import * as Cesium from 'cesium';
import aggregationImg from '@/assets/images/home/useUavHome/aggregation.png';
import uavImg from '@/assets/images/home/useUavHome/uavImg.png';

import eventImg from '@/assets/images/home/useEventOperate/event.png';

import DevicePopUpBox from '@/views/Home/useMapAggregation/DevicePopUpBox.vue';
import EventPopUpBox from '@/views/Home/useMapAggregation/EventPopUpBox.vue';

import { render } from 'vue';
import { useStore } from 'vuex';
import { getCenterPoint } from '@/utils/cesium/mapUtil';
import cesiumOperation from '@/utils/cesium-tsa';
import { getDeviceRegion, getDeviceRegionCount, getEventDetails, getMapEvents } from '@/api/home/aggregation';

/**
 * 机巢聚合功能
 */
export const useMapAggregation = type => {
  const { flyTo } = cesiumOperation();

  const singleImg = type === 'device' ? uavImg : eventImg;
  const mergeImg = type === 'device' ? aggregationImg : aggregationImg;
  const MapPopUpBox = type === 'device' ? DevicePopUpBox : EventPopUpBox;
  const styleTransform = type === 'device' ? 'translateY(-50%)' : 'translate(-50%,-110%)';

  let scalingJudgment = [
    { name: '县', splashedList: [], gJson: null, show: false, outline: {}, value: [0, 48651], height: 31753 },
    { name: '市', splashedList: [], gJson: null, show: false, outline: {}, value: [48651, 314863], height: 257731 },
    {
      name: '省',
      splashedList: [],
      gJson: null,
      show: false,
      outline: {},
      value: [314863, 3796280000],
      height: 1987280,
    },
  ];
  let viewer = null;
  let active = null;
  let handler = null;
  let positionC3 = null;
  let currentEntity = null;

  const store = useStore();
  const userAreaCode = computed(() => store.state.user.userInfo.detail.areaCode);
  const selectedAreaCode = computed(() => store.state.user.selectedAreaCode);


  // 确定缩放比例
  const determineScaling = () => {
    // console.log('确定缩放比例');
    if (!viewer) return;
    let height = viewer.camera.positionCartographic.height;
    // 根据高度展示对应的 gJson
    for (let [index, item] of scalingJudgment.entries()) {
      if (!item.show) return;
      if (height > item.value[0] && height <= item.value[1]) {
        if (active === item.name) return;
        active = item.name;
        removeEntities();
        removeLabel();
        renderOutline(item);
        if (!item.gJson && !item.splashedList?.length) return;
        item.gJson ? aggregation(item) : splashed(item);
        break;
      }
    }
  };

  // 转换为目录结构, 返回数组,
  function convertToHierarchy(code) {
    const codeStr = code.toString();
    const provinceCode = codeStr.slice(0, 2) + '0000';
    const cityCode = codeStr.slice(0, 4) + '00';
    if (codeStr.slice(2, 4) === '00' && codeStr.slice(4, 6) === '00') {
      return [provinceCode];
    } else if (codeStr.slice(4, 6) === '00') {
      return [provinceCode, cityCode];
    }
    return [provinceCode, cityCode, code];
  }

  // 获取设备聚合
  function getDeviceCount(areaCode) {
    return getDeviceRegionCount({ areaCode }).then(res => {
      return (res?.data?.data || [])
    });
  }
  // 获取设备散点
  function getDeviceList(areaCode) {
    return getDeviceRegion({ areaCode }).then(res => {
      return (res?.data?.data || []).map(i =>({...i,type}));
    });
  }

  // 事件散点
  let eventList = []
  function processChildren(childrens) {
    return (childrens || []).map(item => {
      const arr = processChildren(item.childrens);
      if (item.data){
        eventList = eventList.concat(item.data)
      }
      const returnObj = {
        total_device_count: item.number,
        region_code: item.id,
        region_name: item.name,
      };
      if (arr.length !== 0) {
        returnObj.childrens = arr;
      }
      return returnObj;
    });
  }

  // 获取事件聚合
  function getMapEventCount(areaCode) {
    return getMapEvents({ areaCode }).then(res => {
      const resData= res?.data?.data
      if (resData?.data){
        eventList = resData?.data
        return []
      }
      return processChildren(resData?.childrens);
    });
  }

  const findFun = (featItem, numItem) => Number(featItem.region_code.slice(0, 6)) === numItem.properties.adcode;
  const { VITE_APP_BASE,VITE_APP_ENV } = import.meta.env;
  const defaultDir =  `${VITE_APP_BASE}${VITE_APP_ENV === 'development' ? 'public/' : ''}geoJson/100000/`;

  const getFiler = async url => {
    const res = await fetch(url);
    return  await res.json()
  };
  const getOutLine = async (jsonPathPre, hierarchy) => {
    const parentGJson = await getFiler(`${defaultDir}${jsonPathPre}/index.json`);
    let features = parentGJson.features.find(
      item => item.properties.adcode === Number(hierarchy[hierarchy.length - 1])
    );
    return { type: 'FeatureCollection', features: [features] };
  };

  const injectData = (gJson, dataList) => {
    return {
      ...gJson,
      features: gJson.features.map(item => {
        const findData = dataList.find(item1 => findFun(item1, item))
        return { ...item, data: {...findData,type: type + 'Aggregation'} }
      }),
    };
  };

  const initMapData = async areaCode => {
    eventList = []
    if (!areaCode) return;
    const list = type === 'device' ? await getDeviceCount(areaCode) : await getMapEventCount(areaCode);
    const splashedList = type === 'device'
      ? await getDeviceList(areaCode)
      : eventList.map(i=>({eventId:i.id,latitude:Number(i.latitude),longitude:Number(i.longitude),type:'event'}))
    console.log(list, 'list');
    console.log(splashedList, 'splashedList');
    const hierarchy = convertToHierarchy(areaCode.slice(0, 6));
    const jsonPath = hierarchy.join('/');
    const jsonPathPre = hierarchy.slice(0, hierarchy.length - 1).join('/');
    scalingJudgment = scalingJudgment.map(item => ({ ...item, show: true }));
    scalingJudgment[0].gJson = null;
    scalingJudgment[0].splashedList = splashedList;
    active = null;
    // 省
    if (hierarchy.length === 1) {
      const gJson1 = await getFiler(`${defaultDir}${jsonPath}/indexDistrict.json`);
      const gJson2 = await getFiler(`${defaultDir}${jsonPath}/index.json`);
      scalingJudgment[1].gJson = {
        ...gJson1,
        features: gJson1.features.map(item => {
          const findData = list.flatMap(item => item.childrens || []).find(item1 => findFun(item1, item))
          return { ...item, data: {...findData,type: type + 'Aggregation'} }
        }),
      };
      scalingJudgment[2].gJson = injectData(gJson2, list);
    }
    // 市
    if (hierarchy.length === 2) {
      scalingJudgment[2].gJson = null;
      scalingJudgment[2].show = false;
      const gJson1 = await getFiler(`${defaultDir}${jsonPath}/index.json`);
      scalingJudgment[1].gJson = injectData(gJson1, list);
    }
    // 区县
    if (hierarchy.length === 3) {
      scalingJudgment[1].gJson = null;
      scalingJudgment[1].show = false;
      scalingJudgment[2].gJson = null;
      scalingJudgment[2].show = false;
    }
    // 轮廓
    const outlineGJson = await getOutLine(jsonPathPre, hierarchy);
    scalingJudgment.forEach(item => item.show && (item.outline = outlineGJson));
    const [longitude,latitude] = outlineGJson.features[0].properties.centroid
    flyTo({ longitude, latitude }, 0, scalingJudgment[(hierarchy.length-3) * (-1)].height);
  };

  watch(
    selectedAreaCode,
    async (newValue, oldValue) => {
      if (!viewer) return
      viewer.scene.postRender.removeEventListener(determineScaling)
      initMapData(newValue).then(()=>{
        viewer.scene.postRender.addEventListener(determineScaling)
      })
    },
    { deep: true }
  );

  //散点机巢
  function splashed(row) {
    row.splashedList.forEach(item => {
      viewer.entities.add({
        position: Cesium.Cartesian3.fromDegrees(item.longitude, item.latitude),
        label: {
          // 随机整数
          text: item.nickname,
          font: '12pt Source Han Sans CN',
          fillColor: Cesium.Color.WHITE,
          outlineColor: Cesium.Color.BLACK,
          outlineWidth: 2,
          style: Cesium.LabelStyle.FILL_AND_OUTLINE,
          verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
          pixelOffset: new Cesium.Cartesian2(0, -9),
        },
        billboard: {
          image: new Cesium.ConstantProperty(singleImg),
          width: 24,
          height: 24,
        },
        properties: {
          customData: {
            data: item,
          },
        },
      });
    });
  }

  // 渲染轮廓
  const renderOutline = item => {
    item.outline &&
    Cesium.GeoJsonDataSource.load(item.outline).then(dataSource => {
      viewer.dataSources.add(dataSource);
      const entities = dataSource.entities.values;
      entities.forEach(entity => {
        // 隐藏多边形填充
        entity.polygon.material = Cesium.Color.TRANSPARENT;
        entity.polygon.outline = false; // 关闭原生轮廓
        // 创建独立折线作为轮廓
        const positions = entity.polygon.hierarchy.getValue().positions;
        viewer.entities.add({
          polyline: {
            positions: positions,
            width: 5, // 直接设置宽度
            material: new Cesium.PolylineGlowMaterialProperty({
              glowPower: 0.5,
              color: Cesium.Color.AQUA,
            }),
            clampToGround: true, // 贴地显示
          },
        });
      });
    });
  };

  // 聚合机巢
  const aggregation = (item, flyTo) => {
    if (!item.gJson) return;
    const featuresList = item.gJson.features.map(item1 => {
      // const {lng,lat} = getCenterPoint(item1.geometry.coordinates[0][0])
      return {
        name: item1.properties.name,
        position: item1.properties.centroid,
        data: item1.data,
        id: item1.region_code,
      }
    });
    // 遍历特征并添加实体
    featuresList.forEach(feature => {
      if (!feature.position) return;
      const position = Cesium.Cartesian3.fromDegrees(feature.position[0], feature.position[1]);
      viewer.entities.add({
        position: position,
        label: {
          text: feature.name,
          font: '14pt Source Han Sans CN',
          fillColor: Cesium.Color.WHITE,
          outlineColor: Cesium.Color.BLACK,
          outlineWidth: 2,
          style: Cesium.LabelStyle.FILL_AND_OUTLINE,
          verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
          pixelOffset: new Cesium.Cartesian2(0, -9),
        },
      });
      viewer.entities.add({
        id: feature.id,
        position: position,
        label: {
          text: feature.data.total_device_count.toString(),
          font: '12pt Source Han Sans CN',
          fillColor: Cesium.Color.BLACK,
          style: Cesium.LabelStyle.FILL_AND_OUTLINE,
          eyeOffset: new Cesium.Cartesian3(0, 0, -10), // 让label "浮" 在广告牌前面
        },
        billboard: {
          image: new Cesium.ConstantProperty(mergeImg),
          width: 35,
          height: 35,
        },
        properties: {
          id: feature.id,
          customData: {
            data: feature.data,
          },
        },
      });
    });

    // 加载新的 GeoJSON 数据
    Cesium.GeoJsonDataSource.load(item.gJson).then(dataSource => {
      viewer.dataSources.add(dataSource);
      item.dataSource = dataSource; // 保存数据源以便后续删除
      // 获取数据源中的实体
      const entities = dataSource.entities.values;
      entities.forEach(entity => {
        entity.polygon.material = new Cesium.ColorMaterialProperty(
          Cesium.Color.YELLOW.withAlpha(0) // 透明填充
        );
        entity.polygon.outline = new Cesium.ConstantProperty(true); // 显示边框
        entity.polygon.outlineColor = new Cesium.ConstantProperty(Cesium.Color.AQUAMARINE);
      });
      flyTo &&
      viewer.flyTo(dataSource, {
        offset: new Cesium.HeadingPitchRange(
          0, // heading: 0 (朝向不变)
          Cesium.Math.toRadians(-90), // pitch: -90° (垂直向下)
          0 // range: 0 (默认距离)
        ),
        duration: 0.5,
      });
    });
  };

  // 获取弹框box
  const getLabelDom = data => {
    const vNode = h(MapPopUpBox, { data, removeLabel });
    const tooltipContainer = document.createElement('div');
    tooltipContainer.id = 'mapPopUpBox';
    tooltipContainer.style.position = 'absolute';
    tooltipContainer.style.transform = styleTransform;
    tooltipContainer.style.pointerEvents = 'none';
    document.querySelector('.page-index').append(tooltipContainer);
    render(vNode, tooltipContainer);
    return tooltipContainer;
  };

  // 弹框位置刷新
  const labelBoxRender = () => {
    let dom = document.querySelector('#mapPopUpBox');
    if (!dom) {
      dom = getLabelDom(currentEntity.properties.customData._value.data);
    }
    const screenPosition = viewer.scene.cartesianToCanvasCoordinates(positionC3);
    if (screenPosition) {
      dom.style.left = `${screenPosition.x}px`;
      dom.style.top = `${screenPosition.y}px`;
      dom.style.display = 'block';
    }
  };

  // 左键单机事件
  const singleMachineEvent = async click => {
    const pickedObject = viewer.scene.pick(click.position);
    if (Cesium.defined(pickedObject) && pickedObject.id) {
      const entity = pickedObject.id;
      currentEntity = entity;
      positionC3 = entity?.position?._value;
      if (!positionC3) return;
      removeLabel();
      const customData = entity.properties.customData._value.data;
      console.log('customData', customData);
      switch (customData.type) {
        case 'deviceAggregation':
          viewer.scene.postRender.addEventListener(labelBoxRender);
          break;
        case 'device':
          store.commit('setSingleUavHome', { id: '123' });
          break;
        case 'eventAggregation':
          break;
        case 'event':
          viewer.scene.postRender.addEventListener(labelBoxRender);
          break;
        default:
          break;
      }
    }
  };

  const removeDom = () => {
    const dom = document.querySelector('#mapPopUpBox');
    if (dom && dom.parentNode) {
      dom.parentNode.removeChild(dom);
    }
  };

  // 移除 点 和 gjson 实体
  const removeEntities = () => {
    viewer.dataSources?.removeAll(true);
    viewer.entities?.removeAll();
  };
  // 移除弹框标签
  const removeLabel = () => {
    viewer.scene.postRender.removeEventListener(labelBoxRender);
    removeDom();
  };

  // 移除所有监听事件，变量置空
  const removeAll = () => {
    removeEntities();
    removeLabel();
    // viewer.camera.moveEnd.removeEventListener(determineScaling);
    viewer.scene.postRender.removeEventListener(determineScaling)
    handler?.removeInputAction(Cesium.ScreenSpaceEventType.LEFT_CLICK);
    handler?.destroy();
    viewer = null;
    active = null;
    handler = null;
    positionC3 = null;
    currentEntity = null;
  };
  const init = () => {
    viewer = window.$viewer;
    viewer.scene.postRender.removeEventListener(determineScaling)
    initMapData(selectedAreaCode.value || userAreaCode.value).then(()=>{
      viewer.scene.postRender.addEventListener(determineScaling)
    })
    handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
    handler.setInputAction(singleMachineEvent, Cesium.ScreenSpaceEventType.LEFT_CLICK);

  };
  onBeforeUnmount(() => {});
  // onMounted(() => {
  //   nextTick(() => {
  //     viewer = window.$viewer;
  //     handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
  //     handler.setInputAction(singleMachineEvent, Cesium.ScreenSpaceEventType.LEFT_CLICK);
  //   });
  // });

  return { init, removeAll };
};