gistfile1.txt

function calculatePaymentForPrequalifiedOffer(requestedAmount, loanOffer) {
  function calcPmnt(amount, apr, months){
    var interest = apr / 100 / 12;
    var x = Math.pow(1 + interest, months);
    var monthly = (requestedAmount*x*interest)/(x-1);
    return Math.round(monthly*100)/100;
  }
  var out = {};
  var months
  switch(loanOffer.termUnit){
    case "day" : months = (loanOffer.termLength / 365) * 12; break;
    case "month" : months = loanOffer.termLength; break;
    case "year" : months = loanOffer.termLength * 12; break;
  }
  //If its a static offer, the rate will be a range, so the monthly payment has to be a range.
  if(loanOffer.maxApr && loanOffer.minApr){
    out.maxMonthlyPayment = calcPmnt(requestedAmount, loanOffer.maxApr, months);
    out.minMonthlyPayment = calcPmnt(requestedAmount, loanOffer.minApr, months);
  } else {
    out.monthlyPayment = calcPmnt(requestedAmount, loanOffer.maxApr, months);
  }
  return out;
}