<?php
require 'database-config.php';

$username = "";
$password = "";

if(isset($_POST['username'])){
$username = $_POST['username'];
}
if (isset($_POST['password'])) {
$password = $_POST['password'];
}

$q = 'SELECT * FROM tbl_user WHERE username=:username AND password=:password';

$query = $dbh->prepare($q);

$query->execute(array(':username' => $username, ':password' => $password));

if($query->rowCount() == 0){
header('Location: Login.php?err=1');
}else{
$row = $query->fetch(PDO::FETCH_ASSOC);
$_POST['sess_userrole'] = $row['roles'];

if($_POST['sess_userrole'] == "renter"){
echo "renter";

}else if ($_POST['sess_userrole'] == "owner"){
echo "owner";

}
}
?>

public class MainActivity extends AppCompatActivity implements CompoundButton.OnCheckedChangeListener {

final String TAG = this.getClass().getName();
Button btnLogin;
EditText etUsername, etPassword;
TextView tvRegister;
CheckBox cbRemember;
SharedPreferences pref;
SharedPreferences.Editor editor;
boolean checkFlag;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    etUsername = (EditText) findViewById(R.id.etFirstname);
    etPassword = (EditText) findViewById(R.id.etPassword);
    btnLogin = (Button) findViewById(R.id.btnLogin);
    tvRegister = (TextView) findViewById(R.id.tvRegister);
    cbRemember = (CheckBox) findViewById(R.id.cbRemember);
    cbRemember.setOnCheckedChangeListener(this);
    checkFlag = cbRemember.isChecked();
    etUsername.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Log.d(TAG, etUsername.getText().toString());
        }
    });

    pref = MainActivity.this.getSharedPreferences("Login.conf", Context.MODE_PRIVATE);
    editor = pref.edit();


    String username = pref.getString("username", "");
    String password = pref.getString("password", "");

    HashMap postData = new HashMap();
    postData.put("username", username);
    postData.put("password", password);

    if (!username.equals("") && (!password.equals(""))) {
        PostResponseAsyncTask task1 = new PostResponseAsyncTask(MainActivity.this, postData,
                new AsyncResponse() {
                    @Override
                    public void processFinish(String s) {

                        if (s.contains("renter")) {
                            Log.d(TAG, s);
                            Log.d(TAG,pref.getString("username", ""));
                            Toast.makeText(MainActivity.this, "Renter Login Successful!", Toast.LENGTH_SHORT).show();
                            Intent in = new Intent(MainActivity.this, RenterTabs.class);
                            startActivity(in);
                            MainActivity.this.finish();

                        } else if (s.contains("owner")) {
                            Log.d(TAG, s);
                            Log.d(TAG,pref.getString("username", ""));
                            Toast.makeText(MainActivity.this, "Owner Login Successful!", Toast.LENGTH_SHORT).show();
                            Intent in = new Intent(MainActivity.this, OwnerTabs.class);
                            startActivity(in);
                            MainActivity.this.finish();
                        } else {
                            Toast.makeText(MainActivity.this, "Wrong username or password...", Toast.LENGTH_SHORT).show();
                        }
                    }
                });
        task1.execute("http://carkila.esy.es/carkila/authenticate.php");
    }

    btnLogin.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            HashMap postData = new HashMap();
            postData.put("username", etUsername.getText().toString());
            postData.put("password", MD5.encrypt(etPassword.getText().toString()));

            PostResponseAsyncTask task1 = new PostResponseAsyncTask(MainActivity.this, postData,
                    new AsyncResponse() {
                        @Override
                        public void processFinish(String s) {
                            Log.d(TAG,s);
                            if (s.contains("renter")) {
                                if (checkFlag) {
                                    editor.putString("username", etUsername.getText().toString());
                                    editor.putString("password", MD5.encrypt(etPassword.getText().toString()));
                                    editor.apply();
                                }
                                Intent in = new Intent(MainActivity.this, RenterTabs.class);
                                startActivity(in);
                                finish();

                            } else if (s.contains("owner")) {

                                if (checkFlag) {
                                    editor.putString("username", etUsername.getText().toString());
                                    editor.putString("password", MD5.encrypt(etPassword.getText().toString()));
                                    editor.apply();
                                }
                                editor.putString("username", etUsername.getText().toString());
                                editor.putString("password", MD5.encrypt(etPassword.getText().toString()));
                                editor.apply();

                                Intent in = new Intent(MainActivity.this, OwnerTabs.class);
                                startActivity(in);
                                finish();
                            } else {
                                Toast.makeText(MainActivity.this, "Wrong username or password...", Toast.LENGTH_SHORT).show();
                            }
                        }
                    });
            task1.execute("http://carkila.esy.es/carkila/authenticate.php");
        }
    });

    tvRegister.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            Intent in = new Intent(MainActivity.this, RegisterActivity.class);
            startActivity(in);
        }
    });

}

@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
    checkFlag = b;
    Log.d(TAG, "checkflag: " + checkFlag);
}
}