// 初始化地图
    const map = L.map('map').setView([31.2304, 121.4737], 13); // 上海坐标
    L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
        maxZoom: 19,
        attribution: '© OpenStreetMap'
    }).addTo(map);
  
    let markers = [];
    let routeLine = null;
  
    // 点击地图添加起点/终点
    map.on('click', async (e) => {
        const { lat, lng } = e.latlng;
  
        if (markers.length >= 1) {
            // 重置
            markers.forEach(m => map.removeLayer(m));
            markers = [];
            if (routeLine) {
                map.removeLayer(routeLine);
                routeLine = null;
            }
        }
  
        const marker = L.marker([lat, lng]).addTo(map);
        markers.push(marker);
  	  
  	  
  	  const url = `https://nominatim.openstreetmap.org/reverse?format=jsonv2&lat=${lat}&lon=${lng}`;
  	    const res = await fetch(url);
  	    const data = await res.json();
  	    console.log(data);
  	  
        marker.bindPopup(`📍 当前位置：<br>纬度：${lat}<br>经度：${lng}<br>${data.display_name}`).openPopup();
  
        console.log("选择的坐标：", lat, lng);
  	  
        if (markers.length === 2) {
            const start = markers[0].getLatLng();
            const end = markers[1].getLatLng();
  
            // 请求 OSRM 路线 API
            const url = `https://router.project-osrm.org/route/v1/driving/${start.lng},${start.lat};${end.lng},${end.lat}?overview=full&geometries=geojson`;
  
            const response = await fetch(url);
            const json = await response.json();
  
            if (json.code === 'Ok') {
                const coords = json.routes[0].geometry.coordinates.map(c => [c[1], c[0]]);
                routeLine = L.polyline(coords, { color: 'blue', weight: 5 }).addTo(map);
                map.fitBounds(routeLine.getBounds());
  
                const distance = (json.routes[0].distance / 1000).toFixed(2);
                const duration = (json.routes[0].duration / 60).toFixed(1);
                alert(`路线规划完成：\n距离：${distance} 公里\n预计时间：${duration} 分钟`);
            } else {
                alert('路线规划失败');
            }
        }
    });
  
document.addEventListener('UniAppJSBridgeReady', function() {
	function initMap() {
		uni.postMessage({
			data: {
				mark:"initMap"
			}
		});
	}
	  
	window.initMap = initMap;
});