first commit

app/src/main/java/com/example/pap/LoginActivity.java

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+package com.example.pap;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+import androidx.appcompat.app.AppCompatActivity;
+
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import retrofit2.Retrofit;
+import retrofit2.converter.gson.GsonConverterFactory;
+
+public class LoginActivity extends AppCompatActivity {
+
+    private EditText etLoginEmail, etLoginPassword;
+    private Button btnLogin;
+    private TextView tvGoToRegister;
+    private SupabaseApi api;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_login);
+
+        // 1. Inicializar os componentes
+        etLoginEmail = findViewById(R.id.etLoginEmail);
+        etLoginPassword = findViewById(R.id.etLoginPassword);
+        btnLogin = findViewById(R.id.btnLogin);
+        tvGoToRegister = findViewById(R.id.tvGoToRegister);
+
+        // 2. Iniciar a comunicação com a API do Supabase
+        Retrofit retrofit = new Retrofit.Builder()
+                .baseUrl(SupabaseConfig.URL)
+                .addConverterFactory(GsonConverterFactory.create())
+                .build();
+        api = retrofit.create(SupabaseApi.class);
+
+        // 3. Configurar os cliques
+        btnLogin.setOnClickListener(v -> efetuarLogin());
+
+        tvGoToRegister.setOnClickListener(v -> {
+            Intent intent = new Intent(LoginActivity.this, RegisterActivity.class);
+            startActivity(intent);
+        });
+    }
+
+    private void efetuarLogin() {
+        String email = etLoginEmail.getText().toString().trim();
+        String password = etLoginPassword.getText().toString().trim();
+
+        // Validação básica
+        if (email.isEmpty() || password.isEmpty()) {
+            Toast.makeText(this, "Preencha o email e a password!", Toast.LENGTH_SHORT).show();
+            return;
+        }
+
+        UserCredentials credentials = new UserCredentials(email, password);
+
+        // Faz o pedido de Login ao Supabase
+        api.login(SupabaseConfig.API_KEY, credentials).enqueue(new Callback<SupabaseResponse>() {
+            @Override
+            public void onResponse(Call<SupabaseResponse> call, Response<SupabaseResponse> response) {
+                if (response.isSuccessful() && response.body() != null) {
+
+                    // Login com sucesso! Vai para a Home
+                    Toast.makeText(LoginActivity.this, "Login com sucesso!", Toast.LENGTH_SHORT).show();
+                    Intent intent = new Intent(LoginActivity.this, HomeActivity.class);
+                    startActivity(intent);
+                    finish(); // Fecha a tela de login
+
+                } else {
+                    // SE DER ERRO (ex: 404, 400), MOSTRA O LINK EXATO E O CÓDIGO
+                    String urlQueFalhou = response.raw().request().url().toString();
+                    if (response.code() == 400) {
+                        Toast.makeText(LoginActivity.this, "Email ou password incorretos!", Toast.LENGTH_LONG).show();
+                    } else {
+                        Toast.makeText(LoginActivity.this, "Erro " + response.code() + "! Link: " + urlQueFalhou, Toast.LENGTH_LONG).show();
+                    }
+                }
+            }
+
+            @Override
+            public void onFailure(Call<SupabaseResponse> call, Throwable t) {
+                Toast.makeText(LoginActivity.this, "Falha na ligação: " + t.getMessage(), Toast.LENGTH_SHORT).show();
+            }
+        });
+    }
+}