const { request, ensureLogin, cents } = require('../../utils/api.js')

Page({
  data: {
    loading: false,
    errorMessage: '',
    profile: null,
    recentLedger: [],
  },

  onLoad() {
    this.loadProfile()
  },

  async loadProfile() {
    this.setData({ loading: true, errorMessage: '' })
    try {
      await ensureLogin()
      const response = await request('/profile')
      const profile = formatProfile(response.data)
      this.setData({
        profile,
        recentLedger: (response.data.recentLedger || []).map(formatLedger),
      })
    } catch (error) {
      this.setData({ errorMessage: error.message || '个人中心加载失败' })
    } finally {
      this.setData({ loading: false })
    }
  },

  openOrders() {
    wx.navigateTo({ url: '/pages/orders/list' })
  },
})

function formatProfile(profile) {
  return {
    ...profile,
    registeredText: formatDate(profile.registeredAt),
    lastLoginText: profile.lastLoginAt ? formatDate(profile.lastLoginAt) : '暂无',
    wallet: {
      ...profile.wallet,
      cashText: cents(profile.wallet.cashBalanceCents),
      giftText: cents(profile.wallet.giftBalanceCents),
      totalText: cents(profile.wallet.totalBalanceCents),
    },
    benefits: {
      ...profile.benefits,
      packageAmountText: cents(profile.benefits.packageAmountCents),
    },
    recharge: {
      ...profile.recharge,
      creditedText: cents(profile.recharge.creditedRechargeCents),
      giftedText: cents(profile.recharge.giftedRechargeCents),
    },
    orders: {
      ...profile.orders,
      paidAmountText: cents(profile.orders.paidAmountCents),
    },
  }
}

function formatLedger(item) {
  return {
    ...item,
    deltaText: `${signedCents(item.cashDeltaCents)} / ${signedCents(item.giftDeltaCents)}`,
    balanceText: `${cents(item.cashBalanceAfterCents)} / ${cents(item.giftBalanceAfterCents)}`,
    createdText: formatDate(item.createdAt),
  }
}

function signedCents(value) {
  const amount = Number(value || 0)
  return `${amount >= 0 ? '+' : '-'}${cents(Math.abs(amount))}`
}

function formatDate(value) {
  const date = new Date(value)
  const pad = (input) => String(input).padStart(2, '0')
  return `${date.getFullYear()}-${pad(date.getMonth() + 1)}-${pad(date.getDate())} ${pad(date.getHours())}:${pad(date.getMinutes())}`
}