<?php
/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 */

namespace Zend\Paginator\Adapter;

class NullFill implements AdapterInterface
{
    /**
     * Item count
     *
     * @var int
     */
    protected $count = null;

    /**
     * Constructor.
     *
     * @param int $count Total item count (Optional)
     */
    public function __construct($count = 0)
    {
        $this->count = $count;
    }

    /**
     * Returns an array of items for a page.
     *
     * @param  int $offset Page offset
     * @param  int $itemCountPerPage Number of items per page
     * @return array
     */
    public function getItems($offset, $itemCountPerPage)
    {
        if ($offset >= $this->count()) {
            return [];
        }

        $remainItemCount  = $this->count() - $offset;
        $currentItemCount = $remainItemCount > $itemCountPerPage ? $itemCountPerPage : $remainItemCount;

        return array_fill(0, $currentItemCount, null);
    }

    /**
     * Returns the total number of rows in the array.
     *
     * @return int
     */
    public function count()
    {
        return $this->count;
    }
}
