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

Page({
  data: {
    hasUserInfo: false,
    pageToken: 0,
    notificationDatas: [],
    loading: true
  },

  loadNotificationData: function (refresh) {
    this.setData({
      loading: true
    })
    wx.showNavigationBarLoading()
    wx.cloud.callFunction({
      name: 'listNotifications',
      data: {
        page_token: refresh ? 0 : this.data.pageToken,
        page_size: 20
      }
    }).then(res => {
      wx.hideNavigationBarLoading()
      wx.stopPullDownRefresh()
      if (res.result.status !== 'OK') {
        wx.showToast({
          title: res.result.errMsg,
          icon: 'none'
        })
        return
      }
      for (let i = 0; i < res.result.list.length; i++) {
        res.result.list[i].message = util.dbToMsg(res.result.list[i].message)
      }
      this.setData({
        notificationDatas: refresh ? res.result.list : this.data.notificationDatas.concat(res.result.list),
        pageToken: res.result.next_page_token,
        loading: false
      })
    })
  },

  onShow: function () {
    if (!this.data.hasUserInfo && app.globalData.hasUserInfo) {
      this.loadNotificationData(true)
    } else {
      this.setData({
        loading: false
      })
    }
    this.setData({
      hasUserInfo: app.globalData.hasUserInfo
    })
  },

  onPullDownRefresh: function () {
    if (this.data.loading) {
      return
    }
    this.setData({
      hasUserInfo: app.globalData.hasUserInfo
    })
    if (this.data.hasUserInfo) {
      this.loadNotificationData(true)
    }
  },

  onReachBottom: function () {
    if (this.data.loading) {
      return
    }
    this.setData({
      hasUserInfo: app.globalData.hasUserInfo
    })
    if (this.data.hasUserInfo) {
      this.loadNotificationData(false)
    }
  },
})