...

app/src/main/java/com/example/pap_teste/GerirMesasActivity.java

@@ -21,6 +21,7 @@ import com.google.firebase.database.DatabaseError;
 import com.google.firebase.database.DatabaseReference;
 import com.google.firebase.database.FirebaseDatabase;
 import com.google.firebase.database.ValueEventListener;
+import com.google.firebase.auth.FirebaseAuth;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -86,9 +87,12 @@ public class GerirMesasActivity extends AppCompatActivity {
             public void onDataChange(@NonNull DataSnapshot snapshot) {
                 mesas.clear();
                 adapter.clear();
+                String currentUserEmail = FirebaseAuth.getInstance().getCurrentUser() != null 
+                        ? FirebaseAuth.getInstance().getCurrentUser().getEmail() 
+                        : "";
                 for (DataSnapshot postSnapshot : snapshot.getChildren()) {
                     Mesa mesa = postSnapshot.getValue(Mesa.class);
-                    if (mesa != null) {
+                    if (mesa != null && (mesa.getRestauranteEmail() == null || mesa.getRestauranteEmail().equals(currentUserEmail))) {
                         // Ensure the ID is set from the snapshot key if it's missing in the value
                         mesa.setId(postSnapshot.getKey());
                         mesas.add(mesa);
@@ -184,10 +188,13 @@ public class GerirMesasActivity extends AppCompatActivity {
 
         Mesa existente = findMesa(numero);
         String mesaId;
+        String currentUserEmail = FirebaseAuth.getInstance().getCurrentUser() != null 
+                ? FirebaseAuth.getInstance().getCurrentUser().getEmail() 
+                : "";
 
         if (existente == null) {
             mesaId = mDatabase.push().getKey();
-            Mesa novaMesa = new Mesa(mesaId, numero, capacidade, estado);
+            Mesa novaMesa = new Mesa(mesaId, numero, capacidade, estado, currentUserEmail);
             if (mesaId != null) {
                 mDatabase.child(mesaId).setValue(novaMesa);
             }

app/src/main/java/com/example/pap_teste/NovaReservaActivity.java

@@ -164,10 +164,11 @@ public class NovaReservaActivity extends AppCompatActivity {
 
     private void saveReservation() {
         android.widget.EditText etPartySize = findViewById(R.id.etPartySize);
-        int partySize = 0;
+        int val = 0;
         try {
-            partySize = Integer.parseInt(etPartySize.getText().toString());
+            val = Integer.parseInt(etPartySize.getText().toString());
         } catch (Exception e) {}
+        final int partySize = val;
 
         if (selectedDate == null || selectedTime == null || partySize == 0) {
             android.widget.Toast.makeText(this, "Por favor, selecione data, hora e número de pessoas.",
@@ -175,6 +176,86 @@ public class NovaReservaActivity extends AppCompatActivity {
             return;
         }
 
+        String restEmail = selectedRestaurant.getEmail();
+
+        com.google.firebase.database.DatabaseReference mesasRef = com.google.firebase.database.FirebaseDatabase.getInstance().getReference("Mesas");
+        
+        mesasRef.addListenerForSingleValueEvent(new com.google.firebase.database.ValueEventListener() {
+            @Override
+            public void onDataChange(@androidx.annotation.NonNull com.google.firebase.database.DataSnapshot snapshot) {
+                int totalMesas = 0;
+                for (com.google.firebase.database.DataSnapshot ds : snapshot.getChildren()) {
+                    com.example.pap_teste.models.Mesa m = ds.getValue(com.example.pap_teste.models.Mesa.class);
+                    if (m != null && restEmail.equals(m.getRestauranteEmail())) {
+                        totalMesas++;
+                    }
+                }
+
+                if (totalMesas == 0) {
+                    proceedWithReservation(partySize);
+                    return;
+                }
+
+                checkReservationsAndSave(totalMesas, partySize);
+            }
+
+            @Override
+            public void onCancelled(@androidx.annotation.NonNull com.google.firebase.database.DatabaseError error) {
+                proceedWithReservation(partySize);
+            }
+        });
+    }
+
+    private void checkReservationsAndSave(int totalMesas, final int partySize) {
+        String restEmail = selectedRestaurant.getEmail();
+        com.google.firebase.database.DatabaseReference reservasRef = com.google.firebase.database.FirebaseDatabase.getInstance().getReference("reservas");
+
+        reservasRef.orderByChild("restauranteEmail").equalTo(restEmail).addListenerForSingleValueEvent(new com.google.firebase.database.ValueEventListener() {
+            @Override
+            public void onDataChange(@androidx.annotation.NonNull com.google.firebase.database.DataSnapshot snapshot) {
+                int ocupadas = 0;
+                java.util.Map<String, Integer> ocupacaoPorHora = new java.util.HashMap<>();
+
+                for (com.google.firebase.database.DataSnapshot ds : snapshot.getChildren()) {
+                    com.example.pap_teste.models.Reserva r = ds.getValue(com.example.pap_teste.models.Reserva.class);
+                    if (r != null && selectedDate.equals(r.getData()) && !"Cancelada".equals(r.getEstado()) && !"Recusada".equals(r.getEstado())) {
+                        int count = ocupacaoPorHora.getOrDefault(r.getHora(), 0) + 1;
+                        ocupacaoPorHora.put(r.getHora(), count);
+                        if (selectedTime.equals(r.getHora())) {
+                            ocupadas++;
+                        }
+                    }
+                }
+
+                if (ocupadas >= totalMesas) {
+                    String sugestao = "";
+                    String[] horasComuns = {"12:00", "12:30", "13:00", "13:30", "14:00", "19:00", "19:30", "20:00", "20:30", "21:00", "21:30", "22:00"};
+                    for (String h : horasComuns) {
+                        if (ocupacaoPorHora.getOrDefault(h, 0) < totalMesas && !h.equals(selectedTime)) {
+                            sugestao = h;
+                            break; // Encontramos a primeira sugestão livre
+                        }
+                    }
+                    String msg = "Não há mesas disponíveis para as " + selectedTime + ".";
+                    if (!sugestao.isEmpty()) {
+                        msg += " Sugestão: tente reservar para as " + sugestao + ".";
+                    } else {
+                        msg += " Tente para outro dia.";
+                    }
+                    android.widget.Toast.makeText(NovaReservaActivity.this, msg, android.widget.Toast.LENGTH_LONG).show();
+                } else {
+                    proceedWithReservation(partySize);
+                }
+            }
+
+            @Override
+            public void onCancelled(@androidx.annotation.NonNull com.google.firebase.database.DatabaseError error) {
+                 proceedWithReservation(partySize);
+            }
+        });
+    }
+
+    private void proceedWithReservation(int partySize) {
         String userEmail = com.google.firebase.auth.FirebaseAuth.getInstance().getCurrentUser() != null
                 ? com.google.firebase.auth.FirebaseAuth.getInstance().getCurrentUser().getEmail()
                 : "cliente@teste.com";
@@ -196,11 +277,11 @@ public class NovaReservaActivity extends AppCompatActivity {
             ref.child(id).setValue(reserva).addOnCompleteListener(task -> {
                 if (task.isSuccessful()) {
                     android.widget.Toast
-                            .makeText(this, "Reserva solicitada com sucesso!", android.widget.Toast.LENGTH_SHORT)
+                            .makeText(NovaReservaActivity.this, "Reserva solicitada com sucesso!", android.widget.Toast.LENGTH_SHORT)
                             .show();
                     finish();
                 } else {
-                    android.widget.Toast.makeText(this, "Erro ao salvar reserva.", android.widget.Toast.LENGTH_SHORT)
+                    android.widget.Toast.makeText(NovaReservaActivity.this, "Erro ao salvar reserva.", android.widget.Toast.LENGTH_SHORT)
                             .show();
                 }
             });

app/src/main/java/com/example/pap_teste/models/Mesa.java

@@ -5,16 +5,18 @@ public class Mesa {
     private int numero;
     private int capacidade;
     private String estado;
+    private String restauranteEmail;
 
     public Mesa() {
         // Default constructor required for calls to DataSnapshot.getValue(Mesa.class)
     }
 
-    public Mesa(String id, int numero, int capacidade, String estado) {
+    public Mesa(String id, int numero, int capacidade, String estado, String restauranteEmail) {
         this.id = id;
         this.numero = numero;
         this.capacidade = capacidade;
         this.estado = estado;
+        this.restauranteEmail = restauranteEmail;
     }
 
     public String getId() {
@@ -49,6 +51,14 @@ public class Mesa {
         this.estado = estado;
     }
 
+    public String getRestauranteEmail() {
+        return restauranteEmail;
+    }
+
+    public void setRestauranteEmail(String restauranteEmail) {
+        this.restauranteEmail = restauranteEmail;
+    }
+
     @Override
     public String toString() {
         return "Mesa " + numero;

app/src/main/res/drawable/ic_visibility.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#757575"
+        android:pathData="M12,4.5C7,4.5 2.73,7.61 1,12c1.73,4.39 5.99,7.5 11,7.5s9.27,-3.11 11,-7.5c-1.73,-4.39 -6,-7.5 -11,-7.5zM12,17c-2.76,0 -5,-2.24 -5,-5s2.24,-5 5,-5 5,2.24 5,5 -2.24,5 -5,5zM12,9c-1.66,0 -3,1.34 -3,3s1.34,3 3,3 3,-1.34 3,-3 -1.34,-3 -3,-3z"/>
+</vector>

app/src/main/res/drawable/ic_visibility_off.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#757575"
+        android:pathData="M12,7c2.76,0 5,2.24 5,5 0,0.65 -0.13,1.26 -0.36,1.83l2.92,2.92c1.51,-1.26 2.7,-2.89 3.43,-4.75 -1.73,-4.39 -6,-7.5 -11,-7.5 -1.4,0 -2.74,0.25 -3.98,0.7l2.16,2.16C10.74,7.13 11.35,7 12,7zM2,4.27l2.28,2.28 0.46,0.46C3.08,8.3 1.78,10.02 1,12c1.73,4.39 5.99,7.5 11,7.5 1.55,0 3.03,-0.3 4.38,-0.84l0.42,0.42L19.73,22 21,20.73 3.27,3 2,4.27zM7.53,9.8l1.55,1.55c-0.05,0.21 -0.08,0.43 -0.08,0.65 0,1.66 1.34,3 3,3 0.22,0 0.44,-0.03 0.65,-0.08l1.55,1.55c-0.67,0.33 -1.41,0.53 -2.2,0.53 -2.76,0 -5,-2.24 -5,-5 0,-0.79 0.2,-1.53 0.53,-2.2zM11.84,9.02l3.15,3.15 0.02,-0.16c0,-1.66 -1.34,-3 -3,-3l-0.17,0.01z"/>
+</vector>