/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package jdk.internal.joptsimple.util;

import java.nio.file.Files;

import java.nio.file.Path;

/**

 * Enum for checking common conditions of files and directories.

 *

 * @see jdk.internal.joptsimple.util.PathConverter

 */

public enum PathProperties {

    FILE_EXISTING( "file.existing" ) {

        @Override

        boolean accept( Path path ) {

            return Files.isRegularFile( path );

        }

    },

    DIRECTORY_EXISTING( "directory.existing" ) {

        @Override

        boolean accept( Path path ) {

            return Files.isDirectory( path );

        }

    },

    NOT_EXISTING( "file.not.existing" ) {

        @Override

        boolean accept( Path path ) {

            return Files.notExists( path );

        }

    },

    FILE_OVERWRITABLE( "file.overwritable" ) {

        @Override

        boolean accept( Path path ) {

            return FILE_EXISTING.accept( path ) && WRITABLE.accept( path );

        }

    },

    READABLE( "file.readable" ) {

        @Override

        boolean accept( Path path ) {

            return Files.isReadable( path );

        }

    },

    WRITABLE( "file.writable" ) {

        @Override

        boolean accept( Path path ) {

            return Files.isWritable( path );

        }

    };

    private final String messageKey;

    private PathProperties( String messageKey ) {

        this.messageKey = messageKey;

    }

    abstract boolean accept( Path path );

    String getMessageKey() {

        return messageKey;

    }

}