import java.lang.reflect.Field;

import me.squidboss.main.UUIDLibrary;
import net.minecraft.server.v1_7_R2.DataWatcher;
import net.minecraft.server.v1_7_R2.EntityPlayer;
import net.minecraft.server.v1_7_R2.Packet;
import net.minecraft.server.v1_7_R2.PacketPlayOutSpawnEntityLiving;
import net.minecraft.server.v1_7_R2.PacketPlayOutEntityDestroy;





import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.craftbukkit.v1_7_R2.entity.CraftPlayer;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;

public class DragonBar {
	public static final int ENTITY_ID = 1234;

	public static void sendPacket(Player player, Packet packet) {
		EntityPlayer entityPlayer = ((CraftPlayer) player).getHandle();
		entityPlayer.playerConnection.sendPacket(packet);
	}

	public static Field getField(Class<?> cl, String field_name) {
		try {
			Field field = cl.getDeclaredField(field_name);
			return field;
		} catch (SecurityException e) {
			e.printStackTrace();
		} catch (NoSuchFieldException e) {
			e.printStackTrace();
		}
		return null;
	}

	@SuppressWarnings("deprecation")
	public static PacketPlayOutSpawnEntityLiving getMobPacket(String text, Location loc, Integer health) {
		PacketPlayOutSpawnEntityLiving mobPacket = new PacketPlayOutSpawnEntityLiving();
		try {
			Field a = getField(mobPacket.getClass(), "a");
			a.setAccessible(true);
			a.set(mobPacket, (int) ENTITY_ID);

			Field b = getField(mobPacket.getClass(), "b");
			b.setAccessible(true);
			b.set(mobPacket, (byte) EntityType.ENDER_DRAGON.getTypeId());

			Field c = getField(mobPacket.getClass(), "c");
			c.setAccessible(true);
			c.set(mobPacket, (int) Math.floor(loc.getBlockX() * 32.0D));

			Field d = getField(mobPacket.getClass(), "d");
			d.setAccessible(true);
			d.set(mobPacket, (int) Math.floor(loc.getBlockY() * 32.0D));

			Field e = getField(mobPacket.getClass(), "e");
			e.setAccessible(true);
			e.set(mobPacket, (int) Math.floor(loc.getBlockZ() * 32.0D));

			Field f = getField(mobPacket.getClass(), "f");
			f.setAccessible(true);
			f.set(mobPacket, (byte) 0);

			Field g = getField(mobPacket.getClass(), "g");
			g.setAccessible(true);
			g.set(mobPacket, (byte) 0);

			Field h = getField(mobPacket.getClass(), "h");
			h.setAccessible(true);
			h.set(mobPacket, (byte) 0);

			Field i = getField(mobPacket.getClass(), "i");
			i.setAccessible(true);
			i.set(mobPacket, (byte) 0);

			Field j = getField(mobPacket.getClass(), "j");
			j.setAccessible(true);
			j.set(mobPacket, (byte) 0);

			Field k = getField(mobPacket.getClass(), "k");
			k.setAccessible(true);
			k.set(mobPacket, (byte) 0);

		} catch (IllegalArgumentException e1) {
			e1.printStackTrace();
		} catch (IllegalAccessException e1) {
			e1.printStackTrace();
		}

		DataWatcher watcher = getWatcher(text, health);

		try{
			Field t = PacketPlayOutSpawnEntityLiving.class.getDeclaredField("l");
			t.setAccessible(true);
			t.set(mobPacket, watcher);
		} catch(Exception ex){
			ex.printStackTrace();
		}

		return mobPacket;
	}

	public static PacketPlayOutEntityDestroy getDestroyEntityPacket() {
		PacketPlayOutEntityDestroy packet = new PacketPlayOutEntityDestroy();

		Field a = getField(packet.getClass(), "a");
		a.setAccessible(true);
		try {
			a.set(packet, new int[]{ENTITY_ID});
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		}

		return packet;
	}

	public static DataWatcher getWatcher(String text, int health) {
		DataWatcher watcher = new DataWatcher(null);

		watcher.a(0, (Byte) (byte) 0x20);
		watcher.a(6, (Float) (float) health);
		watcher.a(10, (String) text);
		watcher.a(11, (Byte) (byte) 1);

		return watcher;
	}

	@SuppressWarnings("deprecation")
	public static void displayDragonBar(String text, Player player, Locaiton loc, Integer health) {
		PacketPlayOutSpawnEntityLiving mobPacket = getMobPacket(text, loc, health);
		sendPacket(player, mobPacket);
	}

	@SuppressWarnings("deprecation")
	public static void deleteDragonBar(Player player) {
		PacketPlayOutEntityDestroy destroyEntityPacket = getDestroyEntityPacket();
		sendPacket(player, destroyEntityPacket);
	}
}