TFM-4.3-Reloaded/src/main/java/me/StevenLawson/TotalFreedomMod/commands/Command_nf.java

package me.StevenLawson.TotalFreedomMod.commands;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import me.StevenLawson.TotalFreedomMod.command.CommandBlocker;
import org.apache.commons.lang3.StringUtils;
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

@CommandPermissions(level = AdminLevel.OP, source = SourceType.BOTH)
public class Command_nf extends FreedomCommand {

	private static Player getPlayerByDisplayName(String needle) {
		needle = needle.toLowerCase().trim();

		for (Player player : Bukkit.getOnlinePlayers()) {
			if (player.getDisplayName().toLowerCase().trim().contains(needle)) {
				return player;
			}
		}

		return null;
	}

	private static Player getPlayerByDisplayNameAlt(String needle) {
		needle = needle.toLowerCase().trim();

		Integer minEditDistance = null;
		Player minEditMatch = null;

		for (Player player : Bukkit.getOnlinePlayers()) {
			String haystack = player.getDisplayName().toLowerCase().trim();
			int editDistance = StringUtils.getLevenshteinDistance(needle, haystack.toLowerCase());
			if (minEditDistance == null || minEditDistance.intValue() > editDistance) {
				minEditDistance = editDistance;
				minEditMatch = player;
			}
		}

		return minEditMatch;
	}

	@Override
	public boolean run(CommandSender sender, org.bukkit.entity.Player sender_p, Command cmd,
		String commandLabel, String[] args, boolean senderIsConsole) {
		boolean nickMatched = false;

		final List<String> outputCommand = new ArrayList<String>();

		if (args.length >= 1) {
			final String[] argsList = args;
			for (String arg : argsList) {
				Player player = null;

				Matcher matcher = Pattern.compile("^!(.+)$").matcher(arg);
				if (matcher.find()) {
					String displayName = matcher.group(1);

					player = getPlayerByDisplayName(displayName);

					if (player == null) {
						player = getPlayerByDisplayNameAlt(displayName);

						if (player == null) {
							sender.sendMessage(
								ChatColor.GRAY + "Can't find player by nickname: " + displayName);
							return true;
						}
					}
				}

				if (player == null) {
					outputCommand.add(arg);
				} else {
					nickMatched = true;
					outputCommand.add(player.getName());
				}
			}
		}

		if (!nickMatched) {
			sender.sendMessage("No nicknames replaced in command.");
			return true;
		}

		String newCommand = StringUtils.join(outputCommand, " ");

		if (CommandBlocker.isCommandBlocked(newCommand, sender)) {
			// CommandBlocker handles messages and broadcasts
			return true;
		}

		sender.sendMessage("Sending command: \"" + newCommand + "\".");
		server.dispatchCommand(sender, newCommand);

		return true;
	}
}