const app = getApp()
const { trackClick } = require('../../utils/trackClick')

Page({
  data: {
    statusBarHeight: 0,
    balance: 0,
    balanceText: '0.00',
    totalRecharged: '0.00',
    totalGifted: '0.00',
    totalRefunded: '0.00',
    transactions: [],
    loading: true,
    rechargeAmounts: [10, 30, 50, 1000],
    selectedAmount: 30,
    auditMode: false,
  },

  onLoad() {
    this.setData({
      statusBarHeight: app.globalData.statusBarHeight || 44,
      auditMode: app.globalData.auditMode || false,
    })
    this.loadBalance()
    this.loadTransactions()
  },

  onShow() {
    this.setData({ auditMode: app.globalData.auditMode || false })
  },

  async loadBalance() {
    if (!app.globalData.isLoggedIn || !app.globalData.userInfo) return
    const userId = app.globalData.userInfo.id
    try {
      const res = await app.request({ url: `/api/miniprogram/balance?userId=${userId}`, silent: true })
      if (res && res.data) {
        this.setData({
          balance: res.data.balance || 0,
          balanceText: (res.data.balance || 0).toFixed(2),
          totalRecharged: (res.data.totalRecharged || 0).toFixed(2),
          totalGifted: (res.data.totalGifted || 0).toFixed(2),
          totalRefunded: (res.data.totalRefunded || 0).toFixed(2),
          loading: false,
        })
      }
    } catch (e) {
      this.setData({ loading: false })
    }
  },

  async loadTransactions() {
    if (!app.globalData.isLoggedIn || !app.globalData.userInfo) return
    const userId = app.globalData.userInfo.id
    try {
      const res = await app.request({ url: `/api/miniprogram/balance/transactions?userId=${userId}`, silent: true })
      if (res && res.data) {
        const list = (res.data || []).map(t => ({
          ...t,
          amountText: (t.amount || 0).toFixed(2),
          amountSign: (t.amount || 0) >= 0 ? '+' : '',
          description: t.description || (t.type === 'recharge' ? '充值' : t.type === 'gift' ? '赠送' : t.type === 'refund' ? '退款' : t.type === 'consume' ? '阅读消费' : '其他'),
        }))
        this.setData({ transactions: list })
      }
    } catch (e) {
      console.warn('[Wallet] load transactions failed', e)
    }
  },

  selectAmount(e) {
    trackClick('wallet', 'tab_click', '选择金额' + (e.currentTarget.dataset.amount || ''))
    this.setData({ selectedAmount: parseInt(e.currentTarget.dataset.amount) })
  },

  async handleRecharge() {
    trackClick('wallet', 'btn_click', '充值')
    if (!app.globalData.isLoggedIn || !app.globalData.userInfo) {
      wx.showToast({ title: '请先登录', icon: 'none' })
      return
    }
    const userId = app.globalData.userInfo.id
    const amount = this.data.selectedAmount

    let openId = app.globalData.openId
    if (!openId) {
      openId = await app.getOpenId()
    }
    if (!openId) {
      wx.showToast({ title: '获取支付凭证失败，请重新登录', icon: 'none', duration: 2500 })
      return
    }

    wx.showLoading({ title: '创建订单...' })
    try {
      const res = await app.request({
        url: '/api/miniprogram/balance/recharge',
        method: 'POST',
        data: { userId, amount }
      })
      wx.hideLoading()
      if (res && res.data && res.data.orderSn) {
        const payRes = await app.request({
          url: '/api/miniprogram/pay',
          method: 'POST',
          data: {
            openId: openId,
            productType: 'balance_recharge',
            productId: res.data.orderSn,
            amount: amount,
            description: `余额充值 ¥${amount}`,
            userId: userId,
          }
        })
        const params = (payRes && payRes.data && payRes.data.payParams) ? payRes.data.payParams : (payRes && payRes.payParams ? payRes.payParams : null)
        if (params) {
          wx.requestPayment({
            ...params,
            success: async () => {
              // Confirm the recharge
              await app.request({
                url: '/api/miniprogram/balance/recharge/confirm',
                method: 'POST',
                data: { orderSn: res.data.orderSn }
              })
              wx.showToast({ title: '充值成功', icon: 'success' })
              this.loadBalance()
              this.loadTransactions()
            },
            fail: () => {
              wx.showToast({ title: '支付取消', icon: 'none' })
            }
          })
        } else {
          wx.showToast({ title: '创建支付失败', icon: 'none' })
        }
      }
    } catch (e) {
      wx.hideLoading()
      console.error('[Wallet] recharge error:', e)
      wx.showToast({ title: '充值失败：' + (e.message || e.errMsg || '网络异常'), icon: 'none', duration: 3000 })
    }
  },

  async handleRefund() {
    trackClick('wallet', 'btn_click', '退款')
    if (this.data.balance <= 0) {
      wx.showToast({ title: '余额为零', icon: 'none' })
      return
    }
    const userId = app.globalData.userInfo.id
    const balance = this.data.balance

    wx.showModal({
      title: '余额退款',
      content: `退回全部余额 ¥${balance.toFixed(2)}\n\n退款将在1-3个工作日内原路返回`,
      confirmText: '确认退款',
      cancelText: '取消',
      success: async (res) => {
        if (!res.confirm) return
        wx.showLoading({ title: '处理中...' })
        try {
          const result = await app.request({
            url: '/api/miniprogram/balance/refund',
            method: 'POST',
            data: { userId, amount: balance }
          })
          wx.hideLoading()
          if (result && result.data) {
            wx.showToast({ title: result.data.message || '退款成功', icon: 'success' })
            this.loadBalance()
            this.loadTransactions()
          }
        } catch (e) {
          wx.hideLoading()
          wx.showToast({ title: '退款失败', icon: 'none' })
        }
      }
    })
  },

  goBack() {
    wx.navigateBack()
  },
})