package com.gatelab.rwm.business.finanzastrutturata.engine.input.fragment;

import java.util.Vector;

import com.gatelab.rwm.business.finanzastrutturata.engine.utils.FSEngineConstants;
import com.gatelab.rwm.business.finanzastrutturata.helpers.FSConfigurationReader;
import com.gatelab.rwm.lib.exception.BusinessException;

public class AddOnIfrs9 {

    private final double expectedLossPA1Y;  /* 1 Year */
    private final double expectedLossPANPV; /* NPV */
    private final int duration;
    private FSConfigurationReader configurationReader;

    private Vector<Double> auditVector;

    public AddOnIfrs9(int duration, double expectedLossPA1Y, double expectedLossPANPV,
            FSConfigurationReader configurationReader) {
        super();
        this.duration = duration;
        this.auditVector = new Vector<Double>(duration);
        this.expectedLossPA1Y = expectedLossPA1Y;
        this.expectedLossPANPV = expectedLossPANPV;
        this.configurationReader = configurationReader;
    }

    public double applyAddon(double regulatoryCapitalNpv, AddOnInfo addInfo) throws BusinessException{
        if(addInfo.isAddon()) {
            double addon = 0d;
            double[] confValues = this.configurationReader.getAddonList(addInfo.getSegmentRegulamentarType(), addInfo.getRatingModel(), addInfo.getRating());
            double addonFactor = ( Math.abs(this.expectedLossPANPV) - Math.abs(this.expectedLossPA1Y)) / this.duration;
            for(int month=0 ; month < this.duration ; month++) {
                double addonMonthly = addonFactor * confValues[month % FSEngineConstants.MONTH_PER_YEAR];
                addon += addonMonthly;

                this.auditVector.add(addonMonthly);
            }
            regulatoryCapitalNpv += addon;
        }
        return regulatoryCapitalNpv;
    }

    @Override
    public String toString() {
        return "\n AddOnIfrs9 [expectedLossPA1Y=" + expectedLossPA1Y + ", expectedLossPANPV=" + expectedLossPANPV
                + ", duration=" + duration + " \n CalculationVector="+this.auditVector.toString()+"]\n";
    }



}