<template>
    <div id="map-container"></div>
</template>

<script setup>
import { ref, onMounted, onUnmounted } from "vue";
import AMapLoader from "@amap/amap-jsapi-loader";
import eventBus from "@/api/eventBus";
import { convertPointToArray } from "@/utils/index";
import { deepClone } from "@/common/commonFun";

const map = ref(null);
const mouseTool = ref(null);
const selectedArea = ref(null);
const selectedPoints = ref([]);
const allPoints = ref([]);
const defalutAllPoints = ref([])
const pointList = ref([])

const mapEventType = ref('rectangle')

// 自定义圆点样式
const createMarkerContent = (color = 'rgba(0, 0, 0, 0.4)') => {
    return `
        <div style="
            width: 15px;
            height: 15px;
            background-color: ${color};
            border: 1px solid #fff;
            border-radius: 50%;
        ">
        </div>
    `;
}

//高亮样式
const createMarkerImg = () => {
    return `
        <img style="width: 38px;height: 38px;" src="${require('@/assets/images/map/status/active-icon.png')}">
    `;
}
// 初始化地图
const initMap = async () => {
    try {
        const AMap = await AMapLoader.load({
            key: "41769169f0f157e13a197e7eb0dd7b5b", // 替换为你的高德地图 Key
            version: "2.0", // SDK 版本
            plugins: ["AMap.MouseTool"], // 加载 MouseTool 插件
        }).then((AMap) => {
            // 创建地图实例
            map.value = new AMap.Map("map-container", {
                zoom: 18, // 初始缩放级别
                center: [113.6149629 ,23.58594117],
                layers: [
                    // 卫星
                    new AMap.TileLayer.Satellite(),
                ],
            });

            // 初始化 MouseTool
            mouseTool.value = new AMap.MouseTool(map.value);
            
            startRectangleSelection()

            // 监听框选完成事件
            mouseTool.value.on("draw", (event) => {
                if(mapEventType.value==='click') return
                const { obj} = event;
                if (obj instanceof AMap.Rectangle) {
                    selectedArea.value = obj;
                    map.value.remove(selectedArea.value);
                    checkPointsInArea(); // 检查框选区域内的点位
                }
            });

        });
    } catch (error) {
        console.error("地图加载失败:", error);
    }
};

//重置数据
const resetData = () =>{
    allPoints.value = defalutAllPoints.value
    allPoints.value.forEach(item =>{
        item.icon.setContent(createMarkerContent(item.color))
        item.icon.setOffset(new window.AMap.Pixel(-7, -7))
        item.type = 'defalutIcon'
    })
}

//初始化数据
const initData = () =>{
    defalutAllPoints.value = []
    totalList.value.forEach(item => map.value.remove(item.icon))
    totalList.value = []
    allPoints.value.forEach(item =>{
        item.icon = new window.AMap.Marker({
            position: item.lngLat,
            map: map.value,
            content: createMarkerContent(item.color),
            offset: new window.AMap.Pixel(-7, -7),
        });
        item.type = 'defalutIcon'

        // 绑定点击事件
        item.icon.on('click', () => {
            mapEventType.value = 'click'
            if(item.type === 'defalutIcon'){
                item.icon.setContent(createMarkerImg()); 
                item.icon.setOffset(new window.AMap.Pixel(-18, -18))
                item.type = 'activeIcon'
                const arr = pointList.value.filter(ele => ele.id === item.id)
                if(arr.length===0){
                    pointList.value.push(item)
                }
            }else{
                item.icon.setContent(createMarkerContent(item.color)); 
                item.icon.setOffset(new window.AMap.Pixel(-7, -7))
                item.type = 'defalutIcon'
            }

            setTimeout(()=>{
                mapEventType.value = 'draw'
            },100)
        });
        defalutAllPoints.value.push(item)
    })
    map.value.setFitView(null, false, [0, 0, 0, 0]);
}

// 开始框选
const startRectangleSelection = () => {
    if (mouseTool.value) {
        mouseTool.value.rectangle({
            strokeColor: "#ffffff", // 框选区域边框颜色
            strokeOpacity: 1, // 边框透明度
            strokeWeight: 2, // 边框宽度
            fillColor: "#000000", // 填充颜色
            fillOpacity: 0.5, // 填充透明度
        }); // 启用矩形框选工具
        map.value.setDefaultCursor("crosshair");
    }
};

 // 停止绘制矩形
const stopDrawRectangle = () => {
    mouseTool.value.close(); // 关闭 mouseTool
    map.value.setDefaultCursor("default");
};

// 清除框选
const clearSelection = () => {
    if (selectedArea.value) {
        map.value.remove(selectedArea.value); // 移除框选区域
        selectedArea.value = null;
    }
    resetData()                                                                                                                                                                                                                                                                                                                                      
    selectedPoints.value = []; // 清空选中的点位
};

// 检查框选区域内的点位
const checkPointsInArea = () => {
    if (!selectedArea.value) return;
    const bounds = selectedArea.value.getBounds(); // 获取框选区域的边界
    selectedPoints.value = allPoints.value.filter((point) => {
        return bounds.contains(point.lngLat); // 判断点位是否在框选区域内
    });
    
    selectedPoints.value.forEach(item =>{
        if(item.type==='defalutIcon'){
            item.icon.setContent(createMarkerImg())
            item.icon.setOffset(new window.AMap.Pixel(-18, -18))
            item.type = 'activeIcon'
        }else{
            item.icon.setContent(createMarkerContent(item.color))
            item.icon.setOffset(new window.AMap.Pixel(-7, -7))
            item.type = 'defalutIcon'
        }
    })
};

const speciesArr = ref([])
const getList = () =>{
    const params = {
        farmId:sessionStorage.getItem('farmId'),
        regionId:sessionStorage.getItem('regionId')
    }
    VE_API.variety.pointList(params).then(res =>{
        allPoints.value = res.data.map(item =>{
            const bgColor = speciesArr.value.filter(ele =>ele.speciesItemId === item.speciesItemId)
            return{
                ...item,
                color:bgColor[0].color,
                lngLat:convertPointToArray(item.point)
            }
        })
        initData()
    })
}

const totalList = ref([])

function getSelectPoint(){
    totalList.value = selectedPoints.value.concat(pointList.value)
    const arr = totalList.value.filter(item =>item.type==='activeIcon')
    return arr
}

defineExpose({getSelectPoint})

function getSpeciesList(arr){
    speciesArr.value = arr
    getList()
}

// 组件挂载时初始化地图
onMounted(() => {
    initMap()
    eventBus.on('handle:clear',clearSelection)
    eventBus.on('species:list',getSpeciesList)
    eventBus.on('handle:start',startRectangleSelection)
    eventBus.on('handle:end',stopDrawRectangle)
});

onUnmounted(()=>{
    map.value.destroy()// 销毁地图实例以释放资源
    eventBus.off('handle:clear',clearSelection)
    eventBus.off('species:list',getSpeciesList)
    eventBus.off('handle:start',startRectangleSelection)
    eventBus.off('handle:end',stopDrawRectangle)
})
</script>

<style scoped>
#map-container {
    width: 100%;
    height: 100%;
}
</style>
