<template>
    <div :class="className" :style="{height:height,width:width}" />
  </template>
  
  <script>
  import echarts from 'echarts'
  require('echarts/theme/macarons') // echarts theme
  import resize from './mixins/resize'
  
  export default {
    mixins: [resize],
    props: {
      className: {
        type: String,
        default: 'chart'
      },
      width: {
        type: String,
        default: '100%'
      },
      height: {
        type: String,
        default: '300px'
      }
    },
    data() {
      return {
        chart: null
      }
    },
    mounted() {
      this.$nextTick(() => {
        this.initChart()
      })
    },
    beforeDestroy() {
      if (!this.chart) {
        return
      }
      this.chart.dispose()
      this.chart = null
    },
    methods: {
      initChart() {
        this.chart = echarts.init(this.$el, 'macarons')
  
        this.chart.setOption({
          tooltip: {
            trigger: 'item',
            formatter: '{a} <br/>{b} : {c} ({d}%)'
          },
          legend: {
            left: 'center',
            bottom: '10',
            data: ['Industries', 'Technology', 'Forex', 'Gold', 'Forecasts']
          },
          series: [
            {
              name: 'WEEKLY WRITE ARTICLES',
              type: 'pie',
              roseType: 'radius',
              radius: [15, 95],
              center: ['50%', '38%'],
              data: [
                { value: 320, name: 'Industries' },
                { value: 240, name: 'Technology' },
                { value: 149, name: 'Forex' },
                { value: 100, name: 'Gold' },
                { value: 59, name: 'Forecasts' }
              ],
              animationEasing: 'cubicInOut',
              animationDuration: 2600
            }
          ]
        })
      }
    }
  }
  </script>