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/*
BSD 2-Clause License

Copyright (c) 2019, Beigesoft™
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.

* 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.

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 org.beigesoft.ajetty;

import java.io.Console;
import java.util.Date;

/**
 * Command line interface to start A-Jetty.
 *
 * @author Yury Demidenko
 */
public class BootStrapCli implements IBootFace {

  /**
   * Main boot strap.
   **/
  private BootMain mainBootStrap;

  /**
   * Is exit flag.
   **/
  private boolean isExit = false;

  /**
   * Show error message.
   * @param pError message
   **/
  @Override
  public final void showError(final String pError) {
    Date dt = new Date();
    System.console().printf(dt.toString() + " "
      + this.mainBootStrap.getMsg("error") + ": " + pError + "\n");
  }

  /**
   * Refresh user interface.
   **/
  @Override
  public final void refreshUi() {
    Date dt = new Date();
    if (this.mainBootStrap.getIsActionPerforming()) {
      System.console().printf(dt.toString() + " "
        + this.mainBootStrap.getMsg("wait") + "\n");
    } else {
      if (this.mainBootStrap.getBootEmbed().getIsStarted()) {
        System.console().printf(dt.toString() + " "
            + this.mainBootStrap.getMsg("started") + " https://localhost:"
              + this.mainBootStrap.getPort() + "/bsa"
                + this.mainBootStrap.getPort() + " on A-Jetty #"
                  + this.mainBootStrap.getAjettyIn() + "\n");
      } else {
        System.console().printf(dt.toString() + " "
          + this.mainBootStrap.getMsg("stopped") + " on A-Jetty #"
            + this.mainBootStrap.getAjettyIn() + "\n");
      }
    }
  }

  /**
   * Starts interface.
   * @throws ExceptionStart ExceptionStart
   **/
  public final void startInterface() throws ExceptionStart {
    Console con = System.console();
    if (con == null) {
      throw new ExceptionStart("There is no console!!!");
    }
    CliThread ct = new CliThread();
    ct.start();
  }

  /**
   * User interface logic.
   **/
  public final void doWork() {
    if (this.mainBootStrap.getIsActionPerforming()) {
      long currDate = new Date().getTime();
      if (currDate - this.mainBootStrap.getLastActionStartDate() > 120000) {
        this.mainBootStrap.setIsActionPerforming(false);
        this.mainBootStrap.getLogger()
          .error(null, BootStrapCli.class, "Frozen!!!");
      }
    }
    if (!this.mainBootStrap.getIsActionPerforming()) {
      if (!this.mainBootStrap.getBootEmbed().getIsStarted()) {
        enterAjettyNumIfNeed();
        if (this.isExit) {
          return;
        }
        if (!this.mainBootStrap.getIsKeystoreCreated()) {
          enterKsPasswd();
          if (this.isExit) {
            return;
          }
          enterKsPasswdConf();
        } else if (this.mainBootStrap.getKsPassword() == null
          || this.mainBootStrap.getIsLastStartFail()) {
          enterKsPasswd();
        }
        if (this.isExit) {
          return;
        }
        enterPort();
        enterStartOrQuit();
      } else {
        enterStopOrQuit();
      }
    }
  }

  /**
   * Enter Start or quit logic.
   **/
  public final void enterStartOrQuit() {
    int attempts = 0;
    Console con = System.console();
    while (attempts++ < 10) {
      try {
        String wrd = con.readLine(
          this.mainBootStrap.getMsg("enter_ajetty_start"));
        if ("q".equals(wrd)) {
          this.isExit = true;
          return;
        } else if ("g".equals(wrd)) {
          this.mainBootStrap.setIsActionPerforming(true);
          this.mainBootStrap.startAjetty();
          return;
        }
      } catch (Exception e) {
        e.printStackTrace();
      }
    }
  }

  /**
   * Enter Stop or quit logic.
   **/
  public final void enterStopOrQuit() {
    int attempts = 0;
    Console con = System.console();
    while (attempts++ < 10) {
      try {
        String wrd = con
          .readLine(this.mainBootStrap.getMsg("enter_ajetty_stop"));
        if ("q".equals(wrd)) {
          this.isExit = true;
          this.mainBootStrap.setIsActionPerforming(true);
          this.mainBootStrap.stopAjetty();
          return;
        } else if ("s".equals(wrd)) {
          this.mainBootStrap.setIsActionPerforming(true);
          this.mainBootStrap.stopAjetty();
          return;
        }
      } catch (ExceptionStart e) {
        e.printStackTrace();
      }
    }
  }

  /**
   * Enter A-Jetty number logic.
   **/
  public final void enterAjettyNumIfNeed() {
    int attempts = 0;
    Console con = System.console();
    while (!this.isExit && this.mainBootStrap.getAjettyIn() == null) {
      try {
        String wrd = con.readLine(this.mainBootStrap.getMsg("enter_ajetty_sn"));
        if ("q".equals(wrd)) {
          this.isExit = true;
          return;
        }
        this.mainBootStrap.setAjettyIn(Integer.parseInt(wrd));
      } finally {
        if (attempts++ > 10) {
          this.isExit = true;
        }
      }
    }
  }

  /**
   * Enter port logic.
   **/
  public final void enterPort() {
    Console con = System.console();
    try {
      String port = con
        .readLine(this.mainBootStrap.getMsg("enter_ajetty_port"));
      if (port == null || port.length() == 0) {
        return;
      }
      this.mainBootStrap.setPort(Integer.parseInt(port));
    } catch (Exception e) {
      con.printf(this.mainBootStrap.getMsg("ajetty_port_def") + "\n");
    }
  }

  /**
   * Enter key-store password logic.
   **/
  public final void enterKsPasswd() {
    int attempts = 0;
    this.mainBootStrap.setKsPassword(null);
    Console con = System.console();
    while (!this.isExit && this.mainBootStrap.getKsPassword() == null) {
      try {
        char[] passwd = con
          .readPassword(this.mainBootStrap.getMsg("enter_ajetty_passwd"));
        if (passwd != null && passwd.length == 1 && passwd[0] == 'q') {
          this.isExit = true;
          return;
        }
        if (passwd != null) {
          this.mainBootStrap.setKsPassword(passwd);
        }
      } finally {
        if (attempts++ > 10) {
          this.isExit = true;
        }
      }
    }
  }

  /**
   * Enter key-store confirm password logic.
   **/
  public final void enterKsPasswdConf() {
    int attempts = 0;
    this.mainBootStrap.setKsPasswordConf(null);
    Console con = System.console();
    while (!this.isExit && this.mainBootStrap.getKsPasswordConf() == null) {
      try {
        char[] passwd = con
          .readPassword(this.mainBootStrap.getMsg("enter_ajetty_passwd_conf"));
        if (passwd != null && passwd.length == 1 && passwd[0] == 'q') {
          this.isExit = true;
          return;
        }
        if (passwd != null) {
          this.mainBootStrap.setKsPasswordConf(passwd);
        }
      } finally {
        if (attempts++ > 10) {
          this.isExit = true;
        }
      }
    }
  }

  //Inner classes:
  /**
   * Command line interface thread.
   */
  private class CliThread extends Thread {

    @Override
    public void run() {
      while (!BootStrapCli.this.isExit) {
        BootStrapCli.this.doWork();
        try {
          Thread.sleep(1000);
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
      }
    }
  };

  //SGS:
  /**
   * Getter for mainBootStrap.
   * @return BootMain
   **/
  public final BootMain getMainBootStrap() {
    return this.mainBootStrap;
  }

  /**
   * Setter for mainBootStrap.
   * @param pMainBootStrap reference
   **/
  public final void setMainBootStrap(
    final BootMain pMainBootStrap) {
    this.mainBootStrap = pMainBootStrap;
  }
}