// Support for rfc822, worst standard EVAR!

// require('./date')

function getRFC822Date(oDate)
{
  var aMonths = new Array("Jan", "Feb", "Mar", "Apr", "May", "Jun",
                          "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");

  var aDays = new Array( "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
  var dtm = new String();

  dtm = aDays[oDate.getDay()] + ", ";
  dtm += padWithZero(oDate.getDate()) + " ";
  dtm += aMonths[oDate.getMonth()] + " ";
  dtm += oDate.getFullYear() + " ";
  dtm += padWithZero(oDate.getHours()) + ":";
  dtm += padWithZero(oDate.getMinutes()) + ":";
  dtm += padWithZero(oDate.getSeconds()) + " " ;
  dtm += getTZOString(oDate.getTimezoneOffset());
  return dtm;
}
//Pads numbers with a preceding 0 if the number is less than 10.
function padWithZero(val)
{
  if (parseInt(val) < 10)
  {
    return "0" + val;
  }
  return val;
}

/* accepts the client's time zone offset from GMT in minutes as a parameter.
returns the timezone offset in the format [+|-}DDDD */
function getTZOString(timezoneOffset)
{
  var hours = Math.floor(timezoneOffset/60);
  var modMin = Math.abs(timezoneOffset%60);
  var s = new String();
  s += (hours > 0) ? "-" : "+";
  var absHours = Math.abs(hours)
  s += (absHours < 10) ? "0" + absHours :absHours;
  s += ((modMin == 0) ? "00" : modMin);
  return(s);
}

exports.getRFC822Date = getRFC822Date;