<?php
/**
 * @copyright Copyright (C) 2020, Friendica
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * AJAX synchronisation of notes page
 */

use Friendica\App;
use Friendica\DI;

require_once("mod/notes.php");

function update_notes_content(App $a) {

	$profile_uid = intval($_GET["p"]);

	header("Content-type: text/html");
	echo "<!DOCTYPE html><html><body>\r\n";

	echo "<section>";

	/**
	 *
	 * Grab the page inner contents by calling the content function from the profile module directly,
	 * but move any image src attributes to another attribute name. This is because
	 * some browsers will prefetch all the images for the page even if we don't need them.
	 * The only ones we need to fetch are those for new page additions, which we'll discover
	 * on the client side and then swap the image back.
	 *
	 */

	$text = notes_content($a, $profile_uid);

	if (DI::pConfig()->get(local_user(), "system", "bandwidth_saver")) {
		$replace = "<br />" . DI::l10n()->t("[Embedded content - reload page to view]") . "<br />";
		$pattern = "/<\s*audio[^>]*>(.*?)<\s*\/\s*audio>/i";
		$text = preg_replace($pattern, $replace, $text);
		$pattern = "/<\s*video[^>]*>(.*?)<\s*\/\s*video>/i";
		$text = preg_replace($pattern, $replace, $text);
		$pattern = "/<\s*embed[^>]*>(.*?)<\s*\/\s*embed>/i";
		$text = preg_replace($pattern, $replace, $text);
		$pattern = "/<\s*iframe[^>]*>(.*?)<\s*\/\s*iframe>/i";
		$text = preg_replace($pattern, $replace, $text);
	}

	// reportedly some versions of MSIE don't handle tabs in XMLHttpRequest documents very well
	echo str_replace("\t", "       ", $text);
	echo "</section>";
	echo "</body></html>\r\n";
	exit();
}