<?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.
 *************************************************************************************/
require_once 'modules/WSAPP/synclib/models/SyncStateModel.php';
require_once 'modules/WSAPP/synclib/models/VtigerModel.php';
require_once 'modules/WSAPP/synclib/models/TargetModel.php';

require_once 'modules/WSAPP/synclib/connectors/VtigerConnector.php';

require_once 'include/database/PearDatabase.php';

require_once 'modules/WSAPP/api/ws/Register.php';
require_once 'modules/WSAPP/WSAPPLogs.php';

abstract class WSAPP_SynchronizeController {
	
	const WSAPP_SYNCHRONIZECONTROLLER_USER_SYNCTYPE = 'user';
	const WSAPP_SYNCHRONIZECONTROLLER_APP_SYNCTYPE = 'app';
    const WSAPP_SYNCHRONIZECONTROLLER_USERANDGROUP_SYNCTYPE = 'userandgroup';

	const WSAPP_SYNCHRONIZECONTROLLER_PULL_EVENT = 'pull';
	const WSAPP_SYNCHRONIZECONTROLLER_PUSH_EVENT = 'push';
	
	public $user;


	abstract function getTargetConnector();
	abstract function getSourceType();

	abstract function getSyncType();

	function __construct($user) {
        $this->user = $user;
		$this->targetConnector = $this->getTargetConnector();
		$this->sourceConnector = $this->getSourceConnector();
		$this->db = PearDatabase::getInstance();
	}
	
	function getSourceConnector() {
		$connector =  new WSAPP_VtigerConnector();
		$connector->setSynchronizeController($this);
		$targetName = $this->targetConnector->getName();
		if(empty ($targetName)){
			throw new Exception('Target Name cannot be empty');
		}
		return $connector->setName('Vtiger_'.$targetName);
	}

	function getTargetRecordModel($data) {
		return new WSAPP_TargetModel($data);
	}

	function getSourceRecordModel($data) {
		return new WSAPP_VtigerModel($data);
	}

	function getSyncStateModel($connector) {
		return $connector->getSyncState($this->getSourceType())->setType($this->getSourceType());
	}

	function updateSyncStateModel($connector,WSAPP_SyncStateModel $syncStateModel){
		return $connector->updateSyncState($syncStateModel);
	}
	
	public function synchronizePull() {
		$synchronizedRecords = array();
		$sourceType = $this->getSourceType();

		$this->sourceConnector->preEvent(self::WSAPP_SYNCHRONIZECONTROLLER_PULL_EVENT);
		$this->targetConnector->preEvent(self::WSAPP_SYNCHRONIZECONTROLLER_PUSH_EVENT);
		
		$syncStateModel = $this->getSyncStateModel($this->sourceConnector);
		$sourceRecords = $this->sourceConnector->pull($syncStateModel, $this->user);
		foreach($sourceRecords as $record){
			$record->setSyncIdentificationKey(uniqid());
		}
		$transformedRecords = $this->targetConnector->transformToTargetRecord($sourceRecords, $this->user);
		$targetRecords = $this->targetConnector->push($transformedRecords, $this->user);
		$targetSyncStateModel = $this->getSyncStateModel($this->targetConnector);
        foreach($sourceRecords as $sourceRecord){
			$sourceId = $sourceRecord->getId();
			foreach($targetRecords as $targetRecord){
				if($sourceRecord->getSyncIdentificationKey() == $targetRecord->getSyncIdentificationKey()){
					$sychronizeRecord = array();
					$sychronizeRecord['source'] = $sourceRecord;
					$sychronizeRecord['target'] = $targetRecord;
					$synchronizedRecords[] = $sychronizeRecord;
					break;
				}
                
			}
		}
        
		$this->sourceConnector->postEvent(self::WSAPP_SYNCHRONIZECONTROLLER_PULL_EVENT, $synchronizedRecords, $syncStateModel);
		$this->targetConnector->postEvent(self::WSAPP_SYNCHRONIZECONTROLLER_PUSH_EVENT, $synchronizedRecords, $targetSyncStateModel);
        
        return $synchronizedRecords;
	}

	function synchronizePush(){
		$synchronizedRecords = array();
		$sourceType = $this->getSourceType();

        $this->sourceConnector->preEvent(self::WSAPP_SYNCHRONIZECONTROLLER_PUSH_EVENT);
		$this->targetConnector->preEvent(self::WSAPP_SYNCHRONIZECONTROLLER_PULL_EVENT);
		
		$syncStateModel = $this->getSyncStateModel($this->targetConnector);
		$targetRecords = $this->targetConnector->pull($syncStateModel, $this->user);
		foreach($targetRecords as $record){
			$record->setSyncIdentificationKey(uniqid());
		}
		
		$transformedRecords = $this->targetConnector->transformToSourceRecord($targetRecords, $this->user);
		
		$sourceSyncStateModel = $this->getSyncStateModel($this->sourceConnector);
		$sourceRecords = $this->sourceConnector->push($transformedRecords, $sourceSyncStateModel);
	
		foreach ($targetRecords as $targetRecord) {
			$targetId = $targetRecord->getId();
			foreach ($sourceRecords as $sourceRecord) {
				if ($sourceRecord->getSyncIdentificationKey() == $targetRecord->getSyncIdentificationKey()) {
					$sychronizeRecord = array();
					$sychronizeRecord['source'] = $sourceRecord;
					$sychronizeRecord['target'] = $targetRecord;
					$synchronizedRecords[] = $sychronizeRecord;
					break;
                }
               
			}
		}
        
		$this->targetConnector->postEvent(self::WSAPP_SYNCHRONIZECONTROLLER_PULL_EVENT, $synchronizedRecords, $syncStateModel);
		$this->sourceConnector->postEvent(self::WSAPP_SYNCHRONIZECONTROLLER_PUSH_EVENT, $synchronizedRecords, $sourceSyncStateModel);
		$this->updateSyncStateModel($this->sourceConnector, $sourceSyncStateModel);
		return $synchronizedRecords;
		
	}

	public function synchronize($pullTargetFirst = true, $push = true, $pull = true) {
		$records = array();
        $currentTime = date('y-m-d H:i:s');
        $user = Users_Record_model::getCurrentUserModel();
        $records['synctime'] = $currentTime;
        $records['Extension'] = explode('_',get_class($this));
        $records['ExtensionModule'] = $this->getSourceType();
        $records['user'] = $user->id;
        
		if ($pullTargetFirst) {
			if($push) $records['push'] = $this->synchronizePush();
			if($pull) $records['pull'] = $this->synchronizePull();
		} else {
			if($pull) $records['pull'] = $this->synchronizePull();
			if($push) $records['push'] = $this->synchronizePush();
		}

		//To Log sync information
        WSAPP_Logs::add($records);

		return $records;
	}

}

?>