package org.metricshub.ipmi.core.sm.states;
   
   /*-
    * ╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲
    * IPMI Java Client
    * ჻჻჻჻჻჻
    * Copyright 2023 Verax Systems, MetricsHub
    * ჻჻჻჻჻჻
    * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Lesser General Public License as
   * published by the Free Software Foundation, either version 3 of the
   * License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Lesser Public License for more details.
   *
   * You should have received a copy of the GNU General Lesser Public
   * License along with this program.  If not, see
   * <http://www.gnu.org/licenses/lgpl-3.0.html>.
   * ╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱
   */
  
  import org.metricshub.ipmi.core.coding.commands.session.OpenSession;
  import org.metricshub.ipmi.core.coding.payload.PlainMessage;
  import org.metricshub.ipmi.core.coding.protocol.AuthenticationType;
  import org.metricshub.ipmi.core.coding.protocol.IpmiMessage;
  import org.metricshub.ipmi.core.coding.protocol.PayloadType;
  import org.metricshub.ipmi.core.coding.protocol.decoder.PlainCommandv20Decoder;
  import org.metricshub.ipmi.core.coding.protocol.decoder.ProtocolDecoder;
  import org.metricshub.ipmi.core.coding.protocol.decoder.Protocolv20Decoder;
  import org.metricshub.ipmi.core.coding.rmcp.RmcpMessage;
  import org.metricshub.ipmi.core.coding.security.CipherSuite;
  import org.metricshub.ipmi.core.common.TypeConverter;
  import org.metricshub.ipmi.core.sm.StateMachine;
  import org.metricshub.ipmi.core.sm.actions.ErrorAction;
  import org.metricshub.ipmi.core.sm.actions.ResponseAction;
  import org.metricshub.ipmi.core.sm.events.DefaultAck;
  import org.metricshub.ipmi.core.sm.events.StateMachineEvent;
  import org.metricshub.ipmi.core.sm.events.Timeout;
  
  /**
   * Waiting for the {@link OpenSession} response.<br>
   * <ul>
   * <li>Transition to {@link OpenSessionComplete} on {@link DefaultAck}</li>
   * <li> Transition to {@link Authcap} on {@link Timeout}</li>
   * </ul>
   */
  public class OpenSessionWaiting extends State {
  
      private int tag;
  
      public OpenSessionWaiting(int tag) {
          this.tag = tag;
      }
  
      @Override
      public void doTransition(StateMachine stateMachine,
              StateMachineEvent machineEvent) {
          if (machineEvent instanceof DefaultAck) {
              stateMachine.setCurrent(new OpenSessionComplete());
          } else if (machineEvent instanceof Timeout) {
              stateMachine.setCurrent(new Authcap());
          } else {
              stateMachine.doExternalAction(new ErrorAction(
                      new IllegalArgumentException("Invalid transition")));
          }
      }
  
      @Override
      public void doAction(StateMachine stateMachine, RmcpMessage message) {
          if (ProtocolDecoder.decodeAuthenticationType(message) != AuthenticationType.RMCPPlus) {
              return; // this isn't IPMI v2.0 message so we ignore it
          }
          PlainCommandv20Decoder decoder = new PlainCommandv20Decoder(
                  CipherSuite.getEmpty());
          if (Protocolv20Decoder.decodePayloadType(message.getData()[1]) != PayloadType.RmcpOpenSessionResponse) {
              return;
          }
          IpmiMessage ipmiMessage = null;
          try {
              ipmiMessage = decoder.decode(message);
              OpenSession openSession = new OpenSession(CipherSuite.getEmpty());
              if (openSession.isCommandResponse(ipmiMessage)
                      && TypeConverter.byteToInt(((PlainMessage) ipmiMessage
                              .getPayload()).getPayloadData()[0]) == tag) {
                  stateMachine.doExternalAction(new ResponseAction(openSession
                          .getResponseData(ipmiMessage)));
              }
          } catch (Exception e) {
              stateMachine.doExternalAction(new ErrorAction(e));
          }
      }
  }