/*

 * Copyright (c) 2015, 2019, 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.jpackage.internal;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.io.UncheckedIOException;

import java.io.Writer;

import java.io.BufferedWriter;

import java.io.FileWriter;

import java.nio.charset.StandardCharsets;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.StandardCopyOption;

import java.nio.file.attribute.PosixFilePermission;

import java.text.MessageFormat;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.Objects;

import java.util.ResourceBundle;

import java.util.Set;

import java.util.concurrent.atomic.AtomicReference;

import java.util.regex.Pattern;

import java.util.stream.Stream;

import static jdk.jpackage.internal.StandardBundlerParam.*;

public class WindowsAppImageBuilder extends AbstractAppImageBuilder {

    static {

        System.loadLibrary("jpackage");

    }

    private static final ResourceBundle I18N = ResourceBundle.getBundle(

            "jdk.jpackage.internal.resources.WinResources");

    private final static String LIBRARY_NAME = "applauncher.dll";

    private final static String REDIST_MSVCR = "vcruntimeVS_VER.dll";

    private final static String REDIST_MSVCP = "msvcpVS_VER.dll";

    private final static String TEMPLATE_APP_ICON ="java48.ico";

    private static final String EXECUTABLE_PROPERTIES_TEMPLATE =

            "WinLauncher.template";

    private final Path root;

    private final Path appDir;

    private final Path appModsDir;

    private final Path runtimeDir;

    private final Path mdir;

    private final Path binDir;

    public static final BundlerParamInfo<Boolean> REBRAND_EXECUTABLE =

            new WindowsBundlerParam<>(

            "win.launcher.rebrand",

            Boolean.class,

            params -> Boolean.TRUE,

            (s, p) -> Boolean.valueOf(s));

    public static final BundlerParamInfo<File> ICON_ICO =

            new StandardBundlerParam<>(

            "icon.ico",

            File.class,

            params -> {

                File f = ICON.fetchFrom(params);

                if (f != null && !f.getName().toLowerCase().endsWith(".ico")) {

                    Log.error(MessageFormat.format(

                            I18N.getString("message.icon-not-ico"), f));

                    return null;

                }

                return f;

            },

            (s, p) -> new File(s));

    public static final StandardBundlerParam<Boolean> CONSOLE_HINT =

            new WindowsBundlerParam<>(

            Arguments.CLIOptions.WIN_CONSOLE_HINT.getId(),

            Boolean.class,

            params -> false,

            // valueOf(null) is false,

            // and we actually do want null in some cases

            (s, p) -> (s == null

            || "null".equalsIgnoreCase(s)) ? true : Boolean.valueOf(s));

    public WindowsAppImageBuilder(Map<String, Object> params, Path imageOutDir)

            throws IOException {

        super(params,

                imageOutDir.resolve(APP_NAME.fetchFrom(params) + "/runtime"));

        Objects.requireNonNull(imageOutDir);

        this.root = imageOutDir.resolve(APP_NAME.fetchFrom(params));

        this.appDir = root.resolve("app");

        this.appModsDir = appDir.resolve("mods");

        this.runtimeDir = root.resolve("runtime");

        this.mdir = runtimeDir.resolve("lib");

        this.binDir = root;

        Files.createDirectories(appDir);

        Files.createDirectories(runtimeDir);

    }

    private void writeEntry(InputStream in, Path dstFile) throws IOException {

        Files.createDirectories(dstFile.getParent());

        Files.copy(in, dstFile);

    }

    private static String getLauncherName(Map<String, ? super Object> params) {

        return APP_NAME.fetchFrom(params) + ".exe";

    }

    // Returns launcher resource name for launcher we need to use.

    public static String getLauncherResourceName(

            Map<String, ? super Object> params) {

        if (CONSOLE_HINT.fetchFrom(params)) {

            return "jpackageapplauncher.exe";

        } else {

            return "jpackageapplauncherw.exe";

        }

    }

    public static String getLauncherCfgName(

            Map<String, ? super Object> params) {

        return "app/" + APP_NAME.fetchFrom(params) +".cfg";

    }

    private File getConfig_AppIcon(Map<String, ? super Object> params) {

        return new File(getConfigRoot(params),

                APP_NAME.fetchFrom(params) + ".ico");

    }

    private File getConfig_ExecutableProperties(

           Map<String, ? super Object> params) {

        return new File(getConfigRoot(params),

                APP_NAME.fetchFrom(params) + ".properties");

    }

    File getConfigRoot(Map<String, ? super Object> params) {

        return CONFIG_ROOT.fetchFrom(params);

    }

    @Override

    public Path getAppDir() {

        return appDir;

    }

    @Override

    public Path getAppModsDir() {

        return appModsDir;

    }

    @Override

    public void prepareApplicationFiles(Map<String, ? super Object> params)

            throws IOException {

        Map<String, ? super Object> originalParams = new HashMap<>(params);

        try {

            IOUtils.writableOutputDir(root);

            IOUtils.writableOutputDir(binDir);

        } catch (PackagerException pe) {

            throw new RuntimeException(pe);

        }

        AppImageFile.save(root, params);

        // create the .exe launchers

        createLauncherForEntryPoint(params);

        // copy the jars

        copyApplication(params);

        // copy in the needed libraries

        try (InputStream is_lib = getResourceAsStream(LIBRARY_NAME)) {

            Files.copy(is_lib, binDir.resolve(LIBRARY_NAME));

        }

        copyMSVCDLLs();

        // create the additional launcher(s), if any

        List<Map<String, ? super Object>> entryPoints =

                StandardBundlerParam.ADD_LAUNCHERS.fetchFrom(params);

        for (Map<String, ? super Object> entryPoint : entryPoints) {

            createLauncherForEntryPoint(

                    AddLauncherArguments.merge(originalParams, entryPoint));

        }

    }

    @Override

    public void prepareJreFiles(Map<String, ? super Object> params)

        throws IOException {}

    private void copyMSVCDLLs() throws IOException {

        AtomicReference<IOException> ioe = new AtomicReference<>();

        try (Stream<Path> files = Files.list(runtimeDir.resolve("bin"))) {

            files.filter(p -> Pattern.matches(

                    "^(vcruntime|msvcp|msvcr|ucrtbase|api-ms-win-).*\\.dll$",

                    p.toFile().getName().toLowerCase()))

                 .forEach(p -> {

                    try {

                        Files.copy(p, binDir.resolve((p.toFile().getName())));

                    } catch (IOException e) {

                        ioe.set(e);

                    }

                });

        }

        IOException e = ioe.get();

        if (e != null) {

            throw e;

        }

    }

    private void validateValueAndPut(

            Map<String, String> data, String key,

            BundlerParamInfo<String> param,

            Map<String, ? super Object> params) {

        String value = param.fetchFrom(params);

        if (value.contains("\r") || value.contains("\n")) {

            Log.error("Configuration Parameter " + param.getID()

                    + " contains multiple lines of text, ignore it");

            data.put(key, "");

            return;

        }

        data.put(key, value);

    }

    protected void prepareExecutableProperties(

           Map<String, ? super Object> params) throws IOException {

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

        // mapping Java parameters in strings for version resource

        validateValueAndPut(data, "COMPANY_NAME", VENDOR, params);

        validateValueAndPut(data, "FILE_DESCRIPTION", DESCRIPTION, params);

        validateValueAndPut(data, "FILE_VERSION", VERSION, params);

        data.put("INTERNAL_NAME", getLauncherName(params));

        validateValueAndPut(data, "LEGAL_COPYRIGHT", COPYRIGHT, params);

        data.put("ORIGINAL_FILENAME", getLauncherName(params));

        validateValueAndPut(data, "PRODUCT_NAME", APP_NAME, params);

        validateValueAndPut(data, "PRODUCT_VERSION", VERSION, params);

    }

    private void createLauncherForEntryPoint(

            Map<String, ? super Object> params) throws IOException {

        File iconTarget = getConfig_AppIcon(params);

        writeCfgFile(params, root.resolve(

                getLauncherCfgName(params)).toFile());

        prepareExecutableProperties(params);

        // Copy executable to bin folder

        Path executableFile = binDir.resolve(getLauncherName(params));

        try (InputStream is_launcher =

                getResourceAsStream(getLauncherResourceName(params))) {

            writeEntry(is_launcher, executableFile);

        }

        File launcher = executableFile.toFile();

        launcher.setWritable(true, true);

        // Update branding of EXE file

        if (REBRAND_EXECUTABLE.fetchFrom(params)) {

            try {

                String tempDirectory = WindowsDefender.getUserTempDirectory();

                if (Arguments.CLIOptions.context().userProvidedBuildRoot) {

                    tempDirectory =

                            TEMP_ROOT.fetchFrom(params).getAbsolutePath();

                }

                if (WindowsDefender.isThereAPotentialWindowsDefenderIssue(

                        tempDirectory)) {

                    Log.error(MessageFormat.format(I18N.getString(

                            "message.potential.windows.defender.issue"),

                            tempDirectory));

                }

                launcher.setWritable(true);

                if (iconTarget.exists()) {

                    iconSwap(iconTarget.getAbsolutePath(),

                            launcher.getAbsolutePath());

                }

                File executableProperties =

                        getConfig_ExecutableProperties(params);

                if (executableProperties.exists()) {

                    if (versionSwap(executableProperties.getAbsolutePath(),

                            launcher.getAbsolutePath()) != 0) {

                        throw new RuntimeException(MessageFormat.format(

                                I18N.getString("error.version-swap"),

                                executableProperties.getAbsolutePath()));

                    }

                }

            } finally {

                executableFile.toFile().setExecutable(true);

                executableFile.toFile().setReadOnly();

            }

        }

        Files.copy(iconTarget.toPath(),

                binDir.resolve(APP_NAME.fetchFrom(params) + ".ico"));

    }

    private void copyApplication(Map<String, ? super Object> params)

            throws IOException {

        List<RelativeFileSet> appResourcesList =

                APP_RESOURCES_LIST.fetchFrom(params);

        if (appResourcesList == null) {

            throw new RuntimeException("Null app resources?");

        }

        for (RelativeFileSet appResources : appResourcesList) {

            if (appResources == null) {

                throw new RuntimeException("Null app resources?");

            }

            File srcdir = appResources.getBaseDirectory();

            for (String fname : appResources.getIncludedFiles()) {

                copyEntry(appDir, srcdir, fname);

            }

        }

    }

    private static native int iconSwap(String iconTarget, String launcher);

    private static native int versionSwap(String executableProperties,

            String launcher);

}