/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.hc.core5.http.message;
  
  import java.io.Serializable;
  import java.util.Objects;
  
  import org.apache.hc.core5.annotation.Contract;
  import org.apache.hc.core5.annotation.ThreadingBehavior;
  import org.apache.hc.core5.http.NameValuePair;
  import org.apache.hc.core5.util.Args;
  import org.apache.hc.core5.util.LangUtils;
  import org.apache.hc.core5.util.TextUtils;
  
  /**
   * Basic implementation of {@link NameValuePair}.
   *
   * @since 4.0
   */
  @Contract(threading = ThreadingBehavior.IMMUTABLE)
  public class BasicNameValuePair implements NameValuePair, Serializable {
  
      private static final long serialVersionUID = -6437800749411518984L;
  
      private final String name;
      private final String value;
  
      /**
       * Default Constructor taking a name and a value. The value may be null.
       *
       * @param name The name.
       * @param value The value.
       */
      public BasicNameValuePair(final String name, final String value) {
          super();
          this.name = Args.notNull(name, "Name");
          this.value = value;
      }
  
      @Override
      public String getName() {
          return this.name;
      }
  
      @Override
      public String getValue() {
          return this.value;
      }
  
      @Override
      public String toString() {
          // don't call complex default formatting for a simple toString
  
          if (this.value == null) {
              return name;
          }
          final int len = this.name.length() + 1 + this.value.length();
          final StringBuilder buffer = new StringBuilder(len);
          buffer.append(this.name);
          buffer.append("=");
          buffer.append(this.value);
          return buffer.toString();
      }
  
      @Override
      public boolean equals(final Object obj) {
          if (this == obj) {
              return true;
          }
          if (obj instanceof BasicNameValuePair) {
              final BasicNameValuePair that = (BasicNameValuePair) obj;
              return this.name.equalsIgnoreCase(that.name) && Objects.equals(this.value, that.value);
          }
          return false;
     }
 
     @Override
     public int hashCode() {
         int hash = LangUtils.HASH_SEED;
         hash = LangUtils.hashCode(hash, TextUtils.toLowerCase(this.name));
         hash = LangUtils.hashCode(hash, this.value);
         return hash;
     }
 
 }