/**
 * Soul创业派对 - 代付详情页
 * 好友打开后看到订单信息，点击「帮他付款」完成代付
 */
const app = getApp()

Page({
  data: {
    statusBarHeight: 44,
    requestSn: '',
    detail: null,
    loading: true,
    paying: false,
    isInitiator: false // 是否发起人，发起人看到「分享给好友」UI，好友看到「帮他付款」
  },

  onLoad(options) {
    this.setData({ statusBarHeight: app.globalData.statusBarHeight || 44 })
    const requestSn = (options.requestSn || '').trim()
    if (!requestSn) {
      wx.showToast({ title: '代付链接无效', icon: 'none' })
      setTimeout(() => wx.switchTab({ url: '/pages/index/index' }), 1500)
      return
    }
    this.setData({ requestSn })
    this.loadDetail()
  },

  async loadDetail() {
    const { requestSn } = this.data
    if (!requestSn) return
    this.setData({ loading: true })
    try {
      const res = await app.request(`/api/miniprogram/gift-pay/detail?requestSn=${encodeURIComponent(requestSn)}`)
      if (res && res.success) {
        const myId = app.globalData.userInfo?.id || ''
        const isInitiator = !!myId && res.initiatorUserId === myId
        this.setData({ detail: res, loading: false, isInitiator })
      } else {
        this.setData({ loading: false })
        wx.showToast({ title: res?.error || '加载失败', icon: 'none' })
      }
    } catch (e) {
      this.setData({ loading: false })
      wx.showToast({ title: '加载失败', icon: 'none' })
    }
  },

  async doPay() {
    if (!app.globalData.isLoggedIn || !app.globalData.userInfo) {
      wx.showToast({ title: '请先登录', icon: 'none' })
      setTimeout(() => wx.switchTab({ url: '/pages/my/my' }), 1500)
      return
    }
    const openId = app.globalData.openId || ''
    if (!openId) {
      wx.showToast({ title: '请先完成微信授权', icon: 'none' })
      return
    }
    const { requestSn, detail } = this.data
    if (!requestSn || !detail) return

    this.setData({ paying: true })
    wx.showLoading({ title: '创建订单中...', mask: true })
    try {
      const res = await app.request({
        url: '/api/miniprogram/gift-pay/pay',
        method: 'POST',
        data: {
          requestSn,
          openId,
          userId: app.globalData.userInfo?.id || ''
        }
      })
      wx.hideLoading()
      if (!res || !res.success || !res.data?.payParams) {
        throw new Error(res?.error || '创建订单失败')
      }
      const payParams = res.data.payParams
      payParams._orderSn = res.data.orderSn

      await new Promise((resolve, reject) => {
        wx.requestPayment({
          ...payParams,
          signType: payParams.signType || 'MD5',
          success: resolve,
          fail: reject
        })
      })

      wx.showToast({ title: '代付成功', icon: 'success' })
      this.setData({ paying: false })
      setTimeout(() => {
        wx.navigateBack({ fail: () => wx.switchTab({ url: '/pages/index/index' }) })
      }, 1500)
    } catch (e) {
      this.setData({ paying: false })
      if (e.errMsg && e.errMsg.includes('cancel')) {
        wx.showToast({ title: '已取消支付', icon: 'none' })
      } else {
        wx.showToast({ title: e.message || e.error || '支付失败', icon: 'none' })
      }
    }
  },

  goBack() {
    app.goBackOrToHome()
  },

  onShareAppMessage() {
    const { requestSn } = this.data
    return {
      title: '好友请你帮忙代付 - Soul创业派对',
      path: requestSn ? `/pages/gift-pay/detail?requestSn=${requestSn}` : '/pages/gift-pay/detail'
    }
  }
})