/*******************************************************************************
 * Copyright (c) 2010 SAP AG.
 * 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:
 *    Emil Simeonov - initial API and implementation.
 *    Dimitar Donchev - initial API and implementation.
 *    Dimitar Tenev - initial API and implementation.
 *    Nevena Manova - initial API and implementation.
 *    Georgi Konstantinov - initial API and implementation.
 *******************************************************************************/
package org.eclipse.wst.sse.sieditor.model.validation.constraints.http;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.validation.IValidationContext;
import org.eclipse.emf.validation.model.ConstraintStatus;
import org.eclipse.wst.wsdl.Binding;
import org.eclipse.wst.wsdl.BindingOperation;
import org.eclipse.wst.wsdl.ExtensibilityElement;
import org.eclipse.wst.wsdl.WSDLElement;
import org.eclipse.wst.wsdl.binding.http.HTTPBinding;
import org.eclipse.wst.wsdl.binding.http.HTTPOperation;

import org.eclipse.wst.sse.sieditor.model.i18n.Messages;
import org.eclipse.wst.sse.sieditor.model.validation.constraints.AbstractConstraint;

public class OperationBinding extends AbstractConstraint{

	@SuppressWarnings("unchecked")
	@Override
	protected IStatus doValidate(IValidationContext ctx) {
		HTTPOperation operation = (HTTPOperation) ctx.getTarget();
		
		Binding binding = getBinding(operation);
		if (binding != null) {
			EList<ExtensibilityElement> extensibilityElements = binding.getEExtensibilityElements();
			for (ExtensibilityElement extensibilityElement : extensibilityElements) {
				if (extensibilityElement instanceof HTTPBinding) {
					return ConstraintStatus.createSuccessStatus(ctx, operation, null);
				}
			}
			
			return ConstraintStatus.createStatus(ctx, operation, null, Messages.HTTPOperationBinding_0, binding.getQName().getLocalPart());
		}
		return ConstraintStatus.createSuccessStatus(ctx, operation, null);
	}

	@Override
	protected boolean shouldExecute(IValidationContext ctx) {
		return true;
	}
	
	public Binding getBinding(HTTPOperation operation) {
		WSDLElement container = operation.getContainer();
		if (container != null && container instanceof BindingOperation) {
			container = container.getContainer();
			if (container != null && container instanceof Binding) {
				return (Binding) container;
			}
		}
		return null;
	}

}