<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 chartDom = echarts.init(document.getElementById(allData.id));
      var option;
      option = {
        color: ["#FFB049", "#FFB049"],
        tooltip: {
          trigger: "axis",
        },
        grid: {
          top: 30,
          bottom: 30,
          right: 70,
        },
        legend: {
          data: ["降雨量(mm)", "水深(cm)", "流速(m/s)"],
          textStyle: {
            color: "#fff",
          },
        },
        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: props.data.yAxisName1 || "",
            inverse: props.data.inverse || false, //翻转
            type: "value",
            axisLabel: {
              color: "rgba(73, 197, 255, 1)",
              show: true,
            },
            nameTextStyle: {
              color: "rgba(73, 197, 255, 1)",
            },
            splitLine: {
              lineStyle: {
                type: "dashed",
                color: "#60C2FF",
              },
            },
          },
          {
            name: props.data.yAxisName2 || "",
            inverse: false,
            nameLocation: "start", // 坐标轴名称显示位置
            type: "value",
            nameTextStyle: {
              color: "#FFB049",
            },
            axisLabel: {
              show: true,
              color: "#FFB049",
            },
            splitLine: {
              lineStyle: {
                color: "#1D5D81",
                type: "dashed",
              },
            },
          },
          {
            name: props.data.yAxisName3 || "",
            inverse: false,
            offset: 30,
            nameLocation: "start", // 坐标轴名称显示位置
            type: "value",
            nameTextStyle: {
              color: "#1BFFF7",
            },
            axisLabel: {
              show: true,
              color: "#1BFFF7",
            },
            splitLine: {
              lineStyle: {
                color: "#1D5D81",
                type: "dashed",
              },
            },
          },
        ],
        // 时间轴滑动选择器
        dataZoom: [
          {
            show: true,
            realtime: true,
            start: 30,
            end: 70,
            xAxisIndex: [0, 1],
          },
        ],
        series: [
          {
            name: "降雨量(mm)",
            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(169, 210, 255, 1)",
                },
                {
                  offset: 1,
                  color: "rgba(73, 197, 255, 1)",
                },
              ]),
              borderRadius: [0, 0, 10, 10],
            },
            yAxisIndex: 0,
            data: props.data.yAxis1,
          },
          {
            // smooth: true, //变为曲线 默认false折线
            name: "水深(cm)",
            type: "line",
            data: props.data.yAxis2,
            yAxisIndex: 1,
            color: "#FFB049",
          },
          {
            // smooth: true, //变为曲线 默认false折线
            name: "流速(m/s)",
            type: "line",
            data: props.data.yAxis3,
            yAxisIndex: 2,
            color: "#1BFFF7",
          },
          {
            type: "line",
            yAxisIndex: 1,
            markLine: {
              symbol: "none",
              label: {
                show: false,
                position: "middle",
                formatter: "轻微风险警戒线：{c}",
                color: "#FFFF80",
                fontWeight: "bold",
              },
              lineStyle: {
                color: "#FFFF80",
                width: 1,
                type: "solid",
              },
              data: [
                {
                  name: "轻微风险警戒线",
                  yAxis: "15",
                },
              ],
            },
          },
          {
            type: "line",
            yAxisIndex: 1,
            markLine: {
              symbol: "none",
              label: {
                show: false,
                position: "middle",
                formatter: "溢流风险警戒线：{c}",
                color: "#E20F36",
                fontWeight: "bold",
              },
              lineStyle: {
                color: "#E20F36",
                width: 1,
                type: "solid",
              },
              data: [
                {
                  name: "溢流风险警戒线",
                  yAxis: "30",
                },
              ],
            },
          },
        ],
      };
      option && chartDom.setOption(option, true);
      allData.chart = chartDom;
      animateChart();
    };
    watch(
      () => props.refresh,
      () => {
        if (allData.chart) {
          allData.chart.dispose();
          allData.chart = null;
        }
        setTimeout(() => {
          init();
          allData.anIndex = 0;
        }, 0);
      }
    );
    // echarts动画
    function animateChart() {
      if (allData.timer) {
        clearInterval(allData.timer);
      }
      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);
    });
    onBeforeUnmount(() => {
      if (allData.timer) clearInterval(allData.timer);
    });
    return {
      ...toRefs(allData),
      resizeTheChart,
      init,
    };
  },
};
</script>