/*
 * 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 org.junit.Test;
import org.springframework.batch.core.jsr.AbstractJsrTestCase;

import javax.batch.api.BatchProperty;
import javax.batch.api.chunk.ItemProcessor;
import javax.batch.operations.JobOperator;
import javax.batch.runtime.BatchRuntime;
import javax.batch.runtime.BatchStatus;
import javax.batch.runtime.JobExecution;
import javax.batch.runtime.Metric;
import javax.batch.runtime.StepExecution;
import javax.inject.Inject;
import java.util.List;
import java.util.Properties;

import static org.junit.Assert.assertEquals;

public class ExceptionHandlingParsingTests extends AbstractJsrTestCase {

	@Test
	public void testSkippable() throws Exception {
		JobOperator jobOperator = BatchRuntime.getJobOperator();

		Properties jobParameters = new Properties();
		jobParameters.setProperty("run", "1");
		JobExecution execution1 = runJob("ExceptionHandlingParsingTests-context", jobParameters, 10000l);

		List<StepExecution> stepExecutions = jobOperator.getStepExecutions(execution1.getExecutionId());
		assertEquals(BatchStatus.FAILED, execution1.getBatchStatus());
		assertEquals(1, stepExecutions.size());
		assertEquals(1, getMetric(stepExecutions.get(0), Metric.MetricType.PROCESS_SKIP_COUNT).getValue());

		jobParameters = new Properties();
		jobParameters.setProperty("run", "2");
		JobExecution execution2 = restartJob(execution1.getExecutionId(), jobParameters, 10000l);
		stepExecutions = jobOperator.getStepExecutions(execution2.getExecutionId());
		assertEquals(BatchStatus.FAILED, execution2.getBatchStatus());
		assertEquals(2, stepExecutions.size());

		jobParameters = new Properties();
		jobParameters.setProperty("run", "3");
		JobExecution execution3 = restartJob(execution2.getExecutionId(), jobParameters, 10000l);
		stepExecutions = jobOperator.getStepExecutions(execution3.getExecutionId());
		assertEquals(BatchStatus.COMPLETED, execution3.getBatchStatus());
		assertEquals(2, stepExecutions.size());

		assertEquals(0, getMetric(stepExecutions.get(1), Metric.MetricType.ROLLBACK_COUNT).getValue());

		jobParameters = new Properties();
		jobParameters.setProperty("run", "4");
		JobExecution execution4 = runJob("ExceptionHandlingParsingTests-context", jobParameters, 10000l);
		stepExecutions = jobOperator.getStepExecutions(execution4.getExecutionId());
		assertEquals(BatchStatus.COMPLETED, execution4.getBatchStatus());
		assertEquals(3, stepExecutions.size());
	}

	public static class ProblemProcessor implements ItemProcessor {

		@Inject
		@BatchProperty
		private String runId = "0";

		private boolean hasRetried = false;

		private void throwException(Object item) throws Exception {
			int runId = Integer.parseInt(this.runId);

			if(runId == 1) {
				if(item.equals("One")) {
					throw new Exception("skip me");
				} else if(item.equals("Two")){
					throw new RuntimeException("But don't skip me");
				}
			} else if(runId == 2) {
				if(item.equals("Three") && !hasRetried) {
					hasRetried = true;
					throw new Exception("retry me");
				} else if(item.equals("Four")){
					throw new RuntimeException("But don't retry me");
				}
			} else if(runId == 3) {
				if(item.equals("Five")) {
					throw new Exception("Don't rollback on my account");
				}
			}
		}

		@Override
		public Object processItem(Object item) throws Exception {
			throwException(item);
			return item;
		}
	}
}