/**
 * Soul创业派对 - 订单与代付（消费流水 + 我发起的代付，按时间合并）
 */
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 giftPayStatusLabel(status) {
  const s = String(status || '').toLowerCase()
  if (s === 'pending' || s === 'pending_pay') return '待支付'
  if (s === 'paid') return '已支付'
  if (s === 'refunded') return '已退款'
  if (s === 'cancelled') return '已取消'
  if (s === 'expired') return '已过期'
  return String(status || '').trim() || '--'
}

function parseIsoMs(iso) {
  const t = new Date(iso || 0).getTime()
  return Number.isFinite(t) ? t : 0
}

function mapGiftPayToRow(item) {
  const requestSn = String(item.requestSn || '').trim()
  if (!requestSn) return null
  const t = parseIsoMs(item.createdAt)
  const amt = Number(item.amount)
  const amountStr = Number.isFinite(amt) ? amt.toFixed(2) : '--'
  const titleRaw = cleanSingleLineField(String(item.description || '').trim())
  const title = titleRaw || '代付'
  const st = String(item.status || '').toLowerCase()
  const stLabel = giftPayStatusLabel(item.status)
  const gpPending = st === 'pending' || st === 'pending_pay'
  const gpPaid = st === 'paid'
  return {
    rowKey: `gp_${requestSn}`,
    kind: 'giftPay',
    requestSn,
    title,
    subLine: `¥${amountStr} · ${stLabel} · ${formatShortDate(t)}`,
    actionLabel: '查看',
    gpPending,
    gpPaid,
    _sortMs: t,
  }
}

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/purchases/purchases', label: '查看' }
  }
  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_${t}`),
    kind: 'order',
    title,
    subLine: `¥${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 {
      let orderRows = []

      if (userId) {
        const orderRes = await app.request({
          url: `/api/miniprogram/orders?userId=${encodeURIComponent(userId)}`,
          silent: true,
        }).catch(() => null)
        if (orderRes && orderRes.success && Array.isArray(orderRes.data)) {
          orderRows = orderRes.data.map((item) => mapApiOrderToRow(item, bookFlat)).filter(Boolean)
        }
      }

      if (!orderRows.length) {
        const ids = [...(app.globalData.purchasedSections || [])].reverse()
        orderRows = 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}`,
            kind: 'order',
            title,
            subLine: `已解锁 · ${formatShortDate(t)}`,
            actionLabel: '阅读',
            nav: { kind: 'read', id, mid, label: '阅读' },
            _sortMs: t,
          }
        })
      }

      let giftRows = []
      if (userId && !app.globalData.auditMode) {
        const giftRes = await app
          .request(`/api/miniprogram/gift-pay/my-requests?userId=${encodeURIComponent(userId)}`, {
            silent: true,
          })
          .catch(() => null)
        if (giftRes && giftRes.success && Array.isArray(giftRes.list)) {
          giftRows = giftRes.list.map(mapGiftPayToRow).filter(Boolean)
        }
      }

      const merged = [...orderRows, ...giftRows].sort((a, b) => b._sortMs - a._sortMs)
      const stripped = merged.map(({ _sortMs, ...rest }) => rest)
      this.setData({ allRows: stripped, loading: false })
      this.applyDisplay(false)
    } catch (e) {
      console.error('加载订单失败:', e)
      this.setData({ allRows: [], loading: false })
      this.applyDisplay(false)
    }
  },

  onUnifiedRowTap(e) {
    const index = e.currentTarget.dataset.index
    const row = (this.data.displayRows || [])[index]
    if (!row) return
    if (row.kind === 'giftPay' && row.requestSn) {
      wx.navigateTo({
        url: `/pages/gift-pay/redemption-detail?requestSn=${encodeURIComponent(String(row.requestSn))}`,
      })
      return
    }
    if (!row.nav) return
    const { nav } = row
    if (nav.kind === 'read' && nav.id) {
      const q = nav.mid ? `mid=${nav.mid}` : `id=${nav.id}`
      wx.navigateTo({ url: `/pages/read/read?${q}` })
      return
    }
    if (nav.kind === 'page' && nav.path) {
      if (app.globalData.auditMode) {
        const block = { '/pages/vip/vip': true, '/pages/wallet/wallet': true }
        if (block[nav.path]) {
          wx.showToast({ title: '当前为体验版，暂无法访问', icon: 'none' })
          return
        }
      }
      wx.navigateTo({ url: nav.path })
      return
    }
    if (nav.kind === 'switchTab' && nav.path) {
      wx.switchTab({ url: nav.path })
    }
  },

  async onGiftPayCancel(e) {
    if (e && typeof e.stopPropagation === 'function') e.stopPropagation()
    const requestSn = e?.currentTarget?.dataset?.sn
    if (!requestSn) return
    const ok = await new Promise((r) => {
      wx.showModal({ title: '取消代付', content: '确定取消该代付请求？', success: (res) => r(res.confirm) })
    })
    if (!ok) return
    try {
      const res = await app.request({
        url: '/api/miniprogram/gift-pay/cancel',
        method: 'POST',
        data: { requestSn, userId: app.globalData.userInfo?.id },
      })
      if (res && res.success) {
        wx.showToast({ title: '已取消', icon: 'success' })
        this.loadOrders()
      } else {
        wx.showToast({ title: res?.error || '取消失败', icon: 'none' })
      }
    } catch (_) {
      wx.showToast({ title: '取消失败', icon: 'none' })
    }
  },

  onGiftPayShare(e) {
    if (e && typeof e.stopPropagation === 'function') e.stopPropagation()
    const requestSn = e?.currentTarget?.dataset?.sn
    if (!requestSn) return
    wx.navigateTo({
      url: `/pages/gift-pay/detail?requestSn=${encodeURIComponent(String(requestSn))}`,
    })
  },

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

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

  onShareTimeline() {
    const ref = app.getMyReferralCode()
    return { title: '卡若创业派对 - 订单与代付', query: ref ? `ref=${ref}` : '' }
  }
})