/*

  * 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.johnzon.jaxrs;

 import org.apache.johnzon.mapper.Mapper;

 import org.apache.johnzon.mapper.MapperBuilder;

 import javax.json.JsonStructure;

 import javax.ws.rs.Consumes;

 import javax.ws.rs.core.MediaType;

 import javax.ws.rs.core.MultivaluedMap;

 import javax.ws.rs.core.Response;

 import javax.ws.rs.ext.MessageBodyReader;

 import javax.ws.rs.ext.Provider;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.Reader;

 import java.lang.annotation.Annotation;

 import java.lang.reflect.ParameterizedType;

 import java.lang.reflect.Type;

 import java.util.Collection;

 import static javax.ws.rs.core.MediaType.WILDCARD;

 import static org.apache.johnzon.jaxrs.Jsons.isJson;

 @Provider

 @Consumes(WILDCARD)

 public class JohnzonMessageBodyReader<T> extends IgnorableTypes implements MessageBodyReader<T> {

     private final Mapper mapper;

     public JohnzonMessageBodyReader() {

         this(new MapperBuilder().setDoCloseOnStreams(false).build(), null);

     }

     public JohnzonMessageBodyReader(final Mapper mapper, final Collection<String> ignoredTypes) {

         super(ignoredTypes);

         this.mapper = mapper;

     }

     @Override

     public boolean isReadable(final Class<?> rawType, final Type genericType,

                               final Annotation[] annotations, final MediaType mediaType) {

         return isJson(mediaType)

                 && !isIgnored(rawType)

                 && InputStream.class != rawType && Reader.class != rawType && Response.class != rawType

                 && String.class != rawType

                 && !JsonStructure.class.isAssignableFrom(rawType);

     }

     @Override

     public T readFrom(final Class<T> rawType, final Type genericType,

                       final Annotation[] annotations, final MediaType mediaType,

                       final MultivaluedMap<String, String> httpHeaders,

                       final InputStream entityStream) throws IOException {

         if (rawType.isArray()) {

             return (T) mapper.readArray(entityStream, rawType.getComponentType());

         } else if (Collection.class.isAssignableFrom(rawType) && ParameterizedType.class.isInstance(genericType)) {

             return (T) mapper.readCollection(entityStream, ParameterizedType.class.cast(genericType));

         }

         return mapper.readObject(entityStream, genericType);

     }

 }