Gonitzoggo Login

<?php
/**
 * GonitZoggo
 * @file Login.php
 * @author Atiab Jobayer <atiab@coderzwar.com>
 */
defined('BASEPATH') OR exit('Access Denied');

class Login extends CI_Controller
{

    public function __construct()
    {
        parent::__construct();

        //show_error("Site is down due to some issues. Check back later.");
    }

    public function index()
    {
        if(! $this->session->userdata('referrer_url'))
            $this->session->set_userdata('referrer_url', $this->agent->referrer());

        if ($this->user->logged_in)
            redirect('/');

        $this->form_validation->set_rules('username', 'Username', 'required|min_length[5]|max_length[30]|alpha_dash');
        $this->form_validation->set_rules('password', 'Password', 'required|min_length[6]|max_length[30]');

        $data = array(
            'notifications' => $this->session->flashdata(),
            'error' => FALSE,
        );

        $this->load->library('facebook');

        $data['fb_login_url'] =  $this->facebook->login_url();

        //echo $data['fb_login_url'];

        if($this->facebook->is_authenticated()){
            $fbUserProfile = $this->facebook->request('get', '/me?fields=id,first_name,last_name,email,link,gender,locale,cover,picture');

            print_r($fbUserProfile);

            $user = array(
                'facebook_oauth' => $fbUserProfile['id'],
                'first_name' => $fbUserProfile['first_name'],
                'last_name' => $fbUserProfile['last_name'],
                'email' => $fbUserProfile['email'],
            );
            // $userData['locale'] = $fbUserProfile['locale'];
            // $userData['cover'] = $fbUserProfile['cover']['source'];
            // $userData['picture'] = $fbUserProfile['picture']['data']['url'];

            if($this->user_model->fb_data_process($user)){
                $login_data = array(
                    'username'  => $this->user_model->fb_to_username($user['facebook_oauth']),
                    'logged_in' => TRUE
                );

                $this->session->set_userdata($login_data);

                if( $this->session->userdata('referrer_url') ) {
                    $redirect_back = $this->session->userdata('referrer_url');
                    $this->session->unset_userdata('referrer_url');

                    redirect( $redirect_back );
                }
                else
                    redirect('/');
            }


            $data['fb_logout_url'] = $this->facebook->logout_url();
        }

        if($this->form_validation->run()){
            $username = $this->input->post('username');
            $password = $this->input->post('password');

            if($this->user_model->validate_user($username, $password)){
                $login_data = array(
                    'username'  => $username,
                    'logged_in' => TRUE
                );

                $user = $this->user_model->user_info($username);

                if($user['verify_key'] !== NULL){
                    $notif = array(
                        'text' => 'Please Verify Your Email',
                        'type' => 'warning',
                    );

                    $this->session->set_flashdata('message', $notif);

                    redirect('login');
                }

                $this->session->set_userdata($login_data);

                if( $this->session->userdata('referrer_url') ) {
                    $redirect_back = $this->session->userdata('referrer_url');
                    $this->session->unset_userdata('referrer_url');

                    redirect( $redirect_back );
                }
                else
                    redirect('/');
            }
            else
                $data['error'] = TRUE;
        }

        $this->twig->display('pages/authentication/login.twig', $data);
    }

    public function register()
    {
        if ($this->user->logged_in)
            redirect('/');

        $this->form_validation->set_rules('username', 'Username', 'required|min_length[5]|max_length[30]|alpha_dash|is_unique[users.username]', array('is_unique' => 'This %s Already Exists.'));

        $this->form_validation->set_rules('email', 'Email', 'required|max_length[40]|valid_email|is_unique[users.email]', array('is_unique' => 'This %s Has Already Been Used'));

        $this->form_validation->set_rules('password', 'password', 'required|min_length[6]|max_length[30]');
        $this->form_validation->set_rules('password_again', 'password confirmation', 'required|matches[password]');

        if ($this->form_validation->run()){
            $user_info = array(
                'username' => $this->input->post('username'),
                'display_name' => $this->input->post('display_name'),
                'email' => $this->input->post('email'),
                'institution' => $this->input->post('institution'),
                'password' => $this->input->post('password'),
                'role' => 'User'
            );

            $this->user_model->add_user($user_info);

            $notif = array(
                'text' => 'Registration Successful',
                'type' => 'success',
            );

            $this->session->set_flashdata('message', $notif);

            redirect('login');
        }
        else
            $this->twig->display('pages/authentication/register.twig');
    }

    public function logout()
    {
        $this->load->library('facebook');

        $this->facebook->destroy_session();
        $this->session->sess_destroy();

        redirect('/');
    }


    // ------------------------------------------------------------------------


    public function lost()
    {
        if($this->user->logged_in)
            redirect('/');

        $this->form_validation->set_rules('email', 'email', 'required|max_length[254]|valid_email');

        if ($this->form_validation->run())
        {
            $email = $this->input->post('email');

            if(! $this->user_model->have_email($email)){
                $notif = array(
                    'text' => 'Account Not Found',
                    'type' => 'error',
                );

                $this->session->set_flashdata('message', $notif);

                redirect('login/lost');
            }

            $this->user_model->send_password_reset_mail($email);

            $notif = array(
                'text' => 'Password Reset Email Sent',
                'type' => 'success',
            );

            $this->session->set_flashdata('message', $notif);

            redirect('login');
        }

        $data = array(
            'notifications' => $this->session->flashdata(),
        );

        $this->twig->display('pages/authentication/lost.twig', $data);
    }


    // ------------------------------------------------------------------------


    public function reset($passchange_key = FALSE)
    {
        if ($passchange_key === FALSE)
            show_404();

        $result = $this->user_model->passchange_is_valid($passchange_key);

        if ($result !== TRUE)
            show_error($result);

        $this->form_validation->set_rules('password', 'password', 'required|min_length[6]|max_length[30]');
        $this->form_validation->set_rules('password_again', 'password confirmation', 'required|matches[password]');

        $data = array(
            'key' => $passchange_key,
            'result' => $result,
            'reset' => FALSE
        );
        if ($this->form_validation->run()){
            $this->user_model->reset_password($passchange_key, $this->input->post('password'));

            $notif = array(
                'text' => 'Password Reset Successful',
                'type' => 'success',
            );

            $this->session->set_flashdata('message', $notif);

            redirect('login');
        }

        $this->twig->display('pages/authentication/reset_password.twig', $data);
    }

    public function unsubscribe($key = false)
    {
        if(! $key)
            show_404();

        $query = $this->db->where('unsubscribe_key', $key)->get('users');

        if($query->num_rows() != 1)
            show_error("Invalid Key");

        $user = $query->row_array();
        $user['subscribed'] = 0;

        $this->db->where('id', $user['id'])->update('users', $user);

        echo "Unsubscribed Successfully";
    }

    public function verify($key = false)
    {
        if(!$key)
            show_404();

        $query = $this->db->where('verify_key', $key)->get('users');

        if($query->num_rows() != 1)
            show_error("Inavlid Key");

        $user = $query->row_array();
        $user['verify_key'] = NULL;

        $this->db->where('id', $user['id'])->update('users', $user);

        $notif = array(
            'text' => 'Verification Successful',
            'type' => 'success',
        );

        $this->session->set_flashdata('message', $notif);

        redirect('login');
    }

    public function facebook_login()
    {


        // Load login & profile view
        $this->twig->display('pages/authentication/lost.twig', $data);
    }
}