/// <summary>
/// Amends the last material batch transaction.
/// </summary>
/// <param name="batchId">The ID of the batch.</param>
/// <param name="transactionId">The ID of the transaction.</param>
/// <param name="quantity">The quantity to set.</param>
/// <param name="userId">The ID of the user attempting to amend the transaction.</param>
/// <exception cref="OpenMTS.Services.Exceptions.NotLastLogEntryException">Thrown if the passed transaction ID doesn't match the last transaction of this batch.</exception>
/// <exception cref="UnauthorizedAccessException">Thrown if the last transaction was performed by a different user.</exception>
public void AmendLastMaterialBatchTransaction(Guid batchId, Guid transactionId, double quantity, string userId)
{
MaterialBatch batch = GetBatchOrThrowNotFoundException(batchId);
// Get and validate last transaction
Transaction transaction = TransactionLogService.GetLastTransactionLogEntry(batchId);
if (transaction.Id != transactionId)
{
throw new NotLastLogEntryException(transactionId);
}
// Validate user
if (transaction.UserId != userId)
{
throw new UnauthorizedAccessException("The last transaction was performed by a different user.");
}
// Calculate new quantity differential
quantity = RoundMaterialQuantity(quantity);
double newBatchQuantity = batch.Quantity - transaction.Quantity + quantity;
// Attempt to amend last transaction
TransactionLogService.AmendLastTransactionLogEntry(batchId, transactionId, quantity);
// No exception thrown - update material batch
batch.Quantity = newBatchQuantity;
MaterialBatchRepository.UpdateMaterialBatch(batch);
}
/// <summary>
/// Gets the last material batch transaction.
/// </summary>
/// <param name="batchId">The ID of the batch to get the last transaction for.</param>
/// <exception cref="MaterialBatchNotFoundException">Thrown if the batch could be found.</exception>
/// <returns>Returns the trnasaction</returns>
public Transaction GetLastMaterialBatchTransaction(Guid batchId)
{
GetBatchOrThrowNotFoundException(batchId);
return(TransactionLogService.GetLastTransactionLogEntry(batchId));
}