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

package me.km.commands;

import me.km.api.GlobalText;
import me.km.api.Module;
import java.util.Arrays;
import java.util.stream.Collectors;
import me.km.api.ModuleTabCommand;
import me.km.permissions.Permissions;
import net.minecraft.command.ICommandSender;
import net.minecraft.enchantment.Enchantment;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;

public class CommandEnchant extends ModuleTabCommand
{
    public CommandEnchant(Module m) 
    {
        super("enchant", m, Enchantment.REGISTRY.getKeys().stream().map(r -> r.getResourcePath()).collect(Collectors.toList()), 0);  
        super.setDescription("Erzeugt Custom-Enchants");
        super.setUsage("/enchant <enchant> <level>");
        super.setPermission(Permissions.ENCHANT);       
    }

    @Override
    public boolean execute(ICommandSender cs, String[] arg) 
    {
        if(!(cs instanceof EntityPlayer))
        {
            this.getModule().send(cs, GlobalText.onlyPlayer());
            return true;
        }
        EntityPlayer p = (EntityPlayer) cs;
        ItemStack hand = p.getHeldItemMainhand();
        if(hand == ItemStack.EMPTY)
        {
            this.getModule().send(cs, "Du musst ein Item in der Hand halten.");
            return true;
        }
        if(arg.length < 2)
        {
            return false;
        }
        
        Enchantment ench = Enchantment.getEnchantmentByLocation(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.addEnchantment(ench, i);
            this.getModule().send(cs, "Das Enchantment wurde hinzugefügt.");
            return true;
        }
        catch(NumberFormatException ex)
        {
            this.getModule().send(cs, GlobalText.noPositiveNaturalNumber());            
        }
        return true;
    }
}