AlgorithmLX

public class ClearCommand extends ListenerAdapter implements ICommand {
    public void onGuildMessageReceived(GuildMessageReceivedEvent event) {
        String[] args = event.getMessage().getContentRaw().split("\\s+");
        if (args[0].equalsIgnoreCase(Config.get("prefix") + "clear")) {
            if (args.length < 2) {
                // Usage
                EmbedBuilder usage = new EmbedBuilder();
                usage.setColor(0xff3923);
                usage.setTitle("Specify amount to delete");
                usage.setDescription("Usage: `" +"ваш префикс" + "clear [# of messages]`");
                event.getChannel().sendMessage(usage.build()).queue();

            }
            else {
                try {
                    List<Message> messages = event.getChannel().getHistory().retrievePast(Integer.parseInt(args[1])).complete();
                    event.getChannel().deleteMessages(messages).queue();

                    // Success
                    EmbedBuilder success = new EmbedBuilder();
                    success.setColor(0x22ff2a);
                    success.setTitle("✅ Successfully deleted " + args[1] + " messages.");
                    event.getChannel().sendMessage(success.build()).queue();
                }
                catch (IllegalArgumentException e) {
                    if (e.toString().startsWith("java.lang.IllegalArgumentException: Message retrieval")) {
                        // Too many messages
                        EmbedBuilder error = new EmbedBuilder();
                        error.setColor(0xff3923);
                        error.setTitle(" Too many messages selected");
                        error.setDescription("Between 1-100 messages can be deleted at one time.");
                        event.getChannel().sendMessage(error.build()).queue();
                    }
                    else {
                        // Messages too old
                        EmbedBuilder error = new EmbedBuilder();
                        error.setColor(0xff3923);
                        error.setTitle(" Selected messages are older than 2 weeks");
                        error.setDescription("Messages older than 2 weeks cannot be deleted.");
                        event.getChannel().sendMessage(error.build()).queue();
                    }
                }
            }
        }
    }
}