package de.cowtipper.cowlection.command;

import com.mojang.authlib.GameProfile;
import com.mojang.authlib.properties.Property;
import com.mojang.realmsclient.util.Pair;
import de.cowtipper.cowlection.Cowlection;
import de.cowtipper.cowlection.chesttracker.ChestOverviewGui;
import de.cowtipper.cowlection.command.exception.ApiContactException;
import de.cowtipper.cowlection.command.exception.InvalidPlayerNameException;
import de.cowtipper.cowlection.command.exception.MooCommandException;
import de.cowtipper.cowlection.config.CredentialStorage;
import de.cowtipper.cowlection.config.MooConfig;
import de.cowtipper.cowlection.config.gui.MooConfigGui;
import de.cowtipper.cowlection.data.*;
import de.cowtipper.cowlection.data.HySkyBlockStats.Profile.Pet;
import de.cowtipper.cowlection.handler.DungeonCache;
import de.cowtipper.cowlection.listener.skyblock.DungeonsPartyListener;
import de.cowtipper.cowlection.partyfinder.RuleEditorGui;
import de.cowtipper.cowlection.search.GuiSearch;
import de.cowtipper.cowlection.util.*;
import net.minecraft.client.Minecraft;
import net.minecraft.client.entity.EntityOtherPlayerMP;
import net.minecraft.client.gui.GuiScreen;
import net.minecraft.client.multiplayer.WorldClient;
import net.minecraft.client.settings.GameSettings;
import net.minecraft.command.*;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.item.EntityArmorStand;
import net.minecraft.entity.item.EntityItemFrame;
import net.minecraft.event.ClickEvent;
import net.minecraft.event.HoverEvent;
import net.minecraft.init.Items;
import net.minecraft.item.EnumDyeColor;
import net.minecraft.item.ItemMap;
import net.minecraft.item.ItemSkull;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.*;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.tileentity.TileEntityBanner;
import net.minecraft.tileentity.TileEntitySign;
import net.minecraft.tileentity.TileEntitySkull;
import net.minecraft.util.*;
import net.minecraft.world.storage.MapData;
import net.minecraftforge.common.util.Constants;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang3.StringUtils;

import java.awt.*;
import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.*;
import java.util.concurrent.TimeUnit;

public class MooCommand extends CommandBase {
    private final Cowlection main;
    private DungeonsPartyListener dungeonsPartyListener;

    public MooCommand(Cowlection main) {
        this.main = main;
    }

    @Override
    public String getCommandName() {
        return "moo";
    }

    @Override
    public List<String> getCommandAliases() {
        List<String> aliases = new ArrayList<>();
        if (StringUtils.isNotEmpty(MooConfig.mooCmdAlias)) {
            aliases.add(MooConfig.mooCmdAlias);
        }
        return aliases;
    }

    @Override
    public String getCommandUsage(ICommandSender sender) {
        return "/" + getCommandName() + " help";
    }

    @Override
    public void processCommand(ICommandSender sender, String[] args) throws CommandException {
        if (args.length == 0) {
            main.getChatHelper().sendMessage(EnumChatFormatting.GOLD, "Tried to say " + EnumChatFormatting.YELLOW + getCommandName() + EnumChatFormatting.GOLD + "? Use " + EnumChatFormatting.YELLOW + getCommandName() + " say [optional text]" + EnumChatFormatting.GOLD + " instead.\n"
                    + "Tried to use the command " + EnumChatFormatting.YELLOW + "/" + getCommandName() + EnumChatFormatting.GOLD + "? Use " + EnumChatFormatting.YELLOW + "/" + getCommandName() + " help" + EnumChatFormatting.GOLD + " for a list of available commands");
        }
        //region sub commands: Best friends, friends & other players
        else if (args[0].equalsIgnoreCase("say")) {
            // work-around so you can still say 'moo' in chat without triggering the client-side command
            String msg = CommandBase.buildString(args, 1);
            Minecraft.getMinecraft().thePlayer.sendChatMessage(getCommandName() + (!msg.isEmpty() ? " " + msg : ""));
        } else if (args[0].equalsIgnoreCase("stalk")
                || args[0].equalsIgnoreCase("s")
                || args[0].equalsIgnoreCase("askPolitelyWhereTheyAre")) {
            handleStalking(args);
        } else if (args[0].equalsIgnoreCase("add")) {
            handleBestFriendAdd(args);
        } else if (args[0].equalsIgnoreCase("remove")) {
            handleBestFriendRemove(args);
        } else if (args[0].equalsIgnoreCase("list")) {
            handleListBestFriends();
        } else if (args[0].equalsIgnoreCase("online")) {
            handleBestFriendsOnlineCheck();
        } else if (args[0].equalsIgnoreCase("nameChangeCheck")) {
            handleNameChangeCheck(args);
        }
        // + toggle (= alias for config)
        //endregion
        //region sub commands: SkyBlock
        else if (args[0].equalsIgnoreCase("stalkskyblock") || args[0].equalsIgnoreCase("skyblockstalk")
                || args[0].equalsIgnoreCase("ss")
                || args[0].equalsIgnoreCase("stalksb") || args[0].equalsIgnoreCase("sbstalk")
                || args[0].equalsIgnoreCase("askPolitelyAboutTheirSkyBlockProgress")) {
            handleStalkingSkyBlock(args);
        } else if (args[0].equalsIgnoreCase("chestAnalyzer") || args[0].equalsIgnoreCase("chestAnalyser") || args[0].equalsIgnoreCase("analyzeChests") || args[0].equalsIgnoreCase("analyseChests")) {
            handleAnalyzeChests(args);
        } else if (args[0].equalsIgnoreCase("analyzeIsland") || args[0].equalsIgnoreCase("analyseIsland")) {
            handleAnalyzeIsland(sender);
        } else if (args[0].equalsIgnoreCase("waila") || args[0].equalsIgnoreCase("whatAmILookingAt")) {
            boolean showAllInfo = MooConfig.keepFullWailaInfo();
            if (args.length == 2) {
                if (args[1].equalsIgnoreCase("all")) {
                    showAllInfo = true;
                } else if (args[1].equalsIgnoreCase("main")) {
                    showAllInfo = false;
                }
            }
            handleWhatAmILookingAt(sender, showAllInfo);
        } else if (args[0].equalsIgnoreCase("dungeon") || args[0].equalsIgnoreCase("dung")
                || /* dungeon party: */ args[0].equalsIgnoreCase("dp")
                || /* dungeon party finder rules: */ args[0].equalsIgnoreCase("dr")) {
            handleDungeon(args);
        }
        //endregion
        //region sub-commands: miscellaneous
        else if (args[0].equalsIgnoreCase("config")) {
            main.getConfig().theyOpenedTheConfigGui();
            displayGuiScreen(new MooConfigGui(buildString(args, 1)));
        } else if (args[0].equalsIgnoreCase("search")) {
            displayGuiScreen(new GuiSearch(CommandBase.buildString(args, 1)));
        } else if (args[0].equalsIgnoreCase("guiscale")) {
            handleGuiScale(args);
        } else if (args[0].equalsIgnoreCase("rr")) {
            Minecraft.getMinecraft().thePlayer.sendChatMessage("/r " + CommandBase.buildString(args, 1));
        } else if (args[0].equalsIgnoreCase("shrug")) {
            main.getChatHelper().sendShrug(buildString(args, 1));
        } else if (args[0].equalsIgnoreCase("apikey")) {
            handleApiKey(args);
        } else if (args[0].equalsIgnoreCase("whatyearisit") || args[0].equalsIgnoreCase("year")) {
            long year = ((System.currentTimeMillis() - 1560275700000L) / (TimeUnit.HOURS.toMillis(124))) + 1;
            main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, "It is SkyBlock year " + EnumChatFormatting.GOLD + year + EnumChatFormatting.YELLOW + ".");
        } else if (args[0].equalsIgnoreCase("worldage") || args[0].equalsIgnoreCase("serverage")) {
            if (args.length == 2) {
                boolean enable;
                switch (args[1]) {
                    case "on":
                    case "enable":
                        enable = true;
                        break;
                    case "off":
                    case "disable":
                        enable = false;
                        break;
                    default:
                        main.getChatHelper().sendMessage(EnumChatFormatting.RED, "Command usage: /" + getCommandName() + " worldage [on|off]");
                        return;
                }
                MooConfig.notifyServerAge = enable;
                main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "✔ " + (enable ? EnumChatFormatting.DARK_GREEN + "Enabled" : EnumChatFormatting.RED + "Disabled") + EnumChatFormatting.GREEN + " world age notifications.");
                main.getConfig().syncFromFields();
            } else {
                long worldTime = Minecraft.getMinecraft().theWorld.getWorldTime();
                new TickDelay(() -> {
                    WorldClient world = Minecraft.getMinecraft().theWorld;
                    if (world == null) {
                        return;
                    }
                    String msgPrefix;
                    long worldTime2 = world.getWorldTime();
                    if (worldTime > worldTime2 || (worldTime2 - worldTime) < 15) {
                        // time is frozen
                        worldTime2 = world.getTotalWorldTime();
                        msgPrefix = "World time seems to be frozen at around " + worldTime + " ticks. ";
                        if (worldTime2 > 24 * 60 * 60 * 20) {
                            // total world time >24h
                            main.getChatHelper().sendMessage(EnumChatFormatting.GOLD, msgPrefix + "However, how long this world is loaded cannot be determined.");
                            return;
                        }
                        msgPrefix += "However, this world is probably";
                    } else {
                        msgPrefix = "This world is";
                    }
                    long days = worldTime2 / 24000L + 1;
                    long minutes = days * 20;
                    long hours = minutes / 60;
                    minutes -= hours * 60;

                    main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, msgPrefix + " loaded around " + EnumChatFormatting.GOLD + days + " ingame days "
                            + EnumChatFormatting.YELLOW + "(= less than" + EnumChatFormatting.GOLD + (hours > 0 ? " " + hours + " hours" : "") + (minutes > 0 ? " " + minutes + " mins" : "") + ")");
                }, 20);
            }
        }
        //endregion
        //region sub-commands: update mod
        else if (args[0].equalsIgnoreCase("update")) {
            handleUpdate(args);
        } else if (args[0].equalsIgnoreCase("updateHelp")) {
            handleUpdateHelp();
        } else if (args[0].equalsIgnoreCase("version")) {
            main.getVersionChecker().handleVersionStatus(true);
        } else if (args[0].equalsIgnoreCase("directory") || args[0].equalsIgnoreCase("folder")) {
            try {
                Desktop.getDesktop().open(main.getModsDirectory());
            } catch (IOException e) {
                e.printStackTrace();
                throw new MooCommandException("✖ An error occurred trying to open the mod's directory. I guess you have to open it manually ¯\\_(ツ)_/¯");
            }
        }
        //endregion
        // help
        else if (args[0].equalsIgnoreCase("help")) {
            sendCommandUsage(sender);
        }
        // fix: run server-side command /m with optional arguments
        else if (args[0].equalsIgnoreCase("cmd") || args[0].equalsIgnoreCase("command")) {
            String cmdArgs = CommandBase.buildString(args, 1);
            if (cmdArgs.length() > 0) {
                cmdArgs = " " + cmdArgs;
            }
            Minecraft.getMinecraft().thePlayer.sendChatMessage("/" + MooConfig.mooCmdAlias + cmdArgs);
        }
        // "catch-all" remaining sub-commands
        else {
            main.getChatHelper().sendMessage(EnumChatFormatting.RED, "Command " + EnumChatFormatting.DARK_RED + "/" + getCommandName() + " " + args[0] + EnumChatFormatting.RED + " doesn't exist. Use " + EnumChatFormatting.DARK_RED + "/" + getCommandName() + " help " + EnumChatFormatting.RED + "to show command usage."
                    + (StringUtils.isNotEmpty(MooConfig.mooCmdAlias) ? "\n" + EnumChatFormatting.RED + "Are you trying to use a server-side command " + EnumChatFormatting.DARK_RED + "/" + MooConfig.mooCmdAlias + EnumChatFormatting.RED + "? Use " + EnumChatFormatting.DARK_RED + "/" + MooConfig.mooCmdAlias + " cmd [arguments] " + EnumChatFormatting.RED + "instead." : ""));
        }
    }

    //region sub commands: Best friends, friends & other players
    private void handleStalking(String[] args) throws CommandException {
        if (!CredentialStorage.isMooValid) {
            throw new MooCommandException("You haven't set your Hypixel API key yet or the API key is invalid. Use " + EnumChatFormatting.DARK_RED + "/api new" + EnumChatFormatting.RED + " to request a new API key from Hypixel or use " + EnumChatFormatting.DARK_RED + "/" + this.getCommandName() + " apikey <key>" + EnumChatFormatting.RED + " to manually set your existing API key.");
        }
        if (args.length != 2) {
            throw new WrongUsageException("/" + getCommandName() + " stalk <playerName>");
        } else if (Utils.isInvalidMcName(args[1])) {
            throw new InvalidPlayerNameException(args[1]);
        } else {
            String playerName = args[1];
            main.getChatHelper().sendMessage(EnumChatFormatting.GRAY, "Stalking " + EnumChatFormatting.WHITE + playerName + EnumChatFormatting.GRAY + ". This may take a few seconds.");
            boolean isBestFriend = main.getFriendsHandler().isBestFriend(playerName, true);
            if (isBestFriend) {
                Friend stalkedPlayer = main.getFriendsHandler().getBestFriend(playerName);
                // we have the uuid already, so stalk the player
                stalkPlayer(stalkedPlayer);
            } else {
                // fetch player uuid
                ApiUtils.fetchFriendData(playerName, stalkedPlayer -> {
                    if (stalkedPlayer == null) {
                        throw new ApiContactException("Mojang", "couldn't stalk " + EnumChatFormatting.DARK_RED + playerName);
                    } else if (stalkedPlayer.equals(Friend.FRIEND_NOT_FOUND)) {
                        throw new PlayerNotFoundException("There is no player with the name " + EnumChatFormatting.DARK_RED + playerName + EnumChatFormatting.RED + ".");
                    } else {
                        // ... then stalk the player
                        stalkPlayer(stalkedPlayer);
                    }
                });
            }
        }
    }

    private void stalkPlayer(Friend stalkedPlayer) {
        ApiUtils.fetchPlayerStatus(stalkedPlayer, hyStalking -> {
            if (hyStalking != null && hyStalking.isSuccess()) {
                HyStalkingData.HySession session = hyStalking.getSession();
                if (session.isOnline()) {
                    main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, EnumChatFormatting.GOLD + stalkedPlayer.getName() + EnumChatFormatting.YELLOW + " is currently playing " + EnumChatFormatting.GOLD + session.getGameType() + EnumChatFormatting.YELLOW
                            + (session.getMode() != null ? ": " + EnumChatFormatting.GOLD + session.getMode() : "")
                            + (session.getMap() != null ? EnumChatFormatting.YELLOW + " (Map: " + EnumChatFormatting.GOLD + session.getMap() + EnumChatFormatting.YELLOW + ")" : ""));
                } else {
                    ApiUtils.fetchHyPlayerDetails(stalkedPlayer, hyPlayerData -> {
                        if (hyPlayerData == null) {
                            throw new ApiContactException("Hypixel", "couldn't stalk " + EnumChatFormatting.DARK_RED + stalkedPlayer.getName() + EnumChatFormatting.RED + " but they appear to be offline currently.");
                        } else if (hyPlayerData.hasNeverJoinedHypixel()) {
                            main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, EnumChatFormatting.GOLD + stalkedPlayer.getName() + EnumChatFormatting.YELLOW + " has " + EnumChatFormatting.GOLD + "never " + EnumChatFormatting.YELLOW + "been on Hypixel (or might be nicked).");
                        } else if (hyPlayerData.isHidingOnlineStatus()) {
                            main.getChatHelper().sendMessage(new ChatComponentText(hyPlayerData.getPlayerNameFormatted()).appendSibling(new ChatComponentText(" is hiding their online status from the Hypixel API. You can see their online status with ").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.YELLOW)))
                                    .appendSibling(new ChatComponentText("/profile " + hyPlayerData.getPlayerName()).setChatStyle(new ChatStyle()
                                            .setColor(EnumChatFormatting.GOLD)
                                            .setChatClickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/profile " + hyPlayerData.getPlayerName()))
                                            .setChatHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, new ChatComponentText(EnumChatFormatting.YELLOW + "Run " + EnumChatFormatting.GOLD + "/profile " + hyPlayerData.getPlayerName())))))
                                    .appendSibling(new ChatComponentText(" while you're in a lobby (tooltip of the player head on the top left).").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.YELLOW))));
                        } else if (hyPlayerData.hasNeverLoggedOut()) {
                            Pair<String, String> lastOnline = Utils.getDurationAsWords(hyPlayerData.getLastLogin());

                            main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, hyPlayerData.getPlayerNameFormatted() + EnumChatFormatting.YELLOW + " was last online " + EnumChatFormatting.GOLD + lastOnline.first() + EnumChatFormatting.YELLOW + " ago"
                                    + (lastOnline.second() != null ? " (" + EnumChatFormatting.GOLD + lastOnline.second() + EnumChatFormatting.YELLOW + ")" : "") + ".");
                        } else if (hyPlayerData.getLastLogin() > hyPlayerData.getLastLogout()) {
                            // player is logged in but is hiding their session details from API (My Profile > API settings > Online Status)
                            main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, EnumChatFormatting.GOLD + hyPlayerData.getPlayerNameFormatted() + EnumChatFormatting.YELLOW + " is currently playing " + EnumChatFormatting.GOLD + hyPlayerData.getLastGame() + "\n" + EnumChatFormatting.DARK_GRAY + "(" + hyPlayerData.getPlayerName() + " hides their session details from the API so that only their current game mode is visible)");
                        } else {
                            Pair<String, String> lastOnline = Utils.getDurationAsWords(hyPlayerData.getLastLogout());

                            main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, hyPlayerData.getPlayerNameFormatted() + EnumChatFormatting.YELLOW + " is " + EnumChatFormatting.GOLD + "offline" + EnumChatFormatting.YELLOW + " for " + EnumChatFormatting.GOLD + lastOnline.first() + EnumChatFormatting.YELLOW
                                    + ((lastOnline.second() != null || hyPlayerData.getLastGame() != null) ? (" ("
                                    + (lastOnline.second() != null ? EnumChatFormatting.GOLD + lastOnline.second() + EnumChatFormatting.YELLOW : "") // = last online date
                                    + (lastOnline.second() != null && hyPlayerData.getLastGame() != null ? "; " : "") // = delimiter
                                    + (hyPlayerData.getLastGame() != null ? "last played gamemode: " + EnumChatFormatting.GOLD + hyPlayerData.getLastGame() + EnumChatFormatting.YELLOW : "") // = last gamemode
                                    + ")") : "") + ".");
                        }
                    });
                }
            } else {
                String cause = (hyStalking != null) ? hyStalking.getCause() : null;
                throw new ApiContactException("Hypixel", "couldn't stalk " + EnumChatFormatting.DARK_RED + stalkedPlayer.getName() + EnumChatFormatting.RED + (cause != null ? " (Reason: " + EnumChatFormatting.DARK_RED + cause + EnumChatFormatting.RED + ")" : "") + ".");
            }
        });
    }

    private void handleBestFriendAdd(String[] args) throws CommandException {
        if (args.length != 2) {
            throw new WrongUsageException("/" + getCommandName() + " add <playerName>");
        } else if (Utils.isInvalidMcName(args[1])) {
            throw new InvalidPlayerNameException(args[1]);
        } else if (main.getFriendsHandler().isBestFriend(args[1], true)) {
            throw new MooCommandException(EnumChatFormatting.DARK_RED + args[1] + EnumChatFormatting.RED + " is a best friend already.");
        } else if (main.getFriendsHandler().getBestFriends().size() >= 100) {
            throw new MooCommandException(EnumChatFormatting.RED + "The best friends list is limited to 100 players. Remove some with " + EnumChatFormatting.WHITE + "/" + getCommandName() + " remove <name> " + EnumChatFormatting.RED + "first");
        } else {
            main.getChatHelper().sendMessage(EnumChatFormatting.GOLD, "Fetching " + EnumChatFormatting.YELLOW + args[1] + EnumChatFormatting.GOLD + "'s unique user id. This may take a few seconds...");
            // add friend async
            main.getFriendsHandler().addBestFriend(args[1]);
        }
    }

    private void handleBestFriendRemove(String[] args) throws CommandException {
        if (args.length != 2) {
            throw new WrongUsageException("/" + getCommandName() + " remove <playerName>");
        } else if (Utils.isInvalidMcName(args[1])) {
            throw new InvalidPlayerNameException(args[1]);
        }
        String username = args[1];
        boolean removed = main.getFriendsHandler().removeBestFriend(username);
        if (removed) {
            main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "Removed " + EnumChatFormatting.DARK_GREEN + username + EnumChatFormatting.GREEN + " from best friends list.");
        } else {
            throw new MooCommandException(EnumChatFormatting.DARK_RED + username + EnumChatFormatting.RED + " isn't a best friend.");
        }
    }

    private void handleListBestFriends() {
        Set<String> bestFriends = main.getFriendsHandler().getBestFriends();

        // TODO show fancy gui with list of best friends; maybe with buttons to delete them
        main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "➜ Best friends"
                + (bestFriends.isEmpty() ? "" : " (" + EnumChatFormatting.DARK_GREEN + bestFriends.size() + EnumChatFormatting.GREEN + ")") + ": "
                + ((bestFriends.isEmpty())
                ? EnumChatFormatting.ITALIC + "none :c"
                : EnumChatFormatting.DARK_GREEN + String.join(EnumChatFormatting.GREEN + ", " + EnumChatFormatting.DARK_GREEN, bestFriends)));
    }

    private void handleBestFriendsOnlineCheck() throws MooCommandException {
        if (!CredentialStorage.isMooValid) {
            throw new MooCommandException("You haven't set your Hypixel API key yet or the API key is invalid. Use " + EnumChatFormatting.DARK_RED + "/api new" + EnumChatFormatting.RED + " to request a new API key from Hypixel or use " + EnumChatFormatting.DARK_RED + "/" + this.getCommandName() + " apikey <key>" + EnumChatFormatting.RED + " to manually set your existing API key.");
        }
        if (main.getFriendsHandler().getBestFriends().size() > 0) {
            main.getChatHelper().sendMessage(EnumChatFormatting.GRAY, "Checking online status of " + EnumChatFormatting.WHITE + main.getFriendsHandler().getBestFriends().size() + EnumChatFormatting.GRAY + " best friends. This may take a few seconds.");
            main.getFriendsHandler().runBestFriendsOnlineCheck(true);
        } else {
            main.getChatHelper().sendMessage(EnumChatFormatting.RED, "You haven't added anyone to your best friends list yet. Do so with " + EnumChatFormatting.WHITE + "/moo add <playerName>");
        }
    }

    private void handleNameChangeCheck(String[] args) throws CommandException {
        if (args.length != 2) {
            throw new WrongUsageException("/" + getCommandName() + " nameChangeCheck <playerName>");
        } else if (Utils.isInvalidMcName(args[1])) {
            throw new InvalidPlayerNameException(args[1]);
        }
        Friend bestFriend = main.getFriendsHandler().getBestFriend(args[1]);
        if (bestFriend.equals(Friend.FRIEND_NOT_FOUND)) {
            throw new MooCommandException(EnumChatFormatting.DARK_RED + args[1] + EnumChatFormatting.RED + " isn't a best friend.");
        } else {
            main.getChatHelper().sendMessage(EnumChatFormatting.GOLD, "Checking if " + bestFriend.getName() + " changed their name... This will take a few seconds...");
            // check for name change async
            main.getFriendsHandler().doBestFriendNameChangeCheck(bestFriend, true);
        }
    }
    //endregion

    //region sub commands: SkyBlock
    private void handleStalkingSkyBlock(String[] args) throws CommandException {
        if (!CredentialStorage.isMooValid) {
            throw new MooCommandException("You haven't set your Hypixel API key yet or the API key is invalid. Use " + EnumChatFormatting.DARK_RED + "/api new" + EnumChatFormatting.RED + " to request a new API key from Hypixel or use " + EnumChatFormatting.DARK_RED + "/" + this.getCommandName() + " apikey <key>" + EnumChatFormatting.RED + " to manually set your existing API key.");
        }
        if (args.length != 2) {
            throw new WrongUsageException("/" + getCommandName() + " skyblockstalk <playerName>");
        } else if (Utils.isInvalidMcName(args[1])) {
            throw new InvalidPlayerNameException(args[1]);
        } else {
            String playerName = args[1];
            main.getChatHelper().sendMessage(EnumChatFormatting.GRAY, "Stalking " + EnumChatFormatting.WHITE + playerName + EnumChatFormatting.GRAY + "'s SkyBlock stats. This may take a few seconds.");
            boolean isBestFriend = main.getFriendsHandler().isBestFriend(playerName, true);
            if (isBestFriend) {
                Friend stalkedPlayer = main.getFriendsHandler().getBestFriend(playerName);
                // we have the uuid already, so stalk the player
                stalkSkyBlockStats(stalkedPlayer);
            } else {
                // fetch player uuid
                ApiUtils.fetchFriendData(playerName, stalkedPlayer -> {
                    if (stalkedPlayer == null) {
                        throw new ApiContactException("Mojang", "couldn't stalk " + EnumChatFormatting.DARK_RED + playerName);
                    } else if (stalkedPlayer.equals(Friend.FRIEND_NOT_FOUND)) {
                        throw new PlayerNotFoundException("There is no player with the name " + EnumChatFormatting.DARK_RED + playerName + EnumChatFormatting.RED + ".");
                    } else {
                        // ... then stalk the player
                        stalkSkyBlockStats(stalkedPlayer);
                    }
                });
            }
        }
    }

    private void stalkSkyBlockStats(Friend stalkedPlayer) {
        ApiUtils.fetchSkyBlockStats(stalkedPlayer, hySBStalking -> {
            if (hySBStalking != null && hySBStalking.isSuccess()) {
                HySkyBlockStats.Profile activeProfile = hySBStalking.getActiveProfile(stalkedPlayer.getUuid());

                if (activeProfile == null) {
                    throw new MooCommandException("Looks like " + EnumChatFormatting.DARK_RED + stalkedPlayer.getName() + EnumChatFormatting.RED + " hasn't played SkyBlock yet.");
                }

                String highestSkill = null;
                int highestLevel = -1;

                MooChatComponent skillLevels = new MooChatComponent("Skill levels:").gold();
                HySkyBlockStats.Profile.Member member = activeProfile.getMember(stalkedPlayer.getUuid());
                int skillLevelsSum = 0;
                for (Map.Entry<XpTables.Skill, Integer> entry : member.getSkills().entrySet()) {
                    String skill = Utils.fancyCase(entry.getKey().name());
                    int level = entry.getValue();
                    String skillLevel = MooConfig.useRomanNumerals() ? Utils.convertArabicToRoman(level) : String.valueOf(level);
                    skillLevels.appendFreshSibling(new MooChatComponent.KeyValueTooltipComponent(skill, skillLevel));

                    if (level > highestLevel) {
                        highestSkill = skill;
                        highestLevel = level;
                    }
                    if (!skill.equals("Carpentry") && !skill.equals("Runecrafting")) {
                        skillLevelsSum += level;
                    }
                }

                // output inspired by /profiles hover

                // coins:
                String coinsBankAndPurse = (activeProfile.getCoinBank() >= 0) ? Utils.formatNumberWithAbbreviations(activeProfile.getCoinBank() + member.getCoinPurse()) : Utils.formatNumberWithAbbreviations(member.getCoinPurse()) + " - purse only, bank API access disabled";
                Pair<String, String> fancyFirstJoined = member.getFancyFirstJoined();

                MooChatComponent wealthHover = new MooChatComponent("Accessible coins:").gold()
                        .appendFreshSibling(new MooChatComponent.KeyValueTooltipComponent("Purse", Utils.formatNumberWithAbbreviations(member.getCoinPurse())))
                        .appendFreshSibling(new MooChatComponent.KeyValueTooltipComponent("Bank", (activeProfile.getCoinBank() != -1) ? Utils.formatNumberWithAbbreviations(activeProfile.getCoinBank()) : "API access disabled"));
                if (activeProfile.coopCount() > 0) {
                    wealthHover.appendFreshSibling(new ChatComponentText(" "));
                    wealthHover.appendFreshSibling(new MooChatComponent.KeyValueTooltipComponent("Co-op members", String.valueOf(activeProfile.coopCount())));
                    wealthHover.appendFreshSibling(new MooChatComponent.KeyValueTooltipComponent("Co-ops' purses sum", Utils.formatNumberWithAbbreviations(activeProfile.getCoopCoinPurses(stalkedPlayer.getUuid()))));
                }

                String gameModeIcon = activeProfile.getGameModeIcon();
                MooChatComponent sbStats = new MooChatComponent("SkyBlock stats of " + stalkedPlayer.getName() + EnumChatFormatting.RESET + EnumChatFormatting.GRAY + " (" + (gameModeIcon.isEmpty() ? "" : EnumChatFormatting.getTextWithoutFormattingCodes(gameModeIcon) + ", ") + activeProfile.getCuteName() + ")").gold().bold().setUrl("https://sky.shiiyu.moe/stats/" + stalkedPlayer.getName() + "/" + activeProfile.getCuteName(), "Click to view SkyBlock stats on sky.shiiyu.moe")
                        .appendFreshSibling(new MooChatComponent.KeyValueChatComponent("Coins", coinsBankAndPurse).setHover(wealthHover));
                // highest skill + skill average:
                if (highestSkill != null) {
                    if (highestLevel == 0) {
                        sbStats.appendFreshSibling(new MooChatComponent.KeyValueChatComponent("Highest Skill", "All skills level 0"));
                    } else {
                        String highestSkillLevel = MooConfig.useRomanNumerals() ? Utils.convertArabicToRoman(highestLevel) : String.valueOf(highestLevel);
                        sbStats.appendFreshSibling(new MooChatComponent.KeyValueChatComponent("Highest Skill", highestSkill + " " + highestSkillLevel).setHover(skillLevels));
                    }
                    double skillAverage = XpTables.Skill.getSkillAverage(skillLevelsSum);
                    sbStats.appendFreshSibling(new MooChatComponent.KeyValueChatComponent("Skill average", String.format("%.1f", skillAverage))
                            .setHover(new MooChatComponent("Average skill level over all non-cosmetic skills\n(all except Carpentry and Runecrafting)").gray()));
                } else {
                    sbStats.appendFreshSibling(new MooChatComponent.KeyValueChatComponent("Highest Skill", "API access disabled"));
                }

                // slayer levels:
                StringBuilder slayerLevels = new StringBuilder();
                StringBuilder slayerLevelsTooltip = new StringBuilder();
                MooChatComponent slayerLevelsTooltipComponent = new MooChatComponent("Slayer bosses:").gold();
                for (Map.Entry<XpTables.Slayer, Integer> entry : member.getSlayerLevels().entrySet()) {
                    String slayerBoss = Utils.fancyCase(entry.getKey().name());
                    if (slayerLevels.length() > 0) {
                        slayerLevels.append(EnumChatFormatting.GRAY).append(" | ").append(EnumChatFormatting.YELLOW);
                        slayerLevelsTooltip.append(EnumChatFormatting.DARK_GRAY).append(" | ").append(EnumChatFormatting.WHITE);
                    }
                    slayerLevelsTooltip.append(slayerBoss);
                    int level = entry.getValue();

                    String slayerLevel = (level > 0) ? (MooConfig.useRomanNumerals() ? Utils.convertArabicToRoman(level) : String.valueOf(level)) : "0";
                    slayerLevels.append(slayerLevel);
                }
                MooChatComponent slayerLevelsComponent = new MooChatComponent.KeyValueChatComponent("Slayer levels", slayerLevels.toString());
                slayerLevelsComponent.setHover(slayerLevelsTooltipComponent.appendFreshSibling(new MooChatComponent(slayerLevelsTooltip.toString()).white()));
                sbStats.appendFreshSibling(slayerLevelsComponent);

                // dungeons:
                MooChatComponent dungeonsComponent = null;
                HySkyBlockStats.Profile.Dungeons dungeons = member.getDungeons();
                boolean hasPlayedDungeons = dungeons != null && dungeons.hasPlayed();
                if (hasPlayedDungeons) {
                    MooChatComponent dungeonHover = new MooChatComponent("Dungeoneering").gold().bold();

                    DataHelper.DungeonClass selectedClass = dungeons.getSelectedClass();
                    String selectedDungClass = "" + EnumChatFormatting.GRAY + EnumChatFormatting.ITALIC + "no class selected";
                    if (selectedClass != null) {
                        int selectedClassLevel = dungeons.getSelectedClassLevel();
                        selectedDungClass = selectedClass.getName() + " " + (MooConfig.useRomanNumerals() ? Utils.convertArabicToRoman(selectedClassLevel) : selectedClassLevel);
                    }
                    dungeonsComponent = new MooChatComponent.KeyValueChatComponent("Dungeoneering", selectedDungClass)
                            .setHover(dungeonHover);


                    // for each class (Archer, Berserk, ...)
                    Map<DataHelper.DungeonClass, Integer> classLevels = dungeons.getClassLevels();
                    if (classLevels != null && !classLevels.isEmpty()) {
                        dungeonHover.appendFreshSibling(new MooChatComponent("Classes:").gold());
                        for (Map.Entry<DataHelper.DungeonClass, Integer> classEntry : classLevels.entrySet()) {
                            String classLevel = (MooConfig.useRomanNumerals() ? Utils.convertArabicToRoman(classEntry.getValue()) : String.valueOf(classEntry.getValue()));
                            dungeonHover.appendFreshSibling(new MooChatComponent.KeyValueChatComponent((classEntry.getKey() == selectedClass ? "➜ " : "   ") + classEntry.getKey().getName(), classLevel));
                        }
                    }

                    // for each dungeon type (Catacombs, ...)
                    Map<String, HySkyBlockStats.Profile.Dungeons.Type> dungeonTypes = dungeons.getDungeonTypes();
                    if (dungeonTypes != null && !dungeonTypes.isEmpty()) {
                        // for each dungeon type: catacombs, ...
                        for (Map.Entry<String, HySkyBlockStats.Profile.Dungeons.Type> dungeonTypeEntry : dungeonTypes.entrySet()) {
                            // dungeon type entry for chat
                            HySkyBlockStats.Profile.Dungeons.Type dungeonType = dungeonTypeEntry.getValue();
                            if (!dungeonType.hasPlayed()) {
                                // never played this dungeon type
                                continue;
                            }
                            String dungeonTypeName = Utils.fancyCase(dungeonTypeEntry.getKey());
                            boolean isMasterFloor = dungeonTypeName.startsWith("Master ");
                            dungeonsComponent.appendFreshSibling(new MooChatComponent.KeyValueChatComponent("   " + dungeonTypeName, dungeonType.getSummary(isMasterFloor)))
                                    .setHover(dungeonHover);
                            // dungeon type entry for tooltip
                            if (isMasterFloor) {
                                dungeonHover.appendFreshSibling(new MooChatComponent(dungeonTypeName).gold());
                            } else {
                                // non-master dungeon
                                int dungeonTypeLevel = dungeonTypeEntry.getValue().getLevel();
                                dungeonHover.appendFreshSibling(new MooChatComponent.KeyValueChatComponent(dungeonTypeName, "Level " + (MooConfig.useRomanNumerals() ? Utils.convertArabicToRoman(dungeonTypeLevel) : dungeonTypeLevel)));
                            }

                            // for each floor
                            SortedMap<String, StringBuilder> floorStats = new TreeMap<>();
                            // ... add completed floors:
                            if (dungeonType.getTierCompletions() != null) {
                                for (Map.Entry<String, Integer> floorCompletions : dungeonType.getTierCompletions().entrySet()) {
                                    StringBuilder floorSummary = new StringBuilder();
                                    floorStats.put(floorCompletions.getKey(), floorSummary);
                                    // completed floor count:
                                    floorSummary.append(floorCompletions.getValue());
                                }
                            }
                            // ... add played floors
                            Map<String, Integer> dungeonTypeTimesPlayed = dungeonType.getTimesPlayed();
                            if (dungeonTypeTimesPlayed != null) {
                                for (Map.Entry<String, Integer> floorPlayed : dungeonTypeTimesPlayed.entrySet()) {
                                    StringBuilder floorSummary = floorStats.get(floorPlayed.getKey());
                                    if (floorSummary == null) {
                                        // hasn't beaten this floor, but already attempted it
                                        floorSummary = new StringBuilder("0");
                                        floorStats.put(floorPlayed.getKey(), floorSummary);
                                    }
                                    // played floor count:
                                    floorSummary.append(EnumChatFormatting.DARK_GRAY).append(" / ").append(EnumChatFormatting.YELLOW).append(floorPlayed.getValue());
                                }
                            } else {
                                // missing value for attempted floors, only show completed floors
                                for (StringBuilder floorSummary : floorStats.values()) {
                                    floorSummary.append(EnumChatFormatting.DARK_GRAY).append(" / ").append(EnumChatFormatting.YELLOW).append(EnumChatFormatting.OBFUSCATED).append("#");
                                }
                            }
                            // ... add best scores
                            if (dungeonType.getBestScore() != null) {
                                for (Map.Entry<String, Integer> bestScores : dungeonType.getBestScore().entrySet()) {
                                    StringBuilder floorSummary = floorStats.getOrDefault(bestScores.getKey(), new StringBuilder());
                                    // best floor score:
                                    floorSummary.append(EnumChatFormatting.DARK_GRAY).append(" (").append(EnumChatFormatting.WHITE).append(bestScores.getValue()).append(EnumChatFormatting.DARK_GRAY).append(")");
                                }
                            }

                            // add floor stats to dungeon type:
                            for (Map.Entry<String, StringBuilder> floorInfo : floorStats.entrySet()) {
                                dungeonHover.appendFreshSibling(new MooChatComponent.KeyValueChatComponent("   Floor " + floorInfo.getKey(), floorInfo.getValue().toString()));
                            }
                        }
                        dungeonHover.appendFreshSibling(new MooChatComponent(" Floor nr: completed / total floors (best score)").gray().italic());
                    }
                }
                if (!hasPlayedDungeons) {
                    dungeonsComponent = new MooChatComponent.KeyValueChatComponent("Dungeons", EnumChatFormatting.ITALIC + "never played");
                }
                sbStats.appendFreshSibling(dungeonsComponent);

                // pets:
                Pet activePet = null;
                Pet bestPet = null;
                StringBuilder pets = new StringBuilder();
                List<Pet> memberPets = member.getPets();
                int showPetsLimit = Math.min(16, memberPets.size());
                for (int i = 0; i < showPetsLimit; i++) {
                    Pet pet = memberPets.get(i);
                    if (pet.isActive()) {
                        activePet = pet;
                    } else {
                        if (activePet == null && bestPet == null && pets.length() == 0) {
                            // no active pet, display highest pet instead
                            bestPet = pet;
                            continue;
                        } else if (pets.length() > 0) {
                            pets.append("\n");
                        }
                        pets.append(pet.toFancyString());
                    }
                }
                int remainingPets = memberPets.size() - showPetsLimit;
                if (remainingPets > 0 && pets.length() > 0) {
                    pets.append("\n").append(EnumChatFormatting.GRAY).append(" + ").append(remainingPets).append(" other pets");
                }
                MooChatComponent petsComponent = null;
                if (activePet != null) {
                    petsComponent = new MooChatComponent.KeyValueChatComponent("Active Pet", activePet.toFancyString());
                } else if (bestPet != null) {
                    petsComponent = new MooChatComponent.KeyValueChatComponent("Best Pet", bestPet.toFancyString());
                }
                if (pets.length() > 0 && petsComponent != null) {
                    petsComponent.setHover(new MooChatComponent("Other pets:").gold().bold().appendFreshSibling(new MooChatComponent(pets.toString())));
                }
                if (petsComponent == null) {
                    petsComponent = new MooChatComponent.KeyValueChatComponent("Pet", "none");
                }
                sbStats.appendFreshSibling(petsComponent);

                // minions:
                Pair<Integer, Integer> uniqueMinionsData = activeProfile.getUniqueMinions();
                String uniqueMinions = String.valueOf(uniqueMinionsData.first());
                String uniqueMinionsHoverText = null;
                if (uniqueMinionsData.second() > activeProfile.coopCount()) {
                    // all players have their unique minions api access disabled
                    uniqueMinions = "API access disabled";
                } else if (uniqueMinionsData.second() > 0) {
                    // at least one player has their unique minions api access disabled
                    uniqueMinions += EnumChatFormatting.GRAY + " or more";
                    uniqueMinionsHoverText = "" + EnumChatFormatting.WHITE + uniqueMinionsData.second() + " out of " + (activeProfile.coopCount() + 1) + EnumChatFormatting.GRAY + " Co-op members have disabled API access, so some unique minions may be missing";
                }

                MooChatComponent.KeyValueChatComponent uniqueMinionsComponent = new MooChatComponent.KeyValueChatComponent("Unique Minions", uniqueMinions);
                if (uniqueMinionsHoverText != null) {
                    uniqueMinionsComponent.setHover(new MooChatComponent(uniqueMinionsHoverText).gray());
                }
                sbStats.appendFreshSibling(uniqueMinionsComponent);
                // fairy souls:
                sbStats.appendFreshSibling(new MooChatComponent.KeyValueChatComponent("Fairy Souls", (member.getFairySoulsCollected() >= 0) ? String.valueOf(member.getFairySoulsCollected()) : "API access disabled"));
                // profile age:
                sbStats.appendFreshSibling(new MooChatComponent.KeyValueChatComponent("Profile age", fancyFirstJoined.first()).setHover(new MooChatComponent.KeyValueTooltipComponent("Join date", (fancyFirstJoined.second() == null ? "today" : fancyFirstJoined.second()))));
                // last save:
                Pair<String, String> fancyLastSave = member.getFancyLastSave();
                sbStats.appendFreshSibling(new MooChatComponent.KeyValueChatComponent("Last save", fancyLastSave.first() + " ago").setHover(new MooChatComponent.KeyValueTooltipComponent("Last save", (fancyLastSave.second() == null ? "today" : fancyLastSave.second()))
                        .appendFreshSibling(new MooChatComponent("= last time " + stalkedPlayer.getName() + " has played SkyBlock.").white())));

                main.getChatHelper().sendMessage(sbStats);
            } else {
                String cause = (hySBStalking != null) ? hySBStalking.getCause() : null;
                String reason = "";
                if (cause != null) {
                    reason = " (Reason: " + EnumChatFormatting.DARK_RED + cause + EnumChatFormatting.RED + ")";
                }
                throw new ApiContactException("Hypixel", "couldn't stalk " + EnumChatFormatting.DARK_RED + stalkedPlayer.getName() + EnumChatFormatting.RED + reason + ".");
            }
        });
    }

    private void handleAnalyzeChests(String[] args) {
        if (args.length == 1) {
            boolean enabledChestTracker = main.enableChestTracker();
            if (enabledChestTracker) {
                // chest tracker wasn't enabled before, now it is
                String analyzeCommand = "/" + getCommandName() + " analyzeChests";
                if (MooConfig.chestAnalyzerShowCommandUsage) {
                    main.getChatHelper().sendMessage(new MooChatComponent("Enabled chest tracker! You can now...").green()
                            .appendFreshSibling(new MooChatComponent(EnumChatFormatting.GREEN + "  ❶ " + EnumChatFormatting.YELLOW + "add chests on your island by opening them; deselect chests by Sneaking + Right Click.").yellow())
                            .appendFreshSibling(new MooChatComponent(EnumChatFormatting.GREEN + "  ❷ " + EnumChatFormatting.YELLOW + "use " + EnumChatFormatting.GOLD + analyzeCommand + EnumChatFormatting.YELLOW + " again to run the chest analysis.").yellow().setSuggestCommand(analyzeCommand))
                            .appendFreshSibling(new MooChatComponent("     (You can search for an item inside your chests by double clicking its analysis row)").gray().setSuggestCommand(analyzeCommand))
                            .appendFreshSibling(new MooChatComponent(EnumChatFormatting.GREEN + "  ❸ " + EnumChatFormatting.YELLOW + "use " + EnumChatFormatting.GOLD + analyzeCommand + " stop" + EnumChatFormatting.YELLOW + " to stop the chest tracker and clear current results.").yellow().setSuggestCommand(analyzeCommand + " stop")));
                } else {
                    main.getChatHelper().sendMessage(new MooChatComponent("Enabled chest tracker! " + EnumChatFormatting.GRAY + "Run " + analyzeCommand + " again to run the chest analysis.").green().setSuggestCommand(analyzeCommand));
                }
            } else {
                // chest tracker was already enabled, open analysis GUI
                main.getChestTracker().analyzeResults();
                new TickDelay(() -> Minecraft.getMinecraft().displayGuiScreen(new ChestOverviewGui(main)), 1);
            }
        } else if (args.length == 2 && args[1].equalsIgnoreCase("stop")) {
            boolean disabledChestTracker = main.disableChestTracker();
            if (disabledChestTracker) {
                main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "Disabled chest tracker and cleared chest cache!");
            } else {
                main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, "Chest tracker wasn't even enabled...");
            }
        } else {
            String analyzeCommand = "/" + getCommandName() + " analyzeChests";
            main.getChatHelper().sendMessage(new MooChatComponent(Cowlection.MODNAME + " chest tracker & analyzer").gold().bold()
                    .appendFreshSibling(new MooChatComponent("Use " + EnumChatFormatting.GOLD + analyzeCommand + EnumChatFormatting.YELLOW + " to start tracking chests on your island! " + EnumChatFormatting.GREEN + "Then you can...").yellow().setSuggestCommand(analyzeCommand))
                    .appendFreshSibling(new MooChatComponent(EnumChatFormatting.GREEN + "  ❶ " + EnumChatFormatting.YELLOW + "add chests by opening them; deselect chests by Sneaking + Right Click.").yellow())
                    .appendFreshSibling(new MooChatComponent(EnumChatFormatting.GREEN + "  ❷ " + EnumChatFormatting.YELLOW + "use " + EnumChatFormatting.GOLD + analyzeCommand + EnumChatFormatting.YELLOW + " again to run the chest analysis.").yellow().setSuggestCommand(analyzeCommand))
                    .appendFreshSibling(new MooChatComponent(EnumChatFormatting.GREEN + "  ❸ " + EnumChatFormatting.YELLOW + "use " + EnumChatFormatting.GOLD + analyzeCommand + " stop" + EnumChatFormatting.YELLOW + " to stop the chest tracker and clear current results.").yellow().setSuggestCommand(analyzeCommand + " stop")));
        }
    }

    private void handleAnalyzeIsland(ICommandSender sender) {
        Map<String, String> minions = DataHelper.getMinions();

        Map<String, Integer> detectedMinions = new HashMap<>();
        Map<Integer, Integer> detectedMinionsWithSkin = new HashMap<>();
        int detectedMinionCount = 0;
        int minionsWithSkinCount = 0;
        entityLoop:
        for (Entity entity : sender.getEntityWorld().loadedEntityList) {
            if (entity instanceof EntityArmorStand) {
                EntityArmorStand minion = (EntityArmorStand) entity;

                if (minion.isInvisible() || !minion.isSmall() || minion.getHeldItem() == null) {
                    // not a minion: invisible, or not small armor stand, or no item in hand (= minion in a minion chair)
                    continue;
                }
                for (int slot = 0; slot < 4; slot++) {
                    if (minion.getCurrentArmor(slot) == null) {
                        // not a minion: missing equipment
                        continue entityLoop;
                    }
                }
                ItemStack skullItem = minion.getCurrentArmor(3); // head slot
                if (skullItem.getItem() instanceof ItemSkull && skullItem.getMetadata() == 3 && skullItem.hasTagCompound()) {
                    // is a player head!
                    if (skullItem.getTagCompound().hasKey("SkullOwner", Constants.NBT.TAG_COMPOUND)) {
                        NBTTagCompound skullOwner = skullItem.getTagCompound().getCompoundTag("SkullOwner");
                        String skullDataBase64 = skullOwner.getCompoundTag("Properties").getTagList("textures", Constants.NBT.TAG_COMPOUND).getCompoundTagAt(0).getString("Value");
                        String skullData = new String(Base64.decodeBase64(skullDataBase64));
                        String minionSkinId = StringUtils.substringBetween(skullData, "http://textures.minecraft.net/texture/", "\"");
                        String detectedMinion = minions.get(minionSkinId);
                        if (detectedMinion != null) {
                            // minion head matches one know minion tier
                            detectedMinions.put(detectedMinion, detectedMinions.getOrDefault(detectedMinion, 0) + 1);
                            detectedMinionCount++;
                        } else {
                            int minionTier = ImageUtils.getTierFromTexture(minionSkinId);
                            if (minionTier > 0) {
                                detectedMinionsWithSkin.put(minionTier, detectedMinionsWithSkin.getOrDefault(minionTier, 0) + 1);
                                minionsWithSkinCount++;
                            } else {
                                // looked like a minion but has no matching tier badge
                                main.getLogger().info("[/moo analyzeIsland] Found an armor stand that could be a minion but it is missing a tier badge: " + minionSkinId + "\t\t\t" + minion.serializeNBT());
                            }
                        }
                    }
                }
            }
        }
        StringBuilder analysisResults = new StringBuilder("Found ").append(EnumChatFormatting.GOLD).append(detectedMinionCount).append(EnumChatFormatting.YELLOW).append(" minions");
        if (minionsWithSkinCount > 0) {
            analysisResults.append(" + ").append(EnumChatFormatting.GOLD).append(minionsWithSkinCount).append(EnumChatFormatting.YELLOW).append(" unknown minions with skins");
        }
        analysisResults.append(" on this island");
        detectedMinions.entrySet().stream()
                .sorted(Map.Entry.comparingByKey()) // sort alphabetically by minion name and tier
                .forEach(minion -> {
                    String minionWithTier = minion.getKey();
                    int lastSpace = minionWithTier.lastIndexOf(' ');

                    String tierRoman = minionWithTier.substring(lastSpace + 1);

                    int tierArabic = Utils.convertRomanToArabic(tierRoman);
                    EnumChatFormatting tierColor = Utils.getMinionTierColor(tierArabic);

                    minionWithTier = minionWithTier.substring(0, lastSpace) + " " + tierColor + (MooConfig.useRomanNumerals() ? tierRoman : tierArabic);
                    analysisResults.append("\n  ").append(EnumChatFormatting.GOLD).append(minion.getValue()).append(minion.getValue() > 1 ? "✕ " : "⨉ ")
                            .append(EnumChatFormatting.YELLOW).append(minionWithTier);
                });
        detectedMinionsWithSkin.entrySet().stream()
                .sorted(Map.Entry.comparingByKey()) // sort by tier
                .forEach(minionWithSkin -> {
                    EnumChatFormatting tierColor = Utils.getMinionTierColor(minionWithSkin.getKey());
                    String minionTier = MooConfig.useRomanNumerals() ? Utils.convertArabicToRoman(minionWithSkin.getKey()) : String.valueOf(minionWithSkin.getKey());
                    analysisResults.append("\n  ").append(EnumChatFormatting.GOLD).append(minionWithSkin.getValue()).append(minionWithSkin.getValue() > 1 ? "✕ " : "⨉ ")
                            .append(EnumChatFormatting.RED).append("Unknown minion ").append(EnumChatFormatting.YELLOW).append("(new or with minion skin) ").append(tierColor).append(minionTier);
                });
        main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, analysisResults.toString());
    }

    private void handleWhatAmILookingAt(ICommandSender sender, boolean showAllInfo) {
        MovingObjectPosition lookingAt = Minecraft.getMinecraft().objectMouseOver;
        if (lookingAt != null) {
            switch (lookingAt.typeOfHit) {
                case BLOCK: {
                    TileEntity te = sender.getEntityWorld().getTileEntity(lookingAt.getBlockPos());
                    if (te instanceof TileEntitySkull) {
                        TileEntitySkull skull = (TileEntitySkull) te;
                        if (skull.getSkullType() != 3) {
                            // non-player skull, abort!
                            break;
                        }
                        NBTTagCompound nbt = new NBTTagCompound();
                        skull.writeToNBT(nbt);
                        // is a player head!
                        if (nbt.hasKey("Owner", Constants.NBT.TAG_COMPOUND)) {
                            NBTTagCompound relevantNbt = tldrInfo(nbt, showAllInfo);
                            BlockPos skullPos = skull.getPos();
                            relevantNbt.setTag("__position", new NBTTagIntArray(new int[]{skullPos.getX(), skullPos.getY(), skullPos.getZ()}));
                            Utils.copyToClipboardOrSaveAsFile("skull data", "skull", relevantNbt, true);
                            return;
                        }
                    } else if (te instanceof TileEntitySign) {
                        TileEntitySign sign = (TileEntitySign) te;
                        NBTTagCompound nbt = new NBTTagCompound();
                        for (int lineNr = 0; lineNr < sign.signText.length; lineNr++) {
                            nbt.setString("Text" + (lineNr + 1), sign.signText[lineNr].getFormattedText());
                            nbt.setString("TextUnformatted" + (lineNr + 1), sign.signText[lineNr].getUnformattedText());
                        }
                        Utils.copyToClipboardOrSaveAsFile("sign data", "sign", nbt, true);
                        return;
                    } else if (te instanceof TileEntityBanner) {
                        List<String> possiblePatterns = Arrays.asList("b", "bl", "bo", "br", "bri", "bs", "bt", "bts", "cbo", "cr", "cre", "cs", "dls", "drs", "flo", "gra", "hh", "ld", "ls", "mc", "moj", "mr", "ms", "rd", "rs", "sc", "sku", "ss", "tl", "tr", "ts", "tt", "tts", "vh", "lud", "rud", "gru", "hhb", "vhr");
                        String base64Alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789+/";

                        TileEntityBanner banner = (TileEntityBanner) te;
                        Iterator<TileEntityBanner.EnumBannerPattern> bannerPatterns = banner.getPatternList().iterator();
                        Iterator<EnumDyeColor> bannerColors = banner.getColorList().iterator();
                        try {
                            // hash used by needcoolshoes.com
                            StringBuilder bannerHash = new StringBuilder();
                            while (bannerPatterns.hasNext() && bannerColors.hasNext()) {
                                int patternId = possiblePatterns.indexOf(bannerPatterns.next().getPatternID());
                                int color = bannerColors.next().getDyeDamage();
                                int first = ((patternId >> 6) << 4) | (color & 0xF);
                                int second = patternId & 0x3F;
                                bannerHash.append(base64Alphabet.charAt(first)).append(base64Alphabet.charAt(second));
                            }
                            main.getChatHelper().sendMessage(new MooChatComponent("➡ View banner on needcoolshoes.com").green().setUrl("https://www.needcoolshoes.com/banner?=" + bannerHash));
                        } catch (IndexOutOfBoundsException e) {
                            main.getChatHelper().sendMessage(EnumChatFormatting.RED, "Failed to parse banner data (unknown banner pattern).");
                        }
                        return;
                    }
                    break;
                }
                case ENTITY: {
                    Entity entity = lookingAt.entityHit;
                    if (entity instanceof EntityArmorStand) {
                        // looking at non-invisible armor stand (e.g. Minion)
                        EntityArmorStand armorStand = (EntityArmorStand) entity;
                        copyEntityInfoToClipboard("armor stand '" + armorStand.getName() + EnumChatFormatting.GREEN + "'", "armorstand", armorStand, showAllInfo);
                        return;
                    } else if (entity instanceof EntityOtherPlayerMP) {
                        // looking at NPC or another player
                        EntityOtherPlayerMP otherPlayer = (EntityOtherPlayerMP) entity;
                        copyEntityInfoToClipboard("player/npc '" + otherPlayer.getDisplayNameString() + EnumChatFormatting.GREEN + "'", "npc_" + otherPlayer.getDisplayNameString(), otherPlayer, showAllInfo);
                        return;
                    } else if (entity instanceof EntityItemFrame) {
                        EntityItemFrame itemFrame = (EntityItemFrame) entity;

                        ItemStack displayedItem = itemFrame.getDisplayedItem();
                        if (displayedItem != null) {
                            NBTTagCompound nbt = new NBTTagCompound();
                            if (displayedItem.getItem() == Items.filled_map) {
                                // filled map
                                MapData mapData = ItemMap.loadMapData(displayedItem.getItemDamage(), sender.getEntityWorld());
                                File mapFile = ImageUtils.saveMapToFile(mapData);
                                if (mapFile != null) {
                                    main.getChatHelper().sendMessage(new MooChatComponent("Saved map as " + mapFile.getName() + " ").green().setOpenFile(mapFile).appendSibling(new MooChatComponent("[open file]").gold())
                                            .appendSibling(new MooChatComponent(" [open folder]").darkAqua().setOpenFile(mapFile.getParentFile())));
                                } else {
                                    main.getChatHelper().sendMessage(EnumChatFormatting.RED, "Couldn't save map for some reason");
                                }
                                return;
                            } else {
                                displayedItem.writeToNBT(nbt);
                            }
                            Utils.copyToClipboardOrSaveAsFile("item in item frame '" + displayedItem.getDisplayName() + EnumChatFormatting.GREEN + "'", "itemframe-item_" + displayedItem.getDisplayName(), nbt, true);
                            return;
                        }
                    } else if (entity instanceof EntityLiving) {
                        EntityLiving living = (EntityLiving) entity;
                        copyEntityInfoToClipboard("mob '" + living.getName() + EnumChatFormatting.GREEN + "'", "mob_" + living.getName(), living, showAllInfo);
                        return;
                    }
                    break;
                }
                default:
                    // didn't find anything...
            }
        }
        // didn't find anything special; search for all nearby entities
        double maxDistance = 5; // default 4
        Entity self = sender.getCommandSenderEntity();
        Vec3 selfLook = self.getLook(1);
        float searchRadius = 1.0F;
        List<Entity> nearbyEntities = sender.getEntityWorld().getEntitiesInAABBexcluding(self, self.getEntityBoundingBox().addCoord(selfLook.xCoord * maxDistance, selfLook.yCoord * maxDistance, selfLook.zCoord * maxDistance).expand(searchRadius, searchRadius, searchRadius), entity1 -> true);

        if (nearbyEntities.size() > 0) {
            NBTTagList entities = new NBTTagList();
            for (Entity entity : nearbyEntities) {
                NBTTagCompound relevantNbt = extractEntityInfo(entity, showAllInfo);
                // add additional info to make it easier to find the correct entity in the list of entities
                relevantNbt.setTag("_entityType", new NBTTagString(entity.getClass().getSimpleName()));
                NBTTagList position = new NBTTagList();
                position.appendTag(new NBTTagDouble(entity.posX));
                position.appendTag(new NBTTagDouble(entity.posY));
                position.appendTag(new NBTTagDouble(entity.posZ));
                relevantNbt.setTag("_position", position);
                entities.appendTag(relevantNbt);
            }

            Utils.copyToClipboardOrSaveAsFile(nearbyEntities.size() + " nearby entities", "entities", entities, true);
        } else {
            main.getChatHelper().sendMessage(EnumChatFormatting.RED, "You stare into the void... and see nothing of interest. " + EnumChatFormatting.GRAY + "Try looking at: NPCs, mobs, armor stands, placed skulls, banners, signs, dropped items, item in item frames, or maps on a wall.");
        }
    }

    private NBTTagCompound extractEntityInfo(Entity entity, boolean showAllInfo) {
        NBTTagCompound nbt = new NBTTagCompound();
        entity.writeToNBT(nbt);
        NBTTagCompound relevantNbt = tldrInfo(nbt, showAllInfo);

        if (entity instanceof EntityOtherPlayerMP) {
            EntityOtherPlayerMP otherPlayer = (EntityOtherPlayerMP) entity;
            relevantNbt.setString("__name", otherPlayer.getName());
            if (otherPlayer.hasCustomName()) {
                relevantNbt.setString("__customName", otherPlayer.getCustomNameTag());
            }
            GameProfile gameProfile = otherPlayer.getGameProfile();
            for (Property property : gameProfile.getProperties().get("textures")) {
                relevantNbt.setString("_skin", property.getValue());
            }
        }
        if (entity instanceof EntityLiving || entity instanceof EntityOtherPlayerMP) {
            // either EntityLiving (any mob), or EntityOtherPlayerMP => find other nearby "name tag" EntityArmorStands
            List<Entity> nearbyArmorStands = entity.getEntityWorld().getEntitiesInAABBexcluding(entity, entity.getEntityBoundingBox().expand(0.2d, 3, 0.2d), nearbyEntity -> {
                if (nearbyEntity instanceof EntityArmorStand) {
                    EntityArmorStand armorStand = (EntityArmorStand) nearbyEntity;
                    if (armorStand.isInvisible() && armorStand.hasCustomName()) {
                        for (ItemStack equipment : armorStand.getInventory()) {
                            if (equipment != null) {
                                // armor stand has equipment, abort!
                                return false;
                            }
                        }
                        // armor stand has a custom name, is invisible and has no equipment -> probably a "name tag"-armor stand
                        return true;
                    }
                }
                return false;
            });
            if (nearbyArmorStands.size() > 0) {
                nearbyArmorStands.sort(Comparator.<Entity>comparingDouble(nearbyArmorStand -> nearbyArmorStand.posY).reversed());
                NBTTagList nearbyText = new NBTTagList();
                for (int i = 0, maxNearbyArmorStands = Math.min(10, nearbyArmorStands.size()); i < maxNearbyArmorStands; i++) {
                    Entity nearbyArmorStand = nearbyArmorStands.get(i);
                    nearbyText.appendTag(new NBTTagString(nearbyArmorStand.getCustomNameTag()));
                }
                relevantNbt.setTag("__nearbyText", nearbyText);
            }
        }
        return relevantNbt;
    }

    private void copyEntityInfoToClipboard(String what, String fileName, Entity entity, boolean showAllInfo) {
        NBTTagCompound relevantNbt = extractEntityInfo(entity, showAllInfo);
        Utils.copyToClipboardOrSaveAsFile(what, fileName, relevantNbt, true);
    }

    private NBTTagCompound tldrInfo(NBTTagCompound nbt, boolean showAllInfo) {
        if (showAllInfo) {
            // don't tl;dr!
            return nbt;
        }
        String[] importantTags = new String[]{"CustomName", "id", "Damage", "Count", "Equipment", "Item", "tag", "ExtraAttributes", "Owner"};
        NBTTagCompound relevantNbt = new NBTTagCompound();
        for (String tag : importantTags) {
            if (nbt.hasKey(tag)) {
                relevantNbt.setTag(tag, nbt.getTag(tag));
            }
        }
        return relevantNbt;
    }

    private void handleDungeon(String[] args) throws MooCommandException {
        DungeonCache dungeonCache = main.getDungeonCache();
        if (args.length == 2 && args[1].equalsIgnoreCase("enter")) {
            // enter dungeon in case for some reason it wasn't detected automatically
            dungeonCache.onDungeonEnterOrLeave(true);
        } else if (args.length == 2 && args[1].equalsIgnoreCase("leave")) {
            // leave dungeon in case for some reason it wasn't detected automatically
            dungeonCache.onDungeonEnterOrLeave(false);
        } else if ((args.length == 2 && (args[1].equalsIgnoreCase("party") || args[1].equalsIgnoreCase("p")))
                || args.length == 1 && args[0].equalsIgnoreCase("dp")) {
            if (!CredentialStorage.isMooValid) {
                throw new MooCommandException("You haven't set your Hypixel API key yet or the API key is invalid. Use " + EnumChatFormatting.DARK_RED + "/api new" + EnumChatFormatting.RED + " to request a new API key from Hypixel or use " + EnumChatFormatting.DARK_RED + "/" + this.getCommandName() + " apikey <key>" + EnumChatFormatting.RED + " to manually set your existing API key.");
            } else if (dungeonsPartyListener != null) {
                throw new MooCommandException("Please wait a few seconds before using this command again.");
            }
            main.getChatHelper().sendServerCommand("/party list");
            new TickDelay(() -> {
                // abort after 10 seconds
                if (dungeonsPartyListener.isStillRunning()) {
                    dungeonsPartyListener.shutdown();
                    main.getChatHelper().sendMessage(EnumChatFormatting.RED, "Dungeon party analysis timed out. Probably the recognition of the party members failed.");
                }
                dungeonsPartyListener = null;
            }, 10 * 20);
            // register dungeon listener
            dungeonsPartyListener = new DungeonsPartyListener(main);
        } else if (args.length == 2 && args[1].equalsIgnoreCase("rules")
                || args.length == 1 && args[0].equalsIgnoreCase("dr")) {
            displayGuiScreen(new RuleEditorGui());
        } else if (dungeonCache.isInDungeon()) {
            dungeonCache.sendDungeonPerformance();
        } else {
            throw new MooCommandException(EnumChatFormatting.DARK_RED + "Looks like you're not in a dungeon... However, you can manually enable the Dungeon Performance overlay with " + EnumChatFormatting.RED + "/" + getCommandName() + " dungeon enter" + EnumChatFormatting.DARK_RED + ". You can also force-leave a dungeon with " + EnumChatFormatting.RED + "/" + getCommandName() + " dungeon leave.\n" + EnumChatFormatting.GRAY + "Want to inspect your current party members? Use " + EnumChatFormatting.WHITE + "/" + getCommandName() + " dungeon party");
        }
    }
    //endregion

    //region sub-commands: miscellaneous
    private void handleGuiScale(String[] args) throws CommandException {
        GameSettings gameSettings = Minecraft.getMinecraft().gameSettings;
        int currentGuiScale = gameSettings.guiScale;
        if (args.length == 1) {
            main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "➜ Current GUI scale: " + EnumChatFormatting.DARK_GREEN + currentGuiScale);
        } else {
            int scale = MathHelper.parseIntWithDefault(args[1], -1);
            if (scale == -1 || scale > 10) {
                throw new NumberInvalidException(EnumChatFormatting.DARK_RED + args[1] + EnumChatFormatting.RED + " is an invalid GUI scale value. Valid values are integers below 10");
            }
            gameSettings.guiScale = scale;
            gameSettings.saveOptions();
            main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "✔ New GUI scale: " + EnumChatFormatting.DARK_GREEN + scale + EnumChatFormatting.GREEN + " (previous: " + EnumChatFormatting.DARK_GREEN + currentGuiScale + EnumChatFormatting.GREEN + ")");
        }
    }

    private void handleApiKey(String[] args) throws CommandException {
        if (args.length == 1) {
            String firstSentence;
            EnumChatFormatting color;
            EnumChatFormatting colorSecondary;
            if (CredentialStorage.isMooValid) {
                firstSentence = "You already set your Hypixel API key.";
                color = EnumChatFormatting.GREEN;
                colorSecondary = EnumChatFormatting.DARK_GREEN;
            } else {
                firstSentence = "You haven't set your Hypixel API key yet or the API key is invalid.";
                color = EnumChatFormatting.RED;
                colorSecondary = EnumChatFormatting.DARK_RED;
            }
            main.getChatHelper().sendMessage(color, firstSentence + " Use " + colorSecondary + "/api new" + color + " to request a new API key from Hypixel or use " + colorSecondary + "/" + this.getCommandName() + " apikey <key>" + color + " to manually set your existing API key.");
        } else {
            String key = args[1];
            if (Utils.isValidUuid(key)) {
                main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, "Validating API key...");
                main.getMoo().setMooIfValid(key, true);
            } else {
                throw new SyntaxErrorException("That doesn't look like a valid API key...");
            }
        }
    }
    //endregion

    //region sub-commands: update mod
    private void handleUpdate(String[] args) throws MooCommandException {
        if (args.length == 2 && args[1].equalsIgnoreCase("help")) {
            handleUpdateHelp();
            return;
        }
        boolean updateCheckStarted = main.getVersionChecker().runUpdateCheck(true);

        if (updateCheckStarted) {
            main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "➜ Checking for a newer mod version...");
            // VersionChecker#handleVersionStatus will run with a 5 seconds delay
        } else {
            long nextUpdate = main.getVersionChecker().getNextCheck();
            String waitingTime = String.format("%02d:%02d",
                    TimeUnit.MILLISECONDS.toMinutes(nextUpdate),
                    TimeUnit.MILLISECONDS.toSeconds(nextUpdate) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(nextUpdate)));
            throw new MooCommandException("⚠ Update checker is on cooldown. Please wait " + EnumChatFormatting.GOLD + EnumChatFormatting.BOLD + waitingTime + EnumChatFormatting.RESET + EnumChatFormatting.RED + " more minutes before checking again.");
        }
    }

    private void handleUpdateHelp() {
        main.getChatHelper().sendMessage(new ChatComponentText("➜ Update instructions:").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.GOLD).setBold(true))
                .appendSibling(new ChatComponentText("\n➊" + EnumChatFormatting.YELLOW + " download latest mod version").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.GOLD).setBold(false)
                        .setChatClickEvent(new ClickEvent(ClickEvent.Action.OPEN_URL, main.getVersionChecker().getDownloadUrl()))
                        .setChatHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, new ChatComponentText(EnumChatFormatting.YELLOW + "Download the latest version of " + Cowlection.MODNAME + "\n➜ Click to download latest mod file")))))
                .appendSibling(new ChatComponentText("\n➋" + EnumChatFormatting.YELLOW + " exit Minecraft").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.GOLD).setBold(false)
                        .setChatHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, new ChatComponentText(EnumChatFormatting.GOLD + "➋" + EnumChatFormatting.YELLOW + " Without closing Minecraft first,\n" + EnumChatFormatting.YELLOW + "you can't delete the old .jar file!")))))
                .appendSibling(new ChatComponentText("\n➌" + EnumChatFormatting.YELLOW + " copy " + EnumChatFormatting.GOLD + Cowlection.MODNAME.replace(" ", "") + "-" + main.getVersionChecker().getNewVersion() + ".jar" + EnumChatFormatting.YELLOW + " into mods directory").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.GOLD).setBold(false)
                        .setChatClickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/moo directory"))
                        .setChatHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, new ChatComponentText(EnumChatFormatting.YELLOW + "Open mods directory with command " + EnumChatFormatting.GOLD + "/moo directory\n➜ Click to open mods directory")))))
                .appendSibling(new ChatComponentText("\n➍" + EnumChatFormatting.YELLOW + " delete old mod file " + EnumChatFormatting.GOLD + Cowlection.MODNAME.replace(" ", "") + "-" + Cowlection.VERSION + ".jar ").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.GOLD).setBold(false)))
                .appendSibling(new ChatComponentText("\n➎" + EnumChatFormatting.YELLOW + " start Minecraft again").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.GOLD).setBold(false))));
    }
    //endregion

    // other helper methods:
    private void displayGuiScreen(GuiScreen gui) {
        // delay by 1 tick, because the chat closing would close the new gui instantly as well.
        new TickDelay(() -> Minecraft.getMinecraft().displayGuiScreen(gui), 1);
    }

    private void sendCommandUsage(ICommandSender sender) {
        IChatComponent usage = new MooChatComponent("➜ " + Cowlection.MODNAME + " commands:").gold().bold()
                .appendSibling(createCmdHelpEntry("config", "Open mod's configuration"))
                .appendSibling(new MooChatComponent("\n").reset().white().appendText(EnumChatFormatting.DARK_GREEN + "  ❢" + EnumChatFormatting.LIGHT_PURPLE + EnumChatFormatting.ITALIC + " To move the Dungeons overlay: " + EnumChatFormatting.WHITE + "/" + getCommandName() + " config " + EnumChatFormatting.GRAY + "➡ " + EnumChatFormatting.WHITE + "SB Dungeons " + EnumChatFormatting.GRAY + "➡ " + EnumChatFormatting.WHITE + "Dungeon Performance Overlay"))
                .appendSibling(new MooChatComponent("\n").reset().gray().appendText(EnumChatFormatting.DARK_GREEN + "  ❢" + EnumChatFormatting.GRAY + EnumChatFormatting.ITALIC + " Commands marked with §d§l⚷" + EnumChatFormatting.GRAY + EnumChatFormatting.ITALIC + " require a valid API key"))
                .appendSibling(createCmdHelpSection(1, "Best friends, friends & other players"))
                .appendSibling(createCmdHelpEntry("stalk", "Get info of player's status §d§l⚷"))
                .appendSibling(createCmdHelpEntry("add", "Add best friends"))
                .appendSibling(createCmdHelpEntry("remove", "Remove best friends"))
                .appendSibling(createCmdHelpEntry("list", "View list of best friends"))
                .appendSibling(createCmdHelpEntry("online", "View list of best friends that are currently online §d§l⚷"))
                .appendSibling(createCmdHelpEntry("nameChangeCheck", "Force a scan for a changed name of a best friend (is done automatically as well)"))
                .appendSibling(createCmdHelpSection(2, "SkyBlock"))
                .appendSibling(createCmdHelpEntry("stalkskyblock", "Get info of player's SkyBlock stats §d§l⚷"))
                .appendSibling(createCmdHelpEntry("analyzeChests", "Analyze chests' contents and evaluate potential Bazaar value"))
                .appendSibling(createCmdHelpEntry("analyzeIsland", "Analyze a SkyBlock private island (inspect minions)"))
                .appendSibling(createCmdHelpEntry("waila", "Copy the 'thing' you're looking at (optional keybinding: Minecraft controls > Cowlection)"))
                .appendSibling(createCmdHelpEntry("dungeon", "SkyBlock Dungeons: display current dungeon performance"))
                .appendSibling(createCmdHelpEntry("dungeon party", "SkyBlock Dungeons: Shows armor and dungeon info about current party members " + EnumChatFormatting.GRAY + "(alias: " + EnumChatFormatting.WHITE + "/" + getCommandName() + " dp" + EnumChatFormatting.GRAY + ") §d§l⚷"))
                .appendSibling(createCmdHelpEntry("dungeon rules", "SkyBlock Dungeons: Edit rules for Party Finder " + EnumChatFormatting.GRAY + "(alias: " + EnumChatFormatting.WHITE + "/" + getCommandName() + " dr" + EnumChatFormatting.GRAY + ")"))
                .appendSibling(createCmdHelpSection(3, "Miscellaneous"))
                .appendSibling(createCmdHelpEntry("search", "Open Minecraft log search"))
                .appendSibling(createCmdHelpEntry("worldage", "Check how long the current world is loaded"))
                .appendSibling(createCmdHelpEntry("guiScale", "Change GUI scale"))
                .appendSibling(createCmdHelpEntry("rr", "Alias for /r without auto-replacement to /msg"))
                .appendSibling(createCmdHelpEntry("shrug", "¯\\_(ツ)_/¯"))
                .appendSibling(createCmdHelpSection(4, "Update mod"))
                .appendSibling(createCmdHelpEntry("update", "Check for new mod updates"))
                .appendSibling(createCmdHelpEntry("updateHelp", "Show mod update instructions"))
                .appendSibling(createCmdHelpEntry("version", "View results of last mod update check"))
                .appendSibling(createCmdHelpEntry("directory", "Open Minecraft's mods directory"))
                .appendFreshSibling(new MooChatComponent("➡ /commandslist " + EnumChatFormatting.YELLOW + "to list all commands added by your installed mods.").lightPurple().setSuggestCommand("/commandslist"));
        sender.addChatMessage(usage);
    }

    private IChatComponent createCmdHelpSection(int nr, String title) {
        String prefix = Character.toString((char) (0x2789 + nr));
        return new ChatComponentText("\n").appendSibling(new ChatComponentText(prefix + " " + title).setChatStyle(new ChatStyle().setColor(EnumChatFormatting.GOLD).setBold(true)));
    }

    private IChatComponent createCmdHelpEntry(String cmd, String usage) {
        String command = "/" + this.getCommandName() + " " + cmd;

        return new MooChatComponent("\n").reset().appendSibling(new MooChatComponent.KeyValueChatComponent(command, usage, " ➡ ").setSuggestCommand(command));
    }

    @Override
    public int getRequiredPermissionLevel() {
        return 0;
    }

    @Override
    public List<String> addTabCompletionOptions(ICommandSender sender, String[] args, BlockPos pos) {
        if (args.length == 1) {
            return getListOfStringsMatchingLastWord(args,
                    /* main */ "help", "config",
                    /* Best friends, friends & other players */ "stalk", "add", "remove", "list", "online", "nameChangeCheck",
                    /* SkyBlock */ "stalkskyblock", "skyblockstalk", "chestAnalyzer", "analyzeChests", "analyzeIsland", "waila", "whatAmILookingAt", "dungeon",
                    /* miscellaneous */ "search", "worldage", "serverage", "guiscale", "rr", "shrug", "apikey",
                    /* update mod */ "update", "updateHelp", "version", "directory",
                    /* rarely used aliases */ "askPolitelyWhereTheyAre", "askPolitelyAboutTheirSkyBlockProgress", "year", "whatyearisit");
        } else if (args.length == 2 && (args[0].equalsIgnoreCase("waila") || args[0].equalsIgnoreCase("whatAmILookingAt"))) {
            return getListOfStringsMatchingLastWord(args, "all", "main");
        } else if (args.length == 2 && args[0].equalsIgnoreCase("remove")) {
            return getListOfStringsMatchingLastWord(args, main.getFriendsHandler().getBestFriends());
        } else if (args.length == 2 && args[0].equalsIgnoreCase("dungeon")) {
            return getListOfStringsMatchingLastWord(args, "party", "rules", "enter", "leave");
        } else if (args.length == 2 && (args[0].equalsIgnoreCase("worldage") || args[0].equalsIgnoreCase("serverage"))) {
            return getListOfStringsMatchingLastWord(args, "off", "on", "disable", "enable");
        } else if (args.length == 2 && (args[0].equalsIgnoreCase("chestAnalyzer") || args[0].equalsIgnoreCase("chestAnalyser") || args[0].equalsIgnoreCase("analyzeChests") || args[0].equalsIgnoreCase("analyseChests"))) {
            return getListOfStringsMatchingLastWord(args, "stop");
        }
        String commandArg = args[0].toLowerCase();
        if (args.length == 2 && (commandArg.equals("s") || commandArg.equals("ss") || commandArg.equals("namechangecheck") || commandArg.contains("stalk") || commandArg.contains("askpolitely"))) { // stalk & stalkskyblock + namechangecheck
            return getListOfStringsMatchingLastWord(args, main.getPlayerCache().getAllNamesSorted());
        }
        return null;
    }
}