<?php

namespace Automad\Engine\Processors;

use Automad\Engine\PatternAssembly;

/**
 * The URL processor class.
 *
 * @author Marc Anton Dahmen
 * @copyright Copyright (c) 2021-2023 by Marc Anton Dahmen - https://marcdahmen.de
 * @license MIT license - https://automad.org/license
 */
class URLProcessor
{
	/**
	 * Find and resolve URLs using the specified resolving method and parameters.
	 *
	 * @param string $str
	 * @param string $method
	 * @param array $parameters
	 * @return string the processed string
	 */
	public static function resolveUrls(string $str, string $method, array $parameters = array()): string
	{
		$method = '\Automad\Core\Resolve::' . $method;

		// Find URLs in markdown like ![...](image.jpg?100x100).
		$str = preg_replace_callback(
			'/(\!\[[^\]]*\]\()([^\)]+\.(?:jpg|jpeg|gif|png))([^\)]*\))/is',
			function ($match) use ($method, $parameters) {
				$parameters = array_merge(array(0 => $match[2]), $parameters);
				$url = call_user_func_array($method, $parameters);

				if (file_exists(AM_BASE_DIR . $url)) {
					return $match[1] . $url . $match[3];
				} else {
					return $match[0];
				}
			},
			$str
		);

		// Remove all temporary edit buttons inside HTML tags to avoid confusing the URL resolver.
		$str = preg_replace_callback(
			'/<([^>]+)>/s',
			function ($match) {
				return '<' . preg_replace('/' . PatternAssembly::inPageEditButton() . '/s', '', $match[1]) . '>';
			},
			$str
		);

		// Find URLs in action, href and src attributes.
		// Note that all URLs in markdown code blocks will be ignored (<[^>]+).
		$str = preg_replace_callback(
			'/(<[^>]+(?:action|href|src))=((?:\\\\)?")(.+?)((?:\\\\)?")/is',
			function ($match) use ($method, $parameters) {
				$parameters = array_merge(array(0 => $match[3]), $parameters);
				$url = call_user_func_array($method, $parameters);
				// Matches 2 and 4 are quotes.
				return $match[1] . '=' . $match[2] . $url . $match[4];
			},
			$str
		);

		// Inline styles (like background-image).
		// Note that all URLs in markdown code blocks will be ignored (<[^>]+).
		$str = preg_replace_callback(
			'/(<[^>]+)url\(\'?(.+?)\'?\)/is',
			function ($match) use ($method, $parameters) {
				$parameters = array_merge(array(0 => $match[2]), $parameters);
				$url = call_user_func_array($method, $parameters);

				return $match[1] . 'url(\'' . $url . '\')';
			},
			$str
		);

		// Image srcset attributes.
		// Note that all URLs in markdown code blocks will be ignored (<[^>]+).
		$str = preg_replace_callback(
			'/(<[^>]+srcset)=((?:\\\\)?")([^"]+)((?:\\\\)?")/is',
			function ($match) use ($method, $parameters) {
				$urls = preg_replace_callback(
					'/([^,\s]+)\s+(\w+)/is',
					function ($match) use ($method, $parameters) {
						$parameters = array_merge(array(0 => $match[1]), $parameters);

						return call_user_func_array($method, $parameters) . ' ' . $match[2];
					},
					$match[3]
				);
				// Matches 2 and 4 are quotes.
				return $match[1] . '=' . $match[2] . $urls . $match[4];
			},
			$str
		);

		return $str;
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzMxMjg0ODMxMDkyODIxMSA3NDUzNzA2MTAwMDAwNDY4IDQyNzY3NDUxMzQzNjY5Ng==