some more images

frontend/lib/utils/fetch_trip.dart

@@ -93,6 +93,11 @@ patchLandmarkImage(Landmark landmark) async {
     if (newUrl != null) {
       landmark.imageURL = newUrl;
     }
+  } else if (landmark.imageURL!.contains("photos.app.goo.gl")) {
+    // the image is a google photos link, we should get the image behind the link
+    String? newUrl = await getImageUrlFromGooglePhotos(landmark.imageURL!);
+    // also set the new url if it is null
+    landmark.imageURL = newUrl; 
   }
 }
 

frontend/lib/utils/load_landmark_image.dart

@@ -58,3 +58,14 @@ Future<String?> getImageUrlFromName(String title) async {
     }
     return await getImageUrl(pageId);
 }
+
+
+Future<String?> getImageUrlFromGooglePhotos(String url) async {
+    // this is a very simple implementation that just gets the image behind the link
+    // it is not guaranteed to work for all google photos links
+    final response = await dio.get(url);
+    final data = response.toString();
+    final int start = data.indexOf("https://lh3.googleusercontent.com");
+    final int end = data.indexOf('"', start);
+    return data.substring(start, end);
+}