public static async Task SubmitScore(string courseId, Slide slide, string userId, int score,
ILtiRequestsRepo ltiRequestsRepo,
ILtiConsumersRepo consumersRepo)
{
var ltiRequestJson = await ltiRequestsRepo.Find(courseId, userId, slide.Id);
if (ltiRequestJson == null)
{
throw new Exception("LtiRequest for user '" + userId + "' not found");
}
var ltiRequest = JsonConvert.DeserializeObject <LtiRequest>(ltiRequestJson);
var consumerSecret = (await consumersRepo.Find(ltiRequest.ConsumerKey)).Secret;
log.Info($"Надо отправить результаты слайда {slide.Id} пользователя {userId} по LTI. Нашёл LtiRequest: {ltiRequestJson}");
UriBuilder uri;
try
{
uri = new UriBuilder(ltiRequest.LisOutcomeServiceUrl);
}
catch (Exception e)
{
log.Error(e, $"Неверный адрес отправки результатов по LTI: {ltiRequest.LisOutcomeServiceUrl}");
throw;
}
if (uri.Host == "localhost")
{
uri.Host = "192.168.33.10";
uri.Port = 80;
uri.Scheme = "http";
}
var maxScore = BaseController.GetMaxScoreForUsersSlide(slide, true, false, false);
var outputScore = score / (double)maxScore;
log.Info($"Отправляю результаты на {ltiRequest.LisOutcomeServiceUrl}: {score} из {maxScore} ({outputScore})");
/* Sometimes score is bigger then slide's MaxScore, i.e. in case of manual checking */
if (score > maxScore)
{
outputScore = 1;
}
var result = OutcomesClient.PostScore(uri.ToString(), ltiRequest.ConsumerKey, consumerSecret,
ltiRequest.LisResultSourcedId, outputScore);
if (!result.IsValid)
{
throw new Exception(uri + "\r\n\r\n" + result.Message);
}
}
public async Task ProcessResult(UserExerciseSubmission submission, RunningResults result)
{
var ltiRequestJson = await ltiRequestsRepo.Find(submission.CourseId, submission.UserId, submission.SlideId);
if (ltiRequestJson != null)
{
try
{
var exerciseSlide = (await courseManager.FindCourseAsync(submission.CourseId)).FindSlideById(submission.SlideId, true) as ExerciseSlide;
var score = await visitsRepo.GetScore(submission.CourseId, submission.SlideId, submission.UserId);
await LtiUtils.SubmitScore(exerciseSlide, submission.UserId, score, ltiRequestJson, ltiConsumersRepo);
}
catch (Exception e)
{
log.Error(e, "Мы не смогли отправить баллы на образовательную платформу");
}
}
}