/**
 * Soul创业派对 - 目录页
 * 开发: 卡若
 * 技术支持: 存客宝
 * 数据: 完整真实文章标题
 */

const app = getApp()

Page({
  data: {
    // 系统信息
    statusBarHeight: 44,
    navBarHeight: 88,
    
    // 用户状态
    isLoggedIn: false,
    hasFullBook: false,
    purchasedSections: [],
    
    // 书籍数据：以后台内容管理为准，仅用接口 /api/miniprogram/book/all-chapters 返回的数据
    totalSections: 0,
    bookData: [],
    
    // 展开状态：默认不展开任何篇章，直接显示目录
    expandedPart: null,
    
    // 附录
    appendixList: [
      { id: 'appendix-1', title: '附录1｜Soul派对房精选对话' },
      { id: 'appendix-2', title: '附录2｜创业者自检清单' },
      { id: 'appendix-3', title: '附录3｜本书提到的工具和资源' }
    ],

    // 每日新增章节
    dailyChapters: []
  },

  onLoad() {
    wx.showShareMenu({ withShareTimeline: true })
    this.setData({
      statusBarHeight: app.globalData.statusBarHeight,
      navBarHeight: app.globalData.navBarHeight
    })
    this.updateUserStatus()
    this.loadChaptersOnce()
  },

  // 固定模块（序言、尾声、附录）不参与中间篇章
  _isFixedPart(pt) {
    if (!pt) return false
    const p = String(pt).toLowerCase().replace(/[_\s｜|]/g, '')
    return p.includes('序言') || p.includes('尾声') || p.includes('附录')
  },

  // 一次请求拉取全量目录，以后台内容管理为准；同时更新 totalSections / bookData / dailyChapters
  async loadChaptersOnce() {
    try {
      const res = await app.request({ url: '/api/miniprogram/book/all-chapters', silent: true })
      const rows = (res && res.data) || (res && res.chapters) || []

      // 无数据时清空目录，避免展示旧数据
      if (rows.length === 0) {
        app.globalData.bookData = []
        wx.setStorageSync('bookData', [])
        this.setData({
          bookData: [],
          totalSections: 0,
          dailyChapters: [],
          expandedPart: null
        })
        return
      }

      const totalSections = res.total ?? rows.length
      app.globalData.bookData = rows
      wx.setStorageSync('bookData', rows)

      // bookData：过滤序言/尾声/附录，按 part 聚合，篇章顺序按 sort_order 与后台一致（含「2026每日派对干货」等）
      const filtered = rows.filter(r => !this._isFixedPart(r.partTitle || r.part_title))
      const partMap = new Map()
      const numbers = ['一', '二', '三', '四', '五', '六', '七', '八', '九', '十', '十一', '十二']
      filtered.forEach((r) => {
        const pid = r.partId || r.part_id || 'part-1'
        const cid = r.chapterId || r.chapter_id || 'chapter-1'
        const sortOrder = r.sectionOrder ?? r.sort_order ?? 999999
        if (!partMap.has(pid)) {
          const partIdx = partMap.size
          partMap.set(pid, {
            id: pid,
            number: numbers[partIdx] || String(partIdx + 1),
            title: r.partTitle || r.part_title || '未分类',
            subtitle: r.chapterTitle || r.chapter_title || '',
            chapters: new Map(),
            minSortOrder: sortOrder
          })
        }
        const part = partMap.get(pid)
        if (sortOrder < part.minSortOrder) part.minSortOrder = sortOrder
        if (!part.chapters.has(cid)) {
          part.chapters.set(cid, {
            id: cid,
            title: r.chapterTitle || r.chapter_title || '未分类',
            sections: []
          })
        }
        const ch = part.chapters.get(cid)
        ch.sections.push({
          id: r.id,
          mid: r.mid ?? r.MID ?? 0,
          title: r.sectionTitle || r.section_title || r.title || '',
          isFree: r.isFree === true || (r.price !== undefined && r.price === 0),
          price: r.price ?? 1,
          isNew: r.isNew === true || r.is_new === true
        })
      })
      const partList = Array.from(partMap.values())
      partList.sort((a, b) => (a.minSortOrder ?? 999999) - (b.minSortOrder ?? 999999))
      const bookData = partList.map((p, idx) => ({
        id: p.id,
        number: numbers[idx] || String(idx + 1),
        title: p.title,
        subtitle: p.subtitle,
        chapters: Array.from(p.chapters.values())
      }))

      const baseSort = 62
      const daily = rows
        .filter(r => (r.sectionOrder ?? r.sort_order ?? 0) > baseSort)
        .sort((a, b) => new Date(b.updatedAt || b.updated_at || 0) - new Date(a.updatedAt || a.updated_at || 0))
        .slice(0, 20)
        .map(c => {
          const d = new Date(c.updatedAt || c.updated_at || Date.now())
          return {
            id: c.id,
            mid: c.mid ?? c.MID ?? 0,
            title: c.section_title || c.title || c.sectionTitle,
            price: c.price ?? 1,
            dateStr: `${d.getMonth() + 1}/${d.getDate()}`
          }
        })

      this.setData({
        bookData,
        totalSections,
        dailyChapters: daily,
        expandedPart: this.data.expandedPart
      })
    } catch (e) {
      console.log('[Chapters] 加载目录失败:', e)
      this.setData({ bookData: [], totalSections: 0 })
    }
  },

  onPullDownRefresh() {
    this.loadChaptersOnce().then(() => wx.stopPullDownRefresh()).catch(() => wx.stopPullDownRefresh())
  },

  onShow() {
    // 设置TabBar选中状态
    if (typeof this.getTabBar === 'function' && this.getTabBar()) {
      const tabBar = this.getTabBar()
      if (tabBar.updateSelected) {
        tabBar.updateSelected()
      } else {
        tabBar.setData({ selected: 1 })
      }
    }
    this.updateUserStatus()
  },

  // 更新用户状态
  updateUserStatus() {
    const { isLoggedIn, hasFullBook, purchasedSections } = app.globalData
    this.setData({ isLoggedIn, hasFullBook, purchasedSections })
  },

  // 切换展开状态
  togglePart(e) {
    const partId = e.currentTarget.dataset.id
    this.setData({
      expandedPart: this.data.expandedPart === partId ? null : partId
    })
  },

  // 跳转到阅读页（优先传 mid，与分享逻辑一致）
  goToRead(e) {
    const id = e.currentTarget.dataset.id
    const mid = e.currentTarget.dataset.mid || app.getSectionMid(id)
    const q = mid ? `mid=${mid}` : `id=${id}`
    wx.navigateTo({ url: `/pages/read/read?${q}` })
  },

  // 检查是否已购买
  hasPurchased(sectionId) {
    if (this.data.hasFullBook) return true
    return this.data.purchasedSections.includes(sectionId)
  },

  // 返回首页
  goBack() {
    wx.switchTab({ url: '/pages/index/index' })
  },

  // 跳转到搜索页
  goToSearch() {
    wx.navigateTo({ url: '/pages/search/search' })
  },

  onShareAppMessage() {
    const ref = app.getMyReferralCode()
    return {
      title: 'Soul创业派对 - 目录',
      path: ref ? `/pages/chapters/chapters?ref=${ref}` : '/pages/chapters/chapters'
    }
  },

  onShareTimeline() {
    const ref = app.getMyReferralCode()
    return { title: 'Soul创业派对 - 真实商业故事', query: ref ? `ref=${ref}` : '' }
  }
})