CREER UN PLUGIN BUKKIT #12 - Les Cooldowns

package ep12;

import java.util.HashMap;

import org.bukkit.Material;
import org.bukkit.Sound;
import org.bukkit.World;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin{

	public HashMap<String, Long> cooldowns = new HashMap <String, Long>();
	public int cooldown = 120;

	public void add(Player p){
		cooldowns.put(p.getName(), System.currentTimeMillis());
	}


	public boolean has(Player p){
		return cooldowns.containsKey(p.getName()) ? true : false;
	}


	public void remove(Player p){
		cooldowns.remove(p.getName());
	}


	public Long scnd(Player p){
		long scndleft = ((cooldowns.get (p.getName()) /1000) + cooldown) - System.currentTimeMillis() / 1000;

		/* /12 > Ajouter a l'HashMap avec NAME + TEMPS 1
		 *  On recupere le NAME + TEMPS 1
		 * On ajoute le temps d'attente (cooldown) auquel on suprime le TEMPS 2 (temps actuel)
		 *
		 * Name    + Temps 1   + Temps d'attente
		 * Vinetos + 08:29:00 + 120 -  08:30:00 = 1
		 */
		return scndleft;
	}


	public Long min(Player p){
      long minleft = ((((cooldowns.get (p.getName()) /1000) + cooldown) - System.currentTimeMillis() / 1000) / 60) +1;
		return minleft;
	}


	public boolean onCommand(CommandSender send, Command cmd, String label, String[] args){
		if(!(send instanceof Player)){
			send.sendMessage("§cTu dois etre un joueur pour effectuer cette commande !");
		}

		Player p = (Player) send;
		Inventory inv = p.getInventory();
		ItemStack is = new ItemStack(Material.OBSIDIAN);
		World w = p.getWorld();

		if(cmd.getName().equalsIgnoreCase("12")||send.isOp()){
			if(has(p)){
				if(scnd(p) <= 0){
					remove(p);
					return true;
				}
				if(scnd(p) >= 60){
					p.sendMessage("§2Vous devez patientez§4 "+min(p)+" minutes §2!");
					return true;
				}
				if(scnd(p) <= 59){
					p.sendMessage("§2Vous devez patientez§4 "+scnd(p)+" secondes §2!");
					return true;
				}
			}else{
				inv.addItem(is);
				p.sendMessage("§2Vous avez recus un block d'obsidienne !");
				w.playSound(p.getLocation(), Sound.ITEM_PICKUP, 10, 1);
				add(p);
			}


		}

		return false;

	}

}