import * as Cesium from 'cesium';
import data2 from '@/assets/images/home/homeRight/data2.png';
import eventImg from '@/assets/images/home/useEventOperate/event.png';
import jiangxishi from '@/assets/geojson/jiangxishi.json';
import jiangxi from '@/assets/geojson/jiangxi.json';
import zg from '@/assets/geojson/zg.json';
import EventPopUpBox from './EventPopUpBox.vue';
import { render } from 'vue';
import store from '@/store';

/**
 * 事件聚合功能
 */
export const useEventOperate = () => {
	const scalingJudgment = [
		{ name: '县', value: [0, 48651], gJson: null },
		{ name: '市', value: [48651, 314863], gJson: jiangxishi },
		{ name: '省', value: [314863, 1169651], gJson: jiangxi },
		{ name: '国', value: [1169651, 37962800], gJson: zg },
	]
	let viewer = null
	let active = null
	let handler = null
	let positionC3 = null
	const listenerHeight = () => {
		determineScaling()
		viewer.camera.moveEnd.addEventListener(determineScaling)
	}

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

	//散点机巢
	function splashed() {
		for (let i = 0; i < 50; i++) {
			viewer.entities.add({
				position: Cesium.Cartesian3.fromDegrees(
					115.89 + Math.random() * 0.2,
					28.68 + Math.random() * 0.2
				),
				label: {
					// 随机整数
					text: Math.floor(Math.random() * 100) + '号事件',
					font: '14pt monospace',
					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(eventImg),
					width: 24,
					height: 24,
				},
			})
		}
	}

	// 聚合机巢
	const aggregation = item => {
		const featuresList = item.gJson.features.map(item => ({
			name: item.properties.name,
			position: item.properties.center,
		}))
		// 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({
				id: feature.id,
				position: position,
				label: {
					// 随机整数
					text: Math.floor(Math.random() * 100) + '个事件',
					font: '14pt monospace',
					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(data2),
					width: 24,
					height: 24,
				},
				properties: {
					id: feature.id,
					customData: {
						name: feature.name,
					},
				},
			})
		})
		// 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.YELLOW) // 黑色边框
			})
		})
	}

	// 获取弹框box
	const getLabelDom = () => {
		const vNode = h(EventPopUpBox, { data: '参数', removeLabel })
		const tooltipContainer = document.createElement('div')
		tooltipContainer.id = 'mapPopUpBox'
		tooltipContainer.style.position = 'absolute'
		tooltipContainer.style.transform = 'translate(-50%,-110%)'
		tooltipContainer.style.pointerEvents = 'none'
		document.querySelector('.page-index').append(tooltipContainer)
		render(vNode, tooltipContainer)
		return tooltipContainer
	}

	// 弹框位置刷新
	const labelBox = () => {
		store.commit('setSingleUavHome', {
			id: '123',
		})
		let dom = document.querySelector('#mapPopUpBox')
		if (!dom) {
			dom = getLabelDom()
		}
		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 = click => {
		const pickedObject = viewer.scene.pick(click.position)
		if (Cesium.defined(pickedObject) && pickedObject.id) {
			const entity = pickedObject.id
			positionC3 = entity?.position?._value
			if (!positionC3) return
			viewer.scene.postRender.removeEventListener(labelBox)
			viewer.scene.postRender.addEventListener(labelBox)
		}
	}

	// 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(labelBox)
		const dom = document.querySelector('#mapPopUpBox')
		if (dom && dom.parentNode) {
			dom.parentNode.removeChild(dom)
		}
	}

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

	return { init, removeAll }
}