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/*
 * Authcap.java 
 * Created on 2011-08-22
 *
 * Copyright (c) Verax Systems 2011.
 * All rights reserved.
 *
 * This software is furnished under a license. Use, duplication,
 * disclosure and all other uses are restricted to the rights
 * specified in the written license agreement.
 */
package com.veraxsystems.vxipmi.sm.states;

import com.veraxsystems.vxipmi.coding.Encoder;
import com.veraxsystems.vxipmi.coding.commands.session.GetChannelAuthenticationCapabilities;
import com.veraxsystems.vxipmi.coding.commands.session.OpenSession;
import com.veraxsystems.vxipmi.coding.protocol.encoder.Protocolv20Encoder;
import com.veraxsystems.vxipmi.coding.rmcp.RmcpMessage;
import com.veraxsystems.vxipmi.sm.StateMachine;
import com.veraxsystems.vxipmi.sm.actions.ErrorAction;
import com.veraxsystems.vxipmi.sm.events.Authorize;
import com.veraxsystems.vxipmi.sm.events.StateMachineEvent;

/**
 * {@link GetChannelAuthenticationCapabilities} response was received. At this
 * point the Session Challenge is going to start. Transits to
 * {@link OpenSessionWaiting} on {@link Authorize}.
 */
public class Authcap extends State {

    @Override
    public void doTransition(StateMachine stateMachine,
            StateMachineEvent machineEvent) {
        if (machineEvent instanceof Authorize) {
            Authorize event = (Authorize) machineEvent;

            OpenSession openSession = new OpenSession(event.getSessionId(),
                    event.getPrivilegeLevel(), event.getCipherSuite());

            try {
                stateMachine.setCurrent(new OpenSessionWaiting(event.getSequenceNumber()));
                stateMachine.sendMessage(Encoder.encode(
                        new Protocolv20Encoder(), openSession,
                        event.getSequenceNumber(), 0, 0));
            } catch (Exception e) {
                stateMachine.setCurrent(this);
                stateMachine.doExternalAction(new ErrorAction(e));
            }
        } else {
            stateMachine.doExternalAction(new ErrorAction(
                    new IllegalArgumentException("Invalid transition: "
                            + machineEvent.getClass().getSimpleName())));
        }

    }

    @Override
    public void doAction(StateMachine stateMachine, RmcpMessage message) {
        // No action needed
    }

}