/*******************************************************************************
 * Copyright (c) 2007, 2013 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.wst.html.ui.internal.wizard;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;

/**
 * This class encapsulates any used Module Core and Facets APIs along with
 * fallbacks for use on non-compliant projects and when those services are not
 * available at runtime.
 * 
 * Because ModuleCore API calls can result in locks needing to be acquired,
 * none of these methods should be called while other thread locks have
 * already been acquired.
 */
final class FacetModuleCoreSupport {
	static final boolean _dump_NCDFE = false;
	static final String META_INF_RESOURCES = "META-INF/resources/"; //$NON-NLS-1$
	static final IPath META_INF_RESOURCES_PATH = new Path(META_INF_RESOURCES);

	/**
	 * @param project
	 * @return the IPath to the "root" of the web contents
	 */
	public static IPath getWebContentRootPath(IProject project) {
		if (project == null)
			return null;
		IPath path = null;
		try {
			path = FacetModuleCoreSupportDelegate.getWebContentRootPath(project);
		}
		catch (NoClassDefFoundError e) {
			if (_dump_NCDFE)
				e.printStackTrace();
		}
		return path;
	}

	/**
	 * @param project
	 * @return the IPaths to acceptable "roots" in a project
	 */
	public static IPath[] getAcceptableRootPaths(IProject project) {
		if (project == null)
			return null;
		IPath[] paths = null;
		try {
			paths = FacetModuleCoreSupportDelegate.getAcceptableRootPaths(project);
		}
		catch (NoClassDefFoundError e) {
			if (_dump_NCDFE)
				e.printStackTrace();
			return new IPath[]{project.getFullPath()};
		}
		return paths;
	}

	/**
	 * @param project
	 * @return
	 * @throws org.eclipse.core.runtime.CoreException
	 */
	public static boolean isWebProject(IProject project) {
		if (project == null)
			return false;
		try {
			return FacetModuleCoreSupportDelegate.isWebProject(project);
		}
		catch (NoClassDefFoundError e) {
			if (_dump_NCDFE)
				e.printStackTrace();
		}
		return true;
	}

	/**
	 * Gets the root container for the path in the project
	 * @param project
	 * @param path
	 * @return
	 */
	public static IPath getRootContainerForPath(IProject project, IPath path) {
		if (project == null)
			return null;
		IPath root = null;
		try {
			root = FacetModuleCoreSupportDelegate.getRootContainerForPath(project, path);
		}
		catch (NoClassDefFoundError e) {
			if (_dump_NCDFE)
				e.printStackTrace();
			return null;
		}
		return root;
	}

	/**
	 * Gets the default root container for the project
	 * @param project
	 * @return
	 */
	public static IPath getDefaultRootContainer(IProject project) {
		if (project == null)
			return null;
		IPath root = null;
		try {
			root = FacetModuleCoreSupportDelegate.getDefaultRoot(project);
		}
		catch (NoClassDefFoundError e) {
			if (_dump_NCDFE)
				e.printStackTrace();
			return null;
		}
		return root;
	}
}