/*
    * 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.ObjectData;
  import org.apache.chemistry.opencmis.commons.exceptions.CmisRuntimeException;
  import static org.apache.chemistry.opencmis.commons.impl.Constants.PARAM_FILTER;
  import static org.apache.chemistry.opencmis.commons.impl.Constants.PARAM_POLICY_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.JSONArray;
  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.impl.browser.BrowserBindingUtils.getSimpleObject;
  import static org.apache.chemistry.opencmis.server.impl.browser.BrowserBindingUtils.writeJSON;
  import static org.apache.chemistry.opencmis.server.shared.HttpUtils.getStringParameter;
  
  import java.util.List;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  
  /**
   * Policy Service operations.
   */
  public class PolicyService
  {
      /**
       * getAppliedPolicies.
       */
      public static void getAppliedPolicies( CallContext context, CmisService service, String repositoryId,
          HttpServletRequest request, HttpServletResponse response )
          throws Exception
      {
          // get parameters
          String objectId = (String) context.get( CONTEXT_OBJECT_ID );
          String filter = getStringParameter( request, PARAM_FILTER );
  
          // execute
          List<ObjectData> policies = service.getAppliedPolicies( repositoryId, objectId, filter, null );
  
          JSONArray jsonPolicies = new JSONArray(  );
  
          if ( policies != null )
          {
              TypeCache typeCache = new TypeCacheImpl( repositoryId, service );
  
              for ( ObjectData policy : policies )
              {
                  jsonPolicies.add( JSONConverter.convert( policy, typeCache, false ) );
              }
          }
  
          response.setStatus( HttpServletResponse.SC_OK );
          writeJSON( jsonPolicies, request, response );
      }
  
      /**
       * applyPolicy.
       */
      public static void applyPolicy( CallContext context, CmisService service, String repositoryId,
          HttpServletRequest request, HttpServletResponse response )
          throws Exception
      {
          // get parameters
          String objectId = (String) context.get( CONTEXT_OBJECT_ID );
          String policyId = getStringParameter( request, PARAM_POLICY_ID );
  
          // execute
          service.applyPolicy( repositoryId, policyId, objectId, null );
  
          ObjectData object = getSimpleObject( service, repositoryId, objectId );
  
          if ( object == null )
          {
              throw new CmisRuntimeException( "Object is null!" );
          }
  
          // return object
         response.setStatus( HttpServletResponse.SC_OK );
 
         TypeCache typeCache = new TypeCacheImpl( repositoryId, service );
         JSONObject jsonObject = JSONConverter.convert( object, typeCache, false );
 
         writeJSON( jsonObject, request, response );
     }
 
     /**
      * removePolicy.
      */
     public static void removePolicy( CallContext context, CmisService service, String repositoryId,
         HttpServletRequest request, HttpServletResponse response )
         throws Exception
     {
         // get parameters
         String objectId = (String) context.get( CONTEXT_OBJECT_ID );
         String policyId = getStringParameter( request, PARAM_POLICY_ID );
 
         // execute
         service.removePolicy( repositoryId, policyId, objectId, null );
 
         ObjectData object = getSimpleObject( service, repositoryId, objectId );
 
         if ( object == null )
         {
             throw new CmisRuntimeException( "Object is null!" );
         }
 
         // return object
         response.setStatus( HttpServletResponse.SC_OK );
 
         TypeCache typeCache = new TypeCacheImpl( repositoryId, service );
         JSONObject jsonObject = JSONConverter.convert( object, typeCache, false );
 
         writeJSON( jsonObject, request, response );
     }
 }