<template>
  <div class="communityNode-component">
    <div class="graph-container" id="container"></div>
  </div>
</template>

<script setup>
import { onMounted, defineEmits, inject } from "vue"
import * as echarts from "echarts"
import nodeHoverImg from "@/assets/images/nodeHover.png"
let chart = null
const emit = defineEmits(["click:node", "click:edge"])

const initChart = async () => {
  chart = echarts.init(document.getElementById("container"))

  //处理社团节点
  const nodes = Object.values(inject("communityNodeList") ?? []).map((item) => ({
    id: parseInt(item.id),
    name: parseInt(item.id),
    isIncludePredictNodes: item.isIncludePredictNodes,
    nodesNum: item.nodesNum,
    neighbors: item.neighbors.map((item) => ({ ...item, name: parseInt(item.id) })),
    category: item.isIncludePredictNodes ? 1 : 0
  }))

  //处理连边
  const links = []
  const edgeSet = new Set() //去除重复边
  nodes.forEach((communityNode) => {
    communityNode.neighbors.forEach((communityNei) => {
      const key = [communityNode.name, communityNei.name].sort().join("-")
      if (edgeSet.has(key)) return
      links.push({
        source: communityNode.name,
        target: communityNei.name,
        edge: communityNei.isHidden ? 1 : 0, //该边存在互动隐关系则权值为1，否则为0
        lineStyle: {
          width: communityNei.isHidden ? 4 : 1, // 无互动=细线，有互动=加粗
          color: communityNei.isHidden ? "#f8bf38" : "#37ACD7", // 无互动=灰色，有互动=黄色
          type: communityNei.isHidden ? "dashed" : "solid", // 无互动=实线，有互动=虚线
          dashArray: [2, 1] // 2像素实线，1像素空白
        }
      })
      edgeSet.add(key)
    })
  })

  const data = { nodes, links }

  const categories = [
    { name: "普通社团", category: 0 },
    { name: "含预测节点社团", category: 1 },
    { name: "互动隐关系", category: 2 }
  ]
  const option = {
    //图例配置
    legend: [
      {
        data: categories.map((c) => ({
          name: c.name,
          itemStyle: {
            color:
              c.category === 0
                ? new echarts.graphic.LinearGradient(1, 0, 0, 0, [
                    { offset: 1, color: "#1a3860" }, // 深蓝渐变
                    { offset: 0.5, color: "#38546b" },
                    { offset: 0, color: "#5fb3b3" }
                  ])
                : c.category === 1
                  ? new echarts.graphic.LinearGradient(1, 0, 0, 0, [
                      { offset: 0, color: "#9eec9c" }, // 绿色渐变
                      { offset: 0.37, color: "#aef295" },
                      { offset: 1, color: "#c2f989" }
                    ])
                  : new echarts.graphic.LinearGradient(1, 0, 0, 0, [
                      { offset: 0, color: "#ff9a9e" }, // 红色渐变（用于 category === 2）
                      { offset: 0.5, color: "#fad0c4" },
                      { offset: 1, color: "#fbc2eb" }
                    ])
          }
        })),
        right: 21,
        bottom: 70,
        icon: "circle",
        orient: "vertical",
        itemWidth: 16,
        itemHeight: 16,
        itemGap: 12,
        backgroundColor: "rgba(0,67,125,0.56)", // 半透明深蓝
        borderRadius: 8, // 圆角
        borderColor: "#c2f2ff", // 淡蓝色边框
        borderWidth: 0.3,
        padding: [12, 20, 12, 20], // 上右下左
        textStyle: {
          color: "#fff",
          fontSize: 16,
          fontWeight: "normal"
        }
      }
    ],
    //hover上去的窗口
    tooltip: {
      trigger: "item",
      backgroundColor: "rgba(0,0,0,0)", // 透明背景
      borderColor: "rgba(0,0,0,0)", // 透明边框
      borderWidth: 0,
      extraCssText: "box-shadow:none;padding:0;",
      formatter: function (params) {
        if (params.dataType === "node") {
          return `<div
                    style="
                    width: 107px;
                    height: 68px;
                    border-radius: 4px;
                    background: url('${nodeHoverImg}');
                    background-size: cover;
                    background-position: center;
                    background-repeat: no-repeat;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    flex-direction: column;
                    ">
                <div style="color:#fff;letter-spacing: 0.14px;">
                    <div >节点数：${params.data.nodesNum}</div>
              </div>
            </div>`
        }
        return ""
      }
    },
    edgeLabel: {
      show: false,
      position: "middle",
      formatter: function (params) {
        return params.data.edge
      },
      fontSize: 14
    },
    emphasis: {
      edgeLabel: {
        show: true,
        color: "#fff",
        fontSize: 18,
        textShadowColor: "#fff",
        textShadowBlur: 0,
        textShadowOffsetX: 0,
        textShadowOffsetY: 0
      }
    },
    series: [
      {
        type: "graph",
        layout: "force",
        animation: false,
        draggable: true,
        roam: true,
        zoom: 0.3,
        categories: categories,

        force: {
          edgeLength: 2500,
          repulsion: 4000,
          gravity: 0.4,
          friction: 0.02,
          coolingFactor: 0.1
        },

        animationDurationUpdate: 3500, // 节点移动更平滑
        data: data.nodes.map((node) => ({
          ...node,
          symbolSize: node.nodesNum / 40 < 30 ? 40 : node.nodesNum / 40,
          itemStyle: {
            color:
              node.isIncludePredictNodes === false
                ? new echarts.graphic.RadialGradient(0.98, 0.38, 0.9, [
                    { offset: 1, color: "#1a3860" }, // 最左侧
                    { offset: 0.5, color: "#38546b" }, // 中间
                    { offset: 0, color: "#5fb3b3" } // 最右侧
                  ])
                : new echarts.graphic.RadialGradient(0.98, 0.38, 0.9, [
                    // anchorCount为1的节点渐变（原配色）
                    { offset: 0, color: "#9eec9c" },
                    { offset: 0.37, color: "#aef295" },
                    { offset: 1, color: "#c2f989" }
                  ]),

            opacity: 1,
            borderColor: "#46C6AD",
            borderWidth: 1,
            shadowBlur: 4,
            borderType: "dashed",
            shadowColor: "rgba(19, 27, 114, 0.25)"
          },
          emphasis: {
            itemStyle: {
              shadowBlur: 20,
              shadowColor: "#c4a651",
              borderColor: "#fcd267",
              borderWidth: node.isIncludePredictNodes == false ? 1 : 5,
              borderType: "solid"
            }
          }
        })),
        links: data.links,
        lineStyle: {
          color: "#37ACD7",
          width: 1
        },
        emphasis: {
          // 高亮配置
          focus: "adjacency", // 高亮相邻节点
          lineStyle: {
            // 高亮时线条样式
            width: 10 // 线条宽度(10)
          }
        }
      }
    ]
  }
  chart.setOption(option)
}

const handleClickNode = () => {
  chart.on("click", function (params) {
    if (params.dataType === "node") {
      emit("click:node", params.data)
    } else if (params.dataType == "edge") {
      const { data } = params
      if (data.edge) {
        emit("click:edge", data)
      }
    }
  })
}

onMounted(async () => {
  await initChart()
  handleClickNode()
})
</script>

<style scoped lang="less">
.communityNode-component {
  width: 100%;
  height: 100%;
  position: relative;
  .graph-container {
    width: 100%;
    height: 93%;
  }
}
</style>
