import { request } from '../../utils/request'
import { QuotaItem, UserInfo, GoodsItem, QuotaFlowItem, PagedResult, VirtualPayResult, OrderItem } from '../../types/models'
import { QUOTA_NAMES, GoodsType, GOODS_TYPE_NAMES } from '../../utils/config'
import { fenToYuan, formatDate, formatDateTime } from '../../utils/format'
import { normalizePaged } from '../../utils/paged'

const GOODS_ICONS: Record<number, string> = {
  [GoodsType.MEMBER]: 'icon-crown',
  [GoodsType.UPLOAD]: 'icon-camera',
  [GoodsType.AI]: 'icon-sparkles',
  [GoodsType.CLOSET_SHARE]: 'icon-hanger',
  [GoodsType.OUTFIT_SHARE]: 'icon-shirt',
}

const GOODS_FILTERS = [
  { name: '全部', value: 0 },
  { name: '会员包', value: 1 },
  { name: '上传包', value: 2 },
  { name: 'AI 推荐包', value: 3 },
  { name: '衣柜分享包', value: 4 },
  { name: '搭配分享包', value: 5 },
]

type PayPlatform = 'android' | 'ios' | 'harmony' | 'windows'

// 归一化平台：后端仅接受 android/ios/harmony/windows，devtools/mac 等调试环境默认按 android 处理
function normalizePlatform(): PayPlatform {
  let p = 'android'
  try {
    p = wx.getSystemInfoSync().platform
  } catch (e) {
    // 获取失败时回退 android，避免请求体缺失导致参数校验失败
  }
  if (p === 'ios' || p === 'harmony' || p === 'windows') return p
  return 'android'
}

Page({
  data: {
    view: 'mall' as 'mall' | 'flow',
    userInfo: {} as UserInfo,
    isVip: false,
    vipExpireText: '',
    quotas: [] as QuotaItem[],
    goodsFilters: GOODS_FILTERS,
    activeFilter: 0,
    goods: [] as GoodsItem[],
    flowList: [] as QuotaFlowItem[],
    goodsIcons: GOODS_ICONS,
    orderVisible: false,
    orderGoods: null as GoodsItem | null,
    submitting: false, // 下单防连点：连点「立即支付」会重复创建虚拟支付订单
    loading: true,
  },

  onLoad(query: Record<string, string>) {
    if (query.tab === 'flow') this.setData({ view: 'flow' })
  },

  onShow() {
    this.fetchUser()
    this.fetchQuota()
    this.fetchGoods()
    if (this.data.view === 'flow') this.fetchFlow()
  },

  fetchUser() {
    request<UserInfo>({ url: '/user/info', showError: false })
      .then((user) => {
        const isVip = user.vip_type !== 1
        this.setData({
          userInfo: user,
          isVip,
          vipExpireText: isVip && user.vip_expire ? `有效期至 ${formatDate(user.vip_expire)}` : '',
        })
      })
      .catch(() => {})
  },

  fetchQuota() {
    request<{ quotas: QuotaItem[] }>({ url: '/quota/info', showError: false, silentAuth: true })
      .then((res) => {
        const quotas = res.quotas.map((q) => ({
          ...q,
          _name: QUOTA_NAMES[q.quota_type] || '额度',
          _percent: q.total > 0 ? Math.round((q.used / q.total) * 100) : 0,
        }))
        this.setData({ quotas })
      })
      .catch(() => {})
  },

  fetchGoods() {
    const params: Record<string, any> = { page: 1, page_size: 50 }
    const filter = this.data.activeFilter
    if (filter > 0) params.goods_type = filter
    request<PagedResult<GoodsItem>>({ url: '/goods', data: params, auth: false })
      .then((res) => {
        const goods = normalizePaged<GoodsItem>(res).list.map((g) => ({
          ...g,
          _icon: GOODS_ICONS[g.goods_type] || 'icon-crown',
          _typeName: GOODS_TYPE_NAMES[g.goods_type] || '',
          _priceText: fenToYuan(g.discount_price),
          _originText: fenToYuan(g.price),
        }))
        this.setData({ goods, loading: false })
      })
      .catch(() => this.setData({ loading: false }))
  },

  fetchFlow() {
    request<PagedResult<QuotaFlowItem>>({ url: '/quota/flow', data: { page: 1, page_size: 50 } })
      .then((res) => {
        const list = normalizePaged<QuotaFlowItem>(res).list.map((it) => ({
          ...it,
          _time: formatDateTime(it.created_at),
          _sign: it.change_num > 0 ? `+${it.change_num}` : `${it.change_num}`,
          _name: QUOTA_NAMES[it.quota_type] || '额度',
        }))
        this.setData({ flowList: list })
      })
      .catch(() => {})
  },

  onGoodsFilter(e: WechatMiniprogram.TouchEvent) {
    const index = Number(e.currentTarget.dataset.index)
    if (index === this.data.activeFilter) return
    this.setData({ activeFilter: index, loading: true })
    this.fetchGoods()
  },

  onTapMember() {
    this.setData({ activeFilter: 1, loading: true })
    this.fetchGoods()
  },

  onSwitchMall() {
    this.setData({ view: 'mall' })
  },
  onSwitchFlow() {
    this.setData({ view: 'flow' })
    this.fetchFlow()
  },

  onBuy(e: WechatMiniprogram.TouchEvent) {
    const goods = e.currentTarget.dataset.goods as GoodsItem
    this.setData({ orderGoods: goods, orderVisible: true })
  },

  onCloseOrder() {
    this.setData({ orderVisible: false })
  },
  noop() {},

  confirmPay() {
    if (this.data.submitting) return
    if (!this.data.orderGoods) return

    this.setData({ submitting: true })
    request<VirtualPayResult>({
      url: '/order/virtual',
      method: 'POST',
      data: {
        goods_code: this.data.orderGoods.goods_code,
        platform: normalizePlatform(),
      },
    })
      .then((res) => {
        this.setData({ orderVisible: false, submitting: false })
        this.doPayment(res)
      })
      .catch(() => this.setData({ submitting: false }))
  },

  doPayment(res: VirtualPayResult) {
    wx.requestVirtualPayment({
      signData: res.sign_data,
      paySig: res.pay_sig,
      signature: res.signature,
      mode: 'short_series_goods',
      success: () => {
        // 拉起成功仅代表进入支付页，最终到账以后端发货推送为准，轮询订单确认
        this.pollOrder(res.order_no)
      },
      fail: () => {},
    })
  },

  pollOrder(orderNo: string) {
    this.clearPayTimer()
    let count = 0
    ;(this as any).payTimer = setInterval(() => {
      count++
      request<PagedResult<OrderItem>>({ url: '/order', data: { page: 1, page_size: 50 }, showError: false })
        .then((res) => {
          const order = normalizePaged<OrderItem>(res).list.find((it) => it.order_no === orderNo)
          if (order && order.order_status === 2) {
            this.clearPayTimer()
            wx.showToast({ title: '支付成功', icon: 'success' })
            this.fetchQuota()
            this.fetchUser()
          } else if (order && (order.order_status === 3 || order.order_status === 4 || order.order_status === 5)) {
            this.clearPayTimer()
            const msg = order.order_status === 5 ? '订单已退款' : '订单未支付成功'
            wx.showToast({ title: msg, icon: 'none' })
          } else if (count >= 10) {
            this.finishPayTimeout()
          }
        })
        .catch(() => {
          if (count >= 10) this.finishPayTimeout()
        })
    }, 1500)
  },

  clearPayTimer() {
    const timer = (this as any).payTimer
    if (timer) {
      clearInterval(timer)
      ;(this as any).payTimer = null
    }
  },

  finishPayTimeout() {
    this.clearPayTimer()
    wx.showToast({ title: '到账可能有延迟，请稍后查看', icon: 'none' })
    this.fetchQuota()
    this.fetchUser()
  },

  onUnload() {
    // 离开商城后停止支付轮询，避免对已卸载页面 setData
    this.clearPayTimer()
  },
})