/**
 * Soul创业派对 - 阅读页
 * 开发: 卡若
 * 技术支持: 存客宝
 */

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,
    
    // 用户状态
    isLoggedIn: false,
    hasFullBook: false,
    canAccess: false,
    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,
    showPosterModal: false,
    isPaying: false,
    isGeneratingPoster: false,
    
    // 免费章节
    freeIds: ['preface', 'epilogue', '1.1', 'appendix-1', 'appendix-2', 'appendix-3']
  },

  onLoad(options) {
    const { id, ref } = options
    
    this.setData({
      statusBarHeight: app.globalData.statusBarHeight,
      navBarHeight: app.globalData.navBarHeight,
      sectionId: id
    })
    
    // 处理推荐码绑定
    if (ref) {
      console.log('[Read] 检测到推荐码:', ref)
      wx.setStorageSync('referral_code', ref)
      app.handleReferralCode({ query: { ref } })
    }
    
    this.initSection(id)
  },

  onPageScroll(e) {
    // 计算阅读进度
    const query = wx.createSelectorQuery()
    query.select('.page').boundingClientRect()
    query.exec((res) => {
      if (res[0]) {
        const scrollTop = e.scrollTop
        const pageHeight = res[0].height - this.data.statusBarHeight - 200
        const progress = pageHeight > 0 ? Math.min((scrollTop / pageHeight) * 100, 100) : 0
        this.setData({ readingProgress: progress })
      }
    })
  },

  // 初始化章节
  async initSection(id) {
    this.setData({ loading: true })
    
    try {
      // 模拟获取章节数据
      const section = this.getSectionInfo(id)
      const { isLoggedIn, hasFullBook, purchasedSections } = app.globalData
      
      const isFree = this.data.freeIds.includes(id)
      const isPurchased = hasFullBook || (purchasedSections && purchasedSections.includes(id))
      const canAccess = isFree || isPurchased
      const purchasedCount = purchasedSections?.length || 0
      
      this.setData({
        section,
        isLoggedIn,
        hasFullBook,
        canAccess,
        purchasedCount,
        showPaywall: !canAccess
      })
      
      // 加载内容
      await this.loadContent(id)
      
      // 获取上一篇/下一篇
      this.loadNavigation(id)
      
    } catch (e) {
      console.error('初始化章节失败:', e)
      wx.showToast({ title: '加载失败', icon: 'none' })
    } finally {
      this.setData({ loading: false })
    }
  },

  // 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}`
  },

  // 加载内容 - 从真实API读取章节内容
  async loadContent(id) {
    try {
      // 从API获取真实章节内容
      const res = await app.request(`/api/book/chapter/${id}`)
      if (res && res.content) {
        const lines = res.content.split('\n').filter(line => line.trim())
        const previewCount = Math.ceil(lines.length * 0.2)
        
        this.setData({
          content: res.content,
          previewContent: lines.slice(0, previewCount).join('\n'),
          contentParagraphs: lines,
          previewParagraphs: lines.slice(0, previewCount),
          partTitle: res.partTitle || '',
          chapterTitle: res.chapterTitle || ''
        })
        console.log('[Read] 成功加载章节内容:', id)
        return
      }
    } catch (e) {
      console.error('[Read] API加载章节失败:', e.message)
    }
    
    // API失败时显示提示，不使用假内容
    this.setData({
      content: '章节内容加载中，请稍候...',
      previewContent: '章节内容加载中，请稍候...',
      contentParagraphs: ['章节内容加载中，请稍候...', '如果长时间无法加载，请检查网络连接后刷新页面。'],
      previewParagraphs: ['章节内容加载中，请稍候...']
    })
    
    // 延迟重试一次
    setTimeout(async () => {
      try {
        const res = await app.request(`/api/book/chapter/${id}`)
        if (res && res.content) {
          const lines = res.content.split('\n').filter(line => line.trim())
          const previewCount = Math.ceil(lines.length * 0.2)
          this.setData({
            content: res.content,
            previewContent: lines.slice(0, previewCount).join('\n'),
            contentParagraphs: lines,
            previewParagraphs: lines.slice(0, previewCount),
            partTitle: res.partTitle || '',
            chapterTitle: res.chapterTitle || ''
          })
        }
      } catch (e) {
        console.error('[Read] 重试加载失败:', e.message)
      }
    }, 2000)
  },


  // 加载导航
  loadNavigation(id) {
    const sectionOrder = [
      'preface', '1.1', '1.2', '1.3', '1.4', '1.5',
      '2.1', '2.2', '2.3', '2.4', '2.5',
      '3.1', '3.2', '3.3', '3.4',
      '4.1', '4.2', '4.3', '4.4', '4.5',
      '5.1', '5.2', '5.3', '5.4', '5.5',
      '6.1', '6.2', '6.3', '6.4',
      '7.1', '7.2', '7.3', '7.4', '7.5',
      '8.1', '8.2', '8.3', '8.4', '8.5', '8.6',
      '9.1', '9.2', '9.3', '9.4', '9.5', '9.6', '9.7', '9.8', '9.9', '9.10', '9.11', '9.12', '9.13', '9.14',
      '10.1', '10.2', '10.3', '10.4',
      '11.1', '11.2', '11.3', '11.4', '11.5',
      'epilogue'
    ]
    
    const currentIndex = sectionOrder.indexOf(id)
    const prevId = currentIndex > 0 ? sectionOrder[currentIndex - 1] : null
    const nextId = currentIndex < sectionOrder.length - 1 ? sectionOrder[currentIndex + 1] : null
    
    this.setData({
      prevSection: prevId ? { id: prevId, title: this.getSectionTitle(prevId) } : null,
      nextSection: nextId ? { id: nextId, title: this.getSectionTitle(nextId) } : null
    })
  },

  // 返回
  goBack() {
    wx.navigateBack({
      fail: () => wx.switchTab({ url: '/pages/chapters/chapters' })
    })
  },

  // 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 })
      }
    })
  },

  // 分享到微信 - 自动带分享人ID
  onShareAppMessage() {
    const { section, sectionId } = this.data
    const userInfo = app.globalData.userInfo
    const referralCode = userInfo?.referralCode || wx.getStorageSync('referralCode') || ''
    
    // 分享标题优化
    const shareTitle = section?.title 
      ? `📚 ${section.title.length > 20 ? section.title.slice(0, 20) + '...' : section.title}`
      : '📚 Soul创业派对 - 真实商业故事'
    
    return {
      title: shareTitle,
      path: `/pages/read/read?id=${sectionId}${referralCode ? '&ref=' + referralCode : ''}`,
      imageUrl: '/assets/share-cover.png' // 可配置分享封面图
    }
  },
  
  // 分享到朋友圈
  onShareTimeline() {
    const { section, sectionId } = this.data
    const userInfo = app.globalData.userInfo
    const referralCode = userInfo?.referralCode || ''
    
    return {
      title: `${section?.title || 'Soul创业派对'} - 来自派对房的真实故事`,
      query: `id=${sectionId}${referralCode ? '&ref=' + referralCode : ''}`
    }
  },

  // 显示登录弹窗
  showLoginModal() {
    this.setData({ showLoginModal: true })
  },

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

  // 微信登录
  async handleWechatLogin() {
    try {
      const result = await app.login()
      if (result) {
        this.setData({ showLoginModal: false })
        this.initSection(this.data.sectionId)
        wx.showToast({ title: '登录成功', icon: 'success' })
      }
    } catch (e) {
      wx.showToast({ title: '登录失败', icon: 'none' })
    }
  },

  // 手机号登录
  async handlePhoneLogin(e) {
    if (!e.detail.code) {
      return this.handleWechatLogin()
    }
    
    try {
      const result = await app.loginWithPhone(e.detail.code)
      if (result) {
        this.setData({ showLoginModal: false })
        this.initSection(this.data.sectionId)
        wx.showToast({ title: '登录成功', icon: 'success' })
      }
    } catch (e) {
      wx.showToast({ title: '登录失败', icon: 'none' })
    }
  },

  // 购买章节 - 直接调起支付
  async handlePurchaseSection() {
    if (!this.data.isLoggedIn) {
      this.setData({ showLoginModal: true })
      return
    }
    
    await this.processPayment('section', this.data.sectionId, this.data.section.price)
  },

  // 购买全书 - 直接调起支付
  async handlePurchaseFullBook() {
    if (!this.data.isLoggedIn) {
      this.setData({ showLoginModal: true })
      return
    }
    
    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) {
    // 检查是否已购买（避免重复购买）
    if (type === 'section' && sectionId) {
      const purchasedSections = app.globalData.purchasedSections || []
      if (purchasedSections.includes(sectionId)) {
        wx.showToast({ title: '已购买过此章节', icon: 'none' })
        return
      }
    }
    
    if (type === 'fullbook' && app.globalData.hasFullBook) {
      wx.showToast({ title: '已购买全书', icon: 'none' })
      return
    }
    
    this.setData({ isPaying: 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')
        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.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) + '...' })
      
      // 2. 调用后端创建预支付订单
      let paymentData = null
      
      try {
        const res = await app.request('/api/miniprogram/pay', {
          method: 'POST',
          data: {
            openId,
            productType: type,
            productId: sectionId,
            amount,
            description: type === 'fullbook' ? '《一场Soul的创业实验》全书' : `章节-${sectionId}`,
            userId: app.globalData.userInfo?.id || ''
          }
        })
        
        console.log('[Pay] 创建订单响应:', res)
        
        if (res.success && res.data?.payParams) {
          paymentData = res.data.payParams
          console.log('[Pay] 获取支付参数成功')
        } else {
          throw new Error(res.error || '创建订单失败')
        }
      } catch (apiError) {
        console.error('[Pay] API创建订单失败:', apiError.message)
        wx.showToast({ title: '支付服务暂时不可用，请稍后重试', icon: 'none', duration: 3000 })
        this.setData({ isPaying: false })
        return
      }
      
      // 3. 调用微信支付
      console.log('[Pay] 调起微信支付')
      await this.callWechatPay(paymentData)
      
      // 4. 支付成功，更新本地数据
      this.mockPaymentSuccess(type, sectionId)
      wx.showToast({ title: '购买成功', icon: 'success' })
      
      // 5. 刷新页面
      this.initSection(this.data.sectionId)
      
    } catch (e) {
      console.error('[Pay] 支付失败:', e)
      
      if (e.errMsg && e.errMsg.includes('cancel')) {
        wx.showToast({ title: '已取消支付', icon: 'none' })
      } else {
        wx.showToast({ title: e.errMsg || '支付失败', icon: 'none' })
      }
    } finally {
      this.setData({ isPaying: false })
    }
  },

  // 模拟支付成功
  mockPaymentSuccess(type, sectionId) {
    if (type === 'fullbook') {
      app.globalData.hasFullBook = true
      const userInfo = app.globalData.userInfo || {}
      userInfo.hasFullBook = true
      app.globalData.userInfo = userInfo
      wx.setStorageSync('userInfo', userInfo)
    } else if (sectionId) {
      const purchasedSections = app.globalData.purchasedSections || []
      if (!purchasedSections.includes(sectionId)) {
        purchasedSections.push(sectionId)
        app.globalData.purchasedSections = purchasedSections
        
        const userInfo = app.globalData.userInfo || {}
        userInfo.purchasedSections = purchasedSections
        app.globalData.userInfo = userInfo
        wx.setStorageSync('userInfo', userInfo)
      }
    }
  },

  // 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) {
      wx.redirectTo({ url: `/pages/read/read?id=${this.data.prevSection.id}` })
    }
  },

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

  // 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 } = this.data
      const userInfo = app.globalData.userInfo
      const referralCode = userInfo?.referralCode || 'SOUL'
      
      // 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 - 120, width, 120)
      
      // 小程序码占位（实际需要获取小程序码图片）
      ctx.setFillStyle('#ffffff')
      ctx.beginPath()
      ctx.arc(width - 55, height - 60, 35, 0, Math.PI * 2)
      ctx.fill()
      ctx.setFillStyle('#00CED1')
      ctx.setFontSize(10)
      ctx.fillText('扫码阅读', width - 72, height - 58)
      
      // 邀请信息
      ctx.setFillStyle('#ffffff')
      ctx.setFontSize(12)
      ctx.fillText('长按识别 · 阅读全文', 20, height - 70)
      ctx.setFillStyle('#FFD700')
      ctx.setFontSize(11)
      ctx.fillText(`邀请码: ${referralCode}`, 20, height - 50)
      ctx.setFillStyle('rgba(255,255,255,0.6)')
      ctx.setFontSize(10)
      ctx.fillText('好友购买你获90%收益', 20, height - 32)
      
      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 })
    }
  },
  
  // 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() {}
})