KillManager.java

package me.liondadev;

import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.PlayerDeathEvent;
import org.bukkit.scheduler.BukkitRunnable;

import java.util.HashMap;
import java.util.UUID;

public class KillManager implements Listener {
    public HashMap<UUID, Integer> killsMap = new HashMap<>();
    // Allows config to be used outside of the main class.
    Cleaderboard plugin = Cleaderboard.getPlugin(Cleaderboard.class);

    public KillManager() {
        // Put all of the config values into the hashmap
        for (String key : plugin.stats.getConfig().getKeys(false)) {
            killsMap.put(UUID.fromString(key), plugin.stats.getConfig().getInt(key));
        }

        new BukkitRunnable() {
            @Override
            public void run () {
                for (UUID uuid : killsMap.keySet()) {
                    plugin.stats.getConfig().set(uuid.toString(), killsMap.get(uuid));


                }
                plugin.stats.saveConfig();
            }
        }.runTaskTimer(plugin, 0, 10 * 20);
        new BukkitRunnable() {
            @Override
            public void run() {
                killsMap = Utils.sortByValue(killsMap);
            }
        }.runTaskTimer(plugin, 0, 2 * 20);
    }

    @EventHandler
    public void killUpdate(PlayerDeathEvent event) {
        Player killer = event.getEntity().getKiller();
        killer.sendMessage(Utils.chat("&aA kill has been added to your stats!"));
        killsMap.put(killer.getUniqueId(), killsMap.getOrDefault(killer.getUniqueId(), 0) + 1);
//        if (plugin.stats.getConfig().contains((killer.getUniqueId().toString()))) {
//            plugin.stats.getConfig().set(("kills." + killer.getUniqueId().toString()), 1);
//
////            List<String> s = plugin.stats.getConfig().getStringList("backend_stats");
////            s.add(killer.getUniqueId().toString());
////            plugin.stats.getConfig().set("backend_stats", s);
//
//        } else {
//            int currentKills = plugin.stats.getConfig().getInt(killer.getUniqueId().toString());
//            plugin.stats.getConfig().set(("kills." + killer.getUniqueId().toString()), currentKills + 1);
//
//        }
//        plugin.stats.saveConfig();
    }


}