// 使用OpenStreetMap和Leaflet替代百度地图
export function loadBMap() {
    return new Promise(function(resolve, reject) {
        // eslint-disable-next-line no-undef
        if (typeof L !== 'undefined') {
            // eslint-disable-next-line no-undef
            resolve(L);
            return true;
        }
        
        // 加载Leaflet CSS
        if (!document.querySelector('link[href*="leaflet.css"]')) {
            const link = document.createElement('link');
            link.rel = 'stylesheet';
            link.href = 'https://unpkg.com/leaflet@1.9.4/dist/leaflet.css';
            link.integrity = 'sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY=';
            link.crossOrigin = '';
            document.head.appendChild(link);
        }
        
        // 加载Leaflet JS
        const script = document.createElement('script');
        script.type = 'text/javascript';
        script.src = 'https://unpkg.com/leaflet@1.9.4/dist/leaflet.js';
        script.integrity = 'sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo=';
        script.crossOrigin = '';
        script.onload = function() {
            // eslint-disable-next-line no-undef
            resolve(L);
        };
        script.onerror = reject;
        document.head.appendChild(script);
    });
}