/*
    * Copyright 2015 Data Archiving and Networked Services (an institute of
    * Koninklijke Nederlandse Akademie van Wetenschappen), King's College London,
    * Georg-August-Universitaet Goettingen Stiftung Oeffentlichen Rechts
    *
    * Licensed under the EUPL, Version 1.1 or – as soon they will be approved by
    * the European Commission - subsequent versions of the EUPL (the "Licence");
    * You may not use this work except in compliance with the Licence.
    * You may obtain a copy of the Licence at:
   *
   * https://joinup.ec.europa.eu/software/page/eupl
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the Licence is distributed on an "AS IS" basis,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the Licence for the specific language governing
   * permissions and limitations under the Licence.
   */
  
  package eu.ehri.extension.providers;
  
  import eu.ehri.project.importers.ImportLog;
  
  import javax.ws.rs.Consumes;
  import javax.ws.rs.Produces;
  import javax.ws.rs.WebApplicationException;
  import javax.ws.rs.core.MediaType;
  import javax.ws.rs.core.MultivaluedMap;
  import javax.ws.rs.ext.MessageBodyReader;
  import javax.ws.rs.ext.MessageBodyWriter;
  import javax.ws.rs.ext.Provider;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.io.PrintStream;
  import java.lang.annotation.Annotation;
  import java.lang.reflect.Type;
  
  @Provider
  @Consumes(MediaType.APPLICATION_JSON)
  @Produces({MediaType.APPLICATION_JSON, MediaType.TEXT_PLAIN})
  public class ImportLogProvider implements MessageBodyWriter<ImportLog>,
          MessageBodyReader<ImportLog>, JsonMessageBodyHandler {
      @Override
      public boolean isWriteable(Class<?> aClass, Type type, Annotation[] annotations, MediaType mediaType) {
          return aClass == ImportLog.class;
      }
  
      @Override
      public long getSize(ImportLog importLog, Class<?> aClass, Type type, Annotation[] annotations, MediaType mediaType) {
          return -1L;
      }
  
      @Override
      public void writeTo(ImportLog importLog, Class<?> aClass, Type type,
              Annotation[] annotations, MediaType mediaType,
              MultivaluedMap<String, Object> multivaluedMap, OutputStream outputStream)
              throws IOException, WebApplicationException {
          if (mediaType.isCompatible(MediaType.APPLICATION_JSON_TYPE)) {
              mapper.writeValue(outputStream, importLog);
          } else {
              new PrintStream(outputStream).println(importLog);
          }
      }
  
      @Override
      public boolean isReadable(Class<?> aClass, Type type, Annotation[] annotations, MediaType mediaType) {
          return aClass == ImportLog.class;
      }
  
      @Override
      public ImportLog readFrom(Class<ImportLog> aClass, Type type,
              Annotation[] annotations, MediaType mediaType,
              MultivaluedMap<String, String> multivaluedMap, InputStream inputStream)
              throws IOException, WebApplicationException {
          return mapper.readValue(inputStream, ImportLog.class);
      }
  }