/*
 * Copyright 2013 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.batch.core.jsr.configuration.xml;

import java.io.Serializable;
import java.util.List;
import javax.batch.api.BatchProperty;
import javax.batch.api.chunk.ItemProcessor;
import javax.batch.api.chunk.ItemReader;
import javax.batch.api.chunk.ItemWriter;
import javax.inject.Inject;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.batch.core.ExitStatus;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.JobParametersBuilder;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import static org.junit.Assert.assertEquals;

/**
 * <p>
 * Test cases for JSR-352 job property substitution.
 * </p>
 *
 * TODO: enhance test cases with more complex substitutions
 *
 * @author Chris Schaefer
 * @since 3.0
 */
@ContextConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
public class JobPropertySubstitutionTests {
	@Autowired
	private Job job;

	@Autowired
	private JobLauncher jobLauncher;

	@Test
	public void testPropertySubstitutionSimple() throws Exception {
		JobExecution jobExecution = jobLauncher.run(job,
			new JobParametersBuilder()
				.addString("testParam", "testParamValue")
				.addString("file.name.junit", "myfile2")
				.toJobParameters());
		assertEquals(ExitStatus.COMPLETED, jobExecution.getExitStatus());
	}

	public static final class TestItemReader implements ItemReader {
		private int cnt;

		@Inject
		@BatchProperty
		String readerPropertyName1;

		@Override
		public void open(Serializable serializable) throws Exception {
			assertEquals(System.getProperty("file.separator"), readerPropertyName1);
		}

		@Override
		public void close() throws Exception {
		}

		@Override
		public Object readItem() throws Exception {
			if (cnt == 0) {
				cnt++;
				return "blah";
			}

			return null;
		}

		@Override
		public Serializable checkpointInfo() throws Exception {
			return null;
		}
	}

	public static final class TestItemWriter implements ItemWriter {
		@Inject
		@BatchProperty
		String writerPropertyName1;

		@Override
		public void open(Serializable serializable) throws Exception {
			assertEquals("jobPropertyValue1", writerPropertyName1);
		}

		@Override
		public void close() throws Exception {
		}

		@Override
		public void writeItems(List<Object> objects) throws Exception {
			System.out.println(objects);
		}

		@Override
		public Serializable checkpointInfo() throws Exception {
			return null;
		}
	}

	public static final class TestItemProcessor implements ItemProcessor {
		@Inject
		@BatchProperty
		String processorProperty1;

		@Inject
		@BatchProperty
		String processorProperty2;

		@Inject
		@BatchProperty
		String processorProperty3;

		@Override
		public Object processItem(Object item) throws Exception {
			assertEquals("testParamValue", processorProperty1);
			assertEquals("myfile1.txt", processorProperty2);
			assertEquals(System.getProperty("file.separator") + "myfile2.txt", processorProperty3);

			return item;
		}
	}
}