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

console.log('[Index] ===== 首页文件开始加载 =====')

const app = getApp()
const PART_NUMBERS = { 'part-1': '一', 'part-2': '二', 'part-3': '三', 'part-4': '四', 'part-5': '五' }

Page({
  data: {
    // 系统信息
    statusBarHeight: 44,
    navBarHeight: 88,
    
    // 用户信息
    isLoggedIn: false,
    hasFullBook: false,
    readCount: 0,
    
    totalSections: 62,
    bookData: [],
    featuredSections: [],
    latestSection: null,
    latestLabel: '最新更新',
    partsList: [],
    prefaceMid: 0,
    loading: true
  },

  onLoad(options) {
    console.log('[Index] ===== onLoad 触发 =====')
    
    // 获取系统信息
    this.setData({
      statusBarHeight: app.globalData.statusBarHeight,
      navBarHeight: app.globalData.navBarHeight
    })
    
    // 处理分享参数与扫码 scene（推荐码绑定）
    if (options && (options.ref || options.scene)) {
      app.handleReferralCode(options)
    }
    
    // 初始化数据
    this.initData()
  },

  onShow() {
    console.log('[Index] onShow 触发')
    
    // 设置TabBar选中状态
    if (typeof this.getTabBar === 'function' && this.getTabBar()) {
      const tabBar = this.getTabBar()
      console.log('[Index] TabBar 组件:', tabBar ? '已找到' : '未找到')
      
      // 主动触发配置加载
      if (tabBar && tabBar.loadFeatureConfig) {
        console.log('[Index] 主动调用 TabBar.loadFeatureConfig()')
        tabBar.loadFeatureConfig()
      }
      
      // 更新选中状态
      if (tabBar && tabBar.updateSelected) {
        tabBar.updateSelected()
      } else if (tabBar) {
        tabBar.setData({ selected: 0 })
      }
    } else {
      console.log('[Index] TabBar 组件未找到或 getTabBar 方法不存在')
    }
    
    // 更新用户状态
    this.updateUserStatus()
  },

  // 初始化数据
  async initData() {
    this.setData({ loading: true })
    
    try {
      await this.loadBookData()
    } catch (e) {
      console.error('初始化失败:', e)
    } finally {
      this.setData({ loading: false })
    }
  },

  async loadBookData() {
    try {
      const [chaptersRes, hotRes] = await Promise.all([
        app.request('/api/miniprogram/book/all-chapters'),
        app.request('/api/miniprogram/book/hot')
      ])
      const list = chaptersRes?.data || []
      const hotList = hotRes?.data || []
      app.globalData.bookData = list

      const toSection = (ch) => ({
        id: ch.id,
        mid: ch.mid || 0,
        title: ch.sectionTitle || ch.chapterTitle || ch.id,
        part: ch.partTitle || ''
      })

      let featuredSections = []
      if (hotList.length >= 3) {
        const freeCh = list.find(c => c.isFree || c.id === '1.1' || c.id === 'preface')
        const picks = []
        if (freeCh) picks.push({ ...toSection(freeCh), tag: '免费', tagClass: 'tag-free' })
        hotList.slice(0, 3 - picks.length).forEach((ch, i) => {
          if (!picks.find(p => p.id === ch.id)) {
            picks.push({ ...toSection(ch), tag: i === 0 ? '热门' : '推荐', tagClass: i === 0 ? 'tag-pink' : 'tag-purple' })
          }
        })
        featuredSections = picks.slice(0, 3)
      }
      if (featuredSections.length < 3 && list.length > 0) {
        const fallback = list.filter(c => c.id && !['preface', 'epilogue'].includes(c.id)).slice(0, 3)
        featuredSections = fallback.map((ch, i) => ({
          ...toSection(ch),
          tag: ch.isFree ? '免费' : (i === 0 ? '热门' : '推荐'),
          tagClass: ch.isFree ? 'tag-free' : (i === 0 ? 'tag-pink' : 'tag-purple')
        }))
      }

      const partMap = {}
      list.forEach(ch => {
        if (!ch.partId || ch.id === 'preface' || ch.id === 'epilogue' || (ch.id || '').startsWith('appendix')) return
        if (!partMap[ch.partId]) {
          partMap[ch.partId] = { id: ch.partId, number: PART_NUMBERS[ch.partId] || ch.partId, title: ch.partTitle || ch.partId, subtitle: ch.chapterTitle || '' }
        }
      })
      const partsList = Object.values(partMap).sort((a, b) => (a.id || '').localeCompare(b.id || ''))

      const paidCandidates = list.filter(c => c.id && !['preface', 'epilogue'].includes(c.id) && !(c.id || '').startsWith('appendix') && c.partId)
      const { hasFullBook, purchasedSections } = app.globalData
      let candidates = paidCandidates
      if (!hasFullBook && purchasedSections?.length) {
        const unpurchased = paidCandidates.filter(c => !purchasedSections.includes(c.id))
        if (unpurchased.length > 0) candidates = unpurchased
      }
      const userId = app.globalData.userInfo?.id || wx.getStorageSync('userId') || 'guest'
      const today = new Date().toISOString().split('T')[0]
      const seed = (userId + today).split('').reduce((a, b) => a + b.charCodeAt(0), 0)
      const selectedCh = candidates[seed % Math.max(candidates.length, 1)]
      const latestSection = selectedCh ? { ...toSection(selectedCh), mid: selectedCh.mid || 0 } : null
      const latestLabel = candidates.length === paidCandidates.length ? '推荐阅读' : '为你推荐'

      const prefaceCh = list.find(c => c.id === 'preface')
      const prefaceMid = prefaceCh?.mid || 0

      this.setData({
        bookData: list,
        totalSections: list.length || 62,
        featuredSections,
        partsList,
        latestSection,
        latestLabel,
        prefaceMid
      })
    } catch (e) {
      console.error('加载书籍数据失败:', e)
      this.setData({ featuredSections: [], partsList: [], latestSection: null })
    }
  },

  // 更新用户状态（已读数 = 用户实际打开过的章节数，仅统计有权限阅读的）
  updateUserStatus() {
    const { isLoggedIn, hasFullBook, purchasedSections } = app.globalData
    const readCount = Math.min(app.getReadCount(), this.data.totalSections || 62)
    this.setData({
      isLoggedIn,
      hasFullBook,
      readCount
    })
  },

  // 跳转到目录
  goToChapters() {
    wx.switchTab({ url: '/pages/chapters/chapters' })
  },

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

  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}` })
  },

  // 跳转到匹配页
  goToMatch() {
    wx.switchTab({ url: '/pages/match/match' })
  },

  // 跳转到我的页面
  goToMy() {
    wx.switchTab({ url: '/pages/my/my' })
  },

  // 下拉刷新
  async onPullDownRefresh() {
    await this.initData()
    this.updateUserStatus()
    wx.stopPullDownRefresh()
  },

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