/**
 * Copyright 2013 International Business Machines Corp.
 *
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership. 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 com.ibm.jbatch.container.cdi;

import java.util.List;

import javax.batch.api.BatchProperty;
import javax.batch.runtime.context.JobContext;
import javax.batch.runtime.context.StepContext;
import javax.enterprise.context.Dependent;
import javax.enterprise.inject.Produces;
import javax.enterprise.inject.spi.InjectionPoint;

import com.ibm.jbatch.container.artifact.proxy.ProxyFactory;
import com.ibm.jbatch.container.util.DependencyInjectionUtility;
import com.ibm.jbatch.jsl.model.Property;

public class BatchProducerBean {

	@Produces
	@Dependent
	@BatchProperty
	public String produceProperty(InjectionPoint injectionPoint) {

		//Seems like this is a CDI bug where null injection points are getting passed in. 
		//We should be able to ignore these as a workaround.
		if (injectionPoint != null) {
			if (ProxyFactory.getInjectionReferences() == null) {
				return null;
			}

			BatchProperty batchPropAnnotation = injectionPoint.getAnnotated().getAnnotation(BatchProperty.class);

			// If a name is not supplied the batch property name defaults to
			// the field name
			String batchPropName;
			if (batchPropAnnotation.name().equals("")) {
				batchPropName = injectionPoint.getMember().getName();
			} else {
				batchPropName = batchPropAnnotation.name();
			}

			List<Property> propList = ProxyFactory.getInjectionReferences().getProps();

			return DependencyInjectionUtility.getPropertyValue(propList, batchPropName);
		}
		return null;
	}

	@Produces
	@Dependent
	public JobContext getJobContext() {
		if (ProxyFactory.getInjectionReferences() != null) {
			return ProxyFactory.getInjectionReferences().getJobContext();
		} else {
			return null;
		}
	}

	@Produces
	@Dependent
	public StepContext getStepContext() {
		if (ProxyFactory.getInjectionReferences() != null) {
			return ProxyFactory.getInjectionReferences().getStepContext();
		} else {
			return null;
		}
	}
}