<?php

namespace Timber;

use ArrayAccess;
use Countable;
use Traversable;

/**
 * Interface for dealing with collections of Posts, whether directly wrapping a WP_Query instance,
 * a simple (flat/numeric) array of Posts, or some other kind of custom collection.
 *
 * @api
 */
interface PostCollectionInterface extends Traversable, Countable, ArrayAccess
{
    /**
     * Get the Pagination for this collection, if available.
     *
     * @api
     * @param array $options optional config options to pass to the \Timber\Pagination constructor.
     * @return null|Pagination a Pagination object if pagination is available for this collection;
     * null otherwise.
     */
    public function pagination(array $options = []);

    /**
     * Get this collection as a numeric array of \Timber\Post objects.
     *
     * @api
     * @return Post[]
     */
    public function to_array(): array;
}
