/*
    * ====================================================================
    * 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.client5.http.impl.cookie;
  
  import org.apache.hc.client5.http.cookie.CommonCookieAttributeHandler;
  import org.apache.hc.client5.http.cookie.Cookie;
  import org.apache.hc.client5.http.cookie.CookieOrigin;
  import org.apache.hc.client5.http.cookie.MalformedCookieException;
  import org.apache.hc.client5.http.cookie.SetCookie;
  import org.apache.hc.core5.annotation.Contract;
  import org.apache.hc.core5.annotation.ThreadingBehavior;
  import org.apache.hc.core5.util.Args;
  import org.apache.hc.core5.util.TextUtils;
  
  /**
   * Cookie {@code path} attribute handler.
   *
   * @since 4.0
   */
  @Contract(threading = ThreadingBehavior.STATELESS)
  public class BasicPathHandler implements CommonCookieAttributeHandler {
  
      /**
       * Singleton instance.
       *
       * @since 5.2
       */
      public static final BasicPathHandler INSTANCE = new BasicPathHandler();
  
      public BasicPathHandler() {
          super();
      }
  
      @Override
      public void parse(
              final SetCookie cookie, final String value) throws MalformedCookieException {
          Args.notNull(cookie, "Cookie");
          cookie.setPath(!TextUtils.isBlank(value) ? value : "/");
      }
  
      @Override
      public void validate(final Cookie cookie, final CookieOrigin origin)
              throws MalformedCookieException {
      }
  
      static boolean pathMatch(final String uriPath, final String cookiePath) {
          String normalizedCookiePath = cookiePath;
          if (normalizedCookiePath == null) {
              normalizedCookiePath = "/";
          }
          if (normalizedCookiePath.length() > 1 && normalizedCookiePath.endsWith("/")) {
              normalizedCookiePath = normalizedCookiePath.substring(0, normalizedCookiePath.length() - 1);
          }
          if (uriPath.startsWith(normalizedCookiePath)) {
              if (normalizedCookiePath.equals("/")) {
                  return true;
              }
              if (uriPath.length() == normalizedCookiePath.length()) {
                  return true;
              }
              return uriPath.charAt(normalizedCookiePath.length()) == '/';
          }
          return false;
      }
  
      @Override
      public boolean match(final Cookie cookie, final CookieOrigin origin) {
          Args.notNull(cookie, "Cookie");
          Args.notNull(origin, "Cookie origin");
          return pathMatch(origin.getPath(), cookie.getPath());
      }
  
      @Override
      public String getAttributeName() {
          return Cookie.PATH_ATTR;
     }
 
 }