<template>
  <div class="app-container home">
    <!-- Cesium地图容器 -->
    <div id="cesiumContainer" class="cesium-container"></div>
  </div>
</template>

<script>
import { getTokenApi } from "@/api/token";
import { localStg } from "@/utils/storage";
export default {
  name: "Index",
  data() {
    return {
      // 版本号
      version: "3.8.9",
      // Cesium查看器实例
      viewer: null,
      tileset: null,
      personnelList: [
        {
          longitude: 121.70710830038986,
          latitude: 36.853636402927986,
          height: 100,
          name: "张三",
          status: "online", // 在线
          avatar: "/static/images/avatars/zhangsan.png", // 头像
        },
        {
          longitude: 121.70810830038986,
          latitude: 36.854636402927986,
          height: 100,
          name: "李四",
          status: "offline", // 离线
          avatar: "/static/images/avatars/lisi.png", // 头像
        },
        // 其他人员数据...
      ],
      intervaler: null,
      bgEntities: {}, // 所有的key都对应一个实体对象。而人员的实体对应的key不是数字。
    };
  },
  mounted() {
    // 组件挂载后初始化地图
    this.initCesium();
    // 监听窗口大小变化
    window.addEventListener("resize", this.handleResize);
  },
  beforeMount() {
    localStg.set("token", 222233);

    if (localStg.get("token")) {
      return;
    }
    // 组件挂载前获取token
    getTokenApi().then((res) => {
      console.log("token", res);
      localStg.set("token", res.data.data);
    });
  },
  beforeDestroy() {
    // 清理事件监听
    window.removeEventListener("resize", this.handleResize);

    // 清理地图资源
    if (this.viewer) {
      this.viewer.destroy();
      this.viewer = null;
    }
    // 清理点击事件处理器
    if (this.clickHandler) {
      this.clickHandler.destroy();
      this.clickHandler = null;
    }
    // 组件销毁前清理地图资源
    if (this.viewer) {
      this.viewer.destroy();
      this.viewer = null;
    }
    // 清理定时器
    if (this.intervaler) {
      clearInterval(this.intervaler);
    }

    // 清空实体引用
    this.bgEntities = {};
  },
  methods: {
    // 新增：清除实体
    clearEntities() {
      if (this.viewer && this.bgEntities) {
        for (let key in this.bgEntities) {
          this.viewer.entities.remove(this.bgEntities[key]);
          delete this.bgEntities[key];
        }
      }
    },

    /**
     * 初始化Cesium地图
     */
    async initCesium() {
      Cesium.Ion.defaultAccessToken =
        "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI0ZDAxZGFhYy02MjJlLTRiNzktODNhZi00N2VjZGY0NTk4YmIiLCJpZCI6Mjc0NDAxLCJpYXQiOjE3NjMzNDYwNTR9.ZQW2DZ4KaMGbHuwrtIbyI6EdSSvgMJUHmmD74eZW7PQ";
      try {
        // 创建Cesium Viewer实例
        this.viewer = new Cesium.Viewer("cesiumContainer", {
          // 设置地图提供者，这里使用默认的Bing Maps
          imageryProvider: new Cesium.BingMapsImageryProvider({
            url: "https://dev.virtualearth.net",
            key: "AgcbDCAOb9zMfquaT4Z-MdHfx--9wUNrLRiiS7rIElFx8f-4lLulxZ0QnhqX5Lm6",
            mapStyle: Cesium.BingMapsStyle.AERIAL,
          }),
          // 配置是否显示各种控件
          animation: false, // 动画控件
          baseLayerPicker: true, // 底图选择器
          fullscreenButton: false, // 全屏按钮
          geocoder: false, // 地址搜索
          homeButton: false, // 主页按钮
          infoBox: false, // 信息框
          sceneModePicker: false, // 场景模式选择器
          selectionIndicator: false, // 选择指示器
          timeline: false, // 时间线
          navigationHelpButton: false, // 导航帮助按钮
          navigationInstructionsInitiallyVisible: false,
          // 设置初始视图位置（中国区域）
          center: Cesium.Cartesian3.fromDegrees(104.06, 30.67, 10000000),
        });

        this.viewer.scene.camera.setView({
          // 视角-环翠
          duration: 1,
          destination: {
            x: -2739843.563038797,
            y: 4357442.794747324,
            z: 3880768.3292693933,
          },
          orientation: {
            heading: 6.037000745578596,
            pitch: -1.2499586064720978,
            roll: 0.000005306352659495417,
          },
        });

        // 隐藏Cesium logo
        this.viewer._cesiumWidget._creditContainer.style.display = "none";

        const VUE_APP_GIS =
          "http://192.168.2.11:8080/Apps/assets/media/gaoquyingji";
        try {
          const tileset = await Cesium.Cesium3DTileset.fromUrl(
            VUE_APP_GIS + "/tiles/01_guanwei/tileset.json"
          );
          this.viewer.scene.primitives.add(tileset);

          console.log("倾斜摄影模型加载成功tileset", tileset);

          if (tileset) {
            this.tileset = tileset;
            this.locateToTileset();
            // 添加鼠标点击事件监听器，用于控制人员信息label显示
            this.addEntityClickHandler();
          }
        } catch (error) {
          console.error(`加载倾斜摄影模型失败: ${error}`);
        }

        console.log("Cesium地图初始化成功");
      } catch (error) {
        console.error("Cesium地图初始化失败:", error);
      }
    },

    /**
     * 获取倾斜摄影模型的经纬度并将摄像机视角转向模型上方
     */
    locateToTileset() {
      if (!this.tileset || !this.viewer) {
        console.error("模型或视图未准备就绪");
        return;
      }

      try {
        // 获取模型的边界球
        const boundingSphere = this.tileset.boundingSphere;

        if (!boundingSphere) {
          console.error("无法获取模型边界");
          return;
        }

        // 获取模型中心点的笛卡尔坐标
        const center = boundingSphere.center;

        // 将笛卡尔坐标转换为经纬度坐标
        const cartographic = Cesium.Cartographic.fromCartesian(center);
        const longitude = Cesium.Math.toDegrees(cartographic.longitude);
        const latitude = Cesium.Math.toDegrees(cartographic.latitude);
        const height = cartographic.height;

        console.log("倾斜摄影模型中心点经纬度:", {
          longitude: longitude,
          latitude: latitude,
          height: height,
        });

        // 计算合适的观察距离 - 基于模型半径的倍数
        const distance = boundingSphere.radius * 2.5; // 可以根据需要调整倍数

        // 设置相机位置在模型上方
        const cameraPosition = Cesium.Cartesian3.fromRadians(
          cartographic.longitude,
          cartographic.latitude,
          height + distance // 相机高度为模型最高点加上观察距离
        );

        // 计算相机看向模型中心的方向
        const heading = Cesium.Math.toRadians(0); // 方向角
        const pitch = Cesium.Math.toRadians(-90); // 俯仰角 - 负数表示向下看
        const roll = Cesium.Math.toRadians(0); // 翻滚角

        // 使用flyTo方法平滑过渡到目标位置
        this.viewer.camera.flyTo({
          destination: cameraPosition,
          orientation: {
            heading: heading,
            pitch: pitch,
            roll: roll,
          },
          duration: 2, // 过渡时间2秒
          complete: () => {
            console.log("相机已成功定位到模型上方");
            // this.createPersonModel(); // 定位后创建人员模型
            // 根据当前选择的类型创建相应的模型
            this.createPersonModel(); // 定位后创建人员模型
          },
        });
      } catch (error) {
        console.error("定位到模型上方失败:", error);
      }
    },

    personCardList(fn) {
      // 将笛卡尔坐标转换为经纬度坐标
      const cartographic = Cesium.Cartographic.fromCartesian({
        x: -2686273.730145489,
        y: 4293961.185794622,
        z: 3863430.5618300107,
      });
      const baseLongitude = Cesium.Math.toDegrees(cartographic.longitude);
      const baseLatitude = Cesium.Math.toDegrees(cartographic.latitude);
      const baseHeight = cartographic.height + 1;

      console.log("人员经纬度基准点:", {
        longitude: baseLongitude,
        latitude: baseLatitude,
        height: baseHeight,
      });

      // 清除现有的人员列表
      this.personnelList = [];

      // 生成10个不同的经纬度坐标
      const maxOffset = 0.00005;

      for (let index = 0; index < 10; index++) {
        // 生成随机偏移量
        const lngOffset = (Math.random() - 0.5) * 2 * maxOffset;
        const latOffset = (Math.random() - 0.5) * 2 * maxOffset;

        this.personnelList.push({
          lng: baseLongitude + lngOffset,
          lat: baseLatitude + latOffset,
          height: baseHeight,
          perName: "张三" + index,
          status: "online", // 在线
          avatar: "/static/images/avatars/zhangsan.png", // 头像
        });
      }

      fn(this.personnelList);
    },

    // 修改：更新点击事件处理器，支持车辆显示
    addEntityClickHandler() {
      // 创建鼠标事件处理器
      this.clickHandler = new Cesium.ScreenSpaceEventHandler(
        this.viewer.canvas
      );

      // 监听鼠标左键点击事件
      this.clickHandler.setInputAction((click) => {
        // 检测点击位置的实体
        const pickedObject = this.viewer.scene.pick(click.position);

        // 修复条件判断：检查是否有info属性
        if (
          Cesium.defined(pickedObject) &&
          pickedObject.id &&
          pickedObject.id.info
        ) {
          // 获取点击的实体
          const entity = pickedObject.id;
          const entityInfo = entity.info;

          // 如果已有详细信息label，则移除它
          if (entity.detailLabel) {
            this.viewer.entities.remove(entity.detailLabel);
            delete entity.detailLabel;
            return;
          }

          console.log("点击实体了", entityInfo);

          // 根据实体类型显示不同的信息
          let labelText = "";
          // 人员信息
          labelText = `${entityInfo.perName}\n状态: ${
            entityInfo.status === "online" ? "在线" : "离线"
          }\n高度: ${entityInfo.height.toFixed(2)}m`;

          // 创建详细信息label
          const detailLabel = this.viewer.entities.add({
            position: entity.position.getValue(),
            label: {
              text: labelText,
              font: "14px 微软雅黑",
              backgroundColor: Cesium.Color.fromCssColorString("#173349"),
              showBackground: true,
              fillColor: Cesium.Color.WHITE,
              pixelOffset: new Cesium.Cartesian2(0, -60),
              eyeOffset: new Cesium.Cartesian3(0, 0, -10),
              horizontalOrigin: Cesium.HorizontalOrigin.CENTER,
              verticalOrigin: Cesium.VerticalOrigin.TOP,
              scaleByDistance: new Cesium.NearFarScalar(1000, 1, 500000, 0.5),
              disableDepthTestDistance: Number.POSITIVE_INFINITY, // 确保始终显示在最前面
            },
          });

          // 将详细信息label关联到实体，便于后续管理
          entity.detailLabel = detailLabel;
        }
      }, Cesium.ScreenSpaceEventType.LEFT_CLICK);
    },

    // 处理窗口大小变化
    handleResize() {
      // 重新调整Cesium视图大小
      if (this.viewer) {
        this.viewer.resize();
      }

      // 重新绘制图表
      const chartContainer = document.getElementById("trendChart");
      if (chartContainer && chartContainer.firstChild) {
        chartContainer.removeChild(chartContainer.firstChild);
        this.drawTrendChart();
      }
    },
    // 1. 提取通用实体创建函数
    createEntity(item, type) {
      const isPerson = type === "person";
      const idField = isPerson ? "perName" : "vehicleName";
      const labelColor = isPerson ? Cesium.Color.YELLOW : Cesium.Color.CYAN;
      const iconPath = isPerson
        ? "/poi-marker-default.png"
        : "/poi-marker-vehicle.png";

      let lng = Number(item.lng);
      let lat = Number(item.lat);
      let height = Number(item.height);
      let position = Cesium.Cartesian3.fromDegrees(lng, lat, height);

      console.log(item[idField], position);

      // 创建实体
      let entity = this.viewer.entities.add({
        position: position,
        label: {
          text: item[idField],
          font: "16px",
          backgroundColor: Cesium.Color.fromCssColorString("#173349"),
          showBackground: true,
          fillColor: labelColor,
          depthTestAgainstTerrain: false,
          pixelOffset: new Cesium.Cartesian2(0, -35),
        },
        billboard: {
          image: iconPath,
          scale: 0.5,
          heightReference: Cesium.HeightReference.CLAMP_TO_3D_TILE,
        },
        description: `<div><h4>${item[idField]}${item.status}</h4></div>`,
        fixedFrame: Cesium.Transforms.eastNorthUpToFixedFrame(position),
      });

      entity.info = item;
      entity.type = type;
      this.bgEntities[item[idField]] = entity;

      return entity;
    },

    // 2. 提取实体更新函数
    updateEntity(entity, item) {
      let position = Cesium.Cartesian3.fromDegrees(
        item.lng,
        item.lat,
        item.height
      );
      entity.position.setValue(position);
      entity.fixedFrame = Cesium.Transforms.eastNorthUpToFixedFrame(position);
    },

    // 3. 提取批量创建实体的函数
    createEntities(entityList, type) {
      const isPerson = type === "person";
      const idField = isPerson ? "perName" : "vehicleName";

      for (let item of entityList) {
        this.createEntity(item, type);
      }
    },

    // 4. 提取批量更新实体的函数（增量更新模式）
    updateEntities(entityList, type) {
      const isPerson = type === "person";
      const idField = isPerson ? "perName" : "vehicleName";

      for (let item of entityList) {
        let entity = this.bgEntities[item[idField]];
        if (entity && entity.type === type) {
          // 更新现有实体
          this.updateEntity(entity, item);
        } else {
          // 创建新实体
          this.createEntity(item, type);
        }
      }
    },

    // 5. 提取定时器逻辑为可重用函数
    setupEntityUpdateInterval(type, dataGenerator, interval = 10000) {
      // 清除现有定时器
      if (this.intervaler) {
        clearInterval(this.intervaler);
        this.intervaler = null;
      }

      // 设置新的定时器
      this.intervaler = setInterval(() => {
        console.log(`开始获取实时${type === "person" ? "人员" : "车辆"}数据`);

        // 生成或获取最新数据
        if (typeof dataGenerator === "function") {
          dataGenerator();
        }

        const entityList =
          type === "person" ? this.personnelList : this.vehicleList;

        // 更新实体（这里可以选择清除重建或增量更新）
        // 方案1：清除所有实体后重建
        this.clearEntities();
        this.createEntities(entityList, type);

        // 方案2：增量更新（推荐，性能更好）
        // this.updateEntities(entityList, type);
      }, interval);
    },

    // 修改后的createPersonModel方法
    createPersonModel() {
      // 清除现有定时器
      if (this.intervaler) {
        clearInterval(this.intervaler);
        this.intervaler = null;
      }

      // 清除现有实体
      this.clearEntities();

      // 立即生成并显示人员实体
      console.log("立即创建人员实体");
      this.personCardList((list) => {
        console.log("人员数据", this.personnelList);
        this.createEntities(this.personnelList, "person");
      });

      // 设置定时刷新
      this.setupEntityUpdateInterval("person", () => {
        this.personCardList(() => {
          console.log("人员数据", this.personnelList);
        });
      });
    },
  },
};
</script>

<style scoped lang="scss">
.home {
  width: 100%;
  height: 100vh;
  position: relative;
  overflow: hidden;

  blockquote {
    padding: 10px 20px;
    margin: 0 0 20px;
    font-size: 17.5px;
    border-left: 5px solid #eee;
  }
  hr {
    margin-top: 20px;
    margin-bottom: 20px;
    border: 0;
    border-top: 1px solid #eee;
  }
  .col-item {
    margin-bottom: 20px;
  }

  ul {
    padding: 0;
    margin: 0;
  }

  font-family: "open sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 13px;
  color: #676a6c;
  overflow-x: hidden;

  ul {
    list-style-type: none;
  }

  h4 {
    margin-top: 0px;
  }

  h2 {
    margin-top: 10px;
    font-size: 26px;
    font-weight: 100;
  }

  p {
    margin-top: 10px;

    b {
      font-weight: 700;
    }
  }

  .update-log {
    ol {
      display: block;
      list-style-type: decimal;
      margin-block-start: 1em;
      margin-block-end: 1em;
      margin-inline-start: 0;
      margin-inline-end: 0;
      padding-inline-start: 40px;
    }
  }

  // Cesium容器样式
  .cesium-container {
    // width: 100vw;
    // height: 100vh;
    width: 87vw;
    height: 87vh;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
  }
}
</style>