package org.jboss.resteasy.plugins.providers;

import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Form;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.concurrent.CompletionStage;

import org.jboss.resteasy.resteasy_jaxrs.i18n.LogMessages;
import org.jboss.resteasy.spi.AsyncMessageBodyWriter;
import org.jboss.resteasy.spi.AsyncOutputStream;

Author:
Bill Burke
Version:
$Revision: 1 $/**
 * @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
 * @version $Revision: 1 $
 */
@Provider
@Produces("application/x-www-form-urlencoded")
@Consumes("application/x-www-form-urlencoded")
public class JaxrsFormProvider implements MessageBodyReader<Form>, AsyncMessageBodyWriter<Form>
{
   @Override
   public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
   {
      return Form.class.isAssignableFrom(type);
   }

   @Override
   public Form readFrom(Class<Form> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException, WebApplicationException
   {
      LogMessages.LOGGER.debugf("Provider : %s,  Method : readFrom", getClass().getName());
      @SuppressWarnings(value = "unchecked")
      MultivaluedMap<String, String> map = new FormUrlEncodedProvider().readFrom(null, null, annotations, mediaType, httpHeaders, entityStream);
      return new Form(map);
   }

   @Override
   public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
   {
      return Form.class.isAssignableFrom(type);
   }

   @Override
   public long getSize(Form form, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
   {
      return -1;
   }

   @Override
   public void writeTo(Form form, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException
   {
      LogMessages.LOGGER.debugf("Provider : %s,  Method : writeTo", getClass().getName());
      new FormUrlEncodedProvider().writeTo(form.asMap(), null, null, annotations, mediaType, httpHeaders, entityStream);
   }

   @Override
   public CompletionStage<Void> asyncWriteTo(Form form, Class<?> type, Type genericType, Annotation[] annotations,
                                             MediaType mediaType, MultivaluedMap<String, Object> httpHeaders,
                                             AsyncOutputStream entityStream)
   {
      LogMessages.LOGGER.debugf("Provider : %s,  Method : writeTo", getClass().getName());
      return new FormUrlEncodedProvider().asyncWriteTo(form.asMap(), null, null, annotations, mediaType, httpHeaders, entityStream);
   }
}