/**
 * <copyright>
 *
 * Copyright (c) 2013, 2014 Willink Transformations and others.
 * 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:
 *     E.D.Willink - initial API and implementation
 *
 * </copyright>
 */
package org.eclipse.ocl.examples.build.utilities;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.apache.log4j.Logger;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.ENamedElement;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.emf.mwe.core.WorkflowContext;
import org.eclipse.emf.mwe.core.issues.Issues;
import org.eclipse.emf.mwe.core.lib.WorkflowComponentWithModelSlot;
import org.eclipse.emf.mwe.core.monitor.ProgressMonitor;
import org.eclipse.jdt.annotation.NonNull;

/**
 * Changes the NsURI in an Ecore <tt>modelSlot</tt> by
 * <br> alphabeticizing packages/classifiers/attributes/operations/constraints
 * <br> eliminating comments.
 */
public class SetNsURI extends WorkflowComponentWithModelSlot
{
	private Logger log = Logger.getLogger(getClass());	
	private ResourceSet resourceSet = null;	
	private String nsURI = null;	

	public @NonNull ResourceSet getResourceSet() {
		ResourceSet resourceSet2 = resourceSet;
		if (resourceSet2 == null) {
			resourceSet = resourceSet2 = new ResourceSetImpl();
		}
		return resourceSet2;
	}

	@Override
	public void invokeInternal(WorkflowContext ctx, ProgressMonitor arg1, Issues arg2) {
		Resource oldResource = (Resource) ctx.get(getModelSlot());
		log.info("Setting '" + oldResource.getURI() + "' to '" + nsURI + "'");
		for (EObject eObject : oldResource.getContents()) {
			if (eObject instanceof EPackage) {
				((EPackage)eObject).setNsURI(nsURI);
				break;
			}
		}
///		ctx.set(getModelSlot(), newResource);
	}

	protected <@NonNull T extends ENamedElement> void sortList(List<T> list) {
		List<T> newList = new ArrayList<T>(list);
		Collections.sort(newList, new Comparator<T>()
		{
			public int compare(T o1, T o2) {
				EClass e1 = o1.eClass();
				EClass e2 = o2.eClass();
				if (e1 != e2) {
					if (EcorePackage.Literals.EATTRIBUTE.isSuperTypeOf(e1)) {
						return -1;
					}
					else if (EcorePackage.Literals.EATTRIBUTE.isSuperTypeOf(e2)) {
						return 1;
					}
					if (EcorePackage.Literals.EDATA_TYPE.isSuperTypeOf(e1)) {
						return -1;
					}
					else if (EcorePackage.Literals.EDATA_TYPE.isSuperTypeOf(e2)) {
						return 1;
					}
					if (EcorePackage.Literals.EENUM.isSuperTypeOf(e1)) {
						return -1;
					}
					else if (EcorePackage.Literals.EENUM.isSuperTypeOf(e2)) {
						return 1;
					}
					if (EcorePackage.Literals.ECLASS.isSuperTypeOf(e1)) {
						return -1;
					}
					else if (EcorePackage.Literals.ECLASS.isSuperTypeOf(e2)) {
						return 1;
					}
				}
				String n1 = o1.getName();
				String n2 = o2.getName();
				return n1.compareTo(n2);
			}
		});
		list.clear();
		list.addAll(newList);
	}
	
	public void setNsURI(@NonNull String nsURI) {
		this.nsURI = nsURI;
	}
	
	public void setResourceSet(@NonNull ResourceSet resourceSet) {
		this.resourceSet = resourceSet;
	}
}