<?php

declare(strict_types=1);

/**
 * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace KTXF\Resource\Identifier;

/**
 * Collection-level resource identifier (depth 3)
 * 
 * Format: {provider}:{service}:{collection}
 */
class CollectionIdentifier extends ServiceIdentifier implements CollectionIdentifierInterface {

	public function __construct(
		string $provider,
		string $service,
		private readonly string $_collection,
	) {
		parent::__construct($provider, $service);
	}

	public function collection(): string {
		return $this->_collection;
	}

	public function depth(): int {
		return 3;
	}

	public function __toString(): string {
		return parent::__toString() . self::SEPARATOR . $this->_collection;
	}

}