EntityInfo.java

package org.minecraftsmp.entityinfo;

import java.util.Arrays;
import java.util.List;
import java.util.ArrayList;

import org.minecraftsmp.arraylib.ArrayManipulator;

import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.event.Listener;
import org.bukkit.event.HandlerList;

import org.bukkit.event.EventHandler;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;

import org.bukkit.event.player.PlayerInteractEntityEvent;
import org.bukkit.entity.Player;
import org.bukkit.entity.Damageable;
import org.bukkit.entity.Entity;

public final class EntityInfo extends JavaPlugin implements Listener {
    private List<String> enabledPlayersId;
    private List<String> enabledPlayersInfo;

    public void onEnable() {
        enabledPlayersId = new ArrayList<String>();
        enabledPlayersInfo = new ArrayList<String>();
        getServer().getPluginManager().registerEvents(this, this);
    }

    public void onDisable() {
        HandlerList.unregisterAll((JavaPlugin)this);
    }

    public String[] entityId(Entity e) {
        List<String> id = new ArrayList<String>();
        id.add("§eEntity ID: §f" + e.getEntityId());
        id.add("§eUUID: §f" + e.getUniqueId());
        return id.toArray(new String[id.size()]);
    }

    public String[] entityInfo(Entity e) {
        List<String> info = new ArrayList<String>();
        info.add(("§eEntity Type: §f" + e.getType()));
        return info.toArray(new String[info.size()]);
    }

    @EventHandler
    public void onPlayerInteractEntity(PlayerInteractEntityEvent event) {
        if (enabledPlayersId.contains(event.getPlayer().getName())) {
            event.getPlayer().sendMessage(entityId(event.getRightClicked()));
        }
        if (enabledPlayersInfo.contains(event.getPlayer().getName())) {
            event.getPlayer().sendMessage(entityInfo(event.getRightClicked()));
        }
    }

    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        if (command.getName().equals("entityinfo")) {
            //No subcommand
            if (args.length < 1) {
                sender.sendMessage("§cSubcommand required.");
                return true;
            }

            //One subcommand.
            else if (args.length == 1) {

                //Enabled showing of IDs (Entity and Universally Unique).
                if (args[0].equals("id")) {
                    if (!(sender instanceof Player)) {
                        sender.sendMessage("§eSilly console, this command is for players.");
                        return true;
                    }
                    if (enabledPlayersId.contains(sender.getName())) {
                        enabledPlayersId.remove(enabledPlayersId.indexOf(sender.getName()));
                        sender.sendMessage("§bToggled show ID on right click off.");
                        return true;
                    } else {
                        if (enabledPlayersId.size() == 0) {
                            enabledPlayersId = Arrays.asList(sender.getName());
                        } else {
                            enabledPlayersId.add(sender.getName());
                        }
                        sender.sendMessage("§bToggled show ID on right click on.");
                        return true;
                    }
                }

                //Enable showing entity info.
                else if (args[0].equals("info")) {
                    if (!(sender instanceof Player)) {
                        sender.sendMessage("§eSilly console, this command is for players.");
                        return true;
                    }
                    if (enabledPlayersInfo.contains(sender.getName())) {
                        enabledPlayersInfo.remove(sender.getName());
                        sender.sendMessage("§bToggled show info on right click off.");
                        return true;
                    } else {
                        enabledPlayersInfo.add(sender.getName());
                        sender.sendMessage("§bToggled show info on right click on.");
                        return true;
                    }
                }
                return true;
            }

            //Too many subcommands.
            else {
                sender.sendMessage("§cToo many arguments.");
                return true;
            }
        }

        //Command wasn't meant for us!
        else
        {return true;}
    }
}