Update early fixes

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

@@ -2,10 +2,12 @@ package com.example.petstoremobile.adapters;
 
 import android.graphics.Color;
 import android.view.*;
+import android.widget.ImageView;
 import android.widget.TextView;
 import androidx.annotation.NonNull;
 import androidx.recyclerview.widget.RecyclerView;
 import com.example.petstoremobile.R;
+import com.example.petstoremobile.databinding.ItemEmployeeBinding;
 import com.example.petstoremobile.dtos.EmployeeDTO;
 import java.util.List;
 
@@ -24,47 +26,48 @@ public class EmployeeAdapter extends RecyclerView.Adapter<EmployeeAdapter.Employ
     }
 
     public static class EmployeeViewHolder extends RecyclerView.ViewHolder {
-        TextView tvFullName, tvUsername, tvEmail, tvPhone, tvRole, tvStatus;
+        private final ItemEmployeeBinding binding;
 
-        public EmployeeViewHolder(@NonNull View v) {
+        public EmployeeViewHolder(@NonNull ItemEmployeeBinding binding) {
-            super(v);
+            super(binding.getRoot());
-            tvFullName = v.findViewById(R.id.tvEmployeeFullName);
+            this.binding = binding;
-            tvUsername = v.findViewById(R.id.tvEmployeeUsername);
-            tvEmail    = v.findViewById(R.id.tvEmployeeEmail);
-            tvPhone    = v.findViewById(R.id.tvEmployeePhone);
-            tvRole     = v.findViewById(R.id.tvEmployeeRole);
-            tvStatus   = v.findViewById(R.id.tvEmployeeStatus);
         }
     }
 
     @NonNull
     @Override
     public EmployeeViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
-        View v = LayoutInflater.from(parent.getContext())
+        ItemEmployeeBinding binding = ItemEmployeeBinding.inflate(
-                .inflate(R.layout.item_employee, parent, false);
+                LayoutInflater.from(parent.getContext()), parent, false);
-        return new EmployeeViewHolder(v);
+        return new EmployeeViewHolder(binding);
     }
 
     @Override
     public void onBindViewHolder(@NonNull EmployeeViewHolder holder, int position) {
         EmployeeDTO e = list.get(position);
+        ItemEmployeeBinding binding = holder.binding;
 
-        holder.tvFullName.setText(e.getFullName() != null ? e.getFullName() : "");
+        binding.tvEmployeeFullName.setText(e.getFullName() != null ? e.getFullName() : "");
-        holder.tvUsername.setText("@" + (e.getUsername() != null ? e.getUsername() : ""));
+        binding.tvEmployeeUsername.setText("@" + (e.getUsername() != null ? e.getUsername() : ""));
-        holder.tvEmail.setText(e.getEmail() != null ? e.getEmail() : "");
+        binding.tvEmployeeEmail.setText(e.getEmail() != null ? e.getEmail() : "");
-        holder.tvPhone.setText(e.getPhone() != null ? e.getPhone() : "");
 
         // Role badge
-        String role = e.getRole() != null ? e.getRole() : "";
+        String role = e.getRole() != null ? e.getRole() : "STAFF";
-        holder.tvRole.setText(role);
+        binding.tvEmployeeRole.setText(role);
-        holder.tvRole.setBackgroundColor(
+        
-                "ADMIN".equals(role) ? Color.parseColor("#1a759f") : Color.parseColor("#577590"));
+        if ("ADMIN".equalsIgnoreCase(role)) {
-
+            binding.tvEmployeeRole.setBackgroundColor(Color.parseColor("#1a759f"));
-        // Status badge
+        } else {
+            binding.tvEmployeeRole.setBackgroundColor(Color.parseColor("#577590"));
+        }
+        
+        // Status text and color
         boolean active = Boolean.TRUE.equals(e.getActive());
-        holder.tvStatus.setText(active ? "Active" : "Inactive");
+        binding.tvEmployeeStatus.setText(active ? "Active" : "Inactive");
-        holder.tvStatus.setBackgroundColor(
+        binding.tvEmployeeStatus.setTextColor(active ? Color.parseColor("#4CAF50") : Color.parseColor("#F44336"));
-                active ? Color.parseColor("#4CAF50") : Color.parseColor("#F44336"));
+
+        // Placeholder for profile image - matching Pet style
+        binding.ivEmployeeProfile.setImageResource(R.drawable.placeholder);
 
         holder.itemView.setOnClickListener(v -> listener.onEmployeeClick(position));
     }

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

@@ -1,11 +1,12 @@
 package com.example.petstoremobile.adapters;
 
-import android.graphics.Color;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import androidx.annotation.NonNull;
+import androidx.core.content.ContextCompat;
 import androidx.recyclerview.widget.RecyclerView;
+import com.example.petstoremobile.R;
 import com.example.petstoremobile.databinding.ItemSaleBinding;
 import com.example.petstoremobile.dtos.SaleDTO;
 import java.util.List;
@@ -53,11 +54,10 @@ public class SaleAdapter extends RecyclerView.Adapter<SaleAdapter.SaleViewHolder
 
         if (Boolean.TRUE.equals(s.getIsRefund())) {
             binding.tvSaleRefundBadge.setVisibility(View.VISIBLE);
-            binding.tvSaleRefundBadge.setBackgroundColor(Color.parseColor("#F44336"));
+            binding.tvSaleTotal.setTextColor(ContextCompat.getColor(holder.itemView.getContext(), R.color.status_adopted));
-            binding.tvSaleTotal.setTextColor(Color.parseColor("#F44336"));
         } else {
             binding.tvSaleRefundBadge.setVisibility(View.GONE);
-            binding.tvSaleTotal.setTextColor(Color.parseColor("#4CAF50"));
+            binding.tvSaleTotal.setTextColor(ContextCompat.getColor(holder.itemView.getContext(), R.color.status_available));
         }
 
         holder.itemView.setOnClickListener(v -> listener.onSaleClick(position));

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

@@ -15,11 +15,15 @@ public interface SaleApi {
     @GET("api/v1/sales")
     Call<PageResponse<SaleDTO>> getAllSales(
             @Query("page") int page,
-            @Query("size") int size);
+            @Query("size") int size,
+            @Query("q") String query,
+            @Query("paymentMethod") String paymentMethod,
+            @Query("storeId") Long storeId,
+            @Query("sort") String sort);
 
     @GET("api/v1/sales/{id}")
     Call<SaleDTO> getSaleById(@Path("id") Long id);
 
     @POST("api/v1/sales")
     Call<SaleDTO> createSale(@Body SaleDTO sale);
-}
+}

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

@@ -12,9 +12,16 @@ public class SaleDTO {
     private Long storeId;
     private String storeName;
     private BigDecimal totalAmount;
+    private BigDecimal subtotalAmount;
+    private BigDecimal couponDiscountAmount;
+    private BigDecimal employeeDiscountAmount;
     private String paymentMethod;
+    private String channel;
     private Boolean isRefund;
     private Long originalSaleId;
+    private Long cartId;
+    private Long couponId;
+    private Integer pointsEarned;
     private List<SaleItemDTO> items;
     private String createdAt;
 
@@ -60,10 +67,26 @@ public class SaleDTO {
         return totalAmount;
     }
 
+    public BigDecimal getSubtotalAmount() {
+        return subtotalAmount;
+    }
+
+    public BigDecimal getCouponDiscountAmount() {
+        return couponDiscountAmount;
+    }
+
+    public BigDecimal getEmployeeDiscountAmount() {
+        return employeeDiscountAmount;
+    }
+
     public String getPaymentMethod() {
         return paymentMethod;
     }
 
+    public String getChannel() {
+        return channel;
+    }
+
     public Boolean getIsRefund() {
         return isRefund;
     }
@@ -72,6 +95,18 @@ public class SaleDTO {
         return originalSaleId;
     }
 
+    public Long getCartId() {
+        return cartId;
+    }
+
+    public Long getCouponId() {
+        return couponId;
+    }
+
+    public Integer getPointsEarned() {
+        return pointsEarned;
+    }
+
     public List<SaleItemDTO> getItems() {
         return items;
     }
@@ -118,4 +153,4 @@ public class SaleDTO {
             return unitPrice;
         }
     }
-}
+}

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

@@ -2,8 +2,6 @@ package com.example.petstoremobile.fragments.listfragments;
 
 import android.graphics.Color;
 import android.os.Bundle;
-import android.text.Editable;
-import android.text.TextWatcher;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -22,10 +20,10 @@ import com.example.petstoremobile.adapters.AdoptionAdapter;
 import com.example.petstoremobile.databinding.FragmentAdoptionBinding;
 import com.example.petstoremobile.dtos.AdoptionDTO;
 import com.example.petstoremobile.dtos.StoreDTO;
-import com.example.petstoremobile.fragments.ListFragment;
 import com.example.petstoremobile.utils.BulkDeleteHandler;
 import com.example.petstoremobile.utils.Resource;
 import com.example.petstoremobile.utils.SpinnerUtils;
+import com.example.petstoremobile.utils.UIUtils;
 import com.example.petstoremobile.viewmodels.AdoptionViewModel;
 import com.example.petstoremobile.utils.EventDecorator;
 import com.example.petstoremobile.viewmodels.StoreViewModel;
@@ -86,15 +84,7 @@ public class AdoptionFragment extends Fragment implements AdoptionAdapter.OnAdop
 
         binding.fabAddAdoption.setOnClickListener(v -> openDetail(-1));
 
-        binding.btnHamburgerAdoption.setOnClickListener(v -> {
+        UIUtils.setupHamburgerMenu(binding.btnHamburgerAdoption, this);
-            Fragment parent = getParentFragment();
-            if (parent != null) {
-                Fragment grandParent = parent.getParentFragment();
-                if (grandParent instanceof ListFragment) {
-                    ((ListFragment) grandParent).openDrawer();
-                }
-            }
-        });
 
         binding.btnToggleCalendarModeAdoption.setOnClickListener(v -> toggleCalendarMode());
 
@@ -141,20 +131,24 @@ public class AdoptionFragment extends Fragment implements AdoptionAdapter.OnAdop
      * Sets up the filter toggle button to show/hide the filter layout.
      */
     private void setupFilterToggle() {
-        binding.btnToggleFilterAdoption.setOnClickListener(v -> {
+        UIUtils.setupFilterToggle(binding.btnToggleFilterAdoption, binding.layoutFilterAdoption, 
-            if (binding.layoutFilterAdoption.getVisibility() == View.GONE) {
+                binding.etSearchAdoption, binding.spinnerStatusAdoption, binding.spinnerStoreAdoption);
-                binding.layoutFilterAdoption.setVisibility(View.VISIBLE);
-                binding.btnToggleFilterAdoption.setImageResource(android.R.drawable.ic_menu_close_clear_cancel);
-            } else {
-                binding.layoutFilterAdoption.setVisibility(View.GONE);
-                binding.btnToggleFilterAdoption.setImageResource(android.R.drawable.ic_menu_search);
 
-                // Reset filters when closing
+        binding.btnToggleFilterAdoption.setOnClickListener(v -> {
+            boolean isVisible = binding.layoutFilterAdoption.getVisibility() == View.VISIBLE;
+            binding.layoutFilterAdoption.setVisibility(isVisible ? View.GONE : View.VISIBLE);
+            
+            binding.btnToggleFilterAdoption.setImageResource(isVisible ? 
+                    android.R.drawable.ic_menu_search : 
+                    android.R.drawable.ic_menu_close_clear_cancel);
+
+            if (isVisible) {
                 binding.etSearchAdoption.setText("");
                 binding.spinnerStatusAdoption.setSelection(0);
                 binding.spinnerStoreAdoption.setSelection(0);
                 selectedCalendarDay = null;
                 binding.calendarViewAdoption.clearSelection();
+                loadAdoptions();
             }
         });
     }
@@ -214,13 +208,7 @@ public class AdoptionFragment extends Fragment implements AdoptionAdapter.OnAdop
      * Sets up the search bar for filtering
      */
     private void setupSearch() {
-        binding.etSearchAdoption.addTextChangedListener(new TextWatcher() {
+        UIUtils.attachSearch(binding.etSearchAdoption, this::loadAdoptions);
-            @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
-            @Override public void onTextChanged(CharSequence s, int start, int before, int count) {
-                loadAdoptions();
-            }
-            @Override public void afterTextChanged(Editable s) {}
-        });
     }
 
     /**

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

@@ -5,91 +5,77 @@ import android.os.Bundle;
 import android.util.Log;
 import android.view.*;
 import android.widget.*;
+import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
-import com.example.petstoremobile.R;
+import androidx.lifecycle.ViewModelProvider;
-import com.example.petstoremobile.api.RetrofitClient;
+import com.example.petstoremobile.databinding.FragmentAnalyticsBinding;
-import com.example.petstoremobile.dtos.PageResponse;
 import com.example.petstoremobile.dtos.SaleDTO;
-import com.example.petstoremobile.fragments.ListFragment;
+import com.example.petstoremobile.utils.UIUtils;
+import com.example.petstoremobile.viewmodels.SaleViewModel;
+import dagger.hilt.android.AndroidEntryPoint;
 import java.math.BigDecimal;
 import java.math.RoundingMode;
 import java.util.*;
-import retrofit2.*;
 
+@AndroidEntryPoint
 public class AnalyticsFragment extends Fragment {
 
-    private TextView tvTotalRevenue, tvTotalTransactions, tvAvgTransaction, tvTotalItems;
+    private FragmentAnalyticsBinding binding;
-    private LinearLayout llTopRevenue, llTopQuantity, llPaymentMethods, llEmployeePerformance, llDailyRevenue;
+    private SaleViewModel saleViewModel;
-    private Button btnRefresh;
-    private ImageButton hamburger;
 
     @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.fragment_analytics, container, false);
+        binding = FragmentAnalyticsBinding.inflate(inflater, container, false);
+        saleViewModel = new ViewModelProvider(this).get(SaleViewModel.class);
 
-        initViews(view);
         loadAnalytics();
 
-        btnRefresh.setOnClickListener(v -> loadAnalytics());
+        binding.btnRefreshAnalytics.setOnClickListener(v -> loadAnalytics());
-        hamburger.setOnClickListener(v -> openDrawer());
+        
+        UIUtils.setupHamburgerMenu(binding.btnHamburgerAnalytics, this);
 
-        return view;
+        return binding.getRoot();
     }
 
-    private void openDrawer() {
+    @Override
-        Fragment parent = getParentFragment();
+    public void onDestroyView() {
-        if (parent != null) {
+        super.onDestroyView();
-            Fragment grandParent = parent.getParentFragment();
+        binding = null;
-            if (grandParent instanceof ListFragment) {
-                ((ListFragment) grandParent).openDrawer();
-            }
-        }
-    }
-
-    private void initViews(View v) {
-        tvTotalRevenue = v.findViewById(R.id.tvTotalRevenue);
-        tvTotalTransactions = v.findViewById(R.id.tvTotalTransactions);
-        tvAvgTransaction = v.findViewById(R.id.tvAvgTransaction);
-        tvTotalItems = v.findViewById(R.id.tvTotalItems);
-        llTopRevenue = v.findViewById(R.id.llTopRevenue);
-        llTopQuantity = v.findViewById(R.id.llTopQuantity);
-        llPaymentMethods = v.findViewById(R.id.llPaymentMethods);
-        llEmployeePerformance = v.findViewById(R.id.llEmployeePerformance);
-        llDailyRevenue = v.findViewById(R.id.llDailyRevenue);
-        btnRefresh = v.findViewById(R.id.btnRefreshAnalytics);
-        hamburger = v.findViewById(R.id.btnHamburgerAnalytics);
     }
 
     private void loadAnalytics() {
         // Clear all sections
-        llTopRevenue.removeAllViews();
+        binding.llTopRevenue.removeAllViews();
-        llTopQuantity.removeAllViews();
+        binding.llTopQuantity.removeAllViews();
-        llPaymentMethods.removeAllViews();
+        binding.llPaymentMethods.removeAllViews();
-        llEmployeePerformance.removeAllViews();
+        binding.llEmployeePerformance.removeAllViews();
-        llDailyRevenue.removeAllViews();
+        binding.llDailyRevenue.removeAllViews();
 
         // Show loading
-        tvTotalRevenue.setText("Loading...");
+        binding.tvTotalRevenue.setText("Loading...");
-        tvTotalTransactions.setText("...");
+        binding.tvTotalTransactions.setText("...");
-        tvAvgTransaction.setText("...");
+        binding.tvAvgTransaction.setText("...");
-        tvTotalItems.setText("...");
+        binding.tvTotalItems.setText("...");
 
-        RetrofitClient.getSaleApi(requireContext()).getAllSales(0, 1000)
+        saleViewModel.getAllSales(0, 1000, null, null, null, "saleDate,desc")
-                .enqueue(new Callback<PageResponse<SaleDTO>>() {
+                .observe(getViewLifecycleOwner(), resource -> {
-                    public void onResponse(Call<PageResponse<SaleDTO>> c,
+                    if (resource != null) {
-                                           Response<PageResponse<SaleDTO>> r) {
+                        switch (resource.status) {
-                        if (r.isSuccessful() && r.body() != null) {
+                            case SUCCESS:
-                            computeAndDisplay(r.body().getContent());
+                                if (resource.data != null) {
-                        } else {
+                                    computeAndDisplay(resource.data.getContent());
-                            showError("Failed to load sales data");
+                                }
+                                break;
+                            case ERROR:
+                                Log.e("Analytics", resource.message != null ? resource.message : "Error loading sales");
+                                showError("Failed to load sales data");
+                                break;
+                            case LOADING:
+                                // Already showing loading state in UI
+                                break;
                         }
                     }
-
-                    public void onFailure(Call<PageResponse<SaleDTO>> c, Throwable t) {
-                        Log.e("Analytics", t.getMessage());
-                        showError("Network error");
-                    }
                 });
     }
 
@@ -121,10 +107,10 @@ public class AnalyticsFragment extends Fragment {
                 ? totalRevenue.divide(BigDecimal.valueOf(totalTx), 2, RoundingMode.HALF_UP)
                 : BigDecimal.ZERO;
 
-        tvTotalRevenue.setText("$" + totalRevenue.setScale(2, RoundingMode.HALF_UP));
+        binding.tvTotalRevenue.setText("$" + totalRevenue.setScale(2, RoundingMode.HALF_UP));
-        tvTotalTransactions.setText(String.valueOf(totalTx));
+        binding.tvTotalTransactions.setText(String.valueOf(totalTx));
-        tvAvgTransaction.setText("$" + avgTx);
+        binding.tvAvgTransaction.setText("$" + avgTx);
-        tvTotalItems.setText(String.valueOf(totalItems));
+        binding.tvTotalItems.setText(String.valueOf(totalItems));
 
         // ── Top Products by Revenue ───────────────────────────
         Map<String, BigDecimal> revenueByProduct = new LinkedHashMap<>();
@@ -150,28 +136,28 @@ public class AnalyticsFragment extends Fragment {
         topRevenue.sort((a, b) -> b.getValue().compareTo(a.getValue()));
         BigDecimal maxRevenue = topRevenue.isEmpty() ? BigDecimal.ONE : topRevenue.get(0).getValue();
 
-        llTopRevenue.removeAllViews();
+        binding.llTopRevenue.removeAllViews();
         for (int i = 0; i < Math.min(5, topRevenue.size()); i++) {
             Map.Entry<String, BigDecimal> e = topRevenue.get(i);
-            addBarRow(llTopRevenue, e.getKey(), "$" + e.getValue().setScale(2, RoundingMode.HALF_UP),
+            addBarRow(binding.llTopRevenue, e.getKey(), "$" + e.getValue().setScale(2, RoundingMode.HALF_UP),
                     e.getValue().floatValue() / maxRevenue.floatValue(), "#ff6b35");
         }
         if (topRevenue.isEmpty())
-            addEmptyRow(llTopRevenue, "No data");
+            addEmptyRow(binding.llTopRevenue, "No data");
 
         // Sort by quantity desc, take top 5
         List<Map.Entry<String, Integer>> topQuantity = new ArrayList<>(quantityByProduct.entrySet());
         topQuantity.sort((a, b) -> b.getValue() - a.getValue());
         int maxQty = topQuantity.isEmpty() ? 1 : topQuantity.get(0).getValue();
 
-        llTopQuantity.removeAllViews();
+        binding.llTopQuantity.removeAllViews();
         for (int i = 0; i < Math.min(5, topQuantity.size()); i++) {
             Map.Entry<String, Integer> e = topQuantity.get(i);
-            addBarRow(llTopQuantity, e.getKey(), e.getValue() + " units",
+            addBarRow(binding.llTopQuantity, e.getKey(), e.getValue() + " units",
                     (float) e.getValue() / maxQty, "#4ecdc4");
         }
         if (topQuantity.isEmpty())
-            addEmptyRow(llTopQuantity, "No data");
+            addEmptyRow(binding.llTopQuantity, "No data");
 
         // ── Payment Methods ───────────────────────────────────
         Map<String, Integer> paymentCount = new LinkedHashMap<>();
@@ -183,16 +169,16 @@ public class AnalyticsFragment extends Fragment {
         int maxPayment = paymentCount.values().stream().max(Integer::compare).orElse(1);
         String[] paymentColors = { "#1a759f", "#ff9f1c", "#577590", "#90be6d" };
         int ci = 0;
-        llPaymentMethods.removeAllViews();
+        binding.llPaymentMethods.removeAllViews();
         for (Map.Entry<String, Integer> e : paymentCount.entrySet()) {
-            addBarRow(llPaymentMethods, e.getKey(),
+            addBarRow(binding.llPaymentMethods, e.getKey(),
                     e.getValue() + " transactions",
                     (float) e.getValue() / maxPayment,
                     paymentColors[ci % paymentColors.length]);
             ci++;
         }
         if (paymentCount.isEmpty())
-            addEmptyRow(llPaymentMethods, "No data");
+            addEmptyRow(binding.llPaymentMethods, "No data");
 
         // ── Employee Performance ──────────────────────────────
         Map<String, BigDecimal> employeeRevenue = new LinkedHashMap<>();
@@ -206,15 +192,15 @@ public class AnalyticsFragment extends Fragment {
         empList.sort((a, b) -> b.getValue().compareTo(a.getValue()));
         BigDecimal maxEmp = empList.isEmpty() ? BigDecimal.ONE : empList.get(0).getValue();
 
-        llEmployeePerformance.removeAllViews();
+        binding.llEmployeePerformance.removeAllViews();
         for (Map.Entry<String, BigDecimal> e : empList) {
-            addBarRow(llEmployeePerformance, e.getKey(),
+            addBarRow(binding.llEmployeePerformance, e.getKey(),
                     "$" + e.getValue().setScale(2, RoundingMode.HALF_UP),
                     e.getValue().floatValue() / maxEmp.floatValue(),
                     "#1a759f");
         }
         if (empList.isEmpty())
-            addEmptyRow(llEmployeePerformance, "No data");
+            addEmptyRow(binding.llEmployeePerformance, "No data");
 
         // ── Daily Revenue (last 7 days) ───────────────────────
         Map<String, BigDecimal> dailyRevenue = new TreeMap<>();
@@ -247,26 +233,25 @@ public class AnalyticsFragment extends Fragment {
         if (maxDaily.compareTo(BigDecimal.ZERO) == 0)
             maxDaily = BigDecimal.ONE;
 
-        llDailyRevenue.removeAllViews();
+        binding.llDailyRevenue.removeAllViews();
         for (Map.Entry<String, BigDecimal> e : dailyRevenue.entrySet()) {
             // Show just MM-DD
             String label = e.getKey().length() >= 10
                     ? e.getKey().substring(5)
                     : e.getKey();
-            addBarRow(llDailyRevenue, label,
+            addBarRow(binding.llDailyRevenue, label,
                     "$" + e.getValue().setScale(2, RoundingMode.HALF_UP),
                     e.getValue().floatValue() / maxDaily.floatValue(),
                     "#ff6b35");
         }
     }
 
-    // Adds a horizontal bar row with label, value and a proportional bar
     private void addBarRow(LinearLayout parent, String label, String value, float ratio, String color) {
+        if (getContext() == null) return;
         LinearLayout row = new LinearLayout(getContext());
         row.setOrientation(LinearLayout.VERTICAL);
         row.setPadding(0, 6, 0, 6);
 
-        // Label + value row
         LinearLayout labelRow = new LinearLayout(getContext());
         labelRow.setOrientation(LinearLayout.HORIZONTAL);
 
@@ -286,7 +271,6 @@ public class AnalyticsFragment extends Fragment {
         labelRow.addView(tvLabel);
         labelRow.addView(tvValue);
 
-        // Bar background
         LinearLayout barBg = new LinearLayout(getContext());
         LinearLayout.LayoutParams bgParams = new LinearLayout.LayoutParams(
                 LinearLayout.LayoutParams.MATCH_PARENT, 12);
@@ -294,16 +278,13 @@ public class AnalyticsFragment extends Fragment {
         barBg.setLayoutParams(bgParams);
         barBg.setBackgroundColor(Color.parseColor("#EEEEEE"));
 
-        // Bar fill
         View barFill = new View(getContext());
-        int fillWidth = (int) (ratio * 100);
         LinearLayout.LayoutParams fillParams = new LinearLayout.LayoutParams(
                 0, LinearLayout.LayoutParams.MATCH_PARENT, ratio);
         barFill.setLayoutParams(fillParams);
         barFill.setBackgroundColor(Color.parseColor(color));
         barBg.addView(barFill);
 
-        // Empty space
         View spacer = new View(getContext());
         spacer.setLayoutParams(new LinearLayout.LayoutParams(
                 0, LinearLayout.LayoutParams.MATCH_PARENT, 1f - ratio));
@@ -315,6 +296,7 @@ public class AnalyticsFragment extends Fragment {
     }
 
     private void addEmptyRow(LinearLayout parent, String message) {
+        if (getContext() == null) return;
         TextView tv = new TextView(getContext());
         tv.setText(message);
         tv.setTextColor(Color.parseColor("#888780"));
@@ -323,12 +305,12 @@ public class AnalyticsFragment extends Fragment {
     }
 
     private void showError(String msg) {
-        if (getContext() == null)
+        if (getContext() == null || binding == null)
             return;
-        tvTotalRevenue.setText("Error");
+        binding.tvTotalRevenue.setText("Error");
-        tvTotalTransactions.setText("—");
+        binding.tvTotalTransactions.setText("—");
-        tvAvgTransaction.setText("—");
+        binding.tvAvgTransaction.setText("—");
-        tvTotalItems.setText("—");
+        binding.tvTotalItems.setText("—");
         Toast.makeText(getContext(), msg, Toast.LENGTH_SHORT).show();
     }
 }

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

@@ -10,8 +10,6 @@ import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
 import androidx.recyclerview.widget.LinearLayoutManager;
 
-import android.text.Editable;
-import android.text.TextWatcher;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -23,10 +21,10 @@ import com.example.petstoremobile.adapters.AppointmentAdapter;
 import com.example.petstoremobile.databinding.FragmentAppointmentBinding;
 import com.example.petstoremobile.dtos.AppointmentDTO;
 import com.example.petstoremobile.dtos.StoreDTO;
-import com.example.petstoremobile.fragments.ListFragment;
 import com.example.petstoremobile.utils.BulkDeleteHandler;
 import com.example.petstoremobile.utils.Resource;
 import com.example.petstoremobile.utils.SpinnerUtils;
+import com.example.petstoremobile.utils.UIUtils;
 import com.example.petstoremobile.viewmodels.AppointmentViewModel;
 import com.example.petstoremobile.utils.EventDecorator;
 import com.example.petstoremobile.viewmodels.AuthViewModel;
@@ -94,15 +92,7 @@ public class AppointmentFragment extends Fragment implements AppointmentAdapter.
 
         binding.fabAddAppointment.setOnClickListener(v -> openAppointmentDetails(-1));
 
-        binding.btnHamburger.setOnClickListener(v -> {
+        UIUtils.setupHamburgerMenu(binding.btnHamburger, this);
-            Fragment parent = getParentFragment();
-            if (parent != null) {
-                Fragment grandParent = parent.getParentFragment();
-                if (grandParent instanceof ListFragment) {
-                    ((ListFragment) grandParent).openDrawer();
-                }
-            }
-        });
 
         binding.btnToggleCalendarMode.setOnClickListener(v -> toggleCalendarMode());
 
@@ -171,21 +161,26 @@ public class AppointmentFragment extends Fragment implements AppointmentAdapter.
      * Sets up the filter toggle button to show/hide the filter layout.
      */
     private void setupFilterToggle() {
+        UIUtils.setupFilterToggle(binding.btnToggleFilter, binding.layoutFilter, binding.etSearchAppointment,
+                binding.spinnerStatus, binding.spinnerStore);
+        
+        // Add additional reset logic for elements specific to this fragment
         binding.btnToggleFilter.setOnClickListener(v -> {
-            if (binding.layoutFilter.getVisibility() == View.GONE) {
+            boolean isVisible = binding.layoutFilter.getVisibility() == View.VISIBLE;
-                binding.layoutFilter.setVisibility(View.VISIBLE);
+            binding.layoutFilter.setVisibility(isVisible ? View.GONE : View.VISIBLE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_close_clear_cancel);
+            
-            } else {
+            binding.btnToggleFilter.setImageResource(isVisible ? 
-                binding.layoutFilter.setVisibility(View.GONE);
+                    android.R.drawable.ic_menu_search : 
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_search);
+                    android.R.drawable.ic_menu_close_clear_cancel);
 
-                // Reset filters when closing
+            if (isVisible) {
                 binding.etSearchAppointment.setText("");
                 binding.spinnerStatus.setSelection(0);
                 binding.spinnerStore.setSelection(0);
                 binding.btnMyAppointments.setChecked(false);
                 selectedCalendarDay = null;
                 binding.calendarView.clearSelection();
+                loadAppointmentData();
             }
         });
     }
@@ -214,10 +209,11 @@ public class AppointmentFragment extends Fragment implements AppointmentAdapter.
      */
     private void updateCalendarDecorators() {
         HashSet<CalendarDay> datesWithAppointments = new HashSet<>();
+        SimpleDateFormat displayFormat = new SimpleDateFormat("yyyy-MM-dd", Locale.getDefault());
         for (AppointmentDTO appointment : appointmentList) {
             try {
                 //Get the appointment date
-                Date date = dateFormat.parse(appointment.getAppointmentDate());
+                Date date = displayFormat.parse(appointment.getAppointmentDate());
                 //if the date is not null, add it to the hashset
                 if (date != null) {
                     Calendar cal = Calendar.getInstance();
@@ -237,13 +233,7 @@ public class AppointmentFragment extends Fragment implements AppointmentAdapter.
      * Configures the search bar for filtering.
      */
     private void setupSearch() {
-        binding.etSearchAppointment.addTextChangedListener(new TextWatcher() {
+        UIUtils.attachSearch(binding.etSearchAppointment, this::loadAppointmentData);
-            @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
-            @Override public void onTextChanged(CharSequence s, int start, int before, int count) {
-                loadAppointmentData();
-            }
-            @Override public void afterTextChanged(Editable s) {}
-        });
     }
 
     /**

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

@@ -1,8 +1,6 @@
 package com.example.petstoremobile.fragments.listfragments;
 
 import android.os.Bundle;
-import android.text.Editable;
-import android.text.TextWatcher;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -22,8 +20,8 @@ import com.example.petstoremobile.adapters.InventoryAdapter;
 import com.example.petstoremobile.databinding.FragmentInventoryBinding;
 import com.example.petstoremobile.dtos.InventoryDTO;
 import com.example.petstoremobile.dtos.StoreDTO;
-import com.example.petstoremobile.fragments.ListFragment;
 import com.example.petstoremobile.utils.BulkDeleteHandler;
+import com.example.petstoremobile.utils.UIUtils;
 import com.example.petstoremobile.viewmodels.InventoryViewModel;
 import com.example.petstoremobile.utils.Resource;
 import com.example.petstoremobile.utils.SpinnerUtils;
@@ -79,15 +77,7 @@ public class InventoryFragment extends Fragment implements InventoryAdapter.OnIn
 
         binding.fabAddInventory.setOnClickListener(v -> openDetail(null));
 
-        binding.btnHamburger.setOnClickListener(v -> {
+        UIUtils.setupHamburgerMenu(binding.btnHamburger, this);
-            Fragment parent = getParentFragment();
-            if (parent != null) {
-                Fragment grandParent = parent.getParentFragment();
-                if (grandParent instanceof ListFragment) {
-                    ((ListFragment) grandParent).openDrawer();
-                }
-            }
-        });
 
         return binding.getRoot();
     }
@@ -115,32 +105,14 @@ public class InventoryFragment extends Fragment implements InventoryAdapter.OnIn
      * Sets up the filter toggle button to show/hide the filter layout.
      */
     private void setupFilterToggle() {
-        binding.btnToggleFilter.setOnClickListener(v -> {
+        UIUtils.setupFilterToggle(binding.btnToggleFilter, binding.layoutFilter, binding.etSearchInventory, binding.spinnerStore);
-            if (binding.layoutFilter.getVisibility() == View.GONE) {
-                binding.layoutFilter.setVisibility(View.VISIBLE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_close_clear_cancel);
-            } else {
-                binding.layoutFilter.setVisibility(View.GONE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_search);
-
-                // Reset filters when closing
-                binding.etSearchInventory.setText("");
-                binding.spinnerStore.setSelection(0);
-            }
-        });
     }
 
     /**
      * Sets up the search bar for filtering.
      */
     private void setupSearch() {
-        binding.etSearchInventory.addTextChangedListener(new TextWatcher() {
+        UIUtils.attachSearch(binding.etSearchInventory, () -> loadInventory(true));
-            @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
-            @Override public void onTextChanged(CharSequence s, int start, int before, int count) {
-                loadInventory(true);
-            }
-            @Override public void afterTextChanged(Editable s) {}
-        });
     }
 
     /**

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

@@ -9,8 +9,6 @@ import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
 import androidx.recyclerview.widget.LinearLayoutManager;
 
-import android.text.Editable;
-import android.text.TextWatcher;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -19,13 +17,14 @@ import android.widget.Toast;
 
 import com.example.petstoremobile.R;
 import com.example.petstoremobile.adapters.PetAdapter;
+import com.example.petstoremobile.api.auth.TokenManager;
 import com.example.petstoremobile.databinding.FragmentPetBinding;
 import com.example.petstoremobile.dtos.PetDTO;
 import com.example.petstoremobile.dtos.StoreDTO;
-import com.example.petstoremobile.fragments.ListFragment;
 import com.example.petstoremobile.utils.BulkDeleteHandler;
 import com.example.petstoremobile.utils.Resource;
 import com.example.petstoremobile.utils.SpinnerUtils;
+import com.example.petstoremobile.utils.UIUtils;
 import com.example.petstoremobile.viewmodels.PetViewModel;
 import com.example.petstoremobile.viewmodels.StoreViewModel;
 
@@ -48,6 +47,7 @@ public class PetFragment extends Fragment implements PetAdapter.OnPetClickListen
     private BulkDeleteHandler bulkDeleteHandler;
 
     @Inject @Named("baseUrl") String baseUrl;
+    @Inject TokenManager tokenManager;
 
     /**
      * Initializes the fragment and its associated ViewModels.
@@ -78,15 +78,7 @@ public class PetFragment extends Fragment implements PetAdapter.OnPetClickListen
 
         binding.fabAddPet.setOnClickListener(v -> openPetDetails());
 
-        binding.btnHamburger.setOnClickListener(v -> {
+        UIUtils.setupHamburgerMenu(binding.btnHamburger, this);
-            Fragment parent = getParentFragment();
-            if (parent != null) {
-                Fragment grandParent = parent.getParentFragment();
-                if (grandParent instanceof ListFragment) {
-                    ((ListFragment) grandParent).openDrawer();
-                }
-            }
-        });
 
         return binding.getRoot();
     }
@@ -124,34 +116,15 @@ public class PetFragment extends Fragment implements PetAdapter.OnPetClickListen
      * Sets up the filter toggle button to show/hide the filter layout.
      */
     private void setupFilterToggle() {
-        binding.btnToggleFilter.setOnClickListener(v -> {
+        UIUtils.setupFilterToggle(binding.btnToggleFilter, binding.layoutFilter, binding.etSearchPet,
-            if (binding.layoutFilter.getVisibility() == View.GONE) {
+                binding.spinnerStatus, binding.spinnerSpecies, binding.spinnerStore);
-                binding.layoutFilter.setVisibility(View.VISIBLE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_close_clear_cancel);
-            } else {
-                binding.layoutFilter.setVisibility(View.GONE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_search);
-
-                // Reset filters when closing
-                binding.etSearchPet.setText("");
-                binding.spinnerStatus.setSelection(0);
-                binding.spinnerSpecies.setSelection(0);
-                binding.spinnerStore.setSelection(0);
-            }
-        });
     }
 
     /**
      * Configures the search bar.
      */
     private void setupSearch() {
-        binding.etSearchPet.addTextChangedListener(new TextWatcher() {
+        UIUtils.attachSearch(binding.etSearchPet, this::loadPetData);
-            @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
-            @Override public void onTextChanged(CharSequence s, int start, int before, int count) {
-                loadPetData();
-            }
-            @Override public void afterTextChanged(Editable s) {}
-        });
     }
 
     /**
@@ -272,6 +245,7 @@ public class PetFragment extends Fragment implements PetAdapter.OnPetClickListen
     private void setupRecyclerView() {
         adapter = new PetAdapter(petList, this);
         adapter.setBaseUrl(baseUrl);
+        adapter.setToken(tokenManager.getToken());
         binding.recyclerViewPets.setLayoutManager(new LinearLayoutManager(getContext()));
         binding.recyclerViewPets.setAdapter(adapter);
     }

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

@@ -9,8 +9,6 @@ import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
 import androidx.recyclerview.widget.LinearLayoutManager;
 
-import android.text.Editable;
-import android.text.TextWatcher;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -22,9 +20,9 @@ import com.example.petstoremobile.adapters.ProductAdapter;
 import com.example.petstoremobile.databinding.FragmentProductBinding;
 import com.example.petstoremobile.dtos.CategoryDTO;
 import com.example.petstoremobile.dtos.ProductDTO;
-import com.example.petstoremobile.fragments.ListFragment;
 import com.example.petstoremobile.utils.Resource;
 import com.example.petstoremobile.utils.SpinnerUtils;
+import com.example.petstoremobile.utils.UIUtils;
 import com.example.petstoremobile.viewmodels.ProductViewModel;
 
 import java.util.ArrayList;
@@ -71,15 +69,7 @@ public class ProductFragment extends Fragment implements ProductAdapter.OnProduc
 
         binding.fabAddProduct.setOnClickListener(v -> openProductDetails(-1));
 
-        binding.btnHamburgerProduct.setOnClickListener(v -> {
+        UIUtils.setupHamburgerMenu(binding.btnHamburgerProduct, this);
-            Fragment parent = getParentFragment();
-            if (parent != null) {
-                Fragment grandParent = parent.getParentFragment();
-                if (grandParent instanceof ListFragment) {
-                    ((ListFragment) grandParent).openDrawer();
-                }
-            }
-        });
 
         return binding.getRoot();
     }
@@ -104,32 +94,15 @@ public class ProductFragment extends Fragment implements ProductAdapter.OnProduc
      * Sets up the filter toggle button to show/hide the filter layout.
      */
     private void setupFilterToggle() {
-        binding.btnToggleFilter.setOnClickListener(v -> {
+        UIUtils.setupFilterToggle(binding.btnToggleFilter, binding.layoutFilter, 
-            if (binding.layoutFilter.getVisibility() == View.GONE) {
+                binding.etSearchProduct, binding.spinnerCategory);
-                binding.layoutFilter.setVisibility(View.VISIBLE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_close_clear_cancel);
-            } else {
-                binding.layoutFilter.setVisibility(View.GONE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_search);
-
-                // Reset filters when closing
-                binding.etSearchProduct.setText("");
-                binding.spinnerCategory.setSelection(0);
-            }
-        });
     }
 
     /**
      * Configures the search bar for triggering data load from backend.
      */
     private void setupSearch() {
-        binding.etSearchProduct.addTextChangedListener(new TextWatcher() {
+        UIUtils.attachSearch(binding.etSearchProduct, this::loadProductData);
-            @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
-            @Override public void onTextChanged(CharSequence s, int start, int before, int count) {
-                loadProductData();
-            }
-            @Override public void afterTextChanged(Editable s) {}
-        });
     }
 
     /**

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

@@ -1,8 +1,6 @@
 package com.example.petstoremobile.fragments.listfragments;
 
 import android.os.Bundle;
-import android.text.Editable;
-import android.text.TextWatcher;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -22,10 +20,10 @@ import com.example.petstoremobile.databinding.FragmentProductSupplierBinding;
 import com.example.petstoremobile.dtos.ProductDTO;
 import com.example.petstoremobile.dtos.ProductSupplierDTO;
 import com.example.petstoremobile.dtos.SupplierDTO;
-import com.example.petstoremobile.fragments.ListFragment;
 import com.example.petstoremobile.utils.BulkDeleteHandler;
 import com.example.petstoremobile.utils.Resource;
 import com.example.petstoremobile.utils.SpinnerUtils;
+import com.example.petstoremobile.utils.UIUtils;
 import com.example.petstoremobile.viewmodels.ProductSupplierViewModel;
 import com.example.petstoremobile.viewmodels.ProductViewModel;
 import com.example.petstoremobile.viewmodels.SupplierViewModel;
@@ -79,15 +77,7 @@ public class ProductSupplierFragment extends Fragment
 
         binding.fabAddPS.setOnClickListener(v -> openDetail(-1));
 
-        binding.btnHamburgerPS.setOnClickListener(v -> {
+        UIUtils.setupHamburgerMenu(binding.btnHamburgerPS, this);
-            Fragment parent = getParentFragment();
-            if (parent != null) {
-                Fragment grandParent = parent.getParentFragment();
-                if (grandParent instanceof ListFragment) {
-                    ((ListFragment) grandParent).openDrawer();
-                }
-            }
-        });
 
         return binding.getRoot();
     }
@@ -125,20 +115,8 @@ public class ProductSupplierFragment extends Fragment
      * Sets up the filter toggle button to show/hide the filter layout.
      */
     private void setupFilterToggle() {
-        binding.btnToggleFilter.setOnClickListener(v -> {
+        UIUtils.setupFilterToggle(binding.btnToggleFilter, binding.layoutFilter, binding.etSearchPS,
-            if (binding.layoutFilter.getVisibility() == View.GONE) {
+                binding.spinnerProduct, binding.spinnerSupplier);
-                binding.layoutFilter.setVisibility(View.VISIBLE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_close_clear_cancel);
-            } else {
-                binding.layoutFilter.setVisibility(View.GONE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_search);
-
-                // Reset filters when closing
-                binding.etSearchPS.setText("");
-                binding.spinnerProduct.setSelection(0);
-                binding.spinnerSupplier.setSelection(0);
-            }
-        });
     }
 
     /**
@@ -154,13 +132,7 @@ public class ProductSupplierFragment extends Fragment
      * Configures the search bar for filtering.
      */
     private void setupSearch() {
-        binding.etSearchPS.addTextChangedListener(new TextWatcher() {
+        UIUtils.attachSearch(binding.etSearchPS, this::loadData);
-            @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
-            @Override public void onTextChanged(CharSequence s, int start, int before, int count) {
-                loadData();
-            }
-            @Override public void afterTextChanged(Editable s) {}
-        });
     }
 
     /**

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

@@ -1,8 +1,6 @@
 package com.example.petstoremobile.fragments.listfragments;
 
 import android.os.Bundle;
-import android.text.Editable;
-import android.text.TextWatcher;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -21,9 +19,9 @@ import com.example.petstoremobile.adapters.PurchaseOrderAdapter;
 import com.example.petstoremobile.databinding.FragmentPurchaseOrderBinding;
 import com.example.petstoremobile.dtos.PurchaseOrderDTO;
 import com.example.petstoremobile.dtos.StoreDTO;
-import com.example.petstoremobile.fragments.ListFragment;
 import com.example.petstoremobile.utils.Resource;
 import com.example.petstoremobile.utils.SpinnerUtils;
+import com.example.petstoremobile.utils.UIUtils;
 import com.example.petstoremobile.viewmodels.PurchaseOrderViewModel;
 import com.example.petstoremobile.viewmodels.StoreViewModel;
 
@@ -67,15 +65,7 @@ public class PurchaseOrderFragment extends Fragment
         setupSwipeRefresh();
         setupFilterToggle();
 
-        binding.btnHamburgerPO.setOnClickListener(v -> {
+        UIUtils.setupHamburgerMenu(binding.btnHamburgerPO, this);
-            Fragment parent = getParentFragment();
-            if (parent != null) {
-                Fragment grandParent = parent.getParentFragment();
-                if (grandParent instanceof ListFragment) {
-                    ((ListFragment) grandParent).openDrawer();
-                }
-            }
-        });
 
         return binding.getRoot();
     }
@@ -100,32 +90,14 @@ public class PurchaseOrderFragment extends Fragment
      * Sets up the filter toggle button to show/hide the filter layout.
      */
     private void setupFilterToggle() {
-        binding.btnToggleFilter.setOnClickListener(v -> {
+        UIUtils.setupFilterToggle(binding.btnToggleFilter, binding.layoutFilter, binding.etSearchPO, binding.spinnerStore);
-            if (binding.layoutFilter.getVisibility() == View.GONE) {
-                binding.layoutFilter.setVisibility(View.VISIBLE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_close_clear_cancel);
-            } else {
-                binding.layoutFilter.setVisibility(View.GONE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_search);
-
-                // Reset filters when closing
-                binding.etSearchPO.setText("");
-                binding.spinnerStore.setSelection(0);
-            }
-        });
     }
 
     /**
      * Configures the search bar for filtering.
      */
     private void setupSearch() {
-        binding.etSearchPO.addTextChangedListener(new TextWatcher() {
+        UIUtils.attachSearch(binding.etSearchPO, this::loadData);
-            @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
-            @Override public void onTextChanged(CharSequence s, int start, int before, int count) {
-                loadData();
-            }
-            @Override public void afterTextChanged(Editable s) {}
-        });
     }
 
     /**

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

@@ -7,19 +7,23 @@ import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
 import androidx.recyclerview.widget.LinearLayoutManager;
-import android.text.Editable;
+import androidx.recyclerview.widget.RecyclerView;
-import android.text.TextWatcher;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Toast;
 
 import com.example.petstoremobile.R;
 import com.example.petstoremobile.adapters.SaleAdapter;
 import com.example.petstoremobile.databinding.FragmentSaleBinding;
 import com.example.petstoremobile.dtos.SaleDTO;
-import com.example.petstoremobile.fragments.ListFragment;
+import com.example.petstoremobile.dtos.StoreDTO;
 import com.example.petstoremobile.utils.Resource;
+import com.example.petstoremobile.utils.SpinnerUtils;
+import com.example.petstoremobile.utils.UIUtils;
 import com.example.petstoremobile.viewmodels.SaleViewModel;
+import com.example.petstoremobile.viewmodels.StoreViewModel;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -29,11 +33,20 @@ import dagger.hilt.android.AndroidEntryPoint;
 @AndroidEntryPoint
 public class SaleFragment extends Fragment implements SaleAdapter.OnSaleClickListener {
 
+    private static final String TAG = "SaleFragment";
+    private static final int PAGE_SIZE = 200;
+
     private FragmentSaleBinding binding;
-    private List<SaleDTO> saleList = new ArrayList<>();
+    private final List<SaleDTO> saleList = new ArrayList<>();
-    private List<SaleDTO> filteredList = new ArrayList<>();
+    private final List<StoreDTO> storeList = new ArrayList<>();
     private SaleAdapter adapter;
     private SaleViewModel saleViewModel;
+    private StoreViewModel storeViewModel;
+
+    // Pagination
+    private int currentPage = 0;
+    private boolean isLastPage = false;
+    private boolean isLoading = false;
 
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
@@ -46,21 +59,17 @@ public class SaleFragment extends Fragment implements SaleAdapter.OnSaleClickLis
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
         saleViewModel = new ViewModelProvider(this).get(SaleViewModel.class);
+        storeViewModel = new ViewModelProvider(this).get(StoreViewModel.class);
 
         setupRecyclerView();
         setupSearch();
+        setupStoreFilter();
+        setupPaymentMethodFilter();
         setupSwipeRefresh();
-        loadSales();
+        setupFilterToggle();
+        loadSales(true);
 
-        binding.btnHamburger.setOnClickListener(v -> {
+        UIUtils.setupHamburgerMenu(binding.btnHamburger, this);
-            Fragment parent = getParentFragment();
-            if (parent != null) {
-                Fragment grandParent = parent.getParentFragment();
-                if (grandParent instanceof ListFragment) {
-                    ((ListFragment) grandParent).openDrawer();
-                }
-            }
-        });
 
         binding.fabAddSale.setOnClickListener(v ->
                 NavHostFragment.findNavController(this).navigate(R.id.nav_sale_detail));
@@ -69,6 +78,37 @@ public class SaleFragment extends Fragment implements SaleAdapter.OnSaleClickLis
                 NavHostFragment.findNavController(this).navigate(R.id.nav_refund));
     }
 
+    @Override
+    public void onResume() {
+        super.onResume();
+        loadStoreData();
+    }
+
+    private void setupFilterToggle() {
+        UIUtils.setupFilterToggle(binding.btnToggleFilter, binding.layoutFilter, binding.etSearchSale, 
+                binding.spinnerPaymentMethod, binding.spinnerStore);
+    }
+
+    private void setupStoreFilter() {
+        SpinnerUtils.setupFilterSpinner(binding.spinnerStore, () -> loadSales(true));
+    }
+
+    private void loadStoreData() {
+        storeViewModel.getAllStores(0, 100).observe(getViewLifecycleOwner(), resource -> {
+            if (resource != null && resource.status == Resource.Status.SUCCESS && resource.data != null) {
+                storeList.clear();
+                storeList.addAll(resource.data.getContent());
+                SpinnerUtils.populateWhiteSpinner(requireContext(), binding.spinnerStore, storeList,
+                        StoreDTO::getStoreName, "Stores", null, StoreDTO::getStoreId);
+            }
+        });
+    }
+
+    private void setupPaymentMethodFilter() {
+        String[] paymentMethods = {"Payments", "Cash", "Card"};
+        SpinnerUtils.setupStringFilterSpinner(requireContext(), binding.spinnerPaymentMethod, paymentMethods, () -> loadSales(true));
+    }
+
     @Override
     public void onDestroyView() {
         super.onDestroyView();
@@ -76,61 +116,91 @@ public class SaleFragment extends Fragment implements SaleAdapter.OnSaleClickLis
     }
 
     private void setupRecyclerView() {
-        adapter = new SaleAdapter(filteredList, this);
+        adapter = new SaleAdapter(saleList, this);
         binding.recyclerViewSales.setLayoutManager(new LinearLayoutManager(getContext()));
         binding.recyclerViewSales.setAdapter(adapter);
+
+        binding.recyclerViewSales.addOnScrollListener(new RecyclerView.OnScrollListener() {
+            @Override
+            public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
+                if (dy <= 0) return;
+                LinearLayoutManager lm = (LinearLayoutManager) binding.recyclerViewSales.getLayoutManager();
+                if (lm != null) {
+                    int visible = lm.getChildCount();
+                    int total = lm.getItemCount();
+                    int firstVis = lm.findFirstVisibleItemPosition();
+                    if (!isLoading && !isLastPage && (visible + firstVis) >= total - 3) {
+                        loadSales(false);
+                    }
+                }
+            }
+        });
     }
 
     private void setupSearch() {
-        binding.etSearchSale.addTextChangedListener(new TextWatcher() {
+        UIUtils.attachSearch(binding.etSearchSale, () -> loadSales(true));
-            @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
-            @Override public void afterTextChanged(Editable s) {}
-            @Override
-            public void onTextChanged(CharSequence s, int start, int before, int count) {
-                filterSales(s.toString());
-            }
-        });
-    }
-
-    private void filterSales(String query) {
-        filteredList.clear();
-        if (query.isEmpty()) {
-            filteredList.addAll(saleList);
-        } else {
-            String lower = query.toLowerCase();
-            for (SaleDTO s : saleList) {
-                if ((s.getEmployeeName() != null && s.getEmployeeName().toLowerCase().contains(lower))
-                        || (s.getSaleDate() != null && s.getSaleDate().toLowerCase().contains(lower))
-                        || (s.getPaymentMethod() != null && s.getPaymentMethod().toLowerCase().contains(lower))
-                        || (s.getSaleId() != null && String.valueOf(s.getSaleId()).contains(lower))) {
-                    filteredList.add(s);
-                }
-            }
-        }
-        if (adapter != null) adapter.notifyDataSetChanged();
     }
 
     private void setupSwipeRefresh() {
-        binding.swipeRefreshSale.setOnRefreshListener(() -> {
+        binding.swipeRefreshSale.setOnRefreshListener(() -> loadSales(true));
-            loadSales();
-        });
     }
 
-    private void loadSales() {
+    private void loadSales(boolean reset) {
-        saleViewModel.getAllSales(0, 200).observe(getViewLifecycleOwner(), resource -> {
+        if (isLoading) return;
-            binding.swipeRefreshSale.setRefreshing(false);
+
-            if (resource.status == Resource.Status.SUCCESS && resource.data != null) {
+        if (reset) {
-                saleList.clear();
+            currentPage = 0;
-                saleList.addAll(resource.data.getContent());
+            isLastPage = false;
-                filterSales(binding.etSearchSale.getText() != null
+        }
-                        ? binding.etSearchSale.getText().toString() : "");
+
+        String query = binding.etSearchSale != null ? binding.etSearchSale.getText().toString().trim() : "";
+        if (query.isEmpty()) query = null;
+
+        String paymentMethod = null;
+        if (binding.spinnerPaymentMethod.getSelectedItemPosition() > 0) {
+            paymentMethod = (String) binding.spinnerPaymentMethod.getSelectedItem();
+        }
+
+        Long storeId = null;
+        if (binding.spinnerStore.getSelectedItemPosition() > 0 && !storeList.isEmpty()) {
+            storeId = storeList.get(binding.spinnerStore.getSelectedItemPosition() - 1).getStoreId();
+        }
+
+        saleViewModel.getAllSales(currentPage, PAGE_SIZE, query, paymentMethod, storeId, "saleDate,desc").observe(getViewLifecycleOwner(), resource -> {
+            if (resource == null) return;
+
+            switch (resource.status) {
+                case LOADING:
+                    isLoading = true;
+                    binding.swipeRefreshSale.setRefreshing(true);
+                    break;
+                case SUCCESS:
+                    isLoading = false;
+                    binding.swipeRefreshSale.setRefreshing(false);
+                    if (resource.data != null) {
+                        if (reset) saleList.clear();
+                        saleList.addAll(resource.data.getContent());
+                        adapter.notifyDataSetChanged();
+                        isLastPage = resource.data.isLast();
+                        if (!isLastPage) currentPage++;
+                    }
+                    break;
+                case ERROR:
+                    isLoading = false;
+                    binding.swipeRefreshSale.setRefreshing(false);
+                    Log.e(TAG, "Error loading sales: " + resource.message);
+                    if (getContext() != null) {
+                        Toast.makeText(getContext(), "Failed to load sales: " + resource.message, Toast.LENGTH_SHORT).show();
+                    }
+                    break;
             }
         });
     }
 
     @Override
     public void onSaleClick(int position) {
-        SaleDTO sale = filteredList.get(position);
+        if (position < 0 || position >= saleList.size()) return;
+        SaleDTO sale = saleList.get(position);
         Bundle args = new Bundle();
         if (sale.getSaleId() != null) {
             args.putLong("saleId", sale.getSaleId());

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

@@ -1,8 +1,6 @@
 package com.example.petstoremobile.fragments.listfragments;
 
 import android.os.Bundle;
-import android.text.Editable;
-import android.text.TextWatcher;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -21,9 +19,8 @@ import com.example.petstoremobile.R;
 import com.example.petstoremobile.adapters.ServiceAdapter;
 import com.example.petstoremobile.databinding.FragmentServiceBinding;
 import com.example.petstoremobile.dtos.ServiceDTO;
-import com.example.petstoremobile.fragments.ListFragment;
 import com.example.petstoremobile.utils.BulkDeleteHandler;
-import com.example.petstoremobile.utils.Resource;
+import com.example.petstoremobile.utils.UIUtils;
 import com.example.petstoremobile.viewmodels.ServiceViewModel;
 
 import java.util.ArrayList;
@@ -77,15 +74,7 @@ public class ServiceFragment extends Fragment implements ServiceAdapter.OnServic
 
         binding.fabAddService.setOnClickListener(v -> openDetail(null));
 
-        binding.btnHamburger.setOnClickListener(v -> {
+        UIUtils.setupHamburgerMenu(binding.btnHamburger, this);
-            Fragment parent = getParentFragment();
-            if (parent != null) {
-                Fragment grandParent = parent.getParentFragment();
-                if (grandParent instanceof ListFragment) {
-                    ((ListFragment) grandParent).openDrawer();
-                }
-            }
-        });
 
         return binding.getRoot();
     }
@@ -113,31 +102,14 @@ public class ServiceFragment extends Fragment implements ServiceAdapter.OnServic
      * Sets up the filter toggle button to show/hide the filter layout.
      */
     private void setupFilterToggle() {
-        binding.btnToggleFilter.setOnClickListener(v -> {
+        UIUtils.setupFilterToggle(binding.btnToggleFilter, binding.layoutFilter, binding.etSearchService);
-            if (binding.layoutFilter.getVisibility() == View.GONE) {
-                binding.layoutFilter.setVisibility(View.VISIBLE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_close_clear_cancel);
-            } else {
-                binding.layoutFilter.setVisibility(View.GONE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_search);
-
-                // Reset filters when closing
-                binding.etSearchService.setText("");
-            }
-        });
     }
 
     /**
      * Sets up the search bar for filtering.
      */
     private void setupSearch() {
-        binding.etSearchService.addTextChangedListener(new TextWatcher() {
+        UIUtils.attachSearch(binding.etSearchService, () -> loadServices(true));
-            @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
-            @Override public void onTextChanged(CharSequence s, int start, int before, int count) {
-                loadServices(true);
-            }
-            @Override public void afterTextChanged(Editable s) {}
-        });
     }
 
     /**

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

@@ -1,85 +1,63 @@
 package com.example.petstoremobile.fragments.listfragments;
 
 import android.os.Bundle;
-import android.text.*;
 import android.util.Log;
 import android.view.*;
 import android.widget.*;
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
 import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
-import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
 import com.example.petstoremobile.R;
 import com.example.petstoremobile.adapters.EmployeeAdapter;
-import com.example.petstoremobile.api.RetrofitClient;
+import com.example.petstoremobile.databinding.FragmentStaffBinding;
 import com.example.petstoremobile.dtos.EmployeeDTO;
-import com.example.petstoremobile.dtos.PageResponse;
+import com.example.petstoremobile.utils.UIUtils;
-import com.example.petstoremobile.fragments.ListFragment;
+import com.example.petstoremobile.viewmodels.EmployeeViewModel;
-import com.google.android.material.floatingactionbutton.FloatingActionButton;
+import dagger.hilt.android.AndroidEntryPoint;
 import java.util.*;
-import retrofit2.*;
 
+@AndroidEntryPoint
 public class StaffFragment extends Fragment implements EmployeeAdapter.OnEmployeeClickListener {
 
+    private FragmentStaffBinding binding;
+    private EmployeeViewModel employeeViewModel;
     private List<EmployeeDTO> employeeList = new ArrayList<>();
     private List<EmployeeDTO> filteredList = new ArrayList<>();
     private EmployeeAdapter adapter;
-    private SwipeRefreshLayout swipeRefresh;
-    private EditText etSearch;
 
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.fragment_staff, container, false);
+        binding = FragmentStaffBinding.inflate(inflater, container, false);
-
+        employeeViewModel = new ViewModelProvider(this).get(EmployeeViewModel.class);
-        setupRecyclerView(view);
+        
-        setupSearch(view);
+        setupRecyclerView();
-        setupSwipeRefresh(view);
+        setupSearch();
+        setupSwipeRefresh();
         loadStaff();
 
-        FloatingActionButton fab = view.findViewById(R.id.fabAddStaff);
+        binding.fabAddStaff.setOnClickListener(v -> openDetail(-1));
-        fab.setOnClickListener(v -> openDetail(-1));
 
-        ImageButton hamburger = view.findViewById(R.id.btnHamburgerStaff);
+        UIUtils.setupHamburgerMenu(binding.btnHamburgerStaff, this);
-        hamburger.setOnClickListener(v -> openDrawer());
+        UIUtils.setupFilterToggle(binding.btnToggleFilterStaff, binding.layoutFilterStaff, binding.etSearchStaff);
 
-        return view;
+        return binding.getRoot();
     }
 
-    private void openDrawer() {
+    private void setupRecyclerView() {
-        Fragment parent = getParentFragment();
-        if (parent != null) {
-            Fragment grandParent = parent.getParentFragment();
-            if (grandParent instanceof ListFragment) {
-                ((ListFragment) grandParent).openDrawer();
-            }
-        }
-    }
-
-    private void setupRecyclerView(View view) {
-        RecyclerView rv = view.findViewById(R.id.recyclerViewStaff);
         adapter = new EmployeeAdapter(filteredList, this);
-        rv.setLayoutManager(new LinearLayoutManager(getContext()));
+        binding.recyclerViewStaff.setLayoutManager(new LinearLayoutManager(getContext()));
-        rv.setAdapter(adapter);
+        binding.recyclerViewStaff.setAdapter(adapter);
     }
 
-    private void setupSearch(View view) {
+    private void setupSearch() {
-        etSearch = view.findViewById(R.id.etSearchStaff);
+        UIUtils.attachSearch(binding.etSearchStaff, () -> filter(binding.etSearchStaff.getText().toString()));
-        etSearch.addTextChangedListener(new TextWatcher() {
-            public void beforeTextChanged(CharSequence s, int a, int b, int c) {}
-            public void afterTextChanged(Editable s) {}
-            public void onTextChanged(CharSequence s, int a, int b, int c) {
-                filter(s.toString());
-            }
-        });
     }
 
-    private void setupSwipeRefresh(View view) {
+    private void setupSwipeRefresh() {
-        swipeRefresh = view.findViewById(R.id.swipeRefreshStaff);
+        binding.swipeRefreshStaff.setOnRefreshListener(this::loadStaff);
-        swipeRefresh.setOnRefreshListener(this::loadStaff);
     }
 
     private void filter(String query) {
@@ -101,26 +79,31 @@ public class StaffFragment extends Fragment implements EmployeeAdapter.OnEmploye
     }
 
     private void loadStaff() {
-        if (swipeRefresh != null) swipeRefresh.setRefreshing(true);
+        binding.swipeRefreshStaff.setRefreshing(true);
-        RetrofitClient.getEmployeeApi(requireContext()).getAllEmployees(0, 100)
+        employeeViewModel.getAllEmployees(0, 100).observe(getViewLifecycleOwner(), resource -> {
-                .enqueue(new Callback<PageResponse<EmployeeDTO>>() {
+            if (resource != null) {
-                    public void onResponse(Call<PageResponse<EmployeeDTO>> c,
+                switch (resource.status) {
-                                           Response<PageResponse<EmployeeDTO>> r) {
+                    case SUCCESS:
-                        if (swipeRefresh != null) swipeRefresh.setRefreshing(false);
+                        binding.swipeRefreshStaff.setRefreshing(false);
-                        if (r.isSuccessful() && r.body() != null) {
+                        if (resource.data != null) {
                             employeeList.clear();
-                            employeeList.addAll(r.body().getContent());
+                            employeeList.addAll(resource.data.getContent());
-                            filter(etSearch != null ? etSearch.getText().toString() : "");
+                            filter(binding != null ? binding.etSearchStaff.getText().toString() : "");
-                        } else {
+                        }
-                            Toast.makeText(getContext(), "Failed to load staff",
+                        break;
+                    case ERROR:
+                        binding.swipeRefreshStaff.setRefreshing(false);
+                        if (getContext() != null) {
+                            Toast.makeText(getContext(), resource.message != null ? resource.message : "Failed to load staff",
                                     Toast.LENGTH_SHORT).show();
                         }
-                    }
+                        break;
-                    public void onFailure(Call<PageResponse<EmployeeDTO>> c, Throwable t) {
+                    case LOADING:
-                        if (swipeRefresh != null) swipeRefresh.setRefreshing(false);
+                        binding.swipeRefreshStaff.setRefreshing(true);
-                        Log.e("StaffFragment", t.getMessage());
+                        break;
-                    }
+                }
-                });
+            }
+        });
     }
 
     private void openDetail(int position) {
@@ -144,4 +127,10 @@ public class StaffFragment extends Fragment implements EmployeeAdapter.OnEmploye
     public void onEmployeeClick(int position) {
         openDetail(position);
     }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
 }

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

@@ -9,8 +9,6 @@ import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
 import androidx.recyclerview.widget.LinearLayoutManager;
 
-import android.text.Editable;
-import android.text.TextWatcher;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -21,9 +19,9 @@ import com.example.petstoremobile.R;
 import com.example.petstoremobile.adapters.SupplierAdapter;
 import com.example.petstoremobile.databinding.FragmentSupplierBinding;
 import com.example.petstoremobile.dtos.SupplierDTO;
-import com.example.petstoremobile.fragments.ListFragment;
 import com.example.petstoremobile.utils.BulkDeleteHandler;
 import com.example.petstoremobile.utils.Resource;
+import com.example.petstoremobile.utils.UIUtils;
 import com.example.petstoremobile.viewmodels.SupplierViewModel;
 
 import java.util.ArrayList;
@@ -67,16 +65,7 @@ public class SupplierFragment extends Fragment implements SupplierAdapter.OnSupp
         //Add button to opens the add dialog
         binding.fabAddSupplier.setOnClickListener(v -> openSupplierDetails(-1));
 
-        //Make the hamburger button open the drawer from listFragment
+        UIUtils.setupHamburgerMenu(binding.btnHamburger, this);
-        binding.btnHamburger.setOnClickListener(v -> {
-            Fragment parent = getParentFragment();
-            if (parent != null) {
-                Fragment grandParent = parent.getParentFragment();
-                if (grandParent instanceof ListFragment) {
-                    ((ListFragment) grandParent).openDrawer();
-                }
-            }
-        });
 
         return binding.getRoot();
     }
@@ -104,31 +93,14 @@ public class SupplierFragment extends Fragment implements SupplierAdapter.OnSupp
      * Sets up the filter toggle button to show/hide the filter layout.
      */
     private void setupFilterToggle() {
-        binding.btnToggleFilter.setOnClickListener(v -> {
+        UIUtils.setupFilterToggle(binding.btnToggleFilter, binding.layoutFilter, binding.etSearchSupplier);
-            if (binding.layoutFilter.getVisibility() == View.GONE) {
-                binding.layoutFilter.setVisibility(View.VISIBLE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_close_clear_cancel);
-            } else {
-                binding.layoutFilter.setVisibility(View.GONE);
-                binding.btnToggleFilter.setImageResource(android.R.drawable.ic_menu_search);
-
-                // Reset search when closing
-                binding.etSearchSupplier.setText("");
-            }
-        });
     }
 
     /**
      * Configures the search bar for filtering.
      */
     private void setupSearch() {
-        binding.etSearchSupplier.addTextChangedListener(new TextWatcher() {
+        UIUtils.attachSearch(binding.etSearchSupplier, this::loadSupplierData);
-            @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
-            @Override public void onTextChanged(CharSequence s, int start, int before, int count) {
-                loadSupplierData();
-            }
-            @Override public void afterTextChanged(Editable s) {}
-        });
     }
 
     /**

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

@@ -415,7 +415,7 @@ public class AppointmentDetailFragment extends Fragment {
             } else if (errorMessage.toLowerCase().contains("not available")) {
                 showNoAvailabilityDialog();
             } else {
-                Toast.makeText(getContext(), "Operation failed", Toast.LENGTH_SHORT).show();
+                Toast.makeText(getContext(), errorMessage, Toast.LENGTH_SHORT).show();
             }
         } else {
             Toast.makeText(getContext(), "Something went wrong", Toast.LENGTH_SHORT).show();

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

@@ -220,6 +220,13 @@ public class PetDetailFragment extends Fragment {
             binding.tvPetId.setText("ID: " + petId);
             binding.tvPetId.setVisibility(View.VISIBLE);
             binding.btnDeletePet.setVisibility(View.VISIBLE);
+            
+            // Disable species and breed fields in edit mode
+            binding.etPetSpecies.setEnabled(false);
+            binding.etPetBreed.setEnabled(false);
+            binding.etPetSpecies.setAlpha(0.5f);
+            binding.etPetBreed.setAlpha(0.5f);
+            
             loadPetData();
         } else {
             // Pet is being added
@@ -229,6 +236,12 @@ public class PetDetailFragment extends Fragment {
             binding.tvPetId.setVisibility(View.GONE);
             binding.btnDeletePet.setVisibility(View.GONE);
             binding.btnSavePet.setText("Add");
+            
+            // Enable species and breed fields in edit mode
+            binding.etPetSpecies.setEnabled(true);
+            binding.etPetBreed.setEnabled(true);
+            binding.etPetSpecies.setAlpha(1.0f);
+            binding.etPetBreed.setAlpha(1.0f);
         }
     }
 
@@ -334,16 +347,20 @@ public class PetDetailFragment extends Fragment {
                 if ("Available".equalsIgnoreCase(status)) {
                     binding.spinnerCustomer.setSelection(0);
                     binding.spinnerCustomer.setEnabled(false);
+                    binding.spinnerCustomer.setAlpha(0.5f);
                 } else {
                     binding.spinnerCustomer.setEnabled(true);
+                    binding.spinnerCustomer.setAlpha(1.0f);
                 }
 
                 //Disable the store spinner if the status is "Owned"
                 if ("Owned".equalsIgnoreCase(status)) {
                     binding.spinnerStore.setSelection(0);
                     binding.spinnerStore.setEnabled(false);
+                    binding.spinnerStore.setAlpha(0.5f);
                 } else {
                     binding.spinnerStore.setEnabled(true);
+                    binding.spinnerStore.setAlpha(1.0f);
                 }
             }
 

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

@@ -11,6 +11,7 @@ import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
 
 import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.engine.DiskCacheStrategy;
 import com.example.petstoremobile.R;
 import com.example.petstoremobile.api.*;
 import com.example.petstoremobile.api.auth.TokenManager;
@@ -73,7 +74,11 @@ public class ProductDetailFragment extends Fragment {
             @Override
             public void onImagePicked(Uri uri) {
                 photoUri = uri;
-                Glide.with(ProductDetailFragment.this).load(uri).into(binding.ivProductImage);
+                Glide.with(ProductDetailFragment.this)
+                        .load(uri)
+                        .diskCacheStrategy(DiskCacheStrategy.NONE)
+                        .skipMemoryCache(true)
+                        .into(binding.ivProductImage);
                 hasImage = true;
                 isImageChanged = true;
                 isImageRemoved = false;

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

@@ -7,25 +7,22 @@ import android.view.*;
 import android.widget.*;
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
 import com.example.petstoremobile.R;
-import com.example.petstoremobile.api.RetrofitClient;
+import com.example.petstoremobile.databinding.FragmentRefundBinding;
 import com.example.petstoremobile.dtos.SaleDTO;
-import com.example.petstoremobile.dtos.PageResponse;
+import com.example.petstoremobile.viewmodels.SaleViewModel;
+import dagger.hilt.android.AndroidEntryPoint;
 import java.math.BigDecimal;
 import java.math.RoundingMode;
 import java.util.*;
-import retrofit2.*;
 
+@AndroidEntryPoint
 public class RefundFragment extends Fragment {
 
-    private EditText etSaleId;
+    private FragmentRefundBinding binding;
-    private Button btnLoadSale, btnProcessRefund, btnBack;
+    private SaleViewModel saleViewModel;
-    private TextView tvSaleInfo, tvRefundTotal;
-    private LinearLayout llOriginalItems, llRefundItems;
-    private LinearLayout cardOriginalItems, cardRefundItems, cardPayment;
-    private Spinner spinnerPayment;
-
     private SaleDTO currentSale;
     private List<SaleDTO> allSales = new ArrayList<>();
 
@@ -60,8 +57,9 @@ public class RefundFragment extends Fragment {
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.fragment_refund, container, false);
+        binding = FragmentRefundBinding.inflate(inflater, container, false);
-        initViews(view);
+        saleViewModel = new ViewModelProvider(this).get(SaleViewModel.class);
+        
         setupSpinner();
         loadAllSales();
 
@@ -69,59 +67,47 @@ public class RefundFragment extends Fragment {
         Bundle args = getArguments();
         if (args != null && args.containsKey("saleId")) {
             long saleId = args.getLong("saleId");
-            etSaleId.setText(String.valueOf(saleId));
+            binding.etRefundSaleId.setText(String.valueOf(saleId));
             // Auto-load after sales are fetched
         }
 
-        btnLoadSale.setOnClickListener(v -> loadSale());
+        binding.btnLoadSale.setOnClickListener(v -> loadSale());
-        btnProcessRefund.setOnClickListener(v -> processRefund());
+        binding.btnProcessRefund.setOnClickListener(v -> processRefund());
-        btnBack.setOnClickListener(v -> navigateBack());
+        binding.btnRefundBack.setOnClickListener(v -> navigateBack());
 
-        return view;
+        return binding.getRoot();
-    }
-
-    private void initViews(View v) {
-        etSaleId        = v.findViewById(R.id.etRefundSaleId);
-        btnLoadSale     = v.findViewById(R.id.btnLoadSale);
-        btnProcessRefund= v.findViewById(R.id.btnProcessRefund);
-        btnBack         = v.findViewById(R.id.btnRefundBack);
-        tvSaleInfo      = v.findViewById(R.id.tvSaleInfo);
-        tvRefundTotal   = v.findViewById(R.id.tvRefundTotal);
-        llOriginalItems = v.findViewById(R.id.llOriginalItems);
-        llRefundItems   = v.findViewById(R.id.llRefundItems);
-        cardOriginalItems = v.findViewById(R.id.cardOriginalItems);
-        cardRefundItems   = v.findViewById(R.id.cardRefundItems);
-        cardPayment       = v.findViewById(R.id.cardPayment);
-        spinnerPayment    = v.findViewById(R.id.spinnerRefundPayment);
     }
 
     private void setupSpinner() {
-        spinnerPayment.setAdapter(new ArrayAdapter<>(requireContext(),
+        binding.spinnerRefundPayment.setAdapter(new ArrayAdapter<>(requireContext(),
                 android.R.layout.simple_spinner_item, PAYMENT_METHODS));
     }
 
     private void loadAllSales() {
-        RetrofitClient.getSaleApi(requireContext()).getAllSales(0, 1000)
+        saleViewModel.getAllSales(0, 1000, null, null, null, "saleDate,desc")
-                .enqueue(new Callback<PageResponse<SaleDTO>>() {
+                .observe(getViewLifecycleOwner(), resource -> {
-                    public void onResponse(Call<PageResponse<SaleDTO>> c,
+                    if (resource != null) {
-                                           Response<PageResponse<SaleDTO>> r) {
+                        switch (resource.status) {
-                        if (r.isSuccessful() && r.body() != null) {
+                            case SUCCESS:
-                            allSales = r.body().getContent();
+                                if (resource.data != null) {
-                            // Auto-load if saleId was pre-filled
+                                    allSales = resource.data.getContent();
-                            Bundle args = getArguments();
+                                    // Auto-load if saleId was pre-filled
-                            if (args != null && args.containsKey("saleId")) {
+                                    Bundle args = getArguments();
-                                loadSale();
+                                    if (args != null && args.containsKey("saleId")) {
-                            }
+                                        loadSale();
+                                    }
+                                }
+                                break;
+                            case ERROR:
+                                Log.e("Refund", "Failed to load sales: " + resource.message);
+                                break;
                         }
                     }
-                    public void onFailure(Call<PageResponse<SaleDTO>> c, Throwable t) {
-                        Log.e("Refund", "Failed to load sales: " + t.getMessage());
-                    }
                 });
     }
 
     private void loadSale() {
-        String idStr = etSaleId.getText().toString().trim();
+        String idStr = binding.etRefundSaleId.getText().toString().trim();
         if (idStr.isEmpty()) {
             Toast.makeText(getContext(), "Enter a Sale ID", Toast.LENGTH_SHORT).show();
             return;
@@ -156,8 +142,8 @@ public class RefundFragment extends Fragment {
         currentSale = found;
 
         // Show sale info
-        tvSaleInfo.setVisibility(View.VISIBLE);
+        binding.tvSaleInfo.setVisibility(View.VISIBLE);
-        tvSaleInfo.setText("Sale #" + currentSale.getSaleId()
+        binding.tvSaleInfo.setText("Sale #" + currentSale.getSaleId()
                 + " | " + (currentSale.getSaleDate() != null
                 ? currentSale.getSaleDate().substring(0, 10) : "")
                 + " | Employee: " + (currentSale.getEmployeeName() != null
@@ -169,7 +155,7 @@ public class RefundFragment extends Fragment {
         if (currentSale.getPaymentMethod() != null) {
             for (int i = 0; i < PAYMENT_METHODS.length; i++) {
                 if (PAYMENT_METHODS[i].equalsIgnoreCase(currentSale.getPaymentMethod())) {
-                    spinnerPayment.setSelection(i); break;
+                    binding.spinnerRefundPayment.setSelection(i); break;
                 }
             }
         }
@@ -187,10 +173,10 @@ public class RefundFragment extends Fragment {
         refundCart.clear();
 
         // Show cards
-        cardOriginalItems.setVisibility(View.VISIBLE);
+        binding.cardOriginalItems.setVisibility(View.VISIBLE);
-        cardRefundItems.setVisibility(View.VISIBLE);
+        binding.cardRefundItems.setVisibility(View.VISIBLE);
-        cardPayment.setVisibility(View.VISIBLE);
+        binding.cardPayment.setVisibility(View.VISIBLE);
-        btnProcessRefund.setVisibility(View.VISIBLE);
+        binding.btnProcessRefund.setVisibility(View.VISIBLE);
 
         renderOriginalItems();
         renderRefundCart();
@@ -233,10 +219,10 @@ public class RefundFragment extends Fragment {
     }
 
     private void renderOriginalItems() {
-        llOriginalItems.removeAllViews();
+        binding.llOriginalItems.removeAllViews();
 
         // Header
-        addTableHeader(llOriginalItems);
+        addTableHeader(binding.llOriginalItems);
 
         for (RefundItem item : availableItems) {
             // Calculate pending in cart
@@ -254,23 +240,23 @@ public class RefundFragment extends Fragment {
                     true, // show add button
                     () -> showQuantityDialog(item)
             );
-            llOriginalItems.addView(row);
+            binding.llOriginalItems.addView(row);
         }
     }
 
     private void renderRefundCart() {
-        llRefundItems.removeAllViews();
+        binding.llRefundItems.removeAllViews();
 
         if (refundCart.isEmpty()) {
             TextView empty = new TextView(getContext());
             empty.setText("No items added to refund yet");
             empty.setTextColor(0xFF888780);
             empty.setTextSize(13f);
-            llRefundItems.addView(empty);
+            binding.llRefundItems.addView(empty);
             return;
         }
 
-        addTableHeader(llRefundItems);
+        addTableHeader(binding.llRefundItems);
 
         for (RefundItem item : refundCart) {
             LinearLayout row = buildItemRow(
@@ -285,11 +271,12 @@ public class RefundFragment extends Fragment {
                         updateRefundTotal();
                     }
             );
-            llRefundItems.addView(row);
+            binding.llRefundItems.addView(row);
         }
     }
 
     private void addTableHeader(LinearLayout parent) {
+        if (getContext() == null) return;
         LinearLayout header = new LinearLayout(getContext());
         header.setOrientation(LinearLayout.HORIZONTAL);
         header.setPadding(0, 0, 0, 8);
@@ -310,6 +297,7 @@ public class RefundFragment extends Fragment {
 
     private LinearLayout buildItemRow(String name, int qty, BigDecimal unitPrice,
                                       boolean isAdd, Runnable action) {
+        if (getContext() == null) return new LinearLayout(getContext());
         LinearLayout row = new LinearLayout(getContext());
         row.setOrientation(LinearLayout.HORIZONTAL);
         row.setGravity(android.view.Gravity.CENTER_VERTICAL);
@@ -428,7 +416,7 @@ public class RefundFragment extends Fragment {
     private void updateRefundTotal() {
         BigDecimal total = BigDecimal.ZERO;
         for (RefundItem item : refundCart) total = total.add(item.getTotal());
-        tvRefundTotal.setText("Refund Total: $" + total.setScale(2, RoundingMode.HALF_UP));
+        binding.tvRefundTotal.setText("Refund Total: $" + total.setScale(2, RoundingMode.HALF_UP));
     }
 
     private void processRefund() {
@@ -442,7 +430,7 @@ public class RefundFragment extends Fragment {
             return;
         }
 
-        String payment = PAYMENT_METHODS[spinnerPayment.getSelectedItemPosition()];
+        String payment = PAYMENT_METHODS[binding.spinnerRefundPayment.getSelectedItemPosition()];
 
         // Confirm dialog
         BigDecimal total = BigDecimal.ZERO;
@@ -478,33 +466,34 @@ public class RefundFragment extends Fragment {
         Log.d("REFUND", "Submitting refund for saleId=" + currentSale.getSaleId()
                 + " items=" + items.size());
 
-        RetrofitClient.getSaleApi(requireContext()).createSale(dto)
+        saleViewModel.createSale(dto).observe(getViewLifecycleOwner(), resource -> {
-                .enqueue(new Callback<SaleDTO>() {
+            if (resource != null) {
-                    public void onResponse(Call<SaleDTO> c, Response<SaleDTO> r) {
+                switch (resource.status) {
-                        if (r.isSuccessful() && r.body() != null) {
+                    case SUCCESS:
+                        if (resource.data != null) {
                             Toast.makeText(getContext(),
-                                    "Refund #" + r.body().getSaleId() + " processed successfully!",
+                                    "Refund #" + resource.data.getSaleId() + " processed successfully!",
                                     Toast.LENGTH_LONG).show();
                             navigateBack();
-                        } else {
-                            try {
-                                String err = r.errorBody().string();
-                                Log.e("REFUND", "Error: " + err);
-                                Toast.makeText(getContext(), "Error: " + err,
-                                        Toast.LENGTH_LONG).show();
-                            } catch (Exception e) {
-                                Log.e("REFUND", "Failed to read error");
-                            }
                         }
-                    }
+                        break;
-                    public void onFailure(Call<SaleDTO> c, Throwable t) {
+                    case ERROR:
-                        Log.e("REFUND", "Failure: " + t.getMessage());
+                        Log.e("REFUND", "Error: " + resource.message);
-                        Toast.makeText(getContext(), "Network error", Toast.LENGTH_SHORT).show();
+                        Toast.makeText(getContext(), "Error: " + resource.message,
-                    }
+                                Toast.LENGTH_LONG).show();
-                });
+                        break;
+                }
+            }
+        });
     }
 
     private void navigateBack() {
         NavHostFragment.findNavController(this).popBackStack();
     }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
 }

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

@@ -5,23 +5,28 @@ import android.util.Log;
 import android.view.*;
 import android.widget.*;
 import androidx.annotation.NonNull;
-import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
 import com.example.petstoremobile.R;
-import com.example.petstoremobile.api.*;
+import com.example.petstoremobile.databinding.FragmentSaleDetailBinding;
 import com.example.petstoremobile.dtos.*;
+import com.example.petstoremobile.viewmodels.*;
+import com.example.petstoremobile.utils.SpinnerUtils;
+import com.example.petstoremobile.utils.DialogUtils;
+import com.example.petstoremobile.utils.Resource;
+import dagger.hilt.android.AndroidEntryPoint;
 import java.math.BigDecimal;
 import java.util.*;
-import retrofit2.*;
 
+@AndroidEntryPoint
 public class SaleDetailFragment extends Fragment {
 
-    private TextView tvMode, tvSaleDetailId, tvTotal;
+    private FragmentSaleDetailBinding binding;
-    private Spinner spinnerStore, spinnerCustomer, spinnerPayment, spinnerProduct;
+    private SaleViewModel saleViewModel;
-    private EditText etQuantity;
+    private StoreViewModel storeViewModel;
-    private Button btnAddItem, btnSave, btnBack, btnRefund;
+    private CustomerViewModel customerViewModel;
-    private LinearLayout llItems;
+    private ProductViewModel productViewModel;
 
     private boolean viewOnly = false;
     private long saleId = -1;
@@ -31,13 +36,20 @@ public class SaleDetailFragment extends Fragment {
     private List<ProductDTO> productList = new ArrayList<>();
     private List<SaleDTO.SaleItemDTO> cartItems = new ArrayList<>();
 
-    private final String[] PAYMENT_METHODS = { "Cash", "Card" };
+    private final String[] PAYMENT_METHODS = { "Cash", "Card"};
 
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.fragment_sale_detail, container, false);
+        binding = FragmentSaleDetailBinding.inflate(inflater, container, false);
-        initViews(view);
+        
+        saleViewModel = new ViewModelProvider(this).get(SaleViewModel.class);
+        storeViewModel = new ViewModelProvider(this).get(StoreViewModel.class);
+        customerViewModel = new ViewModelProvider(this).get(CustomerViewModel.class);
+        productViewModel = new ViewModelProvider(this).get(ProductViewModel.class);
+
+        SpinnerUtils.setupStringSpinner(requireContext(), binding.spinnerPaymentMethod, PAYMENT_METHODS);
+
         handleArguments();
 
         if (!viewOnly) {
@@ -45,30 +57,11 @@ public class SaleDetailFragment extends Fragment {
             setupAddItem();
         }
 
-        btnBack.setOnClickListener(v -> navigateBack());
+        binding.btnSaleBack.setOnClickListener(v -> navigateBack());
-        btnSave.setOnClickListener(v -> saveSale());
+        binding.btnSaveSale.setOnClickListener(v -> saveSale());
-        btnRefund.setOnClickListener(v -> showRefundDialog());
+        binding.btnRefundSale.setOnClickListener(v -> showRefundDialog());
 
-        return view;
+        return binding.getRoot();
-    }
-
-    private void initViews(View v) {
-        tvMode = v.findViewById(R.id.tvSaleMode);
-        tvSaleDetailId = v.findViewById(R.id.tvSaleDetailId);
-        tvTotal = v.findViewById(R.id.tvSaleDetailTotal);
-        spinnerStore = v.findViewById(R.id.spinnerSaleStore);
-        spinnerCustomer = v.findViewById(R.id.spinnerSaleCustomer);
-        spinnerPayment = v.findViewById(R.id.spinnerPaymentMethod);
-        spinnerProduct = v.findViewById(R.id.spinnerSaleProduct);
-        etQuantity = v.findViewById(R.id.etSaleQuantity);
-        btnAddItem = v.findViewById(R.id.btnAddItem);
-        btnSave = v.findViewById(R.id.btnSaveSale);
-        btnBack = v.findViewById(R.id.btnSaleBack);
-        btnRefund = v.findViewById(R.id.btnRefundSale);
-        llItems = v.findViewById(R.id.llSaleItems);
-
-        spinnerPayment.setAdapter(new ArrayAdapter<>(requireContext(),
-                android.R.layout.simple_spinner_item, PAYMENT_METHODS));
     }
 
     private void handleArguments() {
@@ -76,31 +69,31 @@ public class SaleDetailFragment extends Fragment {
         if (a != null && a.containsKey("saleId")) {
             saleId = a.getLong("saleId");
             viewOnly = a.getBoolean("viewOnly", false);
-            tvMode.setText("Sale #" + saleId);
+            binding.tvSaleMode.setText("Sale #" + saleId);
-            tvSaleDetailId.setText("ID: " + saleId);
+            binding.tvSaleDetailId.setText("ID: " + saleId);
 
             // Show refund button for existing non-refund sales
             if (!a.getBoolean("isRefund", false)) {
-                btnRefund.setVisibility(View.VISIBLE);
+                binding.btnRefundSale.setVisibility(View.VISIBLE);
             }
 
             // Hide save and input controls for view only
             if (viewOnly) {
-                btnSave.setVisibility(View.GONE);
+                binding.btnSaveSale.setVisibility(View.GONE);
-                spinnerStore.setEnabled(false);
+                binding.spinnerSaleStore.setEnabled(false);
-                spinnerCustomer.setEnabled(false);
+                binding.spinnerSaleCustomer.setEnabled(false);
-                spinnerPayment.setEnabled(false);
+                binding.spinnerPaymentMethod.setEnabled(false);
-                spinnerProduct.setEnabled(false);
+                binding.llAddItemRow.setVisibility(View.GONE);
-                etQuantity.setEnabled(false);
+                binding.llExtraInfo.setVisibility(View.VISIBLE);
-                btnAddItem.setEnabled(false);
             }
 
             // Load sale details
             loadSaleDetails();
         } else {
-            tvMode.setText("New Sale");
+            binding.tvSaleMode.setText("New Sale");
-            tvSaleDetailId.setVisibility(View.GONE);
+            binding.tvSaleDetailId.setVisibility(View.GONE);
-            btnRefund.setVisibility(View.GONE);
+            binding.btnRefundSale.setVisibility(View.GONE);
+            binding.llExtraInfo.setVisibility(View.GONE);
         }
     }
 
@@ -111,105 +104,108 @@ public class SaleDetailFragment extends Fragment {
     }
 
     private void loadStores() {
-        // Hardcoded since store endpoint is admin only
+        storeViewModel.getAllStores(0, 50).observe(getViewLifecycleOwner(), resource -> {
-        storeList = new ArrayList<>();
+            if (resource != null && resource.status == Resource.Status.SUCCESS && resource.data != null) {
-        storeList.add(new StoreDTO(1L, "Downtown Branch"));
+                storeList = resource.data.getContent();
-        List<String> names = new ArrayList<>();
+                if (binding != null) {
-        names.add("-- Select Store --");
+                    SpinnerUtils.populateSpinner(requireContext(), binding.spinnerSaleStore, storeList,
-        names.add("Downtown Branch");
+                            StoreDTO::getStoreName, "-- Select Store --", -1L, StoreDTO::getStoreId);
-        spinnerStore.setAdapter(new ArrayAdapter<>(requireContext(),
+                }
-                android.R.layout.simple_spinner_item, names));
+            } else if (storeList.isEmpty()) {
+                storeList = Collections.singletonList(new StoreDTO(1L, "Downtown Branch"));
+                if (binding != null) {
+                    SpinnerUtils.populateSpinner(requireContext(), binding.spinnerSaleStore, storeList,
+                            StoreDTO::getStoreName, "-- Select Store --", -1L, StoreDTO::getStoreId);
+                }
+            }
+        });
     }
 
     private void loadCustomers() {
-        RetrofitClient.getCustomerApi(requireContext()).getAllCustomers(0, 200)
+        customerViewModel.getAllCustomers(0, 200).observe(getViewLifecycleOwner(), resource -> {
-                .enqueue(new Callback<PageResponse<CustomerDTO>>() {
+            if (resource != null && resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                    public void onResponse(Call<PageResponse<CustomerDTO>> c,
+                customerList = resource.data.getContent();
-                                           Response<PageResponse<CustomerDTO>> r) {
+                if (binding != null) {
-                        if (r.isSuccessful() && r.body() != null) {
+                    SpinnerUtils.populateSpinner(requireContext(), binding.spinnerSaleCustomer, customerList,
-                            customerList = r.body().getContent();
+                            CustomerDTO::getFullName, "-- No Customer --", -1L, CustomerDTO::getCustomerId);
-                            List<String> names = new ArrayList<>();
+                }
-                            names.add("-- No Customer --");
+            }
-                            for (CustomerDTO cu : customerList)
+        });
-                                names.add(cu.getFirstName() + " " + cu.getLastName());
-                            spinnerCustomer.setAdapter(new ArrayAdapter<>(requireContext(),
-                                    android.R.layout.simple_spinner_item, names));
-                        }
-                    }
-
-                    public void onFailure(Call<PageResponse<CustomerDTO>> c, Throwable t) {
-                        Log.e("SaleDetail", "Customer load failed: " + t.getMessage());
-                    }
-                });
     }
 
     private void loadProducts() {
-        RetrofitClient.getProductApi(requireContext()).getAllProducts(null, null, 0, 200, null)
+        productViewModel.getAllProducts(null, null, 0, 200, null).observe(getViewLifecycleOwner(), resource -> {
-                .enqueue(new Callback<PageResponse<ProductDTO>>() {
+            if (resource != null && resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                    public void onResponse(Call<PageResponse<ProductDTO>> c,
+                productList = resource.data.getContent();
-                                           Response<PageResponse<ProductDTO>> r) {
+                if (binding != null) {
-                        if (r.isSuccessful() && r.body() != null) {
+                    SpinnerUtils.populateSpinner(requireContext(), binding.spinnerSaleProduct, productList,
-                            productList = r.body().getContent();
+                            ProductDTO::getProdName, "Select Product", -1L, ProductDTO::getProdId);
-                            List<String> names = new ArrayList<>();
+                }
-                            names.add("-- Select Product --");
+            }
-                            for (ProductDTO p : productList)
+        });
-                                names.add(p.getProdName());
-                            spinnerProduct.setAdapter(new ArrayAdapter<>(requireContext(),
-                                    android.R.layout.simple_spinner_item, names));
-                        }
-                    }
-
-                    public void onFailure(Call<PageResponse<ProductDTO>> c, Throwable t) {
-                        Log.e("SaleDetail", "Product load failed: " + t.getMessage());
-                    }
-                });
     }
 
     private void loadSaleDetails() {
-        RetrofitClient.getSaleApi(requireContext()).getSaleById(saleId)
+        saleViewModel.getSaleById(saleId).observe(getViewLifecycleOwner(), resource -> {
-                .enqueue(new Callback<SaleDTO>() {
+            if (resource != null && resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                    public void onResponse(Call<SaleDTO> c, Response<SaleDTO> r) {
+                SaleDTO sale = resource.data;
-                        if (r.isSuccessful() && r.body() != null) {
+                if (binding != null) {
-                            SaleDTO sale = r.body();
+                    binding.tvSaleDetailTotal.setText("Total: $" + sale.getTotalAmount());
-                            tvTotal.setText("Total: $" + sale.getTotalAmount());
+                    binding.tvSaleSubtotal.setText("$" + (sale.getSubtotalAmount() != null ? sale.getSubtotalAmount() : sale.getTotalAmount()));
-                            // Display items
+                    
-                            if (sale.getItems() != null) {
+                    if (sale.getCouponDiscountAmount() != null && sale.getCouponDiscountAmount().compareTo(BigDecimal.ZERO) > 0) {
-                                llItems.removeAllViews();
+                        binding.llCouponDiscount.setVisibility(View.VISIBLE);
-                                for (SaleDTO.SaleItemDTO item : sale.getItems()) {
+                        binding.tvSaleCouponDiscount.setText("-$" + sale.getCouponDiscountAmount());
-                                    addItemRow(item.getProductName(),
+                    } else {
-                                            Math.abs(item.getQuantity()),
+                        binding.llCouponDiscount.setVisibility(View.GONE);
-                                            item.getUnitPrice());
-                                }
-                            }
-                        }
                     }
 
-                    public void onFailure(Call<SaleDTO> c, Throwable t) {
+                    if (sale.getEmployeeDiscountAmount() != null && sale.getEmployeeDiscountAmount().compareTo(BigDecimal.ZERO) > 0) {
-                        Log.e("SaleDetail", "Load failed: " + t.getMessage());
+                        binding.llEmployeeDiscount.setVisibility(View.VISIBLE);
+                        binding.tvSaleEmployeeDiscount.setText("-$" + sale.getEmployeeDiscountAmount());
+                    } else {
+                        binding.llEmployeeDiscount.setVisibility(View.GONE);
                     }
-                });
+
+                    binding.tvSaleChannel.setText(sale.getChannel() != null ? sale.getChannel() : "—");
+                    binding.tvSalePoints.setText(String.valueOf(sale.getPointsEarned() != null ? sale.getPointsEarned() : 0));
+
+                    SpinnerUtils.setSelectionByValue(binding.spinnerPaymentMethod, sale.getPaymentMethod());
+
+                    // Display items
+                    if (sale.getItems() != null) {
+                        binding.llSaleItems.removeAllViews();
+                        for (SaleDTO.SaleItemDTO item : sale.getItems()) {
+                            addItemRow(item.getProductName(),
+                                    Math.abs(item.getQuantity()),
+                                    item.getUnitPrice());
+                        }
+                    }
+                }
+            }
+        });
     }
 
     private void setupAddItem() {
-        btnAddItem.setOnClickListener(v -> {
+        binding.btnAddItem.setOnClickListener(v -> {
-            if (spinnerProduct.getSelectedItemPosition() == 0) {
+            if (binding.spinnerSaleProduct.getSelectedItemPosition() == 0) {
                 Toast.makeText(getContext(), "Select a product", Toast.LENGTH_SHORT).show();
                 return;
             }
-            String qtyStr = etQuantity.getText().toString().trim();
+            String qtyStr = binding.etSaleQuantity.getText().toString().trim();
             if (qtyStr.isEmpty()) {
-                etQuantity.setError("Enter quantity");
+                binding.etSaleQuantity.setError("Enter quantity");
                 return;
             }
             int qty;
             try {
                 qty = Integer.parseInt(qtyStr);
             } catch (Exception e) {
-                etQuantity.setError("Invalid quantity");
+                binding.etSaleQuantity.setError("Invalid quantity");
                 return;
             }
 
-            ProductDTO product = productList.get(spinnerProduct.getSelectedItemPosition() - 1);
+            ProductDTO product = productList.get(binding.spinnerSaleProduct.getSelectedItemPosition() - 1);
 
             // Check if product already in cart
             for (SaleDTO.SaleItemDTO existing : cartItems) {
@@ -223,11 +219,12 @@ public class SaleDetailFragment extends Fragment {
             cartItems.add(item);
             addItemRow(product.getProdName(), qty, product.getProdPrice());
             updateTotal();
-            etQuantity.setText("");
+            binding.etSaleQuantity.setText("");
         });
     }
 
     private void addItemRow(String name, int qty, BigDecimal price) {
+        if (getContext() == null) return;
         LinearLayout row = new LinearLayout(getContext());
         row.setOrientation(LinearLayout.HORIZONTAL);
         row.setPadding(0, 8, 0, 8);
@@ -250,28 +247,26 @@ public class SaleDetailFragment extends Fragment {
         row.addView(tvName);
         row.addView(tvQty);
         row.addView(tvPrice);
-        llItems.addView(row);
+        binding.llSaleItems.addView(row);
     }
 
     private void updateTotal() {
         BigDecimal total = BigDecimal.ZERO;
-        int productIdx = 0;
         for (SaleDTO.SaleItemDTO item : cartItems) {
-            if (productIdx < productList.size()) {
+            for (ProductDTO p : productList) {
-                for (ProductDTO p : productList) {
+                if (p.getProdId().equals(item.getProdId()) && p.getProdPrice() != null) {
-                    if (p.getProdId().equals(item.getProdId()) && p.getProdPrice() != null) {
+                    total = total.add(p.getProdPrice()
-                        total = total.add(p.getProdPrice()
+                            .multiply(BigDecimal.valueOf(item.getQuantity())));
-                                .multiply(BigDecimal.valueOf(item.getQuantity())));
+                    break;
-                        break;
-                    }
                 }
             }
         }
-        tvTotal.setText("Total: $" + total);
+        binding.tvSaleSubtotal.setText("$" + total);
+        binding.tvSaleDetailTotal.setText("Total: $" + total);
     }
 
     private void saveSale() {
-        if (spinnerStore.getSelectedItemPosition() == 0) {
+        if (binding.spinnerSaleStore.getSelectedItemPosition() == 0) {
             Toast.makeText(getContext(), "Select a store", Toast.LENGTH_SHORT).show();
             return;
         }
@@ -280,13 +275,13 @@ public class SaleDetailFragment extends Fragment {
             return;
         }
 
-        StoreDTO store = storeList.get(0); // only one store
+        StoreDTO store = storeList.get(binding.spinnerSaleStore.getSelectedItemPosition() - 1);
-        String payment = PAYMENT_METHODS[spinnerPayment.getSelectedItemPosition()];
+        String payment = PAYMENT_METHODS[binding.spinnerPaymentMethod.getSelectedItemPosition()];
 
         // Optional customer
         Long customerId = null;
-        if (spinnerCustomer.getSelectedItemPosition() > 0) {
+        if (binding.spinnerSaleCustomer.getSelectedItemPosition() > 0) {
-            customerId = customerList.get(spinnerCustomer.getSelectedItemPosition() - 1)
+            customerId = customerList.get(binding.spinnerSaleCustomer.getSelectedItemPosition() - 1)
                     .getCustomerId();
         }
 
@@ -298,71 +293,38 @@ public class SaleDetailFragment extends Fragment {
                 null,
                 customerId);
 
-        Log.d("SALE_SAVE", "storeId=" + store.getStoreId()
+        saleViewModel.createSale(dto).observe(getViewLifecycleOwner(), resource -> {
-                + " payment=" + payment
+            if (resource != null) {
-                + " items=" + cartItems.size()
+                switch (resource.status) {
-                + " customerId=" + customerId);
+                    case SUCCESS:
-
+                        Toast.makeText(getContext(), "Sale saved!", Toast.LENGTH_SHORT).show();
-        RetrofitClient.getSaleApi(requireContext()).createSale(dto)
+                        navigateBack();
-                .enqueue(new Callback<SaleDTO>() {
+                        break;
-                    public void onResponse(Call<SaleDTO> c, Response<SaleDTO> r) {
+                    case ERROR:
-                        if (r.isSuccessful()) {
+                        Log.e("SALE_SAVE", "Error: " + resource.message);
-                            Toast.makeText(getContext(), "Sale saved!", Toast.LENGTH_SHORT).show();
+                        DialogUtils.showInfoDialog(requireContext(), "Save Error", resource.message);
-                            navigateBack();
+                        break;
-                        } else {
+                }
-                            try {
+            }
-                                String err = r.errorBody().string();
+        });
-                                Log.e("SALE_SAVE", "Error: " + err);
-                                Toast.makeText(getContext(), "Error " + r.code() + ": " + err,
-                                        Toast.LENGTH_LONG).show();
-                            } catch (Exception e) {
-                                Log.e("SALE_SAVE", "Failed to read error");
-                            }
-                        }
-                    }
-
-                    public void onFailure(Call<SaleDTO> c, Throwable t) {
-                        Log.e("SALE_SAVE", "Failure: " + t.getMessage());
-                        Toast.makeText(getContext(), "Network error", Toast.LENGTH_SHORT).show();
-                    }
-                });
     }
 
     private void showRefundDialog() {
-        Bundle args = new Bundle();
+        DialogUtils.showConfirmDialog(requireContext(), "Process Refund", 
-        args.putLong("saleId", saleId);
+            "Are you sure you want to process a refund for this sale?", () -> {
-        NavHostFragment.findNavController(this).navigate(R.id.nav_refund, args);
+            Bundle args = new Bundle();
-    }
+            args.putLong("saleId", saleId);
-
+            NavHostFragment.findNavController(this).navigate(R.id.nav_refund, args);
-    private void submitRefund() {
+        });
-        RefundDTO refundDTO = new RefundDTO(saleId, "Refund requested from mobile app");
-        RetrofitClient.getRefundApi(requireContext()).createRefund(refundDTO)
-                .enqueue(new Callback<RefundDTO>() {
-                    public void onResponse(Call<RefundDTO> c, Response<RefundDTO> r) {
-                        if (r.isSuccessful()) {
-                            Toast.makeText(getContext(), "Refund request submitted!",
-                                    Toast.LENGTH_SHORT).show();
-                            btnRefund.setVisibility(View.GONE);
-                        } else {
-                            try {
-                                String err = r.errorBody().string();
-                                Log.e("REFUND", "Error: " + err);
-                                Toast.makeText(getContext(), "Error: " + err,
-                                        Toast.LENGTH_LONG).show();
-                            } catch (Exception e) {
-                                Log.e("REFUND", "Failed to read error");
-                            }
-                        }
-                    }
-
-                    public void onFailure(Call<RefundDTO> c, Throwable t) {
-                        Log.e("REFUND", "Failure: " + t.getMessage());
-                        Toast.makeText(getContext(), "Network error", Toast.LENGTH_SHORT).show();
-                    }
-                });
     }
 
     private void navigateBack() {
         NavHostFragment.findNavController(this).popBackStack();
     }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
 }

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

@@ -7,20 +7,19 @@ import android.widget.*;
 import androidx.annotation.NonNull;
 import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
 import com.example.petstoremobile.R;
-import com.example.petstoremobile.api.EmployeeApi;
+import com.example.petstoremobile.databinding.FragmentStaffDetailBinding;
-import com.example.petstoremobile.api.RetrofitClient;
 import com.example.petstoremobile.dtos.EmployeeDTO;
-import retrofit2.*;
+import com.example.petstoremobile.viewmodels.EmployeeViewModel;
+import dagger.hilt.android.AndroidEntryPoint;
 
+@AndroidEntryPoint
 public class StaffDetailFragment extends Fragment {
 
-    private TextView tvMode, tvStaffId;
+    private FragmentStaffDetailBinding binding;
-    private EditText etUsername, etPassword, etFirstName, etLastName, etEmail, etPhone;
+    private EmployeeViewModel employeeViewModel;
-    private Spinner spinnerRole, spinnerStatus;
-    private Button btnSave, btnDelete, btnBack;
-
     private long employeeId = -1;
     private boolean isEditing = false;
 
@@ -30,37 +29,22 @@ public class StaffDetailFragment extends Fragment {
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.fragment_staff_detail, container, false);
+        binding = FragmentStaffDetailBinding.inflate(inflater, container, false);
-        initViews(view);
+        employeeViewModel = new ViewModelProvider(this).get(EmployeeViewModel.class);
+        
         setupSpinners();
         handleArguments();
 
-        btnBack.setOnClickListener(v -> navigateBack());
+        binding.btnStaffBack.setOnClickListener(v -> navigateBack());
-        btnSave.setOnClickListener(v -> save());
+        binding.btnSaveStaff.setOnClickListener(v -> save());
-        btnDelete.setOnClickListener(v -> confirmDelete());
+        binding.btnDeleteStaff.setOnClickListener(v -> confirmDelete());
-        return view;
+        return binding.getRoot();
-    }
-
-    private void initViews(View v) {
-        tvMode        = v.findViewById(R.id.tvStaffMode);
-        tvStaffId     = v.findViewById(R.id.tvStaffId);
-        etUsername    = v.findViewById(R.id.etStaffUsername);
-        etPassword    = v.findViewById(R.id.etStaffPassword);
-        etFirstName   = v.findViewById(R.id.etStaffFirstName);
-        etLastName    = v.findViewById(R.id.etStaffLastName);
-        etEmail       = v.findViewById(R.id.etStaffEmail);
-        etPhone       = v.findViewById(R.id.etStaffPhone);
-        spinnerRole   = v.findViewById(R.id.spinnerStaffRole);
-        spinnerStatus = v.findViewById(R.id.spinnerStaffStatus);
-        btnSave       = v.findViewById(R.id.btnSaveStaff);
-        btnDelete     = v.findViewById(R.id.btnDeleteStaff);
-        btnBack       = v.findViewById(R.id.btnStaffBack);
     }
 
     private void setupSpinners() {
-        spinnerRole.setAdapter(new ArrayAdapter<>(requireContext(),
+        binding.spinnerStaffRole.setAdapter(new ArrayAdapter<>(requireContext(),
                 android.R.layout.simple_spinner_item, ROLES));
-        spinnerStatus.setAdapter(new ArrayAdapter<>(requireContext(),
+        binding.spinnerStaffStatus.setAdapter(new ArrayAdapter<>(requireContext(),
                 android.R.layout.simple_spinner_item, STATUSES));
     }
 
@@ -70,61 +54,61 @@ public class StaffDetailFragment extends Fragment {
             isEditing = true;
             employeeId = a.getLong("employeeId", -1);
 
-            tvMode.setText("Edit Staff Account");
+            binding.tvStaffMode.setText("Edit Staff Account");
-            tvStaffId.setText("ID: " + employeeId);
+            binding.tvStaffId.setText("ID: " + employeeId);
-            tvStaffId.setVisibility(View.VISIBLE);
+            binding.tvStaffId.setVisibility(View.VISIBLE);
-            etUsername.setText(a.getString("username", ""));
+            binding.etStaffUsername.setText(a.getString("username", ""));
-            etFirstName.setText(a.getString("firstName", ""));
+            binding.etStaffFirstName.setText(a.getString("firstName", ""));
-            etLastName.setText(a.getString("lastName", ""));
+            binding.etStaffLastName.setText(a.getString("lastName", ""));
-            etEmail.setText(a.getString("email", ""));   // ← was showing fullName
+            binding.etStaffEmail.setText(a.getString("email", ""));
-            etPhone.setText(a.getString("phone", ""));
+            binding.etStaffPhone.setText(a.getString("phone", ""));
-            btnDelete.setVisibility(View.VISIBLE);
+            binding.btnDeleteStaff.setVisibility(View.VISIBLE);
 
             // Pre-fill role
             String role = a.getString("role", "STAFF");
             for (int i = 0; i < ROLES.length; i++) {
                 if (ROLES[i].equals(role)) {
-                    spinnerRole.setSelection(i);
+                    binding.spinnerStaffRole.setSelection(i);
                     break;
                 }
             }
 
             // Pre-fill status
             boolean active = a.getBoolean("active", true);
-            spinnerStatus.setSelection(active ? 0 : 1);
+            binding.spinnerStaffStatus.setSelection(active ? 0 : 1);
 
         } else {
             isEditing = false;
             employeeId = -1;
-            tvMode.setText("Add Staff Account");
+            binding.tvStaffMode.setText("Add Staff Account");
-            btnDelete.setVisibility(View.GONE);
+            binding.btnDeleteStaff.setVisibility(View.GONE);
-            tvStaffId.setVisibility(View.GONE);
+            binding.tvStaffId.setVisibility(View.GONE);
         }
     }
 
 
     private void save() {
-        String username  = etUsername.getText() != null ? etUsername.getText().toString().trim() : "";
+        String username  = binding.etStaffUsername.getText() != null ? binding.etStaffUsername.getText().toString().trim() : "";
-        String password  = etPassword.getText() != null ? etPassword.getText().toString().trim() : "";
+        String password  = binding.etStaffPassword.getText() != null ? binding.etStaffPassword.getText().toString().trim() : "";
-        String firstName = etFirstName.getText() != null ? etFirstName.getText().toString().trim() : "";
+        String firstName = binding.etStaffFirstName.getText() != null ? binding.etStaffFirstName.getText().toString().trim() : "";
-        String lastName  = etLastName.getText() != null ? etLastName.getText().toString().trim() : "";
+        String lastName  = binding.etStaffLastName.getText() != null ? binding.etStaffLastName.getText().toString().trim() : "";
-        String email     = etEmail.getText() != null ? etEmail.getText().toString().trim() : "";
+        String email     = binding.etStaffEmail.getText() != null ? binding.etStaffEmail.getText().toString().trim() : "";
-        String phone     = etPhone.getText() != null ? etPhone.getText().toString().trim() : "";
+        String phone     = binding.etStaffPhone.getText() != null ? binding.etStaffPhone.getText().toString().trim() : "";
-        String role      = ROLES[spinnerRole.getSelectedItemPosition()];
+        String role      = ROLES[binding.spinnerStaffRole.getSelectedItemPosition()];
-        boolean active   = spinnerStatus.getSelectedItemPosition() == 0;
+        boolean active   = binding.spinnerStaffStatus.getSelectedItemPosition() == 0;
 
         // Validation
-        if (username.isEmpty()) { etUsername.setError("Required"); return; }
+        if (username.isEmpty()) { binding.etStaffUsername.setError("Required"); return; }
         if (!isEditing && password.isEmpty()) {
-            etPassword.setError("Required for new account"); return;
+            binding.etStaffPassword.setError("Required for new account"); return;
         }
         if (!isEditing && password.length() < 6) {
-            etPassword.setError("At least 6 characters"); return;
+            binding.etStaffPassword.setError("At least 6 characters"); return;
         }
-        if (firstName.isEmpty()) { etFirstName.setError("Required"); return; }
+        if (firstName.isEmpty()) { binding.etStaffFirstName.setError("Required"); return; }
-        if (lastName.isEmpty()) { etLastName.setError("Required"); return; }
+        if (lastName.isEmpty()) { binding.etStaffLastName.setError("Required"); return; }
-        if (email.isEmpty()) { etEmail.setError("Required"); return; }
+        if (email.isEmpty()) { binding.etStaffEmail.setError("Required"); return; }
-        if (phone.isEmpty()) { etPhone.setError("Required"); return; }
+        if (phone.isEmpty()) { binding.etStaffPhone.setError("Required"); return; }
 
         EmployeeDTO dto = new EmployeeDTO(
                 username,
@@ -137,41 +121,35 @@ public class StaffDetailFragment extends Fragment {
                 active
         );
 
-        Log.d("STAFF_SAVE", "isEditing=" + isEditing
-                + " employeeId=" + employeeId
-                + " username=" + username);
-
-        EmployeeApi api = RetrofitClient.getEmployeeApi(requireContext());
         if (isEditing && employeeId > 0) {
-            api.updateEmployee(employeeId, dto).enqueue(simpleCallback("Updated successfully"));
+            employeeViewModel.updateEmployee(employeeId, dto).observe(getViewLifecycleOwner(), resource -> {
-        } else {
+                if (resource != null) {
-            api.createEmployee(dto).enqueue(simpleCallback("Staff account created"));
+                    switch (resource.status) {
-        }
+                        case SUCCESS:
-    }
+                            Toast.makeText(getContext(), "Updated successfully", Toast.LENGTH_SHORT).show();
-
+                            navigateBack();
-    private Callback<EmployeeDTO> simpleCallback(String msg) {
+                            break;
-        return new Callback<>() {
+                        case ERROR:
-            public void onResponse(Call<EmployeeDTO> c, Response<EmployeeDTO> r) {
+                            Toast.makeText(getContext(), "Error: " + resource.message, Toast.LENGTH_LONG).show();
-                Log.d("STAFF_SAVE", "Response: " + r.code());
+                            break;
-                if (r.isSuccessful()) {
-                    Toast.makeText(getContext(), msg, Toast.LENGTH_SHORT).show();
-                    navigateBack();
-                } else {
-                    try {
-                        String err = r.errorBody().string();
-                        Log.e("STAFF_SAVE", "Error: " + err);
-                        Toast.makeText(getContext(), "Error " + r.code() + ": " + err,
-                                Toast.LENGTH_LONG).show();
-                    } catch (Exception e) {
-                        Log.e("STAFF_SAVE", "Failed to read error");
                     }
                 }
-            }
+            });
-            public void onFailure(Call<EmployeeDTO> c, Throwable t) {
+        } else {
-                Log.e("STAFF_SAVE", "Failure: " + t.getMessage());
+            employeeViewModel.createEmployee(dto).observe(getViewLifecycleOwner(), resource -> {
-                Toast.makeText(getContext(), "Network error", Toast.LENGTH_SHORT).show();
+                if (resource != null) {
-            }
+                    switch (resource.status) {
-        };
+                        case SUCCESS:
+                            Toast.makeText(getContext(), "Staff account created", Toast.LENGTH_SHORT).show();
+                            navigateBack();
+                            break;
+                        case ERROR:
+                            Toast.makeText(getContext(), "Error: " + resource.message, Toast.LENGTH_LONG).show();
+                            break;
+                    }
+                }
+            });
+        }
     }
 
     private void confirmDelete() {
@@ -179,21 +157,29 @@ public class StaffDetailFragment extends Fragment {
                 .setTitle("Delete Staff Account?")
                 .setMessage("This will permanently delete this staff account.")
                 .setPositiveButton("Yes", (d, w) ->
-                        RetrofitClient.getEmployeeApi(requireContext())
+                        employeeViewModel.deleteEmployee(employeeId).observe(getViewLifecycleOwner(), resource -> {
-                                .deleteEmployee(employeeId)
+                            if (resource != null) {
-                                .enqueue(new Callback<Void>() {
+                                switch (resource.status) {
-                                    public void onResponse(Call<Void> c, Response<Void> r) {
+                                    case SUCCESS:
                                         navigateBack();
-                                    }
+                                        break;
-                                    public void onFailure(Call<Void> c, Throwable t) {
+                                    case ERROR:
-                                        Toast.makeText(getContext(), "Delete failed",
+                                        Toast.makeText(getContext(), "Delete failed: " + resource.message,
                                                 Toast.LENGTH_SHORT).show();
-                                    }
+                                        break;
-                                }))
+                                }
+                            }
+                        }))
                 .setNegativeButton("No", null).show();
     }
 
     private void navigateBack() {
         NavHostFragment.findNavController(this).popBackStack();
     }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
 }

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

@@ -131,11 +131,30 @@ public class PetProfileFragment extends Fragment {
                     binding.tvPetPrice.setText("$0.00");
                 }
 
-                // Display owner name if available, otherwise show No Owner
+                String status = pet.getPetStatus();
-                if (pet.getCustomerName() != null && !pet.getCustomerName().isEmpty()) {
+
-                    binding.tvPetOwner.setText(pet.getCustomerName());
+                // Display owner name only if the pet is Adopted or Owned
+                if ("Adopted".equalsIgnoreCase(status) || "Owned".equalsIgnoreCase(status)) {
+                    binding.layoutPetOwner.setVisibility(View.VISIBLE);
+                    if (pet.getCustomerName() != null && !pet.getCustomerName().isEmpty()) {
+                        binding.tvPetOwner.setText(pet.getCustomerName());
+                    } else {
+                        binding.tvPetOwner.setText("No Owner");
+                    }
                 } else {
-                    binding.tvPetOwner.setText("No Owner");
+                    binding.layoutPetOwner.setVisibility(View.GONE);
+                }
+
+                // Display store name only if the pet is Adopted or Available
+                if ("Available".equalsIgnoreCase(status) || "Adopted".equalsIgnoreCase(status)) {
+                    binding.layoutPetStore.setVisibility(View.VISIBLE);
+                    if (pet.getStoreName() != null && !pet.getStoreName().isEmpty()) {
+                        binding.tvPetStore.setText(pet.getStoreName());
+                    } else {
+                        binding.tvPetStore.setText("No Store");
+                    }
+                } else {
+                    binding.layoutPetStore.setVisibility(View.GONE);
                 }
             } else if (resource.status == Resource.Status.ERROR) {
                 Toast.makeText(getContext(), "Failed to load pet data: " + resource.message, Toast.LENGTH_SHORT).show();

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

@@ -20,8 +20,8 @@ public class SaleRepository extends BaseRepository {
         this.saleApi = saleApi;
     }
 
-    public LiveData<Resource<PageResponse<SaleDTO>>> getAllSales(int page, int size) {
+    public LiveData<Resource<PageResponse<SaleDTO>>> getAllSales(int page, int size, String query, String paymentMethod, Long storeId, String sortBy) {
-        return executeCall(saleApi.getAllSales(page, size));
+        return executeCall(saleApi.getAllSales(page, size, query, paymentMethod, storeId, sortBy));
     }
 
     public LiveData<Resource<SaleDTO>> getSaleById(Long id) {

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

@@ -1,18 +1,76 @@
 package com.example.petstoremobile.utils;
 
 import android.telephony.PhoneNumberFormattingTextWatcher;
+import android.text.Editable;
 import android.text.InputFilter;
+import android.text.TextWatcher;
+import android.view.View;
 import android.widget.EditText;
+import android.widget.ImageButton;
+import android.widget.Spinner;
+
+import androidx.fragment.app.Fragment;
+import com.example.petstoremobile.fragments.ListFragment;
 
 /**
  * Utility class for shared UI component logic and formatting.
  */
 public class UIUtils {
     /**
-     * Formats an EditText for to phone format
+     * Formats an EditText to phone format.
      */
     public static void formatPhoneInput(EditText editText) {
         editText.addTextChangedListener(new PhoneNumberFormattingTextWatcher("CA"));
         editText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(14)});
     }
+
+    /**
+     * Sets up a toggle for a filter layout, including icon changes and field resets.
+     */
+    public static void setupFilterToggle(ImageButton btnToggle, View layoutFilter, EditText etSearch, Spinner... spinners) {
+        btnToggle.setOnClickListener(v -> {
+            boolean isVisible = layoutFilter.getVisibility() == View.VISIBLE;
+            layoutFilter.setVisibility(isVisible ? View.GONE : View.VISIBLE);
+            
+            // Use Android default icons or app-specific ones if available
+            btnToggle.setImageResource(isVisible ? 
+                    android.R.drawable.ic_menu_search : 
+                    android.R.drawable.ic_menu_close_clear_cancel);
+
+            if (isVisible) {
+                if (etSearch != null) etSearch.setText("");
+                for (Spinner spinner : spinners) {
+                    if (spinner != null) spinner.setSelection(0);
+                }
+            }
+        });
+    }
+
+    /**
+     * Simplifies setting up the hamburger menu to open the navigation drawer.
+     */
+    public static void setupHamburgerMenu(ImageButton btnHamburger, Fragment fragment) {
+        btnHamburger.setOnClickListener(v -> {
+            Fragment parent = fragment.getParentFragment();
+            if (parent != null) {
+                Fragment grandParent = parent.getParentFragment();
+                if (grandParent instanceof ListFragment) {
+                    ((ListFragment) grandParent).openDrawer();
+                }
+            }
+        });
+    }
+
+    /**
+     * Attaches a simplified TextWatcher to an EditText for search functionality.
+     */
+    public static void attachSearch(EditText etSearch, Runnable onQueryChanged) {
+        etSearch.addTextChangedListener(new TextWatcher() {
+            @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+            @Override public void onTextChanged(CharSequence s, int start, int before, int count) {
+                onQueryChanged.run();
+            }
+            @Override public void afterTextChanged(Editable s) {}
+        });
+    }
 }

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

@@ -21,8 +21,8 @@ public class SaleViewModel extends ViewModel {
         this.saleRepository = saleRepository;
     }
 
-    public LiveData<Resource<PageResponse<SaleDTO>>> getAllSales(int page, int size) {
+    public LiveData<Resource<PageResponse<SaleDTO>>> getAllSales(int page, int size, String query, String paymentMethod, Long storeId, String sortBy) {
-        return saleRepository.getAllSales(page, size);
+        return saleRepository.getAllSales(page, size, query, paymentMethod, storeId, sortBy);
     }
 
     public LiveData<Resource<SaleDTO>> getSaleById(Long id) {

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

@@ -222,13 +222,15 @@
             </LinearLayout>
 
             <LinearLayout
+                android:id="@+id/layoutPetOwner"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:orientation="vertical"
                 android:gravity="center"
                 android:background="@color/white"
                 android:layout_marginTop="16dp"
-                android:padding="16dp">
+                android:padding="16dp"
+                android:visibility="gone">
 
                 <TextView
                     android:layout_width="wrap_content"
@@ -250,6 +252,37 @@
 
             </LinearLayout>
 
+            <LinearLayout
+                android:id="@+id/layoutPetStore"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:gravity="center"
+                android:background="@color/white"
+                android:layout_marginTop="16dp"
+                android:padding="16dp"
+                android:visibility="gone">
+
+                <TextView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="STORE"
+                    android:textSize="11sp"
+                    android:textColor="#888888"
+                    android:textAllCaps="true"
+                    android:layout_marginBottom="4dp"/>
+
+                <TextView
+                    android:id="@+id/tvPetStore"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="No Store"
+                    android:textSize="20sp"
+                    android:textStyle="bold"
+                    android:textColor="@color/text_dark"/>
+
+            </LinearLayout>
+
         </LinearLayout>
 
     </ScrollView>

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

@@ -29,35 +29,112 @@
                 android:contentDescription="Open menu"/>
 
             <TextView
-                android:layout_width="match_parent"
+                android:layout_width="0dp"
                 android:layout_height="wrap_content"
+                android:layout_weight="1"
                 android:text="Sales"
                 android:textColor="@color/white"
                 android:textSize="20sp"
-                android:textStyle="bold"/>
+                android:textStyle="bold"
+                android:layout_marginStart="8dp"/>
+
+            <ImageButton
+                android:id="@+id/btnToggleFilter"
+                android:layout_width="48dp"
+                android:layout_height="48dp"
+                android:src="@android:drawable/ic_menu_search"
+                android:background="?attr/selectableItemBackgroundBorderless"
+                app:tint="@color/white"
+                android:contentDescription="Toggle filter"/>
 
         </LinearLayout>
 
-        <EditText
+        <LinearLayout
-            android:id="@+id/etSearchSale"
+            android:id="@+id/layoutFilter"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_margin="8dp"
+            android:orientation="vertical"
-            android:hint="Search by employee or store..."
+            android:paddingStart="12dp"
-            android:inputType="text"
+            android:paddingEnd="12dp"
-            android:drawableStart="@android:drawable/ic_menu_search"
+            android:paddingTop="10dp"
-            android:drawablePadding="8dp"
+            android:paddingBottom="10dp"
-            android:background="@android:color/white"
+            android:visibility="gone"
-            android:padding="12dp"
+            android:background="@color/primary_dark"
-            android:textColor="@color/text_dark"/>
+            android:elevation="4dp">
 
-        <Button
+            <LinearLayout
-            android:id="@+id/btnOpenRefund"
+                android:layout_width="match_parent"
-            android:layout_width="wrap_content"
+                android:layout_height="44dp"
-            android:layout_height="wrap_content"
+                android:background="@drawable/bg_search_bar"
-            android:text="Refund"
+                android:gravity="center_vertical"
-            android:backgroundTint="@color/accent_coral"
+                android:paddingStart="12dp"
-            android:textColor="@color/white"/>
+                android:paddingEnd="12dp">
+
+                <ImageView
+                    android:layout_width="18dp"
+                    android:layout_height="18dp"
+                    android:src="@android:drawable/ic_menu_search"
+                    android:alpha="0.6"/>
+
+                <EditText
+                    android:id="@+id/etSearchSale"
+                    android:layout_width="0dp"
+                    android:layout_height="match_parent"
+                    android:layout_weight="1"
+                    android:hint="Search by employee or store..."
+                    android:inputType="text"
+                    android:background="@android:color/transparent"
+                    android:textColor="@color/text_dark"
+                    android:textColorHint="#99000000"
+                    android:textSize="14sp"
+                    android:paddingStart="8dp"
+                    android:paddingEnd="8dp"/>
+
+            </LinearLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:layout_marginTop="8dp"
+                android:gravity="center_vertical">
+
+                <Spinner
+                    android:id="@+id/spinnerStore"
+                    android:layout_width="0dp"
+                    android:layout_height="44dp"
+                    android:layout_weight="1"
+                    android:background="@drawable/bg_spinner"
+                    android:paddingStart="12dp"
+                    android:paddingEnd="8dp"
+                    android:layout_marginEnd="4dp"/>
+
+                <Spinner
+                    android:id="@+id/spinnerPaymentMethod"
+                    android:layout_width="0dp"
+                    android:layout_height="44dp"
+                    android:layout_weight="1"
+                    android:background="@drawable/bg_spinner"
+                    android:paddingStart="12dp"
+                    android:paddingEnd="8dp"
+                    android:layout_marginEnd="4dp"
+                    android:layout_marginStart="4dp"/>
+
+                <Button
+                    android:id="@+id/btnOpenRefund"
+                    android:layout_width="0dp"
+                    android:layout_height="44dp"
+                    android:layout_weight="1"
+                    android:text="Process Refund"
+                    android:backgroundTint="@color/accent_coral"
+                    android:textColor="@color/white"
+                    android:textSize="12sp"
+                    android:insetTop="0dp"
+                    android:insetBottom="0dp"
+                    android:layout_marginStart="4dp"/>
+            </LinearLayout>
+
+        </LinearLayout>
 
         <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
             android:id="@+id/swipeRefreshSale"
@@ -68,7 +145,8 @@
                 android:id="@+id/recyclerViewSales"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
-                android:padding="8dp"/>
+                android:padding="8dp"
+                android:clipToPadding="false"/>
 
         </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 
@@ -85,5 +163,4 @@
         app:srcCompat="@android:drawable/ic_input_add"
         app:tint="@color/white"/>
 
-
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
-</androidx.coordinatorlayout.widget.CoordinatorLayout>

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

@@ -46,7 +46,6 @@
             android:orientation="vertical"
             android:padding="24dp">
 
-            <!-- Sale Info Card -->
             <LinearLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
@@ -65,7 +64,6 @@
                     android:layout_gravity="end"
                     android:layout_marginBottom="8dp"/>
 
-                <!-- Store -->
                 <TextView
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
@@ -80,7 +78,6 @@
                     android:layout_height="wrap_content"
                     android:layout_marginBottom="16dp"/>
 
-                <!-- Customer (optional) -->
                 <TextView
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
@@ -110,6 +107,54 @@
                     android:layout_height="wrap_content"
                     android:layout_marginBottom="16dp"/>
 
+                <LinearLayout
+                    android:id="@+id/llExtraInfo"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:orientation="horizontal"
+                    android:visibility="gone">
+
+                    <LinearLayout
+                        android:layout_width="0dp"
+                        android:layout_height="wrap_content"
+                        android:layout_weight="1"
+                        android:orientation="vertical">
+                        <TextView
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="Channel"
+                            android:textColor="@color/text_dark"
+                            android:textSize="12sp"/>
+                        <TextView
+                            android:id="@+id/tvSaleChannel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="—"
+                            android:textSize="14sp"
+                            android:layout_marginTop="4dp"/>
+                    </LinearLayout>
+
+                    <LinearLayout
+                        android:layout_width="0dp"
+                        android:layout_height="wrap_content"
+                        android:layout_weight="1"
+                        android:orientation="vertical">
+                        <TextView
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="Points Earned"
+                            android:textColor="@color/text_dark"
+                            android:textSize="12sp"/>
+                        <TextView
+                            android:id="@+id/tvSalePoints"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="0"
+                            android:textSize="14sp"
+                            android:layout_marginTop="4dp"/>
+                    </LinearLayout>
+                </LinearLayout>
+
             </LinearLayout>
 
             <!-- Items Card -->
@@ -130,8 +175,8 @@
                     android:textStyle="bold"
                     android:layout_marginBottom="12dp"/>
 
-                <!-- Item row -->
                 <LinearLayout
+                    android:id="@+id/llAddItemRow"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:orientation="horizontal"
@@ -164,24 +209,91 @@
 
                 </LinearLayout>
 
-                <!-- Items list container -->
                 <LinearLayout
                     android:id="@+id/llSaleItems"
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"
                     android:orientation="vertical"/>
 
-                <!-- Total -->
+                <View
-                <TextView
+                    android:layout_width="match_parent"
-                    android:id="@+id/tvSaleDetailTotal"
+                    android:layout_height="1dp"
-                    android:layout_width="wrap_content"
+                    android:background="#EEEEEE"
+                    android:layout_marginTop="12dp"
+                    android:layout_marginBottom="12dp"/>
+
+                <LinearLayout
+                    android:layout_width="match_parent"
                     android:layout_height="wrap_content"
-                    android:text="Total: $0.00"
+                    android:orientation="vertical">
-                    android:textSize="18sp"
+
-                    android:textStyle="bold"
+                    <LinearLayout
-                    android:textColor="@color/accent_coral"
+                        android:layout_width="match_parent"
-                    android:layout_gravity="end"
+                        android:layout_height="wrap_content"
-                    android:layout_marginTop="12dp"/>
+                        android:orientation="horizontal">
+                        <TextView
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1"
+                            android:text="Subtotal:"/>
+                        <TextView
+                            android:id="@+id/tvSaleSubtotal"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="$0.00"/>
+                    </LinearLayout>
+
+                    <LinearLayout
+                        android:id="@+id/llCouponDiscount"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:orientation="horizontal"
+                        android:layout_marginTop="4dp"
+                        android:visibility="gone">
+                        <TextView
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1"
+                            android:text="Coupon Discount:"/>
+                        <TextView
+                            android:id="@+id/tvSaleCouponDiscount"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="-$0.00"
+                            android:textColor="@color/status_adopted"/>
+                    </LinearLayout>
+
+                    <LinearLayout
+                        android:id="@+id/llEmployeeDiscount"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:orientation="horizontal"
+                        android:layout_marginTop="4dp"
+                        android:visibility="gone">
+                        <TextView
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1"
+                            android:text="Employee Discount:"/>
+                        <TextView
+                            android:id="@+id/tvSaleEmployeeDiscount"
+                            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"
+                        android:layout_height="wrap_content"
+                        android:text="Total: $0.00"
+                        android:textSize="18sp"
+                        android:textStyle="bold"
+                        android:textColor="@color/accent_coral"
+                        android:layout_gravity="end"
+                        android:layout_marginTop="12dp"/>
+                </LinearLayout>
 
             </LinearLayout>
 

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

@@ -12,6 +12,7 @@
         android:orientation="vertical">
 
         <LinearLayout
+            android:id="@+id/headerStaff"
             android:layout_width="match_parent"
             android:layout_height="56dp"
             android:background="@color/primary_dark"
@@ -34,22 +35,63 @@
                 android:text="Staff Accounts"
                 android:textColor="@color/white"
                 android:textSize="20sp"
-                android:textStyle="bold"/>
+                android:textStyle="bold"
+                android:layout_marginStart="8dp"/>
+
+            <ImageButton
+                android:id="@+id/btnToggleFilterStaff"
+                android:layout_width="48dp"
+                android:layout_height="48dp"
+                android:src="@android:drawable/ic_menu_search"
+                android:background="?attr/selectableItemBackgroundBorderless"
+                app:tint="@color/white"
+                android:contentDescription="Toggle filter"/>
 
         </LinearLayout>
 
-        <EditText
+        <LinearLayout
-            android:id="@+id/etSearchStaff"
+            android:id="@+id/layoutFilterStaff"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_margin="8dp"
+            android:orientation="vertical"
-            android:hint="Search by name, username or email..."
+            android:paddingStart="12dp"
-            android:inputType="text"
+            android:paddingEnd="12dp"
-            android:drawableStart="@android:drawable/ic_menu_search"
+            android:paddingTop="10dp"
-            android:drawablePadding="8dp"
+            android:paddingBottom="10dp"
-            android:background="@android:color/white"
+            android:visibility="gone"
-            android:padding="12dp"
+            android:background="@color/primary_dark"
-            android:textColor="@color/text_dark"/>
+            android:elevation="4dp">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="44dp"
+                android:background="@drawable/bg_search_bar"
+                android:gravity="center_vertical"
+                android:paddingStart="12dp"
+                android:paddingEnd="12dp">
+
+                <ImageView
+                    android:layout_width="18dp"
+                    android:layout_height="18dp"
+                    android:src="@android:drawable/ic_menu_search"
+                    android:alpha="0.6"/>
+
+                <EditText
+                    android:id="@+id/etSearchStaff"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:hint="Search staff..."
+                    android:inputType="text"
+                    android:background="@android:color/transparent"
+                    android:textColor="@color/text_dark"
+                    android:textColorHint="#99000000"
+                    android:textSize="14sp"
+                    android:paddingStart="8dp"
+                    android:paddingEnd="8dp"/>
+
+            </LinearLayout>
+
+        </LinearLayout>
 
         <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
             android:id="@+id/swipeRefreshStaff"
@@ -78,5 +120,3 @@
         app:tint="@color/white"/>
 
 </androidx.coordinatorlayout.widget.CoordinatorLayout>
-
-

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

@@ -1,99 +1,117 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.cardview.widget.CardView
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:layout_margin="8dp"
+    android:orientation="vertical"
-    app:cardCornerRadius="8dp"
+    android:paddingStart="16dp"
-    app:cardElevation="2dp">
+    android:paddingEnd="16dp"
+    android:paddingTop="16dp"
+    android:paddingBottom="16dp"
+    android:background="@color/white">
 
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:orientation="vertical"
+        android:orientation="horizontal"
-        android:padding="16dp">
+        android:gravity="center_vertical">
+
+        <com.google.android.material.imageview.ShapeableImageView
+            android:id="@+id/ivEmployeeProfile"
+            android:layout_width="60dp"
+            android:layout_height="60dp"
+            android:layout_marginEnd="16dp"
+            android:scaleType="centerCrop"
+            android:src="@drawable/placeholder"
+            app:shapeAppearanceOverlay="@style/CircleImageView"
+            app:strokeWidth="2dp"
+            app:strokeColor="#BDBDBD"
+            android:padding="2dp"
+            android:contentDescription="Employee Profile Image" />
 
         <LinearLayout
-            android:layout_width="match_parent"
+            android:layout_width="0dp"
             android:layout_height="wrap_content"
-            android:orientation="horizontal">
+            android:layout_weight="1"
+            android:orientation="vertical">
 
             <LinearLayout
-                android:layout_width="0dp"
+                android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:layout_weight="1"
+                android:orientation="horizontal"
-                android:orientation="vertical">
+                android:gravity="center_vertical">
 
                 <TextView
                     android:id="@+id/tvEmployeeFullName"
-                    android:layout_width="wrap_content"
+                    android:layout_width="0dp"
                     android:layout_height="wrap_content"
-                    android:textSize="16sp"
+                    android:layout_weight="1"
-                    android:textStyle="bold"
+                    android:ellipsize="end"
-                    android:textColor="@color/text_dark"/>
+                    android:maxLines="1"
-
+                    android:text="Full Name"
-                <TextView
+                    android:textColor="@color/text_dark"
-                    android:id="@+id/tvEmployeeUsername"
+                    android:textSize="18sp"
-                    android:layout_width="wrap_content"
+                    android:textStyle="bold" />
-                    android:layout_height="wrap_content"
-                    android:textSize="13sp"
-                    android:textColor="@color/text_light"
-                    android:layout_marginTop="2dp"/>
-
-                <TextView
-                    android:id="@+id/tvEmployeeEmail"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:textSize="12sp"
-                    android:textColor="@color/text_light"
-                    android:layout_marginTop="2dp"/>
-
-                <TextView
-                    android:id="@+id/tvEmployeePhone"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:textSize="12sp"
-                    android:textColor="@color/text_light"
-                    android:layout_marginTop="2dp"/>
-
-            </LinearLayout>
-
-            <LinearLayout
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:orientation="vertical"
-                android:gravity="end"
-                android:layout_gravity="center_vertical">
 
                 <TextView
                     android:id="@+id/tvEmployeeRole"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    android:paddingStart="10dp"
+                    android:paddingStart="8dp"
-                    android:paddingEnd="10dp"
+                    android:paddingTop="3dp"
-                    android:paddingTop="4dp"
+                    android:paddingEnd="8dp"
-                    android:paddingBottom="4dp"
+                    android:paddingBottom="3dp"
-                    android:textSize="11sp"
+                    android:text="ROLE"
+                    android:textAllCaps="true"
                     android:textColor="@color/white"
-                    android:layout_marginBottom="4dp"/>
+                    android:textSize="11sp" />
+
+            </LinearLayout>
+
+            <TextView
+                android:id="@+id/tvEmployeeUsername"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="2dp"
+                android:text="@username"
+                android:textColor="#888888"
+                android:textSize="14sp" />
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:gravity="center_vertical"
+                android:layout_marginTop="4dp">
+
+                <TextView
+                    android:id="@+id/tvEmployeeEmail"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:text="email@example.com"
+                    android:textColor="#888888"
+                    android:textSize="13sp"
+                    android:ellipsize="end"
+                    android:maxLines="1"/>
 
                 <TextView
                     android:id="@+id/tvEmployeeStatus"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    android:paddingStart="10dp"
+                    android:text="Active"
-                    android:paddingEnd="10dp"
+                    android:textColor="@color/accent_coral"
-                    android:paddingTop="4dp"
+                    android:textSize="13sp"
-                    android:paddingBottom="4dp"
+                    android:textStyle="bold" />
-                    android:textSize="11sp"
-                    android:textColor="@color/white"/>
-
 
             </LinearLayout>
-
         </LinearLayout>
-
     </LinearLayout>
 
-</androidx.cardview.widget.CardView>
+    <View
+        android:layout_width="match_parent"
+        android:layout_height="1dp"
+        android:background="#F0F0F0"
+        android:layout_marginTop="12dp"/>
+
+</LinearLayout>

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

@@ -1,23 +1,64 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.cardview.widget.CardView
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:layout_margin="8dp"
+    android:orientation="horizontal"
-    app:cardCornerRadius="8dp"
+    android:background="@color/white"
-    app:cardElevation="2dp">
+    android:foreground="?attr/selectableItemBackground"
+    android:paddingStart="16dp"
+    android:paddingEnd="16dp"
+    android:paddingTop="16dp"
+    android:paddingBottom="16dp"
+    android:gravity="center_vertical">
+
+    <CheckBox
+        android:id="@+id/cbSelectSale"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="12dp"
+        android:visibility="gone"
+        android:clickable="false"
+        android:focusable="false"/>
 
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:orientation="vertical"
+        android:orientation="vertical">
-        android:padding="16dp">
 
         <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:orientation="horizontal">
+            android:orientation="horizontal"
+            android:gravity="center_vertical">
+
+            <TextView
+                android:id="@+id/tvSaleId"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:ellipsize="end"
+                android:maxLines="1"
+                android:text="Sale #—"
+                android:textColor="@color/text_dark"
+                android:textSize="18sp"
+                android:textStyle="bold" />
+
+            <TextView
+                android:id="@+id/tvSaleTotal"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="$0.00"
+                android:textColor="#4CAF50"
+                android:textSize="16sp"
+                android:textStyle="bold" />
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:layout_marginTop="4dp">
 
             <LinearLayout
                 android:layout_width="0dp"
@@ -25,74 +66,58 @@
                 android:layout_weight="1"
                 android:orientation="vertical">
 
-                <TextView
-                    android:id="@+id/tvSaleId"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:textSize="16sp"
-                    android:textStyle="bold"
-                    android:textColor="@color/text_dark"/>
-
                 <TextView
                     android:id="@+id/tvSaleEmployee"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    android:textSize="13sp"
+                    android:text="By: —"
-                    android:textColor="@color/text_light"
+                    android:textColor="#888888"
-                    android:layout_marginTop="2dp"/>
+                    android:textSize="14sp" />
 
                 <TextView
                     android:id="@+id/tvSaleDate"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    android:textSize="12sp"
+                    android:layout_marginTop="2dp"
-                    android:textColor="@color/text_light"
+                    android:text="—"
-                    android:layout_marginTop="2dp"/>
+                    android:textColor="#888888"
+                    android:textSize="14sp" />
 
                 <TextView
                     android:id="@+id/tvSalePayment"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
-                    android:textSize="12sp"
+                    android:layout_marginTop="2dp"
-                    android:textColor="@color/text_light"
+                    android:text="—"
-                    android:layout_marginTop="2dp"/>
+                    android:textColor="#888888"
+                    android:textSize="14sp" />
 
             </LinearLayout>
 
-            <LinearLayout
+            <TextView
+                android:id="@+id/tvSaleRefundBadge"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:orientation="vertical"
+                android:background="@color/status_adopted"
-                android:gravity="end"
+                android:paddingStart="8dp"
-                android:layout_gravity="center_vertical">
+                android:paddingTop="3dp"
-
+                android:paddingEnd="8dp"
-                <TextView
+                android:paddingBottom="3dp"
-                    android:id="@+id/tvSaleTotal"
+                android:text="REFUND"
-                    android:layout_width="wrap_content"
+                android:textAllCaps="true"
-                    android:layout_height="wrap_content"
+                android:textColor="@color/white"
-                    android:textSize="18sp"
+                android:textSize="11sp"
-                    android:textStyle="bold"
+                android:visibility="gone"
-                    android:textColor="@color/accent_coral"/>
+                android:layout_gravity="bottom"/>
-
-                <TextView
-                    android:id="@+id/tvSaleRefundBadge"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:text="REFUND"
-                    android:textSize="10sp"
-                    android:textColor="@color/white"
-                    android:background="@color/accent_coral"
-                    android:paddingStart="6dp"
-                    android:paddingEnd="6dp"
-                    android:paddingTop="2dp"
-                    android:paddingBottom="2dp"
-                    android:layout_marginTop="4dp"
-                    android:visibility="gone"/>
-
-            </LinearLayout>
 
         </LinearLayout>
 
+        <View
+            android:layout_width="match_parent"
+            android:layout_height="1dp"
+            android:background="#F0F0F0"
+            android:layout_marginTop="12dp" />
+
     </LinearLayout>
 
-</androidx.cardview.widget.CardView>
+</LinearLayout>

android/app/src/res/layout/item_sale.xml

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:background="@color/white"
+    android:paddingStart="16dp"
+    android:paddingEnd="16dp"
+    android:paddingTop="16dp"
+    android:paddingBottom="16dp"
+    android:gravity="center_vertical">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:gravity="center_vertical">
+
+        <TextView
+            android:id="@+id/tvSaleId"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="Sale #123"
+            android:textSize="18sp"
+            android:textStyle="bold"
+            android:textColor="@color/text_dark"/>
+
+        <TextView
+            android:id="@+id/tvSaleTotal"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="$0.00"
+            android:textSize="18sp"
+            android:textStyle="bold"
+            android:textColor="@color/accent_coral"/>
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:layout_marginTop="4dp">
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="vertical">
+
+            <TextView
+                android:id="@+id/tvSaleEmployee"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="By: Employee"
+                android:textSize="14sp"
+                android:textColor="#888888"/>
+
+            <TextView
+                android:id="@+id/tvSaleDate"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="2023-01-01"
+                android:textSize="14sp"
+                android:textColor="#888888"
+                android:layout_marginTop="2dp"/>
+
+            <TextView
+                android:id="@+id/tvSalePayment"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Cash"
+                android:textSize="14sp"
+                android:textColor="#888888"
+                android:layout_marginTop="2dp"/>
+        </LinearLayout>
+
+        <TextView
+            android:id="@+id/tvSaleRefundBadge"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="REFUND"
+            android:textSize="12sp"
+            android:textStyle="bold"
+            android:textColor="@color/white"
+            android:background="@color/accent_coral"
+            android:paddingStart="8dp"
+            android:paddingEnd="8dp"
+            android:paddingTop="2dp"
+            android:paddingBottom="2dp"
+            android:layout_gravity="bottom"
+            android:visibility="gone"/>
+    </LinearLayout>
+
+    <View
+        android:layout_width="match_parent"
+        android:layout_height="1dp"
+        android:background="#F0F0F0"
+        android:layout_marginTop="12dp"/>
+
+</LinearLayout>

backend/src/main/java/com/petshop/backend/controller/SaleController.java

@@ -25,8 +25,10 @@ public class SaleController {
     @PreAuthorize("hasAnyRole('STAFF', 'ADMIN')")
     public ResponseEntity<Page<SaleResponse>> getAllSales(
             @RequestParam(required = false) String q,
+            @RequestParam(required = false) String paymentMethod,
+            @RequestParam(required = false) Long storeId,
             Pageable pageable) {
-        return ResponseEntity.ok(saleService.getAllSales(q, pageable));
+        return ResponseEntity.ok(saleService.getAllSales(q, paymentMethod, storeId, pageable));
     }
 
     @GetMapping("/{id}")

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

@@ -14,10 +14,14 @@ import java.util.List;
 public interface SaleRepository extends JpaRepository<Sale, Long> {
 
     @Query("SELECT s FROM Sale s WHERE " +
+           "(:q IS NULL OR (" +
            "LOWER(s.employee.firstName) LIKE LOWER(CONCAT('%', :q, '%')) OR " +
            "LOWER(s.employee.lastName) LIKE LOWER(CONCAT('%', :q, '%')) OR " +
-           "LOWER(s.store.storeName) LIKE LOWER(CONCAT('%', :q, '%'))")
+           "LOWER(s.store.storeName) LIKE LOWER(CONCAT('%', :q, '%'))" +
-    Page<Sale> searchSales(@Param("q") String query, Pageable pageable);
+           ")) AND " +
+           "(:paymentMethod IS NULL OR LOWER(s.paymentMethod) = LOWER(:paymentMethod)) AND " +
+           "(:storeId IS NULL OR s.store.storeId = :storeId)")
+    Page<Sale> searchSales(@Param("q") String query, @Param("paymentMethod") String paymentMethod, @Param("storeId") Long storeId, Pageable pageable);
 
     List<Sale> findByOriginalSaleSaleId(Long originalSaleId);
 }

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

@@ -39,13 +39,8 @@ public class SaleService {
     }
 
     @Transactional(readOnly = true)
-    public Page<SaleResponse> getAllSales(String query, Pageable pageable) {
+    public Page<SaleResponse> getAllSales(String query, String paymentMethod, Long storeId, Pageable pageable) {
-        Page<Sale> sales;
+        Page<Sale> sales = saleRepository.searchSales(normalizeFilter(query), normalizeFilter(paymentMethod), storeId, pageable);
-        if (query != null && !query.trim().isEmpty()) {
-            sales = saleRepository.searchSales(query, pageable);
-        } else {
-            sales = saleRepository.findAll(pageable);
-        }
         return sales.map(this::mapToResponse);
     }
 
@@ -236,6 +231,14 @@ public class SaleService {
         return response;
     }
 
+    private String normalizeFilter(String value) {
+        if (value == null) {
+            return null;
+        }
+        String trimmed = value.trim();
+        return trimmed.isEmpty() ? null : trimmed;
+    }
+
     String normalizePaymentMethod(String paymentMethod) {
         if (paymentMethod == null) {
             return null;