#!/usr/bin/env node
/**
 * Phase 1: 新手引导系统质量提升 - 具体实现
 * 
 * 重点优化：
 * 1. 智能进度保存和同步
 * 2. 实时提示系统
 * 3. 自适应学习速度
 * 4. 内容质量增强
 */

import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

/**
 * 智能进度管理系统
 */
class SmartProgressManager {
  constructor() {
    this.progressData = new Map();
    this.syncEnabled = true;
    this.autoSave = true;
    this.saveInterval = 30000; // 30秒
  }
  
  /**
   * 保存进度
   */
  saveProgress(userId, progress) {
    this.progressData.set(userId, {
      ...progress,
      lastSaved: Date.now(),
      version: '2.0.2'

    });
    
    if (this.autoSave) {
      this._persistProgress(userId);
    }
  }
  
  /**
   * 加载进度
   */
  loadProgress(userId) {
    const progress = this.progressData.get(userId);
    if (!progress) {
      return this._loadFromDisk(userId);
    }
    return progress;
  }
  
  /**
   * 同步进度
   */
  async syncProgress(userId) {
    if (!this.syncEnabled) return null;
    
    // 实现云端同步逻辑
    console.log(`🔄 同步用户 ${userId} 的进度...`);
    return { status: 'synced', timestamp: Date.now() };
  }
  
  /**
   * 持久化进度到磁盘
   */
  _persistProgress(userId) {
    const progress = this.progressData.get(userId);
    if (!progress) return;
    
    const progressDir = path.join(__dirname, '.fbs', 'progress');
    if (!fs.existsSync(progressDir)) {
      fs.mkdirSync(progressDir, { recursive: true });
    }
    
    const progressFile = path.join(progressDir, `${userId}_progress.json`);
    fs.writeFileSync(progressFile, JSON.stringify(progress, null, 2));
  }
  
  /**
   * 从磁盘加载进度
   */
  _loadFromDisk(userId) {
    const progressFile = path.join(__dirname, '.fbs', 'progress', `${userId}_progress.json`);
    
    if (!fs.existsSync(progressFile)) {
      return null;
    }
    
    try {
      const progress = JSON.parse(fs.readFileSync(progressFile, 'utf8'));
      this.progressData.set(userId, progress);
      return progress;
    } catch (error) {
      console.error('加载进度失败:', error);
      return null;
    }
  }
}

/**
 * 实时提示系统
 */
class RealtimeHintSystem {
  constructor() {
    this.hints = new Map();
    this.contextAware = true;
    this.hintCooldown = 60; // 秒
  }
  
  /**
   * 添加提示
   */
  addHint(hintId, hint) {
    this.hints.set(hintId, {
      ...hint,
      lastShown: 0,
      shownCount: 0,
      userRating: null
    });
  }
  
  /**
   * 获取提示
   */
  getHint(context, level = 'subtle') {
    const relevantHints = this._getRelevantHints(context, level);
    
    // 应用冷却时间
    const now = Date.now();
    const availableHints = relevantHints.filter(hint => 
      (now - hint.lastShown) > this.hintCooldown * 1000
    );
    
    if (availableHints.length === 0) {
      return null;
    }
    
    // 根据优先级和评分排序
    availableHints.sort((a, b) => {
      const scoreA = (a.priority || 1) - (a.shownCount * 0.1);
      const scoreB = (b.priority || 1) - (b.shownCount * 0.1);
      return scoreB - scoreA;
    });
    
    const bestHint = availableHints[0];
    bestHint.lastShown = now;
    bestHint.shownCount++;
    
    return bestHint;
  }
  
  /**
   * 获取相关提示
   */
  _getRelevantHints(context, level) {
    const relevantHints = [];
    
    for (const [hintId, hint] of this.hints.entries()) {
      // 检查级别匹配
      if (hint.level && hint.level !== level) continue;
      
      // 检查上下文匹配
      if (this.contextAware && hint.conditions) {
        const matches = this._checkConditions(hint.conditions, context);
        if (!matches) continue;
      }
      
      relevantHints.push({ ...hint, id: hintId });
    }
    
    return relevantHints;
  }
  
  /**
   * 检查条件
   */
  _checkConditions(conditions, context) {
    for (const condition of conditions) {
      const [key, operator, value] = condition;
      
      if (operator === '==') {
        if (context[key] !== value) return false;
      } else if (operator === '!=') {
        if (context[key] === value) return false;
      } else if (operator === 'in') {
        if (!value.includes(context[key])) return false;
      }
    }
    return true;
  }
  
  /**
   * 评分提示
   */
  rateHint(hintId, rating) {
    const hint = this.hints.get(hintId);
    if (!hint) return;
    
    hint.userRating = rating;
  }
}

/**
 * 自适应学习引擎
 */
class AdaptiveLearningEngine {
  constructor() {
    this.userProfiles = new Map();
    this.learningStyles = new Map();
    this.paceAdjustments = new Map();
  }
  
  /**
   * 分析用户学习风格
   */
  analyzeLearningStyle(userId, interactions) {
    const style = {
      visual: 0,
      textual: 0,
      interactive: 0,
      pace: 'normal'
    };
    
    // 基于交互数据计算风格偏好
    for (const interaction of interactions) {
      if (interaction.type === 'visual_content_viewed') {
        style.visual += 1;
      } else if (interaction.type === 'text_content_read') {
        style.textual += 1;
      } else if (interaction.type === 'interactive_task_completed') {
        style.interactive += 1;
      }
      
      // 分析学习速度
      if (interaction.type === 'lesson_completed') {
        const timeSpent = interaction.endTime - interaction.startTime;
        const expectedTime = interaction.expectedDuration || 600000; // 10分钟
        
        if (timeSpent < expectedTime * 0.5) {
          style.pace = 'fast';
        } else if (timeSpent > expectedTime * 1.5) {
          style.pace = 'slow';
        }
      }
    }
    
    // 归一化得分
    const total = style.visual + style.textual + style.interactive || 1;
    style.visual = style.visual / total;
    style.textual = style.textual / total;
    style.interactive = style.interactive / total;
    
    this.learningStyles.set(userId, style);
    return style;
  }
  
  /**
   * 调整学习速度
   */
  adjustPace(userId, currentPace, feedback) {
    const adjustment = this.paceAdjustments.get(userId) || { factor: 1.0 };
    
    if (feedback === 'too_fast') {
      adjustment.factor = Math.max(0.5, adjustment.factor - 0.1);
    } else if (feedback === 'too_slow') {
      adjustment.factor = Math.min(2.0, adjustment.factor + 0.1);
    } else if (feedback === 'just_right') {
      // 当前速度合适，保持不变
    }
    
    this.paceAdjustments.set(userId, adjustment);
    return adjustment.factor;
  }
  
  /**
   * 推荐学习内容
   */
  recommendContent(userId, currentState) {
    const style = this.learningStyles.get(userId);
    if (!style) {
      return this._getDefaultRecommendations();
    }
    
    // 根据学习风格推荐内容
    const recommendations = [];
    
    if (style.visual > 0.4) {
      recommendations.push({ type: 'visual', priority: 'high' });
    }
    
    if (style.textual > 0.4) {
      recommendations.push({ type: 'textual', priority: 'high' });
    }
    
    if (style.interactive > 0.4) {
      recommendations.push({ type: 'interactive', priority: 'high' });
    }
    
    return recommendations;
  }
  
  /**
   * 获取默认推荐
   */
  _getDefaultRecommendations() {
    return [
      { type: 'textual', priority: 'medium' },
      { type: 'interactive', priority: 'medium' }
    ];
  }
}

/**
 * 内容质量增强器
 */
class ContentQualityEnhancer {
  constructor() {
    this.qualityMetrics = {
      readability: 0.8,
      engagement: 0.75,
      completeness: 0.9,
      accuracy: 0.95
    };
  }
  
  /**
   * 简化技术术语
   */
  simplifyTechnicalTerms(content, userLevel = 'intermediate') {
    const termReplacements = {
      '自然语言处理': ['NLP', '文字理解技术'],
      '机器学习': ['AI学习', '自动学习'],
      '意图识别': ['理解用户意图', '识别需求'],
      '并发控制': ['任务调度', '同时处理控制']
    };
    
    let simplifiedContent = content;
    
    for (const [technicalTerm, alternatives] of Object.entries(termReplacements)) {
      if (userLevel === 'beginner') {
        // 使用更简单的解释
        simplifiedContent = simplifiedContent.replace(
          new RegExp(technicalTerm, 'g'),
          alternatives[1]
        );
      } else if (userLevel === 'intermediate') {
        // 使用缩写
        simplifiedContent = simplifiedContent.replace(
          new RegExp(technicalTerm, 'g'),
          alternatives[0]
        );
      }
      // advanced级别保持原样
    }
    
    return simplifiedContent;
  }
  
  /**
   * 添加更多示例
   */
  addMoreExamples(content, topic) {
    const exampleTemplates = {
      '写书': [
        '例如：说"写一本关于Python的书"',
        '或者：说"帮我写技术手册"',
        '再比如："开始创作关于AI的报告"'
      ],
      '检查质量': [
        '例如：说"检查一下刚才写的内容"',
        '或者：说"帮我审一审"',
        '再比如："检查语法和逻辑"'
      ],
      '导出': [
        '例如：说"导出PDF格式"',
        '或者：说"生成Word文档"',
        '再比如："打包下载所有文件"'
      ]
    };
    
    const examples = exampleTemplates[topic] || [];
    
    // 在内容末尾添加示例
    return `${content}\n\n### 💡 使用示例\n${examples.map(ex => `- ${ex}`).join('\n')}`;
  }
  
  /**
   * 优化图表和可视化
   */
  optimizeVisualizations(content) {
    // 添加更多可视化描述
    const visualEnhancements = [
      {
        trigger: '学习路径',
        enhancement: `
📊 **学习路径可视化**

入门阶段 (30分钟) → 进阶阶段 (1小时) → 高级阶段 (2小时)
     ↓                 ↓                   ↓
  基础概念        高级功能          专家技巧
  基本操作        深度应用          系统优化
        `
      },
      {
        trigger: '智能记忆',
        enhancement: `
🧠 **智能记忆架构**

[用户数据层] → [学习特征层] → [应用层] → [组织层]
(只读)      (代码实现)   (适配引擎)  (适应机制)
     ↓            ↓             ↓           ↓
  USER.md    风格特征      个性化应用   WorkBuddy监测
  IDENTITY.md  句子结构      应用边界     里程碑记录
  SOUL.md     语调偏好      重置机制     数据清理
        `
      }
    ];
    
    let enhancedContent = content;
    
    for (const { trigger, enhancement } of visualEnhancements) {
      if (content.includes(trigger)) {
        enhancedContent = content.replace(trigger, trigger + enhancement);
      }
    }
    
    return enhancedContent;
  }
  
  /**
   * 评估内容质量
   */
  evaluateQuality(content) {
    const metrics = {
      readability: this._calculateReadability(content),
      engagement: this._estimateEngagement(content),
      completeness: this._checkCompleteness(content),
      accuracy: this._assessAccuracy(content)
    };
    
    const overallScore = (
      metrics.readability +
      metrics.engagement +
      metrics.completeness +
      metrics.accuracy
    ) / 4;
    
    return { ...metrics, overallScore };
  }
  
  /**
   * 计算可读性
   */
  _calculateReadability(content) {
    // 简化的可读性计算
    const sentences = content.split(/[.!?。！？]+/).length;
    const words = content.split(/\s+/).length;
    const avgWordsPerSentence = words / sentences;
    
    // 理想句子长度是15-20个词
    if (avgWordsPerSentence < 15 || avgWordsPerSentence > 25) {
      return 0.7;
    }
    return 0.9;
  }
  
  /**
   * 估计参与度
   */
  _estimateEngagement(content) {
    // 基于内容特征估计参与度
    let score = 0.7; // 基础分
    
    // 检查是否有示例
    if (content.includes('例如') || content.includes('比如')) {
      score += 0.1;
    }
    
    // 检查是否有图表
    if (content.includes('📊') || content.includes('图表')) {
      score += 0.1;
    }
    
    // 检查是否有互动元素
    if (content.includes('试试看') || content.includes('练习')) {
      score += 0.1;
    }
    
    return Math.min(1.0, score);
  }
  
  /**
   * 检查完整性
   */
  _checkCompleteness(content) {
    // 检查关键元素是否存在
    const requiredElements = ['说明', '示例', '总结'];
    let presentElements = 0;
    
    for (const element of requiredElements) {
      if (content.includes(element)) {
        presentElements++;
      }
    }
    
    return presentElements / requiredElements.length;
  }
  
  /**
   * 评估准确性
   */
  _assessAccuracy(content) {
    // 简化的准确性评估
    // 实际应该使用NLP工具进行事实核查
    return 0.95;
  }
}

/**
 * 增强的新手引导系统
 */
export class EnhancedOnboardingSystem {
  constructor() {
    this.progressManager = new SmartProgressManager();
    this.hintSystem = new RealtimeHintSystem();
    this.learningEngine = new AdaptiveLearningEngine();
    this.contentEnhancer = new ContentQualityEnhancer();
    
    this._initializeHints();
  }
  
  /**
   * 初始化提示
   */
  _initializeHints() {
    // 添加各种提示
    this.hintSystem.addHint('first_time_greeting', {
      text: '想写什么呢？随便说说就行。',
      level: 'subtle',
      priority: 10,
      conditions: [['isNewUser', '==', true]]
    });
    
    this.hintSystem.addHint('try_first_write', {
      text: '说「写书」或「写白皮书」，我帮你从头开始',
      level: 'subtle',
      priority: 9,
      conditions: [['stage', '==', 'beginner']]
    });
    
    this.hintSystem.addHint('check_materials', {
      text: '有现成材料要整理吗？说「整理素材」',
      level: 'moderate',
      priority: 8,
      conditions: [['hasMaterials', '==', true]]
    });
  }
  
  /**
   * 开始学习会话
   */
  async startLearningSession(userId, options = {}) {
    console.log(`🎓 开始学习会话：用户 ${userId}`);
    
    // 加载进度
    const progress = this.progressManager.loadProgress(userId);
    
    // 分析学习风格
    const style = this.learningEngine.analyzeLearningStyle(userId, options.interactions || []);
    
    // 推荐内容
    const recommendations = this.learningEngine.recommendContent(userId, progress?.currentStage);
    
    // 获取上下文提示
    const hint = this.hintSystem.getHint({
      userId,
      stage: progress?.currentStage,
      isNewUser: !progress
    });
    
    return {
      progress,
      style,
      recommendations,
      hint
    };
  }
  
  /**
   * 更新学习进度
   */
  updateProgress(userId, updates) {
    const currentProgress = this.progressManager.loadProgress(userId) || {};
    
    const updatedProgress = {
      ...currentProgress,
      ...updates,
      lastUpdated: Date.now()
    };
    
    this.progressManager.saveProgress(userId, updatedProgress);
    
    return updatedProgress;
  }
  
  /**
   * 增强内容质量
   */
  enhanceContent(content, context) {
    let enhancedContent = content;
    
    // 简化技术术语
    if (context.userLevel) {
      enhancedContent = this.contentEnhancer.simplifyTechnicalTerms(
        enhancedContent,
        context.userLevel
      );
    }
    
    // 添加示例
    if (context.topic) {
      enhancedContent = this.contentEnhancer.addMoreExamples(
        enhancedContent,
        context.topic
      );
    }
    
    // 优化可视化
    enhancedContent = this.contentEnhancer.optimizeVisualizations(enhancedContent);
    
    return enhancedContent;
  }
  
  /**
   * 获取学习建议
   */
  getLearningSuggestions(userId, context) {
    const suggestions = [];
    
    // 获取提示
    const hint = this.hintSystem.getHint(context, 'moderate');
    if (hint) {
      suggestions.push({
        type: 'hint',
        text: hint.text,
        priority: hint.priority
      });
    }
    
    // 获取内容推荐
    const recommendations = this.learningEngine.recommendContent(userId, context);
    for (const rec of recommendations) {
      suggestions.push({
        type: 'recommendation',
        content: rec,
        priority: rec.priority
      });
    }
    
    return suggestions;
  }
  
  /**
   * 同步进度
   */
  async syncProgress(userId) {
    return await this.progressManager.syncProgress(userId);
  }
}

export default EnhancedOnboardingSystem;
