package pl.kopara.kguild.tablist;


import pl.kopara.kguild.utils.Reflection;

import java.util.Arrays;
import java.util.Collection;

public class TabUtil
{
    private static Class<?> packetClass;
    private static Reflection.ConstructorInvoker con;
    private static Reflection.FieldAccessor<String> a;
    private static Reflection.FieldAccessor<String> b;
    private static Reflection.FieldAccessor<String> c;
    private static Reflection.FieldAccessor<String> d;
    private static Reflection.FieldAccessor<Collection> e;
    private static Reflection.FieldAccessor<Integer> f;
    private static Reflection.FieldAccessor<Integer> g;
    private static Class<?> packetClassPlayer;
    private static Reflection.ConstructorInvoker conPlayer;

    public static Object createTeamPacket(final String name, final String display, final String prefix, final String suffix, final int flag, final String... members) {
        final Object packet = TabUtil.con.invoke(new Object[0]);
        TabUtil.a.set(packet, (name.length() > 16) ? name.substring(0, 16) : name);
        TabUtil.f.set(packet, flag);
        if (flag == 0 || flag == 2) {
            if (display == null) {
                TabUtil.b.set(packet, "");
            }
            else if (display.length() > 16) {
                TabUtil.b.set(packet, display.substring(0, 16));
            }
            else {
                TabUtil.b.set(packet, display);
            }
            if (prefix == null) {
                TabUtil.c.set(packet, "");
            }
            else if (prefix.length() > 16) {
                TabUtil.c.set(packet, prefix.substring(0, 16));
            }
            else {
                TabUtil.c.set(packet, prefix);
            }
            if (suffix == null) {
                TabUtil.d.set(packet, "");
            }
            else if (suffix.length() > 16) {
                TabUtil.d.set(packet, suffix.substring(0, 16));
            }
            else {
                TabUtil.d.set(packet, suffix);
            }
            TabUtil.g.set(packet, 0);
            if (flag == 0) {
                TabUtil.e.set(packet, Arrays.asList(members));
            }
        }
        return packet;
    }

    public static Object createPlayerPacket(final String name, final boolean visible, final int ping) {
        return TabUtil.conPlayer.invoke(name, visible, ping);
    }

    static {
        TabUtil.packetClass = Reflection.getMinecraftClass("PacketPlayOutScoreboardTeam");
        TabUtil.con = Reflection.getConstructor(TabUtil.packetClass, (Class<?>[])new Class[0]);
        TabUtil.a = Reflection.getField(TabUtil.packetClass, "a", String.class);
        TabUtil.b = Reflection.getField(TabUtil.packetClass, "b", String.class);
        TabUtil.c = Reflection.getField(TabUtil.packetClass, "c", String.class);
        TabUtil.d = Reflection.getField(TabUtil.packetClass, "d", String.class);
        TabUtil.e = (Reflection.FieldAccessor<Collection>)Reflection.getField(TabUtil.packetClass, "e", Collection.class);
        TabUtil.f = Reflection.getField(TabUtil.packetClass, "f", Integer.TYPE);
        TabUtil.g = Reflection.getField(TabUtil.packetClass, "g", Integer.TYPE);
        TabUtil.packetClassPlayer = Reflection.getMinecraftClass("PacketPlayOutPlayerInfo");
        TabUtil.conPlayer = Reflection.getConstructor(TabUtil.packetClassPlayer, String.class, Boolean.TYPE, Integer.TYPE);
    }
}