/**

 * Copyright (c) 2015, 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.

 *

 * 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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 * questions.

 */

/*

 * @test

 * @summary Basic test of jlink to create jmods and images

 * @author Andrei Eremeev

 * @library /test/lib

 * @modules java.base/jdk.internal.module

 *          jdk.jlink

 *          jdk.compiler

 * @build jdk.test.lib.process.ProcessTools

 *        jdk.test.lib.process.OutputAnalyzer

 *        jdk.test.lib.compiler.CompilerUtils

 *        jdk.test.lib.util.JarUtils

 * @run main BasicTest

 */

import java.io.File;

import java.io.PrintWriter;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import java.util.spi.ToolProvider;

import jdk.test.lib.compiler.CompilerUtils;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.util.JarUtils;

public class BasicTest {

    static final ToolProvider JMOD_TOOL = ToolProvider.findFirst("jmod")

        .orElseThrow(() ->

            new RuntimeException("jmod tool not found")

        );

    static final ToolProvider JLINK_TOOL = ToolProvider.findFirst("jlink")

        .orElseThrow(() ->

            new RuntimeException("jlink tool not found")

        );

    private final String TEST_MODULE = "test";

    private final Path jdkHome = Paths.get(System.getProperty("test.jdk"));

    private final Path jdkMods = jdkHome.resolve("jmods");

    private final Path testSrc = Paths.get(System.getProperty("test.src"));

    private final Path src = testSrc.resolve("src").resolve(TEST_MODULE);

    private final Path classes = Paths.get("classes");

    private final Path jmods = Paths.get("jmods");

    private final Path jars = Paths.get("jars");

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

        new BasicTest().run();

    }

    public void run() throws Throwable {

        if (Files.notExists(jdkMods)) {

            return;

        }

        if (!CompilerUtils.compile(src, classes)) {

            throw new AssertionError("Compilation failure. See log.");

        }

        Files.createDirectories(jmods);

        Files.createDirectories(jars);

        Path jarfile = jars.resolve("test.jar");

        JarUtils.createJarFile(jarfile, classes);

        Path image = Paths.get("mysmallimage");

        runJmod(jarfile.toString(), TEST_MODULE, true);

        runJlink(image, TEST_MODULE, "--compress", "2", "--launcher", "foo=" + TEST_MODULE);

        execute(image, "foo");

        Files.delete(jmods.resolve(TEST_MODULE + ".jmod"));

        image = Paths.get("myimage");

        runJmod(classes.toString(), TEST_MODULE, true);

        runJlink(image, TEST_MODULE, "--launcher", "bar=" + TEST_MODULE);

        execute(image, "bar");

        Files.delete(jmods.resolve(TEST_MODULE + ".jmod"));

        image = Paths.get("myimage2");

        runJmod(classes.toString(), TEST_MODULE, false /* no ModuleMainClass! */);

        // specify main class in --launcher command line

        runJlink(image, TEST_MODULE, "--launcher", "bar2=" + TEST_MODULE + "/jdk.test.Test");

        execute(image, "bar2");

    }

    private void execute(Path image, String scriptName) throws Throwable {

        String cmd = image.resolve("bin").resolve(scriptName).toString();

        OutputAnalyzer analyzer;

        if (System.getProperty("os.name").startsWith("Windows")) {

            analyzer = ProcessTools.executeProcess("sh.exe", cmd, "1", "2", "3");

        } else {

            analyzer = ProcessTools.executeProcess(cmd, "1", "2", "3");

        }

        if (analyzer.getExitValue() != 0) {

            throw new AssertionError("Image invocation failed: rc=" + analyzer.getExitValue());

        }

    }

    private void runJlink(Path image, String modName, String... options) {

        List<String> args = new ArrayList<>();

        Collections.addAll(args,

                "--module-path", jdkMods + File.pathSeparator + jmods,

                "--add-modules", modName,

                "--output", image.toString());

        Collections.addAll(args, options);

        PrintWriter pw = new PrintWriter(System.out);

        int rc = JLINK_TOOL.run(pw, pw, args.toArray(new String[args.size()]));

        if (rc != 0) {

            throw new AssertionError("Jlink failed: rc = " + rc);

        }

    }

    private void runJmod(String cp, String modName, boolean main) {

        int rc;

        if (main) {

            rc = JMOD_TOOL.run(System.out, System.out, new String[] {

                "create",

                "--class-path", cp,

                "--module-version", "1.0",

                "--main-class", "jdk.test.Test",

                jmods.resolve(modName + ".jmod").toString()

            });

        } else {

            rc = JMOD_TOOL.run(System.out, System.out, new String[] {

                "create",

                "--class-path", cp,

                "--module-version", "1.0",

                jmods.resolve(modName + ".jmod").toString(),

            });

        }

        if (rc != 0) {

            throw new AssertionError("Jmod failed: rc = " + rc);

        }

    }

}