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/*
 * Copyright 2012-2023 The Feign Authors
 *
 * 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 feign.jackson.jaxb;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.jaxrs.json.JacksonJaxbJsonProvider;
import java.io.IOException;
import java.lang.reflect.Type;
import feign.FeignException;
import feign.Response;
import feign.Util;
import feign.codec.Decoder;
import static com.fasterxml.jackson.jaxrs.json.JacksonJaxbJsonProvider.DEFAULT_ANNOTATIONS;
import static javax.ws.rs.core.MediaType.APPLICATION_JSON_TYPE;

public final class JacksonJaxbJsonDecoder implements Decoder {
  private final JacksonJaxbJsonProvider jacksonJaxbJsonProvider;

  public JacksonJaxbJsonDecoder() {
    this.jacksonJaxbJsonProvider = new JacksonJaxbJsonProvider();
  }

  public JacksonJaxbJsonDecoder(ObjectMapper objectMapper) {
    this.jacksonJaxbJsonProvider = new JacksonJaxbJsonProvider(objectMapper, DEFAULT_ANNOTATIONS);
  }

  @Override
  public Object decode(Response response, Type type) throws IOException, FeignException {
    if (response.status() == 404 || response.status() == 204)
      return Util.emptyValueOf(type);
    if (response.body() == null)
      return null;
    return jacksonJaxbJsonProvider.readFrom(Object.class, type, null, APPLICATION_JSON_TYPE, null,
        response.body().asInputStream());
  }
}