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/*-
 * ============LICENSE_START=======================================================
 * ONAP - SO
 * ================================================================================
 * Copyright (C) 2017 - 2018 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 */

package org.onap.so;

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;

import org.onap.so.bpmn.common.WorkflowTestTransformer;
import org.springframework.cloud.contract.wiremock.WireMockConfigurationCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;

import com.github.tomakehurst.wiremock.core.WireMockConfiguration;
import com.github.tomakehurst.wiremock.extension.ResponseTransformer;

@Configuration
@Profile({"test"})
public class TestApplicationConfig {
	
	@Bean
	protected ResponseTransformer[] transformerArray() {
		// Process WorkflowTestTransformer annotations
		List<ResponseTransformer> transformerList = new ArrayList<ResponseTransformer>();

		for (Field field : getClass().getFields()) {
			WorkflowTestTransformer annotation = field.getAnnotation(WorkflowTestTransformer.class);

			if (annotation == null) {
				continue;
			}

			if (!Modifier.isStatic(field.getModifiers())) {
				throw new RuntimeException(field.getDeclaringClass().getName()
					+ "#" + field.getName() + " has a @WorkflowTestTransformer "
					+ " annotation but it is not declared static");
			}

			ResponseTransformer transformer;

			try {
				transformer = (ResponseTransformer) field.get(null);
			} catch (IllegalAccessException e) {
				throw new RuntimeException(field.getDeclaringClass().getName()
					+ "#" + field.getName() + " is not accessible", e);
			} catch (ClassCastException e) {
				throw new RuntimeException(field.getDeclaringClass().getName()
					+ "#" + field.getName() + " is not a ResponseTransformer", e);
			}

			if (transformer == null) {
				continue;
			}

			transformerList.add(transformer);
		}

		ResponseTransformer[] transformerArray =
			transformerList.toArray(new ResponseTransformer[transformerList.size()]);

		optionsCustomizer(transformerArray);
		
		return transformerArray;
	}
	
	@Bean
	WireMockConfigurationCustomizer optionsCustomizer(ResponseTransformer[] transformerArray) {
		return new WireMockConfigurationCustomizer() {
			@Override
			public void customize(WireMockConfiguration options) {
				options.extensions(transformerArray);
			}
		};
	}
	
}