package net.ess3.commands;

import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import static net.ess3.I18n._;
import net.ess3.api.IUser;
import net.ess3.bukkit.Enchantments;
import net.ess3.permissions.Permissions;
import net.ess3.utils.Util;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;


public class Commandenchant extends EssentialsCommand
{
	//TODO: Implement charge costs: final Trade charge = new Trade("enchant-" + enchantmentName, ess);
	@Override
	protected void run(final IUser user, final String commandLabel, final String[] args) throws Exception
	{
		final ItemStack stack = user.getPlayer().getItemInHand();
		if (stack == null)
		{
			throw new Exception(_("You have nothing in your hand."));
		}
		if (args.length == 0)
		{
			final Set<String> enchantmentslist = new TreeSet<String>();
			for (Map.Entry<String, Enchantment> entry : Enchantments.entrySet())
			{
				final String enchantmentName = entry.getValue().getName().toLowerCase(Locale.ENGLISH);
				if (enchantmentslist.contains(enchantmentName) || (Permissions.ENCHANT.isAuthorized(user, enchantmentName) && entry.getValue().canEnchantItem(stack)))
				{
					enchantmentslist.add(entry.getKey());
					//enchantmentslist.add(enchantmentName);
				}
			}
			throw new NotEnoughArgumentsException(_("Enchantments: {0}", Util.joinList(enchantmentslist.toArray())));
		}
		int level = -1;
		if (args.length > 1)
		{
			try
			{
				level = Integer.parseInt(args[1]);
			}
			catch (NumberFormatException ex)
			{
				level = -1;
			}
		}
		final boolean allowUnsafe = Permissions.ENCHANT_UNSAFE.isAuthorized(user);
		final Enchantment enchantment = getEnchantment(args[0], user);
		if (level < 0 || (!allowUnsafe && level > enchantment.getMaxLevel()))
		{
			level = enchantment.getMaxLevel();
		}
		if (level == 0)
		{
			stack.removeEnchantment(enchantment);
		}
		else
		{
			if (allowUnsafe)
			{
				stack.addUnsafeEnchantment(enchantment, level);
			}
			else
			{
				stack.addEnchantment(enchantment, level);
			}
		}
		final Player player = user.getPlayer();
		player.getInventory().setItemInHand(stack);
		player.updateInventory();
		final String enchantmentName = enchantment.getName().toLowerCase(Locale.ENGLISH);
		if (level == 0)
		{
			user.sendMessage(_("The enchantment {0} has been removed from your item in hand.", enchantmentName.replace('_', ' ')));
		}
		else
		{
			user.sendMessage(_("The enchantment {0} has been applied to your item in hand.", enchantmentName.replace('_', ' ')));
		}
	}

	public static Enchantment getEnchantment(final String name, final IUser user) throws Exception
	{

		final Enchantment enchantment = Enchantments.getByName(name);
		if (enchantment == null)
		{
			throw new Exception(_("Enchantment not found!"));
		}
		final String enchantmentName = enchantment.getName().toLowerCase(Locale.ENGLISH);
		if (user != null && !Permissions.ENCHANT.isAuthorized(user, enchantmentName))
		{
			throw new Exception(_("You do not have the permission for {0}.", enchantmentName));
		}
		return enchantment;
	}
}