// pages/stock/index.js
import { getPreferList } from "../../../../pages/api/moment"
const event = require('../../../../utils/event')
const app = getApp()

Component({
  options: {
    addGlobalClass: true,
    multipleSlots: true
  },
  /**
   * 页面的初始数据
   */
  data: {
    dev: app.globalData.dev,
    firstShow: false,
    height: app.globalData.safeFragmentHeight - 90,
    momentList: [],
    requesting: false,
    finished: false,
    form: { categoryId: 2,  pageNum: 1,
      pageSize:15 }
  },
  lifetimes: {
    // 生命周期函数，可以为函数，或一个在methods段中定义的方法名
    attached: function () {
      event.on('EventMessage', this, this.onEvent)
    },
    detached: function () {
      event.remove('EventMessage', this)
    }
  },
  methods: {
    onRestart: function () {
      if (!this.data.firstShow) {
        this.setData({ dev: app.globalData.dev, height: app.globalData.safeFragmentHeight - 90 })
        this.onRefreshList()
      }
      this.data.firstShow = true
    },
    onEvent: function (message) {
      if (message.what == 572) {
        // 帖子发布刷新
        this.onRefreshList()
      }
    },
    //*************************************************momentList************************************************//
    onRefreshList: function () {
      if (this.data.requesting) {
        return
      }
      this.setData({ momentList: [], ['form.pageNum']: 1, finished: false })
      this.fetchMomentList()
    },
    fetchMomentList: function(){
      if (this.data.requesting || this.data.finished) {
        return
      }
      this.data.requesting = true
      getPreferList(this.data.form).then(result => {
        if (result.data.records.length) {
          var respList = result.data.records
          let nowList = `momentList[${this.data.momentList.length}]`
          var num = this.data.form.pageNum
          var finished = this.data.form.pageNum >= result.data.pages
          this.setData({
            [nowList]: respList,
            ['form.pageNum']: (num + 1),
            finished,
            requesting: false
          })
        } else {
          this.setData({ finished: true,  requesting: false })
        }
      }).catch(err => {
        this.setData({ requesting: false })
      })
    }
  }
})