return {
      practical_applications: this.generatePracticalApplications(learningPoints, studyPurpose),
      implementation_steps: this.generateImplementationSteps(learningPoints, studyPurpose),
      adaptation_guidelines: this.generateAdaptationGuidelines(learningPoints, studyPurpose),
      validation_methods: this.generateValidationMethods(learningPoints, studyPurpose),
      continuous_improvement: this.generateContinuousImprovement(learningPoints, studyPurpose)
    };
  }

  // 辅助方法（简化实现）
  async getBasicConcepts(topic, level) {
    const concepts = {
      'yijing_basics': {
        beginner: ['阴阳概念', '八卦基础', '六十四卦简介'],
        intermediate: ['卦象结构', '爻位意义', '变卦原理'],
        advanced: ['卦象组合', '爻辞解读', '象数理占'],
        expert: ['易理哲学', '象数体系', '义理体系']
      },
      'bazi_fundamentals': {
        beginner: ['天干地支', '五行基础', '阴阳属性'],
        intermediate: ['四柱结构', '十神概念', '大运流年'],
        advanced: ['格局分析', '用神忌神', '调候用神'],
        expert: ['高级格局', '特殊组合', '精微分析']
      }
    };

    return concepts[topic]?.[level] || ['基础概念1', '基础概念2', '基础概念3'];
  }

  async getTheoreticalFoundation(topic, level) {
    return {
      core_theories: ['核心理论1', '核心理论2'],
      philosophical_basis: ['哲学基础1', '哲学基础2'],
      methodological_framework: ['方法论框架1', '方法论框架2']
    };
  }

  async getPracticalApplications(topic, level) {
    return {
      application_areas: ['应用领域1', '应用领域2'],
      case_studies: ['案例研究1', '案例研究2'],
      practical_techniques: ['实用技巧1', '实用技巧2']
    };
  }

  async getHistoricalContext(topic, level) {
    return {
      historical_development: '历史发展脉络',
      key_figures: ['重要人物1', '重要人物2'],
      cultural_background: '文化背景介绍'
    };
  }

  async getModernInterpretations(topic, level) {
    return {
      contemporary_views: ['现代观点1', '现代观点2'],
      scientific_perspectives: ['科学视角1', '科学视角2'],
      practical_adaptations: ['实用改编1', '实用改编2']
    };
  }

  organizeVisualContent(content) {
    return {
      ...content,
      presentation_style: 'visual',
      visual_aids: ['图表', '示意图', '流程图'],
      interactive_elements: ['可视化工具', '交互式图表']
    };
  }

  organizeAuditoryContent(content) {
    return {
      ...content,
      presentation_style: 'auditory',
      audio_elements: ['讲解音频', '案例分析音频'],
      discussion_topics: ['讨论话题1', '讨论话题2']
    };
  }

  organizeKinestheticContent(content) {
    return {
      ...content,
      presentation_style: 'kinesthetic',
      hands_on_activities: ['实践活动1', '实践活动2'],
      experiential_learning: ['体验式学习1', '体验式学习2']
    };
  }

  organizeReadingContent(content) {
    return {
      ...content,
      presentation_style: 'reading',
      text_materials: ['阅读材料1', '阅读材料2'],
      study_guides: ['学习指南1', '学习指南2']
    };
  }

  organizeComprehensiveContent(content) {
    return {
      ...content,
      presentation_style: 'comprehensive',
      multi_modal_elements: ['多模态元素1', '多模态元素2'],
      integrated_approach: '综合学习方法'
    };
  }

  async getBaseLearningPath(topic, level) {
    return {
      overview: `${topic}的${level}级学习路径`,
      phases: [
        { name: '基础阶段', duration: '2-4周', objectives: ['掌握基本概念'] },
        { name: '进阶阶段', duration: '4-6周', objectives: ['理解核心原理'] },
        { name: '应用阶段', duration: '6-8周', objectives: ['实践应用技能'] }
      ],
      milestones: ['完成基础学习', '通过中期评估', '完成项目实践'],
      estimated_duration: '12-18周',
      prerequisites: ['基础知识要求'],
      success_criteria: ['评估标准1', '评估标准2']
    };
  }

  customizeLearningPath(basePath, focusAreas) {
    const customized = { ...basePath };

    // 根据关注领域调整学习路径
    if (focusAreas.length > 0) {
      customized.specialized_modules = focusAreas.map(area => ({
        area: area,
        additional_duration: '2-3周',
        specialized_objectives: [`掌握${area}专业知识`]
      }));
    }

    return customized;
  }

  generateYijingBasicExercises(level) {
    return [
      {
        title: '八卦识别练习',
        description: '识别和记忆八个基本卦象',
        type: 'recognition',
        materials: ['八卦图表', '练习卡片']
      },
      {
        title: '卦象组合练习',
        description: '练习上下卦的组合形成六十四卦',
        type: 'combination',
        materials: ['卦象组合表', '练习题目']
      }
    ];
  }

  generateHexagramExercises(level) {
    return [
      {
        title: '卦象解读练习',
        description: '练习解读具体卦象的含义',
        type: 'interpretation',
        materials: ['卦象案例', '解读指南']
      }
    ];
  }

  generateBaziFundamentalExercises(level) {
    return [
      {
        title: '天干地支记忆',
        description: '熟练掌握天干地支的顺序和属性',
        type: 'memorization',
        materials: ['天干地支表', '记忆卡片']
      }
    ];
  }

  generateBaziAnalysisExercises(level) {
    return [
      {
        title: '八字排盘练习',
        description: '练习根据出生时间排出八字',
        type: 'calculation',
        materials: ['万年历', '排盘工具']
      }
    ];
  }

  generateCombinedAnalysisExercises(level) {
    return [
      {
        title: '综合分析案例',
        description: '结合易经和八字进行综合分析',
        type: 'comprehensive',
        materials: ['综合案例', '分析框架']
      }
    ];
  }

  generateGeneralExercises(topic, level) {
    return [
      {
        title: '通用练习',
        description: `${topic}的通用练习`,
        type: 'general',
        materials: ['练习材料']
      }
    ];
  }

  assessExerciseDifficulty(exercise, level) {
    const difficultyMap = {
      beginner: 'easy',
      intermediate: 'medium',
      advanced: 'hard',
      expert: 'very_hard'
    };
    return difficultyMap[level] || 'medium';
  }

  estimateExerciseTime(exercise, level) {
    const timeMap = {
      beginner: '30-60分钟',
      intermediate: '60-90分钟',
      advanced: '90-120分钟',
      expert: '120-180分钟'
    };
    return timeMap[level] || '60分钟';
  }

  async getRecommendedBooks(topic, level) {
    return [
      { title: '推荐书籍1', author: '作者1', level: level, rating: 4.5 },
      { title: '推荐书籍2', author: '作者2', level: level, rating: 4.3 }
    ];
  }

  async getRecommendedArticles(topic, level) {
    return [
      { title: '推荐文章1', source: '来源1', url: 'http://example.com/1' },
      { title: '推荐文章2', source: '来源2', url: 'http://example.com/2' }
    ];
  }

  async getRecommendedVideos(topic, level) {
    return [
      { title: '推荐视频1', platform: '平台1', duration: '30分钟' },
      { title: '推荐视频2', platform: '平台2', duration: '45分钟' }
    ];
  }

  async getRecommendedCourses(topic, level) {
    return [
      { title: '推荐课程1', provider: '提供方1', duration: '8周' },
      { title: '推荐课程2', provider: '提供方2', duration: '12周' }
    ];
  }

  async getRecommendedTools(topic, level) {
    return [
      { name: '推荐工具1', type: '软件工具', description: '工具描述1' },
      { name: '推荐工具2', type: '在线工具', description: '工具描述2' }
    ];
  }

  async getRecommendedCommunities(topic, level) {
    return [
      { name: '推荐社区1', platform: '平台1', members: '1000+' },
      { name: '推荐社区2', platform: '平台2', members: '500+' }
    ];
  }

  async getRecommendedExperts(topic, level) {
    return [
      { name: '专家1', expertise: '专业领域1', contact: '联系方式1' },
      { name: '专家2', expertise: '专业领域2', contact: '联系方式2' }
    ];
  }

  async generateKnowledgeCheck(topic, level) {
    return {
      questions: [
        { question: '问题1', type: 'multiple_choice', options: ['A', 'B', 'C', 'D'], answer: 'A' },
        { question: '问题2', type: 'true_false', answer: true },
        { question: '问题3', type: 'short_answer', sample_answer: '示例答案' }
      ],
      passing_score: 70,
      time_limit: '30分钟'
    };
  }

  async generatePracticalAssessment(topic, level) {
    return {
      tasks: [
        { task: '实践任务1', description: '任务描述1', criteria: '评估标准1' },
        { task: '实践任务2', description: '任务描述2', criteria: '评估标准2' }
      ],
      submission_format: '提交格式要求',
      evaluation_rubric: '评估量表'
    };
  }

  async generateSelfEvaluation(topic, level) {
    return {
      reflection_questions: [
        '你对这个主题的理解程度如何？',
        '你在学习过程中遇到了哪些挑战？',
        '你计划如何应用所学知识？'
      ],
      self_rating_scale: '1-10分自评量表',
      improvement_plan: '改进计划模板'
    };
  }

  async generatePeerReview(topic, level) {
    return {
      peer_review_guidelines: '同伴评议指南',
      review_criteria: '评议标准',
      feedback_template: '反馈模板'
    };
  }

  async generateExpertFeedback(topic, level) {
    return {
      expert_review_process: '专家评议流程',
      feedback_areas: ['知识掌握', '应用能力', '创新思维'],
      improvement_suggestions: '改进建议'
    };
  }

  generateProgressTracking(topic, level) {
    return {
      tracking_metrics: ['学习时间', '完成进度', '测试成绩'],
      milestone_checkpoints: ['25%', '50%', '75%', '100%'],
      progress_visualization: '进度可视化工具'
    };
  }

  generateNextSteps(topic, level, focusAreas) {
    return [
      '完成当前级别的所有练习',
      '参加相关的实践活动',
      '寻求专家指导和反馈',
      '考虑进入下一个学习级别'
    ];
  }

  generateResearchInsights(caseAnalysis, comparativeAnalysis) {
    return {
      theoretical_contributions: '理论贡献',
      practical_implications: '实践意义',
      future_research_directions: '未来研究方向'
    };
  }

  suggestFollowUpStudies(caseType, learningPoints) {
    return [
      '相关案例的深入研究',
      '不同方法的对比研究',
      '长期跟踪研究'
    ];
  }

  // 更多辅助方法的简化实现...
  generateCaseOverview(caseData, caseType) {
    return {
      case_id: caseData.id || 'unknown',
      case_type: caseType,
      summary: '案例概述',
      key_characteristics: ['特征1', '特征2']
    };
  }

  identifyKeyElements(caseData, caseType) {
    return ['关键要素1', '关键要素2', '关键要素3'];
  }

  selectAnalysisFramework(caseType, analysisFocus) {
    return {
      framework_name: '分析框架名称',
      methodology: '分析方法',
      evaluation_criteria: '评估标准'
    };
  }

  async performDetailedAnalysis(caseData, caseType, analysisFocus) {
    return {
      structural_analysis: '结构分析',
      functional_analysis: '功能分析',
      contextual_analysis: '背景分析'
    };
  }

  identifyPatterns(caseData, caseType) {
    return ['模式1', '模式2', '模式3'];
  }

  identifyUniqueFeatures(caseData, caseType) {
    return ['独特特征1', '独特特征2'];
  }

  assessComplexity(caseData, caseType) {
    return {
      complexity_level: 'medium',
      complexity_factors: ['因素1', '因素2'],
      analysis_difficulty: 'moderate'
    };
  }

  /**
   * 根据知识体系获取关注领域
   * @param {string} system - 知识体系
   * @returns {Array} 关注领域
   */
  getFocusAreasBySystem(system) {
    const systemFocusMap = {
      'yijing': ['hexagram_interpretation', 'divination_methods', 'philosophical_concepts'],
      'bazi': ['four_pillars', 'five_elements', 'ten_gods', 'luck_cycles'],
      'both': ['integrated_analysis', 'comparative_methods', 'practical_applications']
    };
    return systemFocusMap[system] || ['general_knowledge'];
  }

  /**
   * 根据格式获取学习风格
   * @param {string} format - 学习内容格式
   * @returns {string} 学习风格
   */
  getLearningStyleByFormat(format) {
    const formatStyleMap = {
      'text': 'reading',
      'interactive': 'kinesthetic',
      'visual': 'visual'
    };
    return formatStyleMap[format] || 'comprehensive';
  }

  /**
   * 根据ID获取案例
   * @param {string} caseId - 案例ID
   * @returns {Object} 案例数据
   */
  async getCaseById(caseId) {
    // 模拟从数据库获取案例
    return {
      id: caseId,
      title: `案例 ${caseId}`,
      description: '案例描述',
      data: {
        birth_time: '1990-05-15T10:30:00+08:00',
        gender: 'male',
        analysis_results: {}
      },
      category: 'historical',
      tags: ['career', 'personality']
    };
  }

  /**
   * 获取案例列表
   * @param {string} system - 案例类型
   * @param {string} category - 案例分类
   * @param {Array} analysisFocus - 分析重点
   * @returns {Object} 案例列表
   */
  async getCasesList(system, category, analysisFocus) {
    return {
      timestamp: new Date().toISOString(),
      system: system,
      category: category,
      analysis_focus: analysisFocus,
      total_cases: 50,
      cases: [
        {
          id: 'case_001',
          title: '历史名人案例1',
          category: '历史人物',
          system: system,
          tags: analysisFocus,
          difficulty: 'intermediate',
          description: '这是一个关于历史名人的八字分析案例'
        },
        {
          id: 'case_002',
          title: '现代企业家案例',
          category: '现代案例',
          system: system,
          tags: analysisFocus,
          difficulty: 'advanced',
          description: '这是一个关于现代企业家的综合分析案例'
        },
        {
          id: 'case_003',
          title: '学者案例研究',
          category: '学术研究',
          system: system,
          tags: analysisFocus,
          difficulty: 'expert',
          description: '这是一个深入的学术研究案例'
        }
      ],
      recommended_order: ['case_001', 'case_002', 'case_003'],
      study_guidelines: {
        preparation: '案例学习前的准备工作',
        methodology: '推荐的学习方法',
        evaluation: '学习效果评估标准'
      }
    };
  }
}

module.exports = KnowledgeEngine;