minecraft-kajetans-mod/src/main/java/me/km/scrolls/CommandScroll.java

package me.km.scrolls;

import java.util.Arrays;
import java.util.stream.Collectors;
import me.km.api.GlobalText;
import me.km.api.Module;
import me.km.api.ModuleTabCommand;
import me.km.api.Utils;
import me.km.effects.ActiveEffectBase;
import me.km.effects.Effect;
import me.km.effects.EffectUtils;
import me.km.items.ModItems;
import me.km.permissions.Permissions;
import me.km.utils.ItemStackBuilder;
import net.minecraft.command.ICommandSender;
import net.minecraft.entity.player.EntityPlayer;

public class CommandScroll extends ModuleTabCommand
{
    public CommandScroll(Module m) 
    {
        super("magicscroll", m, Arrays.stream(Effect.values()).map(n -> n.getEffectString()).filter(o -> o != null).collect(Collectors.toList()), 0);
        super.setDescription("Erstellt Schriftrollen");
        super.setUsage("/magicscroll <name> [level] [amount]");
        super.setPermission(Permissions.SCROLL);
        super.addAlias("msc");
    }

    @Override
    public boolean execute(ICommandSender cs, String[] arg) 
    {
        if(arg.length < 1)
        {
            return false;
        }
        if(!(cs instanceof EntityPlayer))
        {
            this.getModule().send(cs, GlobalText.onlyPlayer());
            return true;
        }
        EntityPlayer p = (EntityPlayer) cs;
        Class<? extends ActiveEffectBase> c = EffectUtils.getEffectClass(arg[0]);
        if(c == null)
        { 
            this.getModule().send(cs, "Dieser aktive Effekt existiert nicht.");
            return true;
        }
        int level = 1;
        try
        {               
            level = Integer.parseInt(arg[1]);
            if(level <= 0)
            {
                this.getModule().send(cs, GlobalText.noPositiveNaturalNumber());
                return true;
            }
        }
        catch(NumberFormatException | ArrayIndexOutOfBoundsException ex)
        {
        }
        int amount = 1;
        try
        {               
            amount = Integer.parseInt(arg[2]);
            if(amount <= 0)
            {
                this.getModule().send(cs, GlobalText.noPositiveNaturalNumber());
                return true;
            }
        }
        catch(NumberFormatException | ArrayIndexOutOfBoundsException ex)
        {
        }     
        new ItemStackBuilder(ModItems.scroll, amount).setName(arg[0] + " " + Utils.intToRoman(level)).drop(p.world, p.getPosition());
        return true;
    }
}