private IEnumerable<ParseObject> UpdateDuplicateRecordsInternal(ref Purchase[] userCoupons)
{
var duplicateCoupons = userCoupons.Where(x => x.BundleKey != null)
.GroupBy(x => x.BundleKey.ObjectId)
.Where(x => x.Count() > 1)
.Union(userCoupons.Where(x => x.ClipKey != null).GroupBy(x => x.ClipKey.ObjectId).Where(x => x.Count() > 1));
var updateObjects = new List<ParseObject>();
foreach (var duplicateCouponList in duplicateCoupons)
{
var couponsToUpdate = duplicateCouponList.Except(new[] { duplicateCouponList.Last() }).ToArray();
couponsToUpdate.ForEach(x => x.PurchaseStatusCode = BL.Consts.CouponStatus.WasDuplicate);
userCoupons = userCoupons.Except(couponsToUpdate).ToArray();
updateObjects.AddRange(couponsToUpdate);
}
return updateObjects;
}