/*
    * #%L
    * wcm.io
    * %%
    * Copyright (C) 2015 wcm.io
    * %%
    * 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.
   * #L%
   */
  package io.wcm.caravan.hal.docs.impl.reader;
  
  import io.wcm.caravan.hal.docs.impl.model.Service;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  
  import com.fasterxml.jackson.annotation.JsonAutoDetect;
  import com.fasterxml.jackson.annotation.JsonInclude.Include;
  import com.fasterxml.jackson.databind.ObjectMapper;
  
  /**
   * Manages serialization and deserialization of service JSON files.
   */
  public final class ServiceJson {
  
    private final ObjectMapper objectMapper = new ObjectMapper()
        .setSerializationInclusion(Include.NON_EMPTY);
  
    /**
     * Constructor
     */
    public ServiceJson() {
      // ensure only field serialization is used for jackson
      objectMapper.setVisibilityChecker(objectMapper.getSerializationConfig().getDefaultVisibilityChecker()
          .withFieldVisibility(JsonAutoDetect.Visibility.ANY)
          .withGetterVisibility(JsonAutoDetect.Visibility.NONE)
          .withSetterVisibility(JsonAutoDetect.Visibility.NONE)
          .withCreatorVisibility(JsonAutoDetect.Visibility.NONE));
    }
  
    /**
     * Write model to stream.
     * @param model Model
     * @param os Stream
     * @throws IOException
     */
    public void write(Service model, OutputStream os) throws IOException {
      objectMapper.writerWithDefaultPrettyPrinter().writeValue(os, model);
    }
  
    /**
     * Read model from stream
     * @param is stream
     * @return Model
     * @throws IOException
     */
    public Service read(InputStream is) throws IOException {
      return objectMapper.readValue(is, Service.class);
    }
  
  }