<?php

namespace Automad\System;

use Automad\Core\FileSystem;
use Automad\Core\Image;
use Automad\Core\RemoteFile;
use Automad\Core\Str;

/**
 * The Package class contains a collection of helper methods for handling package data.
 *
 * @author Marc Anton Dahmen
 * @copyright Copyright (c) 2023 by Marc Anton Dahmen - https://marcdahmen.de
 * @license MIT license - https://automad.org/license
 */
class Package
{
	/**
	 * Try to fetch and cache a package thumbnail based on the repository readme file.
	 *
	 * @param string $repository
	 * @return string
	 */
	public static function getThumbnail(string $repository): string
	{
		$repositorySlug = Str::stripStart($repository, 'https://github.com/');

		if (!preg_match('#\w+/\w+#', $repositorySlug)) {
			return '';
		}

		$lifetime = 604800;
		$cachePath = AM_BASE_DIR . AM_DIR_CACHE . "/packages/$repositorySlug/thumbnail";

		if (is_readable($cachePath) && filemtime($cachePath) > time() - $lifetime) {
			$cachedImageUrl = file_get_contents($cachePath);

			if (!$cachedImageUrl) {
				return '';
			}

			return $cachedImageUrl;
		}

		$readme = self::getReadme($repository);
		$imageUrl = Str::findFirstImage($readme);

		if (!$imageUrl) {
			FileSystem::write($cachePath, '');

			return '';
		}

		$RemoteFile = new RemoteFile($imageUrl);
		$download = $RemoteFile->getLocalCopy();

		$Image = new Image($download, 400, 300, true);
		$thumbnail = AM_BASE_URL . $Image->file;

		FileSystem::write($cachePath, $thumbnail);

		return $thumbnail;
	}


	/**
	 * Get the rendered README for a given package repository.
	 *
	 * @param string $repository
	 * @return string the thumbnail URL
	 */
	private static function getReadme(string $repository): string
	{
		$repositorySlug = Str::stripStart($repository, 'https://github.com/');

		preg_match(
			'#href="/' . $repositorySlug . '/blob/(\w+)/(readme[\w\.]*)"#i',
			Fetch::get($repository),
			$matches
		);

		if (empty($matches) || empty($matches[1]) || empty($matches[2])) {
			return '';
		}

		$blob = 'https://raw.githubusercontent.com/' . $repositorySlug . '/' . $matches[1] . '/' . $matches[2];
		$raw = Fetch::get($blob);

		return Str::markdown($raw);
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzA0MjU2ODU0NDUxODQ1MyAzMTA5MzY4MjkyMjEzOSA0NTY4NDczMjU2Mzk0NTcz