package org.metricshub.ipmi.core.coding.commands.sel;
   
   /*-
    * ╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲
    * 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.CommandCodes;
  import org.metricshub.ipmi.core.coding.commands.IpmiCommandCoder;
  import org.metricshub.ipmi.core.coding.commands.IpmiVersion;
  import org.metricshub.ipmi.core.coding.commands.ResponseData;
  import org.metricshub.ipmi.core.coding.payload.CompletionCode;
  import org.metricshub.ipmi.core.coding.payload.IpmiPayload;
  import org.metricshub.ipmi.core.coding.payload.lan.IPMIException;
  import org.metricshub.ipmi.core.coding.payload.lan.IpmiLanRequest;
  import org.metricshub.ipmi.core.coding.payload.lan.IpmiLanResponse;
  import org.metricshub.ipmi.core.coding.payload.lan.NetworkFunction;
  import org.metricshub.ipmi.core.coding.protocol.AuthenticationType;
  import org.metricshub.ipmi.core.coding.protocol.IpmiMessage;
  import org.metricshub.ipmi.core.coding.security.CipherSuite;
  import org.metricshub.ipmi.core.common.TypeConverter;
  
  import java.security.InvalidKeyException;
  import java.security.NoSuchAlgorithmException;
  
  /**
   * Wrapper for Get Sel Entry request
   */
  public class GetSelEntry extends IpmiCommandCoder {
  
      private int reservationId;
  
      private int recordId;
  
      /**
       * Initiates GetSelEntry for both encoding and decoding.
       *
       * @param version
       *            - IPMI version of the command.
       * @param cipherSuite
       *            - {@link CipherSuite} containing authentication,
       *            confidentiality and integrity algorithms for this session.
       * @param authenticationType
       *            - Type of authentication used. Must be RMCPPlus for IPMI v2.0.
       * @param reservationId
       *            - SEL reservation ID received via {@link ReserveSel} command
       *            or 0 if requesting for whole record
       * @param recordId
       *            - ID of the record to get
       */
      public GetSelEntry(IpmiVersion version, CipherSuite cipherSuite,
              AuthenticationType authenticationType, int reservationId,
              int recordId) {
          super(version, cipherSuite, authenticationType);
          this.recordId = recordId;
          this.reservationId = reservationId;
      }
  
      @Override
      public byte getCommandCode() {
          return CommandCodes.GET_SEL_ENTRY;
      }
  
      @Override
      public NetworkFunction getNetworkFunction() {
          return NetworkFunction.StorageRequest;
      }
  
      @Override
      protected IpmiPayload preparePayload(int sequenceNumber)
              throws NoSuchAlgorithmException, InvalidKeyException {
          byte[] payload = new byte[6];
  
          byte[] buffer = TypeConverter.intToByteArray(reservationId);
  
          payload[0] = buffer[3];
          payload[1] = buffer[2]; // reservation ID
  
          buffer = TypeConverter.intToByteArray(recordId);
  
          payload[2] = buffer[3];
          payload[3] = buffer[2]; // record ID
 
         payload[4] = 0;
         payload[5] = TypeConverter.intToByte(0xff);
 
         return new IpmiLanRequest(getNetworkFunction(), getCommandCode(),
                 payload, TypeConverter.intToByte(sequenceNumber));
     }
 
     @Override
     public ResponseData getResponseData(IpmiMessage message) throws IPMIException,
             NoSuchAlgorithmException, InvalidKeyException {
         if (!isCommandResponse(message)) {
             throw new IllegalArgumentException(
                     "This is not a response for Get SEL Entry command");
         }
         if (!(message.getPayload() instanceof IpmiLanResponse)) {
             throw new IllegalArgumentException("Invalid response payload");
         }
         if (((IpmiLanResponse) message.getPayload()).getCompletionCode() != CompletionCode.Ok) {
             throw new IPMIException(
                     ((IpmiLanResponse) message.getPayload())
                             .getCompletionCode());
         }
 
         byte[] raw = message.getPayload().getIpmiCommandData();
 
         if (raw == null || raw.length < 3) {
             throw new IllegalArgumentException(
                     "Invalid response payload length");
         }
 
         GetSelEntryResponseData responseData = new GetSelEntryResponseData();
 
         byte[] buffer = new byte[4];
 
         buffer[0] = raw[0];
         buffer[1] = raw[1];
         buffer[2] = 0;
         buffer[3] = 0;
 
         responseData.setNextRecordId(TypeConverter
                 .littleEndianByteArrayToInt(buffer));
 
         byte[] recordData = new byte[raw.length - 2];
 
         System.arraycopy(raw, 2, recordData, 0, recordData.length);
 
         responseData.setSelRecord(SelRecord.populateSelRecord(recordData));
 
         return responseData;
     }
 
 }