/*
    * 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.
   */
  package org.apache.chemistry.opencmis.client.bindings.spi.browser;
  
  import java.io.IOException;
  import java.io.OutputStream;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.chemistry.opencmis.client.bindings.spi.BindingSession;
  import org.apache.chemistry.opencmis.client.bindings.spi.http.Output;
  import org.apache.chemistry.opencmis.client.bindings.spi.http.Response;
  import org.apache.chemistry.opencmis.commons.data.Ace;
  import org.apache.chemistry.opencmis.commons.data.Acl;
  import org.apache.chemistry.opencmis.commons.data.ExtensionsData;
  import org.apache.chemistry.opencmis.commons.enums.AclPropagation;
  import org.apache.chemistry.opencmis.commons.impl.Constants;
  import org.apache.chemistry.opencmis.commons.impl.JSONConverter;
  import org.apache.chemistry.opencmis.commons.impl.UrlBuilder;
  import org.apache.chemistry.opencmis.commons.impl.dataobjects.AccessControlListImpl;
  import org.apache.chemistry.opencmis.commons.spi.AclService;
  import org.apache.chemistry.opencmis.commons.spi.ExtendedAclService;
  
  /**
   * ACL Service Browser Binding client.
   */
  public class AclServiceImpl extends AbstractBrowserBindingService implements AclService, ExtendedAclService {
  
      /**
       * Constructor.
       */
      public AclServiceImpl(BindingSession session) {
          setSession(session);
      }
  
      @Override
      public Acl getAcl(String repositoryId, String objectId, Boolean onlyBasicPermissions, ExtensionsData extension) {
          // build URL
          UrlBuilder url = getObjectUrl(repositoryId, objectId, Constants.SELECTOR_ACL);
          url.addParameter(Constants.PARAM_ONLY_BASIC_PERMISSIONS, onlyBasicPermissions);
  
          // read and parse
          Response resp = read(url);
          Map<String, Object> json = parseObject(resp.getStream(), resp.getCharset());
  
          return JSONConverter.convertAcl(json);
      }
  
      @Override
      public Acl applyAcl(String repositoryId, String objectId, Acl addAces, Acl removeAces,
              AclPropagation aclPropagation, ExtensionsData extension) {
          // build URL
          UrlBuilder url = getObjectUrl(repositoryId, objectId);
  
          // prepare form data
          final FormDataWriter formData = new FormDataWriter(Constants.CMISACTION_APPLY_ACL);
          formData.addAddAcesParameters(addAces);
          formData.addRemoveAcesParameters(removeAces);
          formData.addParameter(Constants.PARAM_ACL_PROPAGATION, aclPropagation);
  
          // send and parse
          Response resp = post(url, formData.getContentType(), new Output() {
              @Override
              public void write(OutputStream out) throws IOException {
                  formData.write(out);
              }
          });
          Map<String, Object> json = parseObject(resp.getStream(), resp.getCharset());
  
          return JSONConverter.convertAcl(json);
      }
  
      @Override
      public Acl setAcl(String repositoryId, String objectId, Acl aces) {
          Acl currentAcl = getAcl(repositoryId, objectId, false, null);
  
          List<Ace> removeAces = new ArrayList<Ace>();
          if (currentAcl.getAces() != null) {
              for (Ace ace : currentAcl.getAces()) {
                  if (ace.isDirect()) {
                      removeAces.add(ace);
                  }
             }
         }
 
         return applyAcl(repositoryId, objectId, aces, new AccessControlListImpl(removeAces), AclPropagation.OBJECTONLY,
                 null);
     }
 }