<?php
/***********************************************
 * File      :   BackendProxy.php
 * Project   :   Z-Push
 * Descr     :   It route calls to three Backends thru one interface.
 *
 * Created   :   04.10.2010 - emerson-faria.nobre@serpro.gov.br
 *
 * � Zarafa Deutschland GmbH, www.zarafaserver.de
 * This file is distributed under GPL v2.
 * Consult LICENSE file for details
 ************************************************/
require_once("diffbackend.php");

class BackendProxy extends BackendDiff {
	var $BackendEmail;
	var $BackendContacts;
	var $BackendCalendar;
	var $folderid;

	function __construct()
	{
		global $BACKEND_EMAIL, $BACKEND_CONTACTS, $BACKEND_CALENDAR;
		if (isset($BACKEND_EMAIL)) $this->BackendEmail = new $BACKEND_EMAIL();
		if (isset($BACKEND_CONTACTS)) $this->BackendContacts = new $BACKEND_CONTACTS();
		if (isset($BACKEND_CALENDAR)) $this->BackendCalendar = new $BACKEND_CALENDAR();
	}

	function Logon($username, $domain, $password) {
		global $BACKEND_EMAIL, $BACKEND_CONTACTS, $BACKEND_CALENDAR;
		if (isset($BACKEND_EMAIL) and (! $this->BackendEmail->Logon($username, $domain, $password))) return false;
		if (isset($BACKEND_CONTACTS) and (! $this->BackendContacts->Logon($username, $domain, $password))) return false;
		if (isset($BACKEND_CALENDAR) and (! $this->BackendCalendar->Logon($username, $domain, $password))) return false;
		return true;
	}

	function Logoff() {
		global $BACKEND_EMAIL;
		if (isset($BACKEND_EMAIL)) return $this->BackendEmail->Logoff();
		else return true;
	}

	function Setup($user, $devid, $protocolversion) {
		debugLog('BackendProxy::Setup('.$user.','.$devid.','.$protocolversion.')');
		global $BACKEND_EMAIL, $BACKEND_CONTACTS, $BACKEND_CALENDAR;
		if (isset($BACKEND_EMAIL)) $this->BackendEmail->Setup($user, $devid, $protocolversion);
		if (isset($BACKEND_CONTACTS)) $this->BackendContacts->Setup($user, $devid, $protocolversion);
		if (isset($BACKEND_CALENDAR)) $this->BackendCalendar->Setup($user, $devid, $protocolversion);
		return true;
	}

	function GetExporter($folderid = false) {
		$this->folderid = $folderid;
		return parent::GetExporter($folderid);
	}

	function SendMail($rfc822, $forward = false, $reply = false, $parent = false) {
		global $BACKEND_EMAIL;
		if (isset($BACKEND_EMAIL)) return $this->BackendEmail->SendMail($rfc822, $forward, $reply, $parent);
		else return false;
	}

	function GetWasteBasket() {
		if (isset($BACKEND_EMAIL)) return $this->BackendEmail->GetWasteBasket();
		else return false;
	}

	function GetMessageList($folderid, $cutoffdate) {
		if ($folderid == 'root') {
			return $this->BackendContacts->GetMessageList($folderid, $cutoffdate);
		} else if ($folderid == 'calendar') {
			return $this->BackendCalendar->GetMessageList($folderid, $cutoffdate);
		} else return $this->BackendEmail->GetMessageList($folderid, $cutoffdate);
	}

	function GetFolderList() {
		global $BACKEND_EMAIL, $BACKEND_CONTACTS, $BACKEND_CALENDAR;
		$folders = Array();
		if (isset($BACKEND_EMAIL)) $folders += $this->BackendEmail->GetFolderList();
		if (isset($BACKEND_CALENDAR)) array_push($folders, $this->BackendCalendar->GetFolderList());
		if (isset($BACKEND_CONTACTS)) array_push($folders, $this->BackendContacts->GetFolderList());
		return $folders;
	}

	function GetFolder($id) {
		if ($id == 'root') {
			return $this->BackendContacts->GetFolder($id);
		} else if ($id == 'calendar') {
			return $this->BackendCalendar->GetFolder($id);
		} else return $this->BackendEmail->GetFolder($id);
	}

	function StatFolder($id) {
		if ($id == 'root') {
			return $this->BackendContacts->StatFolder($id);
		} else if ($id == 'calendar') {
			return $this->BackendCalendar->StatFolder($id);
		} else return $this->BackendEmail->StatFolder($id);
	}

	function GetAttachmentData($attname) {
		list($folderid, $id, $part) = explode(":", $attname);
		if ($folderid == 'root') {
			return $this->BackendContacts->GetAttachmentData($attname);
		} else if ($folderid == 'calendar') {
			return $this->BackendCalendar->GetAttachmentData($attname);
		} else return $this->BackendEmail->GetAttachmentData($attname);
	}

	function StatMessage($folderid, $id) {
		if ($folderid == 'root') {
			return $this->BackendContacts->StatMessage($folderid, $id);
		} else if ($folderid == 'calendar') {
			return $this->BackendCalendar->StatMessage($folderid, $id);
		} else return $this->BackendEmail->StatMessage($folderid, $id);
	}

	function GetMessage($folderid, $id, $truncsize, $mimesupport = 0) {
		if ($folderid == 'root') {
			return $this->BackendContacts->GetMessage($folderid, $id, $truncsize, $mimesupport = 0);
		} else if ($folderid == 'calendar') {
			return $this->BackendCalendar->GetMessage($folderid, $id, $truncsize, $mimesupport = 0);
		} else return $this->BackendEmail->GetMessage($folderid, $id, $truncsize, $mimesupport = 0);
	}

	function DeleteMessage($folderid, $id) {
		if ($folderid == 'root') {
			return $this->BackendContacts->DeleteMessage($folderid, $id);
		} else if ($folderid == 'calendar') {
			return $this->BackendCalendar->DeleteMessage($folderid, $id);
		} else return $this->BackendEmail->DeleteMessage($folderid, $id);
	}

	function SetReadFlag($folderid, $id, $flags) {
		if ($folderid == 'root') {
			return $this->BackendContacts->SetReadFlag($folderid, $id, $flags);
		} else if ($folderid == 'calendar') {
			return $this->BackendCalendar->SetReadFlag($folderid, $id, $flags);
		} else return $this->BackendEmail->SetReadFlag($folderid, $id, $flags);
	}

	function ChangeMessage($folderid, $id, $message) {
		if ($folderid == 'root') {
			return $this->BackendContacts->ChangeMessage($folderid, $id, $message);
		} else if ($folderid == 'calendar') {
			return $this->BackendCalendar->ChangeMessage($folderid, $id, $message);
		} else return $this->BackendEmail->ChangeMessage($folderid, $id, $message);
	}

	function MoveMessage($folderid, $id, $newfolderid) {
		if ($folderid == 'root') {
			return $this->BackendContacts->MoveMessage($folderid, $id, $newfolderid);
		} else if ($folderid == 'calendar') {
			return $this->BackendCalendar->MoveMessage($folderid, $id, $newfolderid);
		} else return $this->BackendEmail->MoveMessage($folderid, $id, $newfolderid);
	}

	function AlterPing() {
		if ($this->folderid == 'root') {
			return false;
		} else if ($this->folderid == 'calendar') {
			return false;
		} else return true;
	}

	function AlterPingChanges($folderid, &$syncstate) {
		if ($folderid == 'root') {
			return $this->BackendContacts->AlterPingChanges($folderid, &$syncstate);
		} else if ($folderid == 'calendar') {
			return $this->BackendCalendar->AlterPingChanges($folderid, &$syncstate);
		} else return $this->BackendEmail->AlterPingChanges($folderid, &$syncstate);
	}
};
?>