 /**
 ********************************************************************************
 * Copyright (c) 2018, 2020 Robert Bosch GmbH.
 * 
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 * 
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *     Robert Bosch GmbH - initial API and implementation
 ********************************************************************************
 */

package configuration;

import java.util.Properties;

import org.eclipse.app4mc.amalthea.model.AmaltheaFactory;
import org.eclipse.app4mc.transformation.extensions.ICustomObjectsStore;
import org.eclipse.app4mc.transformation.extensions.executiontype.IModelToTextConfig;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;
import org.slf4j.Logger;

import model.loader.AmaltheaMultiFileLoader;
@Component(
	    property= {
	        "transformation=Amalthea2Text"
	    },
	    service=IModelToTextConfig.class
	)
public class M2TTransformationConfig implements IModelToTextConfig {

	@Reference
	  private ICustomObjectsStore customObjsStore;

	
	@Reference
	private AmaltheaMultiFileLoader amaltheaMultiFileLoader;


	@Override
	public ResourceSet getInputResourceSet() {

		Properties properties = customObjsStore.getInstance(Properties.class);

		Logger logger = customObjsStore.getInstance(Logger.class);
		
		if (properties != null) {

			String folderPath = properties.getProperty("input_models_folder");

			if (folderPath != null) {

				ResourceSet resourceSet = amaltheaMultiFileLoader.loadMultipleFiles(folderPath);

				if(resourceSet.getResources().size()==0) {
					logger.error("no Amalthea model files are loaded. Verify if the model version is : " + AmaltheaFactory.eINSTANCE.createAmalthea().getVersion());
				}
				
				return resourceSet;
			} else {
				logger.error("input_models_folder parameter not set",
						new NullPointerException("input_models_folder property not set"));
			}

		} else {
			logger.error("Parameters object not set ", new NullPointerException("Parameter object is null"));
		}
		return null;
	}

 
}