<template>
  <div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import * as 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,
      config: {
        xAxis: [
          {
            data: [],
            boundaryGap: false,
            axisTick: {
              show: false,
            },
          },
        ],
        grid: {
          left: 60,
          right: 60,
          bottom: 20,
          top: 30,
          containLabel: true,
        },
        tooltip: {
          trigger: "axis",
          axisPointer: {
            type: "cross",
          },
          padding: [5, 10],
        },
        yAxis: [
          {
            boundaryGap: false,
            axisTick: {
              show: false,
            },
          },
        ],
        legend: {
          data: [],
        },
        series: [
          {
            // smooth: true,
            type: "line",
            data: [],
            animationDuration: 2800,
            animationEasing: "cubicInOut",
          },
        ],
      },
    };
  },
  watch: {
    chartData: {
      deep: true,
      handler(val) {
        this.setOptions(val);
      },
    },
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart();
    });
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart.dispose();
    this.chart = null;
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el);
      this.setOptions(this.chartData);
    },
    setOptions(chartData) {
      if (!chartData.data) return;
      let option = {};
      option = this.config;
      const series = chartData.data.map((v) => {
        return {
          name: v.name,
          value: Number(v.value),
        };
      });
      option.xAxis[0].data = series.map((_) => _.name);
      option.series[0].data = series.map((_) => _.value);
      this.chart.setOption(option);
    },
  },
};
</script>