/*

 *

 * 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,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

package com.sun.nio.zipfs;

import java.nio.file.attribute.*;

import java.io.IOException;

import java.util.LinkedHashMap;

import java.util.Map;

/*

 * @author  Xueming Shen, Rajendra Gutupalli, Jaya Hangal

 */

public class ZipFileAttributeView implements BasicFileAttributeView

{

    private static enum AttrID {

        size,

        creationTime,

        lastAccessTime,

        lastModifiedTime,

        isDirectory,

        isRegularFile,

        isSymbolicLink,

        isOther,

        fileKey,

        compressedSize,

        crc,

        method

    };

    private final ZipPath path;

    private final boolean isZipView;

    private ZipFileAttributeView(ZipPath path, boolean isZipView) {

        this.path = path;

        this.isZipView = isZipView;

    }

    static <V extends FileAttributeView> V get(ZipPath path, Class<V> type) {

        if (type == null)

            throw new NullPointerException();

        if (type == BasicFileAttributeView.class)

            return (V)new ZipFileAttributeView(path, false);

        if (type == ZipFileAttributeView.class)

            return (V)new ZipFileAttributeView(path, true);

        return null;

    }

    static ZipFileAttributeView get(ZipPath path, String type) {

        if (type == null)

            throw new NullPointerException();

        if (type.equals("basic"))

            return new ZipFileAttributeView(path, false);

        if (type.equals("zip"))

            return new ZipFileAttributeView(path, true);

        return null;

    }

    @Override

    public String name() {

        return isZipView ? "zip" : "basic";

    }

    public ZipFileAttributes readAttributes() throws IOException

    {

        return path.getAttributes();

    }

    @Override

    public void setTimes(FileTime lastModifiedTime,

                         FileTime lastAccessTime,

                         FileTime createTime)

        throws IOException

    {

        path.setTimes(lastModifiedTime, lastAccessTime, createTime);

    }

    void setAttribute(String attribute, Object value)

        throws IOException

    {

        try {

            if (AttrID.valueOf(attribute) == AttrID.lastModifiedTime)

                setTimes ((FileTime)value, null, null);

            if (AttrID.valueOf(attribute) == AttrID.lastAccessTime)

                setTimes (null, (FileTime)value, null);

            if (AttrID.valueOf(attribute) == AttrID.creationTime)

                setTimes (null, null, (FileTime)value);

            return;

        } catch (IllegalArgumentException x) {}

        throw new UnsupportedOperationException("'" + attribute +

            "' is unknown or read-only attribute");

    }

    Map<String, Object> readAttributes(String attributes)

        throws IOException

    {

        ZipFileAttributes zfas = readAttributes();

        LinkedHashMap<String, Object> map = new LinkedHashMap<>();

        if ("*".equals(attributes)) {

            for (AttrID id : AttrID.values()) {

                try {

                    map.put(id.name(), attribute(id, zfas));

                } catch (IllegalArgumentException x) {}

            }

        } else {

            String[] as = attributes.split(",");

            for (String a : as) {

                try {

                    map.put(a, attribute(AttrID.valueOf(a), zfas));

                } catch (IllegalArgumentException x) {}

            }

        }

        return map;

    }

    Object attribute(AttrID id, ZipFileAttributes zfas) {

        switch (id) {

        case size:

            return zfas.size();

        case creationTime:

            return zfas.creationTime();

        case lastAccessTime:

            return zfas.lastAccessTime();

        case lastModifiedTime:

            return zfas.lastModifiedTime();

        case isDirectory:

            return zfas.isDirectory();

        case isRegularFile:

            return zfas.isRegularFile();

        case isSymbolicLink:

            return zfas.isSymbolicLink();

        case isOther:

            return zfas.isOther();

        case fileKey:

            return zfas.fileKey();

        case compressedSize:

            if (isZipView)

                return zfas.compressedSize();

            break;

        case crc:

            if (isZipView)

                return zfas.crc();

            break;

        case method:

            if (isZipView)

                return zfas.method();

            break;

        }

        return null;

    }

}