const app = getApp()
const util = require('../../../utils/util')

Page({
  data: {
    records: [],
    loading: false,
    page: 1,
    pageSize: 20,
    hasMore: true
  },

  onLoad() {
    this.fetchRecords()
  },

  onShow() {
    // 门店切换后刷新数据
    if (app.globalData.storeChanged) {
      app.globalData.storeChanged = false
      this.setData({ page: 1, hasMore: true, records: [] })
      this.fetchRecords()
    }
  },

  onPullDownRefresh() {
    this.setData({ page: 1, hasMore: true })
    this.fetchRecords().then(() => {
      wx.stopPullDownRefresh()
    })
  },

  onReachBottom() {
    if (this.data.hasMore && !this.data.loading) {
      this.loadMore()
    }
  },

  async fetchRecords() {
    this.setData({ loading: true })

    try {
      const res = await app.request('/api/points/records', {
        page: this.data.page,
        pageSize: this.data.pageSize
      })

      const records = (res.data.list || []).map(record =>
        Object.assign({}, record, {
          createdAt: util.formatDate(record.createdAt)
        })
      )

      this.setData({
        records: this.data.page === 1 ? records : this.data.records.concat(records),
        hasMore: records.length >= this.data.pageSize
      })
    } catch (e) {
      console.error('获取积分记录失败:', e)
    } finally {
      this.setData({ loading: false })
    }
  },

  loadMore() {
    this.setData({ page: this.data.page + 1 })
    this.fetchRecords()
  }
})