<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: '350px'
    },
    autoResize: {
      type: Boolean,
      default: true
    },
    chartData: {
      type: Object,
      required: true
    }
  },
  data() {
    return {
      chart: null
    }
  },
  watch: {
    chartData: {
      deep: true,
      handler(val) {
        this.setOptions(val)
      }
    }
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    moneyMax(num) {
      let prec = 2
      let ceil = true
      const len = String(num).length;
      if (len <= prec) {
        return num
      }
      const mult = Math.pow(10, prec);
      return ceil ? Math.ceil(num / mult) * mult : Math.floor(num / mult) * mult;
    },
    numberMax(num1,num2){
      let num = ''
      if (num1 >= num2) {
        num = num1
      } else {
        num = num2
      }
      let prec = 2
      let ceil = true
      const len = String(num).length;
      if (len <= prec) {
        return num
      }
      const mult = Math.pow(10, prec);
      return ceil ? Math.ceil(num / mult) * mult : Math.floor(num / mult) * mult;
    },
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons')
      if(this.chartData.months){
        this.setOptions(this.chartData)
      }
    },
    setOptions({ expectedData, actualData, moneyData, months} = {}) {
      this.chart.setOption({
        xAxis: {
          data: months,
          boundaryGap: false,
          axisTick: {
            show: true
          }
        },
        grid: {
          left: 10,
          right: 10,
          bottom: 20,
          top: 30,
          containLabel: true
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross'
          },
          padding: [5, 10]
        },
        yAxis: [
          {
          	type: 'value',
          	name: '数量',
          	min: 0,
          	max: this.numberMax(this.chartData.maxAccountData,this.chartData.maxChannelData)<10?10:this.numberMax(this.chartData.maxAccountData,this.chartData.maxChannelData),
          	interval: this.numberMax(this.chartData.maxAccountData,this.chartData.maxChannelData)<10?2:(this.numberMax(this.chartData.maxAccountData,this.chartData.maxChannelData))/5,
          	axisLabel: {
          		formatter: '{value} '
          	}
          },
          {
          	type: 'value',
          	name: '收益',
          	min: 0,
          	max: this.moneyMax(this.chartData.maxMoneyData),
          	interval: (this.moneyMax(this.chartData.maxMoneyData) / 5),
          	axisLabel: {
          		formatter: '{value} 元'
          	}
          }

        ],
        legend: {
          data: [ '订单','收益']
        },
        series: [{
          name: '订单',
          smooth: true,
          type: 'line',
          itemStyle: {
            normal: {
              color: '#3888fa',
              lineStyle: {
                color: '#3888fa',
                width: 2
              },
              areaStyle: {
                color: '#f3f8ff'
              }
            }
          },
          data: actualData,
          animationDuration: 2800,
          animationEasing: 'quadraticOut'
        },
        {
          name: '收益',
          smooth: true,
          type: 'line',
          yAxisIndex: 1,
          itemStyle: {
            normal: {
              color: '#40c9c6',
              lineStyle: {
                color: '#40c9c6',
                width: 2
              },
              areaStyle: {
                color: '#f3f8ff'
              }
            }
          },
          data: moneyData,
          animationDuration: 2800,
          animationEasing: 'quadraticOut'
        }]
      })
    }
  }
}
</script>