Restructuring

Logic/Osm/Overpass.ts

@@ -0,0 +1,54 @@
+/**
+ * Interfaces overpass to get all the latest data
+ */
+import {Bounds} from "../Bounds";
+import {TagsFilter} from "../TagsFilter";
+import $ from "jquery"
+import * as OsmToGeoJson from "osmtogeojson";
+
+export class Overpass {
+    private _filter: TagsFilter
+    public static testUrl: string = null
+
+    constructor(filter: TagsFilter) {
+        this._filter = filter
+    }
+
+    
+    private buildQuery(bbox: string): string {
+        const filters = this._filter.asOverpass()
+        let filter = ""
+        for (const filterOr of filters) {
+            filter += 'nwr' + filterOr + ';'
+        }
+        const query =
+            '[out:json][timeout:25]' + bbox + ';(' + filter + ');out body;>;out skel qt;'
+        return "https://overpass-api.de/api/interpreter?data=" + encodeURIComponent(query)
+    }
+    
+    queryGeoJson(bounds: Bounds, continuation: ((any) => void), onFail: ((reason) => void)): void {
+        
+        let query = this.buildQuery( "[bbox:" + bounds.south + "," + bounds.west + "," + bounds.north + "," + bounds.east + "]")
+
+        if(Overpass.testUrl !== null){
+            console.log("Using testing URL")
+            query = Overpass.testUrl;
+        }
+
+        $.getJSON(query,
+            function (json, status) {
+                if (status !== "success") {
+                    console.log("Query failed")
+                    onFail(status);
+                }
+
+                if(json.elements === [] && json.remarks.indexOf("runtime error") > 0){
+                    console.log("Timeout or other runtime error");
+                    return;
+                }
+                // @ts-ignore
+                const geojson = OsmToGeoJson.default(json);
+                continuation(geojson);
+            }).fail(onFail)
+    }
+}