public QuestionViewModel(
Question question,
IValidator<Question> questionValidator,
IValidator<Answer> answerValidator,
IValidator<AssociatedSubject> subjectValidator,
ISubjectQuery subjectQuery,
Guid busId
)
: base()
{
_busId = busId;
_question = question;
_questionValidator = questionValidator;
_answerValidator = answerValidator;
_subjectValidator = subjectValidator;
_subjectQuery = subjectQuery;
InitializeCommands();
InitializeAnswers();
}
public void DeleteQuestionChoice(Action action, Question question, Choice choice)
{
ThrowBusinessRuleViolation(question);
question.DeleteChoice(action, choice);
}
public NewAnswer(Question question)
{
_question = question;
}
public Question CreateQuestion(string text, bool isActive)
{
var question = new Question(text, isActive);
Questions.Add(question);
return question;
}
public void DeleteQuestion(Question question, Action action)
{
ThrowBusinessRuleViolation(question);
action();
}
public RemoveAnswer(Question question, Answer answer)
{
_question = question;
_answer = answer;
}
private void ThrowBusinessRuleViolation(Question question)
{
if (question.IsBeingUsedInTestInstance)
throw new BusinessRuleException("Unable to update question because is it being used in the Test Instance");
else if (question.IsBeingUsedInTestTemplate)
throw new BusinessRuleException("Unable to update question because is it being used in the Test Template");
}
public void DeleteQuestion(Question question, Action action)
{
QuestionBank.DeleteQuestion(question, action);
}
public void DeleteQuestionChoice(Action action, Question question, Choice choice)
{
QuestionBank.DeleteQuestionChoice(action, question, choice);
}
public async Task <QuestionDto> Handle(CreateQuestionsCommand request, CancellationToken cancellationToken)
{
var quiz = await _context.Quizzes
.Where(x => x.Id == request.QuizId)
.FirstOrDefaultAsync();
if (quiz == null)
{
throw new RestException(HttpStatusCode.NotFound, "Quiz Not Found");
}
await using var transaction = await _context.Database.BeginTransactionAsync();
var inputType = await _context.InputTypes
.Where(x => x.Id == request.InputTypeId)
.FirstOrDefaultAsync();
if (inputType == null)
{
await transaction.RollbackAsync();
throw new RestException(HttpStatusCode.NotFound, "Input Type Not Found");
}
var question = new Domain.Question
{
Title = request.Title,
Required = request.Required,
MultipleOptions = request.MultipleOptions,
Quiz = quiz,
InputType = inputType
};
await _context.Questions.AddAsync(question);
if (await _context.SaveChangesAsync() < 1)
{
await transaction.RollbackAsync();
throw new RestException(HttpStatusCode.BadRequest, "Error savig questions changes");
}
if (request.MultipleOptions && request.Options != null)
{
foreach (var option in request.Options)
{
var op = new Option
{
Description = option,
Question = question
};
await _context.Options.AddAsync(op);
}
if (await _context.SaveChangesAsync() < 1)
{
await transaction.RollbackAsync();
throw new RestException(HttpStatusCode.BadRequest, "Error savig option changes");
}
}
var document = new Document();
if (request.File != null)
{
document = await _uploadFiles.UploadDocuments(request.File);
document.Question = question;
await _context.Documents.AddAsync(document);
if (await _context.SaveChangesAsync() < 1)
{
await transaction.RollbackAsync();
throw new RestException(HttpStatusCode.BadRequest, "Error savig document changes");
}
}
await transaction.CommitAsync();
// var mapper = _customMapper.GetMapper();
// var questionDto = mapper.Map<QuestionDto>(question);
var documentUrl = new Document();
if (request.File != null)
{
documentUrl = await _documentsUrl.GetDocumentUrl(document, "Questions");
}
var options = await _context.Options
.Where(x => x.Question == question)
.Select(x => new OptionDto
{
Description = x.Description,
QuestionId = question.Id
})
.ToListAsync();
return(new QuestionDto
{
Title = question.Title,
Required = question.Required,
Document = documentUrl,
InputType = inputType,
MultipleOptions = question.MultipleOptions,
Options = options,
QuizId = request.QuizId
});
}
private void deleteQuestion(Question question)
{
deleteAllQuestionChoice(question.Choices.ToList());
_context.Questions.Remove(question);
}
private void RaiseQuestionRemoved(Question question)
{
var handler = QuestionRemovedEvent;
if (handler != null)
handler(this, new QuestionEventArgs(question));
}
public QuestionEventArgs(Question question)
{
_question = question;
}
public long GetRecountFor(Guid questionId, Guid choiceId)
{
Question question = null;
var urns = new List <Guid>();
var recounts = new List <Recount>();
foreach (var block in trunk)
{
if (question == null)
{
foreach (var i in block.Questions)
{
if (i.Id == questionId)
{
question = i;
break;
}
}
}
if (question != null)
{
foreach (var urn in block.Urns)
{
if (urn.QuestionId == questionId)
{
urns.Add(urn.Id);
}
}
foreach (var recount in block.Recounts)
{
if (urns.Contains(recount.UrnId))
{
recounts.Add(recount);
}
}
}
}
var recountByUrn = recounts.GroupBy(r => r.UrnId);
long total = 0;
foreach (var group in recountByUrn)
{
var results = group.SelectMany(g => g.Results).Where(r => r.ChoiceId == choiceId).ToArray();
var votes = results[0].Votes;
foreach (var result in results)
{
if (result.Votes != votes)
{
votes = 0;
break;
}
}
total += votes;
}
return(total);
}