<?php
/************************************************************************
 * This file is part of EspoCRM.
 *
 * EspoCRM - Open Source CRM application.
 * Copyright (C) 2014-2015 Yuri Kuznetsov, Taras Machyshyn, Oleksiy Avramenko
 * Website: http://www.espocrm.com
 *
 * EspoCRM is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * EspoCRM is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with EspoCRM. If not, see http://www.gnu.org/licenses/.
 ************************************************************************/

namespace Espo\Modules\Crm\Business\CaseDistribution;

class RoundRobin
{
    protected $entityManager;

    public function __construct($entityManager)
    {
        $this->entityManager = $entityManager;
    }

    protected function getEntityManager()
    {
        return $this->entityManager;
    }

    public function getUser($team, $targetUserPosition = null)
    {
        $params = array();
        if (!empty($targetUserPosition)) {
            $params['additionalColumnsConditions'] = array(
                'role' => $targetUserPosition
            );
        }

        $userList = $team->get('users', $params);

        if (count($userList) == 0) {
            return false;
        }

        $userIdList = array();

        foreach ($userList as $user) {
            $userIdList[] = $user->id;
        }


        $case = $this->getEntityManager()->getRepository('Case')->where(array(
            'assignedUserId' => $userIdList,
        ))->order('createdAt', 'DESC')->findOne();

        if (empty($case)) {
            $num = 0;
        } else {
            $num = array_search($case->get('assignedUserId'), $userIdList);
            if ($num === false || $num == count($userIdList) - 1) {
                $num = 0;
            } else {
                $num++;
            }
        }

        return $this->getEntityManager()->getEntity('User', $userIdList[$num]);
    }
}