/*
    * 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.math.BigInteger;
  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.ExtensionsData;
  import org.apache.chemistry.opencmis.commons.data.ObjectList;
  import org.apache.chemistry.opencmis.commons.enums.IncludeRelationships;
  import org.apache.chemistry.opencmis.commons.impl.Constants;
  import org.apache.chemistry.opencmis.commons.impl.JSONConstants;
  import org.apache.chemistry.opencmis.commons.impl.JSONConverter;
  import org.apache.chemistry.opencmis.commons.impl.TypeCache;
  import org.apache.chemistry.opencmis.commons.impl.UrlBuilder;
  import org.apache.chemistry.opencmis.commons.spi.DiscoveryService;
  import org.apache.chemistry.opencmis.commons.spi.Holder;
  
  /**
   * Discovery Service Browser Binding client.
   */
  public class DiscoveryServiceImpl extends AbstractBrowserBindingService implements DiscoveryService {
  
      /**
       * Constructor.
       */
      public DiscoveryServiceImpl(BindingSession session) {
          setSession(session);
      }
  
      @Override
      public ObjectList query(String repositoryId, String statement, Boolean searchAllVersions,
              Boolean includeAllowableActions, IncludeRelationships includeRelationships, String renditionFilter,
              BigInteger maxItems, BigInteger skipCount, ExtensionsData extension) {
          // build URL
          UrlBuilder url = getRepositoryUrl(repositoryId);
  
          // prepare form data
          final FormDataWriter formData = new FormDataWriter(Constants.CMISACTION_QUERY);
          formData.addParameter(Constants.PARAM_STATEMENT, statement);
          formData.addParameter(Constants.PARAM_SEARCH_ALL_VERSIONS, searchAllVersions);
          formData.addParameter(Constants.PARAM_ALLOWABLE_ACTIONS, includeAllowableActions);
          formData.addParameter(Constants.PARAM_RELATIONSHIPS, includeRelationships);
          formData.addParameter(Constants.PARAM_RENDITION_FILTER, renditionFilter);
          formData.addParameter(Constants.PARAM_MAX_ITEMS, maxItems);
          formData.addParameter(Constants.PARAM_SKIP_COUNT, skipCount);
          formData.addParameter(Constants.PARAM_DATETIME_FORMAT, getDateTimeFormatParameter());
          // Important: No succinct flag here!!!
  
          // send and parse
          Response resp = post(url, formData.getContentType(), new Output() {
              @Override
              public void write(OutputStream out) throws IOException {
                  formData.write(out);
              }
          });
  
          TypeCache typeCache = new ClientTypeCacheImpl(repositoryId, this);
  
          Map<String, Object> json = parseObject(resp.getStream(), resp.getCharset());
          return JSONConverter.convertObjectList(json, typeCache, true);
      }
  
      @Override
      public ObjectList getContentChanges(String repositoryId, Holder<String> changeLogToken, Boolean includeProperties,
              String filter, Boolean includePolicyIds, Boolean includeAcl, BigInteger maxItems, ExtensionsData extension) {
          // build URL
          UrlBuilder url = getRepositoryUrl(repositoryId, Constants.SELECTOR_CONTENT_CHANGES);
          url.addParameter(Constants.PARAM_CHANGE_LOG_TOKEN, changeLogToken == null ? null : changeLogToken.getValue());
          url.addParameter(Constants.PARAM_PROPERTIES, includeProperties);
          url.addParameter(Constants.PARAM_FILTER, filter);
          url.addParameter(Constants.PARAM_POLICY_IDS, includePolicyIds);
          url.addParameter(Constants.PARAM_ACL, includeAcl);
          url.addParameter(Constants.PARAM_MAX_ITEMS, maxItems);
          url.addParameter(Constants.PARAM_SUCCINCT, getSuccinctParameter());
  
          // read and parse
          Response resp = read(url);
         Map<String, Object> json = parseObject(resp.getStream(), resp.getCharset());
 
         if (changeLogToken != null && json != null) {
             Object token = json.get(JSONConstants.JSON_OBJECTLIST_CHANGE_LOG_TOKEN);
             if (token instanceof String) {
                 changeLogToken.setValue((String) token);
             }
         }
 
         TypeCache typeCache = new ClientTypeCacheImpl(repositoryId, this);
 
         return JSONConverter.convertObjectList(json, typeCache, false);
     }
 }