Tplus/src/main/java/net/nuggetmc/ai/utils/PlayerUtils.java

package net.nuggetmc.ai.utils;

import net.nuggetmc.ai.TerminatorPlus;
import org.bukkit.GameMode;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

import java.io.FileReader;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

public class PlayerUtils {

    public static boolean isInvincible(GameMode mode) {
        return mode != GameMode.SURVIVAL && mode != GameMode.ADVENTURE && mode != null;
    }

    private static final Set<String> USERNAME_CACHE = new HashSet<>();

    public static String randomName() {
        if (USERNAME_CACHE.isEmpty()) {
            fillUsernameCache();
        }

        return MathUtils.getRandomSetElement(USERNAME_CACHE);
    }

    public static void fillUsernameCache() {
        String file = TerminatorPlus.getInstance().getServer().getWorldContainer().getAbsolutePath();
        file = file.substring(0, file.length() - 1) + "usercache.json";

        JSONParser parser = new JSONParser();

        try {
            JSONArray array = (JSONArray) parser.parse(new FileReader(file));

            for (Object obj : array) {
                JSONObject jsonOBJ = (JSONObject) obj;
                String username = (String) jsonOBJ.get("name");

                USERNAME_CACHE.add(username);
            }
        }

        catch (IOException | ParseException e) {
            Debugger.log("Failed to fetch from the usercache.");
        }
    }
}