<?php
/**
 * Authserver, an OAuth2-based single-signon authentication provider written in PHP.
 *
 * Copyright (C) $today.date  Lars Vierbergen
 *
 * his program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

namespace vierbergenlars\AuthserverOAuthAccountBundle\ResourceOwner;

class ResourceOwnerMapIterator implements \Iterator
{
    /**
     * @var ResourceOwnerMap
     */
    private $resourceOwnerMap;

    /**
     * @var string[]
     */
    private $keySet;

    /**
     * @var int
     */
    private $index = 0;

    /**
     * ResourceOwnerMapIterator constructor.
     *
     * @param ResourceOwnerMap $resourceOwnerMap
     * @param \string[] $keySet
     */
    public function __construct(ResourceOwnerMap $resourceOwnerMap, array $keySet)
    {
        $this->resourceOwnerMap = $resourceOwnerMap;
        $this->keySet = $keySet;
    }

    public function current()
    {
        return $this->resourceOwnerMap->offsetGet($this->keySet[$this->index]);
    }

    public function next()
    {
        $this->index++;
    }

    public function key()
    {
        return $this->keySet[$this->index];
    }

    public function valid()
    {
        return isset($this->keySet[$this->index]);
    }

    public function rewind()
    {
        $this->index = 0;
    }

}