gaoYuJournal/miniprogram/pages/main/travel-location-map/index.ts

// pages/main/travel-location-map/index.ts

import { TravelLocationApi } from "../../../api/TravelLocationApi";
import { TravelLocation, TravelLocationTypeLabel } from "../../../types/Travel";
import Toolkit from "../../../utils/Toolkit";

interface MapMarker {
	id: number;
	latitude: number;
	longitude: number;
	width: number;
	height: number;
	customCallout: {
		anchorY: number;
		anchorX: number;
		display: string;
	};
	/** 该位置的所有地点 */
	locations: TravelLocation[];
}

interface TravelMapData {
	travelId: number;
	centerLat: number;
	centerLng: number;
	scale: number;
	markers: MapMarker[];
	locations: TravelLocation[];
	includePoints: Array<{ latitude: number; longitude: number }>;
	isLoading: boolean;
	detailVisible: boolean;
	detailIds: number[];
}

Page({
	data: <TravelMapData>{
		travelId: 0,
		centerLat: 39.908823,
		centerLng: 116.397470,
		scale: 13,
		markers: [],
		locations: [],
		includePoints: [],
		isLoading: true,
		detailVisible: false,
		detailIds: []
	},

	onLoad(options: any) {
		const travelId = options.travelId ? parseInt(options.travelId) : 0;
		if (travelId) {
			this.setData({ travelId });
			this.loadLocations(travelId);
		} else {
			wx.showToast({
				title: "参数错误",
				icon: "error"
			});
			setTimeout(() => {
				wx.navigateBack();
			}, 1500);
		}
	},

	/** 加载所有地点 */
	async loadLocations(travelId: number) {
		this.setData({ isLoading: true });

		try {
			const result = await TravelLocationApi.getList({
				index: 0,
				size: 100,
				equalsExample: {
					travelId
				}
			});

			// 过滤有位置信息的地点
			const locations = result.list.filter(loc => loc.lat && loc.lng);

			if (locations.length === 0) {
				wx.showToast({
					title: "暂无位置记录",
					icon: "none"
				});
				this.setData({ isLoading: false });
				return;
			}

			// 为每个地点添加类型标签
			locations.forEach(location => {
				(location as any).typeLabel = location.type ? TravelLocationTypeLabel[location.type] : "";
			});

			// 按位置分组，处理重叠地点
			const locationMap = new Map<string, TravelLocation[]>();
			locations.forEach(location => {
				const key = `${location.lat},${location.lng}`;
				if (!locationMap.has(key)) {
					locationMap.set(key, []);
				}
				locationMap.get(key)!.push(location);
			});

			// 生成地图标记（每个唯一位置一个标记）
			const markers: MapMarker[] = Array.from(locationMap.values()).map((locs, index) => ({
				id: index,
				latitude: locs[0].lat!,
				longitude: locs[0].lng!,
				width: 24,
				height: 30,
				customCallout: {
					anchorY: -2,
					// 随机错位避免近距离重叠
					anchorX: Toolkit.random(-10, 10),
					display: "ALWAYS"
				},
				locations: locs
			}));

			// 计算中心点（所有标记的平均位置）
			const centerLat = locations.reduce((sum, l) => sum + l.lat!, 0) / locations.length;
			const centerLng = locations.reduce((sum, l) => sum + l.lng!, 0) / locations.length;

			// 缩放视野以包含所有标记点
			const includePoints = locations.map((l) => ({
				latitude: l.lat!,
				longitude: l.lng!
			}));

			this.setData({
				locations,
				markers,
				centerLat,
				centerLng,
				includePoints,
				isLoading: false
			});
		} catch (err: any) {
			wx.showToast({
				title: "加载失败",
				icon: "error"
			});
			this.setData({ isLoading: false });
		}
	},

	/** 标记点击事件 */
	onMarkerTap(e: any) {
		const markerId = e.detail.markerId || e.markerId;
		this.loadLocationDetail(markerId);
	},

	/** 气泡点击事件 */
	onCalloutTap(e: any) {
		const markerId = e.detail.markerId || e.markerId;
		this.loadLocationDetail(markerId);
	},

	/** 加载位置详情 */
	loadLocationDetail(markerId: number) {
		const marker = this.data.markers[markerId];
		if (!marker || !marker.locations || marker.locations.length === 0) {
			return;
		}
		// 获取该标记点的所有地点 ID
		const locationIds = marker.locations.map(loc => loc.id!).filter(id => id);
		if (locationIds.length === 0) {
			return;
		}
		this.setData({
			detailVisible: true,
			detailIds: locationIds
		});
	},

	/** 关闭详情 */
	closeDetail() {
		this.setData({
			detailVisible: false
		});
	}
});