How to Create "Google Login" in Codeigniter?

Google Login Integration in Codeigniter

Paste in Controller

$uuser_id = '';

include_once(FCPATH.'googlelogin-library/vendor/autoload.php');

$google_client = new Google_Client();

$google_client->setClientId('975330128814-il47gqr1l99uleblged7altinhpm99g3.apps.googleusercontent.com'); //Define your ClientID

$google_client->setClientSecret('c-6xwtqoC4DRXV_blQ9QB6Lu'); //Define your Client Secret Key

$google_client->setRedirectUri(base_url().'login'); //Define your Redirect Uri

$google_client->addScope('email');

$google_client->addScope('profile');

 

//echo '<pre>'; 

// print_r($google_client);

//echo $_GET["code"];

  if(isset($_GET["code"]))

  {

   $token = $google_client->fetchAccessTokenWithAuthCode($_GET["code"]);

   if(!isset($token["error"]))

   {

$google_client->setAccessToken($token['access_token']);

$this->session->set_userdata('access_token', $token['access_token']);

$google_service = new Google_Service_Oauth2($google_client);

$data = $google_service->userinfo->get();

$current_datetime = date('Y-m-d H:i:s');

if(count($this->User_Model->check_google_account_exists($data['id']))>0)

{

//update data 

$user_data = array(

  'name' => $data['given_name'],

  'lastname'  => $data['family_name'],

  'email' => $data['email'],

);

// $this->User_Model->update_google($user_data, $data['id']);

$googleresult = $this->User_Model-> google_login($data['email'], $data['id']);

$uuser_id = $googleresult[0]->id;

}

else

{

if(count($this->User_Model->get_email_data($data['email']))>0){

$this->session->set_flashdata('login_failed', 'This email is already registered.');

redirect('login');

}

else{

$user_data = array(

  'google_id' => $data['id'],

  'name'  => $data['given_name'],

  'lastname'   => $data['family_name'],

  'email'  => $data['email'],

  'role'  => 'employee'

);

$uuser_id = $this->User_Model->googleregistation($user_data);

}

} 

$user_detail = $this->User_Model->get_single_user($uuser_id);

//echo count($user_detail);

//print_r($user_detail);

if (count($user_detail) > 0) {

//Create Session

$user_data = array(

'full_user_detail' => $user_detail,

'user_id' => $user_detail[0]->id,

'email' => $user_detail[0]->email,

'role' => $user_detail[0]->role,

'username' => $user_detail[0]->name.' '.$user_detail[0]->lastname,

'is_user_login' => true

);

 

$set_session = $this->session->set_userdata($user_data);

$this->session->set_flashdata('user_loggedin', 'You are now logged in.');

redirect('users/dashboard'); 

}

else{

$this->session->set_flashdata('login_failed', 'Login is invalid.');

redirect('login');

}

   }

  } 

  

  $login_button = '';

  if(!$this->session->userdata('is_user_login'))

  {

   $login_button = $google_client->createAuthUrl();

//echo $login_button;

//   die();

   $data['login_button'] = $login_button;

  }

$this->load->view('users/login', $data);

Model  in Controller

public function get_single_user($id){

$this->db->select("*"); 

$this->db->from('users');

$this->db->where('id', $id);

$query = $this->db->get();

return $query->result();

}

/*========================================Google Account=========================================*/

public function update_google($data,$user_id){

$this->db->where('google_id', $user_id);

return $this->db->update('users', $data);

}

// Check email exists

public function check_google_account_exists($google_id){

$this->db->select("*"); 

$this->db->from('users');

$this->db->where('google_id', $google_id);

$query = $this->db->get();

return $query->result();

}

public function googleregistation($userdata){

$this->db->insert('users', $userdata);

return $insertId = $this->db->insert_id();

}

public function google_login($email, $google_id){

//Validate

$this->db->select("*"); 

$this->db->from('users');

$this->db->where('email', $email);

$this->db->where('google_id', $google_id);

//$this->db->where("(role='employee' OR role='employer')", NULL, FALSE);

$query = $this->db->get();

return $query->result();

}

View in Controller

<a href="<?php if(!empty($login_button)){ echo $login_button; } ?>" >Login with Google</a>