/**
 * Soul创业派对 - 阅读页（标准流程版）
 * 开发: 卡若
 * 技术支持: 存客宝
 * 
 * 更新: 2026-02-04
 * - 引入权限管理器（chapterAccessManager）统一权限判断
 * - 引入阅读追踪器（readingTracker）记录阅读进度、时长、是否读完
 * - 使用状态机（accessState）规范权限流转
 * - 异常统一保守处理，避免误解锁
 */

import accessManager from '../../utils/chapterAccessManager'
import readingTracker from '../../utils/readingTracker'
const { parseScene } = require('../../utils/scene.js')

const app = getApp()

Page({
  data: {
    // 系统信息
    statusBarHeight: 44,
    navBarHeight: 88,
    
    // 章节信息
    sectionId: '',
    section: null,
    partTitle: '',
    chapterTitle: '',
    
    // 内容
    content: '',
    previewContent: '',
    contentParagraphs: [],
    previewParagraphs: [],
    loading: true,
    
    // 【新增】权限状态机（替代 canAccess）
    // unknown: 加载中 | free: 免费 | locked_not_login: 未登录 | locked_not_purchased: 未购买 | unlocked_purchased: 已购买 | error: 错误
    accessState: 'unknown',
    
    // 用户状态
    isLoggedIn: false,
    hasFullBook: false,
    canAccess: false, // 保留兼容性，从 accessState 派生
    purchasedCount: 0,
    
    // 阅读进度
    readingProgress: 0,
    showPaywall: false,
    
    // 上一篇/下一篇
    prevSection: null,
    nextSection: null,
    
    // 价格
    sectionPrice: 1,
    fullBookPrice: 9.9,
    totalSections: 62,
    
    // 弹窗
    showShareModal: false,
    showLoginModal: false,
    agreeProtocol: false,
    showPosterModal: false,
    isPaying: false,
    isGeneratingPoster: false,

    // 章节 mid（扫码/海报分享用，便于分享 path 带 mid）
    sectionMid: null,
    // 朋友圈分享文案：章节正文前文，用于 onShareTimeline 的 title（不折叠时显示）
    shareTimelineTitle: ''
  },

  async onLoad(options) {
    wx.showShareMenu({ withShareTimeline: true })
    // 支持 scene（扫码）、mid、id、ref
    const sceneStr = (options && options.scene) || ''
    const parsed = parseScene(sceneStr)
    const mid = options.mid ? parseInt(options.mid, 10) : (parsed.mid || app.globalData.initialSectionMid || 0)
    let id = options.id || parsed.id || app.globalData.initialSectionId
    const ref = options.ref || parsed.ref
    if (app.globalData.initialSectionMid) delete app.globalData.initialSectionMid
    if (app.globalData.initialSectionId) delete app.globalData.initialSectionId

    console.log("页面：",mid);

    // mid 有值但无 id 时，从 bookData 或 API 解析 id
    if (mid && !id) {
      const bookData = app.globalData.bookData || []
      const ch = bookData.find(c => c.mid == mid || (c.mid && Number(c.mid) === Number(mid)))
      if (ch?.id) {
        id = ch.id
      } else {
        try {
          const chRes = await app.request({ url: `/api/miniprogram/book/chapter/by-mid/${mid}`, silent: true })
          if (chRes && chRes.id) id = chRes.id
        } catch (e) {
          console.warn('[Read] by-mid 解析失败:', e)
        }
      }
    }

    if (!id) {
      wx.showToast({ title: '章节参数缺失', icon: 'none' })
      this.setData({ accessState: 'error', loading: false })
      return
    }

    this.setData({
      statusBarHeight: app.globalData.statusBarHeight,
      navBarHeight: app.globalData.navBarHeight,
      sectionId: id,
      sectionMid: mid || null,
      loading: true,
      accessState: 'unknown'
    })

    if (ref) {
      console.log('[Read] 检测到推荐码:', ref)
      wx.setStorageSync('referral_code', ref)
      app.handleReferralCode({ query: { ref } })
    }

    try {
      const config = await accessManager.fetchLatestConfig()
      this.setData({
        sectionPrice: config.prices?.section ?? 1,
        fullBookPrice: config.prices?.fullbook ?? 9.9
      })

      // 统一：先拉章节数据，用 isFree/price===0 判断免费
      const chapterRes = await app.request({ url: this._getChapterUrl({ id, mid }), silent: true })
      const accessState = await accessManager.determineAccessState(id, chapterRes)
      const canAccess = accessManager.canAccessFullContent(accessState)
      
      this.setData({
        accessState,
        canAccess,
        isLoggedIn: !!app.globalData.userInfo?.id,
        showPaywall: !canAccess
      })
      
      // 加载内容（复用已拉取的章节数据，避免二次请求）
      await this.loadContent(id, accessState, chapterRes)
      
      // 【标准流程】4. 如果有权限，初始化阅读追踪
      if (canAccess) {
        readingTracker.init(id)
      }
      
      // 5. 加载导航
      this.loadNavigation(id)
      
    } catch (e) {
      console.error('[Read] 初始化失败:', e)
      wx.showToast({ title: '加载失败，请重试', icon: 'none' })
      this.setData({ accessState: 'error', loading: false })
    } finally {
      this.setData({ loading: false })
    }
  },
  
  // 从后端加载免费章节配置
  onPageScroll(e) {
    // 只在有权限时追踪阅读进度
    if (!accessManager.canAccessFullContent(this.data.accessState)) {
      return
    }
    
    // 获取滚动信息并更新追踪器
    const query = wx.createSelectorQuery()
    query.select('.page').boundingClientRect()
    query.selectViewport().scrollOffset()
    query.exec((res) => {
      if (res[0] && res[1]) {
        const scrollInfo = {
          scrollTop: res[1].scrollTop,
          scrollHeight: res[0].height,
          clientHeight: res[1].height
        }
        
        // 计算进度条显示（用于 UI）
        const totalScrollable = scrollInfo.scrollHeight - scrollInfo.clientHeight
        const progress = totalScrollable > 0 
          ? Math.min((scrollInfo.scrollTop / totalScrollable) * 100, 100) 
          : 0
        this.setData({ readingProgress: progress })
        
        // 更新阅读追踪器（记录最大进度、判断是否读完）
        readingTracker.updateProgress(scrollInfo)
      }
    })
  },

  // 【重构】加载章节内容（专注于内容加载，权限判断已在 onLoad 中由 accessManager 完成）
  // prefetchedChapter：若已有章节数据（含 content）则复用，避免二次请求
  async loadContent(id, accessState, prefetchedChapter) {
    try {
      const sectionPrice = this.data.sectionPrice ?? 1
      let res = prefetchedChapter
      if (!res || !res.content) {
        res = await app.request({ url: this._getChapterUrl({ id }), silent: true })
      }
      const section = {
        id: res.id || id,
        title: res.sectionTitle || res.title || this.getSectionTitle(id),
        isFree: res.isFree === true || (res.price !== undefined && res.price === 0),
        price: res.price ?? sectionPrice
      }
      this.setData({ section })
      
      if (res && res.content) {
        const lines = res.content.split('\n').filter(line => line.trim())
        const previewCount = Math.ceil(lines.length * 0.2)
        const rawText = (res.content || '').replace(/<[^>]+>/g, '').replace(/#[^\n]*/g, '').replace(/\s+/g, ' ').trim()
        const shareTimelineTitle = rawText.length > 50 ? rawText.slice(0, 50) + '...' : rawText
        const updates = {
          content: res.content,
          contentParagraphs: lines,
          previewParagraphs: lines.slice(0, previewCount),
          partTitle: res.partTitle || '',
          chapterTitle: res.chapterTitle || '',
          shareTimelineTitle: shareTimelineTitle || (section?.title || '') || 'Soul创业派对 - 真实商业故事'
        }
        if (res.mid) updates.sectionMid = res.mid
        this.setData(updates)
        
        // 如果有权限，标记为已读
        if (accessManager.canAccessFullContent(accessState)) {
          app.markSectionAsRead(id)
        }
      }
    } catch (e) {
      console.error('[Read] 加载内容失败:', e)
      // 尝试从本地缓存加载
      const cacheKey = `chapter_${id}`
      try {
        const cached = wx.getStorageSync(cacheKey)
        if (cached && cached.content) {
          const lines = cached.content.split('\n').filter(line => line.trim())
          const previewCount = Math.ceil(lines.length * 0.2)
          const rawText = (cached.content || '').replace(/<[^>]+>/g, '').replace(/#[^\n]*/g, '').replace(/\s+/g, ' ').trim()
          const shareTimelineTitle = rawText.length > 50 ? rawText.slice(0, 50) + '...' : rawText
          this.setData({
            content: cached.content,
            contentParagraphs: lines,
            previewParagraphs: lines.slice(0, previewCount),
            shareTimelineTitle: shareTimelineTitle || 'Soul创业派对 - 真实商业故事'
          })
          console.log('[Read] 从本地缓存加载成功')
        }
      } catch (cacheErr) {
        console.warn('[Read] 本地缓存也失败:', cacheErr)
      }
      throw e
    }
  },

  // 获取章节信息
  getSectionInfo(id) {
    // 特殊章节
    if (id === 'preface') {
      return { id: 'preface', title: '为什么我每天早上6点在Soul开播?', isFree: true, price: 0 }
    }
    if (id === 'epilogue') {
      return { id: 'epilogue', title: '这本书的真实目的', isFree: true, price: 0 }
    }
    if (id.startsWith('appendix')) {
      const appendixTitles = {
        'appendix-1': 'Soul派对房精选对话',
        'appendix-2': '创业者自检清单',
        'appendix-3': '本书提到的工具和资源'
      }
      return { id, title: appendixTitles[id] || '附录', isFree: true, price: 0 }
    }
    
    // 普通章节
    return {
      id: id,
      title: this.getSectionTitle(id),
      isFree: id === '1.1',
      price: 1
    }
  },

  // 获取章节标题
  getSectionTitle(id) {
    const titles = {
      '1.1': '荷包：电动车出租的被动收入模式',
      '1.2': '老墨:资源整合高手的社交方法',
      '1.3': '笑声背后的MBTI',
      '1.4': '人性的三角结构：利益、情感、价值观',
      '1.5': '沟通差的问题：为什么你说的别人听不懂',
      '2.1': '相亲故事:你以为找的是人,实际是在找模式',
      '2.2': '找工作迷茫者:为什么简历解决不了人生',
      '2.3': '撸运费险:小钱困住大脑的真实心理',
      '2.4': '游戏上瘾的年轻人:不是游戏吸引他,是生活没吸引力',
      '2.5': '健康焦虑(我的糖尿病经历):疾病是人生的第一次清醒',
      '3.1': '3000万流水如何跑出来(退税模式解析)',
      '8.1': '流量杠杆:抖音、Soul、飞书',
      '9.14': '大健康私域：一个月150万的70后'
    }
    return titles[id] || `章节 ${id}`
  },

  // 根据 id/mid 构造章节接口路径（优先使用 mid）
  _getChapterUrl(params = {}) {
    const { id, mid } = params
    const finalMid = (mid !== undefined && mid !== null) ? mid : this.data.sectionMid
    if (finalMid) {
      return `/api/miniprogram/book/chapter/by-mid/${finalMid}`
    }
    const finalId = id || this.data.sectionId
    return `/api/miniprogram/book/chapter/${finalId}`
  },

  // 加载内容 - 三级降级方案：API → 本地缓存 → 备用API
  async loadContent(id) {
    const cacheKey = `chapter_${id}`
    
    // 1. 优先从API获取
    try {
      const res = await this.fetchChapterWithTimeout(id, 5000)
      if (res && res.content) {
        this.setChapterContent(res)
        // 成功后缓存到本地
        wx.setStorageSync(cacheKey, res)
        console.log('[Read] 从API加载成功:', id)
        return
      }
    } catch (e) {
      console.warn('[Read] API加载失败，尝试本地缓存:', e.message)
    }
    
    // 2. API失败，尝试从本地缓存读取
    try {
      const cached = wx.getStorageSync(cacheKey)
      if (cached && cached.content) {
        this.setChapterContent(cached)
        console.log('[Read] 从本地缓存加载成功:', id)
        // 后台静默刷新
        this.silentRefresh(id)
        return
      }
    } catch (e) {
      console.warn('[Read] 本地缓存读取失败')
    }
    
    // 3. 都失败，显示加载中并持续重试
    this.setData({
      contentParagraphs: ['章节内容加载中...', '正在尝试连接服务器，请稍候...'],
      previewParagraphs: ['章节内容加载中...']
    })
    
    // 延迟重试（最多3次）
    this.retryLoadContent(id, 3)
  },
  
  // 带超时的章节请求
  fetchChapterWithTimeout(id, timeout = 5000) {
    return new Promise((resolve, reject) => {
      const timer = setTimeout(() => {
        reject(new Error('请求超时'))
      }, timeout)
      
      app.request(this._getChapterUrl({ id }))
        .then(res => {
          clearTimeout(timer)
          resolve(res)
        })
        .catch(err => {
          clearTimeout(timer)
          reject(err)
        })
    })
  },
  
  // 设置章节内容
  setChapterContent(res) {
    const lines = res.content.split('\n').filter(line => line.trim())
    const previewCount = Math.ceil(lines.length * 0.2)
    const sectionPrice = this.data.sectionPrice ?? 1
    const sectionTitle = (res.sectionTitle || res.title || '').trim()
    const rawText = (res.content || '').replace(/<[^>]+>/g, '').replace(/#[^\n]*/g, '').replace(/\s+/g, ' ').trim()
    const shareTimelineTitle = rawText.length > 50 ? rawText.slice(0, 50) + '...' : (rawText || sectionTitle)
    this.setData({
      // 文章详情标题：只使用后端提供的 sectionTitle，不再拼接其他本地标题信息
      section: {
        id: res.id || this.data.sectionId,
        title: sectionTitle,
        isFree: res.isFree === true || (res.price !== undefined && res.price === 0),
        price: res.price ?? sectionPrice
      },
      content: res.content,
      previewContent: lines.slice(0, previewCount).join('\n'),
      contentParagraphs: lines,
      previewParagraphs: lines.slice(0, previewCount),
      partTitle: res.partTitle || '',
      chapterTitle: sectionTitle,
      shareTimelineTitle: shareTimelineTitle || 'Soul创业派对 - 真实商业故事'
    })
  },
  
  // 静默刷新（后台更新缓存）
  async silentRefresh(id) {
    try {
      const res = await this.fetchChapterWithTimeout(id, 10000)
      if (res && res.content) {
        wx.setStorageSync(`chapter_${id}`, res)
        console.log('[Read] 后台缓存更新成功:', id)
      }
    } catch (e) {
      // 静默失败不处理
    }
  },
  
  // 重试加载
  retryLoadContent(id, maxRetries, currentRetry = 0) {
    if (currentRetry >= maxRetries) {
      this.setData({
        contentParagraphs: ['内容加载失败', '请检查网络连接后下拉刷新重试'],
        previewParagraphs: ['内容加载失败']
      })
      return
    }
    
    setTimeout(async () => {
      try {
        const res = await this.fetchChapterWithTimeout(id, 8000)
        if (res && res.content) {
          this.setChapterContent(res)
          wx.setStorageSync(`chapter_${id}`, res)
          console.log('[Read] 重试成功:', id, '第', currentRetry + 1, '次')
          return
        }
      } catch (e) {
        console.warn('[Read] 重试失败，继续重试:', currentRetry + 1)
      }
      this.retryLoadContent(id, maxRetries, currentRetry + 1)
    }, 2000 * (currentRetry + 1))
  },


  // 加载导航：以后台章节真实 sort_order 为准
  async loadNavigation(id) {
    try {
      let rows = app.globalData.bookData || []
      if (!Array.isArray(rows) || rows.length === 0) {
        const res = await app.request({ url: '/api/miniprogram/book/all-chapters', silent: true })
        rows = (res && (res.data || res.chapters)) || []
        if (Array.isArray(rows) && rows.length > 0) {
          app.globalData.bookData = rows
        }
      }

      if (!Array.isArray(rows) || rows.length === 0) {
        this.setData({ prevSection: null, nextSection: null })
        return
      }

      const orderedSections = rows
        .slice()
        .sort((a, b) => {
          const sortA = a.sortOrder ?? a.sort_order ?? 999999
          const sortB = b.sortOrder ?? b.sort_order ?? 999999
          if (sortA !== sortB) return sortA - sortB
          const midA = a.mid ?? a.MID ?? 0
          const midB = b.mid ?? b.MID ?? 0
          if (midA !== midB) return midA - midB
          return String(a.id || '').localeCompare(String(b.id || ''))
        })
        .map((item) => ({
          id: item.id,
          mid: item.mid ?? item.MID ?? 0,
          title: item.sectionTitle || item.section_title || item.title || item.chapterTitle || this.getSectionTitle(item.id)
        }))

      const currentIndex = orderedSections.findIndex((item) => item.id === id)
      if (currentIndex === -1) {
        this.setData({ prevSection: null, nextSection: null })
        return
      }

      const prevSection = currentIndex > 0 ? orderedSections[currentIndex - 1] : null
      const nextSection = currentIndex < orderedSections.length - 1 ? orderedSections[currentIndex + 1] : null

      this.setData({ prevSection, nextSection })
    } catch (e) {
      console.error('[Read] 加载上下篇导航失败:', e)
      this.setData({ prevSection: null, nextSection: null })
    }
  },

  // 返回（从分享进入无栈时回首页）
  goBack() {
    getApp().goBackOrToHome()
  },

  // 分享弹窗
  showShare() {
    this.setData({ showShareModal: true })
  },

  closeShareModal() {
    this.setData({ showShareModal: false })
  },

  // 复制链接
  copyLink() {
    const userInfo = app.globalData.userInfo
    const referralCode = userInfo?.referralCode || ''
    const shareUrl = `https://soul.quwanzhi.com/read/${this.data.sectionId}${referralCode ? '?ref=' + referralCode : ''}`
    
    wx.setClipboardData({
      data: shareUrl,
      success: () => {
        wx.showToast({ title: '链接已复制', icon: 'success' })
        this.setData({ showShareModal: false })
      }
    })
  },

  // 复制分享文案（朋友圈风格）
  copyShareText() {
    const { section } = this.data
    
    const shareText = `🔥 刚看完这篇《${section?.title || 'Soul创业派对'}》，太上头了！

62个真实商业案例，每个都是从0到1的实战经验。私域运营、资源整合、商业变现，干货满满。

推荐给正在创业或想创业的朋友，搜"Soul创业派对"小程序就能看！

#创业派对 #私域运营 #商业案例`
    
    wx.setClipboardData({
      data: shareText,
      success: () => {
        wx.showToast({ title: '文案已复制', icon: 'success' })
      }
    })
  },

  // 分享到微信 - 自动带分享人ID；优先用 mid（扫码/海报闭环），无则用 id
  onShareAppMessage() {
    const { section, sectionId, sectionMid } = this.data
    const ref = app.getMyReferralCode()
    const q = sectionMid ? `mid=${sectionMid}` : `id=${sectionId}`
    const safeSectionTitle = this.getSafeShareText(section?.title || '')
    const shareTitle = safeSectionTitle
      ? `📚 ${safeSectionTitle.length > 20 ? safeSectionTitle.slice(0, 20) + '...' : safeSectionTitle}`
      : '📚 Soul创业派对 - 真实商业故事'
    return {
      title: shareTitle,
      path: ref ? `/pages/read/read?${q}&ref=${ref}` : `/pages/read/read?${q}`,
      imageUrl: '/assets/share-cover.png'
    }
  },

  // 分享到朋友圈：使用安全模板，避免正文敏感词触发平台风控提示
  onShareTimeline() {
    const { sectionId, sectionMid, shareTimelineTitle, section } = this.data
    const ref = app.getMyReferralCode()
    const q = sectionMid ? `mid=${sectionMid}` : `id=${sectionId}`
    const safeSectionTitle = this.getSafeShareText(section?.title || '')
    const safePreviewTitle = this.getSafeShareText(shareTimelineTitle || '')
    // 优先使用章节名，兜底使用预览文案；都为空时使用固定安全标题
    const baseTitle = safeSectionTitle || safePreviewTitle || 'Soul创业派对｜真实商业案例'
    const title = baseTitle.length > 32 ? `${baseTitle.slice(0, 32)}...` : baseTitle
    return { title, query: ref ? `${q}&ref=${ref}` : q }
  },

  // 清洗分享文案，规避高风险收益承诺类词汇，降低平台风控误判
  getSafeShareText(text = '') {
    let safeText = String(text || '').trim()
    if (!safeText) return ''

    // 统一替换常见风险词
    const riskyPatterns = [
      /90%\s*收益/gi,
      /百分之九十\s*收益/gi,
      /收益/gi,
      /锁定\s*\d+\s*天/gi,
      /锁定期/gi,
      /稳赚/gi,
      /保本/gi,
      /高回报/gi,
      /返利/gi,
      /理财/gi,
      /投资/gi
    ]
    riskyPatterns.forEach((pattern) => {
      safeText = safeText.replace(pattern, '')
    })

    // 去掉多余空白和标点残留
    safeText = safeText
      .replace(/[，。；、,:：\-\s]{2,}/g, ' ')
      .replace(/^[，。；、,:：\-\s]+|[，。；、,:：\-\s]+$/g, '')
      .trim()

    return safeText
  },

  // 显示登录弹窗（每次打开协议未勾选，符合审核要求）
  showLoginModal() {
    try {
      this.setData({ showLoginModal: true, agreeProtocol: false })
    } catch (e) {
      console.error('[Read] showLoginModal error:', e)
      this.setData({ showLoginModal: true })
    }
  },

  closeLoginModal() {
    this.setData({ showLoginModal: false })
  },

  toggleAgree() {
    this.setData({ agreeProtocol: !this.data.agreeProtocol })
  },

  openUserProtocol() {
    wx.navigateTo({ url: '/pages/agreement/agreement' })
  },

  openPrivacy() {
    wx.navigateTo({ url: '/pages/privacy/privacy' })
  },

  // 从服务端刷新购买状态，避免登录后误用旧数据导致误解锁
  // 【重构】微信登录（须先勾选同意协议，符合审核要求）
  async handleWechatLogin() {
    if (!this.data.agreeProtocol) {
      wx.showToast({ title: '请先阅读并同意用户协议和隐私政策', icon: 'none' })
      return
    }
    try {
      const result = await app.login()
      if (!result) return
      
      this.setData({ showLoginModal: false, agreeProtocol: false })
      await this.onLoginSuccess()
      wx.showToast({ title: '登录成功', icon: 'success' })
      
    } catch (e) {
      console.error('[Read] 登录失败:', e)
      wx.showToast({ title: '登录失败，请重试', icon: 'none' })
    }
  },

  // 【重构】手机号登录（标准流程）
  async handlePhoneLogin(e) {
    if (!e.detail.code) {
      return this.handleWechatLogin()
    }
    
    try {
      const result = await app.loginWithPhone(e.detail.code)
      if (!result) return
      
      this.setData({ showLoginModal: false })
      await this.onLoginSuccess()
      wx.showToast({ title: '登录成功', icon: 'success' })
      
    } catch (e) {
      console.error('[Read] 手机号登录失败:', e)
      wx.showToast({ title: '登录失败', icon: 'none' })
    }
  },

  // 【新增】登录成功后的标准处理流程
  async onLoginSuccess() {
    wx.showLoading({ title: '更新状态中...', mask: true })
    
    try {
      // 1. 刷新用户购买状态（从 orders 表拉取最新）
      await accessManager.refreshUserPurchaseStatus()
      
      // 2. 重新拉取章节数据，用 isFree/price 判断免费
      const chapterRes = await app.request({
        url: this._getChapterUrl({}),
        silent: true
      })
      const newAccessState = await accessManager.determineAccessState(
        this.data.sectionId,
        chapterRes
      )
      const canAccess = accessManager.canAccessFullContent(newAccessState)
      
      this.setData({
        accessState: newAccessState,
        canAccess,
        isLoggedIn: true,
        showPaywall: !canAccess
      })
      
      // 3. 如果已解锁，重新加载内容并初始化阅读追踪
      if (canAccess) {
        await this.loadContent(this.data.sectionId, newAccessState, chapterRes)
        readingTracker.init(this.data.sectionId)
      }
      
      wx.hideLoading()
      
    } catch (e) {
      wx.hideLoading()
      console.error('[Read] 登录后更新状态失败:', e)
      wx.showToast({ title: '状态更新失败，请重试', icon: 'none' })
    }
  },

  // 购买章节 - 直接调起支付
  async handlePurchaseSection() {
    console.log('[Pay] 点击购买章节按钮')
    wx.showLoading({ title: '处理中...', mask: true })
    
    if (!this.data.isLoggedIn) {
      wx.hideLoading()
      console.log('[Pay] 用户未登录，显示登录弹窗')
      this.setData({ showLoginModal: true })
      return
    }
    
    const price = this.data.section?.price || 1
    console.log('[Pay] 开始支付流程:', { sectionId: this.data.sectionId, price })
    wx.hideLoading()
    await this.processPayment('section', this.data.sectionId, price)
  },

  // 购买全书 - 直接调起支付
  async handlePurchaseFullBook() {
    console.log('[Pay] 点击购买全书按钮')
    wx.showLoading({ title: '处理中...', mask: true })
    
    if (!this.data.isLoggedIn) {
      wx.hideLoading()
      console.log('[Pay] 用户未登录，显示登录弹窗')
      this.setData({ showLoginModal: true })
      return
    }
    
    console.log('[Pay] 开始支付流程: 全书', { price: this.data.fullBookPrice })
    wx.hideLoading()
    await this.processPayment('fullbook', null, this.data.fullBookPrice)
  },

  // 处理支付 - 调用真实微信支付接口
  async processPayment(type, sectionId, amount) {
    console.log('[Pay] processPayment开始:', { type, sectionId, amount })
    
    // 检查金额是否有效
    if (!amount || amount <= 0) {
      console.error('[Pay] 金额无效:', amount)
      wx.showToast({ title: '价格信息错误', icon: 'none' })
      return
    }
    
    // ✅ 从服务器查询是否已购买（基于 orders 表）
    try {
      wx.showLoading({ title: '检查购买状态...', mask: true })
      const userId = app.globalData.userInfo?.id
      
      if (userId) {
        const checkRes = await app.request(`/api/miniprogram/user/purchase-status?userId=${userId}`)
        
        if (checkRes.success && checkRes.data) {
          // 更新本地购买状态
          app.globalData.hasFullBook = checkRes.data.hasFullBook
          app.globalData.purchasedSections = checkRes.data.purchasedSections || []
          
          // 检查是否已购买
          if (type === 'section' && sectionId) {
            if (checkRes.data.purchasedSections.includes(sectionId)) {
              wx.hideLoading()
              wx.showToast({ title: '已购买过此章节', icon: 'none' })
              return
            }
          }
          
          if (type === 'fullbook' && checkRes.data.hasFullBook) {
            wx.hideLoading()
            wx.showToast({ title: '已购买全书', icon: 'none' })
            return
          }
        }
      }
    } catch (e) {
      console.warn('[Pay] 查询购买状态失败，继续支付流程:', e)
      // 查询失败不影响支付
    }
    
    this.setData({ isPaying: true })
    wx.showLoading({ title: '正在发起支付...', mask: true })
    
    try {
      // 1. 先获取openId (支付必需)
      let openId = app.globalData.openId || wx.getStorageSync('openId')
      
      if (!openId) {
        console.log('[Pay] 需要先获取openId，尝试静默获取')
        wx.showLoading({ title: '获取支付凭证...', mask: true })
        openId = await app.getOpenId()
        
        if (!openId) {
          // openId获取失败，但已登录用户可以使用用户ID替代
          if (app.globalData.isLoggedIn && app.globalData.userInfo?.id) {
            console.log('[Pay] 使用用户ID作为替代')
            openId = app.globalData.userInfo.id
          } else {
            wx.hideLoading()
            wx.showModal({
              title: '提示',
              content: '需要登录后才能支付，请先登录',
              showCancel: false
            })
            this.setData({ showLoginModal: true, isPaying: false })
            return
          }
        }
      }
      
      console.log('[Pay] 开始创建订单:', { type, sectionId, amount, openId: openId.slice(0, 10) + '...' })
      wx.showLoading({ title: '创建订单中...', mask: true })
      
      // 2. 调用后端创建预支付订单
      let paymentData = null
      
      try {
        // 获取章节完整名称用于支付描述
        const sectionTitle = this.data.section?.title || sectionId
        const description = type === 'fullbook' 
          ? '《一场Soul的创业实验》全书' 
          : `章节${sectionId}-${sectionTitle.length > 20 ? sectionTitle.slice(0, 20) + '...' : sectionTitle}`
        
        // 邀请码：谁邀请了我（从落地页 ref 或 storage 带入），会写入订单 referrer_id / referral_code 便于分销与对账
        const referralCode = wx.getStorageSync('referral_code') || ''
        const res = await app.request('/api/miniprogram/pay', {
          method: 'POST',
          data: {
            openId,
            productType: type,
            productId: sectionId,
            amount,
            description,
            userId: app.globalData.userInfo?.id || '',
            referralCode: referralCode || undefined
          }
        })
        
        console.log('[Pay] 创建订单响应:', res)
        
        if (res.success && res.data?.payParams) {
          paymentData = res.data.payParams
          paymentData._orderSn = res.data.orderSn // 保存订单号，支付成功后用于主动同步
          console.log('[Pay] 获取支付参数成功:', paymentData)
        } else {
          throw new Error(res.error || res.message || '创建订单失败')
        }
      } catch (apiError) {
        console.error('[Pay] API创建订单失败:', apiError)
        wx.hideLoading()
        // 支付接口失败时，显示客服联系方式
        wx.showModal({
          title: '支付通道维护中',
          content: '微信支付正在审核中，请添加客服微信（28533368）手动购买，感谢理解！',
          confirmText: '复制微信号',
          cancelText: '稍后再说',
          success: (res) => {
            if (res.confirm) {
              wx.setClipboardData({
                data: '28533368',
                success: () => {
                  wx.showToast({ title: '微信号已复制', icon: 'success' })
                }
              })
            }
          }
        })
        this.setData({ isPaying: false })
        return
      }
      
      // 3. 调用微信支付
      wx.hideLoading()
      console.log('[Pay] 调起微信支付, paymentData:', paymentData)
      
      try {
        await this.callWechatPay(paymentData)
        
        // 4. 【关键】主动向微信查询订单状态并同步到本地（不依赖回调，解决订单一直 created 的问题）
        const orderSn = paymentData._orderSn || paymentData.orderSn
        if (orderSn) {
          try {
            await app.request(`/api/miniprogram/pay?orderSn=${encodeURIComponent(orderSn)}`, { silent: true })
            console.log('[Pay] 已主动同步订单状态:', orderSn)
          } catch (e) {
            console.warn('[Pay] 主动同步订单失败，继续刷新购买状态:', e)
          }
        }
        
        // 5. 【标准流程】刷新权限并解锁内容
        console.log('[Pay] 微信支付成功!')
        await this.onPaymentSuccess()
        
      } catch (payErr) {
        console.error('[Pay] 微信支付调起失败:', payErr)
        if (payErr.errMsg && payErr.errMsg.includes('cancel')) {
          wx.showToast({ title: '已取消支付', icon: 'none' })
        } else if (payErr.errMsg && payErr.errMsg.includes('requestPayment:fail')) {
          // 支付失败，可能是参数错误或权限问题
          wx.showModal({
            title: '支付失败',
            content: '微信支付暂不可用，请添加客服微信（28533368）手动购买',
            confirmText: '复制微信号',
            cancelText: '取消',
            success: (res) => {
              if (res.confirm) {
                wx.setClipboardData({
                  data: '28533368',
                  success: () => wx.showToast({ title: '微信号已复制', icon: 'success' })
                })
              }
            }
          })
        } else {
          wx.showToast({ title: payErr.errMsg || '支付失败', icon: 'none' })
        }
      }
      
    } catch (e) {
      console.error('[Pay] 支付流程异常:', e)
      wx.hideLoading()
      wx.showToast({ title: '支付出错，请重试', icon: 'none' })
    } finally {
      this.setData({ isPaying: false })
    }
  },

  // 【新增】支付成功后的标准处理流程
  async onPaymentSuccess() {
    wx.showLoading({ title: '确认购买中...', mask: true })
    
    try {
      // 1. 等待服务端处理支付回调（1-2秒）
      await this.sleep(2000)
      
      // 2. 刷新用户购买状态
      await accessManager.refreshUserPurchaseStatus()
      
      // 3. 重新拉取章节并判断权限（应为 unlocked_purchased）
      const chapterRes = await app.request({
        url: this._getChapterUrl({}),
        silent: true
      })
      let newAccessState = await accessManager.determineAccessState(
        this.data.sectionId,
        chapterRes
      )
      
      if (newAccessState !== 'unlocked_purchased') {
        console.log('[Pay] 权限未生效，1秒后重试...')
        await this.sleep(1000)
        newAccessState = await accessManager.determineAccessState(
          this.data.sectionId,
          chapterRes
        )
      }
      
      const canAccess = accessManager.canAccessFullContent(newAccessState)
      
      this.setData({
        accessState: newAccessState,
        canAccess,
        showPaywall: !canAccess
      })
      
      // 4. 重新加载全文
      await this.loadContent(this.data.sectionId, newAccessState, chapterRes)
      
      // 5. 初始化阅读追踪
      if (canAccess) {
        readingTracker.init(this.data.sectionId)
      }
      
      wx.hideLoading()
      wx.showToast({ title: '购买成功', icon: 'success' })
      
    } catch (e) {
      wx.hideLoading()
      console.error('[Pay] 支付后更新失败:', e)
      wx.showModal({
        title: '提示',
        content: '购买成功，但内容加载失败，请返回重新进入',
        showCancel: false
      })
    }
  },

  // ✅ 刷新用户购买状态（从服务器获取最新数据）
  async refreshUserPurchaseStatus() {
    try {
      const userId = app.globalData.userInfo?.id
      if (!userId) {
        console.warn('[Pay] 用户未登录，无法刷新购买状态')
        return
      }

      // 调用专门的购买状态查询接口
      const res = await app.request(`/api/miniprogram/user/purchase-status?userId=${userId}`)

      if (res.success && res.data) {
        // 更新全局购买状态
        app.globalData.hasFullBook = res.data.hasFullBook
        app.globalData.purchasedSections = res.data.purchasedSections || []
        
        // 更新用户信息中的购买记录
        const userInfo = app.globalData.userInfo || {}
        userInfo.hasFullBook = res.data.hasFullBook
        userInfo.purchasedSections = res.data.purchasedSections || []
        app.globalData.userInfo = userInfo
        wx.setStorageSync('userInfo', userInfo)
        
        console.log('[Pay] ✅ 购买状态已刷新:', {
          hasFullBook: res.data.hasFullBook,
          purchasedCount: res.data.purchasedSections.length
        })
      }
    } catch (e) {
      console.error('[Pay] 刷新购买状态失败:', e)
      // 刷新失败时不影响用户体验，只是记录日志
    }
  },

  // 调用微信支付
  callWechatPay(paymentData) {
    return new Promise((resolve, reject) => {
      wx.requestPayment({
        timeStamp: paymentData.timeStamp,
        nonceStr: paymentData.nonceStr,
        package: paymentData.package,
        signType: paymentData.signType || 'MD5',
        paySign: paymentData.paySign,
        success: resolve,
        fail: reject
      })
    })
  },

  // 跳转到上一篇
  goToPrev() {
    if (this.data.prevSection) {
      const q = this.data.prevSection.mid ? `mid=${this.data.prevSection.mid}` : `id=${this.data.prevSection.id}`
      wx.redirectTo({ url: `/pages/read/read?${q}` })
    }
  },

  // 跳转到下一篇
  goToNext() {
    if (this.data.nextSection) {
      const q = this.data.nextSection.mid ? `mid=${this.data.nextSection.mid}` : `id=${this.data.nextSection.id}`
      wx.redirectTo({ url: `/pages/read/read?${q}` })
    }
  },

  // 跳转到推广中心
  goToReferral() {
    wx.navigateTo({ url: '/pages/referral/referral' })
  },

  // 生成海报
  async generatePoster() {
    wx.showLoading({ title: '生成中...' })
    this.setData({ showPosterModal: true, isGeneratingPoster: true })
    
    try {
      const ctx = wx.createCanvasContext('posterCanvas', this)
      const { section, contentParagraphs, sectionId } = this.data
      const userInfo = app.globalData.userInfo
      const userId = userInfo?.id || ''
      
      // 获取小程序码（带推荐人参数）
      let qrcodeImage = null
      try {
        const scene = userId ? `id=${sectionId}&ref=${userId.slice(0,10)}` : `id=${sectionId}`
        const qrRes = await app.request('/api/miniprogram/qrcode', {
          method: 'POST',
          data: { scene, page: 'pages/read/read', width: 280 }
        })
        if (qrRes.success && qrRes.image) {
          qrcodeImage = qrRes.image
        }
      } catch (e) {
        console.log('[Poster] 获取小程序码失败，使用占位符')
      }
      
      // 海报尺寸 300x450
      const width = 300
      const height = 450
      
      // 背景渐变
      const grd = ctx.createLinearGradient(0, 0, 0, height)
      grd.addColorStop(0, '#1a1a2e')
      grd.addColorStop(1, '#16213e')
      ctx.setFillStyle(grd)
      ctx.fillRect(0, 0, width, height)
      
      // 顶部装饰条
      ctx.setFillStyle('#00CED1')
      ctx.fillRect(0, 0, width, 4)
      
      // 标题区域
      ctx.setFillStyle('#ffffff')
      ctx.setFontSize(14)
      ctx.fillText('📚 Soul创业派对', 20, 35)
      
      // 章节标题
      ctx.setFontSize(18)
      ctx.setFillStyle('#ffffff')
      const title = section?.title || '精彩内容'
      const titleLines = this.wrapText(ctx, title, width - 40, 18)
      let y = 70
      titleLines.forEach(line => {
        ctx.fillText(line, 20, y)
        y += 26
      })
      
      // 分隔线
      ctx.setStrokeStyle('rgba(255,255,255,0.1)')
      ctx.beginPath()
      ctx.moveTo(20, y + 10)
      ctx.lineTo(width - 20, y + 10)
      ctx.stroke()
      
      // 内容摘要
      ctx.setFontSize(12)
      ctx.setFillStyle('rgba(255,255,255,0.8)')
      y += 30
      const summary = contentParagraphs.slice(0, 3).join(' ').slice(0, 150) + '...'
      const summaryLines = this.wrapText(ctx, summary, width - 40, 12)
      summaryLines.slice(0, 6).forEach(line => {
        ctx.fillText(line, 20, y)
        y += 20
      })
      
      // 底部区域背景
      ctx.setFillStyle('rgba(0,206,209,0.1)')
      ctx.fillRect(0, height - 100, width, 100)
      
      // 左侧提示文字
      ctx.setFillStyle('#ffffff')
      ctx.setFontSize(13)
      ctx.fillText('长按识别小程序码', 20, height - 60)
      ctx.setFillStyle('rgba(255,255,255,0.6)')
      ctx.setFontSize(11)
      ctx.fillText('长按小程序码阅读全文', 20, height - 38)
      
      // 绘制小程序码或占位符
      const drawQRCode = () => {
        return new Promise((resolve) => {
          if (qrcodeImage) {
            // 下载base64图片并绘制
            const fs = wx.getFileSystemManager()
            const filePath = `${wx.env.USER_DATA_PATH}/qrcode_${Date.now()}.png`
            const base64Data = qrcodeImage.replace(/^data:image\/\w+;base64,/, '')
            
            fs.writeFile({
              filePath,
              data: base64Data,
              encoding: 'base64',
              success: () => {
                ctx.drawImage(filePath, width - 85, height - 85, 70, 70)
                resolve()
              },
              fail: () => {
                this.drawQRPlaceholder(ctx, width, height)
                resolve()
              }
            })
          } else {
            this.drawQRPlaceholder(ctx, width, height)
            resolve()
          }
        })
      }
      
      await drawQRCode()
      
      ctx.draw(true, () => {
        wx.hideLoading()
        this.setData({ isGeneratingPoster: false })
      })
    } catch (e) {
      console.error('生成海报失败:', e)
      wx.hideLoading()
      wx.showToast({ title: '生成失败', icon: 'none' })
      this.setData({ showPosterModal: false, isGeneratingPoster: false })
    }
  },
  
  // 绘制小程序码占位符
  drawQRPlaceholder(ctx, width, height) {
    ctx.setFillStyle('#ffffff')
    ctx.beginPath()
    ctx.arc(width - 50, height - 50, 35, 0, Math.PI * 2)
    ctx.fill()
    ctx.setFillStyle('#00CED1')
    ctx.setFontSize(9)
    ctx.fillText('扫码', width - 57, height - 52)
    ctx.fillText('阅读', width - 57, height - 40)
  },
  
  // 文字换行处理
  wrapText(ctx, text, maxWidth, fontSize) {
    const lines = []
    let line = ''
    for (let i = 0; i < text.length; i++) {
      const testLine = line + text[i]
      const metrics = ctx.measureText(testLine)
      if (metrics.width > maxWidth && line) {
        lines.push(line)
        line = text[i]
      } else {
        line = testLine
      }
    }
    if (line) lines.push(line)
    return lines
  },
  
  // 关闭海报弹窗
  closePosterModal() {
    this.setData({ showPosterModal: false })
  },
  
  // 保存海报到相册
  savePoster() {
    wx.canvasToTempFilePath({
      canvasId: 'posterCanvas',
      success: (res) => {
        wx.saveImageToPhotosAlbum({
          filePath: res.tempFilePath,
          success: () => {
            wx.showToast({ title: '已保存到相册', icon: 'success' })
            this.setData({ showPosterModal: false })
          },
          fail: (err) => {
            if (err.errMsg.includes('auth deny')) {
              wx.showModal({
                title: '提示',
                content: '需要相册权限才能保存海报',
                confirmText: '去设置',
                success: (res) => {
                  if (res.confirm) {
                    wx.openSetting()
                  }
                }
              })
            } else {
              wx.showToast({ title: '保存失败', icon: 'none' })
            }
          }
        })
      },
      fail: () => {
        wx.showToast({ title: '生成图片失败', icon: 'none' })
      }
    }, this)
  },

  // 阻止冒泡
  stopPropagation() {},

  // 【新增】页面隐藏时上报阅读进度
  onHide() {
    readingTracker.onPageHide()
  },

  // 【新增】页面卸载时清理追踪器
  onUnload() {
    readingTracker.cleanup()
  },

  // 【新增】重试加载（当 accessState 为 error 时）
  async handleRetry() {
    wx.showLoading({ title: '重试中...', mask: true })
    
    try {
      const config = await accessManager.fetchLatestConfig()
      this.setData({
        sectionPrice: config.prices?.section ?? 1,
        fullBookPrice: config.prices?.fullbook ?? 9.9
      })
      
      // 重新拉取章节，用 isFree/price 判断免费
      const chapterRes = await app.request({
        url: this._getChapterUrl({}),
        silent: true
      })
      const newAccessState = await accessManager.determineAccessState(
        this.data.sectionId,
        chapterRes
      )
      const canAccess = accessManager.canAccessFullContent(newAccessState)
      
      this.setData({
        accessState: newAccessState,
        canAccess,
        showPaywall: !canAccess
      })
      
      await this.loadContent(this.data.sectionId, newAccessState, chapterRes)
      
      // 如果有权限，初始化阅读追踪
      if (canAccess) {
        readingTracker.init(this.data.sectionId)
      }
      
      // 加载导航
      this.loadNavigation(this.data.sectionId)
      
      wx.hideLoading()
      wx.showToast({ title: '加载成功', icon: 'success' })
      
    } catch (e) {
      wx.hideLoading()
      console.error('[Read] 重试失败:', e)
      wx.showToast({ title: '重试失败，请检查网络', icon: 'none' })
    }
  },

  // 工具：延迟
  sleep(ms) {
    return new Promise(resolve => setTimeout(resolve, ms))
  }
})