resolve city names

app/providers/geo/GeoApiClient.test.ts

@@ -40,4 +40,12 @@ describe('GeoAPIClient', () => {
       lon: 10.000654,
     })
   })
+
+  it('fetches city name of place id', async () => {
+    using _ = fakeFetch(aPlaceDetailsReponse)
+
+    const response = await client.resolveCityName('somePlaceId')
+
+    assertEquals(response, 'Hamburg')
+  })
 })

app/providers/geo/GeoApiClient.ts

@@ -5,7 +5,8 @@ export interface ResolvesCoordinates {
 }
 
 export class GeoApiClient implements ResolvesCoordinates {
-  constructor(private readonly endpointUrl: string) {}
+  constructor(private readonly endpointUrl: string) {
+  }
 
   async resolveCoordinates(
     geolocationId: string,
@@ -16,7 +17,21 @@ export class GeoApiClient implements ResolvesCoordinates {
       return { lat, lon }
     } else {
       throw new Deno.errors.NotCapable(
-        `Resolution of lat/lon failed (no data included in response for geolocationId=${geolocationId})`,
+        `Resolution of lat/lon failed (no data in response for geolocationId=${geolocationId})`,
+      )
+    }
+  }
+
+  async resolveCityName(
+    geolocationId: string,
+  ): Promise<string> {
+    const response = await this.fetchPlaceDetails(geolocationId)
+    const { city } = response.data?.placeDetails?.geolocation?.properties || {}
+    if (city) {
+      return city
+    } else {
+      throw new Deno.errors.NotCapable(
+        `Resolution of city name failed (no data in response for geolocationId=${geolocationId})`,
       )
     }
   }

app/providers/geo/GeoApiClient.types.ts

@@ -10,6 +10,7 @@ export type GeolocationCoordinates = {
 
 export type GeolocationProperties = {
   formatted: string
+  city: string
 } & GeolocationCoordinates
 
 export type GeoAPIResponse = {