<?php
/**
 * @package   	JCE
 * @copyright 	Copyright © 2009-2011 Ryan Demmer. All rights reserved.
 * @license   	GNU/GPL 2 or later - http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * JCE is free software. This version may have been modified pursuant
 * to the GNU General Public License, and as distributed it includes or
 * is derivative of works licensed under the GNU General Public License or
 * other free or open source software licenses.
 */

defined('_JEXEC') or die('RESTRICTED');

wfimport('editor.libraries.classes.error');
wfimport('editor.libraries.classes.utility');
wfimport('editor.libraries.classes.token');
wfimport('editor.libraries.classes.document');
wfimport('editor.libraries.classes.view');
wfimport('editor.libraries.classes.tabs');
wfimport('editor.libraries.classes.request');

/**
 * JCE class
 *
 * @static
 * @package		JCE
 * @since	1.5
 */

class WFEditor extends JObject {
	/**
	 * @var varchar
	 */
	private $_version = '2.0.18';

	/**
	 * Constructor activating the default information of the class
	 *
	 * @access	protected
	 */
	public function __construct($config = array()) {
		$this->setProperties($config);
	}

	/**
	 * Returns a reference to a editor object
	 *
	 * This method must be invoked as:
	 * 		<pre>  $browser =JContentEditor::getInstance();</pre>
	 *
	 * @access	public
	 * @return	JCE  The editor object.
	 */
	public function & getInstance() {
		static $instance;

		if (!is_object($instance)) {
			$instance = new WFEditor();
		}
		return $instance;
	}

	/**
	 * Get the current version
	 * @access protected
	 * @return string
	 */
	protected function getVersion() {
		return $this->get('_version');
	}

	/**
	 * Get the Super Administrator status
	 *
	 * Determine whether the user is a Super Administrator
	 * @access protected
	 * @return boolean
	 */
	protected function isSuperAdmin() {
		$user = JFactory::getUser();

		if (WF_JOOMLA15) {
			return (strtolower($user->usertype) == 'superadministrator' || strtolower($user->usertype) == 'super administrator' || $user->gid == 25) ? true : false;
		}
		return false;
	}

	/**
	 * Get an appropriate editor profile
	 * @access public
	 * @return $profile Object
	 */
	public function getProfile() {
		static $profile;

		if (!is_object($profile)) {
			$mainframe = JFactory::getApplication();

			$db = JFactory::getDBO();
			$user = JFactory::getUser();
			$option = $this->getComponentOption();

			$query = 'SELECT *' . ' FROM #__wf_profiles' . ' WHERE published = 1' . ' ORDER BY ordering ASC';
			$db->setQuery($query);
			$profiles = $db->loadObjectList();

			if ($option == 'com_jce') {				
				$component_id = JRequest::getInt('component_id');

				if ($component_id) {
					$component = WFExtensionHelper::getComponent($component_id);
					$option = isset($component->element) ? $component->element : $component->option;
				}
			}

			$area = $mainframe->isAdmin() ? 2 : 1;

			foreach ($profiles as $item) {
				// check if option is in list
				$isComponent = in_array($option, explode(',', $item->components));

				// Set area default as Front-end / Back-end
				if (!isset($item->area) || $item->area == '') {
					$item->area = 0;
				}

				if ($item->area == $area || $item->area == 0) {
					// Check user
					if ($user->id && in_array($user->id, explode(',', $item->users))) {
						if ($item->components) {
							if ($isComponent) {
								$profile = $item;
								return $profile;
							}
						} else {
							$profile = $item;
							return $profile;
						}
					}

					// Joomla! 1.6+
					if (method_exists('JUser', 'getAuthorisedGroups')) {
						$keys = $user->getAuthorisedGroups();
					} else {
						$keys = array($user->gid);
					}

					if ($item->types) {
						$groups = array_intersect($keys, explode(',', $item->types));

						if (!empty($groups)) {
							// Check components
							if ($item->components) {
								if ($isComponent) {
									$profile = $item;
									return $profile;
								}
							} else {
								$profile = $item;
								return $profile;
							}
						}
					}

					// Check components only
					if ($item->components && $isComponent) {
						$profile = $item;
						return $profile;
					}
				}
			}

			return null;
		}

		return $profile;
	}

	/**
	 * Get the component option
	 * @access private
	 * @return string
	 */
	private function getComponentOption() {
		$option = JRequest::getCmd('option', '');

		switch ($option) {
			case 'com_section' :
				$option = 'com_content';
				break;
			case 'com_categories' :
				$section = JRequest::getVar('section');
				if ($section) {
					$option = $section;
				}
				break;
		}

		return $option;
	}

	/**
	 * Get editor parameters
	 * @access  public
	 * @param 	array $options
	 * @return 	object
	 */
	public function getParams($options = array()) {
		static $params;

		if (!isset($params)) {
			$params = array();
		}

		// set blank key if not set
		if (!isset($options['key'])) {
			$options['key'] = '';
		}
		// set blank path if not set
		if (!isset($options['path'])) {
			$options['path'] = '';
		}

		$signature = serialize($options);

		if (empty($params[$signature])) {
			wfimport('admin.helpers.extension');
			// get component
			$component = WFExtensionHelper::getComponent();
			// get params data for this profile
			$profile = $this->getProfile();

			$profile_params = array();
			$component_params = array();

			if (!empty($component->params)) {
				$component_params = json_decode($component->params, true);
				// set null as array
				if (!$component_params) {
					$component_params = array();
				}
			}

			if ($profile) {
				$profile_params = json_decode($profile->params, true);
				// set null as array
				if (!$profile_params) {
					$profile_params = array();
				}
			}

			// merge data and convert to json string
			$data = WFParameter::mergeParams($component_params, $profile_params);

			$params[$signature] = new WFParameter($data, $options['path'], $options['key']);
		}

		return $params[$signature];
	}

	/**
	 * Remove linebreaks and carriage returns from a parameter value
	 *
	 * @return The modified value
	 * @param string	The parameter value
	 */
	protected function cleanParam($param) {
		if (is_array($param)) {
			$param = implode('|', $param);
		}
		return trim(preg_replace('/\n|\r|\t(\r\n)[\s]+/', '', $param));
	}

	/**
	 * Get a parameter by key
	 * @param $key Parameter key eg: editor.width
	 * @param $fallback Fallback value
	 * @param $default Default value
	 */
	public function getParam($key, $fallback = '', $default = '', $type = 'string', $allowempty = true) {		
		// get all keys
		$keys = explode('.', $key);

		// remove base key eg: 'editor'
		$base = array_shift($keys);
		
		// get params for base key
		$params = self::getParams(array('key' => $base));
		// get a parameter
		
		$param = $params->get($keys, $fallback, $allowempty);

		if (is_string($param) && $type === 'string') {
			$param = self::cleanParam($param);
		}

		if (is_numeric($default)) {
			$default = intval($default);
		}

		if (is_numeric($param)) {
			$param = intval($param);
		}

		if ($param === $default) {
			return '';
		}

		if ($type === 'boolean') {
			$param = (bool)$param;
		}

		return $param;
	}

	protected function checkLanguage($tag) {
		$file = JPATH_SITE . DS . 'language' . DS . $tag . DS . $tag . '.com_jce.xml';

		if (file_exists($file)) {
			wfimport('admin.helpers.xml');

			$xml = WFXMLHelper::getXML($file);

			if ($xml) {
				$version = WFXMLHelper::getAttribute($xml, 'version');

				if ($version == '2.0') {
					return true;
				}
			}
		}

		return false;
	}

	/**
	 * Load a language file
	 *
	 * @param string $prefix Language prefix
	 * @param object $path[optional] Base path
	 */
	protected function loadLanguage($prefix, $path = JPATH_SITE) {
		$language = JFactory::getLanguage();
		$tag = $this->getLanguageTag();

		$language->load($prefix, $path, $tag, true);
	}

	/**
	 * Return the curernt language code
	 *
	 * @access public
	 * @return language code
	 */
	public function getLanguageDir() {
		$language = JFactory::getLanguage();
		$tag = $this->getLanguageTag();

		if ($language->getTag() == $tag) {
			return $language->isRTL() ? 'rtl' : 'ltr';
		}

		return 'ltr';
	}

	/**
	 * Return the curernt language code
	 *
	 * @access public
	 * @return language code
	 */
	protected function getLanguageTag() {
		$language = JFactory::getLanguage();
		$tag = $language->getTag();

		static $_language;

		if (!isset($_lanugage)) {
			if ($this->checkLanguage($tag)) {
				$_language = $tag;
			} else {
				$_language = 'en-GB';
			}
		}

		return $_language;
	}

	/**
	 * Return the curernt language code
	 *
	 * @access public
	 * @return language code
	 */
	public function getLanguage() {
		$tag = $this->getLanguageTag();

		return substr($tag, 0, strpos($tag, '-'));
	}

	/**
	 * Named wrapper to check access to a feature
	 *
	 * @access 			public
	 * @return 			string
	 */
	public function checkUser() {
		return $this->getProfile();
	}

	/**
	 * XML encode a string.
	 *
	 * @access	public
	 * @param 	string	String to encode
	 * @return 	string	Encoded string
	 */
	public function xmlEncode($string) {
		return preg_replace(array('/&/', '/</', '/>/', '/\'/', '/"/'), array('&amp;', '&lt;', '&gt;', '&apos;', '&quot;'), $string);
	}

	/**
	 * XML decode a string.
	 *
	 * @access	public
	 * @param 	string	String to decode
	 * @return 	string	Decoded string
	 */
	public function xmlDecode($string) {
		return preg_replace(array('&amp;', '&lt;', '&gt;', '&apos;', '&quot;'), array('/&/', '/</', '/>/', '/\'/', '/"/'), $string);
	}

	protected function log($file, $msg) {
		jimport('joomla.error.log');
		$log = JLog::getInstance($file);
		$log->addEntry(array('comment' => 'LOG: ' . $msg));
	}

}
?>