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package org.nakedobjects.nos.remote.serialise;

import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;

import org.nakedobjects.noa.NakedObjectRuntimeException;
import org.nakedobjects.nof.reflect.remote.IllegalRequestException;
import org.nakedobjects.nof.reflect.remote.data.Distribution;
import org.nakedobjects.nos.remote.command.Request;
import org.nakedobjects.nos.remote.command.socket.ServerConnection;


class SerializingServerConnection extends ServerConnection {
    private final ObjectOutputStream output;
    private final ObjectInputStream input;

    public SerializingServerConnection(final InputStream input, final OutputStream output, final Distribution server) {
        super(server);
        try {
            this.output = new ObjectOutputStream(output);
            this.input = new ObjectInputStream(input);
        } catch (IOException e) {
            throw new NakedObjectRuntimeException(e);
        }
    }

    protected Request awaitRequest() throws IOException {
        try {
            Request request = (Request) input.readObject();
            return request;
        } catch (ClassNotFoundException e) {
            throw new IllegalRequestException("unknown class received; closing connection: " + e.getMessage(), e);
        }
    }

    protected void sendError(NakedObjectRuntimeException exception) throws IOException {
        send(exception);
    }

    protected void sendResponse(Object response) throws IOException {
        send(response);
    }

    private void send(Object object) throws IOException {
        output.writeObject(object);
        output.flush();
    }

}
// Copyright (c) Naked Objects Group Ltd.