protected override string GetTrueFalseLmsIdAnswer(Question question, QuizQuestionResultDTO answer)
{
Distractor distractor = question.Distractors != null
? question.Distractors.FirstOrDefault(x => x.IsActive.GetValueOrDefault())
: null;
if (distractor != null)
{
bool answ;
// TRICK: for survey using isCorrect logic is not valid
// but only surveys have 'answers' property populated
if ((answer.answers != null) && (answer.answers.Length > 0))
{
answ = answer.answers[0] == "1";
}
else
{
answ = (answer.isCorrect && distractor.IsCorrect.GetValueOrDefault()) ||
(!answer.isCorrect && !distractor.IsCorrect.GetValueOrDefault());
}
return(answ ? distractor.LmsAnswer : distractor.LmsAnswerId.ToString());
}
return(string.Empty);
}
private object[] ProcessAnswers(Question question, QuizQuestionResultDTO answer)
{
switch (question.QuestionType.Id)
{
case (int)QuestionTypeEnum.TrueFalse:
return(new[] { this.GetTrueFalseStringAnswer(question, answer) });
case (int)QuestionTypeEnum.CalculatedMultichoice:
case (int)QuestionTypeEnum.SingleMultipleChoiceText:
return(this.GetMultipleChoiceLmsAnswers(question, answer).ToArray());
case (int)QuestionTypeEnum.Matching:
var userAnswers = this.GetMatchingValues(question, answer, false);
var match = new List <JsonObject>();
foreach (var left in userAnswers.Keys)
{
var jsonObject = new JsonObject();
jsonObject.Add(left, userAnswers[left]);
match.Add(jsonObject);
}
return(match.ToArray());
default:
return(answer.answers);
}
}
/// <summary>
/// The get multiple choice answers string.
/// </summary>
/// <param name="question">
/// The question.
/// </param>
/// <param name="answer">
/// The answer.
/// </param>
/// <returns>
/// The <see cref="string"/>.
/// </returns>
protected string GetMultipleChoiceAnswersString(Question question, QuizQuestionResultDTO answer)
{
var answers = answer.answers ?? new string[0];
var boolValues =
question.Distractors.Select(q => answers.Contains(q.Id.ToString(CultureInfo.InvariantCulture)) ? "true" : "false");
return(string.Join(";", boolValues));
}
protected string GetMultipleChoiceAnswers(Question question, QuizQuestionResultDTO answer)
{
var answers = answer.answers ?? new string[] { };
var distractorIds = question.Distractors.Select((distractor, index) => answers.Contains(distractor.Id.ToString(CultureInfo.InvariantCulture)) ? index : -1).Where(x => x != -1);
//var distractorIds = question.Distractors.Select((distractor, index) => (answers.Contains(distractor.Id.ToString(CultureInfo.InvariantCulture)) && distractor.IsCorrect.HasValue && distractor.IsCorrect.Value)? index : -1 ).Where(x => x != -1);
return(string.Join(";", distractorIds));
}
/// <summary>
/// The get multiple choice lms ids.
/// </summary>
/// <param name="question">
/// The question.
/// </param>
/// <param name="answer">
/// The answer.
/// </param>
/// <returns>
/// The <see cref="IEnumerable"/>.
/// </returns>
protected IEnumerable <int> GetMultipleChoiceLmsIds(Question question, QuizQuestionResultDTO answer)
{
var answers = answer.answers ?? new string[0];
return(question.Distractors.Where(
q =>
answers.Contains(q.Id.ToString(CultureInfo.InvariantCulture)))
.Select(d => d.LmsAnswerId.GetValueOrDefault()));
}
/// <summary>
/// The get match values.
/// </summary>
/// <param name="question">
/// The question.
/// </param>
/// <param name="answer">
/// The answer.
/// </param>
/// <param name="useLmsId">
/// The use lms id.
/// </param>
/// <returns>
/// The <see cref="Dictionary"/>.
/// </returns>
protected Dictionary <string, string> GetMatchingValues(
Question question,
QuizQuestionResultDTO answer,
bool useLmsId)
{
var userAnswers = new Dictionary <string, string>();
if (answer.answers != null)
{
answer.answers.ToList().ForEach(
a =>
{
int splitInd = a.IndexOf("$$", System.StringComparison.Ordinal);
if (splitInd > -1)
{
string left = a.Substring(0, splitInd),
right = a.Substring(splitInd + 2, a.Length - splitInd - 2);
if (!userAnswers.ContainsKey(left))
{
userAnswers.Add(left, right);
}
}
});
}
if (!useLmsId)
{
return(userAnswers);
}
var ret = new Dictionary <string, string>();
foreach (var leftDistractor in question.Distractors.OrderBy(d => d.LmsAnswerId))
{
var left = leftDistractor.DistractorName.Substring(0, leftDistractor.DistractorName.IndexOf("$$", StringComparison.Ordinal));
if (userAnswers.ContainsKey(left))
{
var rightDistractor = question.Distractors.FirstOrDefault(d => d.DistractorName.EndsWith("$$" + userAnswers[left]));
if (rightDistractor != null)
{
ret.Add(leftDistractor.LmsAnswerId.ToString(), rightDistractor.LmsAnswer);
}
else
{
ret.Add(leftDistractor.LmsAnswerId.ToString(), "0");
}
}
else
{
ret.Add(leftDistractor.LmsAnswerId.ToString(), "0");
}
}
return(ret);
}
/// <summary>
/// The get true false lms id answer.
/// </summary>
/// <param name="question">
/// The question.
/// </param>
/// <param name="answer">
/// The answer.
/// </param>
/// <returns>
/// The <see cref="string"/>.
/// </returns>
protected virtual string GetTrueFalseLmsIdAnswer(Question question, QuizQuestionResultDTO answer)
{
Distractor distractor = question.Distractors?.FirstOrDefault();
if (distractor != null)
{
bool answ = (answer.isCorrect && distractor.IsCorrect.GetValueOrDefault()) ||
(!answer.isCorrect && !distractor.IsCorrect.GetValueOrDefault());
return(answ ? distractor.LmsAnswer : distractor.LmsAnswerId.ToString());
}
return(string.Empty);
}
private QuizQuestionResult ConvertDto(QuizQuestionResultDTO resultDTO, QuizResult quizResult)
{
var instance = new QuizQuestionResult
{
Question = resultDTO.question,
IsCorrect = resultDTO.isCorrect,
QuestionType = QuestionTypeModel.GetById(resultDTO.questionTypeId),
QuizResult = quizResult,
QuestionRef = QuestionModel.GetOneById(resultDTO.questionId).Value
};
return(instance);
}
private void CreateAnswers(QuizQuestionResultDTO dto, QuizQuestionResult result)
{
foreach (var answerString in dto.answers)
{
var answer = new QuizQuestionResultAnswer();
try
{
answer.QuizQuestionResult = result;
answer.Value = answerString;
switch (result.QuestionType.Id)
{
case (int)QuestionTypeEnum.SingleMultipleChoiceText:
if (int.TryParse(answerString, out var distractorId))
{
var distractor = result.QuestionRef.Distractors.FirstOrDefault(x => x.Id == distractorId);
if (distractor != null)
{
answer.QuizDistractorAnswer = distractor;
answer.Value = distractor.DistractorName;
}
else
{
answer.Value = answerString;
}
}
else
{
answer.Value = answerString;
}
break;
default:
answer.Value = answerString;
break;
}
QuizQuestionResultAnswerModel.RegisterSave(answer);
}
catch (Exception ex)
{
Logger.ErrorFormat("Saving answers:" + ex);
}
}
}
/// <summary>
/// The get true false string answer.
/// </summary>
/// <param name="question">
/// The question.
/// </param>
/// <param name="answer">
/// The answer.
/// </param>
/// <returns>
/// The <see cref="string"/>.
/// </returns>
protected string GetTrueFalseStringAnswer(Question question, QuizQuestionResultDTO answer)
{
Distractor distractor = question.Distractors?.FirstOrDefault();
if (distractor != null)
{
bool answ = (answer.isCorrect && distractor.IsCorrect.GetValueOrDefault()) ||
(!answer.isCorrect && !distractor.IsCorrect.GetValueOrDefault());
return(string.Format(
"{0}{1}",
distractor.DistractorName == null || distractor.DistractorName.Equals("truefalse") || distractor.DistractorName.Equals(string.Empty)
? string.Empty
: (distractor.DistractorName + "."),
answ ? "true" : "false"));
}
return(string.Empty);
}
public override async Task ConvertAndSendSurveyResultToLmsAsync(IEnumerable <SurveyQuestionResultDTO> results, SurveyResult surveyResult, LmsUserParameters lmsUserParameters)
{
Dictionary <int, string> answers = new Dictionary <int, string>();
foreach (var answer in results)
{
Question question = this.QuestionModel.GetOneById(answer.questionId).Value;
if (question.LmsQuestionId == null)
{
continue;
}
QuizQuestionResultDTO quizAnswer = new QuizQuestionResultDTO();
quizAnswer.isCorrect = answer.isCorrect;
quizAnswer.answers = this.ConvertSurveyAnswersToQuizAnswers(
question,
answer,
question.QuestionType.Id == (int)QuestionTypeEnum.SingleMultipleChoiceText ||
question.QuestionType.Id == (int)QuestionTypeEnum.RateScaleLikert);
var userAnswer = this.ProcessAnswers(question, quizAnswer);
var questionKey = question.LmsQuestionId.GetValueOrDefault();
if (!answers.ContainsKey(questionKey))
{
answers.Add(questionKey, userAnswer);
}
}
var questions = this.QuestionModel.GetAllBySubModuleItemId(surveyResult.Survey.SubModuleItem.Id);
var ret = new List <string>();
foreach (var question in questions)
{
ret.Add(answers.ContainsKey(question.LmsQuestionId.GetValueOrDefault()) ? answers[question.LmsQuestionId.GetValueOrDefault()] : "0");
}
await SakaiApi.SendAnswersAsync(lmsUserParameters.CompanyLms.GetLMSSettings(Settings, lmsUserParameters), surveyResult.Survey.LmsSurveyId.GetValueOrDefault().ToString(), true, ret.ToArray());
}
/// <summary>
/// The process blackboard answers.
/// </summary>
/// <param name="question">
/// The question.
/// </param>
/// <param name="answer">
/// The answer.
/// </param>
/// <returns>
/// The <see cref="string"/>.
/// </returns>
private string ProcessAnswers(Question question, QuizQuestionResultDTO answer)
{
switch (question.QuestionType.Id)
{
//case (int)QuestionTypeEnum.FillInTheBlank:
// {
// var obj = new JsonObject();
// var userAnswers = this.GetMultipleBlanksValues(question, answer);
// foreach (var key in userAnswers.Keys)
// {
// obj.Add(key, userAnswers[key]);
// }
// var answers = JsonConvert.SerializeObject(obj);
// return answers;
// }
case (int)QuestionTypeEnum.TrueFalse:
{
return(this.GetTrueFalseStringAnswer(question, answer));
}
case (int)QuestionTypeEnum.SingleMultipleChoiceText:
case (int)QuestionTypeEnum.MultipleAnswer:
{
//var isSingle = this.IsSingleAnswer(question);
//if (isSingle)
//{
// return this.GetMultipleChoiceLmsIds(question, answer).FirstOrDefault().ToString();
//}
return(this.GetMultipleChoiceAnswers(question, answer));
}
case (int)QuestionTypeEnum.RateScaleLikert:
{
return(this.GetMultipleChoiceLmsIds(question, answer).FirstOrDefault().ToString());
}
case (int)QuestionTypeEnum.Calculated:
{
return(string.Format("{0};{1}", question.Distractors.First().LmsAnswer, answer.answers.First()));
}
case (int)QuestionTypeEnum.Hotspot:
{
return(answer.isCorrect ? question.Distractors.First().LmsAnswer : "0, 0");
}
case (int)QuestionTypeEnum.MultipleDropdowns:
{
var userAnswers = this.GetMultipleDropdownValues(question, answer, true);
return(string.Join(";", userAnswers.Keys.OrderBy(k => k).Select(k => userAnswers[k])));
}
case (int)QuestionTypeEnum.Sequence:
{
var distractors = question.Distractors.OrderBy(d => d.DistractorOrder).ToList();
if (answer.isCorrect)
{
return(string.Join(";", distractors.Select(d => d.LmsAnswerId.ToString())));
}
else
{
return(string.Join(";", distractors.Select(d => (d.DistractorOrder - 1).ToString())));
}
}
case (int)QuestionTypeEnum.Matching:
{
var userAnswers = this.GetMatchingValues(question, answer, true);
return(string.Join(";", userAnswers.Keys.OrderBy(k => k).Select(k => userAnswers[k])));
}
default:
{
return(answer.answers != null
? string.Join(";", answer.answers.Select(a => a ?? string.Empty))
: string.Empty);
}
}
}
/// <summary>
/// The process blackboard answers.
/// </summary>
/// <param name="question">
/// The question.
/// </param>
/// <param name="answer">
/// The answer.
/// </param>
/// <returns>
/// The <see cref="string"/>.
/// </returns>
private string ProcessAnswers(Question question, QuizQuestionResultDTO answer)
{
switch (question.QuestionType.Id)
{
case (int)QuestionTypeEnum.TrueFalse:
{
return(this.GetTrueFalseStringAnswer(question, answer));
}
case (int)QuestionTypeEnum.SingleMultipleChoiceText:
{
var isSingle = this.IsSingleAnswer(question);
if (isSingle)
{
return(this.GetMultipleChoiceLmsIds(question, answer).FirstOrDefault().ToString());
}
return(this.GetMultipleChoiceAnswersString(question, answer));
}
case (int)QuestionTypeEnum.RateScaleLikert:
{
return(this.GetMultipleChoiceLmsIds(question, answer).FirstOrDefault().ToString());
}
case (int)QuestionTypeEnum.Calculated:
{
return(string.Format("{0};{1}", question.Distractors.First().LmsAnswer, answer.answers.First()));
}
case (int)QuestionTypeEnum.Hotspot:
{
return(answer.isCorrect ? question.Distractors.First().LmsAnswer : "0, 0");
}
case (int)QuestionTypeEnum.MultipleDropdowns:
{
var userAnswers = this.GetMultipleDropdownValues(question, answer, true);
return(string.Join(";", userAnswers.Keys.OrderBy(k => k).Select(k => userAnswers[k])));
}
case (int)QuestionTypeEnum.Sequence:
{
var distractors = question.Distractors.OrderBy(d => d.DistractorOrder).ToList();
if (answer.isCorrect)
{
return(string.Join(";", distractors.Select(d => d.LmsAnswerId.ToString())));
}
else
{
return(string.Join(";", distractors.Select(d => (d.DistractorOrder - 1).ToString())));
}
}
case (int)QuestionTypeEnum.Matching:
{
var userAnswers = this.GetMatchingValues(question, answer, true);
return(string.Join(";", userAnswers.Keys.OrderBy(k => k).Select(k => userAnswers[k])));
}
default:
{
return(answer.answers != null
? string.Join(";", answer.answers.Select(a => a ?? string.Empty))
: string.Empty);
}
}
}
public override async Task ConvertAndSendSurveyResultToLmsAsync(IEnumerable <SurveyQuestionResultDTO> results,
SurveyResult surveyResult,
LmsUserParameters lmsUserParameters)
{
var quizSubmission = await _canvasApi.CreateQuizSubmission(
lmsUserParameters.CompanyLms.LmsDomain,
lmsUserParameters.LmsUser.Token,
lmsUserParameters.Course,
surveyResult.Survey.LmsSurveyId.GetValueOrDefault()
);
foreach (var answer in results)
{
Question question = this.QuestionModel.GetOneById(answer.questionId).Value;
if (question.LmsQuestionId == null)
{
continue;
}
var quizAnswer = new QuizQuestionResultDTO();
quizAnswer.isCorrect = answer.isCorrect;
if (question.QuestionType.Id == (int)QuestionTypeEnum.SingleMultipleChoiceText)
{
quizAnswer.answers =
answer.answers.Where(a => a.surveyDistractorAnswerId != null)
.Select(a => a.surveyDistractorAnswerId.GetValueOrDefault().ToString())
.ToArray();
}
else
{
quizAnswer.answers =
answer.answers.Where(a => a.value != null)
.Select(a => a.value)
.ToArray();
}
var answers = this.ProcessAnswers(question, quizAnswer);
if (answers != null)
{
quizSubmission.quiz_questions.Add(
new CanvasQuizSubmissionQuestionDTO {
id = question.LmsQuestionId.Value, answer = answers
});
}
}
try
{
await _canvasApi.AnswerQuestionsForQuiz(
lmsUserParameters.CompanyLms.LmsDomain,
lmsUserParameters.LmsUser.Token,
quizSubmission);
}
catch (Exception ex)
{
}
finally
{
await _canvasApi.CompleteQuizSubmission(
lmsUserParameters.CompanyLms.LmsDomain,
lmsUserParameters.LmsUser.Token,
lmsUserParameters.Course,
quizSubmission);
}
}
/// <summary>
/// The process answers.
/// </summary>
/// <param name="question">
/// The question.
/// </param>
/// <param name="answer">
/// The answer.
/// </param>
/// <returns>
/// The <see cref="object"/>.
/// </returns>
private object ProcessAnswers(Question question, QuizQuestionResultDTO answer)
{
object answers;
switch (question.QuestionType.Id)
{
case (int)QuestionTypeEnum.TextNoQuestion:
return(null);
case (int)QuestionTypeEnum.TrueFalse:
answers = this.GetTrueFalseLmsIdAnswer(question, answer);
break;
case (int)QuestionTypeEnum.SingleMultipleChoiceText:
var isSingle = this.IsSingleAnswer(question);
var answerIds = this.GetMultipleChoiceLmsIds(question, answer);
if (isSingle)
{
answers = answerIds.FirstOrDefault();
}
else
{
answers = answerIds;
}
break;
case (int)QuestionTypeEnum.Matching:
{
var userAnswers = this.GetMatchingValues(question, answer, true);
var match = new List <JsonObject>();
foreach (var left in userAnswers.Keys)
{
var jsonObject = new JsonObject();
jsonObject.Add("answer_id", left);
jsonObject.Add("match_id", userAnswers[left]);
match.Add(jsonObject);
}
answers = match;
break;
}
case (int)QuestionTypeEnum.MultipleDropdowns:
{
var obj = new JsonObject();
var userAnswers = this.GetMultipleDropdownValues(question, answer, false);
foreach (var key in userAnswers.Keys)
{
obj.Add(key, userAnswers[key]);
}
answers = obj;
break;
}
case (int)QuestionTypeEnum.FillInTheBlank:
{
var obj = new JsonObject();
var userAnswers = this.GetMultipleBlanksValues(question, answer);
foreach (var key in userAnswers.Keys)
{
obj.Add(key, userAnswers[key]);
}
answers = obj;
break;
}
default:
answers = answer.answers.FirstOrDefault();
break;
}
return(answers);
}
protected Dictionary <string, string> GetMultipleBlanksValues(Question question, QuizQuestionResultDTO answer)
{
var ret = new Dictionary <string, string>();
Distractor distractor = question.Distractors?.FirstOrDefault();
if (distractor == null || distractor.LmsAnswer == null)
{
return(ret);
}
var answersDict = JsonConvert.DeserializeObject <Dictionary <string, int> >(distractor.LmsAnswer);
var xmlDoc = new XmlDocument();
xmlDoc.LoadXml(distractor.DistractorName);
foreach (var key in answersDict.Keys)
{
var order = answersDict[key];
if (answer.answers.Length > order)
{
var userText = answer.answers[order];
ret.Add(key, userText);
}
}
return(ret);
}
/// <summary>
/// The get dropdown values.
/// </summary>
/// <param name="question">
/// The question.
/// </param>
/// <param name="answer">
/// The answer.
/// </param>
/// <param name="orderAsKey">
/// The order as key.
/// </param>
/// <returns>
/// The <see cref="Dictionary"/>.
/// </returns>
protected Dictionary <string, string> GetMultipleDropdownValues(Question question, QuizQuestionResultDTO answer, bool orderAsKey)
{
var ret = new Dictionary <string, string>();
Distractor distractor = question.Distractors?.FirstOrDefault();
if (distractor == null || distractor.LmsAnswer == null)
{
return(ret);
}
var answersDict = JsonConvert.DeserializeObject <Dictionary <string, int> >(distractor.LmsAnswer);
var xmlDoc = new XmlDocument();
xmlDoc.LoadXml(distractor.DistractorName);
var textTags = xmlDoc.SelectNodes(string.Format("data//text[@isBlank='true']"));
var orderKey = 0;
foreach (var key in answersDict.Keys)
{
var order = answersDict[key];
if (answer.answers.Length > order)
{
var userText = answer.answers[order];
var textTag = textTags.Count > order ? textTags[order] : null;
if (textTag != null)
{
var id = textTag.Attributes["id"].Value;
xmlDoc.DocumentElement.SetAttribute("searchName", userText);
var optionTag =
xmlDoc.SelectSingleNode(
string.Format("data//options[@id='{0}']//option[@name=/*/@searchName]", id, userText));
if (optionTag != null && optionTag.Attributes["lmsid"] != null)
{
ret.Add(orderAsKey ? order.ToString() : key, optionTag.Attributes["lmsid"].Value);
orderKey++;
}
}
}
}
return(ret);
}
