/*
    * Copyright (c) 2002-2026 Gargoyle Software Inc.
    *
    * Licensed 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
    * https://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.htmlunit.httpclient;
  
  import java.util.Date;
  import java.util.regex.Pattern;
  
  import org.apache.http.cookie.MalformedCookieException;
  import org.apache.http.cookie.SetCookie;
  import org.apache.http.impl.cookie.BasicMaxAgeHandler;
  import org.apache.http.util.Args;
  
  /**
   * Customized BasicMaxAgeHandler for HtmlUnit.
   *
   * @author Ronald Brill
   * @author Lai Quang Duong
   */
  final class HtmlUnitMaxAgeHandler extends BasicMaxAgeHandler {
  
      // Max-Age should be 400 days at most
      // https://httpwg.org/http-extensions/draft-ietf-httpbis-rfc6265bis.html#section-5.5
      private static final int MAX_MAX_AGE = 400 * 24 * 60 * 60;
  
      private static final Pattern MAX_AGE_PATTERN = Pattern.compile("-?[0-9]+");
  
      @Override
      public void parse(final SetCookie cookie, final String value)
              throws MalformedCookieException {
          Args.notNull(cookie, "Cookie");
          if (value == null || value.isEmpty()) {
              throw new MalformedCookieException("Missing value for 'max-age' attribute");
          }
          if (!MAX_AGE_PATTERN.matcher(value).matches()) {
              throw new MalformedCookieException("Invalid 'max-age' attribute: " + value);
          }
          if (value.startsWith("-")) {
              cookie.setExpiryDate(new Date(0L));
              return;
          }
          int age;
          try {
              age = Math.min(Integer.parseInt(value), MAX_MAX_AGE);
          }
          catch (final NumberFormatException e) {
              age = MAX_MAX_AGE;
          }
          cookie.setExpiryDate(new Date(System.currentTimeMillis() + age * 1000L));
      }
  
  }