/*******************************************************************************
 * Copyright (c) 2000, 2008 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.core.filebuffers.tests;

import java.io.File;
import java.io.InputStream;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Plugin;

import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectDescription;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;

import org.eclipse.core.filebuffers.manipulation.ContainerCreator;

/**
 * @since 3.0
 */
public class ResourceHelper {

	private final static IProgressMonitor NULL_MONITOR= new NullProgressMonitor();
	private static final int MAX_RETRY= 5;

	public static IProject createProject(String projectName) throws CoreException {

		IWorkspaceRoot root= ResourcesPlugin.getWorkspace().getRoot();
		IProject project= root.getProject(projectName);
		if (!project.exists())
			project.create(NULL_MONITOR);
		else
			project.refreshLocal(IResource.DEPTH_INFINITE, null);

		if (!project.isOpen())
			project.open(NULL_MONITOR);

		return project;
	}

	public static void deleteProject(String projectName) {
		IWorkspaceRoot root= ResourcesPlugin.getWorkspace().getRoot();
		IProject project= root.getProject(projectName);
		if (project.exists())
			delete(project);
	}

	public static void delete(final IProject project) {
		delete(project, true);
	}

	public static void delete(final IProject project, boolean deleteContent) {
		for (int i= 0; i < MAX_RETRY; i++) {
			try {
				project.delete(deleteContent, true, NULL_MONITOR);
				i= MAX_RETRY;
			} catch (CoreException x) {
				if (i == MAX_RETRY - 1) {
					FileBuffersTestPlugin.getDefault().getLog().log(x.getStatus());
//					throw x;
				}
				try {
					Thread.sleep(1000); // sleep a second
				} catch (InterruptedException e) {
				}
			}
		}
	}

	public static IFolder createFolder(String portableFolderPath) throws CoreException {
		ContainerCreator creator= new ContainerCreator(ResourcesPlugin.getWorkspace(), new Path(portableFolderPath));
		IContainer container= creator.createContainer(NULL_MONITOR);
		if (container instanceof IFolder)
			return (IFolder) container;
		return null;
	}

	public static IFile createFile(IFolder folder, String name, String contents) throws CoreException {
		return createFile(folder.getFile(name), contents);
	}

	public static IFile createFile(IProject project, String name, String contents) throws CoreException {
		return createFile(project.getFile(name), contents);
	}

	private static IFile createFile(IFile file, String contents) throws CoreException {
		if (contents == null)
			contents= "";
		InputStream inputStream= new java.io.StringBufferInputStream(contents);
		file.create(inputStream, true, NULL_MONITOR);
		return file;
	}

	public static IFile createLinkedFile(IContainer container, IPath linkPath, File linkedFileTarget) throws CoreException {
		IFile iFile= container.getFile(linkPath);
		iFile.createLink(new Path(linkedFileTarget.getAbsolutePath()), IResource.ALLOW_MISSING_LOCAL, NULL_MONITOR);
		return iFile;
	}

	public static IFile createLinkedFile(IContainer container, IPath linkPath, Plugin plugin, IPath linkedFileTargetPath) throws CoreException {
		File file= FileTool.getFileInPlugin(plugin, linkedFileTargetPath);
		IFile iFile= container.getFile(linkPath);
		iFile.createLink(new Path(file.getAbsolutePath()), IResource.ALLOW_MISSING_LOCAL, NULL_MONITOR);
		return iFile;
	}

	public static IFolder createLinkedFolder(IContainer container, IPath linkPath, File linkedFolderTarget) throws CoreException {
		IFolder folder= container.getFolder(linkPath);
		folder.createLink(new Path(linkedFolderTarget.getAbsolutePath()), IResource.ALLOW_MISSING_LOCAL, NULL_MONITOR);
		return folder;
	}

	public static IFolder createLinkedFolder(IContainer container, IPath linkPath, Plugin plugin, IPath linkedFolderTargetPath) throws CoreException {
		File file= FileTool.getFileInPlugin(plugin, linkedFolderTargetPath);
		IFolder iFolder= container.getFolder(linkPath);
		iFolder.createLink(new Path(file.getAbsolutePath()), IResource.ALLOW_MISSING_LOCAL, NULL_MONITOR);
		return iFolder;
	}

	public static IProject createLinkedProject(String projectName, Plugin plugin, IPath linkPath) throws CoreException {
		IWorkspace workspace= ResourcesPlugin.getWorkspace();
		IProject project= workspace.getRoot().getProject(projectName);

		IProjectDescription desc= workspace.newProjectDescription(projectName);
		File file= FileTool.getFileInPlugin(plugin, linkPath);
		IPath projectLocation= new Path(file.getAbsolutePath());
		if (Platform.getLocation().equals(projectLocation))
			projectLocation= null;
		desc.setLocation(projectLocation);

		project.create(desc, NULL_MONITOR);
		if (!project.isOpen())
			project.open(NULL_MONITOR);

		return project;
	}
}