package org.bukkit.command.defaults;

import com.google.common.collect.ImmutableList;
import org.bukkit.ChatColor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.potion.PotionEffect;
import org.bukkit.potion.PotionEffectType;
import org.bukkit.util.StringUtil;

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

public class EffectCommand extends VanillaCommand
{
	private static final List<String> effects;

	public EffectCommand()
	{
		super("effect");
		this.description = "Adds/Removes effects on players";
		this.usageMessage = "/effect <player> <effect|clear> [seconds] [amplifier]";
		this.setPermission("bukkit.command.effect");
	}

	static
	{
		ImmutableList.Builder<String> builder = ImmutableList.<String>builder();

		for(PotionEffectType type : PotionEffectType.values())
		{
			if(type != null)
			{
				builder.add(type.getName());
			}
		}

		effects = builder.build();
	}

	@Override
	public boolean execute(CommandSender sender, String commandLabel, String[] args)
	{
		if(!testPermission(sender))
		{
			return true;
		}

		if(args.length < 2)
		{
			sender.sendMessage(getUsage());
			return true;
		}

		final Player player = sender.getServer().getPlayer(args[0]);

		if(player == null)
		{
			sender.sendMessage(ChatColor.RED + String.format("Player, %s, not found", args[0]));
			return true;
		}

		if("clear".equalsIgnoreCase(args[1]))
		{
			for(PotionEffect effect : player.getActivePotionEffects())
			{
				player.removePotionEffect(effect.getType());
			}
			sender.sendMessage(String.format("Took all effects from %s", args[0]));
			return true;
		}

		PotionEffectType effect = PotionEffectType.getByName(args[1]);

		if(effect == null)
		{
			effect = PotionEffectType.getById(getInteger(sender, args[1], 0));
		}

		if(effect == null)
		{
			sender.sendMessage(ChatColor.RED + String.format("Effect, %s, not found", args[1]));
			return true;
		}

		int duration = 600;
		int duration_temp = 30;
		int amplification = 0;

		if(args.length >= 3)
		{
			duration_temp = getInteger(sender, args[2], 0, 1000000);
			if(effect.isInstant())
			{
				duration = duration_temp;
			}
			else
			{
				duration = duration_temp * 20;
			}
		}
		else if(effect.isInstant())
		{
			duration = 1;
		}

		if(args.length >= 4)
		{
			amplification = getInteger(sender, args[3], 0, 255);
		}

		if(duration_temp == 0)
		{
			if(!player.hasPotionEffect(effect))
			{
				sender.sendMessage(String.format("Couldn't take %s from %s as they do not have the effect", effect.getName(), args[0]));
				return true;
			}

			player.removePotionEffect(effect);
			broadcastCommandMessage(sender, String.format("Took %s from %s", effect.getName(), args[0]));
		}
		else
		{
			final PotionEffect applyEffect = new PotionEffect(effect, duration, amplification);

			player.addPotionEffect(applyEffect, true);
			broadcastCommandMessage(sender, String.format("Given %s (ID %d) * %d to %s for %d seconds", effect.getName(), effect.getId(), amplification, args[0], duration_temp));
		}

		return true;
	}

	@Override
	public List<String> tabComplete(CommandSender sender, String commandLabel, String[] args)
	{
		if(args.length == 1)
		{
			return super.tabComplete(sender, commandLabel, args);
		}
		else if(args.length == 2)
		{
			return StringUtil.copyPartialMatches(args[1], effects, new ArrayList<String>(effects.size()));
		}

		return ImmutableList.of();
	}
}