ActionBar util

ActionBar.java

package xyz.saboteur.spigot.util;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;

public class ActionBar {
	
	private static String nmsVersion;

	public static void sendActionBar(Player player, String message) {
		if(nmsVersion == null) {
			nmsVersion = (nmsVersion = Bukkit.getServer().getClass().getPackage().getName()).substring(nmsVersion.lastIndexOf(".") + 1);
		}
		try {
			Class<?> c1 = Class.forName("org.bukkit.craftbukkit." + nmsVersion + ".entity.CraftPlayer");
			Object p = c1.cast(player);
			Object ppoc;
			Class<?> c2, c3,
					c4 = Class.forName("net.minecraft.server." + nmsVersion + ".PacketPlayOutChat"),
					c5 = Class.forName("net.minecraft.server." + nmsVersion + ".Packet");
			Object o;
			if ((nmsVersion.equalsIgnoreCase("v1_8_R1") || !nmsVersion.startsWith("v1_8_")) && !nmsVersion.startsWith("v1_9_")) {
				c2 = Class.forName("net.minecraft.server." + nmsVersion + ".ChatSerializer");
				c3 = Class.forName("net.minecraft.server." + nmsVersion + ".IChatBaseComponent");
				Method m3 = c2.getDeclaredMethod("a", String.class);
				o = c3.cast(m3.invoke(c2, "{\"text\": \"" + message + "\"}"));
			} else {
				c2 = Class.forName("net.minecraft.server." + nmsVersion + ".ChatComponentText");
				c3 = Class.forName("net.minecraft.server." + nmsVersion + ".IChatBaseComponent");
				o = c2.getConstructor(new Class<?>[]{String.class}).newInstance(message);
			}
			ppoc = c4.getConstructor(new Class<?>[]{c3, byte.class}).newInstance(o, (byte) 2);
			Method m1 = c1.getDeclaredMethod("getHandle");
			Object h = m1.invoke(p);
			Field f1 = h.getClass().getDeclaredField("playerConnection");
			Object pc = f1.get(h);
			Method m5 = pc.getClass().getDeclaredMethod("sendPacket", c5);
			m5.invoke(pc, ppoc);
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}
	
}