/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/

package org.kie.server.controller.websocket.common.handlers;

import org.kie.server.api.marshalling.Marshaller;
import org.kie.server.api.marshalling.MarshallerFactory;
import org.kie.server.api.marshalling.MarshallingException;
import org.kie.server.api.marshalling.MarshallingFormat;

public interface InternalMessageHandler {

    Marshaller marshaller = MarshallerFactory.getMarshaller(MarshallingFormat.JSON, InternalMessageHandler.class.getClassLoader());
    
    default <T> T deserialize(String content, Class<T> type) {
        if (type == null) {
            return null;
        }

        try {
            return marshaller.unmarshall(content, type);
        } catch ( MarshallingException e ) {
            throw new IllegalStateException( "Error while deserializing data received from server!", e );
        }
    }

    default String serialize(Object object) {
        if (object == null) {
            return "";
        }

        try {
            return marshaller.marshall(object);
        } catch ( MarshallingException e ) {
            throw new IllegalStateException( "Error while serializing request data!", e );
        }
    }

    String onMessage(String message);
    
    default void afterResponseSent() {
        
    }
    
    default InternalMessageHandler getNextHandler() {
        return null;
    }
}
