refactor: initialize config via APP_INITIALIZER

Closes #181

src/app/modules/map/map.provider.ts

@@ -26,6 +26,7 @@ import {divIcon, geoJSON, icon, LatLng, Map, marker, Marker} from 'leaflet';
 import {DataProvider} from '../data/data.provider';
 import {MapPosition, PositionService} from './position.service';
 import {hasValidLocation} from '../data/types/place/place-types';
+import {ConfigProvider} from '../config/config.provider';
 
 /**
  * Provides methods for presenting the map
@@ -107,7 +108,12 @@ export class MapProvider {
   constructor(
     private dataProvider: DataProvider,
     private positionService: PositionService,
-  ) {}
+    private configProvider: ConfigProvider,
+  ) {
+    this.defaultPolygon = this.configProvider.getValue(
+      'campusPolygon',
+    ) as Polygon;
+  }
 
   /**
    * Provide the specific place by its UID
@@ -128,7 +134,7 @@ export class MapProvider {
 
   /**
    * Provide places (buildings and canteens)    const result = await this.dataProvider.search(query);
-   
+
    *
    * @param contextFilter Additional contextual filter (e.g. from the context menu)
    * @param queryText Query (text) of the search query