/*

 * Copyright (c) 2012, 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

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

 * questions.

 */

package jdk.jpackage.internal;

import java.io.*;

import java.nio.file.Files;

import java.text.MessageFormat;

import java.util.*;

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

public class MacDmgBundler extends MacBaseInstallerBundler {

    private static final ResourceBundle I18N = ResourceBundle.getBundle(

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

    static final String DEFAULT_BACKGROUND_IMAGE="background_dmg.png";

    static final String DEFAULT_DMG_SETUP_SCRIPT="DMGsetup.scpt";

    static final String TEMPLATE_BUNDLE_ICON = "java.icns";

    static final String DEFAULT_LICENSE_PLIST="lic_template.plist";

    public static final BundlerParamInfo<String> INSTALLER_SUFFIX =

            new StandardBundlerParam<> (

            "mac.dmg.installerName.suffix",

            String.class,

            params -> "",

            (s, p) -> s);

    public File bundle(Map<String, ? super Object> params,

            File outdir) throws PackagerException {

        Log.verbose(MessageFormat.format(I18N.getString("message.building-dmg"),

                APP_NAME.fetchFrom(params)));

        IOUtils.writableOutputDir(outdir.toPath());

        File appImageDir = APP_IMAGE_TEMP_ROOT.fetchFrom(params);

        try {

            appImageDir.mkdirs();

            if (prepareAppBundle(params) != null &&

                    prepareConfigFiles(params)) {

                File configScript = getConfig_Script(params);

                if (configScript.exists()) {

                    Log.verbose(MessageFormat.format(

                            I18N.getString("message.running-script"),

                            configScript.getAbsolutePath()));

                    IOUtils.run("bash", configScript);

                }

                return buildDMG(params, outdir);

            }

            return null;

        } catch (IOException ex) {

            Log.verbose(ex);

            throw new PackagerException(ex);

        }

    }

    private static final String hdiutil = "/usr/bin/hdiutil";

    private void prepareDMGSetupScript(String volumeName,

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

        File dmgSetup = getConfig_VolumeScript(params);

        Log.verbose(MessageFormat.format(

                I18N.getString("message.preparing-dmg-setup"),

                dmgSetup.getAbsolutePath()));

        //prepare config for exe

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

        data.put("DEPLOY_ACTUAL_VOLUME_NAME", volumeName);

        data.put("DEPLOY_APPLICATION_NAME", APP_NAME.fetchFrom(params));

        data.put("DEPLOY_INSTALL_LOCATION", "(path to applications folder)");

        data.put("DEPLOY_INSTALL_NAME", "Applications");

        try (Writer w = Files.newBufferedWriter(dmgSetup.toPath())) {

            w.write(preprocessTextResource(dmgSetup.getName(),

                    I18N.getString("resource.dmg-setup-script"),

                    DEFAULT_DMG_SETUP_SCRIPT, data, VERBOSE.fetchFrom(params),

                    RESOURCE_DIR.fetchFrom(params)));

        }

    }

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

        return new File(CONFIG_ROOT.fetchFrom(params),

                APP_NAME.fetchFrom(params) + "-dmg-setup.scpt");

    }

    private File getConfig_VolumeBackground(

            Map<String, ? super Object> params) {

        return new File(CONFIG_ROOT.fetchFrom(params),

                APP_NAME.fetchFrom(params) + "-background.png");

    }

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

        return new File(CONFIG_ROOT.fetchFrom(params),

                APP_NAME.fetchFrom(params) + "-volume.icns");

    }

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

        return new File(CONFIG_ROOT.fetchFrom(params),

                APP_NAME.fetchFrom(params) + "-license.plist");

    }

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

        try {

            String licFileStr = LICENSE_FILE.fetchFrom(params);

            if (licFileStr == null) {

                return;

            }

            File licFile = new File(licFileStr);

            byte[] licenseContentOriginal =

                    Files.readAllBytes(licFile.toPath());

            String licenseInBase64 =

                    Base64.getEncoder().encodeToString(licenseContentOriginal);

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

            data.put("APPLICATION_LICENSE_TEXT", licenseInBase64);

            try (Writer w = Files.newBufferedWriter(

                    getConfig_LicenseFile(params).toPath())) {

                w.write(preprocessTextResource(

                        getConfig_LicenseFile(params).getName(),

                        I18N.getString("resource.license-setup"),

                        DEFAULT_LICENSE_PLIST, data, VERBOSE.fetchFrom(params),

                        RESOURCE_DIR.fetchFrom(params)));

            }

        } catch (IOException ex) {

            Log.verbose(ex);

        }

    }

    private boolean prepareConfigFiles(Map<String, ? super Object> params)

            throws IOException {

        File bgTarget = getConfig_VolumeBackground(params);

        fetchResource(bgTarget.getName(),

                I18N.getString("resource.dmg-background"),

                DEFAULT_BACKGROUND_IMAGE,

                bgTarget,

                VERBOSE.fetchFrom(params),

                RESOURCE_DIR.fetchFrom(params));

        File iconTarget = getConfig_VolumeIcon(params);

        if (MacAppBundler.ICON_ICNS.fetchFrom(params) == null ||

                !MacAppBundler.ICON_ICNS.fetchFrom(params).exists()) {

            fetchResource(iconTarget.getName(),

                    I18N.getString("resource.volume-icon"),

                    TEMPLATE_BUNDLE_ICON,

                    iconTarget,

                    VERBOSE.fetchFrom(params),

                    RESOURCE_DIR.fetchFrom(params));

        } else {

            fetchResource(iconTarget.getName(),

                    I18N.getString("resource.volume-icon"),

                    MacAppBundler.ICON_ICNS.fetchFrom(params),

                    iconTarget,

                    VERBOSE.fetchFrom(params),

                    RESOURCE_DIR.fetchFrom(params));

        }

        fetchResource(getConfig_Script(params).getName(),

                I18N.getString("resource.post-install-script"),

                (String) null,

                getConfig_Script(params),

                VERBOSE.fetchFrom(params),

                RESOURCE_DIR.fetchFrom(params));

        prepareLicense(params);

        // In theory we need to extract name from results of attach command

        // However, this will be a problem for customization as name will

        // possibly change every time and developer will not be able to fix it

        // As we are using tmp dir chance we get "different" name are low =>

        // Use fixed name we used for bundle

        prepareDMGSetupScript(APP_NAME.fetchFrom(params), params);

        return true;

    }

    // name of post-image script

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

        return new File(CONFIG_ROOT.fetchFrom(params),

                APP_NAME.fetchFrom(params) + "-post-image.sh");

    }

    // Location of SetFile utility may be different depending on MacOS version

    // We look for several known places and if none of them work will

    // try ot find it

    private String findSetFileUtility() {

        String typicalPaths[] = {"/Developer/Tools/SetFile",

                "/usr/bin/SetFile", "/Developer/usr/bin/SetFile"};

        String setFilePath = null;

        for (String path: typicalPaths) {

            File f = new File(path);

            if (f.exists() && f.canExecute()) {

                setFilePath = path;

                break;

            }

        }

        // Validate SetFile, if Xcode is not installed it will run, but exit with error

        // code

        if (setFilePath != null) {

            try {

                ProcessBuilder pb = new ProcessBuilder(setFilePath, "-h");

                Process p = pb.start();

                int code = p.waitFor();

                if (code == 0) {

                    return setFilePath;

                }

            } catch (Exception ignored) {}

            // No need for generic find attempt. We found it, but it does not work.

            // Probably due to missing xcode.

            return null;

        }

        // generic find attempt

        try {

            ProcessBuilder pb = new ProcessBuilder("xcrun", "-find", "SetFile");

            Process p = pb.start();

            InputStreamReader isr = new InputStreamReader(p.getInputStream());

            BufferedReader br = new BufferedReader(isr);

            String lineRead = br.readLine();

            if (lineRead != null) {

                File f = new File(lineRead);

                if (f.exists() && f.canExecute()) {

                    return f.getAbsolutePath();

                }

            }

        } catch (IOException ignored) {}

        return null;

    }

    private File buildDMG(

            Map<String, ? super Object> params, File outdir)

            throws IOException {

        File imagesRoot = IMAGES_ROOT.fetchFrom(params);

        if (!imagesRoot.exists()) imagesRoot.mkdirs();

        File protoDMG = new File(imagesRoot,

                APP_NAME.fetchFrom(params) +"-tmp.dmg");

        File finalDMG = new File(outdir, INSTALLER_NAME.fetchFrom(params)

                + INSTALLER_SUFFIX.fetchFrom(params) + ".dmg");

        File srcFolder = APP_IMAGE_TEMP_ROOT.fetchFrom(params);

        File predefinedImage =

                StandardBundlerParam.getPredefinedAppImage(params);

        if (predefinedImage != null) {

            srcFolder = predefinedImage;

        }

        Log.verbose(MessageFormat.format(I18N.getString(

                "message.creating-dmg-file"), finalDMG.getAbsolutePath()));

        protoDMG.delete();

        if (finalDMG.exists() && !finalDMG.delete()) {

            throw new IOException(MessageFormat.format(I18N.getString(

                    "message.dmg-cannot-be-overwritten"),

                    finalDMG.getAbsolutePath()));

        }

        protoDMG.getParentFile().mkdirs();

        finalDMG.getParentFile().mkdirs();

        String hdiUtilVerbosityFlag = VERBOSE.fetchFrom(params) ?

                "-verbose" : "-quiet";

        // create temp image

        ProcessBuilder pb = new ProcessBuilder(

                hdiutil,

                "create",

                hdiUtilVerbosityFlag,

                "-srcfolder", srcFolder.getAbsolutePath(),

                "-volname", APP_NAME.fetchFrom(params),

                "-ov", protoDMG.getAbsolutePath(),

                "-fs", "HFS+",

                "-format", "UDRW");

        IOUtils.exec(pb);

        // mount temp image

        pb = new ProcessBuilder(

                hdiutil,

                "attach",

                protoDMG.getAbsolutePath(),

                hdiUtilVerbosityFlag,

                "-mountroot", imagesRoot.getAbsolutePath());

        IOUtils.exec(pb);

        File mountedRoot = new File(imagesRoot.getAbsolutePath(),

                    APP_NAME.fetchFrom(params));

        try {

            // volume icon

            File volumeIconFile = new File(mountedRoot, ".VolumeIcon.icns");

            IOUtils.copyFile(getConfig_VolumeIcon(params),

                    volumeIconFile);

            // background image

            File bgdir = new File(mountedRoot, ".background");

            bgdir.mkdirs();

            IOUtils.copyFile(getConfig_VolumeBackground(params),

                    new File(bgdir, "background.png"));

            // Indicate that we want a custom icon

            // NB: attributes of the root directory are ignored

            // when creating the volume

            // Therefore we have to do this after we mount image

            String setFileUtility = findSetFileUtility();

            if (setFileUtility != null) {

                //can not find utility => keep going without icon

                try {

                    volumeIconFile.setWritable(true);

                    // The "creator" attribute on a file is a legacy attribute

                    // but it seems Finder excepts these bytes to be

                    // "icnC" for the volume icon

                    // (might not work on Mac 10.13 with old XCode)

                    pb = new ProcessBuilder(

                            setFileUtility,

                            "-c", "icnC",

                            volumeIconFile.getAbsolutePath());

                    IOUtils.exec(pb);

                    volumeIconFile.setReadOnly();

                    pb = new ProcessBuilder(

                            setFileUtility,

                            "-a", "C",

                            mountedRoot.getAbsolutePath());

                    IOUtils.exec(pb);

                } catch (IOException ex) {

                    Log.error(ex.getMessage());

                    Log.verbose("Cannot enable custom icon using SetFile utility");

                }

            } else {

                Log.verbose(I18N.getString("message.setfile.dmg"));

            }

            // We will not consider setting background image and creating link to

            // /Application folder in DMG as critical error, since it can fail in

            // headless enviroment.

            try {

                pb = new ProcessBuilder("osascript",

                        getConfig_VolumeScript(params).getAbsolutePath());

                IOUtils.exec(pb);

            } catch (IOException ex) {

                Log.verbose(ex);

            }

        } finally {

            // Detach the temporary image

            pb = new ProcessBuilder(

                    hdiutil,

                    "detach",

                    "-force",

                    hdiUtilVerbosityFlag,

                    mountedRoot.getAbsolutePath());

            IOUtils.exec(pb);

        }

        // Compress it to a new image

        pb = new ProcessBuilder(

                hdiutil,

                "convert",

                protoDMG.getAbsolutePath(),

                hdiUtilVerbosityFlag,

                "-format", "UDZO",

                "-o", finalDMG.getAbsolutePath());

        IOUtils.exec(pb);

        //add license if needed

        if (getConfig_LicenseFile(params).exists()) {

            //hdiutil unflatten your_image_file.dmg

            pb = new ProcessBuilder(

                    hdiutil,

                    "unflatten",

                    finalDMG.getAbsolutePath()

            );

            IOUtils.exec(pb);

            //add license

            pb = new ProcessBuilder(

                    hdiutil,

                    "udifrez",

                    finalDMG.getAbsolutePath(),

                    "-xml",

                    getConfig_LicenseFile(params).getAbsolutePath()

            );

            IOUtils.exec(pb);

            //hdiutil flatten your_image_file.dmg

            pb = new ProcessBuilder(

                    hdiutil,

                    "flatten",

                    finalDMG.getAbsolutePath()

            );

            IOUtils.exec(pb);

        }

        //Delete the temporary image

        protoDMG.delete();

        Log.verbose(MessageFormat.format(I18N.getString(

                "message.output-to-location"),

                APP_NAME.fetchFrom(params), finalDMG.getAbsolutePath()));

        return finalDMG;

    }

    //////////////////////////////////////////////////////////////////////////

    // Implement Bundler

    //////////////////////////////////////////////////////////////////////////

    @Override

    public String getName() {

        return I18N.getString("dmg.bundler.name");

    }

    @Override

    public String getID() {

        return "dmg";

    }

    @Override

    public boolean validate(Map<String, ? super Object> params)

            throws ConfigException {

        try {

            if (params == null) throw new ConfigException(

                    I18N.getString("error.parameters-null"),

                    I18N.getString("error.parameters-null.advice"));

            //run basic validation to ensure requirements are met

            //we are not interested in return code, only possible exception

            validateAppImageAndBundeler(params);

            return true;

        } catch (RuntimeException re) {

            if (re.getCause() instanceof ConfigException) {

                throw (ConfigException) re.getCause();

            } else {

                throw new ConfigException(re);

            }

        }

    }

    @Override

    public File execute(Map<String, ? super Object> params,

            File outputParentDir) throws PackagerException {

        return bundle(params, outputParentDir);

    }

    @Override

    public boolean supported(boolean runtimeInstaller) {

        return isSupported();

    }

    public final static String[] required =

            {"/usr/bin/hdiutil", "/usr/bin/osascript"};

    public static boolean isSupported() {

        try {

            for (String s : required) {

                File f = new File(s);

                if (!f.exists() || !f.canExecute()) {

                    return false;

                }

            }

            return true;

        } catch (Exception e) {

            return false;

        }

    }

    @Override

    public boolean isDefault() {

        return true;

    }

}