EvoCalculator.Core/EvoCalculator.Core.Calculation/Columns/TLMExpensesColumn.cs

using System.Linq;
using EvoCalculator.Core.Models.Calculation.Models.Prepared;

namespace EvoCalculator.Core.Calculation.Columns
{
    public class TLMExpensesColumn : BaseColumn<double>
    {
        public TLMExpensesColumn(int count) : base(count)
        {
        }

        public void ComputeValues(PreparedValues preparedValues, PreparedPayments preparedPayments)
        {
            Values[1] = -(preparedValues.TLMCost + preparedPayments.Rows[0].TlmBasePayment);
            for (var i = 2; i < Values.Length; i++)
            {
                Values[i] = -preparedPayments.Rows[i - 1].TlmBasePayment;
            }

            Values[0] = Values.Skip(1).Sum(x => x);
        }
    }
}