package de.warking.bausystem.commands;

import com.google.common.collect.ImmutableList;
import de.warking.bausystem.BauSystem;
import de.warking.hunjy.MySQL.BauweltMember;
import de.warking.hunjy.MySQL.WarkingUser;
import org.apache.commons.lang.Validate;
import org.bukkit.Bukkit;
import org.bukkit.GameMode;
import org.bukkit.command.CommandSender;
import org.bukkit.command.defaults.BukkitCommand;
import org.bukkit.entity.Player;
import org.bukkit.util.StringUtil;

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

public class CommandGamemode extends BukkitCommand {
    private static final List<String> GAMEMODE_NAMES = ImmutableList.of("adventure", "creative", "survival",
	    "spectator");

    public CommandGamemode() {
		super("gm");
		List<String> aliases = new ArrayList<>();
		aliases.add("gamemode");
		this.setAliases(aliases);
		this.description = "Ändert den Spielmodus eines Spielers";
		this.usageMessage = "/gm [Spielmodus]";
    }

    public boolean execute(CommandSender sender, String currentAlias, String[] args) {
		if (!(sender instanceof Player)) {
			return false;
		}else if (args.length == 0) {
			sender.sendMessage(BauSystem.PREFIX + this.usageMessage);
			return false;
		}

		Player p = (Player) sender;

		WarkingUser user = WarkingUser.get(p.getUniqueId());

		if(p.hasPermission("bau.team")){
			GameMode mode = createMode(args[0]);

			if(mode == null){
				p.sendMessage(BauSystem.PREFIX + "§cUnbekannter Spielmodus.");
				return false;
			}

			if(args.length == 2){
				Player target = Bukkit.getPlayerExact(args[1]);

				if (target == null) {
					p.sendMessage(BauSystem.PREFIX + "§cDieser Spieler ist derzeit offline.");
					return true;
				}
				if(p.getUniqueId().equals(target)){
					p.sendMessage(BauSystem.PREFIX + "§cSei eins mit dir selbst!");
					return false;
				}
				target.setGameMode(mode);
			}else{
				p.setGameMode(mode);
			}
			return true;
		}else if(args.length > 1){
			p.sendMessage(BauSystem.PREFIX + "§cDu darfst den Spielmodus anderer Spieler nicht ändern");
			return false;
		}else{
			UUID worldOwner;

			try{
				worldOwner = UUID.fromString(p.getWorld().getName());
			}catch(IllegalArgumentException E){
				p.sendMessage(BauSystem.PREFIX + "§cDu befindest dich auf keiner Bauwelt");
				return false;
			}

			if(!p.getUniqueId().equals(worldOwner)){
				BauweltMember member = BauweltMember.getBauMember(worldOwner, p.getUniqueId());
				if(member == null || !member.isBuild()){
					p.sendMessage(BauSystem.PREFIX + "§cDu darfst hier deinen Spielmodus nicht ändern");
					return false;
				}
			}
		}

		GameMode mode = createMode(args[0]);

		if(mode == null){
			p.sendMessage(BauSystem.PREFIX + "§cUnbekannter Spielmodus");
			return false;
		}

		p.setGameMode(mode);
		return true;
    }

    private GameMode createMode(String modeArg){
		try {
			return GameMode.getByValue(Integer.parseInt(modeArg));
		} catch (NumberFormatException ignored) {
			if ((modeArg.equalsIgnoreCase("creative")) || (modeArg.equalsIgnoreCase("c")))
				return GameMode.CREATIVE;
			else if ((modeArg.equalsIgnoreCase("adventure")) || (modeArg.equalsIgnoreCase("a")))
				return GameMode.ADVENTURE;
			else if ((modeArg.equalsIgnoreCase("spectator")) || (modeArg.equalsIgnoreCase("sp")))
				return GameMode.SPECTATOR;
			else {
				return GameMode.SURVIVAL;
			}
		}
	}


    public List<String> tabComplete(CommandSender sender, String alias, String[] args) {
		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)
			return ((List) StringUtil.copyPartialMatches(args[0], GAMEMODE_NAMES,
				new ArrayList(GAMEMODE_NAMES.size())));
		if (args.length == 2) {
			return super.tabComplete(sender, alias, args);
		}
		return ImmutableList.of();
    }
}