/**
 * 首页 - V1.1 新版（U18）
 * 结构：品牌区 → 用户状态条 → Banner → 8入口 → 推荐 → 服务建议 → 活动 → 服务站 → 安全提醒
 */
const { authStore, appStore, matchStore } = require('../../stores')
const api = require('../../utils/api')
// 顶部安全区：实测右上角胶囊按钮矩形，避免品牌栏「消息」入口被胶囊压住（见 utils/nav-metrics.js）
const { navSafeData } = require('../../utils/nav-metrics')

const ENTRY_VISUALS = {
  find_object: { tone: 'rose', iconAsset: '/assets/icons/home/find-object.png' },
  matchmaker: { tone: 'purple', iconAsset: '/assets/icons/home/matchmaker.png' },
  activities: { tone: 'blue', iconAsset: '/assets/icons/home/activity.png' },
  counseling: { tone: 'pink', iconAsset: '/assets/icons/home/counseling.png' },
  classroom: { tone: 'amber', iconAsset: '/assets/icons/home/classroom.png' },
  premarital: { tone: 'indigo', iconAsset: '/assets/icons/home/premarital.png' },
  anti_fraud: { tone: 'red', iconAsset: '/assets/icons/home/anti-fraud.png' },
  service_station: { tone: 'green', iconAsset: '/assets/icons/home/service-station.png' },
}

const QUICK_ENTRIES = [
  { code: 'find_object', label: '找对象', targetPage: '/pages/discover/discover', enabled: true },
  { code: 'matchmaker', label: '公益红娘', targetPage: '/pages/matchmaker/matchmaker', enabled: true },
  { code: 'activities', label: '公益活动', targetPage: '/pages/activity/activity', enabled: true },
  { code: 'counseling', label: '婚恋咨询', targetPage: '/pages/counseling-intro/counseling-intro', enabled: true },
  { code: 'classroom', label: '婚恋课堂', targetPage: '/pages/content/content', enabled: true },
  { code: 'premarital', label: '婚前辅导', targetPage: '/pages/premarital-intro/premarital-intro', enabled: true },
  { code: 'anti_fraud', label: '婚恋反诈', targetPage: '/pages/anti-fraud/anti-fraud', enabled: true },
  { code: 'service_station', label: '善缘服务站', targetPage: '/pages/service-station/service-station', enabled: true },
].map((entry) => ({ ...entry, ...ENTRY_VISUALS[entry.code] }))

Page({
  data: {
    navVars: '',
    unreadCount: 0,
    loading: true,
    loadError: false,
    userState: null,
    isOnboarding: false,
    isPaused: false,
    isSuccessful: false,
    onboardingMessage: '',
    onboardingActions: [],
    statusChecks: [],
    banners: [],
    currentBannerIndex: 0,
    quickEntries: QUICK_ENTRIES,
    recommendations: [],
    recState: 'idle',
    actionLoadingUserId: '',
    serviceRecommendations: [],
    activities: [],
    serviceLocation: null,
    articles: [],
    safetyNotice: {
      text: '实名认证和人工审核可以提高信息真实性，交往过程中仍请谨慎涉及借款、投资和个人隐私。',
      ctaText: '查看婚恋反诈指南',
      ctaTarget: ''
    },
    emptyActions: [
      { text: '查看择偶条件', event: 'preference', variant: 'secondary' },
      { text: '申请公益红娘', event: 'matchmaker', variant: 'primary' },
    ],
  },

  onLoad() {
    // 顶部安全区先算：onLoad 早于首次渲染，避免出现「先压住胶囊再跳开」的闪动
    this.setData(navSafeData())
    // 订阅登录态：会话失效时回到登录引导；刷新成功且首页停在错误态时自动重试。
    this._unsubAuth = authStore.subscribe((state) => {
      if (state.authStatus === 'expired') {
        this.setData({ loading: false, loadError: false, recState: 'idle' })
        this.checkAuthAndLoad()
        return
      }
      if (state.isLoggedIn && this.data.loadError && !this.data.loading) {
        this.loadHomeData()
      }
    })
    this.checkAuthAndLoad()
  },

  onShow() {
    if (authStore.state.isLoggedIn && !this.data.loading) {
      this.loadHomeData()
    }
  },

  onUnload() {
    if (typeof this._unsubAuth === 'function') {
      this._unsubAuth()
      this._unsubAuth = null
    }
  },

  /** 错误态「重试」按钮：重新鉴权判断并加载首页 */
  onRetry() {
    this.checkAuthAndLoad()
  },

  onPullDownRefresh() {
    this.loadHomeData().finally(() => wx.stopPullDownRefresh())
  },

  // ==================== 核心加载 ====================

  async checkAuthAndLoad() {
    if (!authStore.state.isLoggedIn) {
      this.setData({
        loading: false,
        isOnboarding: true,
        onboardingMessage: '登录后即可开始寻找合适的人',
        onboardingActions: [{ text: '去登录', event: 'login', variant: 'primary' }],
      })
      return
    }
    await this.loadHomeData()
  },

  async loadHomeData() {
    this.setData({ loading: true, loadError: false })
    try {
      const res = await api.get('/home')
      this.processHomeData(res)
    } catch (err) {
      console.error('首页数据加载失败', err)
      this.setData({ loading: false, loadError: true, recState: 'error' })
    }
  },

  processHomeData(data) {
    const { userState, banners, quickEntries, recommendations,
            serviceRecommendations, activities, serviceLocation, safetyNotice } = data

    const relStatus = userState?.relationshipStatus || ''
    const profileStatus = userState?.profileStatus || ''
    const eligStatus = userState?.localEligibilityStatus || 'not_declared'

    const isOnboarding = !userState || !userState.verified || (profileStatus !== 'approved' && profileStatus !== 'completed')
    const isPaused = relStatus === 'paused'
    const isSuccessful = relStatus === 'matched_successfully'
    // 注意：本地资格核验通过与否由 checks 里的「本地资格」项表达（eligStatus === 'verified'）。
    // 此前曾有一个 isVerified = eligStatus === 'verified' 的死状态 —— 名字像「实名」实为本地资格，
    // WXML/WXSS 零引用且语义错位（实名判定是 userState.verified），已移除以防未来误用。

    const checks = [
      { label: '已实名', done: userState?.verified || false },
      { label: '本地资格', done: eligStatus === 'verified' },
      { label: '资料已审核', done: profileStatus === 'approved' || profileStatus === 'completed' },
    ]

    this.setData({
      loading: false, loadError: false,
      userState,
      isOnboarding, isPaused, isSuccessful,
      onboardingMessage: this.buildOnboardingMessage(userState, profileStatus, eligStatus),
      onboardingActions: this.buildOnboardingActions(userState, profileStatus, eligStatus),
      statusChecks: checks,
      banners: banners || [],
      quickEntries: quickEntries?.length
        ? QUICK_ENTRIES.map((defaultEntry) => {
          const serverEntry = quickEntries.find((entry) => entry.code === defaultEntry.code)
          return serverEntry
            ? { ...defaultEntry, ...serverEntry, ...ENTRY_VISUALS[defaultEntry.code] }
            : { ...defaultEntry, enabled: false, disabledReason: '服务暂未开放' }
        })
        : QUICK_ENTRIES,
      recommendations: recommendations || [],
      recState: (recommendations && recommendations.length > 0) ? 'loaded' : 'empty',
      serviceRecommendations: serviceRecommendations || [], activities: activities || [], serviceLocation,
      articles: data.articles || [],
      safetyNotice: safetyNotice || this.data.safetyNotice,
    })
  },

  buildOnboardingMessage(state, profileStatus, eligStatus) {
    if (!state) return '登录后即可开始寻找合适的人'
    if (!state.verified) return '完成实名认证后，即可继续完善资料并使用公益婚恋服务'
    if (profileStatus === 'pending_review') return '资料正在人工审核，请耐心等待审核结果'
    if (eligStatus === 'not_declared') return '完成本地资格声明后即可开始寻找合适的人'
    if (eligStatus === 'needs_evidence') return '补充本地资格佐证后即可开始寻找合适的人'
    if (profileStatus !== 'approved' && profileStatus !== 'completed') return '资料审核通过后即可开始寻找合适的人'
    return '完成资料后开始寻找合适的人'
  },

  buildOnboardingActions(state, profileStatus, eligStatus) {
    if (!state) return [{ text: '去登录', event: 'login', variant: 'primary' }]
    const actions = []
    if (eligStatus === 'not_declared' || eligStatus === 'needs_evidence') {
      actions.push({ text: '声明本地资格', event: 'local-eligibility', variant: 'primary' })
    }
    if (profileStatus !== 'approved' && profileStatus !== 'completed') {
      actions.push({ text: '完善资料', event: 'profile', variant: 'secondary' })
    }
    if (actions.length === 0) {
      actions.push({ text: '开始寻找', event: 'discover', variant: 'primary' })
    }
    return actions
  },

  // ==================== 事件处理 ====================

  onBannerChange(e) {
    this.setData({ currentBannerIndex: e.detail.current })
  },

  onBannerTap(e) {
    const { targetType, targetValue } = e.currentTarget.dataset.item
    if (targetType === 'activity' && targetValue) {
      wx.navigateTo({ url: `/pages/activity-detail/activity-detail?id=${targetValue}` })
    } else if (targetType === 'matchmaker') {
      wx.navigateTo({ url: '/pages/matchmaker/matchmaker' })
    } else {
      const routes = { matchmaker: '/pages/matchmaker/matchmaker', counseling: '/pages/counseling-intro/counseling-intro', premarital: '/pages/premarital-intro/premarital-intro', service_location: '/pages/service-station/service-station', article: '/pages/content-detail/content-detail', internal_page: targetValue }
      const url = routes[targetType]
      if (url && /^\/pages\//.test(url)) wx.navigateTo({ url })
    }
  },

  onEntryTap(e) {
    const { code, enabled, targetPage } = e.currentTarget.dataset.entry
    if (!enabled) {
      wx.showToast({ title: e.currentTarget.dataset.entry.disabledReason || '暂不可使用此功能', icon: 'none' })
      return
    }
    if (targetPage === '/pages/discover/discover' || targetPage === '/pages/activity/activity') wx.switchTab({ url: targetPage })
    else if (targetPage?.startsWith('/pages/')) wx.navigateTo({ url: targetPage })
  },

  onViewDetail(e) {
    const userId = e.detail?.userId || e.currentTarget.dataset?.userId
    if (userId) wx.navigateTo({ url: `/pages/profile-detail/profile-detail?id=${userId}` })
  },

  async onLike(e) {
    const userId = e.detail?.userId
    if (!userId || this.data.actionLoadingUserId) return
    this.setData({ actionLoadingUserId: userId })
    try {
      const result = await matchStore.like(userId)
      this.setData({ recommendations: this.data.recommendations.filter((item) => item.userId !== userId) })
      if (result?.mutualMatch) {
        appStore.toastSuccess('双向喜欢！可以开始聊天了')
        if (result.matchedConversationId) {
          wx.navigateTo({ url: `/pages/chat/chat?id=${result.matchedConversationId}` })
        }
      } else {
        appStore.toastSuccess('已表达喜欢')
      }
    } catch (err) {
      appStore.toastError(err instanceof Error ? err.message : '操作失败')
    } finally {
      this.setData({ actionLoadingUserId: '' })
    }
  },

  async onPass(e) {
    const userId = e.detail?.userId
    if (!userId || this.data.actionLoadingUserId) return
    this.setData({ actionLoadingUserId: userId })
    try {
      await matchStore.pass(userId)
      this.setData({ recommendations: this.data.recommendations.filter((item) => item.userId !== userId) })
      appStore.toastSuccess('已略过')
    } catch (err) {
      appStore.toastError(err instanceof Error ? err.message : '操作失败')
    } finally {
      this.setData({ actionLoadingUserId: '' })
    }
  },

  onEmptyAction(e) {
    const event = e.currentTarget.dataset.event
    switch (event) {
      case 'login':
        wx.reLaunch({ url: '/pages/login/login' })
        break
      case 'discover':
        wx.switchTab({ url: '/pages/discover/discover' })
        break
      case 'matchmaker':
        wx.navigateTo({ url: '/pages/matchmaker/matchmaker' })
        break
      case 'preference':
        wx.navigateTo({ url: '/pages/profile-preference/profile-preference' })
        break
      case 'local-eligibility':
        wx.navigateTo({ url: '/pages/local-eligibility/local-eligibility' })
        break
      case 'profile':
        wx.navigateTo({ url: '/pages/profile-basic/profile-basic' })
        break
    }
  },

  onResume() {
    wx.navigateTo({ url: '/pages/relationship-status/relationship-status' })
  },

  onSeeMore() { wx.switchTab({ url: '/pages/discover/discover' }) },
  onSeeAllActivities() { wx.switchTab({ url: '/pages/activity/activity' }) },
  onActivityTap(e) {
    const id = e.currentTarget.dataset.id
    if (id) wx.navigateTo({ url: `/pages/activity-detail/activity-detail?id=${id}` })
  },
  onStationTap() {
    wx.navigateTo({ url: '/pages/service-station/service-station' })
  },
  onServiceTap(e) {
    const type = e.currentTarget.dataset.type
    switch (type) {
      case 'matchmaker': wx.navigateTo({ url: '/pages/matchmaker/matchmaker' })
        break
      case 'counseling':
        wx.navigateTo({ url: '/pages/counseling-intro/counseling-intro' })
        break
      case 'premarital':
        wx.navigateTo({ url: '/pages/premarital-intro/premarital-intro' })
        break
    }
  },
  onSafetyTap() {
    wx.navigateTo({ url: '/pages/anti-fraud/anti-fraud' })
  },
  onArticleTap(e) { wx.navigateTo({ url: `/pages/content-detail/content-detail?id=${e.currentTarget.dataset.id}` }) },
  onMessages() { wx.switchTab({ url: '/pages/messages/messages' }) },

  formatDate(timestamp) {
    if (!timestamp) return ''
    const d = new Date(timestamp)
    return `${d.getMonth() + 1}月${d.getDate()}日 ${String(d.getHours()).padStart(2, '0')}:${String(d.getMinutes()).padStart(2, '0')}`
  },
})