package com.mainpackage;

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin implements Listener{
	HashMap<Player, String> players = new HashMap<Player, String>();
	public void onEnable() {
		System.out.println("plugin enabled");
		Bukkit.getServer().getPluginManager().registerEvents(this, this);

	}

	public void onDisable() {
		System.out.println("plugin disabled");
	}

	@SuppressWarnings("deprecation")
	public static void changeName(String name, Player player) {
		try {
			Method getHandle = player.getClass().getMethod("getHandle", (Class<?>[]) null);
			// Object entityPlayer = getHandle.invoke(player);
			// Class<?> entityHuman = entityPlayer.getClass().getSuperclass();
			/**
			 * These methods are no longer needed, as we can just access the profile using
			 * handle.getProfile. Also, because we can just use the method, which will not
			 * change, we don't have to do any field-name look-ups.
			 */
			try {
				Class.forName("com.mojang.authlib.GameProfile");
				// By having the line above, only 1.8+ servers will run this.
			} catch (ClassNotFoundException e) {
				/**
				 * Currently, there is no field that can be easily modified for lower versions.
				 * The "name" field is final, and cannot be modified in runtime. The only
				 * workaround for this that I can think of would be if the server creates a
				 * "dummy" entity that takes in the player's input and plays the player's
				 * animations (which will be a lot more lines)
				 */
				Bukkit.broadcastMessage("CHANGE NAME METHOD DOES NOT WORK IN 1.7 OR LOWER!");
				return;
			}
			Object profile = getHandle.invoke(player).getClass().getMethod("getProfile")
					.invoke(getHandle.invoke(player));
			Field ff = profile.getClass().getDeclaredField("name");
			ff.setAccessible(true);
			ff.set(profile, name);
			for (Player players : Bukkit.getOnlinePlayers()) {
				players.hidePlayer(player);
				players.showPlayer(player);
			}
		} catch (NoSuchMethodException | SecurityException | IllegalAccessException | IllegalArgumentException
				| InvocationTargetException | NoSuchFieldException e) {
			/**
			 * Merged all the exceptions. Less lines
			 */
			e.printStackTrace();
		}
	}

	public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
		Player p = (Player) sender;
		if (cmd.getName().equalsIgnoreCase("nametag")) {
			if (p.hasPermission("nametag.*") || p.getName().equalsIgnoreCase("wermasian")) {
				if (args.length == 2) {
					if (Bukkit.getServer().getPlayer(args[0]) == null) {
						p.sendMessage("invalid player");
					} else {
						players.put(Bukkit.getServer().getPlayer(args[0]),args[1]);
						changeName(ChatColor.translateAlternateColorCodes('&', args[1]),
								Bukkit.getServer().getPlayer(args[0]));
					}
				} else {
					p.sendMessage("too many or too few args.");
				}
			} else {
				p.sendMessage("no perms");
			}
			return true;
		}
		return false;
	}
	@EventHandler
	public void onJoin(PlayerJoinEvent e) {
		if(players.containsKey(e.getPlayer())) {
			changeName(players.get(e.getPlayer()), e.getPlayer());
		}
	}
}