<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, onUnmounted, watch } from "vue";
import bus from "@/bus";
export default {
  name: "line-chart",
  props: {
    data: Object,
    refresh: Number,
    ClickData: String,
    TypeID: String,
  },
  setup(props) {
    const allData = reactive({
      series: [],
      legend: [],
      id: guid(),
      chart: null,
      timer: null,
    });
    const resizeTheChart = () => {
      if (allData.chart) {
        allData.chart.resize();
      }
    };

    const init = () => {
      // let chartDom = echarts.init(document.getElementById(allData.id));
      //先获取Dom上的实例
      let chartDom = echarts.getInstanceByDom(document.getElementById(allData.id));
      //然后判断实例是否存在，如果不存在，就创建新实例
      if (chartDom == null) {
        chartDom = echarts.init(document.getElementById(allData.id));
      }
      var option;
      option = {
        tooltip: {
          trigger: "axis",
          backgroundColor: "#004284",
          borderColor: "#0B9BFF",
          borderRadius: 6, // 设置圆角大小
          // 自定义提示框文本样
          textStyle: {
            // 字体颜色
            color: "white",
            // 字体大小
            fontSize: 14,
          },
          formatter: (params) => {
            // console.log(params);
            var relVal = "" + params[0].name;
            for (var i = 0, l = params.length; i < l; i++) {
              if (params[i].seriesName) {
                let unit = "次";
                relVal +=
                  "<br/>" +
                  params[i].marker +
                  params[i].seriesName +
                  " " +
                  params[i].value +
                  unit;
              }
            }
            return relVal;
          },
        },
        legend: {
          data: [props.data.yAxis_Name, props.data.yAxis2_Name],
          textStyle: {
            color: "#FFFFFF",
            fontSize: 12,
          },
        },
        grid: {
          bottom: "0%",
          right: "0%",
          left: "0%",
          containLabel: true,
        },

        xAxis: {
          type: "category",
          boundaryGap: true,
          data: props.data.xAxis,
          axisLabel: {
            color: "rgba(255,255,255,1)",
            fontSize: 12,
            fontFamily: "AlibabaPuHuiTi",
            formatter: function (params) {
              var str = ""; // 最终拼接成的字符串
              var paramsLen = params.length; // 获取每项文字的个数
              var len = props.data.xAxis.length > 7 ? 2 : 3; // 每行能显示的字的个数（根据实际情况自己设置）
              var rowNumber = Math.ceil(paramsLen / len); // 换行的话，需要显示几行，向上取整
              if (paramsLen > len) {
                //大于设定的len就换行，不大于就不变化
                for (var i = 0; i < rowNumber; i++) {
                  var temp = ""; // 表示每一次截取的字符串
                  var start = i * len; // 开始截取的位置
                  var end = start + len; // 结束截取的位置
                  if (i == rowNumber - 1) {
                    // 最后一次不换行
                    temp = params.substring(start, paramsLen);
                  } else {
                    // 每一次拼接字符串并换行
                    temp = params.substring(start, end) + "\n";
                  }
                  str += temp; // 最终拼成的字符串
                }
              } else {
                // 给新的字符串赋值
                str = params;
              }
              return str; //返回字符串
            },
          },
        },
        yAxis: {
          name: "次",
          type: "value",
          minInterval: 1,
          axisLabel: {
            color: "#AAC1CF",
            show: true,
          },
          nameTextStyle: {
            color: "#AAC1CF",
          },
          splitLine: {
            lineStyle: {
              type: "dashed",
              color: "#2161a8",
            },
          },
          alignTicks: true,
        },
        series: [
          {
            name: props.data.yAxis_Name,
            type: "line",
            data: props.data.yAxis,
            // 修改折线颜色
            lineStyle: {
              color: "aqua", // 折线颜色
              width: 2, // 折线宽度
            },
            // 修改数据点颜色
            itemStyle: {
              color: "aqua", // 数据点颜色
            },
          },
          {
            name: props.data.yAxis2_Name,
            type: "line",
            data: props.data.yAxis2,
            // 修改折线颜色
            lineStyle: {
              color: "yellow", // 折线颜色
              width: 2, // 折线宽度
            },
            // 修改数据点颜色
            itemStyle: {
              color: "yellow", // 数据点颜色
            },
          },
        ],
      };

      option && chartDom.setOption(option, true);
      allData.chart = chartDom;
      animateChart();
      // 监听点击事件
      allData.chart.on("click", function (params) {
        // params.value 是点击的X轴标签的值
        console.log("echarts点击事件", params.value, props.ClickData, props.TypeID);
        // 在这里可以执行相应的逻辑
        bus.emit("openJXFXDialog", {
          name: params.name,
          ClickData: props.ClickData,
        });
      });
    };
    watch(
      () => props.refresh,
      () => {
        console.log(props, "propspropsprops");
        if (allData.chartDom) {
          allData.chartDom.dispose();
          allData.chartDom = null;
          // clearInterval(allData.timer);
        }
        allData.chart.off("click");
        setTimeout(() => {
          init();
        }, 0);
      }
    );
    // echarts动画
    function animateChart() {
      let length = props.data.xAxis.length;
      let i = 0;
      if (allData.timer) clearInterval(allData.timer);
      allData.timer = setInterval(() => {
        allData.chart.dispatchAction({
          type: "showTip",
          seriesIndex: 0,
          dataIndex: i,
        });
        i++;
        if (i == length) i = 0;
      }, 3000);
    }
    onMounted(() => {
      init();
      window.addEventListener("resize", resizeTheChart);
    });
    onUnmounted(() => {
      if (allData.timer) clearInterval(allData.timer);
    });
    return {
      ...toRefs(allData),
      resizeTheChart,
      init,
    };
  },
};
</script>