/*

 * 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.

 *

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package nsk.share;

import jdk.test.lib.JDKToolLauncher;

import jdk.test.lib.Utils;

import jdk.test.lib.process.ProcessTools;

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.Arrays;

import java.util.stream.Stream;

public class ExtraClassesBuilder {

    public static void main(String[] args) {

        String[] javacOpts = Arrays.stream(args)

                                   .takeWhile(s -> s.startsWith("-"))

                                   .toArray(String[]::new);

        Arrays.stream(args)

              .dropWhile(s -> s.startsWith("-"))

              .forEach(s -> ExtraClassesBuilder.compile(s, javacOpts));

    }

    private static void compile(String name, String[] args) {

        Path src = Paths.get(Utils.TEST_SRC)

                        .resolve(name)

                        .toAbsolutePath();

        if (Files.notExists(src)) {

            throw new Error(src + " doesn't exist");

        }

        Path dst = Paths.get("bin")

                        .resolve(Paths.get(name).getFileName())

                        .toAbsolutePath();

        try {

            Files.createDirectories(dst);

        } catch (IOException e) {

            throw new Error("can't create dir " + dst, e);

        }

        JDKToolLauncher javac = JDKToolLauncher.create("javac")

                                               .addToolArg("-d")

                                               .addToolArg(dst.toString())

                                               .addToolArg("-cp")

                                               .addToolArg(Utils.TEST_CLASS_PATH);

        for (String arg : args) {

            javac.addToolArg(arg);

        }

        try (Stream<Path> stream = Files.walk(src)) {

            stream.map(Path::toAbsolutePath)

                  .map(Path::toString)

                  .filter(s -> s.endsWith(".java"))

                  .forEach(javac::addToolArg);

        } catch (IOException e) {

            throw new Error("traverse dir " + src, e);

        }

        executeTool(javac);

    }

    private static void executeTool(JDKToolLauncher tool) {

        String[] command = tool.getCommand();

        try {

            ProcessTools.executeCommand(command)

                        .shouldHaveExitValue(0);

        } catch (Error | RuntimeException e) {

            throw e;

        } catch (Throwable e) {

            throw new Error("execution of " + Arrays.toString(command) + " failed", e);

        }

    }

}