<?php
/**
 * [PHPFOX_HEADER]
 */

defined('PHPFOX') or exit('NO DICE!');

/**
 * 
 * 
 * @copyright		[PHPFOX_COPYRIGHT]
 * @author  		Raymond Benc
 * @package  		Module_User
 * @version 		$Id: browse.class.php 7167 2014-03-03 18:29:30Z Fern $
 */
class User_Service_Browse extends Phpfox_Service
{
	private $_aConditions = array();
	
	private $_sSort = 'u.joined DESC';
	
	private $_iPage = 0;
	
	private $_iLimit = 9;	
	
	private $_bIsOnline = false;
	
	private $_bExtend = false;
	
	private $_aCallback = false;

	/**
	 * boolean show featured or non featured | null: show all
	 * @var mixed
	 */
	private $_mFeatured = null;
	/**
	 * Tells if admin is looking for users pending email verification
	 * @var bool 
	 */
	private $_bPendingVerify = null;
	
	private $_aCustom = false;
	
	private $_bIsGender = false;
	
	private $_sIp = null;
	
	public function __construct()
	{
		$this->_sTable = Phpfox::getT('user');
	}
	
	public function conditions($aConditions)
	{
		$this->_aConditions = $aConditions;
		
		return $this;
	}	
	
	public function callback($aCallback)
	{
		$this->_aCallback = $aCallback;
		
		return $this;
	}
	
	public function sort($sSort)
	{
		$this->_sSort = $sSort;
		
		if ($this->_sSort == 'u.last_login ASC')
		{
			$this->_aConditions[] = 'AND u.last_login > 0';	
		}
		
		return $this;
	}
	
	public function page($iPage)
	{
		$this->_iPage = $iPage;
		
		return $this;
	}	

	public function pending($bPending)
	{
		$this->_bPendingVerify = (bool)$bPending;
		return $this;
	}
	
	public function featured($bFeatured)
	{
		$this->_mFeatured = $bFeatured;
		
		return $this;
	}
	
	public function limit($iLimit)
	{
		$this->_iLimit = $iLimit;
		
		return $this;
	}	

	public function online($bIsOnline)
	{
		$this->_bIsOnline = $bIsOnline;
		
		return $this;
	}	

	public function extend($bExtend)
	{
		$this->_bExtend = $bExtend;
		
		return $this;
	}
	
	public function custom($mCustom)
	{
		$this->_aCustom = $mCustom;
		
		return $this;
	}
	
	public function gender($bGender)
	{
		$this->_bIsGender = $bGender;
		
		return $this;
	}
	
	public function ip($sIp)
	{
		$this->_sIp = '%' . str_replace('&#42;', '', $sIp) . '%';
	}
	
    /**
     * This function returns user_ids for those that match the search by custom fields
     * if the param $bIsCount is true then it only returns the count and not the user_ids
     * @param bool $bIsCount
     */
    public function getCustom($bIsCount = true, $iCount = false, $bAddCondition = true)
    {
		if ($bIsCount)
		{
			$aUsers = $this->getCustom(false, false, false);			
			return count($aUsers);
		}
        $sSelect = 'u.user_id';
        if ($bIsCount == true)
        {
            $sSelect = ('count(u.user_id)');
        }
        
		if (is_array($this->_aCustom) && !empty($this->_aCustom))
		{
			$sCondition = ' AND (';
			// When searching for more than one custom field searchFields will 
			// return more than one join instruction
			$aAlias = array();
			$aCustomSearch = Custom_Service_Custom::instance()->searchFields($this->_aCustom);
            
			$iCustomCnt = 0;
			
			$iJoinsCount = 0;
			$aUserIds = array();
			if (count($aCustomSearch) > 0)
			{			
				$this->database()->select($sSelect . ($bIsCount ? ' as total' : ''))->from(Phpfox::getT('user'), 'u');
			}
			$aAvoidDups = array();
			
			foreach($aCustomSearch as $iKey => $aSearch)
			{
				if (isset($aAvoidDups[$aSearch['on'] . $aSearch['where']])) 
				{
					unset($aCustomSearch[$iKey]);
					continue;
				}
				
				$aAvoidDups[$aSearch['on'] . $aSearch['where']] = $iKey;
			}
			
			foreach ($aCustomSearch as $iKey => $aSearchParam)
			{
				$iCustomCnt++;
                if ($iCount !== false && is_numeric($iCount) && $iCount > 0)
                {
                    $this->database()->order($this->_sSort)
                        ->limit($this->_iPage, $this->_iLimit, $iCount);
                }
				if (is_array($aSearchParam))
				{
					// The following replacements make sure that the joins are unique by using unique aliases
					$sOldAlias = $aSearchParam['alias'];
					
					$aSearchParam['alias'] = $sNewAlias = $aSearchParam['alias'] . $iCustomCnt;
					
					$sNewOn = $aSearchParam['on'] = $aCustomSearch[$iKey]['on'] = str_replace($sOldAlias .'.', $sNewAlias .'.', $aSearchParam['on']);

					$aCustomSearch[$iKey]['where'] = str_replace(array('mvc.', $sOldAlias .'.'), $sNewAlias .'.', $aSearchParam['where']);
					
					$sNewWhere = $aCustomSearch[$iKey]['where'];
					
					$sOn = ''.$sNewOn . ' AND ' . $sNewWhere;
					
					$this->database()->join($aSearchParam['table'], $sNewAlias, $sOn);
					$iJoinsCount++;					
					
				} // end of is_array aSearchParam
				else
				{
					$this->database()->join(Phpfox::getT('user_custom'), 'ucv', $aSearchParam);
					$iJoinsCount++;	
					$sCondition .= ' '.$aSearchParam . ' AND ';					
				}

				if ( $iJoinsCount > 2 && !$bIsCount)
				{
					$aUsers = $this->database()->execute('getSlaveRows');
					
					if (empty($aUsers) || (isset($aUsers[0]['total']) && $aUsers[0]['total'] <= 1))
					{
						$aUserIds[0] = 0;
					}
					else
					{
						foreach ($aUsers as $aUser)
						{
							$aUserIds[$aUser['user_id']] = $aUser['user_id'];
						}					
					}
					
					$this->database()->select($sSelect)->from(Phpfox::getT('user'), 'u')->where('u.user_id IN (' . implode(',',$aUserIds) .')');						
					$iJoinsCount = 0;
				}
			} // foreach
            if ($bIsCount == true)
            {
                $aCount = $this->database()->execute('getSlaveRows');
                $aCount = array_pop($aCount);

				return (count($aCustomSearch) ? $aCount['total'] : $aCount[$sSelect]);
            }
			if ($iJoinsCount > 0)
			{				
				$aUsers = $this->database()->execute('getSlaveRows');
                
				foreach ($aUsers as $aUser)
				{
					$aUserIds[$aUser['user_id']] = $aUser['user_id'];
				}				
			}
			if (count($aUserIds))
			{
				$sCondition = 'AND (u.user_id IN (' . implode(',', $aUserIds) .')';
			}
			else if (($iJoinsCount > 0) && (empty($aUsers)))
			{
				$sCondition = 'AND (1=2';
			}
			$this->database()->clean();
			
			if ($sCondition != ' AND (' && $bAddCondition)
			{
				$this->_aConditions[] = rtrim($sCondition, ' AND ') . ')';
			}
            
		}
		if ($bAddCondition != true && isset($aUsers))
		{
			return $aUsers;
		}
        return false;
    }
    
	
	public function get()
	{
		$aReturnUsers = array();
		$aUsers = array();
        if ($sPlugin = Phpfox_Plugin::get('user.service_browse_get__start')){return eval($sPlugin);}
		if (!defined('PHPFOX_IS_ADMIN_SEARCH'))
		{
			// user groups that should be hidden
			$aHiddenFromBrowse = User_Service_Group_Setting_Setting::instance()->getUserGroupsBySetting('user.hide_from_browse');
		}
		
		if (($sPlugin = Phpfox_Plugin::get('user.service_browse_get__start_no_return')))
		{
			eval($sPlugin);		
		}
		
        // If there are custom fields to look for we need to know how many users satisfy this criteria
		$iCount = $this->getCustom(true);
        
        if ($iCount !== false && $iCount < 1)
        {
            $bNoMatches = true;
        }
		else
        {
            $aUsers = $this->getCustom(false);
			
			if ($aUsers !== false)
			{
				foreach ($this->_aConditions as $iKey => $sCondition)
				{
					if (preg_match('/u.user_id IN (\([0-9]+\))/', $sCondition, $aMatch) > 0)
					{
						$this->_aConditions[$iKey] = str_replace($aMatch[1], '(' . implode(',', $aUsers) . ')', $sCondition);
					}
				}
			}
			
        }
		
		if (!isset($bNoMatches))
		{
			if ($this->_bIsOnline === true)
			{
				$iActiveSession = PHPFOX_TIME - (Phpfox::getParam('log.active_session') * 60);
				$this->database()->select('COUNT(DISTINCT u.user_id)')->join((Phpfox::getParam('core.store_only_users_in_session') ? Phpfox::getT('session') : Phpfox::getT('log_session')), 'ls', 'ls.user_id = u.user_id AND ls.last_activity > ' . $iActiveSession . (!defined('PHPFOX_IS_ADMIN_SEARCH') ? (!Phpfox::getParam('core.store_only_users_in_session') ? ' AND ls.im_hide = 0' : '') : '') . '');
			}			
			else 
			{
				if ($this->_sIp !== null)
				{
					$this->database()->select('COUNT(DISTINCT u.user_id)');
				}
				else 
				{
					$this->database()->select('COUNT(*)');
				}
			}
			
			if ($iCount > 0)
			{
				$this->database()->leftJoin(Phpfox::getT('user_custom'), 'ucv', 'ucv.user_id = u.user_id');
			}

			// one page to display all, one page to display only featured.		
			if ($this->_mFeatured === true)
			{
				// The purpose of this if is to filter users out, but instead of Joining we can get those users from the cache
				if (Phpfox::getParam('user.cache_featured_users'))
				{
					$sCacheId = $this->cache()->set('featured_users');
					if ( ($aCache = $this->cache()->get($sCacheId)) && is_array($aCache))
					{
						$aFeatured = array();
						foreach ($aCache as $aCachedUser)
						{
							$aFeatured[] = $aCachedUser['user_id'];
						}
						if (!empty($aFeatured))
						{
							$this->_aConditions[] = 'AND u.user_id IN (' . implode(',', $aFeatured) . ')';
						}
					}
				}
				else
				{
					$this->database()->join(Phpfox::getT('user_featured'), 'uf', 'uf.user_id = u.user_id');
				}
			}
			
			if ($this->_aCallback !== false && isset($this->_aCallback['query']))
			{
				Phpfox::callback($this->_aCallback['module'] . '.getBrowseQueryCnt', $this->_aCallback);
			}		
			
			if ($this->_sIp !== null)
			{
				$this->database()->join(Phpfox::getT('user_ip'), 'uip', 'uip.user_id = u.user_id AND uip.ip_address LIKE \'' . $this->database()->escape($this->_sIp) . '\'');
			}

			if (!defined('PHPFOX_IS_ADMIN_SEARCH') && isset($aHiddenFromBrowse) && is_array($aHiddenFromBrowse) && !empty($aHiddenFromBrowse))
			{
				// skip users in these user groups that are invisible
				foreach ($aHiddenFromBrowse as $iGroupId => $aGroup)
				{
					$this->_aConditions[] = 'AND (u.user_group_id != ' . $iGroupId . ' OR u.is_invisible != 1)';
				}
			}
			
			if ($sPlugin = Phpfox_Plugin::get('user.service_browse_get_1')){eval($sPlugin);}
			
			$iCnt = $this->database()->from($this->_sTable, 'u')
				->join(Phpfox::getT('user_field'), 'ufield', 'ufield.user_id = u.user_id')
                ->forceIndex('status_id')
				->where($this->_aConditions)
				->execute('getSlaveField');
		}
		else
		{
			$iCnt = 0;
		}
		
		if ($iCnt > 0)
		{
			if ($sPlugin = Phpfox_Plugin::get('user.service_browse_get__cnt')){eval($sPlugin);}
			$aAlias = array();
			$iCustomCnt = 0;
			
			if ($iCount > 0)
			{
				$this->database()->leftJoin(Phpfox::getT('user_custom'), 'ucv', 'ucv.user_id = u.user_id');
			}			
			
			if ($this->_bIsOnline === true)
			{
				$this->database()->join((Phpfox::getParam('core.store_only_users_in_session') ? Phpfox::getT('session') : Phpfox::getT('log_session')), 'ls', 'ls.user_id = u.user_id AND ls.last_activity > ' . $iActiveSession . (!defined('PHPFOX_IS_ADMIN_SEARCH') ? (Phpfox::getParam('core.store_only_users_in_session') ? '' : ' AND ls.im_hide = 0') : '') . '')->group('u.user_id');
			}	
			
			if ($this->_aCallback !== false && isset($this->_aCallback['query']))
			{
				Phpfox::callback($this->_aCallback['module'] . '.getBrowseQuery', $this->_aCallback);
			}
			
			if (defined('PHPFOX_IS_ADMIN_SEARCH'))
			{
				$this->database()->select('ug.title AS user_group_title, ')->leftJoin(Phpfox::getT('user_group'), 'ug', 'ug.user_group_id = u.user_group_id');
			}
			
			// display the Unfeature/Feature option when landing on the Search page.
			// using bIsOnline as its not defined in the admincp but it is on the user browse page
			if ($this->_mFeatured !== true || (Phpfox::getUserParam('user.can_feature') && $this->_bIsOnline)) 
			{
				$this->database()
					->select('uf.user_id as is_featured, uf.ordering as featured_order, ')
					->leftJoin(Phpfox::getT('user_featured'), 'uf', 'uf.user_id = u.user_id');
			}

			// Users cannot send Friend Requests if they have been blocked by the target user
			if (!defined('PHPFOX_IS_ADMIN_SEARCH') && Phpfox::isModule('friend'))
			{
				$this->database()->select('ub.block_id as user_is_blocked, ')
					->leftJoin(Phpfox::getT('user_blocked'), 'ub', 'ub.user_id = u.user_id AND block_user_id = ' . Phpfox::getUserId());
			}
			
			// display the Unfeature/Feature option when landing on the Search page.
			if ($this->_mFeatured === true && !$this->_bIsOnline)
			{
				$this->database()
					->select('uf.user_id as is_featured, uf.ordering as featured_order, ')
					->join(Phpfox::getT('user_featured'), 'uf', 'uf.user_id = u.user_id');					
			}
			
			if (!defined('PHPFOX_IS_ADMIN_SEARCH') && Phpfox::isUser() && Phpfox::isModule('friend'))
			{
				$this->database()->select('friend.friend_id AS is_friend, ')
					->leftJoin(Phpfox::getT('friend'), 'friend', 'friend.user_id = u.user_id AND friend.friend_user_id = ' . Phpfox::getUserId());
				
				$this->database()->select('frequest.request_id AS is_friend_request, ')
					->leftJoin(Phpfox::getT('friend_request'), 'frequest', 'frequest.user_id = u.user_id AND frequest.friend_user_id = ' . Phpfox::getUserId());				
			}		

			if ($this->_sIp !== null)
			{
				$this->database()->join(Phpfox::getT('user_ip'), 'uip', 'uip.user_id = u.user_id AND uip.ip_address LIKE \'' . $this->database()->escape($this->_sIp) . '\'');
			}
				
			$aReturnUsers = $this->database()->select('u.status_id as unverified, ' . ($this->_bExtend ? 'u.*, ufield.*' : Phpfox::getUserField()))
				->from($this->_sTable, 'u')
				->join(Phpfox::getT('user_field'), 'ufield', 'ufield.user_id = u.user_id')
				->where($this->_aConditions)
                ->group('u.user_id', true)
				->order($this->_sSort)
				->limit($this->_iPage, $this->_iLimit, $iCnt)
				->execute('getSlaveRows');
            
				
			if (Phpfox::isModule('friend'))
			{
				foreach ($aReturnUsers as $iKey => $aUser)
				{
					$aReturnUsers[$iKey]['mutual_friends'] = (Phpfox::getUserId() == $aUser['user_id'] ? 0 : $this->database()->select('COUNT(*)')
						->from(Phpfox::getT('friend'), 'f')
						->innerJoin('(SELECT friend_user_id FROM ' . Phpfox::getT('friend') . ' WHERE is_page = 0 AND user_id = ' . $aUser['user_id'] . ')', 'sf', 'sf.friend_user_id = f.friend_user_id')
						->where('f.user_id = ' . Phpfox::getUserId())
						->execute('getSlaveField'));				
				}
			}
				
			if ($this->_bExtend)
			{
				foreach ($aReturnUsers as $iKey => $aUser)
				{
					if (empty($aUser['dob_setting']))
					{
						switch (Phpfox::getParam('user.default_privacy_brithdate'))
						{
							case 'month_day':
								$aReturnUsers[$iKey]['dob_setting'] =  '1';
								break;
							case 'show_age':
								$aReturnUsers[$iKey]['dob_setting'] =  '2';
								break;
							case 'hide':
								$aReturnUsers[$iKey]['dob_setting'] =  '3';
								break;
						}
					}

					$aBirthDay = User_Service_User::instance()->getAgeArray($aUser['birthday']);
					
					$aReturnUsers[$iKey]['month'] = Phpfox::getLib('date')->getMonth($aBirthDay['month']);
					$aReturnUsers[$iKey]['day'] = $aBirthDay['day'];
					$aReturnUsers[$iKey]['year'] = $aBirthDay['year'];
					if (isset($aUser['last_ip_address']))
					{
						$aReturnUsers[$iKey]['last_ip_address_search'] = str_replace('.', '-', $aUser['last_ip_address']);
					}
				}
			}
		}
				
		if ($sPlugin = Phpfox_Plugin::get('user.service_browse_get__end')){eval($sPlugin);}
		
		return array($iCnt, $aReturnUsers);
	}
	
	/**
	 * If a call is made to an unknown method attempt to connect
	 * it to a specific plug-in with the same name thus allowing 
	 * plug-in developers the ability to extend classes.
	 *
	 * @param string $sMethod is the name of the method
	 * @param array $aArguments is the array of arguments of being passed
	 */
	public function __call($sMethod, $aArguments)
	{
		/**
		 * Check if such a plug-in exists and if it does call it.
		 */
		if ($sPlugin = Phpfox_Plugin::get('user.service_browse__call'))
		{
			eval($sPlugin);
            return null;
		}
			
		/**
		 * No method or plug-in found we must throw a error.
		 */
		Phpfox_Error::trigger('Call to undefined method ' . __CLASS__ . '::' . $sMethod . '()', E_USER_ERROR);
	}	
}