// 查询 OSM 周边所有 POI（不限制类型）
export  function getOSMAround(lat, lon, radius = 500) {
  // Overpass Query
  const query = `
    [out:json];
    (
      node(around:${radius},${lat},${lon})["amenity"];
	  node(around:${radius},${lat},${lon})["shop"];
	  node(around:${radius},${lat},${lon})["tourism"];
	  node(around:${radius},${lat},${lon})["leisure"];
	  node(around:${radius},${lat},${lon})["public_transport"];
    );
    out center;
  `;

  return new Promise((resolve, reject) => {
    uni.request({
      url: "https://overpass-api.de/api/interpreter",
      method: "POST",
      header: {
        "Content-Type": "application/x-www-form-urlencoded"
      },
      data: query,
      success: (res) => {
        if (res.data && res.data.elements) {
          resolve(res.data.elements); // 返回 OSM 对象列表
        } else {
          resolve([]);
        }
      },
      fail: (err) => {
        reject(err);
      }
    });
  });
};

export function geoByName(keyword) {
  return new Promise((resolve, reject) => {
    uni.request({
      url: "https://nominatim.openstreetmap.org/search",
      method: "GET",
      data: {
        q: keyword,       // 地名
        format: "jsonv2", // 返回 JSON 格式
        addressdetails: 1 // 返回详细地址
      },
      header: {
        "User-Agent": "uni-app - OSM Demo"
      },
      success: (res) => {
        if (res.data && res.data.length > 0) {
          resolve(res.data[0]); // 返回最匹配项
        } else {
          resolve(null);
        }
      },
      fail: (err) => reject(err)
    });
  });
};