using System;
using System.Linq;
using EvoCalculator.Core.FinanceFormulas;
using EvoCalculator.Core.Models.Common;

namespace EvoCalculator.Core.Base.Columns;

public class BaseColumnWithXIRR : BaseColumn<decimal>
{
    protected BaseColumnWithXIRR(int count, BaseColumn<DateTime> dateTempColumn) : base(count)
    {
        Dates = dateTempColumn.Values;
    }

    protected BaseColumnWithXIRR(int count) : base(count)
    {
    }

    protected BaseColumnWithXIRR()
    {
    }

    public DateTime[] Dates { get; set; }

    private Flow[] Flows
    {
        get
        {
            var flows = new Flow[Values.Length];
            for (var i = 0; i < Values.Length; i++)
                flows[i] = new Flow
                {
                    Date = Dates[i],
                    Value = Values[i]
                };

            return flows;
        }
    }

    public double IRR
    {
        get
        {
            var XIRR = new XIRR(Flows);
            return XIRR.GetResult();
        }
    }

    public void RoundValues(int precision = 2)
    {
        Values = Values.Select(x => Math.Round(x, precision)).ToArray();
    }
}