<?php

namespace CleantalkSP\Monitoring;

use CleantalkSP\Variables\Server;
use CleantalkSP\SpbctWP\Helpers\IP;

/**
 * Class User
 * @package CleantalkSP\Monitoring\
 */
class User
{
    public static function record()
    {
        global $wpdb;

        $current_user = wp_get_current_user();
        if ( $current_user && $current_user->ID ) {
            $user_id       = $current_user->ID;
            $user_login    = $current_user->user_login;
            $last_activity = time();
            $page          = substr(Server::getString('REQUEST_URI'), 0, 500);
            $ip            = IP::get();
            $role          = isset($current_user->roles[0])
                ? $current_user->roles[0]
                : null;
            $user_agent    = substr(strip_tags(Server::getString('HTTP_USER_AGENT')), 0, 1000);

            // Inserting / updating user
            $wpdb->replace(
                SPBC_TBL_MONITORING_USERS,
                compact('user_id', 'user_login', 'last_activity', 'page', 'ip', 'role', 'user_agent')
            );

            // Cleaning form offline users
            $wpdb->query(
                $wpdb->prepare(
                    'DELETE FROM ' . SPBC_TBL_MONITORING_USERS . ' WHERE last_activity < %s',
                    time() - 60 * 8
                )
            );
        }
    }

    /**
     * Get data of all users online.
     * @psalm-suppress PossiblyUnusedMethod
     * @return array
     */
    public static function getUsersOnline()
    {
        global $wpdb;

        return $wpdb->get_col('SELECT user_login FROM ' . SPBC_TBL_MONITORING_USERS);
    }

    /**
     * Get data of admins (only) online.
     * @return array
     */
    public static function getAdminsOnline()
    {
        global $wpdb;

        return $wpdb->get_col('SELECT user_login FROM ' . SPBC_TBL_MONITORING_USERS . ' WHERE role = "administrator"');
    }

    /**
     * @return int|void
     * @psalm-suppress PossiblyUnusedMethod
     */
    public static function countUsersOnline()
    {
        return count(self::getUsersOnline());
    }
}