const { request } = require('../api/request')
const { debounce } = require('../utils/util')

module.exports = {
  data() {
    return {
      pagenum: 1,
      pagesize: 20,
      finished: false, // 所有数据是否加载完
      isRefresh: false, // 是否下拉刷新
      isFetchLock: false, // 接口调用加锁
      listData: [],
      freshing: false
    }
  },
  methods: {
    handleKeyWords: debounce(function (event) {
      const { formkey } = event.target.dataset

      if (formkey) {
        this.setData({
          [`searchForm.${formkey}`]: event.detail.value
        }, () => {
          this.refreshOrderList()
        })
      }
    }, 2000),
    async fetchOrderList() {
      const that = this
      const isRefresh = that.data.isRefresh

      if (that.data.finished) {
        return
      }

      if (that.data.isFetchLock) {
        return
      }

      that.setData({
        isFetchLock: true
      })
      try {
        const { status, data, msg } = await request({
          url: that.data.listUrl,
          method: 'POST',
          data: {
            'page': that.data.pagenum,
            'page_size': that.data.pagesize,
            ...that.data.searchForm
          },
          showLoading: false
        })
        if (status) {
          const { list } = data
          if (Array.isArray(list)) {
            const _list = isRefresh ? [].concat(list) : that.data.listData.concat(list)

            that.setData({
              listData: _list,
              finished: list.length < that.data.pagesize,
              isRefresh: false,
              isFetchLock: false,
              pagenum: that.data.pagenum + 1
            })
          }
        } else {
          wx.showToast({
            title: msg,
            icon: 'none'
          })
        }
      } catch (e) {}
      if (that.data.freshing) {
        that.setData({
          freshing: false
        })
      }
      if (isRefresh && wx.stopPullDownRefresh) {
        wx.stopPullDownRefresh()
      }
    },
    refreshOrderList() {
      this.setData({
        pagenum: 1,
        pagesize: 20,
        finished: false,
        isRefresh: true,
        isFetchLock: false
      }, () => {
        this.fetchOrderList()
      })
    }
  }
}