<?php

declare(strict_types=1);

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

namespace KTXF\Resource\Selector;

/**
 * Entity-level selector (leaf node)
 */
class EntitySelector extends SelectorAbstract {

	protected array $keyTypes = ['string', 'integer'];
	protected array $valueTypes = ['boolean', 'array', 'string', 'integer'];
	protected string $selectorName = 'EntitySelector';

	public function append($value): void {
		if (!is_string($value) && !is_int($value)) {
			throw new \InvalidArgumentException('EntitySelector values must be string or int');
		}
		parent::append($value);
	}

	public function offsetSet($key, $value): void {
		if ($key !== null && !is_int($key)) {
			throw new \InvalidArgumentException('EntitySelector does not support associative keys');
		}
		if (!is_string($value) && !is_int($value)) {
			throw new \InvalidArgumentException('EntitySelector values must be string or int');
		}
		parent::offsetSet($key, $value);
	}

	/**
	 * Get all entity identifiers
	 * @return array<string|int>
	 */
	public function identifiers(): array {
		return $this->getArrayCopy();
	}

}