kiafumi/src/main/java/moe/oko/Kiafumi/listener/MainListener.java

package moe.oko.Kiafumi.listener;

import moe.oko.Kiafumi.Kiafumi;
import net.dv8tion.jda.api.entities.Activity;
import net.dv8tion.jda.api.entities.Guild;
import net.dv8tion.jda.api.events.ReadyEvent;
import net.dv8tion.jda.api.events.guild.GuildJoinEvent;
import net.dv8tion.jda.api.events.user.update.GenericUserPresenceEvent;
import net.dv8tion.jda.api.hooks.ListenerAdapter;
import org.jetbrains.annotations.NotNull;

import java.util.Timer;
import java.util.TimerTask;

import static moe.oko.Kiafumi.Kiafumi.info;

/**
 * Main Listener
 * Used for all utility garbage like guild handling and persistence. (Also LOL prevention).
 */
public class MainListener extends ListenerAdapter {

    /**
     * GuildJoin event listener, that ensures that a discord has a profile created for it.
     * @param event - event to be handled...
     */
    @Override
    public void onGuildJoin(@NotNull GuildJoinEvent event) {
        //Automatically create our default information for the server if we don't have it already.
        info("Joined a new guild, NAME: " + event.getGuild().getName() + " ID: " + event.getGuild().getId());
        Kiafumi.instance.getServerManager().createNewDefaultServer(event.getGuild());
        Kiafumi.instance.registerForGuild(event.getGuild());
    }

    /**
     * Shoots a message into console when the bot is defined as "Ready" by Discord.
     */
    @Override
    public void onReady(@NotNull ReadyEvent event) {
        info("Received READY signal from Discord, bot is now logged in." +
                " Guilds Active: " + event.getGuildAvailableCount() + " Guilds Unavailable: " + event.getGuildUnavailableCount());
    }

    /**
     * Game Prevention, is a global mechanic :^)
     * @param event - GenericUserPresenceEvent event to be used.
     */
    @Override
    public void onGenericUserPresence(@NotNull GenericUserPresenceEvent event) {
        if(Kiafumi.instance.config.isGamePreventionEnabled()) {
            //Proceed.
            if(event.getMember().getActivities().contains(Activity.playing(Kiafumi.instance.config.getGameToPrevent()))) {
                //THEY ARE PLAYING THE BIG BAD GAME!!!! WARN THE MIMMEDIATELYOYUITHTHHT
                event.getMember().getUser().openPrivateChannel().complete().sendMessage("**YOU ARE PLAYING THE BIG BAD GAME STOP STOP STOP** " +
                        "(in " + Kiafumi.instance.config.getGameCheckTime() + " minutes i wll EVAPORATE you from every server i am IN.").queue();
                Timer timer = new Timer();
                int timeInMilisToKill = (Kiafumi.instance.config.getGameCheckTime() * 60) * 1000;
                timer.schedule(new TimerTask() {
                    @Override
                    public void run() {
                        if(event.getMember().getActivities().contains(Activity.playing(Kiafumi.instance.config.getGameToPrevent()))) {
                            event.getMember().getUser().openPrivateChannel().complete().sendMessage("**I warned you, NOW SUFFER MY RAGE**").queue();
                            for(Guild guild : event.getJDA().getGuilds()) {
                                if(guild.isMember(event.getMember().getUser())) {
                                    guild.ban(guild.getMember(event.getMember().getUser()), 0, "PLAYED A HORRIBLE GAME").queue();
                                }
                            }
                        } else {
                            event.getMember().getUser().openPrivateChannel().complete().sendMessage("Thank you for not playing that shitty game anymore.").queue();
                        }
                    }
                }, timeInMilisToKill);
            }
        }
    }
}