<?php

declare(strict_types=1);
/**
 * SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace OCA\Photos\Album;

class AlbumWithFiles {
	public function __construct(
		private readonly AlbumInfo $info,
		private readonly AlbumMapper $albumMapper,
		/** @var AlbumFile[] */
		private array $files = [],
	) {
	}

	public function getAlbum(): AlbumInfo {
		return $this->info;
	}

	/**
	 * @return AlbumFile[]
	 */
	public function getFiles(): array {
		if (empty($this->files)) {
			$this->files = $this->fetchFiles();
		}
		return $this->files;
	}

	/**
	 * @return AlbumFile[]
	 */
	public function addFile(AlbumFile $file): array {
		if (empty($this->files)) {
			$this->files = $this->fetchFiles();
		}

		array_push($this->files, $file);
		return $this->files;
	}

	/**
	 * @return int[]
	 */
	public function getFileIds(): array {
		return array_map(fn (AlbumFile $file): int => $file->getFileId(), $this->getFiles());
	}

	/**
	 * @return AlbumFile[]
	 */
	private function fetchFiles(): array {
		return $this->albumMapper->getForAlbumIdAndUserWithFiles(
			$this->info->getId(),
			$this->info->getUserId(),
			$this->info->getDecodedFilters(),
		);
	}
}