content: /*
  
      Copyright 2018-2024 Accenture Technology
  
      Licensed 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.platformlambda.rest.serializers;
  
  import org.platformlambda.core.serializers.SimpleMapper;
  import org.platformlambda.core.util.Utility;
  
  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.MessageBodyWriter;
  import javax.ws.rs.ext.Provider;
  import java.io.IOException;
  import java.io.OutputStream;
  import java.lang.annotation.Annotation;
  import java.lang.reflect.Type;
  
  @Provider
  @Produces(MediaType.TEXT_PLAIN)
  public class MessageBodyWriterText<T> implements MessageBodyWriter<T> {
  
      private static final Utility util = Utility.getInstance();
  
      @Override
      public boolean isWriteable(Class<?> cls, Type genericType, Annotation[] annotations, MediaType mediaType) {
          return true;
      }
  
      @Override
      public long getSize(T t, Class<?> cls, Type genericType, Annotation[] annotations, MediaType mediaType) {
          // deprecated and ignored
          return 0;
      }
  
      @Override
      public void writeTo(T t, Class<?> cls, Type genericType, Annotation[] annotations, MediaType mediaType,
                          MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream)
              throws IOException, WebApplicationException {
          if (t instanceof String) {
              entityStream.write(util.getUTF((String) t));
          } else if (t instanceof byte[]) {
              entityStream.write((byte[]) t);
          } else {
              entityStream.write(util.getUTF(SimpleMapper.getInstance().getMapper().writeValueAsString(t)));
          }
  
      }
  }
  