Ban

commands.add(new Command("ipban", Optional.of("Ban a player and their IP by the given name or IP"), Optional.of("<player_name / player_ip>")) {
            @Override
            public void execute(Player player, CommandEntry entry) {
                String name_or_ip = Misc.formatString(entry.getArguments());

                if (!name_or_ip.contains(".")) {
                    Player other = PlayerHandler.getPlayerOnorOff(name_or_ip);
                    if (other == null) {
                        player.sendMessage("Player with the username: " + name_or_ip + " does not exist.");
                        return;
                    }

                    name_or_ip = other.connectedFrom;
                }

                Punishments punishments = World.getWorld().getPunishments();
                if (punishments.contains(PunishmentType.NET_BAN, name_or_ip)) {
                    player.sendMessage("This IP is already banned.");
                    return;
                }
                punishments.add(new Punishment(PunishmentType.NET_BAN, Long.MAX_VALUE, name_or_ip));

                String ip = name_or_ip;
                List<Player> sessions = PlayerHandler.nonNullStream().filter(s -> s.connectedFrom.equals(ip)).collect(Collectors.toList());

                for (Player session : sessions) {
                    punishments.add(new Punishment(PunishmentType.BAN, Long.MAX_VALUE, session.getName()));
                    if (World.getWorld().getMultiplayerSessionListener().inAnySession(session)) {
                        MultiplayerSession mpsession = World.getWorld().getMultiplayerSessionListener().getMultiplayerSession(session);
                        mpsession.finish(MultiplayerSessionFinalizeType.WITHDRAW_ITEMS);
                    }
                    session.disconnected = true;
                    player.sendMessage("You have successfully banned the user " + session.getName());
                }
                player.sendMessage("You have successfully banned the IP: " + ip);
            }

            @Override
            public List<String> getAliases() {
                return Arrays.asList("banip", "netban", "bannet");
            }
        });