<template>
  <div :id="id" style="width: 100%; height: 100%"></div>
</template>
<script>
import * as echarts from 'echarts';
import { guid } from '@/utils/ruoyi';
import { reactive, toRefs, onMounted, watch, onUnmounted } from 'vue';
export default {
  name: 'line-chart',
  props: {
    data: Object,
    refresh: Number,
  },
  setup(props) {
    const allData = reactive({
      series: [],
      legend: [],
      id: guid(),
      chart: null,
      timer: null,
      anIndex: 0,
    });
    const resizeTheChart = () => {
      if (allData.chart) {
        allData.chart.resize();
      }
    };

    const init = () => {
      let markLinedata = [];
      if (props.data.controlMarkLine.length) {
        props.data.controlMarkLine.map(item => {
          let newitem = {
            silent: true, //鼠标悬停事件  true没有，false有
            lineStyle: {
              //警戒线的样式  ，虚实  颜色
              type: 'solid',
              color: item.color,
              opacity: item.Opacity,
              width: 2,
            },
            yAxis: item.value,
            label: {
              formatter: `${item.typeName}：${item.value}` + '(m)',
              color: item.color,
            },
          };
          markLinedata.push(newitem);
        });
      }
      let chartDom = echarts.init(document.getElementById(allData.id));
      var option;
      option = {
        color: ['#3FFFC2', '#FFF21C', 'orange'],
        tooltip: {
          trigger: 'axis',
        },
        grid: {
          top: 40,
          bottom: 30,
        },
        legend: {
          // data: ['降雨量(mm)', '水深(m)'],
          textStyle: {
            color: '#fff',
          },
        },
        dataZoom: [{ type: 'inside', startValue: props.data.xAxis[props.data.xAxis - 48] }],
        xAxis: [
          {
            type: 'category',
            splitLine: {
              show: false,
            },
            axisTick: {
              show: false,
            },
            axisLabel: {
              color: 'rgba(255,255,255,1)',
              fontSize: 14,
              fontFamily: 'AlibabaPuHuiTi',
            },
            data: props.data.xAxis,
          },
        ],
        yAxis: [
          {
            name: '降雨量(mm)',
            type: 'value',
            inverse: true,
            nameLocation: 'start', // 坐标轴名称显示位置
            axisLabel: {
              color: '#fff',
              show: true,
            },
            nameTextStyle: {
              color: '#fff',
            },
            splitLine: {
              lineStyle: {
                type: 'dashed',
                color: '#1D5D81',
              },
            },
            max: Math.max(...props.data.yAxis) + 0.5,
          },
          {
            name: '水深(m)',
            max: markLinedata.length > 0 ? Number(markLinedata[0].yAxis) + 0.3 : 3,
            type: 'value',
            inverse: false,
            nameLocation: 'end', // 坐标轴名称显示位置
            nameTextStyle: { color: '#FFF21C' },
            axisLabel: { show: true, color: '#FFF21C' },
            splitLine: {
              lineStyle: {
                color: '#1D5D81',
                type: 'dashed',
              },
            },
          },
        ],
        series: [
          {
            name: '降雨量',
            type: 'bar',
            barGap: '10%', // Make series be overlap
            barCateGoryGap: '10%',
            itemStyle: {
              color: new echarts.graphic.LinearGradient(0, 0, 0, 0.7, [
                { offset: 0, color: 'rgba(24, 255, 255, 1)' },
                { offset: 1, color: 'rgba(188, 255, 255, 1)' },
              ]),
            },
            yAxisIndex: 0,
            data: props.data.yAxis,
          },
          {
            smooth: true, //变为曲线 默认false折线
            name: '水深',
            type: 'line',
            data: props.data.yAxis2,
            yAxisIndex: 1,
            color: '#FFF21C',
            markLine: {
              // symbol: 'none', //去掉警戒线最后面的箭头
              label: {
                position: 'middle', //将警示值放在哪个位置，三个值“start”,"middle","end"  开始  中点 结束
              },
              data: markLinedata,
            },
          },
        ],
      };
      option && chartDom.setOption(option, true);
      allData.chart = chartDom;
      animateChart(); // echarts动画
    };
    watch(
      () => props.refresh,
      () => {
        if (allData.chart) {
          allData.chart.dispose();
          allData.chart = null;
        }
        if (allData.timer) clearInterval(allData.timer);
        setTimeout(() => {
          init();
          allData.anIndex = 0;
        }, 0);
      }
    );
    // echarts动画
    function animateChart() {
      let length = props.data.xAxis.length;
      allData.timer = setInterval(() => {
        allData.anIndex++;
        if (allData.anIndex == length) allData.anIndex = 0;
        allData.chart.dispatchAction({
          type: 'showTip',
          seriesIndex: 0,
          dataIndex: allData.anIndex,
        });
      }, 2000);
    }
    onMounted(() => {
      init();
      window.addEventListener('resize', resizeTheChart);
    });
    onUnmounted(() => {
      if (allData.timer) clearInterval(allData.timer);
    });
    return {
      ...toRefs(allData),
      resizeTheChart,
      init,
    };
  },
};
</script>