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/*-
 * #%L
 * Spring Auto REST Docs Core
 * %%
 * Copyright (C) 2015 - 2018 Scalable Capital GmbH
 * %%
 * 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 capital.scalable.restdocs.jackson;

import static capital.scalable.restdocs.OperationAttributeHelper.initRequestPattern;
import static capital.scalable.restdocs.OperationAttributeHelper.setConstraintReader;
import static capital.scalable.restdocs.OperationAttributeHelper.setHandlerMethod;
import static capital.scalable.restdocs.OperationAttributeHelper.setJavadocReader;
import static capital.scalable.restdocs.OperationAttributeHelper.setObjectMapper;

import capital.scalable.restdocs.constraints.ConstraintReaderImpl;
import capital.scalable.restdocs.javadoc.JavadocReaderImpl;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.test.web.servlet.MvcResult;
import org.springframework.test.web.servlet.ResultHandler;
import org.springframework.web.method.HandlerMethod;

public abstract class JacksonResultHandlers {

    public static ResultHandler prepareJackson(ObjectMapper objectMapper) {
        return new JacksonPreparingResultHandler(objectMapper);
    }

    private static class JacksonPreparingResultHandler implements ResultHandler {

        private final ObjectMapper objectMapper;

        public JacksonPreparingResultHandler(ObjectMapper objectMapper) {
            this.objectMapper = objectMapper;
        }

        @Override
        public void handle(MvcResult result) throws Exception {
            // HandlerMethod is not present in case of invalid endpoint
            // or in case of static resource url
            if (result.getHandler() instanceof HandlerMethod) {
                setHandlerMethod(result.getRequest(), (HandlerMethod) result.getHandler());
            }
            setObjectMapper(result.getRequest(), objectMapper);
            initRequestPattern(result.getRequest());
            setJavadocReader(result.getRequest(), JavadocReaderImpl.createWithSystemProperty());
            setConstraintReader(result.getRequest(), ConstraintReaderImpl.create(objectMapper));
        }
    }
}