/**
 * Copyright (c) 2013 itemis AG 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:
 *   itemis AG - initial API and implementation
 */
package org.eclipse.rmf.tests.serialization.util;

import static org.junit.Assert.assertSame;

import java.io.BufferedInputStream;
import java.io.InputStream;
import java.util.Map;

import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.URIConverter;
import org.eclipse.emf.ecore.resource.impl.ResourceFactoryImpl;
import org.eclipse.emf.ecore.xmi.XMLResource;
import org.eclipse.sphinx.emf.serialization.XMLPersistenceMappingResourceSetImpl;
import org.junit.Before;

@SuppressWarnings("nls")
public abstract class AbstractTestCase {

	@Before
	public void setUp() throws Exception {

	}

	protected EObject loadInputFile(String inputFileName, ResourceFactoryImpl resourceFactory, Map<?, ?> options) throws Exception {
		URI emfURI = URI.createURI("resources/input/" + inputFileName, true);
		XMLResource resource = (XMLResource) resourceFactory.createResource(emfURI);
		resource.load(options);

		ResourceSet resourceSet = new XMLPersistenceMappingResourceSetImpl();
		resourceSet.getResources().add(resource);

		assertSame(0, resource.getErrors().size());

		return resource.getContents().get(0);
	}

	protected String loadFileAsString(InputStream inputStream) throws Exception {
		inputStream = new BufferedInputStream(inputStream);
		try {
			byte[] buffer = new byte[1024];
			int bufferLength;
			StringBuilder content = new StringBuilder();
			while ((bufferLength = inputStream.read(buffer)) > -1) {
				content.append(new String(buffer, 0, bufferLength));
			}
			return content.toString();
		} finally {
			inputStream.close();
		}
	}

	protected String loadWorkingFileAsString(String fileName) throws Exception {
		URI emfURI = URI.createURI("working-dir/" + fileName, true);
		return loadFileAsString(URIConverter.INSTANCE.createInputStream(emfURI));
	}

	protected String loadInputFileAsString(String fileName) throws Exception {
		URI emfURI = URI.createURI("resources/input" + fileName, true);
		return loadFileAsString(URIConverter.INSTANCE.createInputStream(emfURI));
	}

	protected void saveWorkingFile(String fileName, EObject modelRoot, ResourceFactoryImpl resourceFactory, Map<?, ?> options) throws Exception {
		URI emfURI = URI.createURI("working-dir/" + fileName, true);
		XMLResource resource = (XMLResource) resourceFactory.createResource(emfURI);
		resource.getContents().add(modelRoot);
		resource.save(options);

		assertSame(0, resource.getErrors().size());
	}

}