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

namespace BaseCellSimulation.Enzyms.Nucleus
{
    public class RNA_Polymerase_II : InternalEnzym
    {
        private const double EnergyCostATP = 0.3;

        public RNA_Polymerase_II()
        {
            Km = 0.02;
            Vmax = 0.8;
        }

        public override void ApplyChanges(CellRessources res, double dt)
        {
            double dM = Math.Min(rate * dt, res.Res.Protein.NTP);
            dM = res.Res.Energy.ATP >= dM * EnergyCostATP ? dM : res.Res.Energy.ATP / EnergyCostATP;
            res.Res.Protein.NTP -= dM;
            res.Res.Protein.mRNA += dM;
            res.ConsumeATP(dM * EnergyCostATP);
        }

        public override void ComputeRate(Resources res)
        {
            Michaelis_Menten(res.Protein.NTP);
            rate *= res.Nucleus.ChromatinAccessibility;
        }
    }
}