/*
    * 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.syncope.client.console.resources;
  
  import java.io.IOException;
  import java.nio.charset.StandardCharsets;
  import javax.ws.rs.core.MediaType;
  import org.apache.syncope.client.console.rest.BpmnProcessRestClient;
  import org.apache.syncope.client.ui.commons.annotations.Resource;
  import org.apache.syncope.common.lib.to.BpmnProcess;
  
  /**
   * Mirror REST resource for obtaining BPMN process in JSON (used by Flowable Modeler).
   */
  @Resource(key = "bpmnProcessGET", path = "/bpmnProcessGET")
  public class BpmnProcessGETResource extends AbstractBpmnProcessResource {
  
      private static final long serialVersionUID = 4637304868056148970L;
  
      public BpmnProcessGETResource(final BpmnProcessRestClient bpmnProcessRestClient) {
          super(bpmnProcessRestClient);
      }
  
      @Override
      protected ResourceResponse newResourceResponse(final Attributes attributes) {
          final BpmnProcess toGet = getBpmnProcess(attributes);
  
          ResourceResponse response = new ResourceResponse();
          response.disableCaching();
          response.setContentType(MediaType.APPLICATION_JSON);
          response.setTextEncoding(StandardCharsets.UTF_8.name());
          response.setWriteCallback(new WriteCallback() {
  
              @Override
              public void writeData(final Attributes attributes) throws IOException {
                  writeStream(
                          attributes,
                          bpmnProcessRestClient.getDefinition(MediaType.APPLICATION_JSON_TYPE, toGet.getKey()));
              }
          });
  
          return response;
      }
  }