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<?php
/**
 * @package LiveUpdate
 * @copyright Copyright ©2011 Nicholas K. Dionysopoulos / AkeebaBackup.com
 * @license GNU LGPLv3 or later <http://www.gnu.org/copyleft/lesser.html>
 * 
 * One-click updater for Joomla! extensions
 * Copyright (C) 2011  Nicholas K. Dionysopoulos / AkeebaBackup.com
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

defined('_JEXEC') or die();

require_once dirname(__FILE__).'/classes/abstractconfig.php';
require_once dirname(__FILE__).'/config.php';

class LiveUpdate
{
	/** @var string The current version of Akeeba Live Update */
	public static $version = '1.1';
	
	/**
	 * Loads the translation strings -- this is an internal function, called automatically
	 */
	private static function loadLanguage()
	{
		// Load translations
		$basePath = dirname(__FILE__);
		$jlang =& JFactory::getLanguage();
		$jlang->load('liveupdate', $basePath, 'en-GB', true); // Load English (British)
		$jlang->load('liveupdate', $basePath, $jlang->getDefault(), true); // Load the site's default language
		$jlang->load('liveupdate', $basePath, null, true); // Load the currently selected language
	}
	
	/**
	 * Handles requests to the "liveupdate" view which is used to display
	 * update information and perform the live updates
	 */
	public static function handleRequest()
	{
		// Load language strings
		self::loadLanguage();
		
		// Load the controller and let it run the show
		require_once dirname(__FILE__).'/classes/controller.php';
		$controller = new LiveUpdateController();
		$controller->execute(JRequest::getCmd('task','overview'));
		$controller->redirect();
	}
	
	/**
	 * Returns update information about your extension, based on your configuration settings
	 * @return stdClass
	 */
	public static function getUpdateInformation($force = false)
	{
		require_once dirname(__FILE__).'/classes/updatefetch.php';
		$update = new LiveUpdateFetch();
		$info = $update->getUpdateInformation($force);
		$hasUpdates = $update->hasUpdates();
		$info->hasUpdates = $hasUpdates;
		
		$config = LiveUpdateConfig::getInstance();
		$extInfo = $config->getExtensionInformation();
		
		$info->extInfo = (object)$extInfo;
		
		return $info;
	}
	
	public static function getIcon($config=array())
	{
		// Load language strings
		self::loadLanguage();
		
		$defaultConfig = array(
			'option'			=> JRequest::getCmd('option',''),
			'view'				=> 'liveupdate',
			'mediaurl'			=> JURI::base().'components/'.JRequest::getCmd('option','').'/liveupdate/assets/'
		);
		$c = array_merge($defaultConfig, $config);
		
		$url = 'index.php?option='.$c['option'].'&view='.$c['view'];
		$img = $c['mediaurl'];
		
		$updateInfo = self::getUpdateInformation();
		if(!$updateInfo->supported) {
			// Unsupported
			$class = 'liveupdate-icon-notsupported';
			$img .= 'nosupport-32.png';
			$lbl = JText::_('LIVEUPDATE_ICON_UNSUPPORTED');
		} elseif($updateInfo->stuck) {
			// Stuck
			$class = 'liveupdate-icon-crashed';
			$img .= 'nosupport-32.png';
			$lbl = JText::_('LIVEUPDATE_ICON_CRASHED');
		} elseif($updateInfo->hasUpdates) {
			// Has updates
			$class = 'liveupdate-icon-updates';
			$img .= 'update-32.png';
			$lbl = JText::_('LIVEUPDATE_ICON_UPDATES');
		} else {
			// Already in the latest release
			$class = 'liveupdate-icon-noupdates';
			$img .= 'current-32.png';
			$lbl = JText::_('LIVEUPDATE_ICON_CURRENT');
		}
		
		return '<div class="icon"><a href="'.$url.'">'.
			'<div><img src="'.$img.'" width="32" height="32" border="0" align="middle" style="float: none" /></div>'.
			'<span class="'.$class.'">'.$lbl.'</span></a></div>';
	}
}