<?php
/*+***********************************************************************************
 * The contents of this file are subject to the vtiger CRM Public License Version 1.0
 * ("License"); You may not use this file except in compliance with the License
 * The Original Code is:  vtiger CRM Open Source
 * The Initial Developer of the Original Code is vtiger.
 * Portions created by vtiger are Copyright (C) vtiger.
 * All Rights Reserved.
 *************************************************************************************/

class Users_Record_Model extends Vtiger_Record_Model {

	/**
	 * Gets the value of the key . First it will check whether specified key is a property if not it
	 *  will get from normal data attribure from base class
	 * @param <string> $key - property or key name
	 * @return <object>
	 */
	public function get($key) {
		if(property_exists($this, $key)) {
			return $this->$key;
		}
		return parent::get($key);
	}
    
    /**
     * Sets the value of the key . First it will check whether specified key is a property if not it
     * will set from normal set from base class
     * @param <string> $key - property or key name
     * @param <string> $value
     */
    public function set($key, $value) {
        if(property_exists($this, $key)) {
            $this->$key = $value;
        }
        parent::set($key, $value);
        return $this;
    }

	/**
	 * Function to get the Detail View url for the record
	 * @return <String> - Record Detail View Url
	 */
	public function getDetailViewUrl() {
		$module = $this->getModule();
		return 'index.php?module='.$this->getModuleName().'&parent=Settings&view='.$module->getDetailViewName().'&record='.$this->getId();
	}
	
	/**
	 * Function to get the Detail View url for the Preferences page
	 * @return <String> - Record Detail View Url
	 */
	public function getPreferenceDetailViewUrl() {
		$module = $this->getModule();
		return 'index.php?module='.$this->getModuleName().'&view=PreferenceDetail&record='.$this->getId();
	}
	
	/**
	 * Function to get the url for the Profile page
	 * @return <String> - Profile Url
	 */
	public function getProfileUrl() {
		$module = $this->getModule();
		return 'index.php?module=Users&view=ChangePassword&mode=Profile';
	}
	
	/**
	 * Function to get the Edit View url for the record
	 * @return <String> - Record Edit View Url
	 */
	public function getEditViewUrl() {
		$module = $this->getModule();
		return 'index.php?module='.$this->getModuleName().'&parent=Settings&view='.$module->getEditViewName().'&record='.$this->getId();
	}

	/**
	 * Function to get the Edit View url for the Preferences page
	 * @return <String> - Record Detail View Url
	 */
	public function getPreferenceEditViewUrl() {
		$module = $this->getModule();
		return 'index.php?module='.$this->getModuleName().'&view=PreferenceEdit&record='.$this->getId();
	}

	/**
	 * Function to get the Delete Action url for the record
	 * @return <String> - Record Delete Action Url
	 */
	public function getDeleteUrl() {
		$module = $this->getModule();
		return 'index.php?module='.$this->getModuleName().'&parent=Settings&view='.$module->getDeleteActionName().'User&record='.$this->getId();
	}

	/**
	 * Function to check whether the user is an Admin user
	 * @return <Boolean> true/false
	 */
	public function isAdminUser() {
		$adminStatus = $this->get('is_admin');
		if ($adminStatus == 'on') {
			return true;
		}
		return false;
	}

	/**
	 * Function to get the module name
	 * @return <String> Module Name
	 */
	public function getModuleName() {
		$module = $this->getModule();
		if($module) {
			return parent::getModuleName();
		}
		//get from the class propety module_name
		return $this->get('module_name');
	}

	/**
	 * Function to save the current Record Model
	 */
	public function save() {
		parent::save();

		$this->saveTagCloud();
	}


	/**
	 * Function to get all the Home Page components list
	 * @return <Array> List of the Home Page components
	 */
	public function getHomePageComponents() {
		$entity = $this->getEntity();
		$homePageComponents = $entity->getHomeStuffOrder($this->getId());
		return $homePageComponents;
	}

	/**
	 * Static Function to get the instance of the User Record model for the current user
	 * @return Users_Record_Model instance
	 */
	protected static $currentUserModels = array();
	public static function getCurrentUserModel() {
		//TODO : Remove the global dependency
		$currentUser = vglobal('current_user');
		//crm-now: get SVN Tag
		global $adb;
		if(!empty($currentUser)) {
			if(isset($_SESSION['svn_tag'])){ 
				$svn_tag = $_SESSION['svn_tag'];
			}
			else {
				//crm-now: set SVN Tag version in Users Object
				$query = "SELECT tag_version from vtiger_version";
				$result = $adb->pquery($query, array());
				//remove some content
				$svn_tag = $adb->query_result($result,0,"tag_version");
				$svn_tag = str_replace('/', '', $svn_tag );
				$svn_tag = str_replace('crm-now-', '', $svn_tag );
				$_SESSION['svn_tag'] = $svn_tag;
			}
			
			// Optimization to avoid object creation every-time
			// Caching is per-id as current_user can get swapped at runtime (ex. workflow)
			$currentUserModel = NULL;
			if (isset(self::$currentUserModels[$currentUser->id])) {
				$currentUserModel = self::$currentUserModels[$currentUser->id];
				$currentUserModel->svn_tag = $svn_tag;
			}
			if (!$currentUserModel) {
				$currentUserModel = self::getInstanceFromUserObject($currentUser);
				self::$currentUserModels[$currentUser->id] = $currentUserModel;
			}
			return $currentUserModel;
		}
		return new self();
	}

	/**
	 * Function to return user object from preference file.
	 */
	public static function getInstanceFromPreferenceFile($userId) {
		$focusObj = new Users();
		$focusObj->retrieveCurrentUserInfoFromFile($userId);
		return self::getInstanceFromUserObject($focusObj);
	}

	/**
	 * Static Function to get the instance of the User Record model from the given Users object
	 * @return Users_Record_Model instance
	 */
	public static function getInstanceFromUserObject($userObject) {
		$objectProperties = get_object_vars($userObject);
		$userModel = new self();
		foreach($objectProperties as $properName=>$propertyValue){
			$userModel->$properName = $propertyValue;
		}
		return $userModel->setData($userObject->column_fields)->setModule('Users')->setEntity($userObject);
	}

	/**
	 * Static Function to get the instance of all the User Record models
	 * @return <Array> - List of Users_Record_Model instances
	 */
	public static function getAll($onlyActive=true) {
		$db = PearDatabase::getInstance();

		$sql = 'SELECT id FROM vtiger_users';
		$params = array();
		if($onlyActive) {
			$sql .= ' WHERE status = ?';
			$params[] = 'Active';
		}
		$result = $db->pquery($sql, $params);

		$noOfUsers = $db->num_rows($result);
		$users = array();
		if($noOfUsers > 0) {
			$focus = new Users();
			for($i=0; $i<$noOfUsers; ++$i) {
				$userId = $db->query_result($result, $i, 'id');
				$focus->id = $userId;
				$focus->retrieve_entity_info($userId, 'Users');

				$userModel = self::getInstanceFromUserObject($focus);
				$users[$userModel->getId()] = $userModel;
			}
		}
		return $users;
	}

	/**
	 * Function returns the Subordinate users
	 * @return <Array>
	 */
	function getSubordinateUsers() {
		$privilegesModel = $this->get('privileges');

		if(empty($privilegesModel)) {
			$privilegesModel = Users_Privileges_Model::getInstanceById($this->getId());
			$this->set('privileges', $privilegesModel);
		}

		$subordinateUsers = array();
		$subordinateRoleUsers = $privilegesModel->get('subordinate_roles_users');
		if($subordinateRoleUsers) {
			foreach($subordinateRoleUsers as $role=>$users) {
				foreach($users as $user) {
					$subordinateUsers[$user] = $privilegesModel->get('first_name').' '.$privilegesModel->get('last_name');
				}
			}
		}
		return $subordinateUsers;
	}

	/**
	 * Function returns the Users Parent Role
	 * @return <String>
	 */
	function getParentRoleSequence() {
		$privilegesModel = $this->get('privileges');

		if(empty($privilegesModel)) {
			$privilegesModel = Users_Privileges_Model::getInstanceById($this->getId());
			$this->set('privileges', $privilegesModel);
		}

		return $privilegesModel->get('parent_role_seq');
	}

	/**
	 * Function returns the Users Current Role
	 * @return <String>
	 */
	function getRole() {
		$privilegesModel = $this->get('privileges');

		if(empty($privilegesModel)) {
			$privilegesModel = Users_Privileges_Model::getInstanceById($this->getId());
			$this->set('privileges', $privilegesModel);
		}

		return $privilegesModel->get('roleid');
	}

	/**
	 * Function returns List of Accessible Users for a Module
	 * @param <String> $module
	 * @return <Array of Users_Record_Model>
	 */
	public function getAccessibleUsersForModule($module) {
		$currentUser = Users_Record_Model::getCurrentUserModel();
		$curentUserPrivileges = Users_Privileges_Model::getCurrentUserPrivilegesModel();

		if($currentUser->isAdminUser() || $curentUserPrivileges->hasGlobalWritePermission()) {
			$users = $this->getAccessibleUsers("",$module);
		} else {
			$sharingAccessModel = Settings_SharingAccess_Module_Model::getInstance($module);
			if($sharingAccessModel->isPrivate()) {
				$users = $this->getAccessibleUsers('private',$module);
			} else {
				$users = $this->getAccessibleUsers("",$module);
			}
		}
		return $users;
	}

	/**
	 * Function returns List of Accessible Users for a Module
	 * @param <String> $module
	 * @return <Array of Users_Record_Model>
	 */
	public function getAccessibleGroupForModule($module) {
		$currentUser = Users_Record_Model::getCurrentUserModel();
		$curentUserPrivileges = Users_Privileges_Model::getCurrentUserPrivilegesModel();

		if($currentUser->isAdminUser() || $curentUserPrivileges->hasGlobalWritePermission()) {
			$groups = $this->getAccessibleGroups("",$module);
		} else {
			$sharingAccessModel = Settings_SharingAccess_Module_Model::getInstance($module);
			if($sharingAccessModel->isPrivate()) {
				$groups = $this->getAccessibleGroups('private',$module);
			} else {
				$groups = $this->getAccessibleGroups("",$module);
			}
		}
		return $groups;
	}

	/**
	 * Function to get Images Data
	 * @return <Array> list of Image names and paths
	 */
	public function getImageDetails() {
		$currentUserModel = Users_Record_Model::getCurrentUserModel();
		$db = PearDatabase::getInstance();

		$imageDetails = array();
		$recordId = $this->getId();

		if ($recordId) {
			$query = "SELECT vtiger_attachments.* FROM vtiger_attachments
            LEFT JOIN vtiger_salesmanattachmentsrel ON vtiger_salesmanattachmentsrel.attachmentsid = vtiger_attachments.attachmentsid
            WHERE vtiger_salesmanattachmentsrel.smid=?";

			$result = $db->pquery($query, array($recordId));

			$imageId = $db->query_result($result, 0, 'attachmentsid');
			$imagePath = $db->query_result($result, 0, 'path');
			$imageName = $db->query_result($result, 0, 'name');

			if(!empty($imageName)){
				//decode_html - added to handle UTF-8 characters in file names
				$imageOriginalName = decode_html($imageName);
				//crm-now: added because of restricted access to /storage
				$imgpath = $imagePath.$imageId."_".$imageOriginalName;
				$type = pathinfo($imgpath, PATHINFO_EXTENSION);
				$data = file_get_contents($imgpath);
				$str = "data:image/".$type.";base64,".base64_encode($data);
				$imageDetails[] = array(
						'id' => $imageId,
						'orgname' => $imageOriginalName,
						'path' => $str,
						'name' => $imageOriginalName
				);
			}
		}
		return $imageDetails;
	}


    /**
	 * Function to get all the accessible users
	 * @return <Array>
	 */
	public function getAccessibleUsers($private="",$module = false) {
		$currentUserRoleModel = Settings_Roles_Record_Model::getInstanceById($this->getRole());
		$accessibleUser = Vtiger_Cache::get('vtiger-'.$this->getRole().'-'.$currentUserRoleModel->get('allowassignedrecordsto'), 'accessibleusers');
        if(empty($accessibleUser)) {
			if($currentUserRoleModel->get('allowassignedrecordsto') === '1' || $private == 'Public') {
				$accessibleUser = get_user_array(false, "ACTIVE", "", $private,$module);
			} else if($currentUserRoleModel->get('allowassignedrecordsto') === '2'){
				$accessibleUser = $this->getSameLevelUsersWithSubordinates();
			} else if($currentUserRoleModel->get('allowassignedrecordsto') === '3') {
				$accessibleUser = $this->getRoleBasedSubordinateUsers();
			}
			Vtiger_Cache::set('vtiger-'.$this->getRole().'-'.$currentUserRoleModel->get('allowassignedrecordsto'), 'accessibleusers',$accessibleUser);
		}
		return $accessibleUser;
	}

	/**
	 * Function to get same level and subordinates Users
	 * @return <array> Users
	 */
	public function getSameLevelUsersWithSubordinates(){
		$currentUserRoleModel = Settings_Roles_Record_Model::getInstanceById($this->getRole());
		$sameLevelRoles = $currentUserRoleModel->getSameLevelRoles();
		$sameLevelUsers = $this->getAllUsersOnRoles($sameLevelRoles);
		$subordinateUsers = $this->getRoleBasedSubordinateUsers();
		foreach ($subordinateUsers as $userId => $userName) {
			$sameLevelUsers[$userId] = $userName;
		}
		return $sameLevelUsers;
	}
	
	/**
	 * Function to get subordinates Users
	 * @return <array> Users
	 */
	public function getRoleBasedSubordinateUsers(){
		$currentUserRoleModel = Settings_Roles_Record_Model::getInstanceById($this->getRole());
		$childernRoles = $currentUserRoleModel->getAllChildren();
		$users = $this->getAllUsersOnRoles($childernRoles);
        $currentUserDetail = array($this->getId() => $this->get('first_name').' '.$this->get('last_name'));
        $users = $currentUserDetail + $users;
        return $users;
	}

	/**
	 * Function to get the users based on Roles
	 * @param type $roles
	 * @return <array>
	 */
	public function getAllUsersOnRoles($roles) {
		$db = PearDatabase::getInstance();
		$roleIds = array();
		foreach ($roles as $key => $role) {
			$roleIds[] = $role->getId();
		}
        
        if(empty($roleIds)) {
            return array();
        }
        
		$sql = 'SELECT userid FROM vtiger_user2role WHERE roleid IN ('.  generateQuestionMarks($roleIds).')';
		$result = $db->pquery($sql, $roleIds);
		$noOfUsers = $db->num_rows($result);
		$userIds = array();
		$subUsers = array();
		if($noOfUsers > 0) {
			for($i=0; $i<$noOfUsers; ++$i) {
				$userIds[] = $db->query_result($result, $i, 'userid');
			}
			$query = 'SELECT id, first_name, last_name FROM vtiger_users WHERE status = ? AND id IN ('.  generateQuestionMarks($userIds).')';
			$result = $db->pquery($query, array('ACTIVE', $userIds));
			$noOfUsers = $db->num_rows($result);
			for($j=0; $j<$noOfUsers; ++$j) {
				$userId = $db->query_result($result, $j,'id');
				$firstName = $db->query_result($result, $j, 'first_name');
				$lastName = $db->query_result($result, $j, 'last_name');
				$subUsers[$userId] = $firstName .' '.$lastName;
			}
		}
		return $subUsers;
	}
	
	/**
	 * Function to get all the accessible groups
	 * @return <Array>
	 */
	public function getAccessibleGroups($private="",$module = false) {
		//TODO:Remove dependence on $_REQUEST for the module name in the below API
        $accessibleGroups = Vtiger_Cache::get('vtiger-'.$private, 'accessiblegroups');
        if(!$accessibleGroups){
            $accessibleGroups = get_group_array(false, "ACTIVE", "", $private,$module);
            Vtiger_Cache::set('vtiger-'.$private, 'accessiblegroups',$accessibleGroups);
        }
		return get_group_array(false, "ACTIVE", "", $private);
	}

	/**
	 * Function to get privillage model
	 * @return $privillage model
	 */
	public function getPrivileges() {
		$privilegesModel = $this->get('privileges');

		if (empty($privilegesModel)) {
			$privilegesModel = Users_Privileges_Model::getInstanceById($this->getId());
			$this->set('privileges', $privilegesModel);
		}

		return $privilegesModel;
	}

	/**
	 * Function to get user default activity view
	 * @return <String>
	 */
	public function getActivityView() {
		$activityView = $this->get('activity_view');
		return $activityView;
	}

	/**
	 * Function to delete corresponding image
	 * @param <type> $imageId
	 */
	public function deleteImage($imageId) {
		$db = PearDatabase::getInstance();

		$checkResult = $db->pquery('SELECT smid FROM vtiger_salesmanattachmentsrel WHERE attachmentsid = ?', array($imageId));
		$smId = $db->query_result($checkResult, 0, 'smid');

		if ($this->getId() === $smId) {
			$db->pquery('DELETE FROM vtiger_attachments WHERE attachmentsid = ?', array($imageId));
			$db->pquery('DELETE FROM vtiger_salesmanattachmentsrel WHERE attachmentsid = ?', array($imageId));
			return true;
		}
		return false;
	}


	/**
	 * Function to get the Day Starts picklist values
	 * @param type $name Description
	 */
	public static function getDayStartsPicklistValues($stucturedValues){
		$fieldModel = $stucturedValues['LBL_CALENDAR_SETTINGS'];
		$hour_format = $fieldModel['hour_format']->getPicklistValues();
		$start_hour = $fieldModel['start_hour']->getPicklistValues();

		$defaultValues = array('00:00'=>'12:00 AM','01:00'=>'01:00 AM','02:00'=>'02:00 AM','03:00'=>'03:00 AM','04:00'=>'04:00 AM','05:00'=>'05:00 AM',
					'06:00'=>'06:00 AM','07:00'=>'07:00 AM','08:00'=>'08:00 AM','09:00'=>'09:00 AM','10:00'=>'10:00 AM','11:00'=>'11:00 AM','12:00'=>'12:00 PM',
					'13:00'=>'01:00 PM','14:00'=>'02:00 PM','15:00'=>'03:00 PM','16:00'=>'04:00 PM','17:00'=>'05:00 PM','18:00'=>'06:00 PM','19:00'=>'07:00 PM',
					'20:00'=>'08:00 PM','21:00'=>'09:00 PM','22:00'=>'10:00 PM','23:00'=>'11:00 PM');

		$picklistDependencyData = array();
		foreach ($hour_format as $value) {
			if($value == 24){
				$picklistDependencyData['hour_format'][$value]['start_hour'] = $start_hour;
			}else{
				$picklistDependencyData['hour_format'][$value]['start_hour'] = $defaultValues;
			}
		}
		if(empty($picklistDependencyData['hour_format']['__DEFAULT__']['start_hour'])) {
			$picklistDependencyData['hour_format']['__DEFAULT__']['start_hour'] = $defaultValues;
		}
		return $picklistDependencyData;
	}

	/**
	 * Function returns if tag cloud is enabled or not
	 */
	function getTagCloudStatus() {
		$db = PearDatabase::getInstance();
		$query = "SELECT visible FROM vtiger_homestuff WHERE userid=? AND stufftype='Tag Cloud'";
        $res = $db->pquery($query, array($this->getId()));
		$visibility = $db->query_result($res, 0, 'visible');
		if($visibility == 0) {
			return true;
		} 
		return false; 
	}

	/**
	 * Function saves tag cloud
	 */
	function saveTagCloud() {
		$db = PearDatabase::getInstance();
		$db->pquery("UPDATE vtiger_homestuff SET visible = ? WHERE userid=? AND stufftype='Tag Cloud'",
				array($this->get('tagcloud'), $this->getId()));
	}

	/**
	 * Function to get user groups
	 * @param type $userId
	 * @return <array> - groupId's
	 */
	public static function getUserGroups($userId){
		$db = PearDatabase::getInstance();
		$groupIds = array();
		$query = "SELECT groupid FROM vtiger_users2group WHERE userid=?";
		$result = $db->pquery($query, array($userId));
		for($i=0; $i<$db->num_rows($result); $i++){
			$groupId = $db->query_result($result, $i, 'groupid');
			$groupIds[] = $groupId;
		}
		return $groupIds;
	}

	/**
	 * Function returns the users activity reminder in seconds
	 * @return string
	 */
	/**
	 * Function returns the users activity reminder in seconds
	 * @return string
	 */
	function getCurrentUserActivityReminderInSeconds() {
		if (isset ( $this->reminder_interval)) {
			$activityReminder = $this->reminder_interval;
			$activityReminderInSeconds = '';
			if($activityReminder != 'None') {
				preg_match('/([0-9]+)[\s]([a-zA-Z]+)/', $activityReminder, $matches);
				if($matches) {
					$number = $matches[1];
					$string = $matches[2];
					if($string) {
						switch($string) {
							case 'Minute':
							case 'Minutes': $activityReminderInSeconds = $number * 60;			break;
							case 'Hour'   : $activityReminderInSeconds = $number * 60 * 60;		break;
							case 'Day'    : $activityReminderInSeconds = $number * 60 * 60 * 24;break;
							default : $activityReminderInSeconds = '';
						}
					}
				}
			}
			return $activityReminderInSeconds;
		}
		else {
			return '';
		}
	}	
    
    /**
     * Function to get the users count
     * @param <Boolean> $onlyActive - If true it returns count of only acive users else only inactive users
     * @return <Integer> number of users
     */
    public static function getCount($onlyActive = false) {
        $db = PearDatabase::getInstance();
        $query = 'SELECT 1 FROM vtiger_users ';
        $params = array();
        
        if($onlyActive) {
            $query.= ' WHERE status=? ';
            array_push($params,'active');
        }

        $result = $db->pquery($query,$params);
        
        $numOfUsers = $db->num_rows($result);
        return $numOfUsers;
    }
	
    /**
     * Function to get the inactive users count
     * @param <Boolean> $onlyActive - If true it returns count of only acive users else only inactive users
     * @return <Integer> number of users
     */
    public static function getInactiveCount() {
        $db = PearDatabase::getInstance();
        $query = 'SELECT 1 FROM vtiger_users WHERE status != ?';
        $params = array('active');

        $result = $db->pquery($query,$params);
        
        $numOfUsers = $db->num_rows($result);
 		if (empty($numOfUsers)) {
			$numOfUsers = 0;
		}
       return $numOfUsers;
    }
	
	/**
	 * Funtion to get Duplicate Record Url
	 * @return <String>
	 */
	public function getDuplicateRecordUrl() {
		$module = $this->getModule();
		return 'index.php?module='.$this->getModuleName().'&parent=Settings&view='.$module->getEditViewName().'&record='.$this->getId().'&isDuplicate=true';

	}
	
	/**
	 * Function to get instance of user model by name
	 * @param <String> $userName
	 * @return <Users_Record_Model>
	 */
	public static function getInstanceByName($userName) {
		$db = PearDatabase::getInstance();
		$result = $db->pquery('SELECT id FROM vtiger_users WHERE user_name = ?', array($userName));

		if ($db->num_rows($result)) {
			return Users_Record_Model::getInstanceById($db->query_result($result, 0, 'id'), 'Users');
		}
		return false;
	}
	
	/**
	 * Function to delete the current Record Model
	 */
	public function delete() {
		$this->getModule()->deleteRecord($this);
	}
	
    public function isAccountOwner() {
		$db = PearDatabase::getInstance();
		$query = 'SELECT is_owner FROM vtiger_users WHERE id = ?';
		$res = $db->pquery($query, array($this->getId()));
		$isOwner = $db->query_result($res, 0, 'is_owner');
		if($isOwner == 1) {
			return true;
		} 
		return false;
	}
	
	public function getActiveAdminUsers() {
		$db = PearDatabase::getInstance();

		$sql = 'SELECT id FROM vtiger_users WHERE status=? AND is_admin=?';
		$result = $db->pquery($sql, array('ACTIVE', 'on'));

		$noOfUsers = $db->num_rows($result);
		$users = array();
		if($noOfUsers > 0) {
			$focus = new Users();
			for($i=0; $i<$noOfUsers; ++$i) {
				$userId = $db->query_result($result, $i, 'id');
				$focus->id = $userId;
				$focus->retrieve_entity_info($userId, 'Users');

				$userModel = self::getInstanceFromUserObject($focus);
				$users[$userModel->getId()] = $userModel;
			}
		}
		return $users;
	}
	
	public function isFirstTimeLogin($userId) {
		$db = PearDatabase::getInstance();

		$query = 'SELECT 1 FROM vtiger_crmsetup WHERE userid = ? and setup_status = ?';
		$result = $db->pquery($query, array($userId, 1));
		if($db->num_rows($result) == 0){
			return true;
		}
		return false;
    }
	
	/**
	 * Function to get the user hash
	 * @param type $userId
	 * @return boolean
	 */
	public function getUserHash() {
		$db = PearDatabase::getInstance();
		$query = 'SELECT user_hash FROM vtiger_users WHERE id = ?';
		$result = $db->pquery($query, array($this->getId()));
		if($db->num_rows($result) > 0){
			return $db->query_result($result, 0, 'user_hash');
			
		}
    }
        
    /*
     * Function to delete user permanemtly from CRM and
     * assign all record which are assigned to that user
     * and not transfered to other user to other user
     * 
     * @param User Ids of user to be deleted and user
     * to whom records should be assigned
     */
    public static function deleteUserPermanently($userId, $newOwnerId) {
        //crm-now: prevent deletion of admin user
        if ($userId == 1) return;
        
        $db = PearDatabase::getInstance();
        
        $sql = "UPDATE vtiger_crmentity SET smcreatorid=?,smownerid=? WHERE smcreatorid=? AND setype=?";
        $db->pquery($sql, array($newOwnerId, $newOwnerId, $userId,'ModComments'));
        
        //update history details in vtiger_modtracker_basic 
        $sql ="update vtiger_modtracker_basic set whodid=? where whodid=?"; 
        $db->pquery($sql, array($newOwnerId, $userId)); 

        //update comments details in vtiger_modcomments 
        $sql ="update vtiger_modcomments set userid=? where userid=?"; 
        $db->pquery($sql, array($newOwnerId, $userId));

        $sql = "DELETE FROM vtiger_users WHERE id=?";
        $db->pquery($sql, array($userId));
    }
	
	/**
	 * Function to get the Display Name for the record
	 * @return <String> - Entity Display Name for the record
	 */
	public function getDisplayName() {
		return getFullNameFromArray($this->getModuleName(),$this->getData());
	}
}
