fix: Check if is under restricted

flake.nix

@@ -31,6 +31,7 @@
             newman
             gron
             fx
+            google-java-format
           ];
           shellHook = ''
             export JAVA_HOME=${pkgs.jdk21}

src/main/java/io/github/js0ny/ilp_coursework/service/PathFinderService.java

@@ -118,6 +118,15 @@ public class PathFinderService {
             return new DeliveryPathResponse(0f, 0, new DronePath[0]);
         }
 
+        for (var r : records) {
+            if (isRestricted(r.delivery())) {
+                throw new IllegalStateException(
+                        "Delivery "
+                                + r.id()
+                                + " is located within a restricted area and cannot be fulfilled");
+            }
+        }
+
         Map<String, List<MedDispatchRecRequest>> assigned = assignDeliveries(records);
 
         List<DronePath> paths = new ArrayList<>();