/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * 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
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

<template>
  <div class="trace-tree-charts scroll_hide flex-v">
    <transition-group name="fade" tag="div" style="padding: 10px 30px;">
      <span class="time-charts-item mr-10" v-for="(i,index) in list" :key="i" :style="`color:${computedScale(index)}`">
         <svg class="icon vm mr-5 sm">
            <use xlink:href="#issue-open-m"></use>
          </svg> 
        <span>{{i}}</span>
      </span>
    </transition-group>
    <div style="padding: 0 30px;">
      <a class="trace-tree-btn mr-10" @click="tree.setDefault()">Default</a>
      <a class="trace-tree-btn mr-10" @click="tree.getTopSlow()">Top 5 of slow</a>
      <a class="trace-tree-btn mr-10" @click="tree.getTopChild()">Top 5 of children</a>
    </div>
      <rk-sidebox :width="'50%'" :show.sync="showDetail" :title="$t('spanInfo')">
      <div class="rk-trace-detail">
        <h5 class="mb-15">{{$t('tags')}}.</h5>
        <div class="mb-10 clear"><span class="g-sm-4 grey">{{$t('endpoint')}}:</span><span class="g-sm-8 wba">{{this.currentSpan.label}}</span></div>
        <div class="mb-10 clear"><span class="g-sm-4 grey">{{$t('spanType')}}:</span><span class="g-sm-8 wba">{{this.currentSpan.type}}</span></div>
        <div class="mb-10 clear"><span class="g-sm-4 grey">{{$t('component')}}:</span><span class="g-sm-8 wba">{{this.currentSpan.component}}</span></div>
        <div class="mb-10 clear"><span class="g-sm-4 grey">Peer:</span><span class="g-sm-8 wba">{{this.currentSpan.peer||'No Peer'}}</span></div>
        <div class="mb-10 clear"><span class="g-sm-4 grey">{{$t('error')}}:</span><span class="g-sm-8 wba">{{this.currentSpan.isError}}</span></div>
        <div class="mb-10 clear" v-for="i in this.currentSpan.tags" :key="i.key">
          <span class="g-sm-4 grey">{{i.key}}:</span>
          <span class="g-sm-8 wba">
            {{i.value}}
            <svg v-if="i.key==='db.statement'" class="icon vm grey link-hover cp ml-5" @click="copy(i.value)">
              <use xlink:href="#review-list"></use>
            </svg>
          </span>
        </div>
        <h5 class="mb-10" v-if="this.currentSpan.logs" v-show="this.currentSpan.logs.length">{{$t('logs')}}.</h5>
        <div v-for="(i, index) in this.currentSpan.logs" :key="index">
          <div class="mb-10 sm"><span class="mr-10">{{$t('time')}}:</span><span class="grey">{{i.time | dateformat}}</span></div>
          <div class="mb-15 clear" v-for="(_i, _index) in i.data" :key="_index">
            <div class="mb-10">{{_i.key}}:<span v-if="_i.key==='stack'" class="r rk-sidebox-magnify"
                                                @click="showCurrentSpanDetail(_i.key, _i.value)">
          <svg class="icon">
            <use xlink:href="#magnify"></use>
          </svg>
        </span></div><pre class="pl-15 mt-0 mb-0 sm oa">{{_i.value}}</pre>
          </div>
        </div>
      </div>
    </rk-sidebox>
    <v-dialog width="90%"/>
    <div class="trace-tree" style="height:100%">
      <div class="trace-tree-inner" ref="traceTree"></div>
    </div>
  </div>
</template>
<script lang="js">
import copy from '@/utils/copy';
import * as d3 from 'd3';
import Tree from './d3-trace-tree';
import _ from 'lodash';
/* eslint-disable */
/* tslint:disable */
export default {
  props: ['data', 'traceId'],
  data(){
    return {
      segmentId:[],
      showDetail: false,
      list: [],
      currentSpan: [],
    };
  },
  watch: {
    data() {
      if(!this.data.length) {return;}
      d3.select('.trace-tree-inner').selectAll('svg').selectAll('svg').remove();
      this.changeTree();
      this.tree.init({label:`${this.traceId}`, children: this.segmentId}, this.data);
    }
  },
  mounted() {
    window.addEventListener('resize', this.resize);
    this.changeTree();
    this.tree = new Tree(this.$refs.traceTree, this);
    this.tree.init({label:`${this.traceId}`, children: this.segmentId}, this.data);
  },
  beforeDestroy() {
      window.removeEventListener('resize', this.resize);
  },
  methods: {
    copy,
    handleSelectSpan(i) {
      this.currentSpan = i.data;
      this.showDetail = true;
    },
    traverseTree(node, spanId, segmentId, data){
      if (!node) return;
      if(node.spanId == spanId && node.segmentId == segmentId) {node.children.push(data);return;}
      if (node.children && node.children.length > 0) {
        for (let i = 0; i < node.children.length; i++) {
            this.traverseTree(node.children[i],spanId,segmentId,data);
        }
      }
    },
    computedScale(i) {
       // Rainbow map
      const sequentialScale = d3.scaleSequential()
      .domain([0, this.list.length + 1])
      .interpolator(d3.interpolateCool);
      return sequentialScale(i);
    },
    changeTree(){
      if (this.data.length === 0) return [];
      this.list = Array.from(new Set(this.data.map(i => i.serviceCode)));
      this.segmentId = [];
      const segmentGroup = {}
      const segmentIdGroup = []
      const fixSpans = [];
      const segmentHeaders = [];
        this.data.forEach((span) => {
          if (span.parentSpanId === -1) {
            segmentHeaders.push(span);
          } else {
            const index = this.data.findIndex(i => (i.segmentId === span.segmentId && i.spanId === (span.spanId - 1)));
            const fixSpanKeyContent = {
              traceId: span.traceId,
              segmentId: span.segmentId,
              spanId: span.spanId - 1,
              parentSpanId: span.spanId - 2,
            };
            if (index === -1 && !_.find(fixSpans, fixSpanKeyContent)) {
              fixSpans.push(
                {
                  ...fixSpanKeyContent, refs: [], endpointName: `VNode: ${span.segmentId}`, serviceCode: 'VirtualNode', type: `[Broken] ${span.type}`, peer: '', component: `VirtualNode: #${span.spanId - 1}`, isError: true, isBroken: true, layer: 'Broken', tags: [], logs: [],
                },
              );
            }
          }
        });
        segmentHeaders.forEach((span) => {
          if (span.refs.length) {
            span.refs.forEach((ref) => {
              const index = this.data.findIndex(i => (ref.parentSegmentId === i.segmentId && ref.parentSpanId === i.spanId));
              if (index === -1) {
                // create a known broken node.
                const i = ref.parentSpanId;
                const fixSpanKeyContent = {
                  traceId: ref.traceId,
                  segmentId: ref.parentSegmentId,
                  spanId: i,
                  parentSpanId: i > -1 ? 0 : -1,
                };
                !_.find(fixSpans, fixSpanKeyContent) && fixSpans.push(
                  {
                    ...fixSpanKeyContent, refs: [], endpointName: `VNode: ${ref.parentSegmentId}`, serviceCode: 'VirtualNode', type: `[Broken] ${ref.type}`, peer: '', component: `VirtualNode: #${i}`, isError: true, isBroken: true, layer: 'Broken', tags: [], logs: [],
                  },
                );
                // if root broken node is not exist, create a root broken node.
                if (fixSpanKeyContent.parentSpanId > -1) {
                  const fixRootSpanKeyContent = {
                    traceId: ref.traceId,
                    segmentId: ref.parentSegmentId,
                    spanId: 0,
                    parentSpanId: -1,
                  };
                  !_.find(fixSpans, fixRootSpanKeyContent) && fixSpans.push(
                    {
                      ...fixRootSpanKeyContent,
                      refs: [],
                      endpointName: `VNode: ${ref.parentSegmentId}`,
                      serviceCode: 'VirtualNode',
                      type: `[Broken] ${ref.type}`,
                      peer: '',
                      component: `VirtualNode: #0`,
                      isError: true,
                      isBroken: true,
                      layer: 'Broken',
                      tags: [],
                      logs: [],
                    },
                  );
                }
              }
            });
          }
        });
        [...fixSpans, ...this.data].forEach(i => {
          i.label=i.endpointName || 'no operation name';
          i.children = [];
          if(segmentGroup[i.segmentId] === undefined){
            segmentIdGroup.push(i.segmentId);
            segmentGroup[i.segmentId] = [];
            segmentGroup[i.segmentId].push(i);
          }else{
            segmentGroup[i.segmentId].push(i);
          }
        });
        segmentIdGroup.forEach(id => {
          let currentSegment = segmentGroup[id].sort((a,b) => b.parentSpanId-a.parentSpanId);
          currentSegment.forEach(s =>{
            let index = currentSegment.findIndex(i => i.spanId === s.parentSpanId);
            if (index !== -1) {
              if ((currentSegment[index].isBroken && currentSegment[index].parentSpanId === -1) || !currentSegment[index].isBroken) {
                currentSegment[index].children.push(s);
                currentSegment[index].children.sort((a, b) => a.spanId - b.spanId);
              }
            }
            if (s.isBroken) {
              const children = _.filter(this.data, (span) => {
                return _.find(span.refs, {traceId: s.traceId, parentSegmentId: s.segmentId, parentSpanId: s.spanId});
              });
              children.length > 0 && s.children.push(...children);
            }
          })
          segmentGroup[id] = currentSegment[currentSegment.length-1]
        })
        segmentIdGroup.forEach(id => {
          segmentGroup[id].refs.forEach(ref => {
            if(ref.traceId === this.traceId) {
              this.traverseTree(segmentGroup[ref.parentSegmentId],ref.parentSpanId,ref.parentSegmentId,segmentGroup[id])
            };
          })
          // if(segmentGroup[id].refs.length !==0 ) delete segmentGroup[id];
        })
      for (let i in segmentGroup) {
        if(segmentGroup[i].refs.length ===0 )
        this.segmentId.push(segmentGroup[i]);
      }
      this.segmentId.forEach((_, i) => {
        this.collapse(this.segmentId[i]);
      })
    },
    collapse(d) {
      if(d.children){
        let dur = d.endTime - d.startTime;
        d.children.forEach(i => {
          dur -= (i.endTime - i.startTime);
        })
        d.dur = dur < 0 ? 0 : dur;
        d.children.forEach((i) => this.collapse(i));
      }
    },
    resize() {
        this.tree.resize();
    },
    showCurrentSpanDetail(title, text) {
      const textLineNumber = text.split('\n').length;
      let textHeight = textLineNumber * 20.2 + 10;
      const tmpHeight = window.innerHeight * 0.9
      textHeight = textHeight >= tmpHeight ? tmpHeight : textHeight;
      this.$modal.show('dialog', {
        title,
        text: `<div style="height:${textHeight}px">${text}</div>`,
        buttons: [
          {
            title: 'Copy',
            handler: () => {
              this.copy(text);
            },
          },
          {
            title: 'Close',
          },
        ],
      })
    },
  }
};
</script>
<style lang="scss">
.trace-tree-btn{
  display: inline-block;
  border-radius: 4px;
  padding: 0px 7px;
  background-color: #40454e;
  color: #eee;
  font-size: 11px;
}
.trace-tree-charts{
  overflow: auto;
  flex-grow: 1;
  height: 100%;
}
.trace-node .group {
  cursor: pointer;
  fill-opacity: 0;
}
.trace-tree-inner{
  height: 100%;
}
.trace-node-container{
  fill: rgba(0, 0, 0, 0);
  stroke-width: 5px;
  cursor: pointer;
  &:hover{
    fill: rgba(0,0,0,0.05)
  }
}
.trace-node  .node-text {
  font: 12.5px sans-serif;
  pointer-events: none;
}
.domain{display: none;}
.tree-link {
  fill: none;
  stroke: rgba(0,0,0,0.1);
  stroke-width: 2px;
}
.time-charts-item{
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid;
  font-size: 11px;
  border-radius: 4px;
}
 .trace-tree{
   fill: rgba(0,0,0,0);
   flex-grow: 1;
 }
 .trace-tree .trace-node rect{
   &:hover{
     fill: rgba(0,0,0,0.05)
   }
 }
.dialog-c-text {
  white-space: pre;
  overflow: auto;
  font-family: monospace;
}
</style>