public function facebook_login()
{
$fbAppID = Configure::read('System.Facebook.AppID');
$fbSecret = Configure::read('System.Facebook.AppSecret');
FacebookSession::setDefaultApplication($fbAppID, $fbSecret);
$helper = new FacebookJavaScriptLoginHelper();
try {
$session = $helper->getSession();
} catch (FacebookRequestException $ex) {
die('Error get FB session');
} catch (\Exception $ex) {
die('Error get FB session');
}
if ($session) {
try {
$user = new FacebookRequest($session, 'GET', '/me');
$user = $user->execute();
$user = $user->getGraphObject(GraphUser::className());
} catch (FacebookRequestException $e) {
echo "Exception occured, code: " . $e->getCode();
echo " with message: " . $e->getMessage();
}
}
if (isset($user) && $user) {
$fbid = $user->getProperty("id");
$email = $user->getProperty("email");
$firstName = $user->getProperty("first_name");
$lastName = $user->getProperty("last_name");
$user = $this->Users->find()->where(['facebook_id' => $fbid, 'status <>' => USER_STATUS_DELETED])->first();
if ($user) {
// Has already login fb before => Allow to login
$this->request->session()->write('Core.Users', $user);
$this->redirect(['plugin' => 'admin', 'controller' => 'pages', 'action' => 'index']);
} else {
// Check email exist or not
$user = $this->Users->find()->where(['email' => $email, 'status <>' => USER_STATUS_DELETED])->first();
if ($user) {
//Exist Real account => not allow to login using facebook
$this->Flash->success(__('This email exist in the system and cannot be using Facebook'));
$this->redirect($this->referer());
} else {
$userEntity = $this->Users->newEntity();
$userEntity->email = $email;
$userEntity->facebook_id = $fbid;
$userEntity->first_name = $firstName;
$userEntity->last_name = $lastName;
$userEntity->auth_token = \Core::randomCode();
$userEntity->status = USER_STATUS_ACTIVE;
if ($this->Users->save($userEntity)) {
$this->request->session()->write('Core.Users', $userEntity);
$this->redirect($this->referer());
} else {
$this->Flash->warning(__('Cannot create member account'));
$this->redirect($this->referer());
}
}
}
} else {
$scope = ['email', 'public_profile'];
$loginUrl = $helper->getLoginUrl($scope);
$this->redirect($loginUrl);
}
}
