Made it so only admins can change pet owners

android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/PetDetailFragment.java

@@ -4,6 +4,7 @@ import android.os.Bundle;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
@@ -163,6 +164,20 @@ public class PetDetailFragment extends Fragment {
         petDTO.setCustomerId(customerId);
         petDTO.setStoreId(storeId);
 
+        boolean ownerChanged = !java.util.Objects.equals(viewModel.getOriginalCustomerId(), customerId);
+        if (!isStaff() && viewModel.isEditing() && viewModel.isOriginallyOwnedOrAdopted() && ownerChanged) {
+            new AlertDialog.Builder(requireContext())
+                    .setTitle("Change Owner")
+                    .setMessage("Are you sure you want to change the owner of this pet?")
+                    .setPositiveButton("Yes", (d, w) -> performSave(petDTO, name))
+                    .setNegativeButton("Cancel", null)
+                    .show();
+        } else {
+            performSave(petDTO, name);
+        }
+    }
+
+    private void performSave(PetDTO petDTO, String name) {
         viewModel.savePet(petDTO).observe(getViewLifecycleOwner(), resource -> {
             if (resource == null) return;
             setLoading(resource.status == Resource.Status.LOADING);
@@ -344,6 +359,10 @@ public class PetDetailFragment extends Fragment {
             binding.spinnerStore.setEnabled(false);
         }
 
+        if (isStaff() && state.isEditing && viewModel.isOriginallyOwnedOrAdopted()) {
+            binding.spinnerCustomer.setEnabled(false);
+        }
+
         isUpdatingUI = false;
     }
 

android/app/src/main/java/com/example/petstoremobile/viewmodels/PetDetailViewModel.java

@@ -40,6 +40,8 @@ public class PetDetailViewModel extends ViewModel {
     private Long selectedCustomerId = null;
     private Long selectedStoreId = null;
     private String selectedSpecies = null;
+    private boolean isOriginallyOwnedOrAdopted = false;
+    private Long originalCustomerId = null;
 
     @Inject
     public PetDetailViewModel(PetRepository petRepository, CustomerRepository customerRepository, StoreRepository storeRepository) {
@@ -82,6 +84,14 @@ public class PetDetailViewModel extends ViewModel {
         return current != null && current.isEditing;
     }
 
+    public boolean isOriginallyOwnedOrAdopted() {
+        return isOriginallyOwnedOrAdopted;
+    }
+
+    public Long getOriginalCustomerId() {
+        return originalCustomerId;
+    }
+
     public LiveData<ViewState> getViewState() {
         return viewState;
     }
@@ -162,6 +172,9 @@ public class PetDetailViewModel extends ViewModel {
                 selectedCustomerId = pet.getCustomerId();
                 selectedStoreId = pet.getStoreId();
                 selectedSpecies = pet.getPetSpecies();
+                isOriginallyOwnedOrAdopted = STATUS_OWNED.equalsIgnoreCase(pet.getPetStatus())
+                        || STATUS_ADOPTED.equalsIgnoreCase(pet.getPetStatus());
+                originalCustomerId = pet.getCustomerId();
 
                 updateViewState(state -> {
                     state.selectedCustomerId = selectedCustomerId;