/**
 *                                                                            
 * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 *                                                                            
 * 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:   
 * Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation 
 */
package org.eclipse.osbp.xtext.basic.validation;

import java.util.Arrays;
import java.util.List;

import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.resource.IResourceDescription;
import org.eclipse.xtext.resource.IResourceServiceProvider;
import org.eclipse.xtext.util.CancelIndicator;

import com.google.inject.Inject;

import org.eclipse.xtext.common.types.JvmAnnotationTarget;
import org.eclipse.xtext.common.types.JvmExecutable;
import org.eclipse.xtext.common.types.JvmIdentifiableElement;
import org.eclipse.xtext.common.types.JvmMember;
import org.eclipse.xtext.common.types.JvmTypeParameterDeclarator;

public class NamesAreUniqueValidator extends org.eclipse.xtext.validation.NamesAreUniqueValidator implements INamesAreUniqueValidationClassComparator {

	@Inject
	private IResourceServiceProvider.Registry resourceServiceProviderRegistry = IResourceServiceProvider.Registry.INSTANCE;

	// !!! vvv
	/** use our own helper */
	private INamesAreUniqueValidationHelper helper = new NamesAreUniqueValidationHelper(this);
	// ^^^ !!!

	@Override
	public void doCheckUniqueNames(Resource resource, CancelIndicator cancelIndicator) {
		final IResourceServiceProvider resourceServiceProvider = resourceServiceProviderRegistry.getResourceServiceProvider(resource.getURI());
		if (resourceServiceProvider==null)
			return;
		IResourceDescription.Manager manager = resourceServiceProvider.getResourceDescriptionManager();
		if (manager != null) {
			IResourceDescription description = manager.getResourceDescription(resource);
			if (description != null) {
				Iterable<IEObjectDescription> descriptions = description.getExportedObjects();
				helper.checkUniqueNames(descriptions, cancelIndicator, this);
			}
		}
	}

//	private final static List<Class<?>> ingoreClasses = Arrays.asList(
//		JvmIdentifiableElement.class,
//		JvmAnnotationTarget.class,
//		JvmMember.class,
//		JvmExecutable.class,
//		JvmTypeParameterDeclarator.class,
//		EObject.class
//	);
	
	protected boolean ignoreClass(EClass eclass) {
//		List<Class<?>> ingoreClassess = Arrays.asList(
//				JvmIdentifiableElement.class,
//				JvmAnnotationTarget.class,
//				JvmMember.class,
//				JvmExecutable.class,
//				JvmTypeParameterDeclarator.class,
//				EObject.class
//			);
//		
//		Class<?> tClass = eclass.getInstanceClass();
//		if	(ingoreClassess.contains(tClass)) {
//			return true;
//		}
		return false;
	}
	
	@Override
	public boolean areOfEqualClass(EObject object1, EObject object2) {
		EClass class1 = object1.eClass();
		EClass class2 = object2.eClass();
		EObject container1 = object1.eContainer();
		EObject container2 = object2.eContainer();
		if	((container1 != null) && (container2 != null) && !container1.equals(container2)) {
			return false;
		}
		if	(class1.isInstance(object2)) {
			return true;
		}
		if	(class2.isInstance(object1)) {
			return true;
		}
		for (EClass super1 : class1.getEAllSuperTypes()) {
			if	(!ignoreClass(super1) && super1.isInstance(object2)) {
				return true;
			}
		}
		for (EClass super2 : class2.getEAllSuperTypes()) {
			if	(!ignoreClass(super2) && super2.isInstance(object1)) {
				return true;
			}
		}
		return false;
	}
}