/**
 * Copyright (c) 2009-2010 Thales Corporate Services S.A.S.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 * Thales Corporate Services S.A.S - initial API and implementation
 */
package org.eclipse.egf.emf.wrapper;

import java.util.ArrayList;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.egf.core.domain.EgfResourceSet;
import org.eclipse.egf.core.producer.InvocationException;
import org.eclipse.egf.ftask.producer.context.ITaskProductionContext;
import org.eclipse.egf.ftask.producer.invocation.ITaskProduction;
import org.eclipse.egf.model.domain.EMFDomain;
import org.eclipse.emf.codegen.ecore.generator.Generator;
import org.eclipse.emf.codegen.ecore.genmodel.GenModel;
import org.eclipse.emf.codegen.ecore.genmodel.util.GenModelUtil;
import org.eclipse.emf.common.util.BasicMonitor;
import org.eclipse.emf.common.util.Monitor;
import org.eclipse.emf.ecore.resource.Resource;

public abstract class EgfEmfAbstractTask implements ITaskProduction {

	private Resource _resource;

	private GenModel _genModel;

	public EgfEmfAbstractTask() {
		super();
	}

	public void preExecute(ITaskProductionContext productionContext, IProgressMonitor monitor) throws InvocationException {
		_resource = new EgfResourceSet().getResource(productionContext.getInputValue("genModelURI", EMFDomain.class).getUri(), true); //$NON-NLS-1$
	}

	public void doExecute(ITaskProductionContext productionContext, IProgressMonitor monitor) throws InvocationException {
		// TODO have a look at GeneratorUIUtil
		// TODO handle diagnostics and status
		_genModel = (GenModel) _resource.getContents().get(0);
		_genModel.reconcile();
		_genModel.setCanGenerate(true);
		_genModel.setValidateModel(true);
		_genModel.diagnose();
		_genModel.validate();
		Generator generator = GenModelUtil.createGenerator(_genModel);
		for (String projectType : getProjectTypeList()) {
			Monitor emfMonitor = BasicMonitor.toMonitor(new SubProgressMonitor(monitor, 100));
			generator.generate(_genModel, projectType, emfMonitor);
		}
	}

	public void postExecute(ITaskProductionContext productionContext, IProgressMonitor monitor) throws InvocationException {
		_resource.unload();
	}

	protected abstract ArrayList<String> getProjectTypeList();

}