chore: init

src/lib/services/Overpass.ts

@@ -0,0 +1,65 @@
+import { OVERPASS_SERVER } from "./hosts";
+
+export type OverpassResult = {
+	elements: OverpassElement[];
+};
+
+export type OverpassElement = {
+	type: "node" | "way" | "relation";
+	id: number;
+	tags: Record<string, string>;
+	lat?: number; // Only for nodes
+	lon?: number; // Only for nodes
+	nodes?: number[]; // Only for ways
+	center?: {
+		lat: number; // Only for relations
+		lon: number; // Only for relations
+	};
+};
+
+/**
+[out:json];
+{{geocodeArea:<City>}}->.searchArea;
+// nwr(area.searchArea);
+(
+  node(area.searchArea)["amenity"]["name"];
+  way(area.searchArea)["amenity"]["name"];
+  relation(area.searchArea)["amenity"]["name"];
+  node(area.searchArea)["shop"]["name"];
+  way(area.searchArea)["shop"]["name"];
+  relation(area.searchArea)["shop"]["name"];
+  node(area.searchArea)["building"]["building"!="garage"];
+  way(area.searchArea)["building"]["building"!="garage"];
+  node(area.searchArea)["amenity"="parking"];
+  way(area.searchArea)["amenity"="parking"];
+);
+out geom;
+
+[out:json];
+{{geocodeArea:<City>}};
+out geom;
+ */
+
+export async function fetchPOI(
+	lat: number,
+	lon: number,
+	radius: number,
+) {
+	return await fetch(OVERPASS_SERVER, {
+		method: "POST",
+		body: `[out:json];
+(
+  node(around:${radius}, ${lat}, ${lon})["amenity"]["name"];
+  way(around:${radius}, ${lat}, ${lon})["amenity"]["name"];
+  relation(around:${radius}, ${lat}, ${lon})["amenity"]["name"];
+  node(around:${radius}, ${lat}, ${lon})["shop"]["name"];
+  way(around:${radius}, ${lat}, ${lon})["shop"]["name"];
+  relation(around:${radius}, ${lat}, ${lon})["shop"]["name"];
+  node(around:${radius}, ${lat}, ${lon})["building"]["building"!="garage"];
+  way(around:${radius}, ${lat}, ${lon})["building"]["building"!="garage"];
+  node(around:${radius}, ${lat}, ${lon})["amenity"="parking"];
+  way(around:${radius}, ${lat}, ${lon})["amenity"="parking"];
+);
+out center tags;`
+	}).then(res => res.json() as Promise<OverpassResult>);
+}