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/*
 * Rakp1Complete.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.Rakp1;
import com.veraxsystems.vxipmi.coding.commands.session.Rakp3;
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.actions.GetSikAction;
import com.veraxsystems.vxipmi.sm.events.Rakp2Ack;
import com.veraxsystems.vxipmi.sm.events.StateMachineEvent;

/**
 * At this state RAKP Message 2 was received - waiting for the confirmation to
 * send RAKP Message 3. Transition to {@link Rakp3Waiting} on {@link Rakp2Ack}.
 */
public class Rakp1Complete extends State {

    private Rakp1 rakp1;

    /**
     * Initiates state.
     *
     * @param rakp1
     *            - the {@link Rakp1} message that was sent earlier in the
     *            authentification process.
     */
    public Rakp1Complete(Rakp1 rakp1) {
        this.rakp1 = rakp1;
    }

    @Override
    public void doTransition(StateMachine stateMachine,
            StateMachineEvent machineEvent) {
        if (machineEvent instanceof Rakp2Ack) {
            Rakp2Ack event = (Rakp2Ack) machineEvent;

            Rakp3 rakp3 = new Rakp3(event.getStatusCode(),
                    event.getManagedSystemSessionId(), event.getCipherSuite(),
                    rakp1, event.getRakp1ResponseData());

            try {
                stateMachine.setCurrent(new Rakp3Waiting(event
                        .getSequenceNumber(), rakp1, event
                        .getRakp1ResponseData(), event.getCipherSuite()));
                stateMachine.sendMessage(Encoder.encode(
                        new Protocolv20Encoder(), rakp3,
                        event.getSequenceNumber(), 0, 0));
                stateMachine.doExternalAction(new GetSikAction(rakp1
                        .calculateSik(event.getRakp1ResponseData())));
            } catch (Exception e) {
                stateMachine.setCurrent(this);
                stateMachine.doExternalAction(new ErrorAction(e));
            }
        } else {
            stateMachine.doExternalAction(new ErrorAction(
                    new IllegalArgumentException("Invalid transition")));
        }

    }

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

}