<?php
/**
 * @package   LiveUpdate
 * @copyright Copyright (c)2010-2012 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 = $update->hasUpdates($force);
		$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();

		// Initialize the array of button options
		$button = array();

		$defaultConfig = array(
			'option' => JRequest::getCmd('option', ''),
			'view' => 'liveupdate',
			'mediaurl' => JURI::base() . 'components/' . JRequest::getCmd('option', '') . '/liveupdate/assets/'
		);
		$c = array_merge($defaultConfig, $config);

		$button['link'] = 'index.php?option=' . $c['option'] . '&view=' . $c['view'];
		$button['image'] = $c['mediaurl'];

		$updateInfo = self::getUpdateInformation();
		if (!$updateInfo->supported)
		{
			// Unsupported
			$button['class'] = 'liveupdate-icon-notsupported';
			$button['image'] .= 'nosupport-32.png';
			$button['text'] = JText::_('LIVEUPDATE_ICON_UNSUPPORTED');
		}
		elseif ($updateInfo->stuck)
		{
			// Stuck
			$button['class'] = 'liveupdate-icon-crashed';
			$button['image'] .= 'nosupport-32.png';
			$button['text'] = JText::_('LIVEUPDATE_ICON_CRASHED');
		}
		elseif ($updateInfo->hasUpdates)
		{
			// Has updates
			$button['class'] = 'liveupdate-icon-updates';
			$button['image'] .= 'update-32.png';
			$button['text'] = JText::_('LIVEUPDATE_ICON_UPDATES');
		}
		else
		{
			// Already in the latest release
			$button['class'] = 'liveupdate-icon-noupdates';
			$button['image'] .= 'current-32.png';
			$button['text'] = JText::_('LIVEUPDATE_ICON_CURRENT');
		}
		if (version_compare(JVERSION, '2.5', 'ge'))
		{
			return '<div class="icon"><a href="' . $button['link'] . '">' .
			'<div style="text-align: center;"><img src="' . $button['image'] . '" width="32" height="32" border="0" align="middle" style="float: none" /></div>' .
			'<span class="' . $button['class'] . '">' . $button['text'] . '</span></a></div>';
		}
		else
		{
			return '<div class="icon"><a href="' . $button['link'] . '">' .
			'<div><img src="' . $button['image'] . '" width="32" height="32" border="0" align="middle" style="float: none" /></div>' .
			'<span class="' . $button['class'] . '">' . $button['text'] . '</span></a></div>';
		}
	}
}