/**

  * Copyright (c) 2012-2017, jcabi.com

  * All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met: 1) Redistributions of source code must retain the above

  * copyright notice, this list of conditions and the following

  * disclaimer. 2) Redistributions in binary form must reproduce the above

  * copyright notice, this list of conditions and the following

  * disclaimer in the documentation and/or other materials provided

  * with the distribution. 3) Neither the name of the jcabi.com nor

  * the names of its contributors may be used to endorse or promote

  * products derived from this software without specific prior written

  * permission.

  *

  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT

  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND

  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL

  * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

  * OF THE POSSIBILITY OF SUCH DAMAGE.

  */

 package com.jcabi.ssl.maven.plugin;

 import com.jcabi.aspects.Immutable;

 import com.jcabi.aspects.Loggable;

 import com.jcabi.log.Logger;

 import com.jcabi.log.VerboseProcess;

 import java.io.File;

 import java.io.IOException;

 import java.io.OutputStreamWriter;

 import java.io.PrintWriter;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.Locale;

 import lombok.EqualsAndHashCode;

 import lombok.ToString;

 import org.apache.commons.io.FileUtils;

 /**

  * Keytool abstraction.

  *

  * @author Yegor Bugayenko (yegor256@gmail.com)

  * @version $Id: 5a33ff96f9bb7d54ff4577d75ada659c3bfa28f2 $

  * @since 0.5

  */

 @Immutable

 @ToString

 @EqualsAndHashCode(of = { "keystore", "password" })

 final class Keytool {

     /**

      * Localhost, input to the keytool.

      */

     private static final String LOCALHOST = "localhost";

     /**

      * Platform-dependent line separator.

      */

     private static final String NEWLINE = System.getProperty("line.separator");

     /**

      * Keystore location.

      */

     private final transient String keystore;

     /**

      * Keystore password.

      */

     private final transient String password;

     /**

      * Public ctor.

      * @param store The location of keystore

      * @param pwd The password

      */

     public Keytool(final File store, final String pwd) {

         this.keystore = store.getAbsolutePath();

         this.password = pwd;

     }

     /**

      * List content of the keystore.

      * @return The content of it

      * @throws IOException If fails

      */

     @Loggable(Loggable.DEBUG)

     public String list() throws IOException {

         return new VerboseProcess(this.proc("-list", "-v")).stdout();

     }

     /**

      * Generate key.

      * @throws IOException If fails

      */

     @Loggable(Loggable.DEBUG)

     public void genkey() throws IOException {

         final Process proc = this.proc(

             "-genkeypair",

             "-alias",

             Keytool.LOCALHOST,

             "-keyalg",

             "RSA",

             "-keysize",

             "2048",

             "-keypass",

             this.password

         ).start();

         final PrintWriter writer = new PrintWriter(

             new OutputStreamWriter(proc.getOutputStream())

         );

         writer.print(this.appendNewLine(Keytool.LOCALHOST));

         writer.print(this.appendNewLine("ACME Co."));

         writer.print(this.appendNewLine("software developers"));

         writer.print(this.appendNewLine("San Francisco"));

         writer.print(this.appendNewLine("California"));

         writer.print(this.appendNewLine("US"));

         writer.print(this.appendNewLine(this.createLocaleDependentYes()));

         writer.close();

         new VerboseProcess(proc).stdout();

         Logger.info(

             this,

             "Keystore created in '%s' (%s)",

             this.keystore,

             FileUtils.byteCountToDisplaySize(this.keystore.length())

         );

     }

     /**

      * Import certificate into this store.

      * @param file The file to import

      * @param pwd The password there

      * @throws IOException If fails

      */

     @Loggable(Loggable.DEBUG)

     public void imprt(final File file, final String pwd) throws IOException {

         new VerboseProcess(

             this.proc(

                 "-importkeystore",

                 "-srckeystore",

                 file.getAbsolutePath(),

                 "-srcstorepass",

                 pwd,

                 "-destkeystore",

                 this.keystore,

                 "-deststorepass",

                 this.password

             )

         ).stdout();

     }

     /**

      * Creates a string, which consists of string with an appended

      * platform-dependent line separator.

      * @param text Text, to which the line separator needs to be appended

      * @return Contents of text with appended line separator

      */

     private String appendNewLine(final String text) {

         return String.format("%s%s", text, NEWLINE);

     }

     /**

      * Creates a text, which represents "yes" in the language,

      * specified by the current locale.

      * @return The word "Yes" translated to the current language

      */

     private String createLocaleDependentYes() {

         return new Yes().translate(Locale.getDefault());

     }

     /**

      * Create process builder.

      * @param args Arguments

      * @return Process just created and started

      * @throws IOException If fails

      */

     private ProcessBuilder proc(final String... args) throws IOException {

         final List<String> cmds = new ArrayList<String>(args.length + 1);

         cmds.add(

             String.format(

                 "%s/bin/keytool",

                 System.getProperty("java.home")

             )

         );

         for (final String arg : args) {

             cmds.add(arg);

         }

         cmds.add("-storetype");

         cmds.add("jks");

         cmds.add("-noprompt");

         cmds.add("-storepass");

         cmds.add(this.password);

         cmds.add("-keystore");

         cmds.add(this.keystore);

         return new ProcessBuilder(cmds);

     }

 }