YassinAJDI/MaterialJournal

package com.ajdi.yassin.materialjournal.ui.login;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;

import com.ajdi.yassin.materialjournal.ui.notes.NotesActivity;
import com.firebase.ui.auth.AuthUI;
import com.firebase.ui.auth.ErrorCodes;
import com.firebase.ui.auth.IdpResponse;
import com.google.firebase.auth.FirebaseAuth;

import java.util.Arrays;
import java.util.List;

import androidx.annotation.MainThread;
import androidx.appcompat.app.AppCompatActivity;

public class AuthUiActivity extends AppCompatActivity {

    private static final int RC_SIGN_IN = 123;

    private static final String TAG = "AuthUiActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    protected void onResume() {
        super.onResume();
        FirebaseAuth auth = FirebaseAuth.getInstance();
        if (auth.getCurrentUser() != null) {
            startSignedInActivity(null);
            finish();
        }else {
            showSignInScreen();
        }
    }

    private void showSignInScreen() {
        // Choose authentication providers
        List<AuthUI.IdpConfig> providers = Arrays.asList(
                new AuthUI.IdpConfig.EmailBuilder().build(),
                new AuthUI.IdpConfig.GoogleBuilder().build());

        // Create and launch sign-in intent
        startActivityForResult(
                AuthUI.getInstance()
                        .createSignInIntentBuilder()
                        .setAvailableProviders(providers)
                        .build(),
                RC_SIGN_IN);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == RC_SIGN_IN) {
            handleSignInResponse(resultCode, data);
            return;
        }

        //showSnackbar(R.string.unknown_response);
    }

    @MainThread
    private void handleSignInResponse(int resultCode, Intent data) {
        final IdpResponse response = IdpResponse.fromResultIntent(data);

        // Successfully signed in
        if (resultCode == RESULT_OK) {
            startSignedInActivity(response);
            finish();
        } else {
            // Sign in failed
            if (response == null) {
                // User pressed back button
                Toast.makeText(this, "User pressed back button!", Toast.LENGTH_SHORT).show();
                return;
            }

            if (response.getError().getErrorCode() == ErrorCodes.NO_NETWORK) {
                Toast.makeText(this, "Error!", Toast.LENGTH_SHORT).show();
                return;
            }

            Toast.makeText(this, "User pressed back button!", Toast.LENGTH_SHORT).show();
            Log.e(TAG, "Sign-in error: ", response.getError());
        }
    }

    private void startSignedInActivity(IdpResponse response) {
        startActivity(NotesActivity.createIntent(this, response));
    }

    public static Intent createIntent(Context context) {
        return new Intent(context, AuthUiActivity.class);
    }
}