/**
 * @param $iUserId user id of selected user
 * @return array|bool
 */
public function getUserStatsForAdmin($iUserId)
{
    if (!$iUserId) {
        return false;
    }

    $iIncomplete = db()->select('COUNT(*)')
        ->from(':todolist_task')
        ->where([
            'user_id' => (int)$iUserId,
            'task_status' => 0
        ])
        ->execute('getField');
    $iComplete = db()->select('COUNT(*)')
        ->from(':todolist_task')
        ->where([
            'user_id' => (int)$iUserId,
            'task_status' => 1
        ])
        ->execute('getField');
    return [
        'merge_result' => true,
        'result' => [
            [
                //Name of the item
                'total_name' => _p('incomplete_tasks'),
                //Total count
                'total_value' => $iIncomplete,
                'type' => 'item'
            ],
            [
                'total_name' => _p('complete_tasks'),
                'total_value' => $iComplete,
                'type' => 'item'
            ]
        ]
    ];
}