/**
 * Copyright (c) 2009, 2010 Mia-Software.
 * 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:
 *     Gregoire DUPE (Mia-Software) - initial API and implementation
 */
package org.eclipse.modisco.infra.facet.tests.emf;

import java.io.File;
import java.io.IOException;

import org.eclipse.emf.common.util.Diagnostic;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
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.ecore.util.Diagnostician;
import org.eclipse.emf.ecore.xmi.impl.XMIResourceFactoryImpl;
import org.eclipse.gmt.modisco.infra.facet.Facet;
import org.eclipse.gmt.modisco.infra.facet.FacetFactory;
import org.eclipse.gmt.modisco.infra.facet.FacetPackage;

/**
 * <!-- begin-user-doc -->
 * A sample utility for the '<em><b>facet</b></em>' package.
 * <!-- end-user-doc -->
 * @generated
 */
public class FacetExample {
	/**
	 * <!-- begin-user-doc -->
	 * Load all the argument file paths or URIs as instances of the model.
	 * <!-- end-user-doc -->
	 * @param args the file paths or URIs.
	 * @generated
	 */
	public static void main(String[] args) {
		// Create a resource set to hold the resources.
		//
		ResourceSet resourceSet = new ResourceSetImpl();
		
		// Register the appropriate resource factory to handle all file extensions.
		//
		resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put
			(Resource.Factory.Registry.DEFAULT_EXTENSION, 
			 new XMIResourceFactoryImpl());

		// Register the package to ensure it is available during loading.
		//
		resourceSet.getPackageRegistry().put
			(FacetPackage.eNS_URI, 
			 FacetPackage.eINSTANCE);
        
		// If there are no arguments, emit an appropriate usage message.
		//
		if (args.length == 0) {
			System.out.println("Enter a list of file paths or URIs that have content like this:"); //$NON-NLS-1$
			try {
				Resource resource = resourceSet.createResource(URI.createURI("http:///My.facet")); //$NON-NLS-1$
				Facet root = FacetFactory.eINSTANCE.createFacet();
				resource.getContents().add(root);
				resource.save(System.out, null);
			}
			catch (IOException exception) {
				exception.printStackTrace();
			}
		}
		else {
			// Iterate over all the arguments.
			//
			for (int i = 0; i < args.length; ++i) {
				// Construct the URI for the instance file.
				// The argument is treated as a file path only if it denotes an existing file.
				// Otherwise, it's directly treated as a URL.
				//
				File file = new File(args[i]);
				URI uri = file.isFile() ? URI.createFileURI(file.getAbsolutePath()): URI.createURI(args[0]);

				try {
					// Demand load resource for this file.
					//
					Resource resource = resourceSet.getResource(uri, true);
					System.out.println("Loaded " + uri); //$NON-NLS-1$

					// Validate the contents of the loaded resource.
					//
					for (EObject eObject : resource.getContents()) {
						Diagnostic diagnostic = Diagnostician.INSTANCE.validate(eObject);
						if (diagnostic.getSeverity() != Diagnostic.OK) {
							printDiagnostic(diagnostic, ""); //$NON-NLS-1$
						}
					}
				}
				catch (RuntimeException exception) {
					System.out.println("Problem loading " + uri); //$NON-NLS-1$
					exception.printStackTrace();
				}
			}
		}
	}
	
	/**
	 * <!-- begin-user-doc -->
	 * Prints diagnostics with indentation.
	 * <!-- end-user-doc -->
	 * @param diagnostic the diagnostic to print.
	 * @param indent the indentation for printing.
	 * @generated
	 */
	protected static void printDiagnostic(Diagnostic diagnostic, String indent) {
		System.out.print(indent);
		System.out.println(diagnostic.getMessage());
		for (Diagnostic child : diagnostic.getChildren()) {
			printDiagnostic(child, indent + "  "); //$NON-NLS-1$
		}
	}

} //FacetExample