using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Dem2
{
    internal class CalculationHelper
    {
        public static decimal CalculateMinOrderCost(
    int materialId,
    decimal currentStock,
    decimal minStock,
    decimal packSize,
    decimal pricePerUnit)
        {
            if (currentStock >= minStock) return 0;

            decimal needed = minStock - currentStock;
            decimal packsNeeded = Math.Ceiling(needed / packSize);
            decimal totalUnits = packsNeeded * packSize;
            return totalUnits * pricePerUnit;
        }
    }
}