public async Task <OperationResult <int> > AggregateCost(IEnumerable <int> portfolioIds, int userId)
{
var cost = 0;
var ids = portfolioIds.ToList();
foreach (var portfolioId in ids)
{
var resultCost = await _portfolioService.GetCost(portfolioId, userId);
if (!resultCost.IsSuccess)
{
return(resultCost);
}
cost += resultCost.Result;
}
return(new OperationResult <int>()
{
IsSuccess = true,
Message = $"Суммарная стоимость портфелей(я) c id={string.Join(", ", ids)}",
Result = cost
});
}