minecraft-kajetans-mod/src/main/java/me/km/commands/CommandEnchant.java

package me.km.commands;

import me.kt.api.GlobalText;
import me.kt.api.Module;
import me.kt.api.ModuleCommand;
import me.kt.api.SimpleTabCompleter;
import java.util.Arrays;
import java.util.stream.Collectors;
import org.bukkit.Material;
import org.bukkit.command.CommandSender;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;

public class CommandEnchant extends ModuleCommand
{
    public CommandEnchant(Module m) 
    {
        super("enchant", m);
        this.setDescription("Erzeugt Custom-Enchants");
        this.setUsage("/enchant <enchant> <level>");
        this.setPermission("kt.enchant");       
        
        m.registerTabCompleter("enchant", new SimpleTabCompleter(
            Arrays.asList(Enchantment.values()).stream().map(n -> n.getName()).collect(Collectors.toList()), 1));
    }

    @Override
    public boolean execute(CommandSender cs, String string, String[] arg) 
    {
        if(!(cs instanceof Player))
        {
            this.getModule().send(cs, GlobalText.onlyPlayer());
            return true;
        }
        Player p = (Player) cs;
        ItemStack hand = p.getInventory().getItemInMainHand();
        if(hand.getType() == Material.AIR)
        {
            this.getModule().send(cs, "Du musst ein Item in der Hand halten.");
            return true;
        }
        if(arg.length < 2)
        {
            return false;
        }
        Enchantment ench = Enchantment.getByName(arg[0]);
        if(ench == null)
        {
            this.getModule().send(cs, "Das gegebene Enchantment existiert nicht.");
            return true;
        }       
        try
        {
            int i = Integer.parseInt(arg[1]);
            if(i < 1)
            {
                throw new NumberFormatException();
            } 
            hand.addUnsafeEnchantment(ench, i);
            p.getInventory().setItemInMainHand(hand);
            this.getModule().send(cs, "Das Enchantment wurde hinzugefügt.");
            return true;
        }
        catch(NumberFormatException ex)
        {
            this.getModule().send(cs, GlobalText.noPositiveNaturalNumber());            
        }
        return true;
    }
}