<?php
/**
* @copyright (C) 2013 iJoomla, Inc. - All rights reserved.
* @license GNU General Public License, version 2 (http://www.gnu.org/licenses/gpl-2.0.html)
* @author iJoomla.com <webmaster@ijoomla.com>
* @url https://www.jomsocial.com/license-agreement
* The PHP code portions are distributed under the GPL license. If not otherwise stated, all images, manuals, cascading style sheets, and included JavaScript *are NOT GPL, and are released under the IJOOMLA Proprietary Use License v1.0
* More info at https://www.jomsocial.com/license-agreement
*/

defined('_JEXEC') or die('Restricted access');

include_once JPATH_BASE.'/components/com_community/libraries/core.php';

function CommunityBuildRoute(&$query)
{
	$app      = JFactory::getApplication();
	$segments = array();
	$config   = CFactory::getConfig();
	$alias    = '';

	// Profile based,
	if (array_key_exists('userid', $query))
	{
		$user       = CFactory::getUser($query['userid']);

		// Since 1.8.x we will generate URLs based on the vanity url.
		$alias      = $user->getAlias();
		$segments[] = $alias;

		unset($query['userid']);
	}

	// @rule: For those my-xxx tasks, we need
	// to force the userid to be rewritten in the URL to maintain compatibility with
	// older URLs.
	if (isset($query['task']) && empty($alias))
	{
		$userTasks = array('myvideos', 'myphotos', 'myevents', 'mygroups');

		if (in_array($query['task'], $userTasks))
		{
			$user       = CFactory::getUser();
			$segments[] = $user->getAlias();
		}
	}

	if (isset($query['view']))
	{
		if (empty($query['Itemid']))
		{
			$segments[] = $query['view'];
		}
		else
		{
			$menu     = $app->getMenu();
			$menuItem = $menu->getItem( $query['Itemid'] );

			if ( ! isset($menuItem->query['view']) || $menuItem->query['view'] != $query['view'])
			{
				$segments[] = $query['view'];
			}
		}

		unset($query['view']);
	}

	if (isset($query['task']))
	{
		switch ($query['task'])
		{
			case 'viewgroup':
				$db         = JFactory::getDBO();
				$groupid    =  $query['groupid'];
				$groupModel =  CFactory::getModel('groups');
				$group      = JTable::getInstance('Group', 'CTable');
				$group->load($groupid);

				$segments[] = $query['task'];
				$groupName	= $group->name;

				//if ($jconfig->get('unicodeslugs', 0) == 1)
				if (JFactory::getConfig()->get('unicodeslugs', 0) == 1)
				{
					$groupName = JFilterOutput::stringURLUnicodeSlug($groupName);
				}
				else
				{
					$groupName = JFilterOutput::stringURLSafe($groupName);
				}

				$segments[] = $groupid . '-' . $groupName;

				unset($query['groupid']);
			break;
			case 'viewevent':
				$id    = $query['eventid'];
				$event = JTable::getInstance('Event' , 'CTable');
				$event->load($id);

				$segments[] = $query['task'];
				$name       = $event->title;

				//if ($jconfig->get('unicodeslugs', 0) == 1)
				if (JFactory::getConfig()->get('unicodeslugs', 0) == 1)
				{
					$name = JFilterOutput::stringURLUnicodeSlug($name);
				}
				else
				{
					$name = JFilterOutput::stringURLSafe($name);
				}

				$name       = urlencode($name);
				$name       = CString::str_ireplace('++', '+', $name);
				$segments[] = $event->id . '-' . $name;

				unset($query['eventid']);
			break;
			case 'video':
				$videoModel	= CFactory::getModel('Videos');
				$videoid	= $query['videoid'];
				$video		= JTable::getInstance('Video' , 'CTable');
				$video->load($videoid);

				// We need the task for video otherwise we cannot differentiate between myvideos
				// and viewing a video since myvideos also doesn't pass any tasks.
				$segments[] = $query['task'];
				$title      = trim($video->title);

				//if ($jconfig->get('unicodeslugs', 0) == 1)
				if (JFactory::getConfig()->get('unicodeslugs', 0) == 1)
				{
					$title = JFilterOutput::stringURLUnicodeSlug($title);
				}
				else
				{
					$title = JFilterOutput::stringURLSafe($title);
				}

				$segments[]	= $video->id.'-'.$title;
				unset($query['videoid']);
			break;
			case 'viewdiscussion':
				$db               = JFactory::getDBO();
				$topicId          =  $query['topicid'];
				$discussionsModel =  CFactory::getModel('discussions');
				$discussions      = JTable::getInstance('Discussion', 'CTable');
				$discussions->load($topicId);

				$segments[]     = $query['task'];
				$discussionName = $discussions->title;

				//if ($jconfig->get('unicodeslugs', 0) == 1)
				if ($app->get('unicodeslugs', 0) == 1)
				{
					$discussionName = JFilterOutput::stringURLUnicodeSlug($discussionName);
				}
				else
				{
					$discussionName = JFilterOutput::stringURLSafe($discussionName);
				}

				$segments[] = $topicId.'-'.$discussionName;

				unset($query['topicid']);
			break;
			case 'viewbulletin':
				$db             = JFactory::getDBO();
				$bulletinid     =  $query['bulletinid'];
				$bulletinsModel =  CFactory::getModel('bulletins');
				$bulletins      = JTable::getInstance( 'Bulletin' , 'CTable' );
				$bulletins->load($bulletinid);

				$segments[]    = $query['task'];
				$bullentinName = $bulletins->title;

				//if ($jconfig->get('unicodeslugs', 0) == 1)
				if ($app->get('unicodeslugs', 0) == 1)
				{
					$bullentinName = JFilterOutput::stringURLUnicodeSlug($bullentinName);
				}
				else
				{
					$bullentinName = JFilterOutput::stringURLSafe($bullentinName);
				}

				$segments[] = $bulletinid . '-' . $bullentinName;

				unset($query['bulletinid']);
			break;
			default:
				if ( ! in_array($query['task'], array('myphotos', 'mygroups', 'myevents', 'myvideos', 'invites')))
				{
					$segments[] = $query['task'];
				}
			break;
		}

		unset($query['task']);
	}

	return $segments;
}

function CommunityParseRoute($segments)
{
	include_once JPATH_BASE.'/components/com_community/libraries/core.php';

	$site 		= JFactory::getApplication();
	$vars         = array();
	$menu         = $site->getMenu();
	$selectedMenu = $menu->getActive();

	// We need to grab the user id first see if the first segment is a user
	// because once CFactory::getConfig is loaded, it will automatically trigger
	// the plugins. Once triggered, the getRequestUser will only get the current user.
	$count = count($segments);

	if ( ! empty($count))
	{
		$alias  = $segments[0];
		$userid = '';

		if ( ! empty($alias))
		{
			// Check if this user exists in the alias
			$userid = CommunityGetUserId($alias);

			//check for alternative alias that might exists
			if(isset($segments[2]) && !$userid && $segments[1] == 'profile' && $segments[0] == 'community'){
				// the user might exists at third slot of the segment
				$alias = $segments[2];
			}

			// Joomla converts ':' to '-' when encoding and during decoding,
			// it converts '-' to ':' back for the query string which will break things
			// if the username has '-'. So we do not have any choice apart from
			// testing both this values until Joomla tries to fix this
			if ( ! $userid && stristr($alias , ':'))
			{
				$userid = CommunityGetUserId(CString::str_ireplace(':', '-', $alias));
			}

			// For users
			if ( ! $userid)
			{

				if (stristr($alias, '-'))
				{
					$user = explode('-', $alias);

					if (isset($user[0]))
					{
						$userid	= $user[0];
					}
				}

				if (stristr($alias, ':'))
				{
					$user = explode('-', CString::str_ireplace(':', '-', $alias));

					if ( isset($user[0]))
					{
						$userid	= $user[0];
					}
				}

				if (!$userid){
					if(isset($segments[1]) && $segments[1] == 'profile'){
                        $site->enqueueMessage(JText::_('COM_COMMUNITY_USER_NOT_FOUND'), 'error');
						$site->redirect(CRoute::_('index.php?option=com_community&view=frontpage', false));
					}
				}
			}
		}

		if ($userid != 0)
		{
			array_shift($segments);
			$vars['userid'] = $userid;

			// if empty, we should display the user's profile
			if (empty($segments))
			{
				$vars['view'] = 'profile';
			}
		}
	}

	$count = count($segments);

	if ( ! isset($selectedMenu))
	{
		if ($count > 0)
		{
			// If there are no menus we try to use the segments
			$vars['view'] = $segments[0];

			if ( ! empty($segments[1]))
			{
				$vars['task'] = $segments[1];
			}

			if ( ! empty($segments[2]) && $segments[1] == 'viewgroup')
			{
				$groupTitle      = $segments[2];
				$vars['groupid'] = _parseGroup( $groupTitle );
			}
		}

		return $vars;
	}

	if ($selectedMenu->query['view'] == 'frontpage')
	{
		// We know this is a frontpage view in the menu, try to get the
		// view from the segments instead.
		if ($count > 0)
		{
			$vars['view'] = $segments[0];

			if ( ! empty($segments[1]))
			{
				$vars['task'] = $segments[1];
			}
		}
	}
	else
	{
		$vars['view'] = $selectedMenu->query['view'];

		if ($count > 0)
		{
			$vars['task'] = $segments[0];
		}
	}


	// In case of video view, the 'task' (video) has been removed during
	// BuildRoute. We need to detect if the segment[0] is actually a
	// permalink to the actual video, and add the proper task
	if ($vars['view'] == 'videos' && (isset($vars['task']) && $vars['task'] != 'myvideos'))
	{
		$pattern    = "'^[0-9]+'s";
		$videoTitle = $segments[count($segments) - 1];

		preg_match($pattern, $videoTitle, $matches);

		if ($matches)
		{
			$vars['task'] = 'video';
		}
	}

	if (isset($vars['userid']) && ! isset($vars['task']))
	{
		switch ($vars['view'])
		{
			case 'photos' :
				$vars['task'] = 'myphotos';
				break;
			case 'groups' :
				$vars['task'] = 'mygroups';
				break;
			case 'events' :
				$vars['task'] = 'myevents';
				break;
			case 'videos' :
				$vars['task'] = 'myvideos';
				break;
		}
	}

	// In case users try to access http://site.com/community/my-xxx.html directly, it should also work
	if (isset($vars['task']) && $vars['task'] == 'my:groups')
	{
		$vars['view'] = 'groups';
		$vars['task'] = 'mygroups';
	}

	if (isset($vars['task']) && $vars['task'] == 'my:videos')
	{
		$vars['view'] = 'videos';
		$vars['task'] = 'myvideos';
	}

	if (isset($vars['view']) && $vars['view'] == 'my:photos')
	{
		$vars['view'] = 'photos';
		$vars['task'] = 'myphotos';
	}

	if (isset($vars['view']) && $vars['view'] == 'my:events')
	{
		$vars['view'] = 'events';
		$vars['task'] = 'myevents';
	}

	// If the task is video then, query the last segment to grab the video id
	if (isset($vars['task']) && $vars['task'] == 'video')
	{
		$videoTitle      = $segments[count($segments) - 1];
		$titles          = explode('-', $videoTitle);
		$vars['videoid'] = $titles[0];
	}

	// If the task is viewgroup then, query the last segment to grab the group id
	if (isset($vars['task']) && $vars['task'] == 'viewgroup')
	{
		$groupTitle      = $segments[count($segments) - 1];
		$vars['groupid'] = _parseGroup($groupTitle);
	}

	// If the task is viewevent then, query the last segment to grab the eventid
	if (isset($vars['task']) && $vars['task'] == 'viewevent')
	{
		$title  = $segments[count($segments) - 1];
		$titles = explode('-' , $title);

		// @rule: Joomla replaces - with : for the first occurence. So we need to replace the first : to -
		if (count($titles) == 1)
		{
			$titles	= explode('-', CString::str_ireplace(':' , '-', $title));
		}

		$vars['eventid'] = $titles[ 0 ];
	}

	// If the task is viewdiscussion then, query the last segment to grab the topic id
	if (isset($vars['task']) && $vars['task'] == 'viewdiscussion')
	{
		$discussionTitle = $segments[count($segments) - 1];
		$titles          = explode('-', $discussionTitle);

		// @rule: Joomla replaces - with : for the first occurence. So we need to replace the first : to -
		if (count($titles) == 1)
		{
			$titles	= explode('-', CString::str_ireplace(':' ,'-' , $discussionTitle));
		}

		$vars['topicid'] = $titles[0];
	}

	// If the task is viewgroup then, query the last segment to grab the group id
	if (isset($vars['task']) && $vars['task'] == 'viewbulletin')
	{
		$bulletinTitle = $segments[count($segments) - 1];
		$titles        = explode('-', $bulletinTitle);

		// @rule: Joomla replaces - with : for the first occurence. So we need to replace the first : to -
		if (count($titles) == 1)
		{
			$titles	= explode('-', CString::str_ireplace(':', '-', $bulletinTitle));
		}

		$vars['bulletinid'] = $titles[0];
	}

	return $vars;
}

function & _parseGroup($title)
{
	$titles  = explode('-', $title);
	$groupId = $titles[0];

	return $groupId;
}

function CommunityGetUserId($alias)
{
	$db    = JFactory::getDBO();
	$query = 'SELECT ' . $db->quoteName('userid').' FROM '.$db->quoteName('#__community_users')
					.' WHERE '.$db->quoteName('alias').'='.$db->Quote( $alias );
	$db->setQuery($query);
	$id = $db->loadResult();

	// The alias not found, could be caused by Joomla rewriting - into :
	// Replace the first : into - and search again
	if (empty($id))
	{
		$pattern     = '/([0-9]*)(:)/i';
		$replacement = '$1-';

		// Replace only the first occurance of : into -
		$alias = preg_replace($pattern, $replacement, $alias, 1);

		$query = 'SELECT '.$db->quoteName('userid')
					.' FROM '.$db->quoteName('#__community_users').' WHERE '.$db->quoteName('alias').'='.$db->Quote( $alias );
		$db->setQuery($query);
		$id = $db->loadResult();
	}

	return $id;
}