public async Task <IActionResult> PostAnswer(string progressId, int lessonId, int stepId, [FromBody] Answer answer)
{
if (answer == null)
{
return(BadRequest("answer is null"));
}
var courseProgress = await progressRepository.GetAsync(progressId);
if (courseProgress == null)
{
return(NotFound($"Invalid progressId = {progressId}"));
}
var userId = courseProgress.UserId;
if (!IdIsValid(userId))
{
return(Forbid($"The user with id = {userId} has no rights"));
}
var course = await courseRepository.GetAsync(courseProgress.CourceId);
var question = course.GetQuestion(lessonId, stepId, answer.QuestionId);
if (question == null)
{
return(NotFound($"Invalid combination of lessonId = {lessonId}, stepId = {stepId}, questionId = {answer.QuestionId} doesn't exist"));
}
var questionState = courseProgress
.LessonProgresses[lessonId]
.StepProgresses[stepId]
.QuestionStates[answer.QuestionId];
var result = questionState.Update(question, answer.SelectedAnswers);
if (question.TotalAttemptsCount < result.CurrentAttemptsCount)
{
return(InvalidOperation("No available attempts"));
}
courseProgress.Update(lessonId, stepId, answer.QuestionId, result);
await progressRepository.ReplaceAsync(courseProgress.Id, courseProgress);
return(Ok(result));
}
