/**
 * Soul创业实验 - 订单页（已支付消费流水：章节/VIP/余额/代付等）
 */
const app = getApp()
const { cleanSingleLineField } = require('../../utils/contentParser.js')

const PAID_STATUSES = new Set(['paid', 'completed', 'success'])

function parseOrderTimeMs(o) {
  const raw = o.created_at || o.createdAt || o.pay_time || 0
  const t = new Date(raw).getTime()
  return Number.isFinite(t) ? t : 0
}

function formatShortDate(ms) {
  if (!ms) return '--'
  const d = new Date(ms)
  const m = (d.getMonth() + 1).toString().padStart(2, '0')
  const day = d.getDate().toString().padStart(2, '0')
  return `${m}-${day}`
}

function midForSection(sectionId, bookFlat) {
  const row = bookFlat.find((s) => s.id === sectionId)
  return row?.mid ?? row?.MID ?? 0
}

function classifyNav(productType, productId, mid) {
  const pt = String(productType || '').toLowerCase()
  if (pt === 'section' && productId) {
    return { kind: 'read', id: productId, mid: mid || 0, label: '阅读' }
  }
  if (pt === 'fullbook') {
    return { kind: 'switchTab', path: '/pages/chapters/chapters', label: '去目录' }
  }
  if (pt === 'vip') {
    return { kind: 'page', path: '/pages/vip/vip', label: '会员中心' }
  }
  if (pt === 'match') {
    return { kind: 'switchTab', path: '/pages/match/match', label: '找伙伴' }
  }
  if (pt === 'balance_recharge') {
    return { kind: 'page', path: '/pages/wallet/wallet', label: '余额' }
  }
  if (pt === 'gift_pay' || pt === 'gift_pay_batch') {
    return { kind: 'page', path: '/pages/gift-pay/list', label: '代付记录' }
  }
  if (productId && (/^\d+\.\d+/.test(productId) || productId.length > 0)) {
    return { kind: 'read', id: productId, mid: mid || 0, label: '阅读' }
  }
  return { kind: 'none', label: '--' }
}

function mapApiOrderToRow(item, bookFlat) {
  const status = String(item.status || '').toLowerCase()
  if (!PAID_STATUSES.has(status)) return null

  const pt = String(item.product_type || '').toLowerCase()
  const productId = String(item.product_id || item.section_id || '').trim()
  let mid = Number(item.section_mid ?? item.mid ?? item.MID ?? 0) || 0
  if (pt === 'section' && productId && !mid) mid = midForSection(productId, bookFlat)

  const titleRaw = cleanSingleLineField(item.product_name || '')
  const title =
    titleRaw ||
    (pt === 'balance_recharge' ? '余额充值' : productId ? `订单 ${productId}` : '消费记录')

  const amt = Number(item.amount)
  const amountStr = Number.isFinite(amt) ? amt.toFixed(2) : '--'
  const t = parseOrderTimeMs(item)
  const nav = classifyNav(pt, productId, mid)

  return {
    rowKey: String(item.order_sn || item.id || `o_${t}`),
    title,
    subLine: `¥${amountStr} · ${formatShortDate(t)}`,
    actionLabel: nav.label,
    nav,
    _sortMs: t
  }
}

Page({
  data: {
    statusBarHeight: 44,
    loading: true,
    allRows: [],
    displayRows: [],
    historyExpanded: false
  },

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

  onShow() {
    if (!this._purchasesFirstOnShowSkipped) {
      this._purchasesFirstOnShowSkipped = true
      return
    }
    if (app.globalData.isLoggedIn) this.loadOrders()
  },

  applyDisplay(expanded) {
    const all = this.data.allRows || []
    const display = expanded || all.length <= 5 ? all : all.slice(0, 5)
    this.setData({ displayRows: display, historyExpanded: !!expanded })
  },

  expandHistory() {
    if (this.data.historyExpanded) return
    this.applyDisplay(true)
  },

  async loadOrders() {
    this.setData({ loading: true })
    const bookFlat = Array.isArray(app.globalData.bookData) ? app.globalData.bookData : []
    const userId = app.globalData.userInfo?.id

    try {
      if (userId) {
        const res = await app.request({
          url: `/api/miniprogram/orders?userId=${encodeURIComponent(userId)}`,
          silent: true
        })
        if (res && res.success && Array.isArray(res.data)) {
          const rows = res.data
            .map((item) => mapApiOrderToRow(item, bookFlat))
            .filter(Boolean)
            .sort((a, b) => b._sortMs - a._sortMs)
            .map(({ _sortMs, ...rest }) => rest)
          this.setData({ allRows: rows, loading: false })
          this.applyDisplay(false)
          return
        }
      }
      const ids = [...(app.globalData.purchasedSections || [])].reverse()
      const rows = ids.map((id, index) => {
        const mid = midForSection(id, bookFlat)
        const row = bookFlat.find((s) => s.id === id)
        const title =
          cleanSingleLineField(
            row?.sectionTitle || row?.section_title || row?.title || row?.chapterTitle || ''
          ) || `章节 ${id}`
        const t = Date.now() - index * 86400000
        return {
          rowKey: `p_${id}_${index}`,
          title,
          subLine: `已解锁 · ${formatShortDate(t)}`,
          actionLabel: '阅读',
          nav: { kind: 'read', id, mid, label: '阅读' }
        }
      })
      this.setData({ allRows: rows, loading: false })
      this.applyDisplay(false)
    } catch (e) {
      console.error('加载订单失败:', e)
      this.setData({ allRows: [], loading: false })
      this.applyDisplay(false)
    }
  },

  onOrderRowTap(e) {
    const index = e.currentTarget.dataset.index
    const row = (this.data.displayRows || [])[index]
    if (!row || !row.nav) return
    const { nav } = row
    if (nav.kind === 'read' && nav.id) {
      const q = nav.mid ? `mid=${nav.mid}` : `id=${nav.id}`
      wx.navigateTo({ url: `/pages/read/read?${q}` })
      return
    }
    if (nav.kind === 'page' && nav.path) {
      wx.navigateTo({ url: nav.path })
      return
    }
    if (nav.kind === 'switchTab' && nav.path) {
      wx.switchTab({ url: nav.path })
    }
  },

  goBack() {
    getApp().goBackOrToHome()
  },

  onShareAppMessage() {
    const ref = app.getMyReferralCode()
    return {
      title: '卡若创业派对 - 购买记录',
      path: ref ? `/pages/purchases/purchases?ref=${ref}` : '/pages/purchases/purchases'
    }
  },

  onShareTimeline() {
    const ref = app.getMyReferralCode()
    return { title: '卡若创业派对 - 购买记录', query: ref ? `ref=${ref}` : '' }
  }
})