[Minecraft 1.8+] Packets API

package de.cynfos.api;

import java.lang.reflect.Field;

import net.minecraft.server.v1_8_R1.ChatSerializer;
import net.minecraft.server.v1_8_R1.EnumTitleAction;
import net.minecraft.server.v1_8_R1.IChatBaseComponent;
import net.minecraft.server.v1_8_R1.PacketPlayOutChat;
import net.minecraft.server.v1_8_R1.PacketPlayOutPlayerListHeaderFooter;
import net.minecraft.server.v1_8_R1.PacketPlayOutTitle;
import net.minecraft.server.v1_8_R1.PlayerConnection;

import org.bukkit.craftbukkit.v1_8_R1.entity.CraftPlayer;
import org.bukkit.entity.Player;

public class PacketAPI {

    public static void sendActionBar(Player p, String msg) {
        if (msg == null) msg = "";

        PlayerConnection con = ((CraftPlayer)p).getHandle().playerConnection;

        IChatBaseComponent chat = ChatSerializer.a("{\"text\": \"" + msg + "\"}");
        PacketPlayOutChat packet = new PacketPlayOutChat(chat, (byte) 2);

        con.sendPacket(packet);
    }

    public static void sendTablist(Player p, String header, String footer) {
        if (header == null) header = "";
        if (footer == null) footer = "";

        PlayerConnection con = ((CraftPlayer)p).getHandle().playerConnection;

        IChatBaseComponent tabheader = ChatSerializer.a("{\"text\": \"" + header + "\"}");
        IChatBaseComponent tabfooter = ChatSerializer.a("{\"text\": \"" + footer + "\"}");

        PacketPlayOutPlayerListHeaderFooter packet = new PacketPlayOutPlayerListHeaderFooter(tabheader);

        try {
            Field f = packet.getClass().getDeclaredField("b");
            f.setAccessible(true);
            f.set(packet, tabfooter);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            con.sendPacket(packet);
        }
    }

    public static void sendTitle(Player p, String msg) {
        if (msg == null) msg = "";

        PlayerConnection con = ((CraftPlayer)p).getHandle().playerConnection;
        IChatBaseComponent title = ChatSerializer.a("{\"text\": \"" + msg + "\"}");

        PacketPlayOutTitle packet = new PacketPlayOutTitle(EnumTitleAction.TITLE, title);

        con.sendPacket(packet);

    }

    public static void sendSubTitle(Player p, String msg) {
        if (msg == null) msg = "";

        PlayerConnection con = ((CraftPlayer)p).getHandle().playerConnection;
        IChatBaseComponent subtitle = ChatSerializer.a("{\"text\": \"" + msg + "\"}");

        PacketPlayOutTitle packet = new PacketPlayOutTitle(EnumTitleAction.SUBTITLE, subtitle);

        con.sendPacket(packet);

    }

    public static void sendKlickableChatMessage(Player p, String startMessage, String linkedMessage, String endMessage, String hoverMessage, String commandToRun) {
        if (startMessage == null) startMessage = "";
        if (endMessage == null) endMessage = "";
        if (hoverMessage == null) hoverMessage = "";
        if (commandToRun == null) commandToRun = "";

        PlayerConnection con = ((CraftPlayer)p).getHandle().playerConnection;

        IChatBaseComponent chat = ChatSerializer.a("{\"text\":\"" + startMessage + "\",\"extra\":"
                + "[{\"text\":\"" + linkedMessage + "\",\"clickEvent\":{\"action\":\"run_command\","
                + "\"value\":\"/" + commandToRun + "\"},\"hoverEvent\":{\"action\":\"show_text\","
                + "\"value\":\"" + hoverMessage + "\"}}]}").a(endMessage);

        PacketPlayOutChat packet = new PacketPlayOutChat(chat);

        con.sendPacket(packet);
    }

}