/// <summary>
/// Call this method to save the last completed test to the database using a
/// unique test id.
/// </summary>
/// <param name="testId"></param>
/// <returns></returns>
public string PersistTestData(string testId)
{
try
{
/*
* The number has been validated, now we can use it. Don't worry about it being
* null. If it is I want an exception to be thrown so there are clues to the user
* as to why the test was not saved to the database.
*/
_testToSave.TestId = testId;
// passsed verification, so save to db.
var recordsSaved = TorqueTestDb.SaveToDatabase(_testToSave);
if (recordsSaved > 0)
{
// add to completed tests, the view model will grab it next time it updates.
CompletedTests.Add(_testToSave);
// there is no longer a test that needs to be saved, so set to null.
_testToSave = null;
return(Messages.DatabaseSaveSuccessful());
}
return(Messages.DatabaseSaveUnsuccessful());
}
catch (Exception ex)
{
Debug.WriteLine(Messages.GeneralExceptionMessage(ex, "SaveTestToDatabase"));
return(ex.Message);
}
}
/// <summary>
/// Verifies that the test id has not already been used, is not null,
/// and is not an empty value. If the number is verified, this call
/// will also save the _testToSave, and indicate that in the response
/// to the caller.
/// </summary>
/// <param name="testId">
/// The testId the user is trying to assign to the test that just completed.
/// </param>
/// <returns>
/// If the testId is null, whitespace, or a duplicate testId, an error
/// will be returned to the user. If no error is detected, null will be
/// returned
/// </returns>
public static string VerifyTestId(string testId)
{
try
{
// verification of number provided
if (string.IsNullOrWhiteSpace(testId))
{
return(Messages.BlankTorqueTestId());
}
if (TorqueTestDb.InvalidTestId(testId))
{
return(Messages.DuplicateTestId(testId));
}
return(null);
}
catch (Exception)
{
throw;
}
}