/*
 * Copyright 2002-2014 the original author or 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 org.springframework.integration.transformer;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;

import java.util.HashMap;
import java.util.Map;

import org.junit.Test;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.context.support.StaticApplicationContext;
import org.springframework.core.convert.converter.Converter;
import org.springframework.core.convert.converter.ConverterRegistry;
import org.springframework.integration.support.MessageBuilder;
import org.springframework.integration.support.utils.IntegrationUtils;
import org.springframework.integration.test.util.TestUtils;
import org.springframework.messaging.Message;


/**
 * @author Oleg Zhurakousky
 * @author Gunnar Hillert
 * @author Artem Bilan
 * @since 2.0
 */
public class MapToObjectTransformerTests {

	@Test
	public void testMapToObjectTransformation() {
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("fname", "Justin");
		map.put("lname", "Case");
		Address address = new Address();
		address.setStreet("1123 Main st");
		map.put("address", address);

		Message<?> message = MessageBuilder.withPayload(map).build();

		MapToObjectTransformer transformer = new MapToObjectTransformer(Person.class);
		transformer.setBeanFactory(this.getBeanFactory());
		Message<?> newMessage = transformer.transform(message);
		Person person = (Person) newMessage.getPayload();
		assertNotNull(person);
		assertEquals("Justin", person.getFname());
		assertEquals("Case", person.getLname());
		assertNull(person.getSsn());
		assertNotNull(person.getAddress());
		assertEquals("1123 Main st", person.getAddress().getStreet());
	}

	@Test
	public void testMapToObjectTransformationWithPrototype() {
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("fname", "Justin");
		map.put("lname", "Case");
		Address address = new Address();
		address.setStreet("1123 Main st");
		map.put("address", address);

		Message<?> message = MessageBuilder.withPayload(map).build();
		StaticApplicationContext ac = new StaticApplicationContext();
		ac.registerPrototype("person", Person.class);
		MapToObjectTransformer transformer = new MapToObjectTransformer("person");
		transformer.setBeanFactory(ac.getBeanFactory());
		Message<?> newMessage = transformer.transform(message);
		Person person = (Person) newMessage.getPayload();
		assertNotNull(person);
		assertEquals("Justin", person.getFname());
		assertEquals("Case", person.getLname());
		assertNull(person.getSsn());
		assertNotNull(person.getAddress());
		assertEquals("1123 Main st", person.getAddress().getStreet());
		ac.close();
	}

	@Test
	public void testMapToObjectTransformationWithConversionService() {
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("fname", "Justin");
		map.put("lname", "Case");
		map.put("address", "1123 Main st");

		Message<?> message = MessageBuilder.withPayload(map).build();

		MapToObjectTransformer transformer = new MapToObjectTransformer(Person.class);
		BeanFactory beanFactory = this.getBeanFactory();
		ConverterRegistry conversionService =
				beanFactory.getBean(IntegrationUtils.INTEGRATION_CONVERSION_SERVICE_BEAN_NAME, ConverterRegistry.class);
		conversionService.addConverter(new StringToAddressConverter());
		transformer.setBeanFactory(beanFactory);

		Message<?> newMessage = transformer.transform(message);
		Person person = (Person) newMessage.getPayload();
		assertNotNull(person);
		assertEquals("Justin", person.getFname());
		assertEquals("Case", person.getLname());
		assertNotNull(person.getAddress());
		assertEquals("1123 Main st", person.getAddress().getStreet());
	}

	private BeanFactory getBeanFactory() {
		GenericApplicationContext ctx = TestUtils.createTestApplicationContext();
		ctx.registerBeanDefinition(IntegrationUtils.INTEGRATION_CONVERSION_SERVICE_BEAN_NAME,
				new RootBeanDefinition("org.springframework.integration.context.CustomConversionServiceFactoryBean"));
		ctx.refresh();
		return ctx;
	}

	public static class Person {

		private String fname;

		private String lname;

		private String ssn;

		private Address address;

		public String getSsn() {
			return ssn;
		}

		public void setSsn(String ssn) {
			this.ssn = ssn;
		}

		public String getFname() {
			return fname;
		}

		public void setFname(String fname) {
			this.fname = fname;
		}

		public String getLname() {
			return lname;
		}

		public void setLname(String lname) {
			this.lname = lname;
		}

		public Address getAddress() {
			return address;
		}

		public void setAddress(Address address) {
			this.address = address;
		}
	}

	public static class Address {

		private String street;

		public String getStreet() {
			return street;
		}

		public void setStreet(String street) {
			this.street = street;
		}
	}

	public class StringToAddressConverter implements Converter<String, Address> {

		@Override
		public Address convert(String source) {
			Address address = new Address();
			address.setStreet(source);
			return address;
		}
	}
}