EnergonRelics/src/main/java/com/thebrokenrail/energonrelics/item/MultimeterItem.java

package com.thebrokenrail.energonrelics.item;

import com.thebrokenrail.energonrelics.EnergonRelics;
import com.thebrokenrail.energonrelics.energy.core.EnergyReceiverBlockEntity;
import com.thebrokenrail.energonrelics.energy.helper.EnergyGenerator;
import net.minecraft.block.entity.BlockEntity;
import net.minecraft.item.Item;
import net.minecraft.item.ItemUsageContext;
import net.minecraft.text.LiteralText;
import net.minecraft.text.MutableText;
import net.minecraft.text.Text;
import net.minecraft.text.TranslatableText;
import net.minecraft.util.ActionResult;
import net.minecraft.util.Formatting;
import net.minecraft.world.World;

import java.util.Objects;

public class MultimeterItem extends Item {
    public MultimeterItem() {
        super(new Settings().maxCount(1).group(EnergonRelics.ITEM_GROUP));
    }

    private Text numberToText(long value) {
        String str;
        if (value >= Long.MAX_VALUE) {
            str = "\u221e";
        } else if (value == -1) {
            str = "N/A";
        } else {
            str = String.valueOf(value);
        }
        return new LiteralText(str).formatted(Formatting.WHITE);
    }

    @Override
    public ActionResult useOnBlock(ItemUsageContext context) {
        World world = context.getWorld();
        BlockEntity entity = world.getBlockEntity(context.getBlockPos());
        boolean success = false;
        MutableText text = new LiteralText("");
        if (entity instanceof EnergyGenerator) {
            if (!world.isClient() && context.getPlayer() != null) {
                text.append(new TranslatableText("text." + EnergonRelics.NAMESPACE + ".energy_available", numberToText(((EnergyGenerator) entity).getDisplayEnergy())).formatted(Formatting.YELLOW));
            }
            success = true;
        }
        if (entity instanceof EnergyReceiverBlockEntity) {
            if (!world.isClient() && context.getPlayer() != null) {
                if (success) {
                    text.append(" ");
                }
                text.append(new TranslatableText("text." + EnergonRelics.NAMESPACE + ".energy_required", numberToText(((EnergyReceiverBlockEntity) entity).getTotalCost())).formatted(Formatting.YELLOW));
            }
            success = true;
        }
        if (success) {
            if (!world.isClient()) {
                Objects.requireNonNull(context.getPlayer()).sendMessage(text, true);
            }
            EnergonRelics.playBeep(world, context.getBlockPos());
            return ActionResult.SUCCESS;
        } else {
            return ActionResult.PASS;
        }
    }
}