public async Task <ActionResult> Exercise(int chapter, int exercise)
{
var exerciseDetails = await rep.GetExerciseAsync(chapter, exercise);
if (exerciseDetails == null)
{
throw new HttpException(404, "Not found");
}
ViewBag.ActiveTheme = await userServices.GetCodeMirrorThemeAsync();
return(View(exerciseDetails));
}
public async Task RunAssessmentsForExercise(ApplicationUser user, string code, int chapter, int exercise)
{
var output = new StringBuilder();
Exercise exerciseDetails;
string userCode;
var result = false;
if (!user.ExercisePermitted(chapter, exercise))
{
WriteToConsole("You do not have permission to do this exercise\r\n");
return;
}
if ((exerciseDetails = await rep.GetExerciseAsync(chapter, exercise)) == null)
{
WriteToConsole("Invalid exercise details\r\n");
return;
}
if (!code.StartsWith(exerciseDetails.HiddenCodeHeader))
{
WriteToConsole("Something went wrong with the pre-prepared code header");
throw new InvalidOperationException("Start of user's code does not match the hidden code header");
}
userCode = code.Substring(exerciseDetails.HiddenCodeHeader.Length + 1);
try
{
var assessmentGroups = await rep.GetAssessmentGroupsForExerciseAsync(chapter, exercise);
var assessmentRunner = new AssessmentRunner(codeRunner, code);
assessmentRunner.ConsoleWrite += OnConsoleWrite;
result = await assessmentRunner.RunAssessmentsAsync(assessmentGroups);
assessmentRunner.ConsoleWrite -= OnConsoleWrite;
}
finally
{
var savedAssessment = new Submission
{
UserId = user.Id,
ChapterNo = chapter,
ExerciseNo = exercise,
SubmittedCode = userCode,
Output = output.ToString(),
Success = result,
SubmissionDateTime = DateTimeOffset.UtcNow
};
await rep.InsertSubmissionAsync(savedAssessment);
}
void WriteToConsole(string message)
{
OnConsoleWrite(this, new ConsoleWriteEventArgs(message));
}
void OnConsoleWrite(object sender, ConsoleWriteEventArgs e)
{
output.Append(e.Message);
ConsoleWrite?.Invoke(sender, e);
}
}
