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contributor license agreements.  See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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  http://www.apache.org/licenses/LICENSE-2.0

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distributed under the License is distributed on an "AS IS" BASIS,
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See the License for the specific language governing permissions and
limitations under the License. -->
<template>
  <div ref="timeline" class="task-timeline"></div>
</template>
<script lang="ts" setup>
  import { ref, watch, onMounted } from "vue";
  import dayjs from "dayjs";
  import { useThrottleFn } from "@vueuse/core";
  import { ElMessage } from "element-plus";
  import type { EBPFTaskList } from "@/types/ebpf";
  import { useTaskTimelineStore } from "@/store/modules/task-timeline";
  import { useDashboardStore } from "@/store/modules/dashboard";
  import { useSelectorStore } from "@/store/modules/selectors";
  import { useContinousProfilingStore } from "@/store/modules/continous-profiling";
  import { DataSet, Timeline } from "vis-timeline/standalone";
  import "vis-timeline/styles/vis-timeline-graph2d.css";
  import { EBPFProfilingTriggerType } from "@/store/data";

  const taskTimelineStore = useTaskTimelineStore();
  const selectorStore = useSelectorStore();
  const continousProfilingStore = useContinousProfilingStore();
  const dashboardStore = useDashboardStore();
  /* global defineProps, Nullable */
  const props = defineProps({
    data: {
      type: Object,
      default: () => ({}),
    },
  });
  const timeline = ref<Nullable<HTMLDivElement>>(null);
  const visGraph = ref<Nullable<any>>(null);
  const oldVal = ref<{ width: number; height: number }>({ width: 0, height: 0 });
  const visDate = (date: number, pattern = "YYYY-MM-DD HH:mm:ss") => dayjs(date).format(pattern);

  init();
  onMounted(() => {
    oldVal.value = (timeline.value && timeline.value.getBoundingClientRect()) || {
      width: 0,
      height: 0,
    };
    useThrottleFn(resize, 500)();
  });

  async function init() {
    const serviceId = (selectorStore.currentService && selectorStore.currentService.id) || "";
    const serviceInstanceId = (selectorStore.currentPod && selectorStore.currentPod.id) || "";
    const type = continousProfilingStore.selectedStrategy.type;
    const res = await taskTimelineStore.getContinousTaskList({
      serviceId,
      serviceInstanceId,
      targets: type ? [type] : null,
      triggerType: EBPFProfilingTriggerType.CONTINUOUS_PROFILING,
    });
    if (res.errors) {
      ElMessage.error(res.errors);
      return;
    }
    visTimeline();
  }

  function visTimeline() {
    if (!timeline.value) {
      return;
    }
    if (visGraph.value) {
      visGraph.value.destroy();
    }
    const h = timeline.value.getBoundingClientRect().height;
    const taskList = taskTimelineStore.taskList.map((d: EBPFTaskList, index: number) => {
      return {
        id: index + 1,
        // content: d.targetType,
        start: new Date(Number(d.taskStartTime)),
        end: new Date(Number(d.taskStartTime + d.fixedTriggerDuration * 1000)),
        data: d,
        className: d.targetType,
      };
    });
    const items: any = new DataSet(taskList);
    const options: any = {
      height: h,
      width: "100%",
      locale: "en",
      groupHeightMode: "fitItems",
      autoResize: false,
      tooltip: {
        overflowMethod: "cap",
        template(item: EBPFTaskList | any) {
          const data = item.data || {};
          const end = data.taskStartTime ? visDate(data.taskStartTime + data.fixedTriggerDuration * 1000) : "";

          let tmp = `
          <div>Task ID: ${data.taskId || ""}</div>
          <div>Service Name: ${data.serviceName || ""}</div>
          <div>Service Instance Name: ${data.serviceInstanceName || ""}</div>
          <div>Service Process Name: ${data.processName || ""}</div>
          <div>Target Type: ${data.targetType || ""}</div>
          <div>Trigger Type: ${data.triggerType || ""}</div>
          <div>Start Time: ${data.taskStartTime ? visDate(data.taskStartTime) : ""}</div>
          <div>End Time: ${end}</div>
          <div>Process Labels: ${data.processLabels.join("; ") || ""}</div>`;
          let str = "";
          for (const item of data.continuousProfilingCauses || []) {
            str += `<div>${item.type}: ${getURI(item.uri)}${item.uri.threshold}>=${item.uri.current}</div>`;
          }
          return tmp + str;
        },
      },
    };
    visGraph.value = new Timeline(timeline.value, items, options);
    visGraph.value.on("select", async (properties: { items: number[] }) => {
      dashboardStore.selectWidget(props.data);
      const index = properties.items[0];
      const task = taskTimelineStore.taskList[index];

      await taskTimelineStore.setSelectedTask(task);
      await taskTimelineStore.getGraphData();
    });
  }

  function getURI(uri: { uriRegex: string; uriPath: string }) {
    return uri ? `(${uri.uriRegex || ""} | ${uri.uriPath || ""})` : "";
  }

  function resize() {
    const observer = new ResizeObserver((entries) => {
      const entry = entries[0];
      const cr = entry.contentRect;
      if (Math.abs(cr.width - oldVal.value.width) < 3 && Math.abs(cr.height - oldVal.value.height) < 3) {
        return;
      }
      visTimeline();
      oldVal.value = { width: cr.width, height: cr.height };
    });
    if (timeline.value) {
      observer.observe(timeline.value);
    }
  }
  watch(
    () => selectorStore.currentPod,
    () => {
      init();
    },
  );
</script>
<style lang="scss" scoped>
  .task-timeline {
    width: calc(100% - 5px);
    margin: 0 5px 5px 0;
    height: 200px;
  }

  .message {
    max-width: 400px;
    text-overflow: ellipsis;
    overflow: hidden;
  }
</style>
