const { post, login } = require('../../utils/pay-api.js')

// 同购买页：用上次的身份当初始值，退款按钮不会先冒出来再消失
const cachedIsAdmin = Boolean(wx.getStorageSync('isAdmin'))

function formatTime(timestamp) {
  const d = new Date(timestamp)
  const pad = (n) => (n < 10 ? '0' + n : '' + n)
  return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())} ${pad(d.getHours())}:${pad(d.getMinutes())}`
}

Page({
  data: {
    loading: false,
    list: [],
    error: '',
    isIos: false,
    isAdmin: cachedIsAdmin, // 退款目前是管理员功能
  },

  // 每次切到这一页都刷新一次，买完回来看得到
  onShow() {
    // iPhone 上买的订单只能用户自己去 App Store 申请退款，按钮就不显示了
    this.setData({ isIos: wx.getSystemInfoSync().platform === 'ios' })
    this.load()
  },

  async load() {
    this.setData({ loading: true, error: '' })
    try {
      const code = await login()
      const data = await post('/pay/my', { code })
      wx.setStorageSync('isAdmin', Boolean(data.isAdmin))
      this.setData({
        isAdmin: Boolean(data.isAdmin),
        list: (data.list || []).map((item) => Object.assign({}, item, { timeText: formatTime(item.deliveredAt) })),
      })
    } catch (err) {
      this.setData({ error: err.message })
    } finally {
      this.setData({ loading: false })
    }
  },

  copyCode(e) {
    wx.setClipboardData({ data: e.currentTarget.dataset.code })
  },

  onRefund(e) {
    const outTradeNo = e.currentTarget.dataset.order
    wx.showModal({
      title: '申请退款',
      content: '退款后这张激活码会作废，确定要退吗？',
      confirmText: '退款',
      cancelText: '再想想',
      success: (res) => {
        if (res.confirm) this.doRefund(outTradeNo)
      },
    })
  },

  async doRefund(outTradeNo) {
    wx.showLoading({ title: '退款中', mask: true })
    try {
      const code = await login()
      await post('/pay/refund', { outTradeNo, code })
      wx.showToast({ title: '退款已发起', icon: 'none' })
      await this.load()
    } catch (err) {
      wx.showToast({ title: err.message, icon: 'none', duration: 3000 })
    } finally {
      wx.hideLoading()
    }
  },

  onPullDownRefresh() {
    this.load().then(() => wx.stopPullDownRefresh())
  },
})