Nick

package de.maxl.nick;

import java.lang.reflect.Field;
import java.util.Collection;
import java.util.HashMap;

import org.bukkit.craftbukkit.v1_8_R3.entity.CraftPlayer;
import org.bukkit.entity.Player;
import org.bukkit.scheduler.BukkitRunnable;

import com.mojang.authlib.GameProfile;
import com.mojang.authlib.properties.Property;

import de.maxl.nick.utils.GameProfileBuilder;
import de.maxl.nick.utils.UUIDFetcher;
import de.maxl.nick.utils.Utils;
import net.minecraft.server.v1_8_R3.PacketPlayOutEntityDestroy;
import net.minecraft.server.v1_8_R3.PacketPlayOutNamedEntitySpawn;
import net.minecraft.server.v1_8_R3.PacketPlayOutPlayerInfo;
import net.minecraft.server.v1_8_R3.PacketPlayOutPlayerInfo.EnumPlayerInfoAction;

public class Nick {

	private static Main main = Main.getInstance();

	public static Field name;
	public static HashMap<Player, String> current = new HashMap<>();

	public static void nickPlayer(Player p, String nick) {
		CraftPlayer cp = (CraftPlayer) p;
		current.put(p, nick);

		try {
			name.set(cp.getProfile(), nick);
		} catch (Exception e) {
		}

		if(!setSkin(cp, nick)){
			p.sendMessage("§cDu konntest nicht genickt werden!");
			return;
		}

		PacketPlayOutEntityDestroy destroy = new PacketPlayOutEntityDestroy(cp.getEntityId());
		Utils.sendPacket(destroy, p);
		PacketPlayOutPlayerInfo removeTab = new PacketPlayOutPlayerInfo(EnumPlayerInfoAction.REMOVE_PLAYER,
				cp.getHandle());
		Utils.sendPacket(removeTab);
		new BukkitRunnable() {

			@Override
			public void run() {
				PacketPlayOutPlayerInfo addTab = new PacketPlayOutPlayerInfo(EnumPlayerInfoAction.ADD_PLAYER,
						cp.getHandle());
				Utils.sendPacket(addTab);
				PacketPlayOutNamedEntitySpawn spawn = new PacketPlayOutNamedEntitySpawn(cp.getHandle());
				Utils.sendPacket(spawn, p);
			}
		}.runTaskLater(main, 4);
	}

	public static boolean setSkin(CraftPlayer cp, String nick) {
		GameProfile skingp = cp.getProfile();
		try {
			skingp = GameProfileBuilder.fetch(UUIDFetcher.getUUID(nick));
		} catch (Exception e) {
			cp.sendMessage("§cDer Skin konnte nicht geladen werden.");
			e.printStackTrace();
			return false;
		}
		Collection<Property> prop = skingp.getProperties().get("textures");
		cp.getProfile().getProperties().removeAll("textures");
		cp.getProfile().getProperties().putAll("textures", prop);
		return true;
	}

}