141 lines
3.4 KiB
TypeScript
141 lines
3.4 KiB
TypeScript
import { toast } from './toast'
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let tdtLoaded = false
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let tdtLoadCallbacks: ((T: typeof window.T) => void)[] = []
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const mapKey = import.meta.env.VITE_TIANDITU_MAP_KEY
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export function loadTianDiTu(onLoadedCallback?: (T: typeof window.T) => void) {
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if (tdtLoaded && window.T) {
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onLoadedCallback?.(window.T)
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return
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}
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if (onLoadedCallback)
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tdtLoadCallbacks.push(onLoadedCallback)
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if (document.querySelector(`script[src*="tianditu.gov.cn/api"]`))
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return
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const script = document.createElement('script')
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script.src = `https://api.tianditu.gov.cn/api?v=4.0&tk=${mapKey}`
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script.onload = () => {
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if (!window.T) {
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console.error('天地图脚本加载成功，但 T 不存在')
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return
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}
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tdtLoaded = true
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tdtLoadCallbacks.forEach(cb => cb(window.T!))
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tdtLoadCallbacks = []
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}
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script.onerror = () => {
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console.error('天地图脚本加载失败')
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tdtLoadCallbacks = []
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}
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document.head.appendChild(script)
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}
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export async function getAddressByPoint(lon: number, lat: number): Promise<string> {
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return new Promise((resolve, reject) => {
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loadTianDiTu((T) => {
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try {
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const geocoder = new T.Geocoder()
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geocoder.getLocation(new T.LngLat(lon, lat), (res: any) => {
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try {
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const addr = res.formatted_address
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const comp = res.addressComponent || {}
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if (!addr) {
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const parts = [
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comp.nation,
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comp.province,
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comp.city,
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comp.county,
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comp.road,
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comp.poi || comp.address,
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].filter(Boolean)
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resolve(parts.join(' '))
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}
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else {
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resolve(addr)
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}
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}
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catch (err) {
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reject(err)
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}
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})
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}
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catch (err) {
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reject(err)
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}
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})
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})
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}
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export async function getPoint(): Promise<{ lon: number, lat: number } | null> {
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return new Promise((resolve, reject) => {
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uni.getLocation({
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type: 'wgs84',
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success(res) {
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console.log(res)
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const lon = res.longitude
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const lat = res.latitude
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if (!lon || !lat || (lon === 0 && lat === 0)) {
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resolve(null) // 无效坐标返回 null
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}
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else {
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resolve({ lon, lat })
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}
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},
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fail(err) {
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console.error('获取定位失败', err)
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resolve(null) // 定位失败也返回 null，调用方可以判断
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},
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})
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})
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}
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export interface CurrentLocation {
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lon: number
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lat: number
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address: string
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}
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/**
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* 获取当前位置及对应地址（自动处理错误和提示）
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* @returns 如果成功返回位置信息，否则返回 null（已自动 toast 提示）
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*/
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export function getCurrentLocation(): Promise<CurrentLocation | null> {
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return getPoint()
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.then((point) => {
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if (!point) {
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return null
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}
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return getAddressByPoint(point.lon, point.lat).then(address => ({
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lon: point.lon,
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lat: point.lat,
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address,
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}))
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})
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.catch((err) => {
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console.error('[getCurrentLocation] 获取位置失败:', err)
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return null
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})
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.finally(() => {
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console.log('[getCurrentLocation] 操作完成')
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})
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}
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export async function getDrive(points: number[][], style: string = '0') {
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loadTianDiTu((T) => {
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const drivingRoute = new T.DrivingRoute(null)
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})
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}
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