/*
    * 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
    *
    *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * 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 org.apache.shardingsphere.db.protocol.postgresql.packet.command.query.extended.close;
  
  import lombok.Getter;
  import lombok.RequiredArgsConstructor;
  import org.apache.shardingsphere.db.protocol.postgresql.exception.PostgreSQLProtocolException;
  import org.apache.shardingsphere.db.protocol.postgresql.packet.command.PostgreSQLCommandPacket;
  import org.apache.shardingsphere.db.protocol.postgresql.packet.command.PostgreSQLCommandPacketType;
  import org.apache.shardingsphere.db.protocol.postgresql.packet.identifier.PostgreSQLIdentifierTag;
  import org.apache.shardingsphere.db.protocol.postgresql.payload.PostgreSQLPacketPayload;
  
  /**
   * Command close packet for PostgreSQL.
   */
  @Getter
  public final class PostgreSQLComClosePacket extends PostgreSQLCommandPacket {
      
      private final Type type;
      
      private final String name;
      
      public PostgreSQLComClosePacket(final PostgreSQLPacketPayload payload) {
          payload.readInt4();
          type = Type.valueOf((char) payload.readInt1());
          name = payload.readStringNul();
      }
      
      @Override
      protected void write(final PostgreSQLPacketPayload payload) {
      }
      
      @Override
      public PostgreSQLIdentifierTag getIdentifier() {
          return PostgreSQLCommandPacketType.CLOSE_COMMAND;
      }
      
      @RequiredArgsConstructor
      public enum Type {
          
          PREPARED_STATEMENT('S'),
          
          PORTAL('P');
          
          private final char value;
          
          /**
           * Value of type.
           *
           * @param type type char
           * @return type
           * @throws PostgreSQLProtocolException PostgreSQL protocol exception
           */
          public static Type valueOf(final char type) {
              for (Type each : values()) {
                  if (type == each.value) {
                      return each;
                  }
              }
              throw new PostgreSQLProtocolException("Close type must be 'S' or 'P'. Got '%c'.", type);
          }
      }
  }