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/*
 * © 2017 SAP SE or an SAP affiliate company.
 * All rights reserved.
 * Please see http://www.sap.com/corporate-en/legal/copyright/index.epx for additional trademark information and
 * notices.
 */
package com.sap.cloud.yaas.servicesdk.springboot.jersey;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.jaxrs.json.JacksonJaxbJsonProvider;
import org.glassfish.jersey.server.ResourceConfig;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.AutoConfigureBefore;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
import org.springframework.boot.autoconfigure.jersey.JerseyAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.ws.rs.core.Feature;
import javax.ws.rs.core.FeatureContext;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;


/**
 * Registers a {@link Feature} which configures a {@link JacksonJaxbJsonProvider}.
 */
@Configuration
@ConditionalOnWebApplication
@ConditionalOnClass(ResourceConfig.class)
@ConditionalOnMissingBean(ResourceConfig.class)
@AutoConfigureAfter(JacksonAutoConfiguration.class)
@AutoConfigureBefore(JerseyAutoConfiguration.class)
public class JsonFeatureAutoConfiguration
{
	/**
	 * Registers a {@link Feature} which configures a {@link JacksonJaxbJsonProvider}.
	 *
	 * @param jsonMapper the {@link ObjectMapper} that will be used for serialization and deserialization
	 *                   of JSON objects
	 * @return the jackson feature
	 */
	@Bean
	@ConditionalOnBean(ObjectMapper.class)
	@ConditionalOnClass(JacksonJaxbJsonProvider.class)
	@ConditionalOnProperty(prefix = "yaas.service.jersey", name = "enable-json-feature", matchIfMissing = true)
	public Feature jsonFeature(final ObjectMapper jsonMapper)
	{
		return (FeatureContext context) ->
		{
			final JacksonJaxbJsonProvider jsonProvider = new JacksonJaxbJsonProvider(jsonMapper,
					JacksonJaxbJsonProvider.DEFAULT_ANNOTATIONS);

			context.register(jsonProvider, MessageBodyReader.class, MessageBodyWriter.class);

			return true;
		};
	}

}