<?PHP
/* Copyright 2019-2020, Lime Technology
 * Copyright 2019-2020, Andrew Zawadzki.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2,
 * as published by the Free Software Foundation.
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 */

$docroot = $docroot ?? $_SERVER['DOCUMENT_ROOT'] ?: '/usr/local/emhttp';
require_once "$docroot/plugins/dynamix.plugin.manager/include/PluginHelpers.php";

function download_url($url, $path = "") {
	$ch = curl_init();
	curl_setopt($ch,CURLOPT_URL,$url);
	curl_setopt($ch,CURLOPT_FRESH_CONNECT,true);
	curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
	curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,15);
	curl_setopt($ch,CURLOPT_TIMEOUT,45);
	curl_setopt($ch,CURLOPT_ENCODING,"");
	curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
	curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
	$out = curl_exec($ch);
	curl_close($ch);
	if ( $path )
		file_put_contents($path,$out);

	return $out ?: false;
}

switch ($_POST['action']) {
	case 'checkPlugin':
		$options = $_POST['options'];
		$plugin = $options['plugin'];

		if ( ! $plugin || ! file_exists("/var/log/plugins/$plugin") ) {
			echo json_encode(array("updateAvailable"=>false));
			break;
		}

		exec("mkdir -p /tmp/plugins");
		@unlink("/tmp/plugins/$plugin");
		$url = @plugin("pluginURL","/boot/config/plugins/$plugin");
		download_url($url,"/tmp/plugins/$plugin");

		$changes = @plugin("changes","/tmp/plugins/$plugin");
		$version = @plugin("version","/tmp/plugins/$plugin");
		$installedVersion = @plugin("version","/boot/config/plugins/$plugin");
		$min = @plugin("min","/tmp/plugins/$plugin") ?: "6.4.0";
		if ( $changes ) {
			file_put_contents("/tmp/plugins/".pathinfo($plugin, PATHINFO_FILENAME).".txt",$changes);
		} else {
			@unlink("/tmp/plugins/".pathinfo($plugin, PATHINFO_FILENAME).".txt");
		}

		$update = false;
		if ( strcmp($version,$installedVersion) > 0 ) {
			$unraid = parse_ini_file("/etc/unraid-version");
			$update = (version_compare($min,$unraid['version'],">")) ? false : true;
		}

		echo json_encode(array("updateAvailable" => $update,"version" => $version,"min"=>$min,"changes"=>$changes,"installedVersion"=>$installedVersion));
		break;
	
	case 'addRebootNotice':
		$message = htmlspecialchars(trim($_POST['message']));
		if (!$message) break;
		
		$existing = @file("/tmp/reboot_notifications",FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) ?: array();
		$existing[] = $message;
		
		file_put_contents("/tmp/reboot_notifications",implode("\n",array_unique($existing)));
		break;
	
	case 'removeRebootNotice':
		$message = htmlspecialchars(trim($_POST['message']));
		$existing = file_get_contents("/tmp/reboot_notifications");
		$newReboots = str_replace($message,"",$existing);
		file_put_contents("/tmp/reboot_notifications",$newReboots);
		break;
}	
?>