public async Task <T> PostAsync <T>(T postObject)
{
await _context.AddAsync(postObject);
await _context.SaveChangesAsync();
return(postObject);
}
public async Task <ReservationResultDto> ReserveAsync(ReserveDto model)
{
var productIds = model.Items
.Select(i => i.Id)
.ToList();
var strategy = _context.Database.CreateExecutionStrategy();
return(await strategy.ExecuteAsync(async() =>
{
await using var transaction = _context.Database.BeginTransaction();
try
{
var warehouseItems = await GetWarehouseItems(productIds);
var reserve = new Reserve
{
CreationDate = DateTime.Now
};
foreach (var item in model.Items)
{
var warehouseItem = warehouseItems
.FirstOrDefault(i => i.ProductId == item.Id);
if (warehouseItem == null)
{
throw new ProductNotFoundException(item.Id);
}
if (warehouseItem.Balance < item.Quantity)
{
throw new InsufficientProductQuantityException(item.Id, warehouseItem.Balance);
}
reserve.ReserveItems.Add(new ReserveItem
{
ProductId = item.Id,
Quantity = item.Quantity
});
}
await _context.AddAsync(reserve);
IncreaseProductReservedQuantity(warehouseItems, reserve.ReserveItems);
await _context.SaveChangesAsync();
await transaction.CommitAsync();
return reserve.MapToReservationResultDto();
}
catch
{
await transaction.RollbackAsync();
throw;
}
}));
}
private async Task AddModelAsync(IModel modelToPut)
{
await _context.AddAsync(modelToPut);
await _context.SaveChangesAsync();
}