<?php
namespace app\core\auth;

use app\core\contract\Authentication;
use app\core\auth\Session;
use app\core\traits\Rememberme;
use app\core\utils\Request;
use app\core\utils\Response;
use app\core\utils\Cookie;

class User implements Authentication {

    use Rememberme;
    
    public static function login(array $userData): bool {
        // Get CodeIgniter instance
        $CI =& get_instance();

        $CI->load->model('user_login_history_model');

        $sessID = session_id();

        $loginH = [
            'session_id' => $sessID,
            'role_id' => $userData['role_id'],
            'user_id' => $userData['user_id']
        ];

        /**
         *  This is when BO User login as Subscriber
         * Add access token to history log
         * */
        if (isset($userData['token_id']) && !empty($userData['token_id'])) {
            $loginH['access_token_id'] = $userData['token_id'];
        }

        // Add signin history
        $login_id = $CI->user_login_history_model->client_checkdb(
            array_merge(Request::metaData($CI), $loginH),
            "LOGIN"
        );

        if (!$login_id) return false;

        // Lets create session!
        $sessionData = new Session(array_merge(
                [
                "session_id" => $sessID,
                "login_id" => $login_id
                ], $userData
            )
        );

        // Invalidate previous Remember Me
        Rememberme::forget();
        
        // Then create new one on-demand
        if ($userData['remember_me']) {
            Rememberme::create(
                $userData['user_id'],
                $userData['role_id'],
                $userData['isBOUser']
            );
        }

        // Register session data
        $CI->session->set_userdata([ self::KEY => $sessionData->toArray() ]);

        return !!$CI->session->userdata(self::KEY);
    }

    public static function logout() {
        // Get CodeIgniter instance
        $CI =& get_instance();

        // Immediate redirection
        if (!self::isAuth()) return Response::backToReferrerDefaultPage();

        $userSession = self::auth();

        // Invalidate access token
        if (self::isLoggedInAsSubscriber()) {
            $CI->user_model->update_access_token($userSession['token_id']);
        }

        // Add signout history
        $CI->user_login_history_model->client_checkdb(array_merge(
            Request::metaData($CI), 
            [
                'session_id' => $userSession['session_id'],
                'login_id' => $userSession['login_id'],
                'user_id' => $userSession['user_id'],
                'role_id' => $userSession['role_id']
            ]
        ), "LOGOUT");

        // Finally reset login session
        $CI->session->unset_userdata(self::KEY);

        // Invalidate Remember Me
        if (!$userSession['remember_me'])
            Rememberme::forget();

        // Redirect to respective page
        if ($userSession["isBOUser"])
            redirect(base_url('auth'));
        else
            redirect(base_url('home'));
    }

    /**
	 * Get session data
	 * @return void
	 */
	public static function auth(): array {
        // Get CodeIgniter instance
        $CI =& get_instance();

        if (!self::isAuth()) return [];
        
        return $CI->session->userdata(self::KEY);
	}

    public static function isAuth(): bool {
        // Get CodeIgniter instance
        $CI =& get_instance();

        $loggedIn = $CI->session->userdata(self::KEY);

        if (!$loggedIn) return false;

        $CI->load->model('user_model');

        return !!$CI->user_model->check_if_session_is_active($loggedIn);
    }

    public static function isBOUser(): bool {
        // Get CodeIgniter instance
        $CI =& get_instance();

        return !!@$CI->session->userdata(self::KEY)['isBOUser'];
    }

    public static function isFOUser(): bool {
        // Get CodeIgniter instance
        $CI =& get_instance();

        return !!!$CI->session->userdata(self::KEY)['isBOUser'];
    }

    public static function isFirstLogin(): bool {
        // Get CodeIgniter instance
        $CI =& get_instance();

        return !!@$CI->session->userdata(self::KEY)['isFirstLogin'];
    }
    
    public static function isLoggedInAsSubscriber(): bool {
        // Get CodeIgniter instance
        $CI =& get_instance();

        return !!$CI->session->userdata(self::KEY)['token_id'];
    }
    
    public static function isLoggedBySSO(): bool {
        // Get CodeIgniter instance
        $CI =& get_instance();

        return !!$CI->session->userdata(self::KEY)['sso'] && count($CI->session->userdata(self::KEY)['sso']);
    }

    public static function isPremium(): bool {
        // Get CodeIgniter instance
        $CI =& get_instance();

        return !!$CI->session->userdata(self::KEY)['premium'];
    }

    public static function updateSession($key, $value) {
        $editableFields = ['first_name', 'last_name'];
        if (in_array($key, $editableFields)) {
            // Get CodeIgniter instance
            $CI =& get_instance();

            $loggedIn = $CI->session->userdata(self::KEY);

            $loggedIn[$key] = $value;

            $loggedIn['fullname'] = $loggedIn['first_name']." ".$loggedIn['last_name'];

            // Register session data
            $CI->session->set_userdata([ self::KEY => $loggedIn ]);
        }
    }
}