/*

 * Copyright (c) 2016, 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.tools.jlink.internal;

import java.net.URI;

import java.nio.file.FileSystem;

import java.nio.file.FileSystems;

import java.nio.file.Path;

import java.nio.file.PathMatcher;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Comparator;

import java.util.List;

import java.util.stream.Collectors;

import jdk.tools.jlink.plugin.Plugin;

import jdk.tools.jlink.plugin.Plugin.Category;

public class Utils {

    private Utils() {}

    // jrt-fs file system

    private static FileSystem JRT_FILE_SYSTEM;

    // current module

    private static final Module THIS_MODULE = Utils.class.getModule();

    public static List<String> parseList(String arguments) {

        return Arrays.stream(arguments.split(","))

                     .map((p) -> p.trim())

                     .filter((p) -> !p.isEmpty())

                     .collect(Collectors.toList());

    }

    public static List<Plugin> getSortedPlugins(List<Plugin> plugins) {

        List<Plugin> res = new ArrayList<>();

        res.addAll(plugins);

        res.sort(new Comparator<Plugin>() {

            @Override

            public int compare(Plugin o1, Plugin o2) {

                return o1.getName().compareTo(o2.getName());

            }

        });

        return res;

    }

    public static boolean isFunctional(Plugin prov) {

        return prov.getState().contains(Plugin.State.FUNCTIONAL);

    }

    public static boolean isAutoEnabled(Plugin prov) {

        return prov.getState().contains(Plugin.State.AUTO_ENABLED);

    }

    public static boolean isDisabled(Plugin prov) {

        return prov.getState().contains(Plugin.State.DISABLED);

    }

    // is this a builtin (jdk.jlink) plugin?

    public static boolean isBuiltin(Plugin prov) {

        return THIS_MODULE.equals(prov.getClass().getModule());

    }

    public static FileSystem jrtFileSystem() {

        if (JRT_FILE_SYSTEM == null) {

            JRT_FILE_SYSTEM = FileSystems.getFileSystem(URI.create("jrt:/"));

        }

        return JRT_FILE_SYSTEM;

    }

    public static PathMatcher getPathMatcher(FileSystem fs, String pattern) {

        if (!pattern.startsWith("glob:") && !pattern.startsWith("regex:")) {

            pattern = "glob:" + pattern;

        }

        return fs.getPathMatcher(pattern);

    }

    public static PathMatcher getJRTFSPathMatcher(String pattern) {

        return getPathMatcher(jrtFileSystem(), pattern);

    }

    public static Path getJRTFSPath(String first, String... more) {

        return jrtFileSystem().getPath(first, more);

    }

}