package org.bukkit.command.defaults;

import com.google.common.collect.ImmutableList;
import org.apache.commons.lang.Validate;
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.OfflinePlayer;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.util.StringUtil;

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

public class DeopCommand extends VanillaCommand
{
	public DeopCommand()
	{
		super("deop");
		this.description = "Takes the specified player's operator status";
		this.usageMessage = "/deop <player>";
		this.setPermission("bukkit.command.op.take");
	}

	@Override
	public boolean execute(CommandSender sender, String currentAlias, String[] args)
	{
		if(!testPermission(sender)) return true;
		if(args.length != 1 || args[0].length() == 0)
		{
			sender.sendMessage(ChatColor.RED + "Usage: " + usageMessage);
			return false;
		}

		OfflinePlayer player = Bukkit.getOfflinePlayer(args[0]);
		player.setOp(false);

		if(player instanceof Player)
		{
			((Player) player).sendMessage(ChatColor.YELLOW + "You are no longer op!");
		}

		Command.broadcastCommandMessage(sender, "De-opped " + args[0]);
		return true;
	}

	@Override
	public List<String> tabComplete(CommandSender sender, String alias, String[] args) throws IllegalArgumentException
	{
		Validate.notNull(sender, "Sender cannot be null");
		Validate.notNull(args, "Arguments cannot be null");
		Validate.notNull(alias, "Alias cannot be null");

		if(args.length == 1)
		{
			List<String> completions = new ArrayList<String>();
			for(OfflinePlayer player : Bukkit.getOperators())
			{
				String playerName = player.getName();
				if(StringUtil.startsWithIgnoreCase(playerName, args[0]))
				{
					completions.add(playerName);
				}
			}
			return completions;
		}
		return ImmutableList.of();
	}
}