<?php   
    /*
    Copyright (C) 2001-2004 ZZOSS GbR, http://www.zzoss.com

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    */
    
    /**
    @version $Id: online_update_process.php,v 1.2 2004/03/05 14:25:25 ordnas Exp $
    @copyright Copyright &copy; 2001-2004 ZZ/OSS GbR, http://www.zzoss.com
    @license http://opensource.org/licenses/lgpl-license.php GNU Lesser General Public License
    */
	  
	// execute init file
	require_once 'inc/init.php';
	// installer utils
	require_once 'ZZOSS_Installer/Utils.php';
	// config xml parser
	require_once 'ZZOSS_Config/Config.php';

    /***************************************************************************   
    * INSTALLER FRAMEWORK FUNCTIONS                                            *   
    ***************************************************************************/   
	
    /***************************************************************************   
    * SCRIPT FUNCTIONS                                                         *   
    ***************************************************************************/   

	function downloadPackage($package) {
		$file = $GLOBALS["application_dir"].'downloads/'.$package["name"].'-'.$package["release"]["version"].'.tgz';
		if(is_array($package["filelist"]["file"])) {
			if(isset($package["filelist"]["file"][0])) {
				foreach($package["filelist"]["file"] as $url) {
					if($url["@"]["role"] == 'package') {
						$download_url = $url;
					}
				}
			} else {
				$download_url = $package["filelist"]["file"];
			}
			$result = ZZOSS_InstallerUtils::downloadFile(
				$download_url["#"],
				$file
			);

		}
		if($result) {
			return 'done';
		} else {
			return 'failed';
		}
	}
	
    /***************************************************************************   
    * STARTUP                                                                  *   
    ***************************************************************************/   

	$file = 'data/installer/remote_application.xml';
	$remote_application_xml = new ZZOSS_Config(array('numeric' => array('package', 'plugin')));
	$remote_application_xml->setFile($file);
	$remote_application = $remote_application_xml->query('/application');
	
	$file = 'data/installer/remote_applications.xml';
	$remote_applications_xml = new ZZOSS_Config();
	$remote_applications_xml->setFile($file);
	$remote_applications = $remote_applications_xml->query('/applications/application');
	$remote_application_metadata = $remote_applications[$_REQUEST['application']];

	$file = 'data/installer/remote_packages.xml';
	if(file_exists($file)) {
		unlink($file);
	}
	if(is_array($remote_application_metadata["filelist"]["descriptor"])) {
		foreach($remote_application_metadata["filelist"]["descriptor"] as $descriptor) {
			if($descriptor["@"]["role"] == 'packages') {
				ZZOSS_InstallerUtils::downloadFile(
					$descriptor["#"],
					$file
				);
			}
		}
	}

	if(!file_exists($file)) {
		// error, since file does not exist
		$error = 'unable to download package information';
	} else {
		$remote_packages_xml = new ZZOSS_Config( array(	'numeric' => array('file', 'package')
														) );
		$remote_packages_xml->setFile($file);
		$remote_packages = $remote_packages_xml->query('/packages/package');
	}

	// compose array
	if(is_array($remote_application["release"]["packages"]["package"])) {
		foreach($remote_application["release"]["packages"]["package"] as $package) {
			$remote_packages_install[$package["@"]["name"]] = $package["@"]["version"];
		}
	}
	
	if(!isset($error)) {
		// create directory for new application
		$application_dir = 'data/applications/'.$remote_application["name"].'/';
		mkdir($application_dir);
		copy('data/installer/remote_application.xml', $application_dir.'application.xml');
		copy('data/installer/remote_packages.xml', $application_dir.'installer/remote_packages.xml');
		mkdir($application_dir.'installer');
		mkdir($application_dir.'downloads');
		mkdir($application_dir.'packages');
		mkdir($application_dir.'packages_installed');
		mkdir($application_dir.'cache');
		mkdir($application_dir.'plugins');
		
		// set rebuild applications flag
		$fp = fopen("data/installer/applications.lock","w");
		fputs($fp,'dummy');
		fclose($fp);
	}
	
    /***************************************************************************   
    * PAGE CONTENT                                                             *   
    ***************************************************************************/   

	if(isset($error)) {
		include 'themes/'.$GLOBALS['ZI']['theme'].'/header.php';
		?>
		<h1>Download Application: Error</h1>
		<?php echo $error;?>	
		<br clear="all"/>
		<?php
		$zi_buttons['next'] = "applications.php";
		include 'themes/'.$GLOBALS['ZI']['theme'].'/footer.php';
	} else {
		header("Location: applications.php");
	}
?>