/*

 * Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 *   - Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 *

 *   - Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 *

 *   - Neither the name of Oracle nor the names of its

 *     contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

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 */

import java.io.*;

import java.nio.*;

import java.nio.channels.*;

import java.nio.file.*;

import java.nio.file.spi.*;

import java.nio.file.attribute.*;

import java.net.*;

import java.text.DateFormat;

import java.text.SimpleDateFormat;

import java.util.*;

import static java.nio.file.StandardOpenOption.*;

import static java.nio.file.StandardCopyOption.*;

/*

 * ZipFileSystem usage demo

 *

 * java Demo action ZipfileName [...]

 *

 * @author Xueming Shen

 */

public class Demo {

    static enum Action {

        rename,          // <java Demo rename zipfile src dst>

                         // rename entry src to dst inside zipfile

        movein,          // <java Demo movein zipfile src dst>

                         // move an external src file into zipfile

                         // as entry dst

        moveout,         // <java Demo moveout zipfile src dst>

                         // move a zipfile entry src out to dst

        copy,            // <java Demo copy zipfile src dst>

                         // copy entry src to dst inside zipfile

        copyin,          // <java Demo copyin zipfile src dst>

                         // copy an external src file into zipfile

                         // as entry dst

        copyin_attrs,    // <java Demo copyin_attrs zipfile src dst>

                         // copy an external src file into zipfile

                         // as entry dst, with attributes (timestamp)

        copyout,         // <java Demo copyout zipfile src dst>

                         // copy zipfile entry src" out to file dst

        copyout_attrs,   // <java Demo copyout_attrs zipfile src dst>

        zzmove,          // <java Demo zzmove zfsrc zfdst path>

                         // move entry path/dir from zfsrc to zfdst

        zzcopy,          // <java Demo zzcopy zfsrc zfdst path>

                         // copy path from zipfile zfsrc to zipfile

                         // zfdst

        attrs,           // <java Demo attrs zipfile path>

                         // printout the attributes of entry path

        attrsspace,      // <java Demo attrsspace zipfile path>

                         // printout the storespace attrs of entry path

        setmtime,        // <java Demo setmtime zipfile "MM/dd/yy-HH:mm:ss" path...>

                         // set the lastModifiedTime of entry path

        setatime,        // <java Demo setatime zipfile "MM/dd/yy-HH:mm:ss" path...>

        setctime,        // <java Demo setctime zipfile "MM/dd/yy-HH:mm:ss" path...>

        lsdir,           // <java Demo lsdir zipfile dir>

                         // list dir's direct child files/dirs

        mkdir,           // <java Demo mkdir zipfile dir>

        mkdirs,          // <java Demo mkdirs zipfile dir>

        rmdirs,          // <java Demo rmdirs zipfile dir>

        list,            // <java Demo list zipfile [dir]>

                         // recursively list all entries of dir

                         // via DirectoryStream

        tlist,           // <java Demo tlist zipfile [dir]>

                         // list with buildDirTree=true

        vlist,           // <java Demo vlist zipfile [dir]>

                         // recursively verbose list all entries of

                         // dir via DirectoryStream

        walk,            // <java Demo walk zipfile [dir]>

                         // recursively walk all entries of dir

                         // via Files.walkFileTree

        twalk,           // <java Demo twalk zipfile [dir]>

                         // walk with buildDirTree=true

        extract,         // <java Demo extract zipfile file [...]>

        update,          // <java Demo extract zipfile file [...]>

        delete,          // <java Demo delete zipfile file [...]>

        add,             // <java Demo add zipfile file [...]>

        create,          // <java Demo create zipfile file [...]>

                         // create a new zipfile if it doesn't exit

                         // and then add the file(s) into it.

        attrs2,          // <java Demo attrs2 zipfile file [...]>

                         // test different ways to print attrs

        prof,

    }

    public static void main(String[] args) throws Throwable {

        FileSystemProvider provider = getZipFSProvider();

        if (provider == null) {

            System.err.println("ZIP filesystem provider is not installed");

            System.exit(1);

        }

        Action action = Action.valueOf(args[0]);

        Map<String, Object> env = env = new HashMap<>();

        if (action == Action.create)

            env.put("create", "true");

        try (FileSystem fs = provider.newFileSystem(Paths.get(args[1]), env)) {

            Path path, src, dst;

            switch (action) {

            case rename:

                src = fs.getPath(args[2]);

                dst = fs.getPath(args[3]);

                Files.move(src, dst);

                break;

            case moveout:

                src = fs.getPath(args[2]);

                dst = Paths.get(args[3]);

                Files.move(src, dst);

                break;

            case movein:

                src = Paths.get(args[2]);

                dst = fs.getPath(args[3]);

                Files.move(src, dst);

                break;

            case copy:

                src = fs.getPath(args[2]);

                dst = fs.getPath(args[3]);

                Files.copy(src, dst);

                break;

            case copyout:

                src = fs.getPath(args[2]);

                dst = Paths.get(args[3]);

                Files.copy(src, dst);

                break;

            case copyin:

                src = Paths.get(args[2]);

                dst = fs.getPath(args[3]);

                Files.copy(src, dst);

                break;

            case copyin_attrs:

                src = Paths.get(args[2]);

                dst = fs.getPath(args[3]);

                Files.copy(src, dst, COPY_ATTRIBUTES);

                break;

            case copyout_attrs:

                src = fs.getPath(args[2]);

                dst = Paths.get(args[3]);

                Files.copy(src, dst, COPY_ATTRIBUTES);

                break;

            case zzmove:

                try (FileSystem fs2 = provider.newFileSystem(Paths.get(args[2]), env)) {

                    z2zmove(fs, fs2, args[3]);

                }

                break;

            case zzcopy:

                try (FileSystem fs2 = provider.newFileSystem(Paths.get(args[2]), env)) {

                    z2zcopy(fs, fs2, args[3]);

                }

                break;

            case attrs:

                for (int i = 2; i < args.length; i++) {

                    path = fs.getPath(args[i]);

                    System.out.println(path);

                    System.out.println(

                        Files.readAttributes(path, BasicFileAttributes.class).toString());

                }

                break;

            case setmtime:

                DateFormat df = new SimpleDateFormat("MM/dd/yyyy-HH:mm:ss");

                Date newDatetime = df.parse(args[2]);

                for (int i = 3; i < args.length; i++) {

                    path = fs.getPath(args[i]);

                    Files.setAttribute(path, "lastModifiedTime",

                                       FileTime.fromMillis(newDatetime.getTime()));

                    System.out.println(

                        Files.readAttributes(path, BasicFileAttributes.class).toString());

                }

                break;

            case setctime:

                df = new SimpleDateFormat("MM/dd/yyyy-HH:mm:ss");

                newDatetime = df.parse(args[2]);

                for (int i = 3; i < args.length; i++) {

                    path = fs.getPath(args[i]);

                    Files.setAttribute(path, "creationTime",

                                       FileTime.fromMillis(newDatetime.getTime()));

                    System.out.println(

                        Files.readAttributes(path, BasicFileAttributes.class).toString());

                }

                break;

            case setatime:

                df = new SimpleDateFormat("MM/dd/yyyy-HH:mm:ss");

                newDatetime = df.parse(args[2]);

                for (int i = 3; i < args.length; i++) {

                    path = fs.getPath(args[i]);

                    Files.setAttribute(path, "lastAccessTime",

                                       FileTime.fromMillis(newDatetime.getTime()));

                    System.out.println(

                        Files.readAttributes(path, BasicFileAttributes.class).toString());

                }

                break;

            case attrsspace:

                path = fs.getPath("/");

                FileStore fstore = Files.getFileStore(path);

                System.out.printf("filestore[%s]%n", fstore.name());

                System.out.printf("    totalSpace: %d%n",

                                  (Long)fstore.getAttribute("totalSpace"));

                System.out.printf("   usableSpace: %d%n",

                                  (Long)fstore.getAttribute("usableSpace"));

                System.out.printf("  unallocSpace: %d%n",

                                  (Long)fstore.getAttribute("unallocatedSpace"));

                break;

            case list:

            case tlist:

                if (args.length < 3)

                    list(fs.getPath("/"), false);

                else

                    list(fs.getPath(args[2]), false);

                break;

            case vlist:

                if (args.length < 3)

                    list(fs.getPath("/"), true);

                else

                    list(fs.getPath(args[2]), true);

                break;

            case twalk:

            case walk:

                walk(fs.getPath((args.length > 2)? args[2] : "/"));

                break;

            case extract:

                if (args.length == 2) {

                     extract(fs, "/");

                } else {

                    for (int i = 2; i < args.length; i++) {

                        extract(fs, args[i]);

                    }

                }

                break;

            case delete:

                for (int i = 2; i < args.length; i++)

                    Files.delete(fs.getPath(args[i]));

                break;

            case create:

            case add:

            case update:

                for (int i = 2; i < args.length; i++) {

                    update(fs, args[i]);

                }

                break;

            case lsdir:

                path = fs.getPath(args[2]);

                final String fStr = (args.length > 3)?args[3]:"";

                try (DirectoryStream<Path> ds = Files.newDirectoryStream(path,

                    new DirectoryStream.Filter<Path>() {

                        @Override

                        public boolean accept(Path path) {

                            return path.toString().contains(fStr);

                        }

                    }))

                {

                    for (Path p : ds)

                        System.out.println(p);

                }

                break;

            case mkdir:

                Files.createDirectory(fs.getPath(args[2]));

                break;

            case mkdirs:

                mkdirs(fs.getPath(args[2]));

                break;

            case attrs2:

                for (int i = 2; i < args.length; i++) {

                    path = fs.getPath(args[i]);

                    System.out.printf("%n%s%n", path);

                    System.out.println("-------(1)---------");

                    System.out.println(

                        Files.readAttributes(path, BasicFileAttributes.class).toString());

                    System.out.println("-------(2)---------");

                    Map<String, Object> map = Files.readAttributes(path, "zip:*");

                    for (Map.Entry<String, Object> e : map.entrySet()) {

                        System.out.printf("    %s : %s%n", e.getKey(), e.getValue());

                    }

                    System.out.println("-------(3)---------");

                    map = Files.readAttributes(path, "size,lastModifiedTime,isDirectory");

                    for (Map.Entry<String, ?> e : map.entrySet()) {

                        System.out.printf("    %s : %s%n", e.getKey(), e.getValue());

                    }

                }

                break;

            case prof:

                list(fs.getPath("/"), false);

                while (true) {

                    Thread.sleep(10000);

                    //list(fs.getPath("/"), true);

                    System.out.println("sleeping...");

                }

            }

        } catch (Exception x) {

            x.printStackTrace();

        }

    }

    private static FileSystemProvider getZipFSProvider() {

        for (FileSystemProvider provider : FileSystemProvider.installedProviders()) {

            if ("jar".equals(provider.getScheme()))

                return provider;

        }

        return null;

    }

    @SuppressWarnings("unused")

    /**

     * Not used in demo, but included for demonstrational purposes.

     */

    private static byte[] getBytes(String name) {

        return name.getBytes();

    }

    @SuppressWarnings("unused")

    /**

     * Not used in demo, but included for demonstrational purposes.

     */

    private static String getString(byte[] name) {

        return new String(name);

    }

    private static void walk(Path path) throws IOException

    {

        Files.walkFileTree(

            path,

            new SimpleFileVisitor<Path>() {

                private int indent = 0;

                private void indent() {

                    int n = 0;

                    while (n++ < indent)

                        System.out.printf(" ");

                }

                @Override

                public FileVisitResult visitFile(Path file,

                                                 BasicFileAttributes attrs)

                {

                    indent();

                    System.out.printf("%s%n", file.getFileName().toString());

                    return FileVisitResult.CONTINUE;

                }

                @Override

                public FileVisitResult preVisitDirectory(Path dir,

                                                         BasicFileAttributes attrs)

                {

                    indent();

                    System.out.printf("[%s]%n", dir.toString());

                    indent += 2;

                    return FileVisitResult.CONTINUE;

                }

                @Override

                public FileVisitResult postVisitDirectory(Path dir,

                                                          IOException ioe)

                {

                    indent -= 2;

                    return FileVisitResult.CONTINUE;

                }

        });

    }

    private static void update(FileSystem fs, String path) throws Throwable{

        Path src = FileSystems.getDefault().getPath(path);

        if (Files.isDirectory(src)) {

            try (DirectoryStream<Path> ds = Files.newDirectoryStream(src)) {

                for (Path child : ds)

                    update(fs, child.toString());

            }

        } else {

            Path dst = fs.getPath(path);

            Path parent = dst.getParent();

            if (parent != null && Files.notExists(parent))

                mkdirs(parent);

            Files.copy(src, dst, REPLACE_EXISTING);

        }

    }

    private static void extract(FileSystem fs, String path) throws Throwable{

        Path src = fs.getPath(path);

        if (Files.isDirectory(src)) {

            try (DirectoryStream<Path> ds = Files.newDirectoryStream(src)) {

                for (Path child : ds)

                    extract(fs, child.toString());

            }

        } else {

            if (path.startsWith("/"))

                path = path.substring(1);

            Path dst = FileSystems.getDefault().getPath(path);

            Path parent = dst.getParent();

            if (Files.notExists(parent))

                mkdirs(parent);

            Files.copy(src, dst, REPLACE_EXISTING);

        }

    }

    // use DirectoryStream

    private static void z2zcopy(FileSystem src, FileSystem dst, String path)

        throws IOException

    {

        Path srcPath = src.getPath(path);

        Path dstPath = dst.getPath(path);

        if (Files.isDirectory(srcPath)) {

            if (!Files.exists(dstPath)) {

                try {

                    mkdirs(dstPath);

                } catch (FileAlreadyExistsException x) {}

            }

            try (DirectoryStream<Path> ds = Files.newDirectoryStream(srcPath)) {

                for (Path child : ds) {

                    z2zcopy(src, dst,

                            path + (path.endsWith("/")?"":"/") + child.getFileName());

                }

            }

        } else {

            //System.out.println("copying..." + path);

            Files.copy(srcPath, dstPath);

        }

    }

    // use TreeWalk to move

    private static void z2zmove(FileSystem src, FileSystem dst, String path)

        throws IOException

    {

        final Path srcPath = src.getPath(path).toAbsolutePath();

        final Path dstPath = dst.getPath(path).toAbsolutePath();

        Files.walkFileTree(srcPath, new SimpleFileVisitor<Path>() {

            @Override

            public FileVisitResult visitFile(Path file,

                                            BasicFileAttributes attrs)

            {

                Path dst = srcPath.relativize(file);

                dst = dstPath.resolve(dst);

                try {

                    Path parent = dstPath.getParent();

                    if (parent != null && Files.notExists(parent))

                        mkdirs(parent);

                    Files.move(file, dst);

                } catch (IOException x) {

                    x.printStackTrace();

                }

                return FileVisitResult.CONTINUE;

            }

            @Override