<?php
/***********************************************
* File      :   streamimporter.php
* Descr     :   Stream import classes
*
* Original by Zarafa Deutschland GmbH released under GPLv2.
* Modifications by Atmail published under GPLv2
* Consult LICENSE file for details
************************************************/

// We don't support caching changes for messages
class ImportContentsChangesStream {
    var $_encoder;
    var $_type;
    var $_seenObjects;

    function ImportContentsChangesStream(&$encoder, $type) {
        $this->_encoder = &$encoder;
        $this->_type = $type;
        $this->_seenObjects = array();
    }

    function ImportMessageChange($id, $message) {
        if(strtolower(get_class($message)) != $this->_type)
            return true; // ignore other types

        // prevent sending the same object twice in one request
        if (in_array($id, $this->_seenObjects)) {
        	//debugLog("Object $id discarded! Object already sent in this request.");
        	return true;
        }

        $this->_seenObjects[] = $id;

        if ($message->flags === false || $message->flags === SYNC_NEWMESSAGE)
            $this->_encoder->startTag(SYNC_ADD);
        else
            $this->_encoder->startTag(SYNC_MODIFY);

        $this->_encoder->startTag(SYNC_SERVERENTRYID);
        $this->_encoder->content($id);
        $this->_encoder->endTag();
        $this->_encoder->startTag(SYNC_DATA);
        $message->encode($this->_encoder);
        $this->_encoder->endTag();
        $this->_encoder->endTag();

        return true;
    }

    function ImportMessageDeletion($id) {
        $this->_encoder->startTag(SYNC_REMOVE);
        $this->_encoder->startTag(SYNC_SERVERENTRYID);
        $this->_encoder->content($id);
        $this->_encoder->endTag();
        $this->_encoder->endTag();

        return true;
    }

    function ImportMessageReadFlag($id, $flags) {
        if($this->_type != "syncmail")
            return true;
        $this->_encoder->startTag(SYNC_MODIFY);
            $this->_encoder->startTag(SYNC_SERVERENTRYID);
                $this->_encoder->content($id);
            $this->_encoder->endTag();
            $this->_encoder->startTag(SYNC_DATA);
                $this->_encoder->startTag(SYNC_POOMMAIL_READ);
                    $this->_encoder->content($flags);
                $this->_encoder->endTag();
            $this->_encoder->endTag();
        $this->_encoder->endTag();

        return true;
    }

	function ImportFolderDeletion($folderid)
	{
		return false;
	}

    function ImportMessageMove($message)
    {
        return true;
    }
}

class ImportHierarchyChangesStream {

    function ImportHierarchyChangesStream() {
        return true;
    }

    function ImportFolderChange($folder) {
        return true;
    }

    function ImportFolderDeletion($folder) {
        return true;
    }
};

