/*
    * 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
    *
    *     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.gbif.ws.security;
  
  import javax.annotation.Nullable;
  
  public class RequestDataToSign {
  
    // required
    private String method;
  
    // required
    private String url;
  
    // optional (POST or PUT only)
    @Nullable private String contentType;
  
    // optional (POST or PUT only)
    @Nullable private String contentTypeMd5;
  
    // required
    private String user;
  
    public String getMethod() {
      return method;
    }
  
    public void setMethod(String method) {
      this.method = method;
    }
  
    public String getUrl() {
      return url;
    }
  
    public void setUrl(String url) {
      this.url = url;
    }
  
    public String getContentType() {
      return contentType;
    }
  
    public void setContentType(String contentType) {
      this.contentType = contentType;
    }
  
    public String getContentTypeMd5() {
      return contentTypeMd5;
    }
  
    public void setContentTypeMd5(String contentTypeMd5) {
      this.contentTypeMd5 = contentTypeMd5;
    }
  
    public String getUser() {
      return user;
    }
  
    public void setUser(String user) {
      this.user = user;
    }
  
    /**
     * Concatenates the information to be encrypted from a request into a single String. When the
     * server receives an authenticated request, it compares the computed request signature with the
     * signature provided in the request in StringToSign. For that reason this string may only contain
     * information also available in the exact same form to the server.
     *
     * @return unique string for a request
     * @see <a href="http://docs.amazonwebservices.com/AmazonS3/latest/dev/RESTAuthentication.html">AWS
     * Docs</a>
     */
    public String stringToSign() {
      StringBuilder sb = new StringBuilder();
  
      sb.append(method);
      sb.append('\n');
      sb.append(url);
      if (contentType != null) {
        sb.append('\n');
        sb.append(contentType.toLowerCase());
      }
      if (contentTypeMd5 != null) {
        sb.append('\n');
        sb.append(contentTypeMd5);
      }
      sb.append('\n');
     sb.append(user);
 
     return sb.toString();
   }
 }