// pages/stock/index.js
const request = require('../../../utils/request') //导入模块
const util = require('../../../utils/util')
const storage = require('../../../utils/storage')
const math = require('../../../utils/math')
const event = require('../../../utils/event.js')
var wxCharts = require('../../../utils/wxcharts.js')
const app = getApp()
var lineChart = null
const colors = ['#FF4229', '#FFAD2A', '#297BFF', '#29FF46', '#AD29FF']

Component({
  options: {
    addGlobalClass: true,
    multipleSlots: true
  },
  /**
   * 页面的初始数据
   */
  data: {
    height: app.globalData.fragmentHeight - 100,
    hostList: [],
    chartList: null,
    momentList: [],
    requesting: false,
    finished: false,
    idList: '',
    form: {
      pageNum: 1
    }
  },
  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 () {
      this.setData({ height: app.globalData.fragmentHeight - 100 })
      event.on('EventMessage', this, this.onEvent)
    },
    detached: function () {
      event.remove('EventMessage', this)
    }
  },
  methods: {
    onRestart: function () {
      // this.fetchMessageNumber()
      if (!this.data.firstShow) {
        this.fetchHostList()
        this.fetchChartList()
        this.onRefreshList()
      }
      this.data.firstShow = true
    },
    onEvent: function (message) {
      if (message.what == 502) {
        this.fetchChartList()
      }
    },
     //***********************************fetchHostList*****************************************//
    fetchHostList: function(){
      request.get('/information-center/paper-bar/get/top-paper-bar-list').then(result => {
        //成功回调
        this.setData({ hostList: result.data })
      })
    },
    toHost: function(e){
      var item = this.data.hostList[e.currentTarget.dataset.index]
      wx.navigateTo({
        url: '/pages/moment/host-detail/index?id=' + item.id
      })
    },
    //***********************************fetchChartList*****************************************//
    fetchChartList: function(){
      var cateIds = storage.get('cateIdList' + app.globalData.userInfo.userId)
      if(!util.isEmpty(cateIds)){
        this.data.idList = cateIds
      }
      request.get('/information-center/getPaperCategoryPrice', {idList: this.data.idList}).then(result => {
        //成功回调
        if(result.data.length <= 0){
          return
        }
        var respList = result.data
        var categoriesList = []
        var serieList = []
        var min = Number.MAX_VALUE
        var max = 0
        for (let index = 0; index < respList.length; index++) {
          const element = respList[index]
          var dataList = []
          if(index == 0){
            element.list.forEach(item => {
              categoriesList.push(item.data.substring(5))
              var price = math.times(item.unitPrice, 1000)
              if(min > price){
                min = price
              }
              if(max < price){
                max = price
              }
              dataList.push(price)
            })
          } else {
            element.list.forEach(item => {
              var price = math.times(item.unitPrice, 1000)
              if(min > price){
                min = price
              }
              dataList.push(price)
            })
          }
          var series = {
            name: element.list[0].name,
            data: dataList,
            format: function (val, name) {
              return val + '元/吨'
            },
            color: colors[index]
          }
          serieList.push(series)
        }
        this.setData({ chartList: { categories: categoriesList, serieList: serieList } })
        // if(min < 50){
        //   min = 50
        // }
        this.initChart(min - 50, max + 50)
      })
    },
    touchHandler: function (e) {
      if(lineChart){
        lineChart.scrollStart(e)
      }
    },
    moveHandler: function (e) {
      if(lineChart){
        lineChart.scroll(e)
      }
    },
    touchEndHandler: function (e) {
      if(lineChart){
        lineChart.scrollEnd(e)
        lineChart.showToolTip(e, {
          format: function (item, category) {
            return category + ' ' + item.name + ':' + item.data
          }
        })
      }
    },
    initChart: function (min, max) {
      lineChart = new wxCharts({
        canvasId: 'lineChart',
        type: 'line',
        categories: this.data.chartList.categories,
        animation: false,
        title: { name: '纸品单价 (元/吨)' },
        series: this.data.chartList.serieList,
        xAxis: { disableGrid: false },
        yAxis: {
          // title: '纸品单价 (元/吨)',
          format: function (val) {
            return val;
          },
          min,
          max
        },
        width: 350,
        height: 200,
        dataLabel: false,
        dataPointShape: 'circle',
        enableScroll: true,
        extra: { lineStyle: 'curve' }
      }, this)
    },
     //*************************************************momentList************************************************//
    onRefreshList: function () {
      this.setData({
        momentList: [],
        ['form.pageNum']: 1,
        finished: false
      })
      this.fetchMomentList()
    },
    fetchMomentList: function(){
      if (this.data.requesting || this.data.finished) {
        return
      }
      this.data.requesting = true
      request.get('/information-center/get/prefer-post-list', this.data.form).then(result => {
        //成功回调
        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
          })
        } else {
          this.setData({ finished: true })
        }
        this.data.requesting = false
      }).catch(err => {
        //异常回调
        this.data.requesting = false
      })
    },
    lookItem: function(e){
      var item = this.data.momentList[e.currentTarget.dataset.page][e.currentTarget.dataset.index]
      wx.navigateTo({
        url: '/pages/moment/detail/index?id=' + item.id
      })
    },
    likeItem: function(e){
      var item = this.data.momentList[e.currentTarget.dataset.page][e.currentTarget.dataset.index]
      if(item.isLiked){
        util.showToast('请勿重复点赞')
        return
      }
      request.post('/information-center/like-or-cancel/post', {postId: item.id}).then(result => {
        this.setData({ 
          ['momentList[' + e.currentTarget.dataset.page + '][' + e.currentTarget.dataset.index + '].likeQuantity']: result.data.likeQuantity,
          ['momentList[' + e.currentTarget.dataset.page + '][' + e.currentTarget.dataset.index + '].isLiked']: 1
         })
      }).catch(error => {
        util.showToast(error)
      })
    },
    toMomentList: function(){
      wx.navigateTo({
        url: '/pages/moment/list/index'
      })
    },
    toPaperList: function(){
      wx.navigateTo({
        url: '/pages/moment/paper/index'
      })
    }
  }
})