/*

 * 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.

 *

 * 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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 */

/*

 * @test

 * @bug 8164389

 * @summary walk entries in a jdk.nio.zipfs.JarFileSystem

 * @modules jdk.jartool/sun.tools.jar

 *          jdk.zipfs

 * @run testng JFSTester

 */

import org.testng.Assert;

import org.testng.annotations.AfterClass;

import org.testng.annotations.BeforeClass;

import org.testng.annotations.Test;

import java.io.IOException;

import java.io.UncheckedIOException;

import java.net.URI;

import java.nio.file.FileSystem;

import java.nio.file.FileSystems;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.HashMap;

import java.util.Map;

import java.util.Set;

import java.util.stream.Collectors;

public class JFSTester {

    private URI jarURI;

    private Path jarfile;

    @BeforeClass

    public void initialize() throws Exception {

        String userdir = System.getProperty("user.dir",".");

        jarfile = Paths.get(userdir, "test.jar");

        String srcdir = System.getProperty("test.src");

        String[] args = (

                        "-cf "

                        + jarfile.toString()

                        + " -C "

                        + srcdir

                        + " root --release 9 -C "

                        + srcdir

                        + System.getProperty("file.separator")

                        + "v9 root"

        ).split(" +");

        new sun.tools.jar.Main(System.out, System.err, "jar").run(args);

        String ssp = jarfile.toUri().toString();

        jarURI = new URI("jar", ssp, null);

    }

    @AfterClass

    public void close() throws IOException {

        Files.deleteIfExists(jarfile);

    }

    @Test

    public void testWalk() throws IOException {

        // no configuration, treat multi-release jar as unversioned

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

        Set<String> contents = doTest(env);

        Set<String> baseContents = Set.of(

                "This is leaf 1.\n",

                "This is leaf 2.\n",

                "This is leaf 3.\n",

                "This is leaf 4.\n"

        );

        Assert.assertEquals(contents, baseContents);

        // a configuration and jar file is multi-release

        env.put("multi-release", "9");

        contents = doTest(env);

        Set<String> versionedContents = Set.of(

                "This is versioned leaf 1.\n",

                "This is versioned leaf 2.\n",

                "This is versioned leaf 3.\n",

                "This is versioned leaf 4.\n"

        );

        Assert.assertEquals(contents, versionedContents);

    }

    private Set<String> doTest(Map<String,String> env) throws IOException {

        Set<String> contents;

        try (FileSystem fs = FileSystems.newFileSystem(jarURI, env)) {

            Path root = fs.getPath("root");

            contents = Files.walk(root)

                    .filter(p -> !Files.isDirectory(p))

                    .map(this::pathToContents)

                    .collect(Collectors.toSet());

        }

        return contents;

    }

    private String pathToContents(Path path) {

        try {

            return new String(Files.readAllBytes(path));

        } catch (IOException x) {

            throw new UncheckedIOException(x);

        }

    }

}