First search with suggestions

src/Logic/Geocoding/NominatimGeocoding.ts

@@ -0,0 +1,39 @@
+import { Utils } from "../../Utils"
+import { BBox } from "../BBox"
+import Constants from "../../Models/Constants"
+import { FeatureCollection } from "geojson"
+import Locale from "../../UI/i18n/Locale"
+import GeocodingProvider, { GeoCodeResult, ReverseGeocodingProvider } from "./GeocodingProvider"
+
+export class NominatimGeocoding implements GeocodingProvider, ReverseGeocodingProvider {
+
+    private readonly _host ;
+
+    constructor(host: string =  Constants.nominatimEndpoint) {
+        this._host = host
+    }
+
+    public async search(query: string, options?: { bbox?: BBox; limit?: number }): Promise<GeoCodeResult[]> {
+        const b = options?.bbox ?? BBox.global
+        const url = `${
+            this._host
+        }search?format=json&limit=${options?.limit ?? 1}&viewbox=${b.getEast()},${b.getNorth()},${b.getWest()},${b.getSouth()}&accept-language=${
+            Locale.language.data
+        }&q=${query}`
+        return await Utils.downloadJson(url)
+    }
+
+
+    async reverseSearch(
+        coordinate: { lon: number; lat: number },
+        zoom: number = 17,
+        language?: string
+    ): Promise<FeatureCollection> {
+        // https://nominatim.org/release-docs/develop/api/Reverse/
+        // IF the zoom is low, it'll only return a country instead of an address
+        const url = `${this._host}reverse?format=geojson&lat=${coordinate.lat}&lon=${
+            coordinate.lon
+        }&zoom=${Math.ceil(zoom) + 1}&accept-language=${language}`
+        return Utils.downloadJson(url)
+    }
+}