dev (#160)

Co-authored-by: sora-ext
Co-authored-by: soraefir
Reviewed-on: #160

src/server/api_nominatim.ts

@@ -0,0 +1,27 @@
+
+function drop_fields(results) {
+    results.forEach(e => {
+        delete e.licence;
+        delete e.place_rank;
+        delete e.importance;
+        delete e.boundingbox;
+    });
+    return results
+}
+
+export function nominatim_get_data(id: string, bb: string[][] | null = null): Promise<any> {
+    if (!id) return Promise.resolve([])
+
+    const url = new URL("https://nominatim.openstreetmap.org/search");
+    url.searchParams.append('format', 'jsonv2')
+    url.searchParams.append('q', id)
+    url.searchParams.append('limit', '20')
+    if (bb) {
+        url.searchParams.append('viewbox', `${bb[0][0]},${bb[0][1]},${bb[1][0]},${bb[1][1]}`)
+        url.searchParams.append('bounded', `1`)
+    }
+    return fetch(url).then((res) => {
+        if (!res.ok) throw new Error("Nominatim Error")
+        return res.json().then(r => drop_fields(r))
+    })
+}