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<?php
/**
 * @package   AkeebaBackup
 * @copyright Copyright (c)2009-2014 Nicholas K. Dionysopoulos
 * @license   GNU General Public License version 3, or later
 *
 * @since     2.1
 */

// Protect from unauthorized access
defined('_JEXEC') or die();

use Akeeba\Engine\Factory;
use Akeeba\Engine\Platform;

/**
 * Extension Filters model
 *
 */
class AkeebaModelExtfilters extends F0FModel
{
	private $jversion;

	public function __construct($options = array())
	{
		JLoader::import('joomla.filesystem.file');

		parent::__construct($options);
	}

	/**
	 * Gets a list of installed non-core components
	 *
	 * @param bool $reload When true, it forces reloading the list (bust cache)
	 *
	 * @return array An array holding component information
	 * @access public
	 */
	public function &getComponents($reload = false)
	{
		static $_data;

		if ( !$_data || $reload)
		{
			// Get a list of components
			$db = JFactory::getDBO();

			$query = $db->getQuery(true)
						->select(array(
							'*',
							$db->qn('element') . ' AS ' . $db->qn('option'),
							$db->qn('extension_id') . ' AS ' . $db->qn('id'),
						))->from($db->qn('#__extensions'))
						->where($db->qn('type') . ' = ' . $db->q('component'))
						->where($db->qn('protected') . ' = ' . $db->q('0'))
						->order($db->qn('name'));
			$db->setQuery($query);
			$rows = $db->loadObjectList();

			// Get a list of applied filters
			$filter = Factory::getFilterObject('components');

			$_data = array();

			$numRows = count($rows);
			for ($i = 0; $i < $numRows; $i++)
			{
				$row     =& $rows[$i];
				$_data[] = array(
					'name'   => $row->name,
					'root'   => 'default',
					'item'   => $row->option,
					'status' => $filter->isFiltered($row->option, 'default', 'components', 'all')
				);
			}
		}

		return $_data;
	}

	/**
	 * Toggles the filtering status for a component
	 *
	 * @param    string $root Filter root (for components it's always 'default')
	 * @param    string $item Component's option name (e.g. 'com_foobar')
	 */
	public function toggleComponentFilter($root, $item)
	{
		$filter = Factory::getFilterObject('components');
		$filter->toggle($root, $item, $newStatus);
		$filters = Factory::getFilters();
		$filters->save();
	}

	/**
	 * Gets an array of all installed modules.
	 *
	 * @param bool $reload Force reload of the list when true
	 *
	 * @return array
	 * @access public
	 */
	public function &getModules($reload = false)
	{
		static $_data;

		if ( !$_data || $reload)
		{
			$db = JFactory::getDBO();

			$query = $db->getQuery(true)
						->select(array(
							'*',
							$db->qn('name') . ' AS ' . $db->qn('title'),
							$db->qn('element') . ' AS ' . $db->qn('module'),
							$db->qn('extension_id') . ' AS ' . $db->qn('id'),
						))->from($db->qn('#__extensions'))
						->where($db->qn('type') . ' = ' . $db->q('module'))
						->where($db->qn('protected') . ' = ' . $db->q('0'))
						->order($db->qn('name'));
			$db->setQuery($query);
			$rows = $db->loadObjectList();

			$_data  = array();
			$filter = Factory::getFilterObject('modules');

			$n = count($rows);
			for ($i = 0; $i < $n; $i++)
			{
				$row     = &$rows[$i];
				$root    = ($row->client_id == 0) ? 'frontend' : 'backend';
				$_data[] = array(
					'name'   => $row->title,
					'root'   => $root,
					'item'   => $row->module,
					'status' => $filter->isFiltered($row->module, $root, 'modules', 'all')
				);
			}
		}

		return $_data;
	}

	/**
	 * Toggles the filtering status for a module
	 *
	 * @param    string $root Filter root (frontend|backend)
	 * @param    string $item Modules's option name (e.g. 'mod_foobar')
	 */
	public function toggleModuleFilter($root, $item)
	{
		$filter = Factory::getFilterObject('modules');
		$filter->toggle($root, $item, $newStatus);
		$filters = Factory::getFilters();
		$filters->save();
	}

	public function &getPlugins($reload = false)
	{
		static $_data;

		if ( !$_data || $reload)
		{
			$db = JFactory::getDBO();

			$query = $db->getQuery(true)
						->select(array(
							'*',
							$db->qn('name') . ' AS ' . $db->qn('title'),
							$db->qn('element') . ' AS ' . $db->qn('module'),
							$db->qn('extension_id') . ' AS ' . $db->qn('id'),
						))->from($db->qn('#__extensions'))
						->where($db->qn('type') . ' = ' . $db->q('plugin'))
						->where($db->qn('protected') . ' = ' . $db->q('0'))
						->order($db->qn('name'));
			$db->setQuery($query);
			$rows = $db->loadObjectList();

			$_data = array();

			$filter = Factory::getFilterObject('plugins');
			$n      = count($rows);
			for ($i = 0; $i < $n; $i++)
			{
				$row     = &$rows[$i];
				$_data[] = array(
					'name'   => $row->name,
					'root'   => $row->folder,
					'item'   => $row->element,
					'status' => $filter->isFiltered($row->element, $row->folder, 'plugins', 'all')
				);
			}
		}

		return $_data;
	}

	/**
	 * Toggles the filtering status for a plugin
	 *
	 * @param    string $root Filter root (plugin type)
	 * @param    string $item Modules's option name (e.g. 'plg_foobar')
	 */
	public function togglePluginFilter($root, $item)
	{
		$filter = Factory::getFilterObject('plugins');
		$filter->toggle($root, $item, $newStatus);
		$filters = Factory::getFilters();
		$filters->save();
	}


	// ========================================================================
	// Languages filter interface
	// ========================================================================

	/**
	 * Returns an annotated list of all front-end or back-end languages
	 *
	 * @param bool $frontend If true returns front-end languages, if false returns back-end languages
	 *
	 * @return array The annotated languages array
	 */
	private function &_getAllLanguages($frontend = true)
	{
		static $_feLanguages;
		static $_beLanguages;

		if ($frontend)
		{
			if ( !$_feLanguages)
			{
				$_feLanguages = array();
				JLoader::import('joomla.filesystem.folder');

				// Get the site languages
				$langBDir = JLanguage::getLanguagePath(JPATH_SITE);
				$langDirs = JFolder::folders($langBDir);

				for ($i = 0; $i < count($langDirs); $i++)
				{
					// Try to find VALID languages, by scanning and parsing their XML files
					$row             = array();
					$row['language'] = $langDirs[$i];
					$row['basedir']  = $langBDir;
					$files           = JFolder::files($langBDir . '/' . $langDirs[$i], '^([-_A-Za-z]*)\.xml$');
					foreach ($files as $file)
					{
						$data = JApplicationHelper::parseXMLLangMetaFile($langBDir . '/' . $langDirs[$i] . '/' . $file);

						// If we didn't get valid data from the xml file, move on...
						if ( !is_array($data))
						{
							continue;
						}

						// Populate the row from the xml meta file
						foreach ($data as $key => $value)
						{
							$row[$key] = $value;
						}

						$clientVals     = JApplicationHelper::getClientInfo(0);
						$lang           = JComponentHelper::getParams('com_languages');
						$row['default'] = ($lang->get($clientVals->name, 'en-GB') == basename($row['language']));
					}
					if (isset($row['default']))
					{
						$_feLanguages[] = $row;
					}
				}
			}

			return $_feLanguages;
		}
		else
		{
			if ( !$_beLanguages)
			{
				$_beLanguages = array();
				JLoader::import('joomla.filesystem.folder');

				// Get the site languages
				$langBDir = JLanguage::getLanguagePath(JPATH_ADMINISTRATOR);
				$langDirs = JFolder::folders($langBDir);

				for ($i = 0; $i < count($langDirs); $i++)
				{
					// Try to find VALID languages, by scanning and parsing their XML files
					$row             = array();
					$row['language'] = $langDirs[$i];
					$row['basedir']  = $langBDir;
					$files           = JFolder::files($langBDir . '/' . $langDirs[$i], '^([-_A-Za-z]*)\.xml$');
					foreach ($files as $file)
					{
						$data = JApplicationHelper::parseXMLLangMetaFile($langBDir . '/' . $langDirs[$i] . '/' . $file);

						// If we didn't get valid data from the xml file, move on...
						if ( !is_array($data))
						{
							continue;
						}

						// Populate the row from the xml meta file
						foreach ($data as $key => $value)
						{
							$row[$key] = $value;
						}

						$clientVals     = JApplicationHelper::getClientInfo(1);
						$lang           = JComponentHelper::getParams('com_languages');
						$row['default'] = ($lang->get($clientVals->name, 'en-GB') == basename($row['language']));
					}
					if (isset($row['default']))
					{
						$_beLanguages[] = $row;
					}
				}
			}

			return $_beLanguages;
		}
	}

	public function &getLanguages($reload = false)
	{
		static $_data;

		if ( !$_data || $reload)
		{
			$_data = array();

			$filter = Factory::getFilterObject('languages');

			// Add non-default front-end languages
			$feLang = $this->_getAllLanguages(true);
			if (count($feLang) > 0)
			{
				foreach ($feLang as $lang)
				{
					if ( !$lang['default'])
					{
						$lang['name']   = $lang['language'];
						$lang['item']   = $lang['language'];
						$lang['root']   = 'frontend';
						$lang['status'] = $filter->isFiltered($lang['language'], 'frontend', 'languages', 'all');
						$_data[]        = $lang;
					}
				}
			}

			// Add non-default back-end languages
			$beLang = $this->_getAllLanguages(false);
			if (count($beLang) > 0)
			{
				foreach ($beLang as $lang)
				{
					if ( !$lang['default'])
					{
						$lang['name']   = $lang['language'];
						$lang['item']   = $lang['language'];
						$lang['root']   = 'backend';
						$lang['status'] = $filter->isFiltered($lang['language'], 'backend', 'languages', 'all');
						$_data[]        = $lang;
					}
				}
			}
		}

		return $_data;
	}

	public function toggleLanguageFilter($root, $item)
	{
		$filter = Factory::getFilterObject('languages');
		$filter->toggle($root, $item, $newStatus);
		$filters = Factory::getFilters();
		$filters->save();
	}


	/**
	 * Returns an annotated list of all front-end or back-end templates
	 *
	 * @param bool $frontend If true returns front-end templates, if false returns back-end templates
	 *
	 * @return array The annotated templates array
	 */
	private function &_getAllTemplates($frontend = true)
	{
		static $_feTemplates;
		static $_beTemplates;

		if ($frontend)
		{
			if ( !$_feTemplates)
			{
				$_feTemplates = array();
				JLoader::import('joomla.filesystem.folder');

				// Get the site languages
				$tempBDir = JPATH_SITE . '/templates';
				$tempDirs = JFolder::folders($tempBDir);

				// Get a list of the currently active templates
				$db    = $this->getDBO();
				$query = $db->getQuery(true)
							->select(array(
								'*',
								$db->qn('element') . ' AS ' . $db->qn('template'),
								$db->qn('extension_id') . ' AS ' . $db->qn('id'),
							))->from($db->qn('#__extensions'))
							->where($db->qn('type') . ' = ' . $db->q('template'))
							->where($db->qn('protected') . ' = ' . $db->q('0'))
							->where($db->qn('client_id') . ' = ' . $db->q('0'))
							->order($db->qn('name'));
				$db->setQuery($query);
				$activeList = $db->loadColumn();

				for ($i = 0; $i < count($tempDirs); $i++)
				{
					// Try to find VALID templates, by scanning and parsing their XML files
					$row             = array();
					$row['template'] = $tempDirs[$i];
					$row['basedir']  = $tempBDir;
					$files           = JFolder::files($tempBDir . '/' . $tempDirs[$i], '.xml$');
					foreach ($files as $file)
					{
						$data = JApplicationHelper::parseXMLInstallFile($tempBDir . '/' . $tempDirs[$i] . '/' . $file);

						// If we didn't get valid data from the xml file, move on...
						if ( !is_array($data))
						{
							continue;
						}

						// Populate the row from the xml meta file
						foreach ($data as $key => $value)
						{
							$row[$key] = $value;
						}

						$row['client_id'] = 0;
						$row['default']   = (in_array($row['template'], $activeList));
					}
					if (isset($row['default']))
					{
						$_feTemplates[] = $row;
					}
				}
			}

			return $_feTemplates;
		}
		else
		{
			if ( !$_beTemplates)
			{
				$_beTemplates = array();
				JLoader::import('joomla.filesystem.folder');

				// Get the site languages
				$tempBDir = JPATH_ADMINISTRATOR . '/templates';
				$tempDirs = JFolder::folders($tempBDir);

				// Get a list of the currently active templates
				$db    = $this->getDBO();
				$query = $db->getQuery(true)
							->select(array(
								'*',
								$db->qn('element') . ' AS ' . $db->qn('template'),
								$db->qn('extension_id') . ' AS ' . $db->qn('id'),
							))->from($db->qn('#__extensions'))
							->where($db->qn('type') . ' = ' . $db->q('template'))
							->where($db->qn('protected') . ' = ' . $db->q('0'))
							->where($db->qn('client_id') . ' = ' . $db->q('1'))
							->order($db->qn('name'));
				$db->setQuery($query);
				$activeList = $db->loadColumn();

				for ($i = 0; $i < count($tempDirs); $i++)
				{
					// Try to find VALID languages, by scanning and parsing their XML files
					$row             = array();
					$row['template'] = $tempDirs[$i];
					$row['basedir']  = $tempBDir;
					$files           = JFolder::files($tempBDir . '/' . $tempDirs[$i], '.xml$');
					foreach ($files as $file)
					{
						$data = JApplicationHelper::parseXMLInstallFile($tempBDir . '/' . $tempDirs[$i] . '/' . $file);

						// If we didn't get valid data from the xml file, move on...
						if ( !is_array($data))
						{
							continue;
						}

						// Populate the row from the xml meta file
						foreach ($data as $key => $value)
						{
							$row[$key] = $value;
						}

						$row['client_id'] = 1;
						$row['default']   = (in_array($row['template'], $activeList));
					}
					if (isset($row['default']))
					{
						$_beTemplates[] = $row;
					}
				}
			}

			return $_beTemplates;
		}
	}

	public function &getTemplates($reload = false)
	{
		static $_data;

		if ( !$_data || $reload)
		{
			$_data = array();

			$filter = Factory::getFilterObject('templates');

			// Add non-default front-end templates
			$feTemp = $this->_getAllTemplates(true);
			if (count($feTemp) > 0)
			{
				foreach ($feTemp as $temp)
				{
					if ( !$temp['default'])
					{
						$temp['name']   = $temp['template'];
						$temp['item']   = $temp['template'];
						$temp['root']   = 'frontend';
						$temp['status'] = $filter->isFiltered($temp['template'], 'frontend', 'templates', 'all');
						$_data[]        = $temp;
					}
				}
			}

			// Add non-default back-end templates
			$beTemp = $this->_getAllTemplates(false);
			if (count($beTemp) > 0)
			{
				foreach ($beTemp as $temp)
				{
					if ( !$temp['default'])
					{
						$temp['name']   = $temp['template'];
						$temp['item']   = $temp['template'];
						$temp['root']   = 'backend';
						$temp['status'] = $filter->isFiltered($temp['template'], 'backend', 'templates', 'all');
						$_data[]        = $temp;
					}
				}
			}
		}

		return $_data;
	}

	public function toggleTemplateFilter($root, $item)
	{
		$filter = Factory::getFilterObject('templates');
		$filter->toggle($root, $item, $newStatus);
		$filters = Factory::getFilters();
		$filters->save();
	}
}