/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 * Common Development and Distribution License (the "License").

 * You may not use this file except in compliance with the License.

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*

 * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.

 */

package com.oracle.solaris.vp.panel.common.api.file;

import java.io.*;

import java.util.List;

import com.oracle.solaris.rad.ObjectException;

@SuppressWarnings({"serial"})

public class RemoteFile extends File {

    //

    // Instance data

    //

    private FileBrowserMXBean browser;

    private FileSnapshot snapshot;

    //

    // Constructors

    //

    public RemoteFile(FileBrowserMXBean browser, FileSnapshot snapshot) {

	super(snapshot.getPath());

	this.browser = browser;

	this.snapshot = snapshot;

    }

    //

    // File methods

    //

    @Override

    public boolean canExecute() {

	// Operation not supported

	return false;

    }

    @Override

    public boolean canRead() {

	return snapshot.isReadable();

    }

    @Override

    public boolean canWrite() {

	return snapshot.isWritable();

    }

    @Override

    public boolean createNewFile() throws IOException {

	throw new IOException("operation not supported");

    }

    @Override

    public boolean delete() {

	// Operation not supported

	return false;

    }

    @Override

    public void deleteOnExit() {

	// Operation not supported

    }

    @Override

    public boolean exists() {

	return snapshot.isExists();

    }

    @Override

    public RemoteFile getAbsoluteFile() {

	// RemoteFiles are based on FileSnapshots which are always absolute

	return this;

    }

    @Override

    public String getAbsolutePath() {

	return snapshot.getAbsolutePath();

    }

    @Override

    public RemoteFile getCanonicalFile() throws IOException {

	if (snapshot.isCanonical()) {

	    return this;

	}

	String path = snapshot.getCanonicalPath();

	try {

	    return new RemoteFile(browser, browser.getFile(path));

	} catch (ObjectException e) {

	    throw new IOException(e);

	}

    }

    @Override

    public String getCanonicalPath() throws IOException {

	String path = snapshot.getCanonicalPath();

	if (path == null) {

	    // FileSnapshot could not canonicalize path

	    throw new IOException(

		"unable to canonicalize path: " + getAbsolutePath());

	}

	return path;

    }

    @Override

    public long getFreeSpace() {

	return snapshot.getFreeSpace();

    }

    @Override

    public RemoteFile getParentFile() {

	String parent = getParent();

	try {

	    return parent == null ? null :

		new RemoteFile(browser, browser.getFile(parent));

	} catch (ObjectException e) {

	    /* Not correct, but our choices are limited */

	    return null;

	}

    }

    @Override

    public long getTotalSpace() {

	return snapshot.getTotalSpace();

    }

    @Override

    public long getUsableSpace() {

	return snapshot.getUsableSpace();

    }

    @Override

    public boolean isAbsolute() {

	return snapshot.isAbsolute();

    }

    @Override

    public boolean isDirectory() {

	return snapshot.isDirectory();

    }

    @Override

    public boolean isFile() {

	return snapshot.isFile();

    }

    @Override

    public boolean isHidden() {

	return snapshot.isHidden();

    }

    @Override

    public long lastModified() {

	return snapshot.getLastModified().getTime();

    }

    @Override

    public long length() {

	return snapshot.getLength();

    }

    @Override

    public String[] list() {

	try {

	    List<FileSnapshot> snapshots = browser.getFiles(getAbsolutePath());

	    String[] names = new String[snapshots.size()];

	    int i = 0;

	    for (FileSnapshot ss : snapshots)

		names[i++] = ss.getBaseName();

	    return names;

	} catch (ObjectException e) {

	    return null;

	}

    }

    @Override

    public RemoteFile[] listFiles() {

	try {

	    List<FileSnapshot> snapshots = browser.getFiles(getAbsolutePath());

	    return toFiles(snapshots);

	} catch (ObjectException e) {

	    return null;

	}

    }

    @Override

    public boolean mkdir() {

	// Operation not supported

	return false;

    }

    @Override

    public boolean mkdirs() {

	// Operation not supported

	return false;

    }

    @Override

    public boolean renameTo(File dest) {

	// Operation not supported

	return false;

    }

    @Override

    public boolean setExecutable(boolean executable) {

	// Operation not supported

	return false;

    }

    @Override

    public boolean setExecutable(boolean executable, boolean ownerOnly) {

	// Operation not supported

	return false;

    }

    @Override

    public boolean setLastModified(long time) {

	// Operation not supported

	return false;

    }

    @Override

    public boolean setReadable(boolean readable) {

	// Operation not supported

	return false;

    }

    @Override

    public boolean setReadable(boolean readable, boolean ownerOnly) {

	// Operation not supported

	return false;

    }

    @Override

    public boolean setReadOnly() {

	// Operation not supported

	return false;

    }

    @Override

    public boolean setWritable(boolean writable) {

	// Operation not supported

	return false;

    }

    @Override

    public boolean setWritable(boolean writable, boolean ownerOnly) {

	// Operation not supported

	return false;

    }

    //

    // RemoteFile methods

    //

    public FileBrowserMXBean getBrowser() {

	return browser;

    }

    public FileSnapshot getSnapshot() {

	return snapshot;

    }

    protected RemoteFile[] toFiles(List<FileSnapshot> snapshots) {

	return toFiles(browser, snapshots);

    }

    //

    // Static methods

    //

    public static RemoteFile[] toFiles(

	FileBrowserMXBean browser, List<FileSnapshot> snapshots) {

	RemoteFile[] files = new RemoteFile[snapshots.size()];

	int i = 0;

	for (FileSnapshot ss : snapshots)

	    files[i++] = new RemoteFile(browser, ss);

	return files;

    }

}