movemeet/movemeet

package com.sdp.movemeet.view.home;

import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import com.google.firebase.auth.FirebaseAuth;
import com.sdp.movemeet.R;
import com.sdp.movemeet.backend.providers.AuthenticationInstanceProvider;
import com.sdp.movemeet.view.main.MainActivity;

public class LoginActivity extends AppCompatActivity {

    private EditText emailEditText, passwordEditText;
    private Button loginBtn;
    private TextView createBtn;
    private ProgressBar progressBar;
    private FirebaseAuth fAuth;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        emailEditText = findViewById(R.id.edit_text_email);
        passwordEditText = findViewById(R.id.edit_text_password);
        progressBar = findViewById(R.id.activity_login_progress_bar);
        fAuth = AuthenticationInstanceProvider.getAuthenticationInstance();
        loginBtn = findViewById(R.id.button_login);
        createBtn = findViewById(R.id.text_view_create_account);

        loginBtn.setOnClickListener(v -> {

            // When the user clicks on the "LOGIN" button, we first validate his data
            String email = emailEditText.getText().toString().trim();
            String password = passwordEditText.getText().toString().trim();

            if (TextUtils.isEmpty(email)) { // checking that the email address is not empty
                emailEditText.setError("Email is required.");
                return;
            }

            if (TextUtils.isEmpty(password)) { // checking that the password is not empty
                passwordEditText.setError("Password is required.");
                return;
            }

            if (password.length() < 6) { // checking that the password is at least 6 characters long
                passwordEditText.setError("Password must be >= 6 characters.");
                return;
            }

            progressBar.setVisibility(View.VISIBLE);

            // Then we authenticate the user using his email and password
            fAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(task -> {
                if (task.isSuccessful()) {
                    Toast.makeText(LoginActivity.this, "Logged in successfully.", Toast.LENGTH_SHORT).show();
                    Intent intent = new Intent(getApplicationContext(), MainActivity.class);// we redirect the user to the "MainActivity"
                    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
                    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
                    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                    intent.addCategory(Intent.CATEGORY_HOME);
                    startActivity(intent);
                    finish();

                } else {
                    Toast.makeText(LoginActivity.this, "Error! " + task.getException().getMessage(), Toast.LENGTH_SHORT).show();
                    progressBar.setVisibility(View.GONE);
                }
            });

        });

    }

    public void openRegisterActivity(View view) {
        startActivity(new Intent(getApplicationContext(), RegisterActivity.class)); // redirecting the user to the "Register" activity
    }
}