/*
   * Check new subclass classId for validity
   * (villagemaster race/type, is not contains in previous subclasses,
   * is contains in allowed subclasses)
   * Base class not added into allowed subclasses.
   */
  private final boolean isValidNewSubClass(L2PcInstance player, int classId) {
    if (!checkVillageMaster(classId)) return false;

    final ClassId cid = ClassId.values()[classId];
    for (Iterator<SubClass> subList = iterSubClasses(player); subList.hasNext(); ) {
      SubClass sub = subList.next();
      ClassId subClassId = ClassId.values()[sub.getClassId()];

      if (subClassId.equalsOrChildOf(cid)) return false;
    }

    // get player base class
    final int currentBaseId = player.getBaseClass();
    final ClassId baseCID = ClassId.values()[currentBaseId];

    // we need 2nd occupation ID
    final int baseClassId;
    if (baseCID.level() > 2) baseClassId = baseCID.getParent().ordinal();
    else baseClassId = currentBaseId;

    Set<PlayerClass> availSubs = PlayerClass.values()[baseClassId].getAvailableSubclasses(player);
    if (availSubs == null || availSubs.isEmpty()) return false;

    boolean found = false;
    for (Iterator<PlayerClass> availSub = availSubs.iterator(); availSub.hasNext(); ) {
      PlayerClass pclass = availSub.next();
      if (pclass.ordinal() == classId) {
        found = true;
        break;
      }
    }

    return found;
  }
  /*
   * Returns list of available subclasses
   * Base class and already used subclasses removed
   */
  private final Set<PlayerClass> getAvailableSubClasses(L2PcInstance player) {
    // get player base class
    final int currentBaseId = player.getBaseClass();
    final ClassId baseCID = ClassId.values()[currentBaseId];

    // we need 2nd occupation ID
    final int baseClassId;
    if (baseCID.level() > 2) baseClassId = baseCID.getParent().ordinal();
    else baseClassId = currentBaseId;

    /**
     * If the race of your main class is Elf or Dark Elf, you may not select each class as a
     * subclass to the other class.
     *
     * <p>If the race of your main class is Kamael, you may not subclass any other race If the race
     * of your main class is NOT Kamael, you may not subclass any Kamael class
     *
     * <p>You may not select Overlord and Warsmith class as a subclass.
     *
     * <p>You may not select a similar class as the subclass. The occupations classified as similar
     * classes are as follows:
     *
     * <p>Treasure Hunter, Plainswalker and Abyss Walker Hawkeye, Silver Ranger and Phantom Ranger
     * Paladin, Dark Avenger, Temple Knight and Shillien Knight Warlocks, Elemental Summoner and
     * Phantom Summoner Elder and Shillien Elder Swordsinger and Bladedancer Sorcerer, Spellsinger
     * and Spellhowler
     *
     * <p>Also, Kamael have a special, hidden 4 subclass, the inspector, which can only be taken if
     * you have already completed the other two Kamael subclasses
     */
    Set<PlayerClass> availSubs = PlayerClass.values()[baseClassId].getAvailableSubclasses(player);

    if (availSubs != null && !availSubs.isEmpty()) {
      for (Iterator<PlayerClass> availSub = availSubs.iterator(); availSub.hasNext(); ) {
        PlayerClass pclass = availSub.next();

        // check for the village master
        if (!checkVillageMaster(pclass)) {
          availSub.remove();
          continue;
        }

        // scan for already used subclasses
        int availClassId = pclass.ordinal();
        ClassId cid = ClassId.values()[availClassId];
        for (Iterator<SubClass> subList = iterSubClasses(player); subList.hasNext(); ) {
          SubClass prevSubClass = subList.next();
          ClassId subClassId = ClassId.values()[prevSubClass.getClassId()];

          if (subClassId.equalsOrChildOf(cid)) {
            availSub.remove();
            break;
          }
        }
      }
    }

    return availSubs;
  }
  @Override
  public void onBypassFeedback(L2PcInstance player, String command) {
    String[] commandStr = command.split(" ");
    String actualCommand = commandStr[0]; // Get actual command

    String cmdParams = "";
    String cmdParams2 = "";

    if (commandStr.length >= 2) cmdParams = commandStr[1];
    if (commandStr.length >= 3) cmdParams2 = commandStr[2];

    if (actualCommand.equalsIgnoreCase("create_clan")) {
      if (cmdParams.isEmpty()) return;

      ClanTable.getInstance().createClan(player, cmdParams);
    } else if (actualCommand.equalsIgnoreCase("create_academy")) {
      if (cmdParams.isEmpty()) return;

      createSubPledge(player, cmdParams, null, L2Clan.SUBUNIT_ACADEMY, 5);
    } else if (actualCommand.equalsIgnoreCase("rename_pledge")) {
      if (cmdParams.isEmpty() || cmdParams2.isEmpty()) return;

      renameSubPledge(player, Integer.valueOf(cmdParams), cmdParams2);
    } else if (actualCommand.equalsIgnoreCase("create_royal")) {
      if (cmdParams.isEmpty()) return;

      createSubPledge(player, cmdParams, cmdParams2, L2Clan.SUBUNIT_ROYAL1, 6);
    } else if (actualCommand.equalsIgnoreCase("create_knight")) {
      if (cmdParams.isEmpty()) return;

      createSubPledge(player, cmdParams, cmdParams2, L2Clan.SUBUNIT_KNIGHT1, 7);
    } else if (actualCommand.equalsIgnoreCase("assign_subpl_leader")) {
      if (cmdParams.isEmpty()) return;

      assignSubPledgeLeader(player, cmdParams, cmdParams2);
    } else if (actualCommand.equalsIgnoreCase("create_ally")) {
      if (cmdParams.isEmpty()) return;

      if (player.getClan() == null)
        player.sendPacket(new SystemMessage(SystemMessageId.ONLY_CLAN_LEADER_CREATE_ALLIANCE));
      else player.getClan().createAlly(player, cmdParams);
    } else if (actualCommand.equalsIgnoreCase("dissolve_ally")) {
      player.getClan().dissolveAlly(player);
    } else if (actualCommand.equalsIgnoreCase("dissolve_clan")) {
      dissolveClan(player, player.getClanId());
    } else if (actualCommand.equalsIgnoreCase("change_clan_leader")) {
      if (cmdParams.isEmpty()) return;

      changeClanLeader(player, cmdParams);
    } else if (actualCommand.equalsIgnoreCase("recover_clan")) {
      recoverClan(player, player.getClanId());
    } else if (actualCommand.equalsIgnoreCase("increase_clan_level")) {
      if (player.getClan().levelUpClan(player)) {
        player.broadcastPacket(new MagicSkillUse(player, 5103, 1, 0, 0));
        player.broadcastPacket(new MagicSkillLaunched(player, 5103, 1));
      }
    } else if (actualCommand.equalsIgnoreCase("learn_clan_skills")) {
      showPledgeSkillList(player);
    } else if (command.startsWith("Subclass")) {
      // Subclasses may not be changed while a skill is in use.
      if (player.isCastingNow() || player.isAllSkillsDisabled()) {
        player.sendPacket(
            new SystemMessage(SystemMessageId.SUBCLASS_NO_CHANGE_OR_CREATE_WHILE_SKILL_IN_USE));
        return;
      }

      NpcHtmlMessage html = new NpcHtmlMessage(getObjectId());

      if (player.getTransformation() != null) {
        html.setFile(player.getHtmlPrefix(), "data/html/villagemaster/SubClass_NoTransformed.htm");
        player.sendPacket(html);
        return;
      }

      int cmdChoice = 0;
      int paramOne = 0;
      int paramTwo = 0;

      try {
        cmdChoice = Integer.parseInt(command.substring(9, 10).trim());

        int endIndex = command.indexOf(' ', 11);
        if (endIndex == -1) endIndex = command.length();

        paramOne = Integer.parseInt(command.substring(11, endIndex).trim());
        if (command.length() > endIndex)
          paramTwo = Integer.parseInt(command.substring(endIndex).trim());
      } catch (Exception NumberFormatException) {
      }

      switch (cmdChoice) {
        case 0: // Subclass change menu
          html.setFile(player.getHtmlPrefix(), getSubClassMenu(player.getRace()));
          break;
        case 1: // Add Subclass - Initial
          // Avoid giving player an option to add a new sub class, if they have three already.
          if (player.getTotalSubClasses() >= Config.MAX_SUBCLASS) {
            html.setFile(player.getHtmlPrefix(), getSubClassFail());
            break;
          }

          html.setFile(player.getHtmlPrefix(), "data/html/villagemaster/SubClass_Add.htm");
          final StringBuilder content1 = StringUtil.startAppend(200);
          Set<PlayerClass> subsAvailable = getAvailableSubClasses(player);

          if (subsAvailable != null && !subsAvailable.isEmpty()) {
            for (PlayerClass subClass : subsAvailable) {
              StringUtil.append(
                  content1,
                  "<a action=\"bypass -h npc_%objectId%_Subclass 4 ",
                  String.valueOf(subClass.ordinal()),
                  "\" msg=\"1268;",
                  formatClassForDisplay(subClass),
                  "\">",
                  formatClassForDisplay(subClass),
                  "</a><br>");
            }
          } else {
            // TODO: Retail message
            player.sendMessage("There are no sub classes available at this time.");
            return;
          }
          html.replace("%list%", content1.toString());
          break;
        case 2: // Change Class - Initial
          if (player.getSubClasses().isEmpty())
            html.setFile(player.getHtmlPrefix(), "data/html/villagemaster/SubClass_ChangeNo.htm");
          else {
            final StringBuilder content2 = StringUtil.startAppend(200);

            if (checkVillageMaster(player.getBaseClass())) {
              StringUtil.append(
                  content2,
                  "<a action=\"bypass -h npc_%objectId%_Subclass 5 0\">",
                  CharTemplateTable.getInstance().getClassNameById(player.getBaseClass()),
                  "</a><br>");
            }

            for (Iterator<SubClass> subList = iterSubClasses(player); subList.hasNext(); ) {
              SubClass subClass = subList.next();
              if (checkVillageMaster(subClass.getClassDefinition())) {
                StringUtil.append(
                    content2,
                    "<a action=\"bypass -h npc_%objectId%_Subclass 5 ",
                    String.valueOf(subClass.getClassIndex()),
                    "\">",
                    formatClassForDisplay(subClass.getClassDefinition()),
                    "</a><br>");
              }
            }

            if (content2.length() > 0) {
              html.setFile(player.getHtmlPrefix(), "data/html/villagemaster/SubClass_Change.htm");
              html.replace("%list%", content2.toString());
            } else
              html.setFile(
                  player.getHtmlPrefix(), "data/html/villagemaster/SubClass_ChangeNotFound.htm");
          }
          break;
        case 3: // Change/Cancel Subclass - Initial
          if (player.getSubClasses() == null || player.getSubClasses().isEmpty()) {
            html.setFile(
                player.getHtmlPrefix(), "data/html/villagemaster/SubClass_ModifyEmpty.htm");
            break;
          }

          // custom value
          if (player.getTotalSubClasses() > 3) {
            html.setFile(
                player.getHtmlPrefix(), "data/html/villagemaster/SubClass_ModifyCustom.htm");
            final StringBuilder content3 = StringUtil.startAppend(200);
            int classIndex = 1;

            for (Iterator<SubClass> subList = iterSubClasses(player); subList.hasNext(); ) {
              SubClass subClass = subList.next();

              StringUtil.append(
                  content3,
                  "Sub-class ",
                  String.valueOf(classIndex++),
                  "<br>",
                  "<a action=\"bypass -h npc_%objectId%_Subclass 6 ",
                  String.valueOf(subClass.getClassIndex()),
                  "\">",
                  CharTemplateTable.getInstance().getClassNameById(subClass.getClassId()),
                  "</a><br>");
            }
            html.replace("%list%", content3.toString());
          } else {
            // retail html contain only 3 subclasses
            html.setFile(player.getHtmlPrefix(), "data/html/villagemaster/SubClass_Modify.htm");
            if (player.getSubClasses().containsKey(1))
              html.replace(
                  "%sub1%",
                  CharTemplateTable.getInstance()
                      .getClassNameById(player.getSubClasses().get(1).getClassId()));
            else
              html.replace(
                  "<a action=\"bypass -h npc_%objectId%_Subclass 6 1\">%sub1%</a><br>", "");

            if (player.getSubClasses().containsKey(2))
              html.replace(
                  "%sub2%",
                  CharTemplateTable.getInstance()
                      .getClassNameById(player.getSubClasses().get(2).getClassId()));
            else
              html.replace(
                  "<a action=\"bypass -h npc_%objectId%_Subclass 6 2\">%sub2%</a><br>", "");

            if (player.getSubClasses().containsKey(3))
              html.replace(
                  "%sub3%",
                  CharTemplateTable.getInstance()
                      .getClassNameById(player.getSubClasses().get(3).getClassId()));
            else
              html.replace(
                  "<a action=\"bypass -h npc_%objectId%_Subclass 6 3\">%sub3%</a><br>", "");
          }
          break;
        case 4: // Add Subclass - Action (Subclass 4 x[x])
          /*
           * If the character is less than level 75 on any of their previously chosen
           * classes then disallow them to change to their most recently added sub-class choice.
           */

          if (!player.getFloodProtectors().getSubclass().tryPerformAction("add subclass")) {
            _log.warning(
                "Player " + player.getName() + " has performed a subclass change too fast");
            return;
          }

          boolean allowAddition = true;

          if (player.getTotalSubClasses() >= Config.MAX_SUBCLASS) allowAddition = false;

          if (player.getLevel() < 75) allowAddition = false;

          if (allowAddition) {
            if (!player.getSubClasses().isEmpty()) {
              for (Iterator<SubClass> subList = iterSubClasses(player); subList.hasNext(); ) {
                SubClass subClass = subList.next();

                if (subClass.getLevel() < 75) {
                  allowAddition = false;
                  break;
                }
              }
            }
          }

          /*
           * If quest checking is enabled, verify if the character has completed the Mimir's Elixir (Path to Subclass)
           * and Fate's Whisper (A Grade Weapon) quests by checking for instances of their unique reward items.
           *
           * If they both exist, remove both unique items and continue with adding the sub-class.
           */
          if (allowAddition && !Config.ALT_GAME_SUBCLASS_WITHOUT_QUESTS)
            allowAddition = checkQuests(player);

          if (allowAddition && isValidNewSubClass(player, paramOne)) {
            if (!player.addSubClass(paramOne, player.getTotalSubClasses() + 1)) return;

            player.setActiveClass(player.getTotalSubClasses());

            html.setFile(player.getHtmlPrefix(), "data/html/villagemaster/SubClass_AddOk.htm");

            player.sendPacket(
                new SystemMessage(SystemMessageId.ADD_NEW_SUBCLASS)); // Subclass added.
          } else html.setFile(player.getHtmlPrefix(), getSubClassFail());
          break;
        case 5: // Change Class - Action
          /*
           * If the character is less than level 75 on any of their previously chosen
           * classes then disallow them to change to their most recently added sub-class choice.
           *
           * Note: paramOne = classIndex
           */

          if (!player.getFloodProtectors().getSubclass().tryPerformAction("change class")) {
            _log.warning(
                "Player " + player.getName() + " has performed a subclass change too fast");
            return;
          }

          if (player.getClassIndex() == paramOne) {
            html.setFile(player.getHtmlPrefix(), "data/html/villagemaster/SubClass_Current.htm");
            break;
          }

          if (paramOne == 0) {
            if (!checkVillageMaster(player.getBaseClass())) return;
          } else {
            try {
              if (!checkVillageMaster(player.getSubClasses().get(paramOne).getClassDefinition()))
                return;
            } catch (NullPointerException e) {
              return;
            }
          }

          player.setActiveClass(paramOne);

          player.sendPacket(
              new SystemMessage(
                  SystemMessageId.SUBCLASS_TRANSFER_COMPLETED)); // Transfer completed.
          return;
        case 6: // Change/Cancel Subclass - Choice
          // validity check
          if (paramOne < 1 || paramOne > Config.MAX_SUBCLASS) return;

          subsAvailable = getAvailableSubClasses(player);

          // another validity check
          if (subsAvailable == null || subsAvailable.isEmpty()) {
            // TODO: Retail message
            player.sendMessage("There are no sub classes available at this time.");
            return;
          }

          final StringBuilder content6 = StringUtil.startAppend(200);

          for (PlayerClass subClass : subsAvailable) {
            StringUtil.append(
                content6,
                "<a action=\"bypass -h npc_%objectId%_Subclass 7 ",
                String.valueOf(paramOne),
                " ",
                String.valueOf(subClass.ordinal()),
                "\" msg=\"1445;",
                "\">",
                formatClassForDisplay(subClass),
                "</a><br>");
          }

          switch (paramOne) {
            case 1:
              html.setFile(
                  player.getHtmlPrefix(), "data/html/villagemaster/SubClass_ModifyChoice1.htm");
              break;
            case 2:
              html.setFile(
                  player.getHtmlPrefix(), "data/html/villagemaster/SubClass_ModifyChoice2.htm");
              break;
            case 3:
              html.setFile(
                  player.getHtmlPrefix(), "data/html/villagemaster/SubClass_ModifyChoice3.htm");
              break;
            default:
              html.setFile(
                  player.getHtmlPrefix(), "data/html/villagemaster/SubClass_ModifyChoice.htm");
          }
          html.replace("%list%", content6.toString());
          break;
        case 7: // Change Subclass - Action
          /*
           * Warning: the information about this subclass will be removed from the
           * subclass list even if false!
           */

          if (!player.getFloodProtectors().getSubclass().tryPerformAction("change class")) {
            _log.warning(
                "Player " + player.getName() + " has performed a subclass change too fast");
            return;
          }

          if (!isValidNewSubClass(player, paramTwo)) return;

          if (player.modifySubClass(paramOne, paramTwo)) {
            player.abortCast();
            player
                .stopAllEffectsExceptThoseThatLastThroughDeath(); // all effects from old subclass
                                                                  // stopped!
            player.stopCubics();
            player.setActiveClass(paramOne);

            html.setFile(player.getHtmlPrefix(), "data/html/villagemaster/SubClass_ModifyOk.htm");
            html.replace("%name%", CharTemplateTable.getInstance().getClassNameById(paramTwo));

            player.sendPacket(
                new SystemMessage(SystemMessageId.ADD_NEW_SUBCLASS)); // Subclass added.
          } else {
            /*
             * This isn't good! modifySubClass() removed subclass from memory
             * we must update _classIndex! Else IndexOutOfBoundsException can turn
             * up some place down the line along with other seemingly unrelated
             * problems.
             */
            player.setActiveClass(
                0); // Also updates _classIndex plus switching _classid to baseclass.

            player.sendMessage(
                "The sub class could not be added, you have been reverted to your base class.");
            return;
          }
          break;
      }

      html.replace("%objectId%", String.valueOf(getObjectId()));
      player.sendPacket(html);
    } else {
      // this class dont know any other commands, let forward
      // the command to the parent class
      super.onBypassFeedback(player, command);
    }
  }