using System;
using rho.common;
using rho.net;
using rho.db;
using rho.json;

namespace rho.sync
{
    public class SyncSource
    {
        private static RhoLogger LOG = RhoLogger.RHO_STRIP_LOG ? new RhoEmptyLogger() : 
		    new RhoLogger("Sync");
	    private static RhoProfiler PROF = RhoProfiler.RHO_STRIP_PROFILER ? new RhoEmptyProfiler() : 
		    new RhoProfiler();
        private static CRhodesApp RHODESAPP() { return CRhodesApp.Instance; }

	    class CAttrValue
	    {
		    public String m_strAttrib = "";
	        public String m_strValue = "";
	        public String m_strBlobSuffix = "";

	        public CAttrValue(String strAttrib, String strValue)
	        {
	            m_strAttrib = strAttrib;
	            m_strValue = strValue;

	    	    if ( m_strAttrib.endsWith("-rhoblob")  )
	            {
	    		    m_strBlobSuffix = "-rhoblob";
	                m_strAttrib = m_strAttrib.substring(0,m_strAttrib.length()-m_strBlobSuffix.length());
	            }
	        }
	    };
	
        SyncEngine m_syncEngine;
        DBAdapter  m_dbAdapter;
    
        int  m_nID;
        String m_strName = "";
        long m_token = 0;
        String m_strSyncType = "";
        boolean m_bTokenFromDB; 
    
        int m_nCurPageCount, m_nInserted, m_nDeleted, m_nTotalCount;
        boolean m_bGetAtLeastOnePage = false;
        public int m_nErrCode = RhoAppAdapter.ERR_NONE;
        public String m_strError = "", m_strServerError = "";
    
        int m_nRefreshTime = 0;
        int m_nProgressStep = -1;
        boolean m_bSchemaSource;
    
        public class CAssociation
        {
            public String m_strSrcName, m_strAttrib;
            public CAssociation( String strSrcName, String strAttrib ){m_strSrcName = strSrcName; m_strAttrib = strAttrib; }
        };
    
        Vector<CAssociation> m_arAssociations = new Vector<CAssociation>();
        Vector<NetRequest.MultipartItem> m_arMultipartItems = new Vector<NetRequest.MultipartItem>();
        Vector<String>                  m_arBlobAttrs = new Vector<String>();
        Hashtable<String, int> m_hashIgnorePushObjects = new Hashtable<String, int>();
        Hashtable<String, int> m_hashBelongsTo = new Hashtable<String, int>();
    
        public int getID() { return m_nID; }
        public String getName() { return m_strName; }
        public String getSyncType() { return m_strSyncType; }
        public String getServerError() { return m_strServerError; }
        public int getErrorCode() { return m_nErrCode; }
        public int getServerObjectsCount() { return m_nInserted + m_nDeleted; }

        public long getToken() { return m_token; }
        public boolean isTokenFromDB() { return m_bTokenFromDB; }    
        void setToken(long token){ m_token = token; m_bTokenFromDB = false; }
        public boolean isEmptyToken()
        {
    	    return m_token == 0;
        }
    
        int getProgressStep(){ return m_nProgressStep; }
        public void setProgressStep(int nProgressStep) { m_nProgressStep = nProgressStep; }

        public boolean getGetAtLeastOnePage() { return m_bGetAtLeastOnePage; }
        public int getRefreshTime() { return m_nRefreshTime; }
        public Vector<CAssociation> getAssociations() { return m_arAssociations; }

        public int getInsertedCount() { return m_nInserted; }
        public int getDeletedCount() { return m_nDeleted; }
        public void setCurPageCount(int nCurPageCount) { m_nCurPageCount = nCurPageCount; }
        public void setTotalCount(int nTotalCount) { m_nTotalCount = nTotalCount; }
        public int getCurPageCount() { return m_nCurPageCount; }
        public int getTotalCount() { return m_nTotalCount; }

        SyncEngine getSync(){ return m_syncEngine; }
        SyncNotify getNotify(){ return getSync().getNotify(); }
	    NetRequest getNet(){ return getSync().getNet(); }
	    ISyncProtocol getProtocol(){ return getSync().getProtocol(); }
	    void setRefreshTime( int nRefreshTime ){ m_nRefreshTime = nRefreshTime;}
        public DBAdapter getDB() { return m_dbAdapter; }

        public SyncSource(SyncEngine syncEngine, DBAdapter db)
        {
    	    m_syncEngine = syncEngine;
    	    m_dbAdapter = db;
    	
            m_nID = 0;
        
            m_bTokenFromDB = true;

            m_nCurPageCount = 0;
            m_nInserted = 0;
            m_nDeleted = 0;
            m_nTotalCount = 0;
            m_bGetAtLeastOnePage = false;

            m_nErrCode = RhoAppAdapter.ERR_NONE;
            m_bSchemaSource = db.isTableExist(m_strName);
        }
	
        public SyncSource(int id, String name, String strSyncType, DBAdapter db, SyncEngine syncEngine )
        {
    	    m_syncEngine = syncEngine;
    	    m_dbAdapter = db;
            m_nID = id;
            m_strName = name;
            m_strSyncType = strSyncType;
        
            m_nCurPageCount = 0;
            m_nInserted = 0;
            m_nDeleted = 0;
            m_nTotalCount = 0;
            m_bGetAtLeastOnePage = false;

            m_nErrCode = RhoAppAdapter.ERR_NONE;

            IDBResult res = db.executeSQL("SELECT token,associations from sources WHERE source_id=?", m_nID);
            if ( !res.isEnd() )
            {
        	    m_token = res.getLongByIdx(0);
                m_bTokenFromDB = true;
            }else
            {
        	    m_token = 0;
                m_bTokenFromDB = true;
            }
        
            m_bSchemaSource = db.isTableExist(m_strName);
            parseAssociations(res.getStringByIdx(1));
        }
	
        void parseAssociations(String strAssociations)
        {
            if (strAssociations.length() == 0 )
                return;

            Tokenizer oTokenizer = new Tokenizer( strAssociations, "," );

            String strSrcName = "";
            while (oTokenizer.hasMoreTokens()) 
            {
    	        String tok = oTokenizer.nextToken();
    	        if (tok.length() == 0)
    		        continue;
            
                if ( strSrcName.length() > 0 )
                {
            	    m_arAssociations.addElement( new CAssociation(strSrcName, tok) );
                    strSrcName = "";
                }else
                    strSrcName = tok;
            }
        }

        public void sync()
	    {
    	    getNotify().reportSyncStatus(RhoAppAdapter.getMessageText("syncronizing") + getName() + "...", m_nErrCode, m_strError );
    	
	        TimeInterval startTime = TimeInterval.getCurrentTime();
	        //m_bIsSearch = false;
	    
	        try{
	            //if ( isTokenFromDB() && getToken() > 1 )
	            //    syncServerChanges();  //sync only server changes, which was paused before
	            //else
	            //{
		            if ( isEmptyToken() )
		                processToken(1);
                    syncClientChanges();
    		        syncServerChanges();
		        /*			    	
		            boolean bSyncedServer = syncClientChanges();
		            if ( !bSyncedServer )
		        	    syncServerChanges();
                 */
	            //}
	        }catch(Exception exc)
	        {
	    	    //getSync().stopSync();
	    	    throw exc;
	        }finally{
		       TimeInterval endTime = TimeInterval.getCurrentTime();
		       getDB().executeSQL("UPDATE sources set last_updated=?,last_inserted_size=?,last_deleted_size=?, "+
			     "last_sync_duration=?,last_sync_success=?, backend_refresh_time=? WHERE source_id=?", 
                 endTime.toULong()/1000, getInsertedCount(), getDeletedCount(), 
                 endTime.minus(startTime).toULong(), 
                 m_bGetAtLeastOnePage?1:0, m_nRefreshTime, getID() );
	        }
	    }

	    public void syncClientChanges()//throws Exception
	    {
      	    PROF.START("Pull");

            boolean bSyncClient = false;
            {
                IDBResult res = getDB().executeSQL("SELECT object FROM changed_values WHERE source_id=? and sent<=1 LIMIT 1 OFFSET 0", getID());
                bSyncClient = !res.isEnd();
            }
            if ( bSyncClient )
                doSyncClientChanges();

            PROF.STOP("Pull");
	    }
	
        /*
        public boolean syncClientChanges()
	    {
	        boolean bSyncedServer = false;
	        if ( isPendingClientChanges() )
	        {
	    	    LOG.INFO( "Client has unconfirmed created items. Call server to update them." );	    	    	
	            syncServerChanges();
	            bSyncedServer = true;
	        }

	        if ( bSyncedServer && isPendingClientChanges() )
	        {
                LOG.INFO( "Server does not sent created items. Stop sync." );	    	    	
	            getSync().setState(SyncEngine.esStop);
	        }
	        else
	        {   
	      	    PROF.START("Pull");

	            boolean bSyncClient = false;
	            {
	                IDBResult res = getDB().executeSQL("SELECT object FROM changed_values WHERE source_id=? LIMIT 1 OFFSET 0", getID());
	                bSyncClient = !res.isEnd();
	            }
	            if ( bSyncClient )
	            {
	                doSyncClientChanges();
	                bSyncedServer = false;
	            }

	            PROF.STOP("Pull");
	        }

	        return bSyncedServer;
	    }
	
	    boolean isPendingClientChanges()
	    {
	        IDBResult res = getDB().executeSQL("SELECT object FROM changed_values WHERE source_id=? and update_type='create' and sent>1  LIMIT 1 OFFSET 0", getID());
	        return !res.isEnd();
	    }*/

	    public void addBelongsTo(String strAttrib, int nSrcID)
	    {
	        m_hashBelongsTo.put(strAttrib, nSrcID);
	    }

	    int getBelongsToSrcID(String strAttrib)
	    {
	        if ( m_hashBelongsTo.containsKey(strAttrib) )
	            return m_hashBelongsTo.get(strAttrib);

	        return -1;
	    }

	    void checkIgnorePushObjects()//throws Exception
	    {
	        // ignore changes in pending creates
	        {
	            IDBResult res = getDB().executeSQL("SELECT distinct(object) FROM changed_values where source_id=? and sent>=2", getID() );
	            for( ; !res.isEnd(); res.next() )
	            {
	                String strObject = res.getStringByIdx(0);
	                m_hashIgnorePushObjects.put(strObject, 1);
	            }
	        }

	        //check for belongs_to
	        String strAttribQuests = "";
            Vector<Object> arValues = new Vector<Object>();
	        arValues.addElement(getID());

            Hashtable<String,int>.Enumerator hashEnum = m_hashBelongsTo.GetEnumerator();
            while (hashEnum.MoveNext())
            {
	            if ( strAttribQuests.length() > 0 )
	                strAttribQuests += ",";

	            strAttribQuests += "?";
	            arValues.addElement(hashEnum.Current.Key);
	        }

	        if ( strAttribQuests.length() > 0 )
	        {
	            IDBResult res = getDB().executeSQLEx( "SELECT object, attrib, value FROM changed_values where source_id=? and sent<=1 and attrib IN ( " + strAttribQuests + " )",  
	        		    arValues );

	            for( ; !res.isEnd(); res.next() )
	            {
	                String strObject = res.getStringByIdx(0);
	                String strAttrib = res.getStringByIdx(1);
	                String strValue = res.getStringByIdx(2);

	                IDBResult res2 = getDB().executeSQL(
	                    "SELECT object FROM changed_values where source_id=? and sent>=2 and object=? LIMIT 1 OFFSET 0", 
	                    getBelongsToSrcID(strAttrib), strValue );
	            
	                if (!res2.isEnd())
	                    m_hashIgnorePushObjects.put(strObject, 1 );

	            }
	        }
	    }

	    void doSyncClientChanges()
	    {
	        String[] arUpdateTypes = {"create", "update", "delete"};
	        boolean[] arUpdateSent = {false, false, false};

	        m_arMultipartItems.removeAllElements();
	        m_arBlobAttrs.removeAllElements();
	        String strBody = "{\"source_name\":" + JSONEntry.quoteValue(getName()) + ",\"client_id\":" + JSONEntry.quoteValue(getSync().getClientID());
	        boolean bSend = false;
	        int i = 0;
	        getDB().Lock();
	        try{
		        checkIgnorePushObjects();
		    
	            for( i = 0; i < 3; i++ )
	            {
	                String strBody1;
	                strBody1 = makePushBody_Ver3(arUpdateTypes[i], true);
	                if (strBody1.length() > 0)
	                {
	                    strBody += "," + strBody1;

	                    String strBlobAttrs = "";
	                    for ( int j = 0; j < (int)m_arBlobAttrs.size(); j++)
	                    {
	                        if ( strBlobAttrs.length() > 0 )   
	                            strBlobAttrs += ",";

	                        strBlobAttrs += JSONEntry.quoteValue((String)m_arBlobAttrs.elementAt(j));
	                    }

	                    if ( strBlobAttrs.length() > 0 )
	                        strBody += ",\"blob_fields\":[" + strBlobAttrs + "]";

	                    arUpdateSent[i] = true;
	                    bSend = true;
	                }
	            }
	            strBody += "}";
            }
            finally
            {
                getDB().Unlock();
            }

            if (bSend && getSync().isContinueSync())
	        {
	            LOG.INFO( "Push client changes to server. Source: " + getName() + "Size :" + strBody.length() );
	            LOG.TRACE("Push body: " + strBody);		

	            try{
		            if ( m_arMultipartItems.size() > 0 )
		            {
		                NetRequest.MultipartItem oItem = new NetRequest.MultipartItem();
		                oItem.m_strBody = strBody;
		                //oItem.m_strContentType = getProtocol().getContentType();
		                oItem.m_strName = "cud";
		                m_arMultipartItems.addElement(oItem);
	
		                NetResponse resp = getNet().pushMultipartData( getProtocol().getClientChangesUrl(), m_arMultipartItems, getSync(), null );
		                if ( !resp.isOK() )
		                {
                            //getSync().stopSync();
		                    m_nErrCode = RhoAppAdapter.ERR_REMOTESERVER;
		                    m_strError = resp.getCharData();
		                }
		            }else
		            {
		                NetResponse resp = getNet().pushData( getProtocol().getClientChangesUrl(), strBody, getSync());
		                if ( !resp.isOK() )
		                {
                            //getSync().stopSync();
		                    m_nErrCode = RhoAppAdapter.ERR_REMOTESERVER;
		                    m_strError = resp.getCharData();
		                }
		            }
		        }catch(Exception exc)
		        {
		    	    m_nErrCode = RhoAppAdapter.getNetErrorCode(exc);
		    	    throw exc;
		        }

                for (i = 0; i < 3 && m_nErrCode == RhoAppAdapter.ERR_NONE; i++)
                {
                    if (arUpdateSent[i])
                    {
                        //oo conflicts
                        if (i < 1 && !SyncEngine.getSourceOptions().getBoolProperty(getID(), "pass_through")) //create
                            getDB().executeSQL("UPDATE changed_values SET sent=2 WHERE source_id=? and update_type=? and sent=1", getID(), arUpdateTypes[i]);
                        else
                            //
                            getDB().executeSQL("DELETE FROM changed_values WHERE source_id=? and update_type=? and sent=1", getID(), arUpdateTypes[i]);
                    }
                }
		        
	        }

	        m_arMultipartItems.removeAllElements();
	        m_arBlobAttrs.removeAllElements();
	    }
	
	    //{"source_name":"SampleAdapter","client_id":1,"create":{"1":{"brand":"Apple","name":"iPhone","price":"199.99"}}}
	    //{"source_name":"SampleAdapter","client_id":1,"update":{"1":{"brand":"Apple","name":"iPhone","price":"199.99"}}}
	    //{"source_name":"SampleAdapter","client_id":1,"delete":{"1":{"brand":"Apple","name":"iPhone","price":"199.99"}}}
	    //{"source_name":"SampleAdapter","client_id":1,"delete":{"3":{"brand":"HTC","name":"Fuze","price":"299.99"}},"create":{"1":{"brand":"Apple","name":"iPhone","price":"199.99"}},"update":{"2":{"brand":"Android","name":"G2","price":"99.99"}}}
	    String makePushBody_Ver3( String strUpdateType, boolean isSync)
	    {
		    String strBody = "";
	        getDB().Lock();
	    
	        if ( isSync )
	    	    getDB().updateAllAttribChanges();
	    
	        IDBResult res = getDB().executeSQL("SELECT attrib, object, value, attrib_type "+
	            "FROM changed_values where source_id=? and update_type =? and sent<=1 ORDER BY object", getID(), strUpdateType );

	        if ( res.isEnd() )
	        {
	    	    res.close();
	            getDB().Unlock();
	            return strBody;
	        }

	        String strCurObject = "";
	        boolean bFirst = true;
	        for( ; !res.isEnd(); res.next() )
	        {
	            String strAttrib = res.getStringByIdx(0);
	            String strObject = res.getStringByIdx(1);
	            String value = res.getStringByIdx(2);
	            String attribType = res.getStringByIdx(3);

                if (m_hashIgnorePushObjects.containsKey(strObject) || strObject.length() == 0)
    	        	continue;

                if (attribType.compareTo("blob.file") == 0 && value.length() > 0)
	            {
	                NetRequest.MultipartItem oItem = new NetRequest.MultipartItem();
	                oItem.m_strFilePath = RHODESAPP().resolveDBFilesPath(value);
	                oItem.m_strContentType = "application/octet-stream";
	                oItem.m_strName = strAttrib + "-" + strObject;

	                m_arBlobAttrs.addElement(strAttrib);
	                m_arMultipartItems.addElement(oItem);
	            }

	            if ( strBody.length() == 0 )
	            {
	                if ( !isSync )
	                    strBody += "{";
	                else
	                    strBody += "\"" + strUpdateType + "\":{";
	            }

	            if ( strObject.compareTo(strCurObject) != 0 )
	            {
	                if ( strCurObject.length() > 0 )
	                {
	                    if ( !bFirst )
	                        strBody += "}";
	                    strBody += ",";
	                }

	                bFirst = true;
	                strBody += JSONEntry.quoteValue(strObject);
	                strCurObject = strObject;
	            }
	            
	            if (!bFirst)
	                strBody += ",";

	            if ( strAttrib.length() > 0  )
	            {
	                if ( bFirst )
	                    strBody += ":{";

	                strBody += JSONEntry.quoteValue(strAttrib) + ":" + JSONEntry.quoteValue(value);
	                bFirst = false;
	            }
	        }

	        if ( strBody.length() > 0 )
	        {
	            if ( !bFirst )
	                strBody += "}";

	            strBody += "}";
	        }

	        if ( isSync )	    
	    	    getDB().executeSQL("UPDATE changed_values SET sent=1 WHERE source_id=? and update_type=? and sent=0", getID(), strUpdateType );
	    
	        getDB().Unlock();
	    
	        return strBody;
	    }

        public void applyChangedValues()
	    {
	        String strBody = makePushBody_Ver3("create", false);
	        if ( strBody != null && strBody.length() > 0 )
	        {
	            JSONEntry oEntry = new JSONEntry(strBody);
	            processSyncCommand("insert", oEntry, false );
	        }

	        strBody = makePushBody_Ver3("delete", false);
	        if ( strBody != null && strBody.length() > 0 )
	        {
	            JSONEntry oEntry = new JSONEntry(strBody);
	            processSyncCommand("delete", oEntry, false );
	        }

	        strBody = makePushBody_Ver3("update", false);
	        if ( strBody != null && strBody.length() > 0 )
	        {
	            JSONEntry oEntry = new JSONEntry(strBody);
	            processSyncCommand("insert", oEntry, false );
	        }
	    }
	
	    void syncServerChanges()
	    {
		    LOG.INFO("Sync server changes source ID :" + getID() );

            while (getSync().isContinueSync() &&
                    (m_nErrCode == RhoAppAdapter.ERR_NONE || m_nErrCode == RhoAppAdapter.ERR_CUSTOMSYNCSERVER))
	        {
	            setCurPageCount(0);
	            String strUrl = getProtocol().getServerQueryUrl("");
	            String strQuery = getProtocol().getServerQueryBody(getName(), getSync().getClientID(), getSync().getSyncPageSize());

	            if ( !m_bTokenFromDB && getToken() > 1 )
	                strQuery += "&token=" + getToken();

			    LOG.INFO( "Pull changes from server. Url: " + (strUrl+strQuery) );
			
			    NetResponse resp = null;
			    try{
		            PROF.START("Net");	    
		            resp = getNet().pullData(strUrl+strQuery, getSync());
				    PROF.STOP("Net");
	
		            if ( !resp.isOK() )
		            {
		                //getSync().stopSync();
		                m_nErrCode = RhoAppAdapter.getErrorFromResponse(resp);
		                m_strError = resp.getCharData();
		                continue;
		            }
		        }catch(Exception exc)
		        {
		    	    m_nErrCode = RhoAppAdapter.getNetErrorCode(exc);
		    	    throw exc;
		        }

		        String szData = null;
		        String strTestResp = SyncEngine.getSourceOptions().getProperty(getID(), "rho_server_response");
		        if ( strTestResp != null && strTestResp.length() > 0 )
		    	    szData = strTestResp;
		        else
		    	    szData = resp.getCharData();		    

	            PROF.START("Parse");
	            JSONArrayIterator oJsonArr = new JSONArrayIterator(szData);
	            PROF.STOP("Parse");

	            processServerResponse_ver3(oJsonArr);

	            if (SyncEngine.getSourceOptions().getBoolProperty(getID(), "pass_through"))
	        	    processToken(0);
	        
	            if ( getToken() == 0 )
	                break;
	        }
	    
	        if ( getSync().isSchemaChanged() )
	    	    getSync().stopSync();	    
	    }

	    //{"create-error":{"0_broken_object_id":{"name":"wrongname","an_attribute":"error create"},"0_broken_object_id-error":{"message":"error create"}}}
	    boolean processServerErrors(JSONEntry oCmds)
	    {
            String[] arErrTypes = { "source-error", "search-error", "create-error", "update-error", "delete-error", "update-rollback", null };
	        boolean bRes = false;
	        for( int i = 0; ; i++ )
	        {
	            if ( arErrTypes[i] == null )
	                break;
	            if ( !oCmds.hasName(arErrTypes[i]) )
	                continue;

	            bRes = true;
	            m_nErrCode = RhoAppAdapter.ERR_CUSTOMSYNCSERVER;

	            JSONEntry errSrc = oCmds.getEntry(arErrTypes[i]);
	            JSONStructIterator errIter = new JSONStructIterator(errSrc);
	            for( ; !errIter.isEnd(); errIter.next() )
	            {
	                String strKey = errIter.getCurKey();

	                if ( i == 0 || i == 1 )//"source-error", "search-error" 
	                {
	                    if ( errIter.getCurValue().hasName("message") )
	                    {
	                	    if ( m_strServerError.length() > 0 )
	                		    m_strServerError += "&";
	                	
	                        m_strServerError += "server_errors[" + URI.urlEncode(strKey) + "][message]=" + URI.urlEncode(errIter.getCurValue().getString("message"));
	                    }
	                }
	                else
	                {
                        //"create-error", "update-error", "delete-error", "update-rollback"
	                    String strObject = strKey;

	                    if ( strObject.endsWith("-error") )
	                    {
	                        strObject = strObject.substring(0, strKey.length()-6);
	                	    if ( m_strServerError.length() > 0 )
	                		    m_strServerError += "&";
	                    
	                        m_strServerError += "server_errors[" + arErrTypes[i] + "][" + URI.urlEncode(strObject) + "][message]=" + URI.urlEncode(errIter.getCurValue().getString("message"));
	                    }else
	                    {
		                    JSONStructIterator attrIter = new JSONStructIterator(errIter.getCurValue());
		                    for( ; !attrIter.isEnd(); attrIter.next() )
		                    {
			                    String strAttrName = attrIter.getCurKey();
			                    String strAttrValue = attrIter.getCurString();
			                
			                    if ( m_strServerError.length() > 0 )
			                	    m_strServerError += "&";
			                
			                    m_strServerError += "server_errors[" + arErrTypes[i] + "][" + URI.urlEncode(strObject) + "][attributes][" + URI.urlEncode(strAttrName) + "]=" + URI.urlEncode(strAttrValue);
		                    }
	                    }
	                }
	            }
	        }

	        return bRes;
	    }

        public void processServerResponse_ver3(JSONArrayIterator oJsonArr)
	    {
	        PROF.START("Data1");

	        int nVersion = 0;
	        if ( !oJsonArr.isEnd() && oJsonArr.getCurItem().hasName("version") )
	        {
	            nVersion = oJsonArr.getCurItem().getInt("version");
	            oJsonArr.next();
	        }

	        if ( nVersion != getProtocol().getVersion() )
	        {
	            LOG.ERROR("Sync server send data with incompatible version. Client version: " + getProtocol().getVersion() +
	                "; Server response version: " + nVersion + ". Source name: " + getName() );
	            getSync().stopSync();
	            m_nErrCode = RhoAppAdapter.ERR_UNEXPECTEDSERVERRESPONSE;
	            return;
	        }

	        if ( !oJsonArr.isEnd() && oJsonArr.getCurItem().hasName("token"))
	        {
	            processToken(oJsonArr.getCurItem().getUInt64("token"));
	            oJsonArr.next();
	        }

	        if ( !oJsonArr.isEnd() && oJsonArr.getCurItem().hasName("source") )
	        {
	            //skip it. it uses in search only
	            oJsonArr.next();
	        }

	        if ( !oJsonArr.isEnd() && oJsonArr.getCurItem().hasName("count") )
	        {
	            setCurPageCount(oJsonArr.getCurItem().getInt("count"));
	            oJsonArr.next();
	        }

	        if ( !oJsonArr.isEnd() && oJsonArr.getCurItem().hasName("refresh_time") )
	        {
	            setRefreshTime(oJsonArr.getCurItem().getInt("refresh_time"));
	            oJsonArr.next();
	        }

	        if ( !oJsonArr.isEnd() && oJsonArr.getCurItem().hasName("progress_count") )
	        {
	            //TODO: progress_count
	            //setTotalCount(oJsonArr.getCurItem().getInt("progress_count"));
	            oJsonArr.next();
	        }

	        if ( !oJsonArr.isEnd() && oJsonArr.getCurItem().hasName("total_count") )
	        {
	            setTotalCount(oJsonArr.getCurItem().getInt("total_count"));
	            oJsonArr.next();
	        }

	        //if ( getServerObjectsCount() == 0 )
	        //    getNotify().fireSyncNotification(this, false, RhoAppAdapter.ERR_NONE, "");

	        if ( getToken() == 0 )
	        {
	            //oo conflicts
	            getDB().executeSQL("DELETE FROM changed_values where source_id=? and sent>=3", getID() );
	            //

	        }

		    LOG.INFO("Got " + getCurPageCount() + "(Processed: " +  getServerObjectsCount() + ") records of " + getTotalCount() + " from server. Source: " + getName()
	             + ". Version: " + nVersion );

	        PROF.STOP("Data1");
	        if ( !oJsonArr.isEnd() && getSync().isContinueSync() )
	        {
	            JSONEntry oCmds = oJsonArr.getCurItem();
	            PROF.START("Data");

	            if ( oCmds.hasName("schema-changed") )
	            {
	                getSync().setSchemaChanged(true);
	            }else if ( !processServerErrors(oCmds) )
	            {
		            getDB().startTransaction();
		        
	                if (SyncEngine.getSourceOptions().getBoolProperty(getID(), "pass_through"))
	                {
	                    if ( m_bSchemaSource )
	                        getDB().executeSQL( "DELETE FROM " + getName() );
	                    else
	                        getDB().executeSQL( "DELETE FROM object_values WHERE source_id=?", getID() );
	                }
		        
		            if ( oCmds.hasName("metadata") && getSync().isContinueSync() )
		            {
		                String strMetadata = oCmds.getString("metadata");
		                getDB().executeSQL("UPDATE sources SET metadata=? WHERE source_id=?", strMetadata, getID() );
		            }
		            if ( oCmds.hasName("links") && getSync().isContinueSync() )
		                processSyncCommand("links", oCmds.getEntry("links"), true );
		            if ( oCmds.hasName("delete") && getSync().isContinueSync() )
		                processSyncCommand("delete", oCmds.getEntry("delete"), true );
		            if ( oCmds.hasName("insert") && getSync().isContinueSync() )
		                processSyncCommand("insert", oCmds.getEntry("insert"), true );
	
		            PROF.STOP("Data");
	
			        PROF.START("DB");
		            getDB().endTransaction();
		            PROF.STOP("DB");
	
		            getNotify().fireObjectsNotification();
	            }
	        }

		    PROF.START("Data1");
	        if ( getCurPageCount() > 0 )
	            getNotify().fireSyncNotification(this, false, RhoAppAdapter.ERR_NONE, "");
		    PROF.STOP("Data1");
	    }
	
	    void processSyncCommand(String strCmd, JSONEntry oCmdEntry, boolean bCheckUIRequest)
	    {
	        JSONStructIterator objIter = new JSONStructIterator(oCmdEntry);

	        for( ; !objIter.isEnd() && getSync().isContinueSync(); objIter.next() )
	        {
	            String strObject = objIter.getCurKey();
	            JSONStructIterator attrIter = new JSONStructIterator( objIter.getCurValue() );
	        
	            try
	            {
		            if ( m_bSchemaSource )
		                processServerCmd_Ver3_Schema(strCmd,strObject,attrIter);
		            else
		            {
		                for( ; !attrIter.isEnd(); attrIter.next() )
		                {
		                    String strAttrib = attrIter.getCurKey();
		                    String strValue = attrIter.getCurString();
	
		                    processServerCmd_Ver3(strCmd,strObject,strAttrib,strValue);
		                }
		            }
	            }catch(DBException exc)
		        {
		    	    LOG.ERROR("Sync of server changes failed for " + getName() + ";object: " + strObject, exc);
		        }
		    
	            if ( getSyncType().compareTo("none") == 0 )
	        	    continue;
	        
	            if ( bCheckUIRequest )
	            {
		            int nSyncObjectCount  = getNotify().incLastSyncObjectCount(getID());
		            if ( getProgressStep() > 0 && (nSyncObjectCount%getProgressStep() == 0) )
		                getNotify().fireSyncNotification(this, false, RhoAppAdapter.ERR_NONE, "");
		        
		            if ( getDB().isUIWaitDB() )
		            {
			            LOG.INFO("Commit transaction because of UI request.");
		                getDB().endTransaction();
		                SyncThread.sleep(1000);
		                getDB().startTransaction();
		            }
	            }
	        }
	    }
	
	    void processAssociations(String strOldObject, String strNewObject)
	    {
            for ( int i = 0; i < m_arAssociations.size(); i++ )
            {
                SyncSource pSrc = getSync().findSourceByName( ((CAssociation)m_arAssociations.elementAt(i)).m_strSrcName);
	            if ( pSrc != null )
	                pSrc.updateAssociation(strOldObject, strNewObject, ((CAssociation)m_arAssociations.elementAt(i)).m_strAttrib);
	        }
	    }

	    void updateAssociation(String strOldObject, String strNewObject, String strAttrib)
	    {
	        if ( m_bSchemaSource )
	        {
	            String strSqlUpdate = "UPDATE ";
	            strSqlUpdate += getName() + " SET " + strAttrib + "=? where " + strAttrib + "=?";

	            getDB().executeSQL(strSqlUpdate, strNewObject, strOldObject );
	        }
	        else
	            getDB().executeSQL("UPDATE object_values SET value=? where attrib=? and source_id=? and value=?", 
	                strNewObject, strAttrib, getID(), strOldObject );

	        getDB().executeSQL("UPDATE changed_values SET value=? where attrib=? and source_id=? and value=?", 
	            strNewObject, strAttrib, getID(), strOldObject );
	    }
	
	    void processServerCmd_Ver3_Schema(String strCmd, String strObject, JSONStructIterator attrIter)
	    {
	        if ( strCmd.compareTo("insert") == 0 )
	        {
	            Vector<Object> vecValues = new Vector<Object>();
                Vector<String> vecAttrs = new Vector<String>();
	            String strCols = "", strQuest = "", strSet = "";
	            for( ; !attrIter.isEnd(); attrIter.next() )
	            {
	                CAttrValue oAttrValue = new CAttrValue(attrIter.getCurKey(),attrIter.getCurString());
	                if ( !processBlob(strCmd,strObject,oAttrValue) )
	                    break;
	        	
	                if ( strCols.length() > 0 )
	                    strCols += ",";
	                if ( strQuest.length() > 0)
	                    strQuest += ",";
	                if ( strSet.length() > 0)
	                    strSet += ",";

	                strCols += oAttrValue.m_strAttrib;
	                strQuest += "?";
	                strSet += oAttrValue.m_strAttrib + "=?";
	                vecAttrs.addElement(oAttrValue.m_strAttrib);
	                vecValues.addElement(oAttrValue.m_strValue);
	            }
	            vecValues.addElement(strObject);
	            if ( strCols.length() > 0 )
	                strCols += ",";
	            if ( strQuest.length() > 0)
	                strQuest += ",";
	        
	            strCols += "object";
	            strQuest += "?";

	            String strSqlInsert = "INSERT INTO ";
	            strSqlInsert += getName() + " (";
	            strSqlInsert += strCols + ") VALUES(" + strQuest + ")";

	            if ( !getSync().isContinueSync() )
	                return;

	            IDBResult resInsert = getDB().executeSQLReportNonUniqueEx(strSqlInsert, vecValues );
	            if ( resInsert.isNonUnique() )
	            {
	                String strSqlUpdate = "UPDATE ";
	                strSqlUpdate += getName() + " SET " + strSet + " WHERE object=?";
	                getDB().executeSQLEx(strSqlUpdate, vecValues);

	                if ( getSyncType().compareTo("none") != 0 )
	                {
		                // oo conflicts
		                for( int i = 0; i < (int)vecAttrs.size(); i++ )
		                {
		                    getDB().executeSQL("UPDATE changed_values SET sent=4 where object=? and attrib=? and source_id=? and sent>1", 
		                        strObject, vecAttrs.elementAt(i), getID() );
		                }
		                //
	                }
	            }

	            if ( getSyncType().compareTo("none") != 0 )	        
	        	    getNotify().onObjectChanged(getID(),strObject, SyncNotify.enUpdate);
	        
	            m_nInserted++;
	        }else if (strCmd.compareTo("delete") == 0)
	        {
	    	    Vector<String> vecAttrs = new Vector<String>();
	            String strSet = "";
	            for( ; !attrIter.isEnd() && getSync().isContinueSync(); attrIter.next() )
	            {
	        	    CAttrValue oAttrValue = new CAttrValue(attrIter.getCurKey(),attrIter.getCurString());
	        	
	                if ( strSet.length() > 0 )
	                    strSet += ",";

	                vecAttrs.addElement(oAttrValue.m_strAttrib);
	                strSet += oAttrValue.m_strAttrib + "=NULL";
	            }

	            String strSqlUpdate = "UPDATE ";
	            strSqlUpdate += getName() + " SET " + strSet + " WHERE object=?";
	        
	            if ( strSet.length() == 0 )
	                return;
	        
	            getDB().executeSQL(strSqlUpdate, strObject);
	            //Remove item if all nulls
	            String strSelect = "SELECT * FROM " + getName() + " WHERE object=?";
	            IDBResult res = getDB().executeSQL( strSelect, strObject );
	            if ( !res.isEnd() )
	            {
	                boolean bAllNulls = true;
	                for( int i = 0; i < res.getColCount(); i ++)
	                {
	                    if ( !res.isNullByIdx(i) && res.getColName(i).compareTo("object")!=0 )
	                    {
	                        bAllNulls = false;
	                        break;
	                    }
	                }

	                if (bAllNulls)
	                {
	                    String strDelete = "DELETE FROM " + getName() + " WHERE object=?";
	                    getDB().executeSQL( strDelete, strObject);
	                }
	            }
	        
	            if ( getSyncType().compareTo("none") != 0 )
	            {
		            getNotify().onObjectChanged(getID(), strObject, SyncNotify.enDelete);
		            // oo conflicts
		            for( int i = 0; i < (int)vecAttrs.size(); i++ )
		            {
		                getDB().executeSQL("UPDATE changed_values SET sent=3 where object=? and attrib=? and source_id=?", 
		                    strObject, vecAttrs.elementAt(i), getID() );
		            }
		            //
	            }
	        
	            m_nDeleted++;
	        }else if ( strCmd.compareTo("links") == 0 )
	        {
	            String strValue = attrIter.getCurString();
	            processAssociations(strObject, strValue);
	        
	            String strSqlUpdate = "UPDATE ";
	            strSqlUpdate += getName() + " SET object=? WHERE object=?";
	            getDB().executeSQL(strSqlUpdate, strValue, strObject);

	            getDB().executeSQL("UPDATE changed_values SET object=?,sent=3 where object=? and source_id=?", strValue, strObject, getID() );
	            getNotify().onObjectChanged(getID(), strObject, SyncNotify.enCreate);
	        }

	    }
	
	    boolean processBlob( String strCmd, String strObject, CAttrValue oAttrValue )
	    {
	        //TODO: when server return delete with rhoblob postfix - delete isBlobAttr
	        if ( !(oAttrValue.m_strBlobSuffix.length() > 0 || getDB().getAttrMgr().isBlobAttr(getID(), oAttrValue.m_strAttrib)) )
	            return true;

	        boolean bDownload = true;
	        String strDbValue = "";
	        if ( !getDB().getAttrMgr().isOverwriteBlobFromServer(getID(), oAttrValue.m_strAttrib) )
	        {
	            if ( m_bSchemaSource )
	            {
	                String strSelect = "SELECT " + oAttrValue.m_strAttrib + " FROM " + getName() + " WHERE object=?";
	                IDBResult res = getDB().executeSQL( strSelect, strObject);
	                if (!res.isEnd())
	                {
	                    strDbValue = res.getStringByIdx(0);
	                    bDownload = strDbValue == null || strDbValue.length() == 0;
	                }
	            }else
	            {
	                IDBResult res = getDB().executeSQL(
	                    "SELECT value FROM object_values WHERE object=? and attrib=? and source_id=?",
	                    strObject, oAttrValue.m_strAttrib, getID() );
	                if (!res.isEnd())
	                {
	                    strDbValue = res.getStringByIdx(0);
	                    bDownload = strDbValue == null || strDbValue.length() == 0;
	                }
	            }
	        }

	        if ( bDownload )
	        {
	    	    boolean bRes = false;
	            getDB().endTransaction();
	            try{
	        	    bRes = downloadBlob(oAttrValue);
	            }finally
	            {
	        	    getDB().startTransaction();
	            }
	        
	            return bRes;
	        }
/*	    
	        String fName = makeFileName( oAttrValue );	  
	        String fOldName = RHODESAPP().resolveDBFilesPath(strDbValue);
	        RhoClassFactory.createFile().renameOverwrite(fOldName, fName); 
	    
	        oAttrValue.m_strValue = FilePath.getRelativePath( fName, RhodesApp.getInstance().getRhoRootPath());
 */
            oAttrValue.m_strValue = strDbValue;
	        return true;
	    }
	
	    void processServerCmd_Ver3(String strCmd, String strObject, String strAttriba, String strValuea)
	    {
	        CAttrValue oAttrValue = new CAttrValue(strAttriba,strValuea);
		
	        if ( strCmd.compareTo("insert") == 0 )
	        {
	            if ( !processBlob(strCmd,strObject,oAttrValue) )
	                return;

	            IDBResult resInsert = getDB().executeSQLReportNonUnique("INSERT INTO object_values "+
	                    "(attrib, source_id, object, value) VALUES(?,?,?,?)", 
	                    oAttrValue.m_strAttrib, getID(), strObject, oAttrValue.m_strValue );
	        
	            if ( resInsert.isNonUnique() )
	            {
	                getDB().executeSQL("UPDATE object_values " +
                        "SET value=? WHERE object=? and attrib=? and source_id=?", 
                         oAttrValue.m_strValue, strObject, oAttrValue.m_strAttrib, getID() );

	                if ( getSyncType().compareTo("none") != 0 )
	                {
		                // oo conflicts
		                getDB().executeSQL("UPDATE changed_values SET sent=4 where object=? and attrib=? and source_id=? and sent>1", 
		                        strObject, oAttrValue.m_strAttrib, getID() );
		                //
	                }
	            }

	            if ( getSyncType().compareTo("none") != 0 )	        
	        	    getNotify().onObjectChanged(getID(),strObject, SyncNotify.enUpdate);
	        
	            m_nInserted++;
	        }else if (strCmd.compareTo("delete") == 0)
	        {
	            getDB().executeSQL("DELETE FROM object_values where object=? and attrib=? and source_id=?", strObject, oAttrValue.m_strAttrib, getID() );
	        
	            if ( getSyncType().compareTo("none") != 0 )
	            {
		            getNotify().onObjectChanged(getID(), strObject, SyncNotify.enDelete);
		            // oo conflicts
		            getDB().executeSQL("UPDATE changed_values SET sent=3 where object=? and attrib=? and source_id=?", strObject, oAttrValue.m_strAttrib, getID() );
		            //
	            }
	            m_nDeleted++;
	        }else if ( strCmd.compareTo("links") == 0 )
	        {
	            processAssociations(strObject, oAttrValue.m_strValue);

	            getDB().executeSQL("UPDATE object_values SET object=? where object=? and source_id=?", oAttrValue.m_strValue, strObject, getID() );
	            getDB().executeSQL("UPDATE changed_values SET object=?,sent=3 where object=? and source_id=?", oAttrValue.m_strValue, strObject, getID() );

	            getNotify().onObjectChanged(getID(), strObject, SyncNotify.enCreate);
	        }

	    }
	
	    private String makeFileName(CAttrValue value)
	    {
		    String strExt = "";

	        String strQuest = URI.getQueryString(value.m_strValue);

	        if (strQuest != null && strQuest.length() > 0)
	        {
			    int nExt = strQuest.indexOf("extension=");
			    if ( nExt >= 0 )
	            {
				    int nExtEnd = strQuest.indexOf("&", nExt);
				    if (nExtEnd < 0 )
					    nExtEnd = strQuest.length();
				
				    strExt = strQuest.substring(nExt+10, nExtEnd);
			    }
	        }

	        if ( strExt.length() == 0 )
	        {
	            String strFileName = URI.getLastNamePart(value.m_strValue);
	            int nExt = strFileName != null ? strFileName.lastIndexOf('.') : -1;
			    if ( nExt >= 0 )
	                strExt = strFileName.substring(nExt);
	        }

	        if ( strExt.length() == 0 )
	            strExt = ".bin";
	        else if ( strExt.charAt(0) != '.' )    
	            strExt = "." + strExt;

		    String fName = RHODESAPP().getBlobsDirPath() + "/id_" + TimeInterval.getCurrentTime().toULong() + strExt;
		
		    return  fName;
	    }
	
	    boolean downloadBlob(CAttrValue value)
	    {
		    String fName = makeFileName( value );
		    String url = value.m_strValue;
		    int nQuest = url.lastIndexOf('?');
		    if ( nQuest > 0 )
			    url += "&";
		    else
			    url += "?";
		    url += "client_id=" + getSync().getClientID();
		
		    try{
			    NetResponse resp = getNet().pullFile(url, fName, getSync(), null);
	            if ( !resp.isOK() )
	            {
	        	    //getSync().stopSync();
                    CRhoFile.deleteFile(fName);
	        	    m_nErrCode = RhoAppAdapter.getErrorFromResponse(resp);
	        	    return false;
	            }
	        }catch(Exception exc)
	        {
	    	    m_nErrCode = RhoAppAdapter.getNetErrorCode(exc);
	    	    throw exc;
	        }
        
	        value.m_strValue = CFilePath.getRelativePath( fName, CRhodesApp.getRhoRootPath());
        
            return true;
	    }

        public void processToken(long token)
	    {
		    if ( token > 1 && getToken() == token ){
			    //Delete non-confirmed records
	    	
	            setToken( token ); //For m_bTokenFromDB = false;
	            //getDB().executeSQL("DELETE FROM object_values where source_id=? and token=?", getID(), token );
	            //TODO: add special table for id,token
		    }else
	        {
	            setToken( token );
	            getDB().executeSQL("UPDATE sources SET token=? where source_id=?", token, getID() );
		    }
	
	    }
    }
}