Appointments

validation, time slots for booking appointment , date, store. connected to service Type, pet name, customer name. Loads from database

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

@@ -1,7 +1,5 @@
 package com.example.petstoremobile.adapters;
 
-
-
 import android.graphics.Color;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -10,26 +8,24 @@ import android.widget.TextView;
 import androidx.annotation.NonNull;
 import androidx.recyclerview.widget.RecyclerView;
 import com.example.petstoremobile.R;
-import com.example.petstoremobile.models.Appointment;
+import com.example.petstoremobile.dtos.AppointmentDTO;
 import java.util.List;
 
 public class AppointmentAdapter extends RecyclerView.Adapter<AppointmentAdapter.AppointmentViewHolder> {
 
-    private List<Appointment> appointmentList;
+    private List<AppointmentDTO> appointmentList;
     private OnAppointmentClickListener appointmentClickListener;
 
-    // Interface for appointment click on recycler view
     public interface OnAppointmentClickListener {
         void onAppointmentClick(int position);
     }
 
-    // Constructor
-    public AppointmentAdapter(List<Appointment> appointmentList, OnAppointmentClickListener appointmentClickListener) {
+    public AppointmentAdapter(List<AppointmentDTO> appointmentList,
+                              OnAppointmentClickListener appointmentClickListener) {
         this.appointmentList = appointmentList;
         this.appointmentClickListener = appointmentClickListener;
     }
 
-    // Get the controls of each row in recycler view
     public static class AppointmentViewHolder extends RecyclerView.ViewHolder {
         TextView tvCustomerName, tvPetName, tvServiceType, tvDateTime, tvAppointmentStatus;
 
@@ -43,7 +39,6 @@ public class AppointmentAdapter extends RecyclerView.Adapter<AppointmentAdapter.
         }
     }
 
-    // Create a new row view
     @NonNull
     @Override
     public AppointmentViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
@@ -51,31 +46,34 @@ public class AppointmentAdapter extends RecyclerView.Adapter<AppointmentAdapter.
         return new AppointmentViewHolder(v);
     }
 
-    // Populate the row with appointment data
     @Override
     public void onBindViewHolder(@NonNull AppointmentViewHolder holder, int position) {
-        Appointment appointment = appointmentList.get(position);
+        AppointmentDTO a = appointmentList.get(position);
 
-        holder.tvCustomerName.setText(appointment.getCustomerName());
-        holder.tvPetName.setText("Pet: " + appointment.getPetName());
-        holder.tvServiceType.setText(appointment.getServiceType());
-        holder.tvDateTime.setText(appointment.getAppointmentDate() + " at " + appointment.getAppointmentTime());
-        holder.tvAppointmentStatus.setText(appointment.getStatus());
+        holder.tvCustomerName.setText(a.getCustomerName() != null ? a.getCustomerName() : "");
+        holder.tvPetName.setText("Pet: " + (a.getPetName() != null ? a.getPetName() : ""));
+        holder.tvServiceType.setText(a.getServiceType() != null ? a.getServiceType() : "");
+        holder.tvDateTime.setText((a.getAppointmentDate() != null ? a.getAppointmentDate() : "") +
+                " at " + (a.getAppointmentTime() != null ? a.getAppointmentTime() : ""));
 
-        // Set the status color depending on appointment status
-        switch (appointment.getStatus()) {
-            case "Confirmed":
-                holder.tvAppointmentStatus.setBackgroundColor(Color.parseColor("#4CAF50"));
+        String status = a.getStatus() != null ? a.getStatus() : "";
+        holder.tvAppointmentStatus.setText(status);
+
+        switch (status) {
+            case "Booked":
+                holder.tvAppointmentStatus.setBackgroundColor(Color.parseColor("#2196F3")); // blue
                 break;
-            case "Pending":
-                holder.tvAppointmentStatus.setBackgroundColor(Color.parseColor("#FF9800"));
+            case "Completed":
+                holder.tvAppointmentStatus.setBackgroundColor(Color.parseColor("#4CAF50")); // green
+                break;
+            case "Cancelled":
+                holder.tvAppointmentStatus.setBackgroundColor(Color.parseColor("#F44336")); // red
                 break;
             default:
-                holder.tvAppointmentStatus.setBackgroundColor(Color.parseColor("#F44336"));
+                holder.tvAppointmentStatus.setBackgroundColor(Color.parseColor("#9E9E9E")); // gray
                 break;
         }
 
-        // When a row is clicked, open the detail view
         holder.itemView.setOnClickListener(v -> appointmentClickListener.onAppointmentClick(position));
     }
 

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

@@ -0,0 +1,33 @@
+package com.example.petstoremobile.api;
+
+import com.example.petstoremobile.dtos.AppointmentDTO;
+import com.example.petstoremobile.dtos.PageResponse;
+
+import retrofit2.Call;
+import retrofit2.http.Body;
+import retrofit2.http.DELETE;
+import retrofit2.http.GET;
+import retrofit2.http.POST;
+import retrofit2.http.PUT;
+import retrofit2.http.Path;
+import retrofit2.http.Query;
+
+public interface AppointmentApi {
+
+    @GET("api/v1/appointments")
+    Call<PageResponse<AppointmentDTO>> getAllAppointments(
+            @Query("page") int page,
+            @Query("size") int size);
+
+    @GET("api/v1/appointments/{id}")
+    Call<AppointmentDTO> getAppointmentById(@Path("id") Long id);
+
+    @POST("api/v1/appointments")
+    Call<AppointmentDTO> createAppointment(@Body AppointmentDTO appointment);
+
+    @PUT("api/v1/appointments/{id}")
+    Call<AppointmentDTO> updateAppointment(@Path("id") Long id, @Body AppointmentDTO appointment);
+
+    @DELETE("api/v1/appointments/{id}")
+    Call<Void> deleteAppointment(@Path("id") Long id);
+}

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

@@ -0,0 +1,120 @@
+package com.example.petstoremobile.dtos;
+
+import java.math.BigDecimal;
+import java.util.List;
+
+public class AppointmentDTO {
+    // Response fields (from server)
+    private Long appointmentId;
+    private Long customerId;
+    private String customerName;
+    private Long storeId;
+    private String storeName;
+    private Long serviceId;
+    private String serviceName;
+    private String appointmentDate;
+    private String appointmentTime;
+    private String appointmentStatus;
+    private List<String> petNames;
+    private List<Long> petIds;
+    private String createdAt;
+    private String updatedAt;
+
+    // Constructor for CREATE/UPDATE request body
+    // Matches AppointmentRequest exactly
+    public AppointmentDTO(Long customerId, Long storeId, Long serviceId,
+                          String appointmentDate, String appointmentTime,
+                          String appointmentStatus, List<Long> petIds) {
+        this.customerId = customerId;
+        this.storeId = storeId;
+        this.serviceId = serviceId;
+        this.appointmentDate = appointmentDate;
+        this.appointmentTime = appointmentTime;
+        this.appointmentStatus = appointmentStatus;
+        this.petIds = petIds;
+    }
+
+    // Getters
+    public Long getAppointmentId() {
+        return appointmentId;
+    }
+
+    public Long getCustomerId() {
+        return customerId;
+    }
+
+    public String getCustomerName() {
+        return customerName;
+    }
+
+    public Long getStoreId() {
+        return storeId;
+    }
+
+    public String getStoreName() {
+        return storeName;
+    }
+
+    public Long getServiceId() {
+        return serviceId;
+    }
+
+    public String getServiceName() {
+        return serviceName;
+    }
+
+    public String getAppointmentDate() {
+        return appointmentDate;
+    }
+
+    public String getAppointmentTime() {
+        return appointmentTime;
+    }
+
+    public String getAppointmentStatus() {
+        return appointmentStatus;
+    }
+
+    public List<String> getPetNames() {
+        return petNames;
+    }
+
+    public List<Long> getPetIds() {
+        return petIds;
+    }
+
+    public String getCreatedAt() {
+        return createdAt;
+    }
+
+    public String getUpdatedAt() {
+        return updatedAt;
+    }
+
+    // Convenience getters for adapter/list display
+    public String getPetName() {
+        return (petNames != null && !petNames.isEmpty()) ? petNames.get(0) : "";
+    }
+
+    public Long getPetID() {
+        return (petIds != null && !petIds.isEmpty()) ? petIds.get(0) : null;
+    }
+
+    public Long getPetId() {
+        return getPetID();
+    }
+
+    // Keep old name so adapter doesn't break
+    public String getServiceType() {
+        return serviceName;
+    }
+
+    public Long getServiceID() {
+        return serviceId;
+    }
+
+    // Status alias
+    public String getStatus() {
+        return appointmentStatus;
+    }
+}

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

@@ -1,59 +1,38 @@
 package com.example.petstoremobile.dtos;
 
-import com.google.gson.annotations.SerializedName;
-
 public class CustomerDTO {
-    @SerializedName("customerId")
     private Long customerId;
-    
     private String firstName;
     private String lastName;
     private String email;
-    private String phone;
-
-    public CustomerDTO() {}
+    private String createdAt;
+    private String updatedAt;
 
     public Long getCustomerId() {
         return customerId;
     }
 
-    public void setCustomerId(Long customerId) {
-        this.customerId = customerId;
-    }
-
     public String getFirstName() {
         return firstName;
     }
 
-    public void setFirstName(String firstName) {
-        this.firstName = firstName;
-    }
-
     public String getLastName() {
         return lastName;
     }
 
-    public void setLastName(String lastName) {
-        this.lastName = lastName;
-    }
-
     public String getEmail() {
         return email;
     }
 
-    public void setEmail(String email) {
-        this.email = email;
-    }
-
-    public String getPhone() {
-        return phone;
-    }
-
-    public void setPhone(String phone) {
-        this.phone = phone;
-    }
-
     public String getFullName() {
-        return (firstName != null ? firstName : "") + " " + (lastName != null ? lastName : "");
+        return firstName + " " + lastName;
+    }
+
+    public String getCreatedAt() {
+        return createdAt;
+    }
+
+    public String getUpdatedAt() {
+        return updatedAt;
     }
 }

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

@@ -0,0 +1,25 @@
+package com.example.petstoremobile.dtos;
+
+public class StoreDTO {
+    private Long storeId;
+    private String storeName;
+    private String address;
+    private String phone;
+    private String email;
+    private String createdAt;
+    private String updatedAt;
+
+    // Constructor for hardcoded fallback
+    public StoreDTO(Long storeId, String storeName) {
+        this.storeId = storeId;
+        this.storeName = storeName;
+    }
+
+    public Long getStoreId() { return storeId; }
+    public String getStoreName() { return storeName; }
+    public String getAddress() { return address; }
+    public String getPhone() { return phone; }
+    public String getEmail() { return email; }
+    public String getCreatedAt() { return createdAt; }
+    public String getUpdatedAt() { return updatedAt; }
+}

android/app/src/main/java/com/example/petstoremobile/fragments/ListFragment.java

@@ -21,6 +21,9 @@ import com.example.petstoremobile.fragments.listfragments.AdoptionFragment;
 import com.example.petstoremobile.fragments.listfragments.AppointmentFragment;
 import com.example.petstoremobile.fragments.listfragments.InventoryFragment;
 import com.example.petstoremobile.fragments.listfragments.ProductFragment;
+import com.example.petstoremobile.fragments.listfragments.ProductSupplierFragment;
+import com.example.petstoremobile.fragments.listfragments.PurchaseOrderFragment;
+import com.example.petstoremobile.fragments.listfragments.SaleFragment;
 
 //The Fragment for the displaying the list of entities to be viewed
 public class ListFragment extends Fragment {
@@ -31,7 +34,7 @@ public class ListFragment extends Fragment {
 
     // Adoptions, Appointments, Inventory, Products
 
-    private LinearLayout drawerAdoptions, drawerAppointments, drawerInventory, drawerProducts;
+    private LinearLayout drawerAdoptions, drawerAppointments, drawerInventory, drawerProducts, drawerProductSupplier, drawerPurchaseOrderView, drawerSale;
 
 
     @Override
@@ -48,6 +51,10 @@ public class ListFragment extends Fragment {
         drawerAppointments = view.findViewById(R.id.drawerAppointments);
         drawerInventory = view.findViewById(R.id.drawerInventory);
         drawerProducts = view.findViewById(R.id.drawerProducts);
+        drawerProductSupplier=view.findViewById(R.id.drawerProductSupplier);
+        drawerSale=view.findViewById(R.id.drawerSale);
+        drawerPurchaseOrderView=view.findViewById(R.id.drawerPurchaseOrderView);
+
 
         //needed to disable touches on the innerContainer while the drawer is open
         touchBlocker = view.findViewById(R.id.touchBlocker);
@@ -108,7 +115,7 @@ public class ListFragment extends Fragment {
             drawerLayout.closeDrawers();
         });
 
-        //Appoinment
+        //Appointment
         drawerAppointments.setOnClickListener(v -> {
             loadFragment(new AppointmentFragment());
             drawerLayout.closeDrawers();
@@ -126,6 +133,27 @@ public class ListFragment extends Fragment {
             drawerLayout.closeDrawers();
         });
 
+        //ProductSupplier
+
+        drawerProductSupplier.setOnClickListener(v -> {
+            loadFragment(new ProductSupplierFragment());
+            drawerLayout.closeDrawers();
+        });
+
+        //Purchase
+
+        drawerPurchaseOrderView.setOnClickListener(v -> {
+            loadFragment(new PurchaseOrderFragment());
+            drawerLayout.closeDrawers();
+        });
+
+        //Sale
+
+        drawerSale.setOnClickListener(v -> {
+            loadFragment(new SaleFragment());
+            drawerLayout.closeDrawers();
+        });
+
         return view;
     }
 

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

@@ -1,35 +1,52 @@
 package com.example.petstoremobile.fragments.listfragments;
 
-// Added search/filter bar to filter appointments by customer name or service type.
-// Added pull-to-refresh using SwipeRefreshLayout.
-
 import android.os.Bundle;
+
+import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
 import android.text.Editable;
 import android.text.TextWatcher;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.EditText;
 import android.widget.ImageButton;
+import android.widget.Toast;
 
 import com.example.petstoremobile.R;
 import com.example.petstoremobile.adapters.AppointmentAdapter;
+import com.example.petstoremobile.api.AppointmentApi;
+import com.example.petstoremobile.api.PetApi;
+import com.example.petstoremobile.api.ServiceApi;
+import com.example.petstoremobile.api.RetrofitClient;
+import com.example.petstoremobile.dtos.AppointmentDTO;
+import com.example.petstoremobile.dtos.ServiceDTO;
+import com.example.petstoremobile.dtos.PageResponse;
+import com.example.petstoremobile.dtos.PetDTO;
 import com.example.petstoremobile.fragments.ListFragment;
 import com.example.petstoremobile.fragments.listfragments.detailfragments.AppointmentDetailFragment;
-import com.example.petstoremobile.models.Appointment;
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
+
 import java.util.ArrayList;
 import java.util.List;
 
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+
 public class AppointmentFragment extends Fragment implements AppointmentAdapter.OnAppointmentClickListener {
 
-    private List<Appointment> appointmentList = new ArrayList<>();  // full data list
-    private List<Appointment> filteredList = new ArrayList<>();     // filtered display list
+    private List<AppointmentDTO> appointmentList = new ArrayList<>();
+    private List<AppointmentDTO> filteredList = new ArrayList<>();
+    private List<PetDTO> petList = new ArrayList<>();
+    private List<ServiceDTO> serviceList = new ArrayList<>();
+
     private AppointmentAdapter adapter;
+    private AppointmentApi api;
     private SwipeRefreshLayout swipeRefreshLayout;
     private EditText etSearch;
     private ImageButton hamburger;
@@ -39,51 +56,57 @@ public class AppointmentFragment extends Fragment implements AppointmentAdapter.
                              Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.fragment_appointment, container, false);
 
+        api = RetrofitClient.getAppointmentApi(requireContext());
         hamburger = view.findViewById(R.id.btnHamburger);
 
-        loadAppointmentData(); // TODO: Replace with actual API call when backend is ready
         setupRecyclerView(view);
         setupSearch(view);
         setupSwipeRefresh(view);
+        loadAppointmentData();
+        loadPets();
+        loadServices();
 
-        FloatingActionButton fabAddAppointment = view.findViewById(R.id.fabAddAppointment);
-        fabAddAppointment.setOnClickListener(v -> openAppointmentDetails(-1));
 
-        //Make the hamburger button open the drawer from listFragment
+        FloatingActionButton fabAdd = view.findViewById(R.id.fabAddAppointment);
+        fabAdd.setOnClickListener(v -> openAppointmentDetails(-1));
+
         hamburger.setOnClickListener(v -> {
             ListFragment listFragment = (ListFragment) getParentFragment();
-            //if list fragment is found then use its helper function to open the drawer
-            if (listFragment != null) {
+            if (listFragment != null)
                 listFragment.openDrawer();
-            }
         });
 
         return view;
     }
 
-    // Sets up the search bar to filter appointments by customer name or service type
     private void setupSearch(View view) {
         etSearch = view.findViewById(R.id.etSearchAppointment);
         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) {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
                 filterAppointments(s.toString());
             }
-            @Override public void afterTextChanged(Editable s) {}
+
+            @Override
+            public void afterTextChanged(Editable s) {
+            }
         });
     }
 
-    // Filters the appointment list based on the search query
     private void filterAppointments(String query) {
         filteredList.clear();
         if (query.isEmpty()) {
             filteredList.addAll(appointmentList);
         } else {
             String lower = query.toLowerCase();
-            for (Appointment a : appointmentList) {
-                if (a.getCustomerName().toLowerCase().contains(lower)
-                        || a.getServiceType().toLowerCase().contains(lower)
-                        || a.getPetName().toLowerCase().contains(lower)) {
+            for (AppointmentDTO a : appointmentList) {
+                if ((a.getCustomerName() != null && a.getCustomerName().toLowerCase().contains(lower))
+                        || (a.getServiceType() != null && a.getServiceType().toLowerCase().contains(lower))
+                        || (a.getPetName() != null && a.getPetName().toLowerCase().contains(lower))) {
                     filteredList.add(a);
                 }
             }
@@ -91,43 +114,33 @@ public class AppointmentFragment extends Fragment implements AppointmentAdapter.
         adapter.notifyDataSetChanged();
     }
 
-    // Sets up pull-to-refresh: reloads data when user swipes down
     private void setupSwipeRefresh(View view) {
         swipeRefreshLayout = view.findViewById(R.id.swipeRefreshAppointment);
-        swipeRefreshLayout.setOnRefreshListener(() -> {
-            loadAppointmentData(); // TODO: Replace with actual API call when backend is ready
-            filterAppointments(etSearch.getText().toString());
-            swipeRefreshLayout.setRefreshing(false);
-        });
+        swipeRefreshLayout.setOnRefreshListener(this::loadAppointmentData);
     }
 
     private void openAppointmentDetails(int position) {
         AppointmentDetailFragment detailFragment = new AppointmentDetailFragment();
         Bundle args = new Bundle();
-        args.putInt("position", position);
 
         if (position != -1) {
-            Appointment appointment = filteredList.get(position);
-            // Find the real position in the full list for save/delete callbacks
-            int realPosition = appointmentList.indexOf(appointment);
-            args.putInt("position", realPosition);
-            args.putInt("appointmentId", appointment.getAppointmentId());
-            args.putString("customerName", appointment.getCustomerName());
-            args.putString("petName", appointment.getPetName());
-            args.putString("serviceType", appointment.getServiceType());
-            args.putString("appointmentDate", appointment.getAppointmentDate());
-            args.putString("appointmentTime", appointment.getAppointmentTime());
-            args.putString("status", appointment.getStatus());
+            AppointmentDTO a = filteredList.get(position);
+            args.putLong("appointmentId", a.getAppointmentId());
+            args.putString("appointmentDate", a.getAppointmentDate());
+            args.putString("appointmentTime", a.getAppointmentTime());
+            args.putString("appointmentStatus", a.getAppointmentStatus());
+            // IDs for pre-selecting spinners
+            if (a.getPetID() != null)      args.putLong("petId", a.getPetID());
+            if (a.getServiceId() != null)  args.putLong("serviceId", a.getServiceId());
+            if (a.getCustomerId() != null) args.putLong("customerId", a.getCustomerId());
+            if (a.getStoreId() != null)    args.putLong("storeId", a.getStoreId());
         }
 
         detailFragment.setArguments(args);
-        detailFragment.setAppointmentFragment(this);
-
-        ListFragment listFragment = (ListFragment) getParentFragment();
-        if (listFragment != null) listFragment.loadFragment(detailFragment);
+        ListFragment lf = (ListFragment) getParentFragment();
+        if (lf != null) lf.loadFragment(detailFragment);
     }
-
-    public void onAppointmentSaved(int position, Appointment appointment) {
+    public void onAppointmentSaved(int position, AppointmentDTO appointment) {
         if (position == -1) {
             appointmentList.add(appointment);
         } else {
@@ -146,21 +159,100 @@ public class AppointmentFragment extends Fragment implements AppointmentAdapter.
         openAppointmentDetails(position);
     }
 
-    // Helper function to load hardcoded sample data
-    // Replace with API call
     private void loadAppointmentData() {
-        appointmentList.clear();
-        appointmentList.add(new Appointment(1, "John Smith", "Buddy", "Grooming", "2026-03-10", "10:00 AM", "Confirmed"));
-        appointmentList.add(new Appointment(2, "Jane Doe", "Luna", "Vet Checkup", "2026-03-11", "02:00 PM", "Pending"));
-        appointmentList.add(new Appointment(3, "Bob Lee", "Max", "Training", "2026-03-12", "11:00 AM", "Confirmed"));
-        appointmentList.add(new Appointment(4, "Alice Brown", "Milo", "Grooming", "2026-03-13", "03:00 PM", "Cancelled"));
-        filteredList.clear();
-        filteredList.addAll(appointmentList);
+        if (swipeRefreshLayout != null)
+            swipeRefreshLayout.setRefreshing(true);
+        api.getAllAppointments(0, 100).enqueue(new Callback<PageResponse<AppointmentDTO>>() {
+            @Override
+            public void onResponse(Call<PageResponse<AppointmentDTO>> call,
+                                   Response<PageResponse<AppointmentDTO>> response) {
+                if (swipeRefreshLayout != null)
+                    swipeRefreshLayout.setRefreshing(false);
+                if (response.isSuccessful() && response.body() != null) {
+                    appointmentList.clear();
+                    appointmentList.addAll(response.body().getContent());
+                    filterAppointments(etSearch != null ? etSearch.getText().toString() : "");
+                } else {
+                    Log.e("AppointmentFragment", "Error: " + response.message());
+                    Toast.makeText(getContext(), "Failed to load appointments", Toast.LENGTH_SHORT).show();
+                }
+            }
+
+            @Override
+            public void onFailure(Call<PageResponse<AppointmentDTO>> call, Throwable t) {
+                if (swipeRefreshLayout != null)
+                    swipeRefreshLayout.setRefreshing(false);
+                Toast.makeText(getContext(), "Network error: " + t.getMessage(), Toast.LENGTH_SHORT).show();
+                Log.e("AppointmentFragment", t.getMessage());
+            }
+        });
+    }
+
+
+
+    // Load Pets
+    private void loadPets() {
+        PetApi petApi = RetrofitClient.getPetApi(requireContext());
+        petApi.getAllPets(0,100).enqueue(new Callback<PageResponse<PetDTO>>() {
+
+            @Override
+            public void onResponse(Call<PageResponse<PetDTO>> call, Response<PageResponse<PetDTO>> response) {
+                if (response.isSuccessful() && response.body() !=null) {
+                    petList.clear();
+                    petList.addAll(response.body().getContent());
+                }
+            }
+
+            @Override
+            public void onFailure(Call<PageResponse<PetDTO>> call, Throwable t) {
+
+                Log.e("AppointmentFragment", "Pet load error:" + t.getMessage());
+
+            }
+        });
+    }
+
+    // Load Services
+
+    private void loadServices() {
+        ServiceApi serviceApi = RetrofitClient.getServiceApi(requireContext());
+
+        serviceApi.getAllServices(0,100).enqueue(new Callback<PageResponse<ServiceDTO>>() {
+            @Override
+            public void onResponse(Call<PageResponse<ServiceDTO>> call, Response<PageResponse<ServiceDTO>> response) {
+                if (response.isSuccessful() && response.body() != null) {
+                    serviceList.clear();
+                    serviceList.addAll(response.body().getContent());
+
+                }
+            }
+
+            @Override
+            public void onFailure(Call<PageResponse<ServiceDTO>> call, Throwable t) {
+                Log.e("AppointmentFragmnet", "Service load error: " + t.getMessage());
+
+            }
+        });
+    }
+
+    private String getPetName(Long id) {
+        for (PetDTO p : petList) {
+            if (p.getPetId().equals(id)) return p.getPetName();
+
+        }
+        return  "";
+    }
+
+    private String getServiceName(Long id) {
+        for (ServiceDTO s : serviceList) {
+            if (s.getServiceId().equals(id))return s.getServiceName();
+        }
+        return "";
     }
 
     private void setupRecyclerView(View view) {
         RecyclerView recyclerView = view.findViewById(R.id.recyclerViewAppointments);
-        adapter = new AppointmentAdapter(filteredList, this); // adapter uses filteredList
+        adapter = new AppointmentAdapter(filteredList, this);
         recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
         recyclerView.setAdapter(adapter);
     }

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

@@ -1,178 +1,443 @@
 package com.example.petstoremobile.fragments.listfragments.detailfragments;
 
-
-// Uses InputValidator for detailed field validation and ActivityLogger to log all changes.
-
-import android.content.res.Configuration;
+import android.app.DatePickerDialog;
 import android.os.Bundle;
-
+import android.util.Log;
+import android.view.*;
+import android.widget.*;
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.core.content.ContextCompat;
+import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.Fragment;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.ArrayAdapter;
-import android.widget.Button;
-import android.widget.EditText;
-import android.widget.Spinner;
-import android.widget.TextView;
-import android.widget.Toast;
 import com.example.petstoremobile.R;
+import com.example.petstoremobile.api.*;
+import com.example.petstoremobile.dtos.*;
 import com.example.petstoremobile.fragments.ListFragment;
-import com.example.petstoremobile.fragments.listfragments.AppointmentFragment;
-import com.example.petstoremobile.models.Appointment;
-import com.example.petstoremobile.utils.ActivityLogger;
-import com.example.petstoremobile.utils.InputValidator;
+import java.util.*;
+import retrofit2.*;
 
 public class AppointmentDetailFragment extends Fragment {
 
     private TextView tvMode, tvAppointmentId;
-    private EditText etCustomerName, etPetName, etServiceType, etAppointmentDate, etAppointmentTime;
-    private Spinner spinnerStatus;
-    private Button btnSaveAppointment, btnDeleteAppointment, btnBack;
-    private int appointmentId;
-    private int position;
-    private boolean isEditing = false;
-    private AppointmentFragment appointmentFragment;
+    private EditText etAppointmentDate;
+    private Spinner spinnerPet, spinnerService, spinnerStatus, spinnerHour, spinnerMinute;
+    private Spinner spinnerCustomer, spinnerStore;
+    private Button btnSave, btnDelete, btnBack;
 
-    // Set the appointment fragment as parent so we refer back when save or delete is done
-    public void setAppointmentFragment(AppointmentFragment fragment) {
-        this.appointmentFragment = fragment;
-    }
+    private long appointmentId = -1;
+    private boolean isEditing = false;
+    private long preselectedPetId = -1;
+    private long preselectedServiceId = -1;
+    private long preselectedCustomerId = -1;
+    private long preselectedStoreId = -1;
+
+    private List<PetDTO> petList = new ArrayList<>();
+    private List<ServiceDTO> serviceList = new ArrayList<>();
+    private List<CustomerDTO> customerList = new ArrayList<>();
+    private List<StoreDTO> storeList = new ArrayList<>();
+    private List<AppointmentDTO> allAppointments = new ArrayList<>();
+
+    private final Integer[] HOURS = {9,10,11,12,13,14,15,16,17};
+    private final Integer[] MINUTES = {0,15,30,45};
+    private final String[] STATUSES = {"Booked","Completed","Cancelled"};
 
     @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container,
-                             Bundle savedInstanceState) {
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.fragment_appointment_detail, container, false);
-
         initViews(view);
-        setupSpinner();
+        setupSpinners();
+        setupDatePicker();
+        loadData();
         handleArguments();
 
-        btnBack.setOnClickListener(v -> {
-            ListFragment listFragment = (ListFragment) getParentFragment();
-            if (listFragment != null) {
-                listFragment.getChildFragmentManager().popBackStack();
-            }
-        });
-        btnSaveAppointment.setOnClickListener(v -> saveAppointment());
-        btnDeleteAppointment.setOnClickListener(v -> deleteAppointment());
-
+        btnBack.setOnClickListener(v -> navigateBack());
+        btnSave.setOnClickListener(v -> saveAppointment());
+        btnDelete.setOnClickListener(v -> confirmDelete());
         return view;
     }
 
-    // Validates all fields using InputValidator, then saves the appointment
-    private void saveAppointment() {
-        // Validate all inputs using InputValidator utility
-        if (!InputValidator.isNotEmpty(etCustomerName, "Customer Name")) return;
-        if (!InputValidator.isNotEmpty(etPetName, "Pet Name")) return;
-        if (!InputValidator.isNotEmpty(etServiceType, "Service Type")) return;
-        if (!InputValidator.isValidDate(etAppointmentDate)) return;
-        if (!InputValidator.isValidTime(etAppointmentTime)) return;
+    private void initViews(View v) {
+        tvMode           = v.findViewById(R.id.tvApptMode);
+        tvAppointmentId  = v.findViewById(R.id.tvAppointmentId);
+        etAppointmentDate= v.findViewById(R.id.etAppointmentDate);
+        spinnerPet       = v.findViewById(R.id.spinnerPet);
+        spinnerService   = v.findViewById(R.id.spinnerService);
+        spinnerStatus    = v.findViewById(R.id.spinnerAppointmentStatus);
+        spinnerHour      = v.findViewById(R.id.spinnerHour);
+        spinnerMinute    = v.findViewById(R.id.spinnerMinute);
+        spinnerCustomer  = v.findViewById(R.id.spinnerCustomer);
+        spinnerStore     = v.findViewById(R.id.spinnerStore);
+        btnSave          = v.findViewById(R.id.btnSaveAppointment);
+        btnDelete        = v.findViewById(R.id.btnDeleteAppointment);
+        btnBack          = v.findViewById(R.id.btnApptBack);
+    }
 
-        String customerName = etCustomerName.getText().toString().trim();
-        String petName = etPetName.getText().toString().trim();
-        String serviceType = etServiceType.getText().toString().trim();
-        String date = etAppointmentDate.getText().toString().trim();
-        String time = etAppointmentTime.getText().toString().trim();
-        String status = spinnerStatus.getSelectedItem().toString();
+    private void setupSpinners() {
+        spinnerStatus.setAdapter(new ArrayAdapter<>(requireContext(),
+                android.R.layout.simple_spinner_item, STATUSES));
 
-        try {
-            if (isEditing) {
-                // TODO: Replace with actual API PUT call when backend is ready
-                Appointment updated = new Appointment(appointmentId, customerName, petName, serviceType, date, time, status);
-                if (appointmentFragment != null) appointmentFragment.onAppointmentSaved(position, updated);
-                ActivityLogger.logChange(requireContext(), "Appointment", "UPDATED", appointmentId);
-                Toast.makeText(getContext(), "Appointment updated.", Toast.LENGTH_SHORT).show();
-            } else {
-                // TODO: Replace with actual API POST call when backend is ready
-                Appointment newAppt = new Appointment(0, customerName, petName, serviceType, date, time, status);
-                if (appointmentFragment != null) appointmentFragment.onAppointmentSaved(-1, newAppt);
-                ActivityLogger.log(requireContext(), "Added new Appointment for customer: " + customerName);
-                Toast.makeText(getContext(), "Appointment added.", Toast.LENGTH_SHORT).show();
+        String[] hours = new String[HOURS.length];
+        for (int i = 0; i < HOURS.length; i++)
+            hours[i] = String.format("%02d:00", HOURS[i]);
+        spinnerHour.setAdapter(new ArrayAdapter<>(requireContext(),
+                android.R.layout.simple_spinner_item, hours));
+        spinnerMinute.setAdapter(new ArrayAdapter<>(requireContext(),
+                android.R.layout.simple_spinner_item, new String[]{"00","15","30","45"}));
+    }
+
+    private void setupDatePicker() {
+        etAppointmentDate.setOnClickListener(v -> {
+            Calendar c = Calendar.getInstance();
+            DatePickerDialog d = new DatePickerDialog(requireContext(),
+                    (dp,y,m,d1) -> etAppointmentDate.setText(
+                            String.format("%04d-%02d-%02d", y, m+1, d1)),
+                    c.get(Calendar.YEAR), c.get(Calendar.MONTH),
+                    c.get(Calendar.DAY_OF_MONTH));
+            d.getDatePicker().setMinDate(System.currentTimeMillis() - 1000);
+            d.show();
+        });
+    }
+
+    private void loadData() {
+        loadPets();
+        loadServices();
+        loadCustomers();
+        loadStores();
+        loadAllAppointments();
+    }
+
+    private void loadPets() {
+        RetrofitClient.getPetApi(requireContext()).getAllPets(0, 200)
+                .enqueue(new Callback<PageResponse<PetDTO>>() {
+                    public void onResponse(Call<PageResponse<PetDTO>> c, Response<PageResponse<PetDTO>> r) {
+                        if (r.isSuccessful() && r.body() != null) {
+                            petList = r.body().getContent();
+                            populatePetSpinner();
+                        }
+                    }
+                    public void onFailure(Call<PageResponse<PetDTO>> c, Throwable t) {
+                        Log.e("APPT", "Pet load failed: " + t.getMessage());
+                    }
+                });
+    }
+
+    private void populatePetSpinner() {
+        List<String> names = new ArrayList<>();
+        names.add("-- Select Pet --");
+        for (PetDTO p : petList) names.add(p.getPetName());
+        spinnerPet.setAdapter(new ArrayAdapter<>(requireContext(),
+                android.R.layout.simple_spinner_item, names));
+        if (preselectedPetId != -1) {
+            for (int i = 0; i < petList.size(); i++) {
+                if (petList.get(i).getPetId().equals(preselectedPetId)) {
+                    spinnerPet.setSelection(i + 1); break;
+                }
             }
-            // Go back to list
-            ListFragment listFragment = (ListFragment) getParentFragment();
-            if (listFragment != null) listFragment.getChildFragmentManager().popBackStack();
-        } catch (Exception e) {
-            ActivityLogger.logException(requireContext(), "AppointmentDetailFragment.saveAppointment", e);
-            Toast.makeText(getContext(), "Error saving appointment.", Toast.LENGTH_SHORT).show();
         }
     }
 
-    // Deletes the appointment and logs the action
-    private void deleteAppointment() {
-        try {
-            // TODO: Replace with actual API DELETE call when backend is ready
-            if (appointmentFragment != null) appointmentFragment.onAppointmentDeleted(position);
-            ActivityLogger.logChange(requireContext(), "Appointment", "DELETED", appointmentId);
-            Toast.makeText(getContext(), "Appointment deleted.", Toast.LENGTH_SHORT).show();
-            ListFragment listFragment = (ListFragment) getParentFragment();
-            if (listFragment != null) listFragment.getChildFragmentManager().popBackStack();
-        } catch (Exception e) {
-            ActivityLogger.logException(requireContext(), "AppointmentDetailFragment.deleteAppointment", e);
-            Toast.makeText(getContext(), "Error deleting appointment.", Toast.LENGTH_SHORT).show();
+    private void loadServices() {
+        RetrofitClient.getServiceApi(requireContext()).getAllServices(0, 200)
+                .enqueue(new Callback<PageResponse<ServiceDTO>>() {
+                    public void onResponse(Call<PageResponse<ServiceDTO>> c, Response<PageResponse<ServiceDTO>> r) {
+                        if (r.isSuccessful() && r.body() != null) {
+                            serviceList = r.body().getContent();
+                            populateServiceSpinner();
+                        }
+                    }
+                    public void onFailure(Call<PageResponse<ServiceDTO>> c, Throwable t) {
+                        Log.e("APPT", "Service load failed: " + t.getMessage());
+                    }
+                });
+    }
+
+    private void populateServiceSpinner() {
+        List<String> names = new ArrayList<>();
+        names.add("-- Select Service --");
+        for (ServiceDTO s : serviceList) names.add(s.getServiceName());
+        spinnerService.setAdapter(new ArrayAdapter<>(requireContext(),
+                android.R.layout.simple_spinner_item, names));
+        if (preselectedServiceId != -1) {
+            for (int i = 0; i < serviceList.size(); i++) {
+                if (serviceList.get(i).getServiceId().equals(preselectedServiceId)) {
+                    spinnerService.setSelection(i + 1); break;
+                }
+            }
         }
     }
 
-    // Determines if the fragment is in add or edit mode and populates fields accordingly
+    private void loadCustomers() {
+        RetrofitClient.getCustomerApi(requireContext()).getAllCustomers(0, 200)
+                .enqueue(new Callback<PageResponse<CustomerDTO>>() {
+                    public void onResponse(Call<PageResponse<CustomerDTO>> c, Response<PageResponse<CustomerDTO>> r) {
+                        if (r.isSuccessful() && r.body() != null) {
+                            customerList = r.body().getContent();
+                            populateCustomerSpinner();
+                        }
+                    }
+                    public void onFailure(Call<PageResponse<CustomerDTO>> c, Throwable t) {
+                        Log.e("APPT", "Customer load failed: " + t.getMessage());
+                    }
+                });
+    }
+
+    private void populateCustomerSpinner() {
+        List<String> names = new ArrayList<>();
+        names.add("-- Select Customer --");
+        for (CustomerDTO c : customerList)
+            names.add(c.getFirstName() + " " + c.getLastName());
+        spinnerCustomer.setAdapter(new ArrayAdapter<>(requireContext(),
+                android.R.layout.simple_spinner_item, names));
+        if (preselectedCustomerId != -1) {
+            for (int i = 0; i < customerList.size(); i++) {
+                if (customerList.get(i).getCustomerId().equals(preselectedCustomerId)) {
+                    spinnerCustomer.setSelection(i + 1); break;
+                }
+            }
+        }
+    }
+
+    private void loadStores() {
+        RetrofitClient.getStoreApi(requireContext()).getAllStores(0, 50)
+                .enqueue(new Callback<PageResponse<StoreDTO>>() {
+                    public void onResponse(Call<PageResponse<StoreDTO>> c, Response<PageResponse<StoreDTO>> r) {
+                        if (r.isSuccessful() && r.body() != null) {
+                            storeList = r.body().getContent();
+                            populateStoreSpinner();
+                        }
+                    }
+                    public void onFailure(Call<PageResponse<StoreDTO>> c, Throwable t) {
+                        Log.e("APPT", "Store load failed: " + t.getMessage());
+                    }
+                });
+    }
+
+    private void populateStoreSpinner() {
+        List<String> names = new ArrayList<>();
+        names.add("-- Select Store --");
+        for (StoreDTO s : storeList) names.add(s.getStoreName());
+        spinnerStore.setAdapter(new ArrayAdapter<>(requireContext(),
+                android.R.layout.simple_spinner_item, names));
+        if (preselectedStoreId != -1) {
+            for (int i = 0; i < storeList.size(); i++) {
+                if (storeList.get(i).getStoreId().equals(preselectedStoreId)) {
+                    spinnerStore.setSelection(i + 1); break;
+                }
+            }
+        }
+    }
+
+    private void loadAllAppointments() {
+        RetrofitClient.getAppointmentApi(requireContext()).getAllAppointments(0, 500)
+                .enqueue(new Callback<PageResponse<AppointmentDTO>>() {
+                    public void onResponse(Call<PageResponse<AppointmentDTO>> c, Response<PageResponse<AppointmentDTO>> r) {
+                        if (r.isSuccessful() && r.body() != null)
+                            allAppointments = r.body().getContent();
+                    }
+                    public void onFailure(Call<PageResponse<AppointmentDTO>> c, Throwable t) {}
+                });
+    }
+
     private void handleArguments() {
-        if (getArguments() != null && getArguments().containsKey("appointmentId")) {
+        Bundle a = getArguments();
+        if (a != null && a.containsKey("appointmentId")) {
             isEditing = true;
-            appointmentId = getArguments().getInt("appointmentId");
-            position = getArguments().getInt("position");
+            appointmentId       = a.getLong("appointmentId");
+            preselectedPetId    = a.getLong("petId", -1);
+            preselectedServiceId= a.getLong("serviceId", -1);
+            preselectedCustomerId = a.getLong("customerId", -1);
+            preselectedStoreId  = a.getLong("storeId", -1);
+
             tvMode.setText("Edit Appointment");
             tvAppointmentId.setText("ID: " + appointmentId);
-            etCustomerName.setText(getArguments().getString("customerName"));
-            etPetName.setText(getArguments().getString("petName"));
-            etServiceType.setText(getArguments().getString("serviceType"));
-            etAppointmentDate.setText(getArguments().getString("appointmentDate"));
-            etAppointmentTime.setText(getArguments().getString("appointmentTime"));
-            String status = getArguments().getString("status");
-            if ("Confirmed".equals(status)) spinnerStatus.setSelection(0);
-            else if ("Pending".equals(status)) spinnerStatus.setSelection(1);
-            else spinnerStatus.setSelection(2);
-            btnDeleteAppointment.setVisibility(View.VISIBLE);
+            tvAppointmentId.setVisibility(View.VISIBLE);
+            etAppointmentDate.setText(a.getString("appointmentDate"));
+            btnDelete.setVisibility(View.VISIBLE);
+
+            // Pre-fill time spinners
+            String time = a.getString("appointmentTime", "09:00");
+            if (time.length() > 5) time = time.substring(0, 5);
+            String[] parts = time.split(":");
+            if (parts.length == 2) {
+                int hour = Integer.parseInt(parts[0]);
+                int min  = Integer.parseInt(parts[1]);
+                for (int i = 0; i < HOURS.length; i++)
+                    if (HOURS[i] == hour) { spinnerHour.setSelection(i); break; }
+                for (int i = 0; i < MINUTES.length; i++)
+                    if (MINUTES[i] == min) { spinnerMinute.setSelection(i); break; }
+            }
+
+            // Pre-fill status
+            String status = a.getString("appointmentStatus", "Booked");
+            for (int i = 0; i < STATUSES.length; i++)
+                if (STATUSES[i].equals(status)) { spinnerStatus.setSelection(i); break; }
+
         } else {
-            isEditing = false;
             tvMode.setText("Add Appointment");
+            btnDelete.setVisibility(View.GONE);
             tvAppointmentId.setVisibility(View.GONE);
-            btnDeleteAppointment.setVisibility(View.GONE);
-            btnSaveAppointment.setText("Add");
         }
     }
 
-    private void initViews(View view) {
-        tvMode = view.findViewById(R.id.tvApptMode);
-        tvAppointmentId = view.findViewById(R.id.tvAppointmentId);
-        etCustomerName = view.findViewById(R.id.etCustomerName);
-        etPetName = view.findViewById(R.id.etApptPetName);
-        etServiceType = view.findViewById(R.id.etServiceType);
-        etAppointmentDate = view.findViewById(R.id.etAppointmentDate);
-        etAppointmentTime = view.findViewById(R.id.etAppointmentTime);
-        spinnerStatus = view.findViewById(R.id.spinnerAppointmentStatus);
-        btnSaveAppointment = view.findViewById(R.id.btnSaveAppointment);
-        btnDeleteAppointment = view.findViewById(R.id.btnDeleteAppointment);
-        btnBack = view.findViewById(R.id.btnApptBack);
+    private void saveAppointment() {
+        if (spinnerCustomer.getSelectedItemPosition() == 0) {
+            Toast.makeText(getContext(), "Select a customer", Toast.LENGTH_SHORT).show(); return;
+        }
+        if (spinnerStore.getSelectedItemPosition() == 0) {
+            Toast.makeText(getContext(), "Select a store", Toast.LENGTH_SHORT).show(); return;
+        }
+        if (spinnerPet.getSelectedItemPosition() == 0) {
+            Toast.makeText(getContext(), "Select a pet", Toast.LENGTH_SHORT).show(); return;
+        }
+        if (spinnerService.getSelectedItemPosition() == 0) {
+            Toast.makeText(getContext(), "Select a service", Toast.LENGTH_SHORT).show(); return;
+        }
+        String date = etAppointmentDate.getText().toString().trim();
+        if (date.isEmpty()) {
+            Toast.makeText(getContext(), "Select a date", Toast.LENGTH_SHORT).show(); return;
+        }
+
+        CustomerDTO customer = customerList.get(spinnerCustomer.getSelectedItemPosition() - 1);
+        StoreDTO store       = storeList.get(spinnerStore.getSelectedItemPosition() - 1);
+        PetDTO pet           = petList.get(spinnerPet.getSelectedItemPosition() - 1);
+        ServiceDTO service   = serviceList.get(spinnerService.getSelectedItemPosition() - 1);
+
+        String time = String.format("%02d:%02d",
+                HOURS[spinnerHour.getSelectedItemPosition()],
+                MINUTES[spinnerMinute.getSelectedItemPosition()]);
+        String status = STATUSES[spinnerStatus.getSelectedItemPosition()];
+
+
+        // Validate future date+time if status is Booked
+        if ("Booked".equalsIgnoreCase(status)) {
+            try {
+                String[] dateParts = date.split("-");
+                String[] timeParts = time.split(":");
+                Calendar selected = Calendar.getInstance();
+                selected.set(
+                        Integer.parseInt(dateParts[0]),
+                        Integer.parseInt(dateParts[1]) - 1,
+                        Integer.parseInt(dateParts[2]),
+                        Integer.parseInt(timeParts[0]),
+                        Integer.parseInt(timeParts[1]),
+                        0
+                );
+                if (selected.before(Calendar.getInstance())) {
+                    showErrorDialog("Invalid Time",
+                            "Booked appointments must be in the future. " +
+                                    "Please select a future date and time.");
+                    return;
+                }
+            } catch (Exception e) {
+                Log.e("APPT_SAVE", "Date parse error: " + e.getMessage());
+            }
+        }
+
+        // Build DTO with all required IDs
+        AppointmentDTO dto = new AppointmentDTO(
+                customer.getCustomerId(),
+                store.getStoreId(),
+                service.getServiceId(),
+                date,
+                time,
+                status,
+                Collections.singletonList(pet.getPetId())
+        );
+
+        Log.d("APPT_SAVE", "customerId=" + customer.getCustomerId()
+                + " storeId=" + store.getStoreId()
+                + " serviceId=" + service.getServiceId()
+                + " petId=" + pet.getPetId()
+                + " date=" + date + " time=" + time);
+
+        AppointmentApi api = RetrofitClient.getAppointmentApi(requireContext());
+        if (isEditing) {
+            api.updateAppointment(appointmentId, dto).enqueue(simpleCallback("Updated"));
+        } else {
+            api.createAppointment(dto).enqueue(simpleCallback("Saved"));
+        }
     }
 
-    private void setupSpinner() {
-        ArrayAdapter<String> adapter = new ArrayAdapter<String>(requireContext(),
-                android.R.layout.simple_spinner_item,
-                new String[]{"Confirmed", "Pending", "Cancelled"}) {
+    private Callback<AppointmentDTO> simpleCallback(String msg) {
+        return new Callback<>() {
+            public void onResponse(Call<AppointmentDTO> c, Response<AppointmentDTO> r) {
+                Log.d("APPT_SAVE", "Response: " + r.code());
+                if (r.isSuccessful()) {
+                    Toast.makeText(getContext(), msg, Toast.LENGTH_SHORT).show();
+                    navigateBack();
+                } else {
+                    try {
+                        String errorBody = r.errorBody().string();
+                        Log.e("APPT_SAVE", "Error: " + errorBody);
 
-            //Override the getView method for the spinner to make the text color darker for more readability
-            @NonNull
-            @Override
-            public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
-                View view = super.getView(position, convertView, parent);
-                ((TextView) view).setTextColor(ContextCompat.getColor(requireContext(), R.color.text_dark));
-                return view;
+                        // Show proper dialog based on error type
+                        if (errorBody.toLowerCase().contains("future")) {
+                            showErrorDialog("Invalid Date/Time",
+                                    "Booked appointments must be scheduled in the future. " +
+                                            "Please select a future date and time.");
+                      //------------------------------------------
+                        } else if (errorBody.toLowerCase().contains("not available") ||
+                                errorBody.toLowerCase().contains("time is not available")) {
+                            showNoAvailabilityDialog();
+                        } else if (r.code() == 404) {
+                            showErrorDialog("Not Found",
+                                    "The selected pet, customer or service was not found.");
+                        } else if (r.code() == 403) {
+                            showErrorDialog("Access Denied",
+                                    "You don't have permission to perform this action.");
+                        } else if (r.code() == 400) {
+                            showErrorDialog("Invalid Request", errorBody);
+                        } else {
+                            showErrorDialog("Error", "Something went wrong. Please try again.");
+                        }
+                        //-----------------------------
+                    } catch (Exception e) {
+                        Log.e("APPT_SAVE", "Failed to read error body");
+                        showErrorDialog("Error", "Something went wrong. Please try again.");
+                    }
+                }
+            }
+
+            public void onFailure(Call<AppointmentDTO> c, Throwable t) {
+                Log.e("APPT_SAVE", "Failure: " + t.getMessage());
+                Toast.makeText(getContext(), "Network error", Toast.LENGTH_SHORT).show();
             }
         };
-        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        spinnerStatus.setAdapter(adapter);
     }
-}
+
+    private void showNoAvailabilityDialog() {
+        new AlertDialog.Builder(requireContext())
+                .setTitle("No Availability")
+                .setMessage("This time slot is already booked for the selected service and store. Please choose a different time or date.")
+                .setPositiveButton("Change Time", (d, w) -> d.dismiss())
+                .setNegativeButton("Cancel Booking", (d, w) -> navigateBack())
+                .setCancelable(false)
+                .show();
+    }
+
+    private void showErrorDialog(String title, String message) {
+        new AlertDialog.Builder(requireContext())
+                .setTitle(title)
+                .setMessage(message)
+                .setPositiveButton("OK", null)
+                .show();
+    }
+    private void confirmDelete() {
+        new AlertDialog.Builder(requireContext())
+                .setTitle("Delete Appointment?")
+                .setPositiveButton("Yes", (d, w) ->
+                        RetrofitClient.getAppointmentApi(requireContext())
+                                .deleteAppointment(appointmentId)
+                                .enqueue(new Callback<Void>() {
+                                    public void onResponse(Call<Void> c, Response<Void> r) { navigateBack(); }
+                                    public void onFailure(Call<Void> c, Throwable t) {
+                                        Toast.makeText(getContext(), "Delete failed", Toast.LENGTH_SHORT).show();
+                                    }
+                                }))
+                .setNegativeButton("No", null).show();
+    }
+
+    private void navigateBack() {
+        ListFragment lf = (ListFragment) getParentFragment();
+        if (lf != null) lf.getChildFragmentManager().popBackStack();
+    }
+}