Merge branch 'AttachmentsToChat'

android/app/src/main/java/com/example/petstoremobile/adapters/PetAdapter.java

@@ -103,11 +103,21 @@ public class PetAdapter extends RecyclerView.Adapter<PetAdapter.PetViewHolder> i
         
         binding.tvPetStatus.setText(pet.getPetStatus());
 
-        //Set the status color depending on availability. If available, green, otherwise red
+        //Set the status color depending on availability. If available, green, If Pending, yellow, otherwise red
-        if (pet.getPetStatus() != null && pet.getPetStatus().equals("Available")) {
+        if (pet.getPetStatus() != null) {
-            binding.tvPetStatus.setBackgroundColor(Color.parseColor("#4CAF50"));
+            switch (pet.getPetStatus()) {
+                case "Available":
+                    binding.tvPetStatus.setBackgroundColor(Color.parseColor("#4CAF50"));
+                    break;
+                case "Pending":
+                    binding.tvPetStatus.setBackgroundColor(Color.parseColor("#FF9800"));
+                    break;
+                default:
+                    binding.tvPetStatus.setBackgroundColor(Color.parseColor("#F44336"));
+                    break;
+            }
         } else {
-            binding.tvPetStatus.setBackgroundColor(Color.parseColor("#F44336"));
+            binding.tvPetStatus.setBackgroundColor(Color.parseColor("#9E9E9E"));
         }
 
         // Load pet image using Glide

android/app/src/main/java/com/example/petstoremobile/api/PetApi.java

@@ -50,6 +50,9 @@ public interface PetApi {
     @GET("api/v1/dropdowns/pet-species")
     Call<List<DropdownDTO>> getPetSpeciesDropdowns();
 
+    @GET("api/v1/dropdowns/pet-breeds")
+    Call<List<DropdownDTO>> getPetBreedsDropdowns(@Query("species") String species);
+
     // Get pet by id
     @GET("api/v1/pets/{id}")
     Call<PetDTO> getPetById(@Path("id") Long id);

android/app/src/main/java/com/example/petstoremobile/dtos/CustomerDTO.java

@@ -17,6 +17,7 @@ public class CustomerDTO {
     private String createdAt;
     private String updatedAt;
     private String password;
+    private String role;
 
     public CustomerDTO() {}
 
@@ -73,4 +74,7 @@ public class CustomerDTO {
 
     public String getPassword() { return password; }
     public void setPassword(String password) { this.password = password; }
+
+    public String getRole() { return role; }
+    public void setRole(String role) { this.role = role; }
 }

android/app/src/main/java/com/example/petstoremobile/dtos/SaleDTO.java

@@ -17,6 +17,9 @@ public class SaleDTO {
     private BigDecimal subtotalAmount;
     private BigDecimal couponDiscountAmount;
     private BigDecimal employeeDiscountAmount;
+    private BigDecimal loyaltyDiscountAmount;
+    private BigDecimal pointsDiscountAmount;
+    private Integer pointsUsed;
     private String paymentMethod;
     private String channel;
     private Boolean isRefund;
@@ -78,6 +81,22 @@ public class SaleDTO {
         return employeeDiscountAmount;
     }
 
+    public BigDecimal getLoyaltyDiscountAmount() {
+        return loyaltyDiscountAmount;
+    }
+
+    public void setLoyaltyDiscountAmount(BigDecimal loyaltyDiscountAmount) {
+        this.loyaltyDiscountAmount = loyaltyDiscountAmount;
+    }
+
+    public Integer getPointsUsed() {
+        return pointsUsed;
+    }
+
+    public void setPointsUsed(Integer pointsUsed) {
+        this.pointsUsed = pointsUsed;
+    }
+
     public String getPaymentMethod() {
         return paymentMethod;
     }
@@ -126,6 +145,14 @@ public class SaleDTO {
         return customerName;
     }
 
+    public BigDecimal getPointsDiscountAmount() {
+        return pointsDiscountAmount;
+    }
+
+    public void setPointsDiscountAmount(BigDecimal pointsDiscountAmount) {
+        this.pointsDiscountAmount = pointsDiscountAmount;
+    }
+
     // Nested SaleItemDTO
     public static class SaleItemDTO {
         private Long saleItemId;

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

@@ -136,7 +136,7 @@ public class PetFragment extends Fragment implements PetAdapter.OnPetClickListen
     }
 
     private void setupStatusFilter() {
-        String[] statuses = {"All Statuses", "Available", "Adopted", "Owned"};
+        String[] statuses = {"All Statuses", "Available", "Adopted", "Owned", "Pending"};
         SpinnerUtils.setupStringFilterSpinner(requireContext(), binding.spinnerStatus, statuses, this::loadPetData);
     }
 

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

@@ -65,6 +65,11 @@ public class SaleFragment extends Fragment implements SaleAdapter.OnSaleClickLis
 
         UIUtils.setupHamburgerMenu(binding.btnHamburger, this);
 
+        if (isAdmin()) {
+            binding.fabAddSale.setVisibility(View.GONE);
+            binding.btnOpenRefund.setVisibility(View.GONE);
+        }
+
         binding.fabAddSale.setOnClickListener(v ->
                 NavHostFragment.findNavController(this).navigate(R.id.nav_sale_detail));
 
@@ -110,6 +115,10 @@ public class SaleFragment extends Fragment implements SaleAdapter.OnSaleClickLis
         return "STAFF".equalsIgnoreCase(tokenManager.getRole());
     }
 
+    private boolean isAdmin() {
+        return "ADMIN".equalsIgnoreCase(tokenManager.getRole());
+    }
+
     private void setupStoreFilter() {
         SpinnerUtils.setupFilterSpinner(binding.spinnerStore, () -> loadSales(true));
     }

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

@@ -14,8 +14,11 @@ import com.example.petstoremobile.utils.InputValidator;
 import com.example.petstoremobile.utils.SpinnerUtils;
 import com.example.petstoremobile.utils.UIUtils;
 import com.example.petstoremobile.viewmodels.CustomerDetailViewModel;
+import com.example.petstoremobile.api.auth.TokenManager;
 import com.example.petstoremobile.utils.Resource;
 
+import javax.inject.Inject;
+
 import dagger.hilt.android.AndroidEntryPoint;
 
 @AndroidEntryPoint
@@ -24,6 +27,8 @@ public class CustomerDetailFragment extends Fragment {
     private FragmentCustomerDetailBinding binding;
     private CustomerDetailViewModel viewModel;
 
+    @Inject TokenManager tokenManager;
+
     private final String[] STATUSES = {"Active", "Inactive"};
 
     @Override
@@ -65,7 +70,10 @@ public class CustomerDetailFragment extends Fragment {
 
             // Show loyalty points
             binding.tvLoyaltyPointsLabel.setVisibility(View.VISIBLE);
-            binding.tvCustomerLoyaltyPoints.setVisibility(View.VISIBLE);
+            binding.etCustomerLoyaltyPoints.setVisibility(View.VISIBLE);
+
+            boolean isAdmin = "ADMIN".equalsIgnoreCase(tokenManager.getRole());
+            binding.etCustomerLoyaltyPoints.setEnabled(isAdmin);
 
             loadCustomerData(customerId);
         } else {
@@ -74,7 +82,7 @@ public class CustomerDetailFragment extends Fragment {
             binding.btnDeleteCustomer.setVisibility(View.GONE);
             binding.tvCustomerId.setVisibility(View.GONE);
             binding.tvLoyaltyPointsLabel.setVisibility(View.GONE);
-            binding.tvCustomerLoyaltyPoints.setVisibility(View.GONE);
+            binding.etCustomerLoyaltyPoints.setVisibility(View.GONE);
         }
     }
 
@@ -91,7 +99,7 @@ public class CustomerDetailFragment extends Fragment {
                     binding.etCustomerPhone.setText(c.getPhone() != null ? c.getPhone() : "");
                     binding.spinnerCustomerStatus.setSelection(Boolean.TRUE.equals(c.getActive()) ? 0 : 1);
                     int pts = c.getLoyaltyPoints() != null ? c.getLoyaltyPoints() : 0;
-                    binding.tvCustomerLoyaltyPoints.setText(String.valueOf(pts));
+                    binding.etCustomerLoyaltyPoints.setText(String.valueOf(pts));
                 }
             }
         });
@@ -121,6 +129,12 @@ public class CustomerDetailFragment extends Fragment {
         if (!InputValidator.isValidEmail(binding.etCustomerEmail)) return;
         if (!InputValidator.isValidPhone(binding.etCustomerPhone)) return;
 
+        Integer loyaltyPoints = null;
+        if (viewModel.isEditing()) {
+            if (!InputValidator.isPositiveInteger(binding.etCustomerLoyaltyPoints, "Loyalty Points")) return;
+            loyaltyPoints = Integer.parseInt(binding.etCustomerLoyaltyPoints.getText().toString().trim());
+        }
+
         String username  = binding.etCustomerUsername.getText().toString().trim();
         String password  = viewModel.isEditing() ? null : binding.etCustomerPassword.getText().toString().trim();
         String firstName = binding.etCustomerFirstName.getText().toString().trim();
@@ -129,9 +143,7 @@ public class CustomerDetailFragment extends Fragment {
         String phone     = binding.etCustomerPhone.getText().toString().trim();
         boolean active   = binding.spinnerCustomerStatus.getSelectedItemPosition() == 0;
 
-        CustomerDTO dto = new CustomerDTO(username, password, firstName, lastName, email, phone);
+        CustomerDTO dto = viewModel.createCustomerDto(username, password, firstName, lastName, email, phone, active, loyaltyPoints);
-        dto.setFullName(firstName + " " + lastName);
-        dto.setActive(active);
 
         viewModel.saveCustomer(dto).observe(getViewLifecycleOwner(), resource -> {
             if (resource != null) {

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

@@ -101,6 +101,14 @@ public class PetDetailFragment extends Fragment {
                     DropdownDTO::getLabel, "-- Select Species --", null, DropdownDTO::getId);
             SpinnerUtils.setSelectionByValue(binding.spinnerPetSpecies, selectedSpecies);
         });
+
+        viewModel.getBreedList().observe(getViewLifecycleOwner(), list -> {
+            PetDetailViewModel.ViewState state = viewModel.getViewState().getValue();
+            String selectedBreed = state != null ? state.selectedBreed : null;
+            SpinnerUtils.populateSpinner(requireContext(), binding.spinnerPetBreed, list,
+                    DropdownDTO::getLabel, "-- Select Breed --", null, DropdownDTO::getId);
+            SpinnerUtils.setSelectionByValue(binding.spinnerPetBreed, selectedBreed);
+        });
     }
 
     private void setLoading(boolean loading) {
@@ -118,7 +126,7 @@ public class PetDetailFragment extends Fragment {
     private void savePet() {
         if (!InputValidator.isNotEmpty(binding.etPetName, "Pet Name")) return;
         if (!InputValidator.isSpinnerSelected(binding.spinnerPetSpecies, "Species")) return;
-        if (!InputValidator.isNotEmpty(binding.etPetBreed, "Breed")) return;
+        if (!InputValidator.isSpinnerSelected(binding.spinnerPetBreed, "Breed")) return;
         if (!InputValidator.isPositiveInteger(binding.etPetAge, "Age")) return;
         if (!InputValidator.isPositiveDecimal(binding.etPetPrice, "Price")) return;
 
@@ -127,7 +135,11 @@ public class PetDetailFragment extends Fragment {
         String species = (speciesOptions != null && binding.spinnerPetSpecies.getSelectedItemPosition() > 0)
                 ? speciesOptions.get(binding.spinnerPetSpecies.getSelectedItemPosition() - 1).getLabel()
                 : "";
-        String breed = binding.etPetBreed.getText().toString().trim();
+
+        List<DropdownDTO> breedOptions = viewModel.getBreedList().getValue();
+        String breed = (breedOptions != null && binding.spinnerPetBreed.getSelectedItemPosition() > 0)
+                ? breedOptions.get(binding.spinnerPetBreed.getSelectedItemPosition() - 1).getLabel()
+                : "";
         int age = Integer.parseInt(binding.etPetAge.getText().toString().trim());
         double price = Double.parseDouble(binding.etPetPrice.getText().toString().trim());
         String status = binding.spinnerPetStatus.getSelectedItem().toString();
@@ -152,6 +164,10 @@ public class PetDetailFragment extends Fragment {
             if (!InputValidator.isSpinnerSelected(binding.spinnerCustomer, "Owner")) return;
             if (!InputValidator.isSpinnerSelected(binding.spinnerStore, "Store")) return;
         }
+        if ("Pending".equalsIgnoreCase(status)) {
+            if (!InputValidator.isSpinnerSelected(binding.spinnerCustomer, "Owner")) return;
+            if (!InputValidator.isSpinnerSelected(binding.spinnerStore, "Store")) return;
+        }
 
         PetDTO petDTO = new PetDTO();
         petDTO.setPetName(name);
@@ -236,7 +252,6 @@ public class PetDetailFragment extends Fragment {
             if (resource.status == Resource.Status.SUCCESS && resource.data != null) {
                 PetDTO p = resource.data;
                 binding.etPetName.setText(p.getPetName());
-                binding.etPetBreed.setText(p.getPetBreed());
                 binding.etPetAge.setText(String.valueOf(p.getPetAge()));
                 if (p.getPetPrice() != null) {
                     binding.etPetPrice.setText(String.format(Locale.getDefault(), "%.2f", p.getPetPrice()));
@@ -279,6 +294,11 @@ public class PetDetailFragment extends Fragment {
             viewModel.onSpeciesSelected(p);
         });
 
+        SpinnerUtils.setOnIndexSelectedListener(binding.spinnerPetBreed, p -> {
+            if (isUpdatingUI) return;
+            viewModel.onBreedSelected(p);
+        });
+
         SpinnerUtils.setOnIndexSelectedListener(binding.spinnerCustomer, p -> {
             if (isUpdatingUI) return;
             viewModel.onCustomerSelected(p);
@@ -306,7 +326,7 @@ public class PetDetailFragment extends Fragment {
         binding.btnSavePet.setText(state.saveButtonText);
 
         UIUtils.setViewsEnabled(state.isSpeciesEnabled, binding.spinnerPetSpecies);
-        UIUtils.setViewsEnabled(state.isBreedEnabled, binding.etPetBreed);
+        UIUtils.setViewsEnabled(state.isBreedEnabled, binding.spinnerPetBreed);
         UIUtils.setViewsEnabled(state.isCustomerEnabled, binding.spinnerCustomer);
         UIUtils.setViewsEnabled(state.isStoreEnabled, binding.spinnerStore);
 
@@ -323,6 +343,13 @@ public class PetDetailFragment extends Fragment {
             SpinnerUtils.setSelectionByValue(binding.spinnerPetSpecies, state.selectedSpecies);
         }
 
+        List<DropdownDTO> breeds = viewModel.getBreedList().getValue();
+        if (breeds != null) {
+            SpinnerUtils.populateSpinner(requireContext(), binding.spinnerPetBreed, breeds,
+                    DropdownDTO::getLabel, "-- Select Breed --", null, DropdownDTO::getId);
+            SpinnerUtils.setSelectionByValue(binding.spinnerPetBreed, state.selectedBreed);
+        }
+
         if (!state.isCustomerEnabled && binding.spinnerCustomer.getSelectedItemPosition() != 0) {
             binding.spinnerCustomer.setSelection(0);
         }

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

@@ -302,11 +302,7 @@ public class RefundFragment extends Fragment {
     }
 
     private void updateRefundTotal() {
-        BigDecimal total = BigDecimal.ZERO;
+        BigDecimal total = viewModel.calculateRefundTotal();
-        List<RefundViewModel.RefundItem> cart = viewModel.getRefundCart().getValue();
-        if (cart != null) {
-            for (RefundViewModel.RefundItem item : cart) total = total.add(item.getTotal());
-        }
         binding.tvRefundTotal.setText("Refund Total: $" + total.setScale(2, RoundingMode.HALF_UP));
     }
 
@@ -321,9 +317,7 @@ public class RefundFragment extends Fragment {
         }
 
         String payment = PAYMENT_METHODS[binding.spinnerRefundPayment.getSelectedItemPosition()];
-        BigDecimal total = BigDecimal.ZERO;
+        final BigDecimal finalTotal = viewModel.calculateRefundTotal();
-        for (RefundViewModel.RefundItem item : viewModel.getRefundCart().getValue()) total = total.add(item.getTotal());
-        final BigDecimal finalTotal = total;
 
         DialogUtils.showConfirmDialog(requireContext(), "Confirm Refund", 
                 "Process refund for Sale #" + viewModel.getCurrentSale().getSaleId()

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

@@ -14,6 +14,7 @@ import com.example.petstoremobile.dtos.*;
 import com.example.petstoremobile.viewmodels.SaleDetailViewModel;
 import com.example.petstoremobile.utils.SpinnerUtils;
 import com.example.petstoremobile.utils.DialogUtils;
+import com.example.petstoremobile.utils.DateTimeUtils;
 import com.example.petstoremobile.utils.InputValidator;
 import com.example.petstoremobile.utils.Resource;
 import com.example.petstoremobile.utils.UIUtils;
@@ -68,6 +69,10 @@ public class SaleDetailFragment extends Fragment {
         return "STAFF".equalsIgnoreCase(tokenManager.getRole());
     }
 
+    private boolean isAdmin() {
+        return "ADMIN".equalsIgnoreCase(tokenManager.getRole());
+    }
+
     private void observeViewModel() {
         viewModel.getStoreList().observe(getViewLifecycleOwner(), list -> {
             Long primaryStoreId = tokenManager.getPrimaryStoreId();
@@ -77,7 +82,7 @@ public class SaleDetailFragment extends Fragment {
             if (isStaff()) {
                 UIUtils.setViewsEnabled(false, binding.spinnerSaleStore);
                 if (primaryStoreId == null) {
-                    Toast.makeText(requireContext(), "No store assigned to your account. Contact an admin.", Toast.LENGTH_LONG).show();
+                    UIUtils.showToast(requireContext(), "No store assigned to your account. Contact an admin.");
                 }
             }
         });
@@ -96,6 +101,17 @@ public class SaleDetailFragment extends Fragment {
             renderCartItems();
             updateTotal();
         });
+
+        viewModel.getSelectedCustomerData().observe(getViewLifecycleOwner(), customer -> {
+            if (customer != null && !viewModel.isViewOnly()) {
+                binding.llLoyaltyPoints.setVisibility(View.VISIBLE);
+                binding.tvAvailablePoints.setText("(Available: " + customer.getLoyaltyPoints() + ")");
+                binding.cbUseLoyaltyPoints.setEnabled(customer.getLoyaltyPoints() >= 20);
+            } else {
+                binding.llLoyaltyPoints.setVisibility(View.GONE);
+                binding.cbUseLoyaltyPoints.setChecked(false);
+            }
+        });
     }
 
     private void handleArguments() {
@@ -105,11 +121,11 @@ public class SaleDetailFragment extends Fragment {
             boolean viewOnly = a.getBoolean("viewOnly", false);
             viewModel.setSaleId(saleId, viewOnly);
             
-            binding.tvSaleMode.setText("Sale #" + saleId);
+            binding.tvSaleMode.setText("Sale #" + DateTimeUtils.formatId(saleId));
-            binding.tvSaleDetailId.setText("ID: " + saleId);
+            binding.tvSaleDetailId.setText("ID: " + DateTimeUtils.formatId(saleId));
 
             boolean isRefund = a.getBoolean("isRefund", false);
-            if (isRefund) {
+            if (isRefund || isAdmin()) {
                 binding.btnRefundSale.setVisibility(View.GONE);
             }
 
@@ -128,9 +144,8 @@ public class SaleDetailFragment extends Fragment {
                 binding.spinnerPaymentMethod.setVisibility(View.GONE);
                 binding.tvSaleStore.setVisibility(View.VISIBLE);
                 binding.tvSalePaymentMethod.setVisibility(View.VISIBLE);
-                
+
-                // Show refund button only if it's not already a refund
+                binding.btnRefundSale.setVisibility((isRefund || isAdmin()) ? View.GONE : View.VISIBLE);
-                binding.btnRefundSale.setVisibility(isRefund ? View.GONE : View.VISIBLE);
             }
 
             loadSaleDetails();
@@ -173,23 +188,36 @@ public class SaleDetailFragment extends Fragment {
             setLoading(resource.status == Resource.Status.LOADING);
             if (resource.status == Resource.Status.SUCCESS && resource.data != null) {
                 SaleDTO sale = resource.data;
-                binding.tvSaleDetailTotal.setText("Total: $" + sale.getTotalAmount());
+                binding.tvSaleDetailTotal.setText("Total: $" + String.format(Locale.getDefault(), "%.2f", sale.getTotalAmount()));
-                binding.tvSaleSubtotal.setText("$" + (sale.getSubtotalAmount() != null ? sale.getSubtotalAmount() : sale.getTotalAmount()));
+                binding.tvSaleSubtotal.setText("$" + String.format(Locale.getDefault(), "%.2f", (sale.getSubtotalAmount() != null ? sale.getSubtotalAmount() : sale.getTotalAmount())));
                 
                 if (sale.getCouponDiscountAmount() != null && sale.getCouponDiscountAmount().compareTo(BigDecimal.ZERO) > 0) {
                     binding.llCouponDiscount.setVisibility(View.VISIBLE);
-                    binding.tvSaleCouponDiscount.setText("-$" + sale.getCouponDiscountAmount());
+                    binding.tvSaleCouponDiscount.setText("-$" + String.format(Locale.getDefault(), "%.2f", sale.getCouponDiscountAmount()));
                 } else {
                     binding.llCouponDiscount.setVisibility(View.GONE);
                 }
 
                 if (sale.getEmployeeDiscountAmount() != null && sale.getEmployeeDiscountAmount().compareTo(BigDecimal.ZERO) > 0) {
                     binding.llEmployeeDiscount.setVisibility(View.VISIBLE);
-                    binding.tvSaleEmployeeDiscount.setText("-$" + sale.getEmployeeDiscountAmount());
+                    binding.tvSaleEmployeeDiscount.setText("-$" + String.format(Locale.getDefault(), "%.2f", sale.getEmployeeDiscountAmount()));
                 } else {
                     binding.llEmployeeDiscount.setVisibility(View.GONE);
                 }
 
+                if (sale.getPointsDiscountAmount() != null && sale.getPointsDiscountAmount().compareTo(BigDecimal.ZERO) > 0) {
+                    binding.llLoyaltyDiscount.setVisibility(View.VISIBLE);
+                    binding.tvSaleLoyaltyDiscount.setText("-$" + String.format(Locale.getDefault(), "%.2f", sale.getPointsDiscountAmount()));
+                    if (sale.getPointsUsed() != null) {
+                        binding.tvLoyaltyDiscountLabel.setText("Loyalty Discount (" + sale.getPointsUsed() + " pts):");
+                    }
+                } else if (sale.getLoyaltyDiscountAmount() != null && sale.getLoyaltyDiscountAmount().compareTo(BigDecimal.ZERO) > 0) {
+                    binding.llLoyaltyDiscount.setVisibility(View.VISIBLE);
+                    binding.tvSaleLoyaltyDiscount.setText("-$" + String.format(Locale.getDefault(), "%.2f", sale.getLoyaltyDiscountAmount()));
+                } else {
+                    binding.llLoyaltyDiscount.setVisibility(View.GONE);
+                }
+
                 binding.tvSaleChannel.setText(sale.getChannel() != null ? sale.getChannel() : "—");
                 binding.tvSalePoints.setText(String.valueOf(sale.getPointsEarned() != null ? sale.getPointsEarned() : 0));
                 binding.tvSaleStore.setText(sale.getStoreName() != null ? sale.getStoreName() : "—");
@@ -216,7 +244,7 @@ public class SaleDetailFragment extends Fragment {
         binding.btnApplyCoupon.setOnClickListener(v -> {
             String code = binding.etCouponCode.getText().toString().trim();
             if (code.isEmpty()) {
-                Toast.makeText(getContext(), "Enter a coupon code", Toast.LENGTH_SHORT).show();
+                UIUtils.showToast(getContext(), "Enter a coupon code");
                 return;
             }
             setLoading(true);
@@ -286,7 +314,7 @@ public class SaleDetailFragment extends Fragment {
 
             for (SaleDTO.SaleItemDTO existing : viewModel.getCartItems().getValue()) {
                 if (existing.getProdId().equals(product.getProdId())) {
-                    Toast.makeText(getContext(), "Product already added", Toast.LENGTH_SHORT).show();
+                    UIUtils.showToast(getContext(), "Product already added");
                     return;
                 }
             }
@@ -294,6 +322,19 @@ public class SaleDetailFragment extends Fragment {
             viewModel.addToCart(new SaleDTO.SaleItemDTO(product.getProdId(), qty));
             binding.etSaleQuantity.setText("");
         });
+        SpinnerUtils.setOnIndexSelectedListener(binding.spinnerSaleCustomer, p -> {
+            if (p > 0) {
+                Long id = viewModel.getCustomerList().getValue().get(p - 1).getId();
+                viewModel.selectCustomer(id);
+            } else {
+                viewModel.selectCustomer(null);
+            }
+        });
+
+        binding.cbUseLoyaltyPoints.setOnCheckedChangeListener((v, checked) -> {
+            viewModel.setUseLoyaltyPoints(checked);
+            updateTotal();
+        });
     }
 
     private void renderCartItems() {
@@ -333,7 +374,7 @@ public class SaleDetailFragment extends Fragment {
 
         TextView tvPrice = new TextView(getContext());
         tvPrice.setLayoutParams(new LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 1f));
-        tvPrice.setText(price != null ? "$" + price : "");
+        tvPrice.setText(price != null ? "$" + String.format(Locale.getDefault(), "%.2f", price) : "");
 
         row.addView(tvName);
         row.addView(tvQty);
@@ -357,23 +398,35 @@ public class SaleDetailFragment extends Fragment {
 
     private void updateTotal() {
         BigDecimal subtotal = viewModel.calculateSubtotal();
-        BigDecimal discount = viewModel.calculateDiscount();
+        BigDecimal couponDiscount = viewModel.calculateCouponDiscount();
-        BigDecimal total = subtotal.subtract(discount);
+        BigDecimal loyaltyDiscount = viewModel.calculateLoyaltyDiscount();
-        binding.tvSaleSubtotal.setText("$" + subtotal);
+        BigDecimal total = subtotal.subtract(couponDiscount).subtract(loyaltyDiscount);
-        if (discount.compareTo(BigDecimal.ZERO) > 0) {
+        
+        binding.tvSaleSubtotal.setText("$" + String.format(Locale.getDefault(), "%.2f", subtotal));
+        
+        if (couponDiscount.compareTo(BigDecimal.ZERO) > 0) {
             binding.llCouponDiscount.setVisibility(View.VISIBLE);
-            binding.tvSaleCouponDiscount.setText("-$" + discount);
+            binding.tvSaleCouponDiscount.setText("-$" + String.format(Locale.getDefault(), "%.2f", couponDiscount));
         } else {
             binding.llCouponDiscount.setVisibility(View.GONE);
         }
-        binding.tvSaleDetailTotal.setText("Total: $" + total);
+
+        if (loyaltyDiscount.compareTo(BigDecimal.ZERO) > 0) {
+            binding.llLoyaltyDiscount.setVisibility(View.VISIBLE);
+            binding.tvLoyaltyDiscountLabel.setText("Loyalty Discount (" + viewModel.calculatePointsToUse() + " pts):");
+            binding.tvSaleLoyaltyDiscount.setText("-$" + String.format(Locale.getDefault(), "%.2f", loyaltyDiscount));
+        } else {
+            binding.llLoyaltyDiscount.setVisibility(View.GONE);
+        }
+        
+        binding.tvSaleDetailTotal.setText("Total: $" + String.format(Locale.getDefault(), "%.2f", total));
     }
 
     private void saveSale() {
         if (!InputValidator.isSpinnerSelected(binding.spinnerSaleStore, "Store")) return;
 
         if (viewModel.getCartItems().getValue() == null || viewModel.getCartItems().getValue().isEmpty()) {
-            Toast.makeText(getContext(), "Add at least one item", Toast.LENGTH_SHORT).show();
+            UIUtils.showToast(getContext(), "Add at least one item");
             return;
         }
 
@@ -387,12 +440,16 @@ public class SaleDetailFragment extends Fragment {
 
         SaleDTO dto = new SaleDTO(store.getId(), payment, viewModel.getCartItems().getValue(), false, null, customerId);
         dto.setCouponId(viewModel.getAppliedCouponId());
+        
+        if (Boolean.TRUE.equals(viewModel.getUseLoyaltyPoints().getValue())) {
+            dto.setPointsUsed(viewModel.calculatePointsToUse());
+        }
 
         viewModel.createSale(dto).observe(getViewLifecycleOwner(), resource -> {
             if (resource != null) {
                 setLoading(resource.status == Resource.Status.LOADING);
                 if (resource.status == Resource.Status.SUCCESS) {
-                    Toast.makeText(getContext(), "Sale saved!", Toast.LENGTH_SHORT).show();
+                    UIUtils.showToast(getContext(), "Sale saved!");
                     navigateBack();
                 } else if (resource.status == Resource.Status.ERROR) {
                     DialogUtils.showInfoDialog(requireContext(), "Save Error", resource.message);

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

@@ -161,7 +161,7 @@ public class StaffDetailFragment extends Fragment {
         List<DropdownDTO> stores = viewModel.getStoreList().getValue();
         Long storeId = stores.get(binding.spinnerStaffStore.getSelectedItemPosition() - 1).getId();
 
-        EmployeeDTO dto = new EmployeeDTO(
+        EmployeeDTO dto = viewModel.createEmployeeDto(
                 username,
                 password.isEmpty() ? null : password,
                 firstName,

android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/listprofilefragments/PetProfileFragment.java

@@ -126,7 +126,7 @@ public class PetProfileFragment extends Fragment {
 
                 String status = pet.getPetStatus();
 
-                if ("Adopted".equalsIgnoreCase(status) || "Owned".equalsIgnoreCase(status)) {
+                if ("Adopted".equalsIgnoreCase(status) || "Owned".equalsIgnoreCase(status) || "Pending".equalsIgnoreCase(status)) {
                     binding.layoutPetOwner.setVisibility(View.VISIBLE);
                     if (pet.getCustomerName() != null && !pet.getCustomerName().isEmpty()) {
                         binding.tvPetOwner.setText(pet.getCustomerName());
@@ -137,7 +137,7 @@ public class PetProfileFragment extends Fragment {
                     binding.layoutPetOwner.setVisibility(View.GONE);
                 }
 
-                if ("Available".equalsIgnoreCase(status) || "Adopted".equalsIgnoreCase(status)) {
+                if ("Available".equalsIgnoreCase(status) || "Adopted".equalsIgnoreCase(status) || "Pending".equalsIgnoreCase(status)) {
                     binding.layoutPetStore.setVisibility(View.VISIBLE);
                     if (pet.getStoreName() != null && !pet.getStoreName().isEmpty()) {
                         binding.tvPetStore.setText(pet.getStoreName());

android/app/src/main/java/com/example/petstoremobile/repositories/PetRepository.java

@@ -58,6 +58,10 @@ public class PetRepository extends BaseRepository {
         return executeCall(petApi.getPetSpeciesDropdowns());
     }
 
+    public LiveData<Resource<List<DropdownDTO>>> getPetBreedsDropdowns(String species) {
+        return executeCall(petApi.getPetBreedsDropdowns(species));
+    }
+
     /**
      * Retrieves available pets for a specific store.
      */

android/app/src/main/java/com/example/petstoremobile/utils/InputValidator.java

@@ -100,12 +100,13 @@ public class InputValidator {
         return true;
     }
 
-    // Checks if the phone number is valid
+    // Checks if the phone number is valid in (XXX) XXX-XXXX format
     public static boolean isValidPhone(EditText field) {
         String phone = field.getText().toString().trim();
-        // Android built in phone validation pattern
+        // Matches (XXX) XXX-XXXX format
-        if (phone.isEmpty() || !android.util.Patterns.PHONE.matcher(phone).matches()) {
+        String pattern = "^\\(\\d{3}\\) \\d{3}-\\d{4}$";
-            field.setError("Enter a valid phone number");
+        if (phone.isEmpty() || !phone.matches(pattern)) {
+            field.setError("Enter a valid phone number: (XXX) XXX-XXXX");
             field.requestFocus();
             return false;
         }

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

@@ -31,6 +31,19 @@ public class CustomerDetailViewModel extends ViewModel {
     public long getCustomerId() { return customerId; }
     public boolean isEditing() { return isEditing; }
 
+    public CustomerDTO createCustomerDto(String username, String password, String firstName,
+                                        String lastName, String email, String phone,
+                                        boolean active, Integer loyaltyPoints) {
+        CustomerDTO dto = new CustomerDTO(username, password, firstName, lastName, email, phone);
+        dto.setFullName(firstName + " " + lastName);
+        dto.setActive(active);
+        dto.setRole("CUSTOMER");
+        if (isEditing && loyaltyPoints != null) {
+            dto.setLoyaltyPoints(loyaltyPoints);
+        }
+        return dto;
+    }
+
     public LiveData<Resource<CustomerDTO>> loadCustomer(long id) {
         return repository.getCustomerById(id);
     }

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

@@ -25,6 +25,7 @@ public class PetDetailViewModel extends ViewModel {
     private static final String STATUS_AVAILABLE = "Available";
     private static final String STATUS_ADOPTED = "Adopted";
     private static final String STATUS_OWNED = "Owned";
+    private static final String STATUS_PENDING = "Pending";
 
     private final PetRepository petRepository;
     private final CustomerRepository customerRepository;
@@ -33,6 +34,7 @@ public class PetDetailViewModel extends ViewModel {
     private final MutableLiveData<List<DropdownDTO>> customerList = new MutableLiveData<>(new ArrayList<>());
     private final MutableLiveData<List<DropdownDTO>> storeList = new MutableLiveData<>(new ArrayList<>());
     private final MutableLiveData<List<DropdownDTO>> speciesList = new MutableLiveData<>(new ArrayList<>());
+    private final MutableLiveData<List<DropdownDTO>> breedList = new MutableLiveData<>(new ArrayList<>());
     private final MutableLiveData<Boolean> isLoading = new MutableLiveData<>(false);
     private final MutableLiveData<ViewState> viewState = new MutableLiveData<>(new ViewState());
 
@@ -40,6 +42,7 @@ public class PetDetailViewModel extends ViewModel {
     private Long selectedCustomerId = null;
     private Long selectedStoreId = null;
     private String selectedSpecies = null;
+    private String selectedBreed = null;
     private boolean isOriginallyOwnedOrAdopted = false;
     private Long originalCustomerId = null;
 
@@ -111,10 +114,33 @@ public class PetDetailViewModel extends ViewModel {
         List<DropdownDTO> list = speciesList.getValue();
         if (position > 0 && list != null && position <= list.size()) {
             selectedSpecies = list.get(position - 1).getLabel();
+            loadBreeds(selectedSpecies);
         } else {
             selectedSpecies = null;
+            breedList.setValue(new ArrayList<>());
         }
-        updateViewState(state -> state.selectedSpecies = selectedSpecies);
+        updateViewState(state -> {
+            state.selectedSpecies = selectedSpecies;
+            state.isBreedEnabled = !state.isEditing && (selectedSpecies != null);
+        });
+    }
+
+    public void onBreedSelected(int position) {
+        List<DropdownDTO> list = breedList.getValue();
+        if (position > 0 && list != null && position <= list.size()) {
+            selectedBreed = list.get(position - 1).getLabel();
+        } else {
+            selectedBreed = null;
+        }
+        updateViewState(state -> state.selectedBreed = selectedBreed);
+    }
+
+    private void loadBreeds(String species) {
+        observeOnce(petRepository.getPetBreedsDropdowns(species), resource -> {
+            if (resource != null && resource.status == Resource.Status.SUCCESS && resource.data != null) {
+                breedList.setValue(resource.data);
+            }
+        });
     }
 
     public void onStoreSelected(int position) {
@@ -154,12 +180,15 @@ public class PetDetailViewModel extends ViewModel {
                 selectedCustomerId = null;
                 selectedStoreId = null;
                 selectedSpecies = null;
+                selectedBreed = null;
                 state.selectedCustomerId = null;
                 state.selectedStoreId = null;
                 state.selectedSpecies = null;
+                state.selectedBreed = null;
                 state.selectedStatus = STATUS_AVAILABLE;
                 state.isCustomerEnabled = false;
                 state.isStoreEnabled = true;
+                state.isBreedEnabled = false;
             }
         });
     }
@@ -172,15 +201,22 @@ public class PetDetailViewModel extends ViewModel {
                 selectedCustomerId = pet.getCustomerId();
                 selectedStoreId = pet.getStoreId();
                 selectedSpecies = pet.getPetSpecies();
+                selectedBreed = pet.getPetBreed();
                 isOriginallyOwnedOrAdopted = STATUS_OWNED.equalsIgnoreCase(pet.getPetStatus())
                         || STATUS_ADOPTED.equalsIgnoreCase(pet.getPetStatus());
                 originalCustomerId = pet.getCustomerId();
 
+                if (selectedSpecies != null) {
+                    loadBreeds(selectedSpecies);
+                }
+
                 updateViewState(state -> {
                     state.selectedCustomerId = selectedCustomerId;
                     state.selectedStoreId = selectedStoreId;
                     state.selectedSpecies = selectedSpecies;
+                    state.selectedBreed = selectedBreed;
                     state.selectedStatus = normalizeStatus(pet.getPetStatus());
+                    state.isBreedEnabled = !state.isEditing && (selectedSpecies != null);
                     applyStatusRules(state, false);
                 });
             }
@@ -215,6 +251,10 @@ public class PetDetailViewModel extends ViewModel {
         return speciesList;
     }
 
+    public LiveData<List<DropdownDTO>> getBreedList() {
+        return breedList;
+    }
+
     public LiveData<Boolean> getIsLoading() {
         return isLoading;
     }
@@ -253,6 +293,7 @@ public class PetDetailViewModel extends ViewModel {
         String normalized = status.trim();
         if (STATUS_ADOPTED.equalsIgnoreCase(normalized)) return STATUS_ADOPTED;
         if (STATUS_OWNED.equalsIgnoreCase(normalized)) return STATUS_OWNED;
+        if (STATUS_PENDING.equalsIgnoreCase(normalized)) return STATUS_PENDING;
         return STATUS_AVAILABLE;
     }
 
@@ -290,9 +331,10 @@ public class PetDetailViewModel extends ViewModel {
         public boolean isStoreEnabled = true;
         public String modeTitle = "Add Pet";
         public String saveButtonText = "Add";
-        public String[] availableStatuses = new String[]{STATUS_AVAILABLE, STATUS_ADOPTED, STATUS_OWNED};
+        public String[] availableStatuses = new String[]{STATUS_AVAILABLE, STATUS_ADOPTED, STATUS_OWNED, STATUS_PENDING};
         public String selectedStatus = STATUS_AVAILABLE;
         public String selectedSpecies = null;
+        public String selectedBreed = null;
         public Long selectedCustomerId = null;
         public Long selectedStoreId = null;
     }

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

@@ -10,6 +10,7 @@ import com.example.petstoremobile.repositories.SaleRepository;
 import com.example.petstoremobile.utils.Resource;
 
 import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -125,6 +126,33 @@ public class RefundViewModel extends ViewModel {
         refundCart.setValue(cart);
     }
 
+    public BigDecimal calculateRefundTotal() {
+        SaleDTO sale = currentSale.getValue();
+        List<RefundItem> cart = refundCart.getValue();
+        if (sale == null || cart == null || cart.isEmpty()) return BigDecimal.ZERO;
+
+        BigDecimal cartSubtotal = BigDecimal.ZERO;
+        for (RefundItem item : cart) cartSubtotal = cartSubtotal.add(item.getTotal());
+
+        BigDecimal originalSubtotal = sale.getSubtotalAmount();
+        if (originalSubtotal == null || originalSubtotal.compareTo(BigDecimal.ZERO) == 0) {
+            if (sale.getItems() != null) {
+                originalSubtotal = BigDecimal.ZERO;
+                for (SaleDTO.SaleItemDTO item : sale.getItems()) {
+                    if (item.getUnitPrice() != null && item.getQuantity() != null)
+                        originalSubtotal = originalSubtotal.add(item.getUnitPrice().multiply(BigDecimal.valueOf(Math.abs(item.getQuantity()))));
+                }
+            }
+        }
+        if (originalSubtotal == null || originalSubtotal.compareTo(BigDecimal.ZERO) == 0) return cartSubtotal;
+
+        BigDecimal originalTotal = sale.getTotalAmount();
+        if (originalTotal == null) return cartSubtotal;
+
+        BigDecimal ratio = cartSubtotal.divide(originalSubtotal, 10, RoundingMode.HALF_UP);
+        return originalTotal.abs().multiply(ratio).setScale(2, RoundingMode.HALF_UP);
+    }
+
     public LiveData<Resource<SaleDTO>> submitRefund(String paymentMethod) {
         SaleDTO sale = currentSale.getValue();
         List<RefundItem> cart = refundCart.getValue();

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

@@ -5,6 +5,7 @@ import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
 import com.example.petstoremobile.dtos.CouponDTO;
+import com.example.petstoremobile.dtos.CustomerDTO;
 import com.example.petstoremobile.dtos.DropdownDTO;
 import com.example.petstoremobile.dtos.ProductDTO;
 import com.example.petstoremobile.dtos.SaleDTO;
@@ -39,6 +40,8 @@ public class SaleDetailViewModel extends ViewModel {
     private final MutableLiveData<List<ProductDTO>> productList = new MutableLiveData<>(new ArrayList<>());
     private final MutableLiveData<List<SaleDTO.SaleItemDTO>> cartItems = new MutableLiveData<>(new ArrayList<>());
     private final MutableLiveData<CouponDTO> appliedCoupon = new MutableLiveData<>(null);
+    private final MutableLiveData<CustomerDTO> selectedCustomerData = new MutableLiveData<>(null);
+    private final MutableLiveData<Boolean> useLoyaltyPoints = new MutableLiveData<>(false);
     private final MutableLiveData<Boolean> isLoading = new MutableLiveData<>(false);
 
     @Inject
@@ -111,6 +114,34 @@ public class SaleDetailViewModel extends ViewModel {
         appliedCoupon.setValue(coupon);
     }
 
+    public void setUseLoyaltyPoints(boolean use) {
+        useLoyaltyPoints.setValue(use);
+    }
+
+    public LiveData<Boolean> getUseLoyaltyPoints() {
+        return useLoyaltyPoints;
+    }
+
+    public LiveData<CustomerDTO> getSelectedCustomerData() {
+        return selectedCustomerData;
+    }
+
+    public void selectCustomer(Long customerId) {
+        if (customerId == null) {
+            selectedCustomerData.setValue(null);
+            useLoyaltyPoints.setValue(false);
+            return;
+        }
+        customerRepository.getCustomerById(customerId).observeForever(new androidx.lifecycle.Observer<Resource<CustomerDTO>>() {
+            @Override
+            public void onChanged(Resource<CustomerDTO> resource) {
+                if (resource != null && resource.status == Resource.Status.SUCCESS) {
+                    selectedCustomerData.setValue(resource.data);
+                }
+            }
+        });
+    }
+
     public void clearCoupon() {
         appliedCoupon.setValue(null);
     }
@@ -125,6 +156,10 @@ public class SaleDetailViewModel extends ViewModel {
     }
 
     public BigDecimal calculateDiscount() {
+        return calculateCouponDiscount().add(calculateLoyaltyDiscount());
+    }
+
+    public BigDecimal calculateCouponDiscount() {
         CouponDTO coupon = appliedCoupon.getValue();
         if (coupon == null || coupon.getDiscountValue() == null) return BigDecimal.ZERO;
         BigDecimal subtotal = calculateSubtotal();
@@ -135,6 +170,25 @@ public class SaleDetailViewModel extends ViewModel {
         }
     }
 
+    public BigDecimal calculateLoyaltyDiscount() {
+        if (Boolean.FALSE.equals(useLoyaltyPoints.getValue())) return BigDecimal.ZERO;
+        CustomerDTO customer = selectedCustomerData.getValue();
+        if (customer == null || customer.getLoyaltyPoints() == null || customer.getLoyaltyPoints() < 20) {
+            return BigDecimal.ZERO;
+        }
+
+        BigDecimal subtotalAfterCoupon = calculateSubtotal().subtract(calculateCouponDiscount());
+        int maxPointsNeeded = subtotalAfterCoupon.multiply(BigDecimal.valueOf(20)).intValue();
+        int pointsToUse = Math.min(customer.getLoyaltyPoints(), maxPointsNeeded);
+
+        return BigDecimal.valueOf(pointsToUse).multiply(BigDecimal.valueOf(0.05)).setScale(2, java.math.RoundingMode.HALF_UP);
+    }
+
+    public int calculatePointsToUse() {
+        BigDecimal loyaltyDiscount = calculateLoyaltyDiscount();
+        return loyaltyDiscount.divide(BigDecimal.valueOf(0.05), 0, java.math.RoundingMode.HALF_UP).intValue();
+    }
+
     public BigDecimal calculateSubtotal() {
         BigDecimal total = BigDecimal.ZERO;
         List<SaleDTO.SaleItemDTO> items = cartItems.getValue();

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

@@ -60,6 +60,14 @@ public class StaffDetailViewModel extends ViewModel {
         return isEditing;
     }
 
+    public EmployeeDTO createEmployeeDto(String username, String password, String firstName,
+                                        String lastName, String email, String phone,
+                                        String role, String staffRole, boolean active, Long storeId) {
+        EmployeeDTO dto = new EmployeeDTO(username, password, firstName, lastName, email, phone, role, staffRole, active, storeId);
+        dto.setFullName(firstName + " " + lastName);
+        return dto;
+    }
+
     public LiveData<Resource<EmployeeDTO>> saveEmployee(EmployeeDTO dto) {
         if (isEditing && employeeId > 0) {
             return repository.updateEmployee(employeeId, dto);

android/app/src/main/res/layout/fragment_customer_detail.xml

@@ -195,14 +195,13 @@
                         android:textSize="12sp"
                         android:layout_marginBottom="4dp"/>
 
-                    <TextView
+                    <EditText
-                        android:id="@+id/tvCustomerLoyaltyPoints"
+                        android:id="@+id/etCustomerLoyaltyPoints"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
-                        android:text="0"
+                        android:hint="0"
-                        android:textColor="@color/text_dark"
+                        android:inputType="number"
-                        android:textSize="16sp"
+                        android:layout_marginBottom="16dp"/>
-                        android:layout_marginBottom="8dp"/>
 
                 </LinearLayout>
 

android/app/src/main/res/layout/fragment_pet_detail.xml

@@ -109,14 +109,11 @@
                         android:textSize="12sp"
                         android:layout_marginBottom="4dp"/>
 
-                    <EditText
+                    <Spinner
-                        android:id="@+id/etPetBreed"
+                        android:id="@+id/spinnerPetBreed"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
-                        android:hint="Enter breed"
+                        android:layout_marginBottom="16dp"/>
-                        android:inputType="text"
-                        android:layout_marginBottom="16dp"
-                        android:textColor="@color/text_dark"/>
 
                     <TextView
                         android:layout_width="wrap_content"

android/app/src/main/res/layout/fragment_sale_detail.xml

@@ -128,7 +128,30 @@
                         android:id="@+id/spinnerSaleCustomer"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
-                        android:layout_marginBottom="16dp"/>
+                        android:layout_marginBottom="8dp"/>
+
+                    <LinearLayout
+                        android:id="@+id/llLoyaltyPoints"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:orientation="horizontal"
+                        android:gravity="center_vertical"
+                        android:layout_marginBottom="16dp"
+                        android:visibility="gone">
+                        <CheckBox
+                            android:id="@+id/cbUseLoyaltyPoints"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="Use Loyalty Points"/>
+                        <TextView
+                            android:id="@+id/tvAvailablePoints"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:layout_marginStart="8dp"
+                            android:textColor="@color/text_light"
+                            android:textSize="12sp"
+                            android:text="(Available: 0)"/>
+                    </LinearLayout>
 
                     <!-- Payment Method -->
                     <TextView
@@ -390,6 +413,27 @@
                                 android:textColor="@color/status_adopted"/>
                         </LinearLayout>
 
+                        <LinearLayout
+                            android:id="@+id/llLoyaltyDiscount"
+                            android:layout_width="match_parent"
+                            android:layout_height="wrap_content"
+                            android:orientation="horizontal"
+                            android:layout_marginTop="4dp"
+                            android:visibility="gone">
+                            <TextView
+                                android:id="@+id/tvLoyaltyDiscountLabel"
+                                android:layout_width="0dp"
+                                android:layout_height="wrap_content"
+                                android:layout_weight="1"
+                                android:text="Loyalty Discount:"/>
+                            <TextView
+                                android:id="@+id/tvSaleLoyaltyDiscount"
+                                android:layout_width="wrap_content"
+                                android:layout_height="wrap_content"
+                                android:text="-$0.00"
+                                android:textColor="@color/status_adopted"/>
+                        </LinearLayout>
+
                         <TextView
                             android:id="@+id/tvSaleDetailTotal"
                             android:layout_width="wrap_content"

backend/src/main/java/com/petshop/backend/dto/sale/SaleRequest.java

@@ -5,6 +5,7 @@ import jakarta.validation.constraints.NotEmpty;
 import jakarta.validation.constraints.NotNull;
 import java.util.List;
 import java.util.Objects;
+import java.math.BigDecimal;
 
 public class SaleRequest {
     @NotNull(message = "Store ID is required")
@@ -28,7 +29,9 @@ public class SaleRequest {
 
     private Long cartId;
 
-    private Boolean useLoyaltyPoints = false;
+    private Integer pointsUsed;
+
+    private BigDecimal pointsDiscountAmount;
 
     public Long getStoreId() {
         return storeId;
@@ -102,12 +105,20 @@ public class SaleRequest {
         this.cartId = cartId;
     }
 
-    public Boolean getUseLoyaltyPoints() {
+    public Integer getPointsUsed() {
-        return useLoyaltyPoints;
+        return pointsUsed;
     }
 
-    public void setUseLoyaltyPoints(Boolean useLoyaltyPoints) {
+    public void setPointsUsed(Integer pointsUsed) {
-        this.useLoyaltyPoints = useLoyaltyPoints;
+        this.pointsUsed = pointsUsed;
+    }
+
+    public BigDecimal getPointsDiscountAmount() {
+        return pointsDiscountAmount;
+    }
+
+    public void setPointsDiscountAmount(BigDecimal pointsDiscountAmount) {
+        this.pointsDiscountAmount = pointsDiscountAmount;
     }
 
     @Override

backend/src/main/java/com/petshop/backend/dto/sale/SaleResponse.java

@@ -21,6 +21,8 @@ public class SaleResponse {
     private BigDecimal loyaltyDiscountAmount;
     private Integer pointsUsed;
     private Integer pointsEarned;
+    private Integer pointsUsed;
+    private BigDecimal pointsDiscountAmount;
     private String channel;
     private Long couponId;
     private Long cartId;
@@ -153,6 +155,22 @@ public class SaleResponse {
         this.pointsEarned = pointsEarned;
     }
 
+    public Integer getPointsUsed() {
+        return pointsUsed;
+    }
+
+    public void setPointsUsed(Integer pointsUsed) {
+        this.pointsUsed = pointsUsed;
+    }
+
+    public BigDecimal getPointsDiscountAmount() {
+        return pointsDiscountAmount;
+    }
+
+    public void setPointsDiscountAmount(BigDecimal pointsDiscountAmount) {
+        this.pointsDiscountAmount = pointsDiscountAmount;
+    }
+
     public String getChannel() {
         return channel;
     }

backend/src/main/java/com/petshop/backend/dto/user/UserRequest.java

@@ -39,6 +39,8 @@ public class UserRequest {
 
     private Boolean active = true;
 
+    private Integer loyaltyPoints;
+
     public String getUsername() {
         return username;
     }
@@ -127,6 +129,14 @@ public class UserRequest {
         this.active = active;
     }
 
+    public Integer getLoyaltyPoints() {
+        return loyaltyPoints;
+    }
+
+    public void setLoyaltyPoints(Integer loyaltyPoints) {
+        this.loyaltyPoints = loyaltyPoints;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;

backend/src/main/java/com/petshop/backend/entity/Sale.java

@@ -75,6 +75,12 @@ public class Sale {
     @Column(nullable = false)
     private Integer pointsEarned = 0;
 
+    @Column(nullable = false)
+    private Integer pointsUsed = 0;
+
+    @Column(nullable = false, precision = 10, scale = 2)
+    private BigDecimal pointsDiscountAmount = BigDecimal.ZERO;
+
     @OneToMany(mappedBy = "sale", cascade = CascadeType.ALL)
     private List<SaleItem> items = new ArrayList<>();
 
@@ -233,6 +239,22 @@ public class Sale {
         this.pointsEarned = pointsEarned;
     }
 
+    public Integer getPointsUsed() {
+        return pointsUsed;
+    }
+
+    public void setPointsUsed(Integer pointsUsed) {
+        this.pointsUsed = pointsUsed;
+    }
+
+    public BigDecimal getPointsDiscountAmount() {
+        return pointsDiscountAmount;
+    }
+
+    public void setPointsDiscountAmount(BigDecimal pointsDiscountAmount) {
+        this.pointsDiscountAmount = pointsDiscountAmount;
+    }
+
     public List<SaleItem> getItems() {
         return items;
     }

backend/src/main/java/com/petshop/backend/repository/PetRepository.java

@@ -19,7 +19,7 @@ public interface PetRepository extends JpaRepository<Pet, Long> {
            "WHERE LOWER(p.petStatus) = 'available' " +
            "AND NOT EXISTS (" +
            "    SELECT 1 FROM Adoption a " +
-           "    WHERE a.pet = p AND LOWER(a.adoptionStatus) = 'completed'" +
+           "    WHERE a.pet = p AND (LOWER(a.adoptionStatus) = 'completed' OR LOWER(a.adoptionStatus) = 'pending')" +
            ") " +
            "ORDER BY p.petName ASC")
     List<Pet> findAdoptablePetsOrderByPetNameAsc();
@@ -29,7 +29,7 @@ public interface PetRepository extends JpaRepository<Pet, Long> {
            "AND (:storeId IS NULL OR p.store.storeId = :storeId) " +
            "AND NOT EXISTS (" +
            "    SELECT 1 FROM Adoption a " +
-           "    WHERE a.pet = p AND LOWER(a.adoptionStatus) = 'completed'" +
+           "    WHERE a.pet = p AND (LOWER(a.adoptionStatus) = 'completed' OR LOWER(a.adoptionStatus) = 'pending')" +
            ") " +
            "ORDER BY p.petName ASC")
     List<Pet> findAdoptablePetsByStore(@Param("storeId") Long storeId);

backend/src/main/java/com/petshop/backend/service/AdoptionService.java

@@ -32,6 +32,7 @@ public class AdoptionService {
     private static final String ADOPTION_STATUS_MISSED = "Missed";
     private static final String PET_STATUS_AVAILABLE = "Available";
     private static final String PET_STATUS_ADOPTED = "Adopted";
+    private static final String PET_STATUS_PENDING = "Pending";
 
     private final AdoptionRepository adoptionRepository;
     private final PetRepository petRepository;
@@ -263,10 +264,14 @@ public class AdoptionService {
     private void syncPetStatus(Pet pet, String adoptionStatus, Long adoptionId, User customer) {
         boolean completedElsewhere = adoptionId != null
                 && adoptionRepository.existsByPet_IdAndAdoptionStatusIgnoreCaseAndAdoptionIdNot(pet.getPetId(), ADOPTION_STATUS_COMPLETED, adoptionId);
+
         if (ADOPTION_STATUS_COMPLETED.equalsIgnoreCase(adoptionStatus) || completedElsewhere) {
             pet.setPetStatus(PET_STATUS_ADOPTED);
             pet.setOwner(customer);
             pet.setStore(null);
+        } else if (ADOPTION_STATUS_PENDING.equalsIgnoreCase(adoptionStatus)) {
+            pet.setPetStatus(PET_STATUS_PENDING);
+            pet.setOwner(customer);
         } else {
             pet.setPetStatus(PET_STATUS_AVAILABLE);
             pet.setOwner(null);

backend/src/main/java/com/petshop/backend/service/SaleService.java

@@ -160,14 +160,33 @@ public class SaleService {
                 saleItems.add(saleItem);
                 subtotalAmount = subtotalAmount.add(itemTotal);
             }
-            subtotalAmount = subtotalAmount.negate();
+
-            sale.setSubtotalAmount(subtotalAmount);
+            Sale originalSale = sale.getOriginalSale();
-            sale.setTotalAmount(subtotalAmount);
+            BigDecimal originalSubtotal = originalSale.getSubtotalAmount() != null
-            sale.setCouponDiscountAmount(BigDecimal.ZERO);
+                    ? originalSale.getSubtotalAmount()
-            sale.setEmployeeDiscountAmount(BigDecimal.ZERO);
+                    : originalSale.getItems().stream()
-            sale.setLoyaltyDiscountAmount(BigDecimal.ZERO);
+                            .map(i -> i.getUnitPrice().multiply(BigDecimal.valueOf(Math.abs(i.getQuantity()))))
-            sale.setPointsUsed(0);
+                            .reduce(BigDecimal.ZERO, BigDecimal::add);
-            sale.setPointsEarned(0);
+
+            BigDecimal refundRatio = originalSubtotal.compareTo(BigDecimal.ZERO) != 0
+                    ? subtotalAmount.divide(originalSubtotal, 10, RoundingMode.HALF_UP)
+                    : BigDecimal.ONE;
+
+            BigDecimal refundTotal = originalSale.getTotalAmount().abs()
+                    .multiply(refundRatio).setScale(2, RoundingMode.HALF_UP);
+
+            sale.setSubtotalAmount(subtotalAmount.negate());
+            sale.setTotalAmount(refundTotal.negate());
+
+            User refundCustomer = customer != null ? customer : originalSale.getCustomer();
+            if (refundCustomer != null) {
+                int pointsToRestore = BigDecimal.valueOf(originalSale.getPointsUsed())
+                        .multiply(refundRatio).setScale(0, RoundingMode.FLOOR).intValue();
+                int pointsToDeduct = BigDecimal.valueOf(originalSale.getPointsEarned())
+                        .multiply(refundRatio).setScale(0, RoundingMode.FLOOR).intValue();
+                refundCustomer.setLoyaltyPoints(refundCustomer.getLoyaltyPoints() + pointsToRestore - pointsToDeduct);
+                userRepository.save(refundCustomer);
+            }
         } else {
             if (request.getItems() == null || request.getItems().isEmpty()) {
                 throw new BusinessException("At least one item is required");
@@ -204,14 +223,23 @@ public class SaleService {
             BigDecimal couponDiscount = calculateCouponDiscount(sale.getCoupon(), subtotalAmount);
             sale.setCouponDiscountAmount(couponDiscount);
 
-            BigDecimal employeeDiscount = calculateEmployeeDiscount(customer, subtotalAmount.subtract(couponDiscount));
+            BigDecimal pointsDiscount = BigDecimal.ZERO;
+            int pointsUsed = 0;
+            if (customer != null && request.getPointsUsed() != null && request.getPointsUsed() > 0) {
+                if (customer.getLoyaltyPoints() < request.getPointsUsed()) {
+                    throw new BusinessException("Customer does not have enough loyalty points");
+                }
+                pointsUsed = request.getPointsUsed();
+                pointsDiscount = calculatePointsDiscount(pointsUsed);
+                customer.setLoyaltyPoints(customer.getLoyaltyPoints() - pointsUsed);
+            }
+            sale.setPointsUsed(pointsUsed);
+            sale.setPointsDiscountAmount(pointsDiscount);
+
+            BigDecimal employeeDiscount = calculateEmployeeDiscount(customer, subtotalAmount.subtract(couponDiscount).subtract(pointsDiscount));
             sale.setEmployeeDiscountAmount(employeeDiscount);
 
-            BigDecimal loyaltyDiscount = calculateLoyaltyDiscount(customer, subtotalAmount.subtract(couponDiscount).subtract(employeeDiscount), Boolean.TRUE.equals(request.getUseLoyaltyPoints()));
+            BigDecimal finalTotal = subtotalAmount.subtract(couponDiscount).subtract(pointsDiscount).subtract(employeeDiscount);
-            sale.setLoyaltyDiscountAmount(loyaltyDiscount);
-            sale.setPointsUsed(toPointsUsed(loyaltyDiscount));
-
-            BigDecimal finalTotal = subtotalAmount.subtract(couponDiscount).subtract(employeeDiscount).subtract(loyaltyDiscount);
             sale.setTotalAmount(finalTotal.max(BigDecimal.ZERO));
 
             sale.setPointsEarned(sale.getTotalAmount().setScale(0, RoundingMode.FLOOR).intValue());
@@ -262,6 +290,10 @@ public class SaleService {
         return discount.min(subtotal).setScale(2, RoundingMode.HALF_UP);
     }
 
+    private BigDecimal calculatePointsDiscount(int pointsUsed) {
+        return new BigDecimal(pointsUsed).divide(new BigDecimal("20"), 2, RoundingMode.HALF_UP);
+    }
+
     private BigDecimal calculateEmployeeDiscount(User customer, BigDecimal remainingAmount) {
         if (customer == null || remainingAmount.compareTo(BigDecimal.ZERO) <= 0) {
             return BigDecimal.ZERO;
@@ -328,6 +360,8 @@ public class SaleService {
         response.setLoyaltyDiscountAmount(sale.getLoyaltyDiscountAmount());
         response.setPointsUsed(sale.getPointsUsed());
         response.setPointsEarned(sale.getPointsEarned());
+        response.setPointsUsed(sale.getPointsUsed());
+        response.setPointsDiscountAmount(sale.getPointsDiscountAmount());
         response.setChannel(sale.getChannel());
         if (sale.getCoupon() != null) {
             response.setCouponId(sale.getCoupon().getCouponId());

backend/src/main/java/com/petshop/backend/service/UserService.java

@@ -75,6 +75,9 @@ public class UserService {
         user.setStaffRole(trimToNull(request.getStaffRole()));
         user.setPrimaryStore(resolveStore(request.getPrimaryStoreId()));
         user.setActive(request.getActive() != null ? request.getActive() : true);
+        if (request.getLoyaltyPoints() != null) {
+            user.setLoyaltyPoints(request.getLoyaltyPoints());
+        }
 
         validateUniquePhone(user.getPhone(), null);
 
@@ -111,6 +114,9 @@ public class UserService {
         user.setStaffRole(trimToNull(request.getStaffRole()));
         user.setPrimaryStore(resolveStore(request.getPrimaryStoreId()));
         user.setActive(request.getActive() != null ? request.getActive() : true);
+        if (request.getLoyaltyPoints() != null) {
+            user.setLoyaltyPoints(request.getLoyaltyPoints());
+        }
         if (invalidateToken) {
             user.setTokenVersion(user.getTokenVersion() + 1);
         }

backend/src/main/resources/db/migration/V5__add_points_columns_to_sale.sql

@@ -0,0 +1,3 @@
+ALTER TABLE sale
+    ADD COLUMN pointsUsed INT NOT NULL DEFAULT 0,
+    ADD COLUMN pointsDiscountAmount DECIMAL(10, 2) NOT NULL DEFAULT 0.00;

backend/src/main/resources/dev/final-target/final_target_schema.sql

@@ -230,6 +230,8 @@ CREATE TABLE IF NOT EXISTS sale (
     couponDiscountAmount DECIMAL(10, 2) NOT NULL DEFAULT 0.00,
     employeeDiscountAmount DECIMAL(10, 2) NOT NULL DEFAULT 0.00,
     pointsEarned INT NOT NULL DEFAULT 0,
+    pointsUsed INT NOT NULL DEFAULT 0,
+    pointsDiscountAmount DECIMAL(10, 2) NOT NULL DEFAULT 0.00,
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
     CONSTRAINT fk_sale_employee FOREIGN KEY (employeeId) REFERENCES users(id),

desktop/src/main/java/org/example/petshopdesktop/Validator.java

@@ -183,7 +183,7 @@ public class Validator {
     }
 
     /**
-     * Checks if the input is a valid phone number in format XXX-XXX-XXXX
+     * Checks if the input is a valid phone number in format (XXX) XXX-XXXX
      * @param value input of string
      * @param name name of input
      * @return error msg if input is not in valid phone format, otherwise empty
@@ -191,14 +191,14 @@ public class Validator {
     public static String isValidPhoneNumber(String value, String name){
         String msg = "";
         if (value == null) {
-            msg += name + " must be in format XXX-XXX-XXXX. \n";
+            msg += name + " must be in format (XXX) XXX-XXXX. \n";
 
             return msg;
         }
-        String regex = "^\\d{3}-\\d{3}-\\d{4}$";
+        String regex = "^\\(\\d{3}\\) \\d{3}-\\d{4}$";
 
         if (!value.matches(regex)){
-            msg += name + " must be in format XXX-XXX-XXXX. \n";
+            msg += name + " must be in format (XXX) XXX-XXXX. \n";
         }
 
         return msg;

desktop/src/main/java/org/example/petshopdesktop/api/dto/user/UserResponse.java

@@ -10,6 +10,7 @@ public class UserResponse {
     private String phone;
     private String role;
     private Boolean active;
+    private Integer loyaltyPoints;
     private LocalDateTime createdAt;
     private LocalDateTime updatedAt;
 
@@ -72,6 +73,14 @@ public class UserResponse {
         this.active = active;
     }
 
+    public Integer getLoyaltyPoints() {
+        return loyaltyPoints;
+    }
+
+    public void setLoyaltyPoints(Integer loyaltyPoints) {
+        this.loyaltyPoints = loyaltyPoints;
+    }
+
     public LocalDateTime getCreatedAt() {
         return createdAt;
     }

desktop/src/main/java/org/example/petshopdesktop/api/endpoints/DropdownApi.java

@@ -42,6 +42,15 @@ public class DropdownApi {
         return apiClient.getObjectMapper().readValue(response, new TypeReference<List<DropdownOption>>() {});
     }
 
+    public List<DropdownOption> getPetBreeds(String species) throws Exception {
+        String encoded = java.net.URLEncoder.encode(species, java.nio.charset.StandardCharsets.UTF_8);
+        String response = apiClient.getRawResponse("/api/v1/dropdowns/pet-breeds?species=" + encoded);
+        if (response == null || response.isEmpty()) {
+            throw new IllegalStateException("Empty response from pet breeds endpoint");
+        }
+        return apiClient.getObjectMapper().readValue(response, new TypeReference<List<DropdownOption>>() {});
+    }
+
     public List<DropdownOption> getProducts() throws Exception {
         String response = apiClient.getRawResponse("/api/v1/dropdowns/products");
         if (response == null || response.isEmpty()) {

desktop/src/main/java/org/example/petshopdesktop/controllers/CustomerAccountsController.java

@@ -0,0 +1,172 @@
+package org.example.petshopdesktop.controllers;
+
+import javafx.application.Platform;
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import javafx.collections.transformation.FilteredList;
+import javafx.event.ActionEvent;
+import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Scene;
+import javafx.scene.control.*;
+import javafx.stage.Modality;
+import javafx.stage.Stage;
+import org.example.petshopdesktop.api.dto.user.UserResponse;
+import org.example.petshopdesktop.api.endpoints.CustomerApi;
+import org.example.petshopdesktop.util.ActivityLogger;
+import org.example.petshopdesktop.util.TableViewSupport;
+
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class CustomerAccountsController {
+
+    @FXML
+    private TableView<UserResponse> tvCustomers;
+
+    @FXML
+    private TableColumn<UserResponse, String> colCustomerUsername;
+
+    @FXML
+    private TableColumn<UserResponse, String> colCustomerName;
+
+    @FXML
+    private TableColumn<UserResponse, String> colCustomerEmail;
+
+    @FXML
+    private TableColumn<UserResponse, String> colCustomerPhone;
+
+    @FXML
+    private TableColumn<UserResponse, Object> colCustomerLoyaltyPoints;
+
+    @FXML
+    private TableColumn<UserResponse, String> colCustomerStatus;
+
+    @FXML
+    private TableColumn<UserResponse, Object> colCustomerCreated;
+
+    @FXML
+    private TextField txtSearchCustomer;
+
+    @FXML
+    private Button btnEditCustomer;
+
+    @FXML
+    private Button btnRefresh;
+
+    @FXML
+    private Label lblError;
+
+    @FXML
+    private Label lblStatus;
+
+    private final ObservableList<UserResponse> customerAccounts = FXCollections.observableArrayList();
+    private FilteredList<UserResponse> filteredCustomers;
+
+    @FXML
+    public void initialize() {
+        colCustomerUsername.setCellValueFactory(data -> new javafx.beans.property.SimpleStringProperty(data.getValue().getUsername()));
+        colCustomerName.setCellValueFactory(data -> new javafx.beans.property.SimpleStringProperty(data.getValue().getFullName()));
+        colCustomerEmail.setCellValueFactory(data -> new javafx.beans.property.SimpleStringProperty(data.getValue().getEmail()));
+        colCustomerPhone.setCellValueFactory(data -> new javafx.beans.property.SimpleStringProperty(data.getValue().getPhone()));
+        colCustomerLoyaltyPoints.setCellValueFactory(data -> new javafx.beans.property.SimpleObjectProperty<>(data.getValue().getLoyaltyPoints()));
+        colCustomerStatus.setCellValueFactory(data -> new javafx.beans.property.SimpleStringProperty(data.getValue().getActive() != null && data.getValue().getActive() ? "Active" : "Inactive"));
+        colCustomerCreated.setCellValueFactory(data -> new javafx.beans.property.SimpleObjectProperty<>(data.getValue().getCreatedAt()));
+
+        filteredCustomers = new FilteredList<>(customerAccounts, a -> true);
+        TableViewSupport.bindSortedItems(tvCustomers, filteredCustomers);
+        TableViewSupport.installDoubleClickAction(tvCustomers, this::openEditDialog);
+
+        tvCustomers.getSelectionModel().selectedItemProperty().addListener((obs, oldVal, newVal) ->
+                btnEditCustomer.setDisable(newVal == null));
+        btnEditCustomer.setDisable(true);
+
+        txtSearchCustomer.textProperty().addListener((obs, o, n) -> applyCustomerFilter(n));
+
+        refresh();
+    }
+
+    @FXML
+    void btnRefreshClicked(ActionEvent event) {
+        txtSearchCustomer.clear();
+        TableViewSupport.clearSort(tvCustomers);
+        refresh();
+        TableViewSupport.flashStatus(lblStatus, "Refreshed");
+    }
+
+    @FXML
+    void btnEditCustomerClicked(ActionEvent event) {
+        lblError.setText("");
+        openEditDialog(tvCustomers.getSelectionModel().getSelectedItem());
+    }
+
+    private void openEditDialog(UserResponse selected) {
+        if (selected == null) {
+            lblError.setText("Select a customer to edit.");
+            return;
+        }
+
+        try {
+            FXMLLoader loader = new FXMLLoader(getClass().getResource("/org/example/petshopdesktop/dialogviews/staff-edit-dialog-view.fxml"));
+            Stage dialog = new Stage();
+            dialog.initOwner(tvCustomers.getScene().getWindow());
+            dialog.initModality(Modality.APPLICATION_MODAL);
+            dialog.setTitle("Edit Customer Account");
+            dialog.setScene(new Scene(loader.load()));
+            dialog.setResizable(false);
+            var controller = (org.example.petshopdesktop.controllers.dialogcontrollers.StaffEditDialogController) loader.getController();
+            controller.setUser(selected);
+            dialog.showAndWait();
+            refresh();
+        } catch (Exception e) {
+            ActivityLogger.getInstance().logException("CustomerAccountsController.openEditDialog", e, "Opening customer edit dialog");
+            lblError.setText("Could not open customer account editor.");
+        }
+    }
+
+    private void refresh() {
+        lblError.setText("");
+        tvCustomers.setDisable(true);
+
+        new Thread(() -> {
+            try {
+                Comparator<UserResponse> byCreated = Comparator.comparing(
+                        UserResponse::getCreatedAt, Comparator.nullsLast(Comparator.reverseOrder()));
+
+                List<UserResponse> customers = CustomerApi.getInstance().listCustomers(null).stream()
+                        .sorted(byCreated)
+                        .collect(Collectors.toList());
+
+                Platform.runLater(() -> {
+                    customerAccounts.setAll(customers);
+                    tvCustomers.setDisable(false);
+                });
+            } catch (Exception e) {
+                ActivityLogger.getInstance().logException("CustomerAccountsController.refresh", e, "Loading customer accounts");
+                Platform.runLater(() -> {
+                    lblError.setText("Could not load customer accounts.");
+                    tvCustomers.setDisable(false);
+                });
+            }
+        }).start();
+    }
+
+    private void applyCustomerFilter(String text) {
+        String q = text == null ? "" : text.trim().toLowerCase();
+        if (q.isEmpty()) {
+            filteredCustomers.setPredicate(a -> true);
+            return;
+        }
+        filteredCustomers.setPredicate(a ->
+                safe(a.getUsername()).contains(q)
+                        || safe(a.getFullName()).contains(q)
+                        || safe(a.getEmail()).contains(q)
+                        || safe(a.getPhone()).contains(q)
+        );
+    }
+
+    private static String safe(String v) {
+        return v == null ? "" : v.toLowerCase();
+    }
+}

desktop/src/main/java/org/example/petshopdesktop/controllers/MainLayoutController.java

@@ -89,6 +89,9 @@ public class MainLayoutController {
     @FXML
     private Button btnStaffAccounts;
 
+    @FXML
+    private Button btnCustomers;
+
     @FXML
     private Button btnAnalytics;
 
@@ -179,6 +182,12 @@ public class MainLayoutController {
         updateButtons(btnStaffAccounts);
     }
 
+    @FXML
+    void btnCustomersClicked(ActionEvent event) {
+        loadView("customer-accounts-view.fxml");
+        updateButtons(btnCustomers);
+    }
+
     @FXML
     void btnAnalyticsClicked(ActionEvent event) {
         loadView("analytics-view.fxml");
@@ -415,8 +424,13 @@ public class MainLayoutController {
         btnPurchaseOrders.setManaged(isAdmin);
 
         if (btnStaffAccounts != null) {
-            btnStaffAccounts.setVisible(true);
+            btnStaffAccounts.setVisible(isAdmin);
-            btnStaffAccounts.setManaged(true);
+            btnStaffAccounts.setManaged(isAdmin);
+        }
+
+        if (btnCustomers != null) {
+            btnCustomers.setVisible(true);
+            btnCustomers.setManaged(true);
         }
 
         if (lblAdminSection != null) {
@@ -493,6 +507,7 @@ public class MainLayoutController {
             btnProducts,
             btnPurchaseOrders,
             btnStaffAccounts,
+            btnCustomers,
             btnAnalytics,
             btnActivityLogs,
             btnCoupons,

desktop/src/main/java/org/example/petshopdesktop/controllers/SaleController.java

@@ -255,6 +255,8 @@ public class SaleController {
         boolean isAdmin = UserSession.getInstance().isAdmin();
         vbCreateSale.setVisible(!isAdmin);
         vbCreateSale.setManaged(!isAdmin);
+        btnRefund.setVisible(!isAdmin);
+        btnRefund.setManaged(!isAdmin);
         lblModeNote.setText(isAdmin ? "(View only)" : "(Staff can create sales)");
     }
 

desktop/src/main/java/org/example/petshopdesktop/controllers/StaffAccountsController.java

@@ -8,26 +8,25 @@ import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Scene;
-import javafx.scene.control.Button;
+import javafx.scene.control.*;
-import javafx.scene.control.Label;
+import javafx.scene.layout.VBox;
-import javafx.scene.control.TableColumn;
-import javafx.scene.control.TableView;
-import javafx.scene.control.TextField;
 import javafx.stage.Modality;
 import javafx.stage.Stage;
 import org.example.petshopdesktop.api.dto.user.UserResponse;
 import org.example.petshopdesktop.api.endpoints.UserApi;
-import org.example.petshopdesktop.api.endpoints.CustomerApi;
 import org.example.petshopdesktop.auth.UserSession;
 import org.example.petshopdesktop.util.ActivityLogger;
 import org.example.petshopdesktop.util.TableViewSupport;
 
-import java.util.List;
 import java.util.Comparator;
+import java.util.List;
 import java.util.stream.Collectors;
 
 public class StaffAccountsController {
 
+    @FXML
+    private VBox staffSection;
+
     @FXML
     private TableView<UserResponse> tvStaff;
 
@@ -55,12 +54,6 @@ public class StaffAccountsController {
     @FXML
     private TextField txtSearch;
 
-    @FXML
-    private Label lblError;
-
-    @FXML
-    private Label lblStatus;
-
     @FXML
     private Button btnRefresh;
 
@@ -70,8 +63,14 @@ public class StaffAccountsController {
     @FXML
     private Button btnEditAccount;
 
+    @FXML
+    private Label lblError;
+
+    @FXML
+    private Label lblStatus;
+
     private final ObservableList<UserResponse> staffAccounts = FXCollections.observableArrayList();
-    private FilteredList<UserResponse> filtered;
+    private FilteredList<UserResponse> filteredStaff;
 
     @FXML
     public void initialize() {
@@ -83,21 +82,15 @@ public class StaffAccountsController {
         colStatus.setCellValueFactory(data -> new javafx.beans.property.SimpleStringProperty(data.getValue().getActive() != null && data.getValue().getActive() ? "Active" : "Inactive"));
         colCreated.setCellValueFactory(data -> new javafx.beans.property.SimpleObjectProperty<>(data.getValue().getCreatedAt()));
 
-        filtered = new FilteredList<>(staffAccounts, a -> true);
+        filteredStaff = new FilteredList<>(staffAccounts, a -> true);
-        TableViewSupport.bindSortedItems(tvStaff, filtered);
+        TableViewSupport.bindSortedItems(tvStaff, filteredStaff);
         TableViewSupport.installDoubleClickAction(tvStaff, this::openEditDialog);
 
-        txtSearch.textProperty().addListener((obs, o, n) -> applyFilter(n));
+        tvStaff.getSelectionModel().selectedItemProperty().addListener((obs, oldVal, newVal) ->
+                btnEditAccount.setDisable(newVal == null));
+        btnEditAccount.setDisable(true);
 
-        tvStaff.getSelectionModel().selectedItemProperty().addListener((obs, oldValue, newValue) -> {
+        txtSearch.textProperty().addListener((obs, o, n) -> applyStaffFilter(n));
-            if (btnEditAccount != null) {
-                btnEditAccount.setDisable(newValue == null);
-            }
-        });
-
-        if (btnEditAccount != null) {
-            btnEditAccount.setDisable(true);
-        }
 
         refresh();
     }
@@ -132,8 +125,7 @@ public class StaffAccountsController {
     @FXML
     void btnEditAccountClicked(ActionEvent event) {
         lblError.setText("");
-        UserResponse selected = tvStaff.getSelectionModel().getSelectedItem();
+        openEditDialog(tvStaff.getSelectionModel().getSelectedItem());
-        openEditDialog(selected);
     }
 
     private void openEditDialog(UserResponse selected) {
@@ -156,7 +148,7 @@ public class StaffAccountsController {
             Stage dialog = new Stage();
             dialog.initOwner(tvStaff.getScene().getWindow());
             dialog.initModality(Modality.APPLICATION_MODAL);
-            dialog.setTitle("Edit User Account");
+            dialog.setTitle("Edit Staff Account");
             dialog.setScene(new Scene(loader.load()));
             dialog.setResizable(false);
             var controller = (org.example.petshopdesktop.controllers.dialogcontrollers.StaffEditDialogController) loader.getController();
@@ -164,7 +156,7 @@ public class StaffAccountsController {
             dialog.showAndWait();
             refresh();
         } catch (Exception e) {
-            ActivityLogger.getInstance().logException("StaffAccountsController.btnEditAccountClicked", e, "Opening user edit dialog");
+            ActivityLogger.getInstance().logException("StaffAccountsController.openEditDialog", e, "Opening user edit dialog");
             lblError.setText("Could not open user account editor.");
         }
     }
@@ -175,48 +167,40 @@ public class StaffAccountsController {
 
         new Thread(() -> {
             try {
-                UserSession session = UserSession.getInstance();
+                Comparator<UserResponse> byCreated = Comparator.comparing(
-                List<UserResponse> users;
+                        UserResponse::getCreatedAt, Comparator.nullsLast(Comparator.reverseOrder()));
-                if (session.isAdmin()) {
-                    users = UserApi.getInstance().listUsers(null);
-                } else {
-                    users = CustomerApi.getInstance().listCustomers(null);
-                }
 
-                List<UserResponse> sortedUsers = users.stream()
+                List<UserResponse> staff = UserApi.getInstance().listUsers(null).stream()
-                    .sorted(Comparator.comparing(UserResponse::getCreatedAt, Comparator.nullsLast(Comparator.reverseOrder())))
+                        .filter(u -> !"CUSTOMER".equalsIgnoreCase(u.getRole()))
-                    .collect(Collectors.toList());
+                        .sorted(byCreated)
+                        .collect(Collectors.toList());
 
                 Platform.runLater(() -> {
-                    staffAccounts.setAll(sortedUsers);
+                    staffAccounts.setAll(staff);
                     tvStaff.setDisable(false);
                 });
             } catch (Exception e) {
-                ActivityLogger.getInstance().logException("StaffAccountsController.refresh", e, "Loading user accounts");
+                ActivityLogger.getInstance().logException("StaffAccountsController.refresh", e, "Loading staff accounts");
                 Platform.runLater(() -> {
-                    String message = e.getMessage();
+                    lblError.setText("Could not load staff accounts.");
-                    lblError.setText(message == null || message.isBlank()
-                        ? "Could not load user accounts."
-                        : "Could not load user accounts: " + message);
                     tvStaff.setDisable(false);
                 });
             }
         }).start();
     }
 
-    private void applyFilter(String text) {
+    private void applyStaffFilter(String text) {
         String q = text == null ? "" : text.trim().toLowerCase();
         if (q.isEmpty()) {
-            filtered.setPredicate(a -> true);
+            filteredStaff.setPredicate(a -> true);
             return;
         }
-
+        filteredStaff.setPredicate(a ->
-        filtered.setPredicate(a ->
+                safe(a.getUsername()).contains(q)
-            safe(a.getUsername()).contains(q)
+                        || safe(a.getFullName()).contains(q)
-                || safe(a.getFullName()).contains(q)
+                        || safe(a.getEmail()).contains(q)
-                || safe(a.getEmail()).contains(q)
+                        || safe(a.getPhone()).contains(q)
-                || safe(a.getPhone()).contains(q)
+                        || safe(a.getRole()).contains(q)
-                || safe(a.getRole()).contains(q)
         );
     }
 

desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/AdoptionDialogController.java

@@ -62,7 +62,7 @@ public class AdoptionDialogController {
     private boolean suppressPaymentDialog = false;
 
     private ObservableList<String> statusList = FXCollections.observableArrayList(
-            "Pending", "Completed", "Cancelled"
+            "Pending", "Completed", "Missed", "Cancelled"
     );
 
     @FXML
@@ -282,6 +282,7 @@ public class AdoptionDialogController {
             }
 
             suppressPaymentDialog = true;
+            cbAdoptionStatus.setItems(statusList);
             for (String status : cbAdoptionStatus.getItems()) {
                 if (status.equals(adoption.getAdoptionStatus())) {
                     cbAdoptionStatus.getSelectionModel().select(status);
@@ -289,13 +290,57 @@ public class AdoptionDialogController {
                 }
             }
             suppressPaymentDialog = false;
+            applyEditModeLock();
         }
     }
 
+    private void applyEditModeLock() {
+        String status = cbAdoptionStatus.getValue();
+
+        if ("Cancelled".equalsIgnoreCase(status)) {
+            cbPet.setDisable(true);
+            cbCustomer.setDisable(true);
+            cbEmployee.setDisable(true);
+            dpAdoptionDate.setDisable(true);
+            cbAdoptionStatus.setDisable(true);
+            cbAdoptionStatus.setItems(FXCollections.observableArrayList("Cancelled"));
+            btnSave.setDisable(true);
+            return;
+        }
+
+        LocalDate adoptionDate = dpAdoptionDate.getValue();
+        boolean isPast = adoptionDate != null && adoptionDate.isBefore(LocalDate.now());
+
+        cbPet.setDisable(true);
+        cbCustomer.setDisable(true);
+        dpAdoptionDate.setDisable(false);
+        cbEmployee.setDisable(false);
+        cbAdoptionStatus.setDisable(false);
+
+        suppressPaymentDialog = true;
+        if (isPast) {
+            cbAdoptionStatus.setItems(FXCollections.observableArrayList("Completed", "Missed"));
+            dpAdoptionDate.setDisable(true);
+        } else {
+            cbAdoptionStatus.setItems(FXCollections.observableArrayList("Pending", "Cancelled"));
+        }
+        if (!cbAdoptionStatus.getItems().contains(cbAdoptionStatus.getValue())) {
+            cbAdoptionStatus.getSelectionModel().selectFirst();
+        }
+        suppressPaymentDialog = false;
+    }
+
     public void setMode(String mode) {
         this.mode = mode;
         lblMode.setText(mode + " Adoption");
         lblAdoptionId.setVisible(mode.equals("Edit"));
+        if (mode.equals("Add")) {
+            suppressPaymentDialog = true;
+            cbAdoptionStatus.setItems(FXCollections.observableArrayList("Pending"));
+            cbAdoptionStatus.setValue("Pending");
+            cbAdoptionStatus.setDisable(true);
+            suppressPaymentDialog = false;
+        }
     }
 
     private void applySelectedPet() {

desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/AppointmentDialogController.java

@@ -43,24 +43,26 @@ public class AppointmentDialogController {
     @FXML private Label lblAppointmentId;
     @FXML private Label lblMode;
 
-    private String mode = null;  
+    private String mode = null;
     private AppointmentDTO selectedAppointment = null;
     private Long pendingPetSelectionId = null;
-
+    private boolean isOriginallyCancel = false;
-    private ObservableList<String> statusList =
+    private boolean isOriginallyCompletedOrMissed = false;
-            FXCollections.observableArrayList(
-                    "Booked", "Completed", "Missed", "Cancelled"
-            );
 
     public void setMode(String mode) {
         this.mode = mode;
         lblMode.setText(mode + " Appointment");
         lblAppointmentId.setVisible(!mode.equals("Add"));
+        if (mode.equals("Add")) {
+            cbAppointmentStatus.setItems(FXCollections.observableArrayList("Booked"));
+            cbAppointmentStatus.setValue("Booked");
+            cbAppointmentStatus.setDisable(true);
+        }
     }
 
     @FXML
     public void initialize() {
-        cbAppointmentStatus.setItems(statusList);
+        cbAppointmentStatus.setItems(FXCollections.observableArrayList("Booked", "Completed", "Missed", "Cancelled"));
         cbPet.setDisable(true);
         cbEmployee.setPromptText("Select an employee");
         cbPet.setPromptText("Select a customer first");
@@ -228,6 +230,46 @@ public class AppointmentDialogController {
         applySelectedService();
         applySelectedCustomer();
         applySelectedEmployee();
+        applyEditModeLock();
+    }
+
+    private void applyEditModeLock() {
+        String status = cbAppointmentStatus.getValue();
+        isOriginallyCancel = "Cancelled".equalsIgnoreCase(status);
+        isOriginallyCompletedOrMissed = "Completed".equalsIgnoreCase(status) || "Missed".equalsIgnoreCase(status);
+
+        if (isOriginallyCancel) {
+            cbService.setDisable(true);
+            cbCustomer.setDisable(true);
+            cbPet.setDisable(true);
+            cbEmployee.setDisable(true);
+            cbHour.setDisable(true);
+            cbMinute.setDisable(true);
+            dpAppointmentDate.setDisable(true);
+            cbAppointmentStatus.setDisable(true);
+            cbAppointmentStatus.setItems(FXCollections.observableArrayList("Cancelled"));
+            btnSave.setDisable(true);
+        } else if (isOriginallyCompletedOrMissed) {
+            cbService.setDisable(true);
+            cbCustomer.setDisable(true);
+            cbPet.setDisable(true);
+            cbEmployee.setDisable(true);
+            cbHour.setDisable(true);
+            cbMinute.setDisable(true);
+            dpAppointmentDate.setDisable(true);
+            cbAppointmentStatus.setDisable(false);
+            cbAppointmentStatus.setItems(FXCollections.observableArrayList("Completed", "Missed"));
+        } else {
+            cbService.setDisable(true);
+            cbCustomer.setDisable(true);
+            cbPet.setDisable(true);
+            cbEmployee.setDisable(false);
+            cbHour.setDisable(false);
+            cbMinute.setDisable(false);
+            dpAppointmentDate.setDisable(false);
+            cbAppointmentStatus.setDisable(false);
+            cbAppointmentStatus.setItems(FXCollections.observableArrayList("Booked", "Cancelled"));
+        }
     }
 
     private void buttonSaveClicked(MouseEvent e) {

desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/InventoryDialogController.java

@@ -121,7 +121,7 @@ public class InventoryDialogController {
         //Validate inputs
         errorMsg += Validator.isPresent(txtQuantity.getText(), "Quantity");
         errorMsg += Validator.isLessThanVarChars(txtQuantity.getText(), "Quantity", 11);
-        errorMsg += Validator.isNonNegativeInteger(txtQuantity.getText(), "Quantity");
+        errorMsg += Validator.isPositiveInteger(txtQuantity.getText(), "Quantity");
 
         //Operation only occurs if there are no errors
         if (errorMsg.isEmpty()) {

desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/PetDialogController.java

@@ -28,65 +28,34 @@ import java.math.BigDecimal;
 import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
+import java.util.stream.Collectors;
 
 public class PetDialogController {
 
-    @FXML
+    private static final String STATUS_AVAILABLE = "Available";
-    private Button btnCancel;
+    private static final String STATUS_ADOPTED = "Adopted";
+    private static final String STATUS_OWNED = "Owned";
+    private static final String STATUS_PENDING = "Pending";
 
-    @FXML
+    @FXML private Button btnCancel;
-    private Button btnSave;
+    @FXML private Button btnSave;
-
+    @FXML private Button btnChangeImage;
-    @FXML
+    @FXML private Button btnRemoveImage;
-    private Button btnChangeImage;
+    @FXML private ComboBox<String> cbPetStatus;
-
+    @FXML private ComboBox<String> cbPetSpecies;
-    @FXML
+    @FXML private ComboBox<String> cbPetBreed;
-    private Button btnRemoveImage;
+    @FXML private ComboBox<DropdownOption> cbCustomer;
-
+    @FXML private ComboBox<DropdownOption> cbStore;
-    @FXML
+    @FXML private VBox vbCustomerField;
-    private ComboBox<String> cbPetStatus;
+    @FXML private VBox vbStoreField;
-
+    @FXML private VBox vbPriceField;
-    @FXML
+    @FXML private Label lblMode;
-    private ComboBox<DropdownOption> cbCustomer;
+    @FXML private Label lblPetId;
-
+    @FXML private Label lblImageStatus;
-    @FXML
+    @FXML private ImageView imgPetPreview;
-    private ComboBox<DropdownOption> cbStore;
+    @FXML private TextField txtPetAge;
-
+    @FXML private TextField txtPetName;
-    @FXML
+    @FXML private TextField txtPetPrice;
-    private VBox vbCustomerField;
-
-    @FXML
-    private VBox vbStoreField;
-
-    @FXML
-    private VBox vbPriceField;
-
-    @FXML
-    private Label lblMode;
-
-    @FXML
-    private Label lblPetId;
-
-    @FXML
-    private Label lblImageStatus;
-
-    @FXML
-    private ImageView imgPetPreview;
-
-    @FXML
-    private TextField txtPetAge;
-
-    @FXML
-    private TextField txtPetBreed;
-
-    @FXML
-    private TextField txtPetName;
-
-    @FXML
-    private TextField txtPetPrice;
-
-    @FXML
-    private ComboBox<String> cbPetSpecies;
 
     private String mode = null;
     private File selectedImageFile;
@@ -96,15 +65,17 @@ public class PetDialogController {
     private Long pendingCustomerId = null;
     private Long pendingStoreId = null;
     private Long originalCustomerId = null;
+    private boolean isOriginallyOwnedOrAdopted = false;
+    private String pendingBreedValue = null;
 
-    private ObservableList<String> statusList =  FXCollections.observableArrayList(
+    private final ObservableList<String> statusList = FXCollections.observableArrayList(
-            "Available", "Adopted", "Owned", "Pending"
+            STATUS_AVAILABLE, STATUS_ADOPTED, STATUS_OWNED, STATUS_PENDING
     );
 
     @FXML
     void initialize() {
-
         cbPetStatus.setItems(statusList);
+        cbPetBreed.setDisable(true);
 
         cbCustomer.setCellFactory(param -> new ListCell<>() {
             @Override protected void updateItem(DropdownOption o, boolean empty) {
@@ -132,14 +103,26 @@ public class PetDialogController {
             }
         });
 
-        setFieldVisibility(vbCustomerField, false);
+        applyStatusRules(STATUS_AVAILABLE, false);
-        setFieldVisibility(vbStoreField, false);
-        setFieldVisibility(vbPriceField, true);
 
         loadSpecies();
+        loadCustomers();
+        loadStores();
+
+        cbPetSpecies.valueProperty().addListener((obs, oldVal, newVal) -> {
+            if (newVal != null && !newVal.isBlank()) {
+                if (!cbPetSpecies.isDisabled()) cbPetBreed.setDisable(false);
+                loadBreeds(newVal);
+            } else {
+                cbPetBreed.setItems(FXCollections.observableArrayList());
+                cbPetBreed.setValue(null);
+                cbPetBreed.setPromptText("Select Species first");
+                if (!cbPetSpecies.isDisabled()) cbPetBreed.setDisable(true);
+            }
+        });
 
         cbPetStatus.valueProperty().addListener((obs, oldVal, newVal) -> {
-            updateStatusFieldVisibility(newVal);
+            if (newVal != null) applyStatusRules(newVal, true);
         });
 
         btnSave.setOnMouseClicked(new EventHandler<MouseEvent>() {
@@ -159,52 +142,81 @@ public class PetDialogController {
         btnChangeImage.setOnMouseClicked(mouseEvent -> handleChangeImage());
         btnRemoveImage.setOnMouseClicked(mouseEvent -> handleRemoveImage());
         refreshImagePreview();
+    }
 
-        loadCustomers();
+    private void loadBreeds(String species) {
-        loadStores();
+        cbPetBreed.setPromptText("Loading breeds...");
+        new Thread(() -> {
+            try {
+                List<DropdownOption> options = DropdownApi.getInstance().getPetBreeds(species);
+                List<String> breeds = options.stream().map(DropdownOption::getLabel).collect(Collectors.toList());
+                Platform.runLater(() -> {
+                    cbPetBreed.setItems(FXCollections.observableArrayList(breeds));
+                    cbPetBreed.setPromptText("Select Breed");
+                    if (pendingBreedValue != null) {
+                        cbPetBreed.setValue(pendingBreedValue);
+                        pendingBreedValue = null;
+                    }
+                });
+            } catch (Exception e) {
+                Platform.runLater(() -> {
+                    ActivityLogger.getInstance().logException("PetDialogController.loadBreeds", e, "Loading breeds for species: " + species);
+                    cbPetBreed.setPromptText("Unable to load breeds");
+                });
+            }
+        }).start();
+    }
+
+    private void applyStatusRules(String status, boolean clearInvalidSelections) {
+        if (STATUS_AVAILABLE.equalsIgnoreCase(status)) {
+            vbCustomerField.setDisable(true);
+            vbStoreField.setDisable(false);
+            if (clearInvalidSelections) cbCustomer.setValue(null);
+            return;
+        }
+        if (STATUS_OWNED.equalsIgnoreCase(status)) {
+            vbCustomerField.setDisable(false);
+            vbStoreField.setDisable(true);
+            if (clearInvalidSelections) cbStore.setValue(null);
+            return;
+        }
+        vbCustomerField.setDisable(false);
+        vbStoreField.setDisable(false);
     }
 
     private void buttonSaveClicked(MouseEvent mouseEvent) {
         String errorMsg = "";
 
-        //Check validation (input required)
         errorMsg += Validator.isPresent(txtPetName.getText(), "Pet Name");
         errorMsg += Validator.isPresent(txtPetAge.getText(), "Age");
-        errorMsg += Validator.isPresent(txtPetBreed.getText(), "Breed");
         String speciesValue = cbPetSpecies.getValue() != null ? cbPetSpecies.getValue().trim() : "";
         if (speciesValue.isEmpty()) errorMsg += "Species is required\n";
+        String breedValue = cbPetBreed.getValue() != null ? cbPetBreed.getValue().trim() : "";
+        if (breedValue.isEmpty()) errorMsg += "Breed is required\n";
+        if (cbPetStatus.getSelectionModel().getSelectedItem() == null) errorMsg += "Status is required\n";
+        errorMsg += Validator.isPresent(txtPetPrice.getText(), "Price");
+
         String selectedStatus = cbPetStatus.getValue();
-        boolean needsPrice = !("Owned".equalsIgnoreCase(selectedStatus) || "Adopted".equalsIgnoreCase(selectedStatus));
+        if (STATUS_AVAILABLE.equalsIgnoreCase(selectedStatus) && cbStore.getValue() == null) {
-        if (needsPrice) {
+            errorMsg += "Store is required for Available status\n";
-            errorMsg += Validator.isPresent(txtPetPrice.getText(), "Price");
         }
-        if (cbPetStatus.getSelectionModel().getSelectedItem() == null){
+        if (STATUS_OWNED.equalsIgnoreCase(selectedStatus) && cbCustomer.getValue() == null) {
-            errorMsg += "Status is required";
-        }
-        if ("Owned".equalsIgnoreCase(selectedStatus) && cbCustomer.getValue() == null && UserSession.getInstance().isAdmin()) {
             errorMsg += "Customer is required for Owned status\n";
         }
-        boolean storeRequired = requiresStore(selectedStatus) && !"Adopted".equalsIgnoreCase(selectedStatus);
+        if (STATUS_ADOPTED.equalsIgnoreCase(selectedStatus)) {
-        if (storeRequired && cbStore.getValue() == null) {
+            if (cbCustomer.getValue() == null) errorMsg += "Customer is required for Adopted status\n";
-            errorMsg += "Store is required for " + selectedStatus + " status\n";
+            if (cbStore.getValue() == null) errorMsg += "Store is required for Adopted status\n";
         }
 
-        //Check validation (length size)
         errorMsg += Validator.isLessThanVarChars(txtPetName.getText(), "Pet Name", 50);
         errorMsg += Validator.isLessThanVarChars(speciesValue, "Species", 50);
-        errorMsg += Validator.isLessThanVarChars(txtPetBreed.getText(), "Breed", 50);
+        errorMsg += Validator.isLessThanVarChars(breedValue, "Breed", 50);
-        if (needsPrice) {
+        errorMsg += Validator.isLessThanVarChars(txtPetPrice.getText(), "Price", 12);
-            errorMsg += Validator.isLessThanVarChars(txtPetPrice.getText(), "Price", 12);
-        }
         errorMsg += Validator.isLessThanVarChars(txtPetAge.getText(), "Age", 11);
-
+        errorMsg += Validator.isNonNegativeDouble(txtPetPrice.getText(), "Price");
-        //Check validation (format)
-        if (needsPrice) {
-            errorMsg += Validator.isNonNegativeDouble(txtPetPrice.getText(), "Price");
-        }
         errorMsg += Validator.isPositiveInteger(txtPetAge.getText(), "Age");
 
-        if(errorMsg.isEmpty()){
+        if (errorMsg.isEmpty()) {
             if ("Edit".equals(mode) && UserSession.getInstance().isAdmin()) {
                 Long newCustomerId = cbCustomer.getValue() != null ? cbCustomer.getValue().getId() : null;
                 if (!Objects.equals(originalCustomerId, newCustomerId)) {
@@ -212,44 +224,34 @@ public class PetDialogController {
                     confirm.setHeaderText("Confirm Owner Change");
                     confirm.setContentText("Are you sure you want to reassign this pet to a different owner?");
                     Optional<ButtonType> result = confirm.showAndWait();
-                    if (result.isEmpty() || result.get() != ButtonType.OK) {
+                    if (result.isEmpty() || result.get() != ButtonType.OK) return;
-                        return;
-                    }
                 }
             }
             PetRequest request = buildPetRequest();
             try {
-                if(mode.equals("Add")) {
+                if (mode.equals("Add")) {
                     PetResponse response = PetApi.getInstance().createPet(request);
                     applyImageChanges(response.getPetId());
                 } else {
                     String[] parts = lblPetId.getText().split(": ");
-                    if (parts.length < 2) {
+                    if (parts.length < 2) throw new IllegalStateException("Invalid pet ID format");
-                        throw new IllegalStateException("Invalid pet ID format");
-                    }
                     Long petId = Long.parseLong(parts[1]);
                     PetApi.getInstance().updatePet(petId, request);
                     applyImageChanges(petId);
                 }
-
-                //tell the user operation was successful
                 Alert alert = new Alert(Alert.AlertType.INFORMATION);
                 alert.setHeaderText("Saved");
                 alert.setContentText(mode + " succeeded");
                 alert.showAndWait();
                 closeStage(mouseEvent);
             } catch (Exception e) {
-                ActivityLogger.getInstance().logException(
+                ActivityLogger.getInstance().logException("PetDialogController.buttonSaveClicked", e, mode + " pet record");
-                    "PetDialogController.buttonSaveClicked",
-                    e,
-                    mode + " pet record");
                 Alert alert = new Alert(Alert.AlertType.ERROR);
                 alert.setHeaderText("Operation Error");
                 alert.setContentText(mode + " failed: " + e.getMessage());
                 alert.showAndWait();
             }
-        }
+        } else {
-        else{
             Alert alert = new Alert(Alert.AlertType.ERROR);
             alert.setHeaderText("Input Error");
             alert.setContentText(errorMsg);
@@ -261,11 +263,10 @@ public class PetDialogController {
         PetRequest request = new PetRequest();
         request.setPetName(txtPetName.getText());
         request.setPetSpecies(cbPetSpecies.getValue() != null ? cbPetSpecies.getValue().trim() : "");
-        request.setPetBreed(txtPetBreed.getText());
+        request.setPetBreed(cbPetBreed.getValue() != null ? cbPetBreed.getValue().trim() : "");
         request.setPetStatus(cbPetStatus.getValue());
-        String buildStatus = cbPetStatus.getValue();
+
-        boolean buildNeedsPrice = !("Owned".equalsIgnoreCase(buildStatus) || "Adopted".equalsIgnoreCase(buildStatus));
+        if (txtPetPrice.getText() != null && !txtPetPrice.getText().isBlank()) {
-        if (buildNeedsPrice && txtPetPrice.getText() != null && !txtPetPrice.getText().isBlank()) {
             try {
                 request.setPetPrice(new BigDecimal(txtPetPrice.getText()));
             } catch (NumberFormatException e) {
@@ -273,21 +274,14 @@ public class PetDialogController {
             }
         }
 
-        int age;
         try {
-            age = Integer.parseInt(txtPetAge.getText());
+            request.setPetAge(Integer.parseInt(txtPetAge.getText()));
         } catch (NumberFormatException e) {
             throw new IllegalArgumentException("Invalid age format");
         }
-        request.setPetAge(age);
 
-        String status = cbPetStatus.getValue();
+        if (cbCustomer.getValue() != null) request.setCustomerId(cbCustomer.getValue().getId());
-        if (("Owned".equalsIgnoreCase(status) || "Adopted".equalsIgnoreCase(status)) && cbCustomer.getValue() != null) {
+        if (cbStore.getValue() != null) request.setStoreId(cbStore.getValue().getId());
-            request.setCustomerId(cbCustomer.getValue().getId());
-        }
-        if (requiresStore(status) && cbStore.getValue() != null) {
-            request.setStoreId(cbStore.getValue().getId());
-        }
 
         return request;
     }
@@ -296,15 +290,11 @@ public class PetDialogController {
         new Thread(() -> {
             try {
                 List<DropdownOption> options = DropdownApi.getInstance().getPetSpecies();
-                List<String> species = options.stream()
+                List<String> species = options.stream().map(DropdownOption::getLabel).collect(Collectors.toList());
-                        .map(DropdownOption::getLabel)
-                        .collect(java.util.stream.Collectors.toList());
                 Platform.runLater(() -> {
                     String current = cbPetSpecies.getValue();
                     cbPetSpecies.setItems(FXCollections.observableArrayList(species));
-                    if (current != null && !current.isBlank()) {
+                    if (current != null && !current.isBlank()) cbPetSpecies.setValue(current);
-                        cbPetSpecies.setValue(current);
-                    }
                 });
             } catch (Exception e) {
                 Platform.runLater(() -> ActivityLogger.getInstance().logException(
@@ -323,8 +313,7 @@ public class PetDialogController {
                 });
             } catch (Exception e) {
                 Platform.runLater(() -> {
-                    ActivityLogger.getInstance().logException(
+                    ActivityLogger.getInstance().logException("PetDialogController.loadCustomers", e, "Loading customers");
-                        "PetDialogController.loadCustomers", e, "Loading customers");
                     cbCustomer.setDisable(true);
                     cbCustomer.setPromptText("Unable to load customers");
                 });
@@ -342,8 +331,7 @@ public class PetDialogController {
                 });
             } catch (Exception e) {
                 Platform.runLater(() -> {
-                    ActivityLogger.getInstance().logException(
+                    ActivityLogger.getInstance().logException("PetDialogController.loadStores", e, "Loading stores");
-                        "PetDialogController.loadStores", e, "Loading stores");
                     cbStore.setDisable(true);
                     cbStore.setPromptText("Unable to load stores");
                 });
@@ -383,55 +371,78 @@ public class PetDialogController {
         stage.close();
     }
 
-    public void displayPetDetails(Pet pet){
+    public void displayPetDetails(Pet pet) {
-        if (pet!=null){
+        if (pet == null) return;
-            lblPetId.setText("ID: " + pet.getPetId());
-            txtPetName.setText(pet.getPetName());
-            cbPetSpecies.setValue(pet.getPetSpecies());
-            txtPetBreed.setText(pet.getPetBreed());
-            txtPetAge.setText(pet.getPetAge() + "");
-            txtPetPrice.setText(pet.getPetPrice() + "");
-            currentImageUrl = pet.getImageUrl();
-            selectedImageFile = null;
-            removeImageRequested = false;
-            refreshImagePreview();
 
-            pendingCustomerId = pet.getCustomerId() > 0 ? pet.getCustomerId() : null;
+        lblPetId.setText("ID: " + pet.getPetId());
-            originalCustomerId = pendingCustomerId;
+        txtPetName.setText(pet.getPetName());
-            pendingStoreId = pet.getStoreId() > 0 ? pet.getStoreId() : null;
+        txtPetAge.setText(String.valueOf(pet.getPetAge()));
+        txtPetPrice.setText(String.valueOf(pet.getPetPrice()));
+        currentImageUrl = pet.getImageUrl();
+        selectedImageFile = null;
+        removeImageRequested = false;
+        refreshImagePreview();
 
-            for (String status : cbPetStatus.getItems()) {
+        pendingCustomerId = pet.getCustomerId() > 0 ? pet.getCustomerId() : null;
-                if(status.equals(pet.getPetStatus())){
+        originalCustomerId = pendingCustomerId;
-                    cbPetStatus.getSelectionModel().select(status);
+        pendingStoreId = pet.getStoreId() > 0 ? pet.getStoreId() : null;
-                    break;
+
-                }
+        isOriginallyOwnedOrAdopted = STATUS_OWNED.equalsIgnoreCase(pet.getPetStatus())
+                || STATUS_ADOPTED.equalsIgnoreCase(pet.getPetStatus());
+
+        pendingBreedValue = pet.getPetBreed();
+        cbPetSpecies.setValue(pet.getPetSpecies());
+
+        for (String status : cbPetStatus.getItems()) {
+            if (status.equals(pet.getPetStatus())) {
+                cbPetStatus.getSelectionModel().select(status);
+                break;
             }
-            updateStatusFieldVisibility(cbPetStatus.getValue());
+        }
+
+        applyStatusRules(cbPetStatus.getValue(), false);
+        applyEditModeLock();
+    }
+
+    private void applyEditModeLock() {
+        cbPetSpecies.setDisable(true);
+        cbPetBreed.setDisable(true);
+
+        boolean isStaff = !UserSession.getInstance().isAdmin();
+        if (isStaff && isOriginallyOwnedOrAdopted) {
+            cbPetStatus.setDisable(true);
+            vbCustomerField.setDisable(true);
+            vbStoreField.setDisable(true);
         }
     }
 
     public void setMode(String mode) {
         this.mode = mode;
         lblMode.setText(mode + " Pet");
-        if(mode.equals("Add")) {
+
+        if (mode.equals("Add")) {
             lblPetId.setVisible(false);
             currentImageUrl = null;
             selectedImageFile = null;
             removeImageRequested = false;
+            cbPetSpecies.setDisable(false);
+            cbPetBreed.setDisable(true);
+            cbPetBreed.setItems(FXCollections.observableArrayList());
+            cbPetBreed.setValue(null);
+            cbPetBreed.setPromptText("Select Species first");
+            cbPetStatus.setDisable(false);
+            cbPetStatus.getSelectionModel().select(STATUS_AVAILABLE);
+            applyStatusRules(STATUS_AVAILABLE, false);
             refreshImagePreview();
-        }
+        } else if (mode.equals("Edit")) {
-        else if(mode.equals("Edit")) {
             lblPetId.setVisible(true);
             refreshImagePreview();
         }
-        updateStatusFieldVisibility(cbPetStatus.getValue());
     }
 
     private void handleChangeImage() {
         File file = FilePickerSupport.pickImageFile(btnSave.getScene().getWindow());
-        if (file == null) {
+        if (file == null) return;
-            return;
-        }
         selectedImageFile = file;
         removeImageRequested = false;
         lblImageStatus.setText("Selected: " + file.getName());
@@ -468,9 +479,7 @@ public class PetDialogController {
     }
 
     private void refreshImagePreview() {
-        if (imgPetPreview == null || lblImageStatus == null || btnRemoveImage == null) {
+        if (imgPetPreview == null || lblImageStatus == null || btnRemoveImage == null) return;
-            return;
-        }
         imgPetPreview.setImage(null);
         if (selectedImageFile != null) {
             lblImageStatus.setText("Selected: " + selectedImageFile.getName());
@@ -487,30 +496,4 @@ public class PetDialogController {
         lblImageStatus.setText("No image selected");
         btnRemoveImage.setDisable(true);
     }
-
-    private void updateStatusFieldVisibility(String status) {
-        boolean statusNeedsCustomer = "Owned".equalsIgnoreCase(status) || "Adopted".equalsIgnoreCase(status);
-        boolean needsCustomer = statusNeedsCustomer && UserSession.getInstance().isAdmin();
-        boolean storeBased = requiresStore(status);
-        boolean needsPrice = !statusNeedsCustomer;
-        setFieldVisibility(vbCustomerField, needsCustomer);
-        setFieldVisibility(vbStoreField, storeBased);
-        setFieldVisibility(vbPriceField, needsPrice);
-    }
-
-    private boolean requiresStore(String status) {
-        return "Available".equalsIgnoreCase(status)
-            || "Pending".equalsIgnoreCase(status)
-            || "Unadopted".equalsIgnoreCase(status)
-            || "Adopted".equalsIgnoreCase(status);
-    }
-
-    private void setFieldVisibility(VBox field, boolean visible) {
-        if (field == null) {
-            return;
-        }
-        field.setVisible(visible);
-        field.setManaged(visible);
-    }
-
 }

desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/SaleDetailDialogController.java

@@ -13,6 +13,7 @@ import javafx.fxml.FXMLLoader;
 import javafx.scene.Scene;
 import javafx.stage.Modality;
 import org.example.petshopdesktop.util.ActivityLogger;
+import org.example.petshopdesktop.auth.UserSession;
 
 import java.util.function.Consumer;
 
@@ -46,6 +47,12 @@ public class SaleDetailDialogController {
         colQuantity.setCellValueFactory(new PropertyValueFactory<>("quantity"));
         colUnitPrice.setCellValueFactory(new PropertyValueFactory<>("unitPrice"));
         colLineTotal.setCellValueFactory(new PropertyValueFactory<>("total"));
+
+        if (btnRefund != null) {
+            boolean isAdmin = UserSession.getInstance().isAdmin();
+            btnRefund.setVisible(!isAdmin);
+            btnRefund.setManaged(!isAdmin);
+        }
     }
 
     public void displaySaleDetails(SaleDetail sale) {
@@ -57,7 +64,10 @@ public class SaleDetailDialogController {
         lblTotal.setText(currency.format(sale.getTotalAmount()));
         tvItems.setItems(sale.getItems());
         if (btnRefund != null) {
-            btnRefund.setDisable(sale.isRefund());
+            boolean isAdmin = UserSession.getInstance().isAdmin();
+            if (!isAdmin) {
+                btnRefund.setDisable(sale.isRefund());
+            }
         }
     }
 

desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/StaffEditDialogController.java

@@ -15,6 +15,7 @@ import org.example.petshopdesktop.api.endpoints.UserApi;
 import org.example.petshopdesktop.api.endpoints.CustomerApi;
 import org.example.petshopdesktop.auth.UserSession;
 import org.example.petshopdesktop.util.ActivityLogger;
+import org.example.petshopdesktop.util.TextFieldFormatSupport;
 
 public class StaffEditDialogController {
 
@@ -47,6 +48,11 @@ public class StaffEditDialogController {
 
     private UserResponse user;
 
+    @FXML
+    void initialize() {
+        TextFieldFormatSupport.applyPhoneNumberFormat(txtPhone);
+    }
+
     public void setUser(UserResponse user) {
         this.user = user;
         String fullName = user.getFullName() == null ? "" : user.getFullName();

desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/StaffRegisterDialogController.java

@@ -15,6 +15,7 @@ import org.example.petshopdesktop.api.endpoints.CustomerApi;
 import org.example.petshopdesktop.auth.UserSession;
 import org.example.petshopdesktop.Validator;
 import org.example.petshopdesktop.util.ActivityLogger;
+import org.example.petshopdesktop.util.TextFieldFormatSupport;
 
 public class StaffRegisterDialogController {
 
@@ -45,6 +46,11 @@ public class StaffRegisterDialogController {
     @FXML
     private Button btnCreate;
 
+    @FXML
+    void initialize() {
+        TextFieldFormatSupport.applyPhoneNumberFormat(txtPhone);
+    }
+
     @FXML
     void btnCreateClicked(ActionEvent event) {
         lblError.setText("");
@@ -82,6 +88,10 @@ public class StaffRegisterDialogController {
             lblError.setText("Password is required.");
             return;
         }
+        if (password.length() < 6) {
+            lblError.setText("Password must be at least 6 characters.");
+            return;
+        }
         if (!password.equals(confirm)) {
             lblError.setText("Passwords do not match.");
             return;

desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/SupplierDialogController.java

@@ -15,6 +15,7 @@ import org.example.petshopdesktop.api.dto.supplier.SupplierResponse;
 import org.example.petshopdesktop.api.endpoints.SupplierApi;
 import org.example.petshopdesktop.models.Supplier;
 import org.example.petshopdesktop.util.ActivityLogger;
+import org.example.petshopdesktop.util.TextFieldFormatSupport;
 
 public class SupplierDialogController {
 
@@ -52,6 +53,8 @@ public class SupplierDialogController {
      */
     @FXML
     void initialize() {
+        TextFieldFormatSupport.applyPhoneNumberFormat(txtPhone);
+
         //Set up mouse handlers for buttons
         btnSave.setOnMouseClicked(new EventHandler<MouseEvent>() {
             @Override

desktop/src/main/java/org/example/petshopdesktop/util/TextFieldFormatSupport.java

@@ -0,0 +1,55 @@
+package org.example.petshopdesktop.util;
+
+import javafx.application.Platform;
+import javafx.scene.control.TextField;
+import javafx.scene.control.TextFormatter;
+
+import java.util.function.UnaryOperator;
+
+public class TextFieldFormatSupport {
+
+    /**
+     * Applies a phone number formatter to a TextField.
+     * The formatter only allows digits and automatically formats the input as (XXX) XXX-XXXX.
+     *
+     * @param textField The TextField to apply the formatter to.
+     */
+    public static void applyPhoneNumberFormat(TextField textField) {
+        textField.textProperty().addListener((observable, oldValue, newValue) -> {
+            if (newValue == null) return;
+
+            // Remove all non-digit characters
+            String digits = newValue.replaceAll("\\D", "");
+
+            // Limit to 10 digits
+            if (digits.length() > 10) {
+                digits = digits.substring(0, 10);
+            }
+
+            StringBuilder formatted = new StringBuilder();
+            int len = digits.length();
+
+            if (len > 0) {
+                formatted.append("(");
+                if (len <= 3) {
+                    formatted.append(digits);
+                } else {
+                    formatted.append(digits, 0, 3).append(") ");
+                    if (len <= 6) {
+                        formatted.append(digits.substring(3));
+                    } else {
+                        formatted.append(digits, 3, 6).append("-").append(digits.substring(6));
+                    }
+                }
+            }
+
+            String result = formatted.toString();
+            if (!result.equals(newValue)) {
+                Platform.runLater(() -> {
+                    textField.setText(result);
+                    textField.positionCaret(result.length());
+                });
+            }
+        });
+    }
+}

desktop/src/main/resources/org/example/petshopdesktop/dialogviews/pet-dialog-view.fxml

@@ -91,7 +91,7 @@
                                         <Font name="System Bold" size="16.0" />
                                     </font>
                                 </Label>
-                                <ComboBox fx:id="cbPetSpecies" editable="true" prefHeight="29.0" prefWidth="336.0" promptText="Select or enter species" style="-fx-border-color: #E8EBED; -fx-border-width: 2; -fx-border-radius: 10; -fx-background-radius: 10; -fx-background-color: white;">
+                                <ComboBox fx:id="cbPetSpecies" prefHeight="29.0" prefWidth="336.0" promptText="Select Species" style="-fx-border-color: #E8EBED; -fx-border-width: 2; -fx-border-radius: 10; -fx-background-radius: 10; -fx-background-color: white;">
                                     <padding>
                                         <Insets bottom="3.0" left="10.0" right="10.0" top="3.0" />
                                     </padding>
@@ -105,11 +105,11 @@
                                         <Font name="System Bold" size="16.0" />
                                     </font>
                                 </Label>
-                                <TextField fx:id="txtPetBreed" style="-fx-border-color: #E8EBED; -fx-border-width: 2; -fx-border-radius: 10; -fx-background-radius: 10;">
+                                <ComboBox fx:id="cbPetBreed" prefHeight="29.0" prefWidth="336.0" promptText="Select Species first" style="-fx-border-color: #E8EBED; -fx-border-width: 2; -fx-border-radius: 10; -fx-background-radius: 10; -fx-background-color: white;">
                                     <padding>
-                                        <Insets bottom="7.0" left="10.0" right="10.0" top="7.0" />
+                                        <Insets bottom="3.0" left="10.0" right="10.0" top="3.0" />
                                     </padding>
-                                </TextField>
+                                </ComboBox>
                             </children>
                         </VBox>
                         <VBox prefHeight="200.0" prefWidth="100.0" spacing="8.0" GridPane.columnIndex="1" GridPane.rowIndex="1">

desktop/src/main/resources/org/example/petshopdesktop/main-layout-view.fxml

@@ -176,6 +176,14 @@
                               <Insets bottom="8.0" left="10.0" right="10.0" top="8.0" />
                            </padding>
                         </Button>
+                         <Button fx:id="btnCustomers" alignment="CENTER_LEFT" maxWidth="Infinity" mnemonicParsing="false" onAction="#btnCustomersClicked" style="-fx-background-color: transparent; -fx-background-radius: 8; -fx-cursor: hand; -fx-focus-color: transparent; -fx-faint-focus-color: transparent;" text="Customers" textFill="#cbd5e1">
+                            <font>
+                               <Font name="System" size="12.0" />
+                            </font>
+                            <padding>
+                               <Insets bottom="8.0" left="10.0" right="10.0" top="8.0" />
+                            </padding>
+                         </Button>
 
                         <Separator fx:id="separatorAdmin" prefWidth="200.0" style="-fx-background-color: #444444; -fx-opacity: 0.35;" />
 
@@ -220,7 +228,7 @@
                               <Insets bottom="8.0" left="10.0" right="10.0" top="8.0" />
                            </padding>
                         </Button>
-                         <Button fx:id="btnStaffAccounts" alignment="CENTER_LEFT" maxWidth="Infinity" mnemonicParsing="false" onAction="#btnStaffAccountsClicked" style="-fx-background-color: transparent; -fx-background-radius: 8; -fx-cursor: hand; -fx-focus-color: transparent; -fx-faint-focus-color: transparent;" text="User Accounts" textFill="#cbd5e1">
+                         <Button fx:id="btnStaffAccounts" alignment="CENTER_LEFT" maxWidth="Infinity" mnemonicParsing="false" onAction="#btnStaffAccountsClicked" style="-fx-background-color: transparent; -fx-background-radius: 8; -fx-cursor: hand; -fx-focus-color: transparent; -fx-faint-focus-color: transparent;" text="Staff Accounts" textFill="#cbd5e1">
                             <font>
                                <Font name="System" size="12.0" />
                             </font>

desktop/src/main/resources/org/example/petshopdesktop/modelviews/customer-accounts-view.fxml

@@ -0,0 +1,89 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.control.TableColumn?>
+<?import javafx.scene.control.TableView?>
+<?import javafx.scene.control.TextField?>
+<?import javafx.scene.layout.HBox?>
+<?import javafx.scene.layout.Region?>
+<?import javafx.scene.layout.VBox?>
+<?import javafx.scene.text.Font?>
+
+<VBox spacing="16.0" style="-fx-font-size: 14px;" xmlns="http://javafx.com/javafx/25" xmlns:fx="http://javafx.com/fxml/1" fx:controller="org.example.petshopdesktop.controllers.CustomerAccountsController">
+    <padding>
+        <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
+    </padding>
+
+    <children>
+        <HBox alignment="CENTER_LEFT" spacing="20.0">
+            <children>
+                <Label text="Customers" textFill="#2c3e50">
+                    <font>
+                        <Font name="System Bold" size="30.0" />
+                    </font>
+                </Label>
+                <Region HBox.hgrow="ALWAYS" />
+                <Button fx:id="btnRefresh" mnemonicParsing="false" onAction="#btnRefreshClicked" prefHeight="44.0" prefWidth="118.0" style="-fx-background-color: #4ECDC4; -fx-cursor: hand; -fx-background-radius: 8;" text="Refresh" textFill="WHITE">
+                    <font>
+                        <Font name="System Bold" size="14.0" />
+                    </font>
+                    <padding>
+                        <Insets bottom="12.0" left="24.0" right="24.0" top="12.0" />
+                    </padding>
+                </Button>
+            </children>
+        </HBox>
+
+        <VBox spacing="10.0" VBox.vgrow="ALWAYS">
+            <children>
+                <HBox alignment="CENTER_LEFT" spacing="12.0">
+                    <children>
+                        <Region HBox.hgrow="ALWAYS" />
+                        <Button fx:id="btnEditCustomer" mnemonicParsing="false" onAction="#btnEditCustomerClicked" prefHeight="40.0" style="-fx-background-color: #F4A261; -fx-cursor: hand; -fx-background-radius: 8;" text="Edit Customer" textFill="WHITE">
+                            <font>
+                                <Font name="System Bold" size="14.0" />
+                            </font>
+                            <padding>
+                                <Insets bottom="10.0" left="20.0" right="20.0" top="10.0" />
+                            </padding>
+                        </Button>
+                    </children>
+                </HBox>
+
+                <HBox alignment="CENTER_LEFT" spacing="10.0" style="-fx-background-color: white; -fx-background-radius: 14; -fx-border-width: 1; -fx-border-radius: 14; -fx-border-color: #e6e6e6;">
+                    <padding>
+                        <Insets bottom="10.0" left="15.0" right="15.0" top="10.0" />
+                    </padding>
+                    <children>
+                        <TextField fx:id="txtSearchCustomer" promptText="Search customers..." style="-fx-border-width: 0; -fx-background-color: transparent;" HBox.hgrow="ALWAYS">
+                            <font>
+                                <Font size="15.0" />
+                            </font>
+                        </TextField>
+                    </children>
+                </HBox>
+
+                <TableView fx:id="tvCustomers" style="-fx-background-color: white; -fx-background-radius: 12;" VBox.vgrow="ALWAYS">
+                    <columns>
+                        <TableColumn fx:id="colCustomerUsername" prefWidth="130.0" text="Username" />
+                        <TableColumn fx:id="colCustomerName" prefWidth="160.0" text="Name" />
+                        <TableColumn fx:id="colCustomerEmail" prefWidth="200.0" text="Email" />
+                        <TableColumn fx:id="colCustomerPhone" prefWidth="130.0" text="Phone" />
+                        <TableColumn fx:id="colCustomerLoyaltyPoints" prefWidth="120.0" text="Loyalty Points" />
+                        <TableColumn fx:id="colCustomerStatus" prefWidth="90.0" text="Status" />
+                        <TableColumn fx:id="colCustomerCreated" prefWidth="150.0" text="Created" />
+                    </columns>
+                </TableView>
+            </children>
+        </VBox>
+
+        <Label fx:id="lblStatus" text="" textFill="#64748b" visible="false" managed="true">
+            <font>
+                <Font size="13.0" />
+            </font>
+        </Label>
+        <Label fx:id="lblError" text="" textFill="#FF6B6B" wrapText="true" />
+    </children>
+</VBox>

desktop/src/main/resources/org/example/petshopdesktop/modelviews/sale-view.fxml

@@ -48,7 +48,7 @@
                         </HBox>
                      </children>
                   </VBox>
-                  <FlowPane hgap="8.0" maxWidth="Infinity" prefWrapLength="260.0" vgap="8.0">
+                  <HBox alignment="CENTER_RIGHT" spacing="8.0">
                      <children>
                         <Button fx:id="btnRefund" mnemonicParsing="false" onAction="#btnRefund" prefHeight="32.0" style="-fx-background-color: #FF6b6b; -fx-cursor: hand; -fx-background-radius: 8;" text="Process Refund" textFill="WHITE">
                            <font>
@@ -67,7 +67,7 @@
                            </padding>
                         </Button>
                      </children>
-                  </FlowPane>
+                  </HBox>
                </children>
             </HBox>
 

desktop/src/main/resources/org/example/petshopdesktop/modelviews/staff-accounts-view.fxml

@@ -11,7 +11,7 @@
 <?import javafx.scene.layout.VBox?>
 <?import javafx.scene.text.Font?>
 
-<VBox spacing="20.0" style="-fx-font-size: 14px;" xmlns="http://javafx.com/javafx/25" xmlns:fx="http://javafx.com/fxml/1" fx:controller="org.example.petshopdesktop.controllers.StaffAccountsController">
+<VBox spacing="16.0" style="-fx-font-size: 14px;" xmlns="http://javafx.com/javafx/25" xmlns:fx="http://javafx.com/fxml/1" fx:controller="org.example.petshopdesktop.controllers.StaffAccountsController">
     <padding>
         <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
     </padding>
@@ -19,28 +19,12 @@
     <children>
         <HBox alignment="CENTER_LEFT" spacing="20.0">
             <children>
-                <Label text="User Accounts" textFill="#2c3e50">
+                <Label text="Staff Accounts" textFill="#2c3e50">
                     <font>
                         <Font name="System Bold" size="30.0" />
                     </font>
                 </Label>
                 <Region HBox.hgrow="ALWAYS" />
-                <Button fx:id="btnCreateAccount" mnemonicParsing="false" onAction="#btnCreateAccountClicked" prefHeight="44.0" style="-fx-background-color: #FF6B6B; -fx-cursor: hand; -fx-background-radius: 8;" text="Create Account" textFill="WHITE">
-                    <font>
-                        <Font name="System Bold" size="14.0" />
-                    </font>
-                    <padding>
-                        <Insets bottom="12.0" left="24.0" right="24.0" top="12.0" />
-                    </padding>
-                </Button>
-                <Button fx:id="btnEditAccount" mnemonicParsing="false" onAction="#btnEditAccountClicked" prefHeight="44.0" style="-fx-background-color: #F4A261; -fx-cursor: hand; -fx-background-radius: 8;" text="Edit Account" textFill="WHITE">
-                    <font>
-                        <Font name="System Bold" size="14.0" />
-                    </font>
-                    <padding>
-                        <Insets bottom="12.0" left="24.0" right="24.0" top="12.0" />
-                    </padding>
-                </Button>
                 <Button fx:id="btnRefresh" mnemonicParsing="false" onAction="#btnRefreshClicked" prefHeight="44.0" prefWidth="118.0" style="-fx-background-color: #4ECDC4; -fx-cursor: hand; -fx-background-radius: 8;" text="Refresh" textFill="WHITE">
                     <font>
                         <Font name="System Bold" size="14.0" />
@@ -52,31 +36,56 @@
             </children>
         </HBox>
 
-        <HBox alignment="CENTER_LEFT" spacing="10.0" style="-fx-background-color: white; -fx-background-radius: 14; -fx-border-width: 1; -fx-border-radius: 14; -fx-border-color: #e6e6e6;">
+        <VBox fx:id="staffSection" spacing="10.0" VBox.vgrow="ALWAYS">
-            <padding>
-                <Insets bottom="10.0" left="15.0" right="15.0" top="10.0" />
-            </padding>
             <children>
-                <TextField fx:id="txtSearch" promptText="Search users..." style="-fx-border-width: 0; -fx-background-color: transparent;" HBox.hgrow="ALWAYS">
+                <HBox alignment="CENTER_LEFT" spacing="12.0">
-                    <font>
+                    <children>
-                        <Font size="15.0" />
+                        <Region HBox.hgrow="ALWAYS" />
-                    </font>
+                        <Button fx:id="btnCreateAccount" mnemonicParsing="false" onAction="#btnCreateAccountClicked" prefHeight="40.0" style="-fx-background-color: #FF6B6B; -fx-cursor: hand; -fx-background-radius: 8;" text="Create Account" textFill="WHITE">
-                </TextField>
+                            <font>
+                                <Font name="System Bold" size="14.0" />
+                            </font>
+                            <padding>
+                                <Insets bottom="10.0" left="20.0" right="20.0" top="10.0" />
+                            </padding>
+                        </Button>
+                        <Button fx:id="btnEditAccount" mnemonicParsing="false" onAction="#btnEditAccountClicked" prefHeight="40.0" style="-fx-background-color: #F4A261; -fx-cursor: hand; -fx-background-radius: 8;" text="Edit Account" textFill="WHITE">
+                            <font>
+                                <Font name="System Bold" size="14.0" />
+                            </font>
+                            <padding>
+                                <Insets bottom="10.0" left="20.0" right="20.0" top="10.0" />
+                            </padding>
+                        </Button>
+                    </children>
+                </HBox>
+
+                <HBox alignment="CENTER_LEFT" spacing="10.0" style="-fx-background-color: white; -fx-background-radius: 14; -fx-border-width: 1; -fx-border-radius: 14; -fx-border-color: #e6e6e6;">
+                    <padding>
+                        <Insets bottom="10.0" left="15.0" right="15.0" top="10.0" />
+                    </padding>
+                    <children>
+                        <TextField fx:id="txtSearch" promptText="Search staff..." style="-fx-border-width: 0; -fx-background-color: transparent;" HBox.hgrow="ALWAYS">
+                            <font>
+                                <Font size="15.0" />
+                            </font>
+                        </TextField>
+                    </children>
+                </HBox>
+
+                <TableView fx:id="tvStaff" style="-fx-background-color: white; -fx-background-radius: 12;" VBox.vgrow="ALWAYS">
+                    <columns>
+                        <TableColumn fx:id="colUsername" prefWidth="140.0" text="Username" />
+                        <TableColumn fx:id="colName" prefWidth="170.0" text="Name" />
+                        <TableColumn fx:id="colEmail" prefWidth="210.0" text="Email" />
+                        <TableColumn fx:id="colPhone" prefWidth="130.0" text="Phone" />
+                        <TableColumn fx:id="colRole" prefWidth="100.0" text="Role" />
+                        <TableColumn fx:id="colStatus" prefWidth="90.0" text="Status" />
+                        <TableColumn fx:id="colCreated" prefWidth="150.0" text="Created" />
+                    </columns>
+                </TableView>
             </children>
-        </HBox>
+        </VBox>
-
-        <TableView fx:id="tvStaff" style="-fx-background-color: white; -fx-background-radius: 12;" VBox.vgrow="ALWAYS">
-            <columns>
-                <TableColumn fx:id="colUsername" prefWidth="140.0" text="Username" />
-                <TableColumn fx:id="colName" prefWidth="170.0" text="Name" />
-                <TableColumn fx:id="colEmail" prefWidth="210.0" text="Email" />
-                <TableColumn fx:id="colPhone" prefWidth="130.0" text="Phone" />
-                <TableColumn fx:id="colRole" prefWidth="100.0" text="Role" />
-                <TableColumn fx:id="colStatus" prefWidth="90.0" text="Status" />
-                <TableColumn fx:id="colCreated" prefWidth="150.0" text="Created" />
-            </columns>
-        </TableView>
-
 
         <Label fx:id="lblStatus" text="" textFill="#64748b" visible="false" managed="true">
             <font>