/*

 * Copyright (c) 2015, 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.

 */

import java.io.IOException;

import java.io.UncheckedIOException;

import java.nio.file.Files;

import java.nio.file.Path;

import java.util.Collections;

import java.util.List;

import java.util.Map;

import java.util.function.Function;

import jdk.tools.jlink.plugin.Plugin;

import jdk.tools.jlink.plugin.ResourcePool;

import jdk.tools.jlink.plugin.ResourcePoolBuilder;

import jdk.tools.jlink.internal.PluginRepository;

import jdk.tools.jlink.internal.PostProcessor;

import jdk.tools.jlink.internal.ExecutableImage;

import tests.Helper;

/*

 * @test

 * @summary Test post processing

 * @author Jean-Francois Denise

 * @library ../lib

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

 *          jdk.jdeps/com.sun.tools.classfile

 *          jdk.jlink/jdk.tools.jlink.internal

 *          jdk.jlink/jdk.tools.jlink.plugin

 *          jdk.jlink/jdk.tools.jmod

 *          jdk.jlink/jdk.tools.jimage

 *          jdk.compiler

 * @build tests.*

 * @run main/othervm JLinkPostProcessingTest

 */

public class JLinkPostProcessingTest {

    private static class PPPlugin implements PostProcessor, Plugin {

        private static ExecutableImage called;

        private static final String NAME = "pp";

        @Override

        public List<String> process(ExecutableImage image) {

            called = image;

            Path gen = image.getHome().resolve("lib").resolve("toto.txt");

            try {

                Files.createFile(gen);

            } catch (IOException ex) {

                throw new UncheckedIOException(ex);

            }

            return null;

        }

        @Override

        public ResourcePool transform(ResourcePool in, ResourcePoolBuilder out) {

            in.transformAndCopy(Function.identity(), out);

            return out.build();

        }

        @Override

        public String getName() {

            return NAME;

        }

        @Override

        public Category getType() {

            return Category.PROCESSOR;

        }

        @Override

        public String getDescription() {

            return NAME;

        }

    }

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

        Helper helper = Helper.newHelper();

        if (helper == null) {

            System.err.println("Test not run");

            return;

        }

        helper.generateDefaultModules();

        PluginRepository.registerPlugin(new PPPlugin());

        // Generate an image and post-process in same jlink execution.

        {

            String[] userOptions = {"--pp"};

            String moduleName = "postprocessing1";

            helper.generateDefaultJModule(moduleName, "composite2");

            String[] res = {};

            String[] files = {};

            Path imageDir = helper.generateDefaultImage(userOptions, moduleName).assertSuccess();

            helper.checkImage(imageDir, moduleName, res, files);

            test(imageDir);

        }

        // Generate an image, post-process in 2 jlink executions.

        {

            String[] userOptions = {};

            String moduleName = "postprocessing2";

            helper.generateDefaultJModule(moduleName, "composite2");

            String[] res = {};

            String[] files = {};

            Path imageDir = helper.generateDefaultImage(userOptions, moduleName).assertSuccess();

            helper.checkImage(imageDir, moduleName, res, files);

            String[] ppOptions = {"--pp"};

            helper.postProcessImage(imageDir, ppOptions);

            test(imageDir);

        }

    }

    private static void test(Path imageDir)

            throws Exception {

        if (PPPlugin.called == null) {

            throw new Exception("Post processor not called.");

        }

        if (!PPPlugin.called.getHome().equals(imageDir)) {

            throw new Exception("Not right imageDir " + PPPlugin.called.getHome());

        }

        if (PPPlugin.called.getExecutionArgs().isEmpty()) {

            throw new Exception("No arguments to run java...");

        }

        Path gen = imageDir.resolve("lib").resolve("toto.txt");

        if (!Files.exists(gen)) {

            throw new Exception("Generated file doesn;t exist");

        }

        PPPlugin.called = null;

    }

}