public async Task <Packaging> AddPackagingMovementAsync(AddPackagingMovementRequest packagingMovement)
{
try
{
if (packagingMovement == null)
{
throw new ArgumentNullException();
}
PackagingEntity packaging = await _context.Packagings
.FindAsync(packagingMovement.PackagingId)
.ConfigureAwait(false);
if (packaging != null && IsValidAmount(packaging.Total, packagingMovement))
{
packaging.Total = packagingMovement.Operation.Equals(Operation.Add) ?
packaging.Total + packagingMovement.Amount :
packaging.Total - packagingMovement.Amount;
PackagingMovementEntity entity = _mapper.Map <PackagingMovementEntity>(packagingMovement);
entity.Total = packaging.Total;
var added = await _context.PackagingMovements.AddAsync(entity);
if (added.State.Equals(EntityState.Added))
{
await _context.SaveChangesAsync().ConfigureAwait(false);
return(_mapper.Map <Packaging>(packaging));
}
}
_context.DetachAll();
}
catch (Exception e)
{
_context.DetachAll();
_logger.LogError(e, "Exception: {e} // Internal Error while adding new Packaging movement: {packagingMovement}",
e.Message, JsonSerializer.Serialize(packagingMovement));
}
return(null);
}
private bool IsValidAmount(int currentTotal, AddPackagingMovementRequest packagingMovement)
{
return(packagingMovement.Operation.Equals(Operation.Substract) ?
(currentTotal - packagingMovement.Amount) >= 0 :
packagingMovement.Amount >= 0);
}