/*
 * Copyright 2017 Graz University of Technology EAAF-Core Components has been developed in a
 * cooperation between EGIZ, A-SIT Plus, A-SIT, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.2 or - as soon they will be approved by the European
 * Commission - subsequent versions of the EUPL (the "Licence"); You may not use this work except in
 * compliance with the Licence. You may obtain a copy of the Licence at:
 * https://joinup.ec.europa.eu/news/understanding-eupl-v12
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the Licence
 * is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the Licence for the specific language governing permissions and limitations under
 * the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text file for details on the
 * various modules and licenses. The "NOTICE" text file is part of the distribution. Any derivative
 * works that you distribute must include a readable copy of the "NOTICE" text file.
 */

package at.gv.egiz.eaaf.core.impl.utils;

import javax.servlet.http.HttpServletRequest;

public class ServletUtils {

  /**
   * Get Context URL from http request.
   *
   * @param request http Request
   * @return Context URL
   */
  public static String getBaseUrl(final HttpServletRequest request) {
    if (request.getServerPort() == 80 || request.getServerPort() == 443) {
      return request.getScheme() + "://" + request.getServerName() + request.getContextPath();
    } else {
      return request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()
          + request.getContextPath();
    }
  }

}