/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.code.or.net.impl.packet;

import com.google.code.or.common.glossary.column.StringColumn;
import com.google.code.or.common.util.ToStringBuilder;
import com.google.code.or.io.XInputStream;
import com.google.code.or.io.util.XDeserializer;
import com.google.code.or.io.util.XSerializer;
import com.google.code.or.net.Packet;

import java.io.IOException;

/**
 *
 * @author Jingqi Xu
 */
public class ErrorPacket extends AbstractPacket {
  //
  private static final long serialVersionUID = -6842057808734657288L;

  //
  public static final byte PACKET_MARKER = (byte) 0xFF;

  //
  private int packetMarker;
  private int errorCode;
  private StringColumn slash;
  private StringColumn sqlState;
  private StringColumn errorMessage;

  /**
   *
   */
  @Override
  public String toString() {
    return new ToStringBuilder(this)
        .append("packetMarker", packetMarker)
        .append("errorCode", errorCode)
        .append("slash", slash)
        .append("sqlState", sqlState)
        .append("errorMessage", errorMessage).toString();
  }

  /**
   *
   */
  public byte[] getPacketBody() {
    final XSerializer s = new XSerializer(64);
    s.writeInt(this.packetMarker, 1);
    s.writeInt(this.errorCode, 2);
    s.writeFixedLengthString(this.slash);
    s.writeFixedLengthString(this.sqlState);
    s.writeFixedLengthString(this.errorMessage);
    return s.toByteArray();
  }

  /**
   *
   */
  public int getPacketMarker() {
    return packetMarker;
  }

  public void setPacketMarker(int fieldCount) {
    this.packetMarker = fieldCount;
  }

  public int getErrorCode() {
    return errorCode;
  }

  public void setErrorCode(int errorCode) {
    this.errorCode = errorCode;
  }

  public StringColumn getSlash() {
    return slash;
  }

  public void setSlash(StringColumn slash) {
    this.slash = slash;
  }

  public StringColumn getSqlState() {
    return sqlState;
  }

  public void setSqlState(StringColumn sqlState) {
    this.sqlState = sqlState;
  }

  public StringColumn getErrorMessage() {
    return errorMessage;
  }

  public void setErrorMessage(StringColumn errorMessage) {
    this.errorMessage = errorMessage;
  }

  /**
   *
   */
  public static ErrorPacket valueOf(Packet packet) throws IOException {
    final XDeserializer d = new XDeserializer(packet.getPacketBody());
    final ErrorPacket r = new ErrorPacket();
    r.length = packet.getLength();
    r.sequence = packet.getSequence();
    r.packetMarker = d.readInt(1);
    r.errorCode = d.readInt(2);
    r.slash = d.readFixedLengthString(1);
    r.sqlState = d.readFixedLengthString(5);
    r.errorMessage = d.readFixedLengthString(d.available());
    return r;
  }

  public static ErrorPacket valueOf(int packetLength, int packetSequence, int packetMarker, XInputStream is)
      throws IOException {
    final ErrorPacket r = new ErrorPacket();
    r.length = packetLength;
    r.sequence = packetSequence;
    r.packetMarker = packetMarker;
    r.errorCode = is.readInt(2);
    r.slash = is.readFixedLengthString(1);
    r.sqlState = is.readFixedLengthString(5);
    r.errorMessage = is.readFixedLengthString(is.available());
    return r;
  }
}
