/*
    * 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.server.impl.browser;
  
  import org.apache.chemistry.opencmis.commons.data.ObjectList;
  import org.apache.chemistry.opencmis.commons.enums.RelationshipDirection;
  import org.apache.chemistry.opencmis.commons.exceptions.CmisRuntimeException;
  import static org.apache.chemistry.opencmis.commons.impl.Constants.PARAM_ALLOWABLE_ACTIONS;
  import static org.apache.chemistry.opencmis.commons.impl.Constants.PARAM_MAX_ITEMS;
  import static org.apache.chemistry.opencmis.commons.impl.Constants.PARAM_RELATIONSHIP_DIRECTION;
  import static org.apache.chemistry.opencmis.commons.impl.Constants.PARAM_RENDITION_FILTER;
  import static org.apache.chemistry.opencmis.commons.impl.Constants.PARAM_SKIP_COUNT;
  import static org.apache.chemistry.opencmis.commons.impl.Constants.PARAM_SUB_RELATIONSHIP_TYPES;
  import static org.apache.chemistry.opencmis.commons.impl.Constants.PARAM_TYPE_ID;
  import org.apache.chemistry.opencmis.commons.impl.JSONConverter;
  import org.apache.chemistry.opencmis.commons.impl.TypeCache;
  import org.apache.chemistry.opencmis.commons.impl.json.JSONObject;
  import org.apache.chemistry.opencmis.commons.impl.server.TypeCacheImpl;
  import org.apache.chemistry.opencmis.commons.server.CallContext;
  import org.apache.chemistry.opencmis.commons.server.CmisService;
  import static org.apache.chemistry.opencmis.server.impl.browser.BrowserBindingUtils.CONTEXT_OBJECT_ID;
  import static org.apache.chemistry.opencmis.server.shared.HttpUtils.getBigIntegerParameter;
  import static org.apache.chemistry.opencmis.server.shared.HttpUtils.getBooleanParameter;
  import static org.apache.chemistry.opencmis.server.shared.HttpUtils.getEnumParameter;
  import static org.apache.chemistry.opencmis.server.shared.HttpUtils.getStringParameter;
  
  import java.math.BigInteger;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  
  public class RelationshipService
  {
      /**
       * getObjectRelationships.
       */
      public static void getObjectRelationships( CallContext context, CmisService service, String repositoryId,
          HttpServletRequest request, HttpServletResponse response )
          throws Exception
      {
          // get parameters
          String objectId = (String) context.get( CONTEXT_OBJECT_ID );
          Boolean includeSubRelationshipTypes = getBooleanParameter( request, PARAM_SUB_RELATIONSHIP_TYPES );
          RelationshipDirection relationshipDirection = getEnumParameter( request, PARAM_RELATIONSHIP_DIRECTION,
                  RelationshipDirection.class );
          String typeId = getStringParameter( request, PARAM_TYPE_ID );
          String renditionFilter = getStringParameter( request, PARAM_RENDITION_FILTER );
          Boolean includeAllowableActions = getBooleanParameter( request, PARAM_ALLOWABLE_ACTIONS );
          BigInteger maxItems = getBigIntegerParameter( request, PARAM_MAX_ITEMS );
          BigInteger skipCount = getBigIntegerParameter( request, PARAM_SKIP_COUNT );
  
          // execute
          ObjectList relationships = service.getObjectRelationships( repositoryId, objectId, includeSubRelationshipTypes,
                  relationshipDirection, typeId, renditionFilter, includeAllowableActions, maxItems, skipCount, null );
  
          if ( relationships == null )
          {
              throw new CmisRuntimeException( "Relationships are null!" );
          }
  
          TypeCache typeCache = new TypeCacheImpl( repositoryId, service );
          JSONObject jsonChildren = JSONConverter.convert( relationships, typeCache, false );
  
          response.setStatus( HttpServletResponse.SC_OK );
          BrowserBindingUtils.writeJSON( jsonChildren, request, response );
      }
  }