/// <summary>
/// Uploads the survey asynchronously.
/// </summary>
/// <param name="response">The survey response.</param>
/// <returns>A task to await the completion of the upload.</returns>
public static async Task UploadAsync(this UploadedItem <SurveyResponseModel> response)
{
try
{
DependencyService.Get <IMetricsManagerService>().TrackEvent("UploadSurveyResponse");
await SurveyCloudService.SubmitSurveyResponseAsync(response.Item);
response.Uploaded = DateTime.Now;
await response.SaveAsync();
}
catch (Exception ex)
{
DependencyService.Get <IMetricsManagerService>().TrackException("UploadSurveyResponseFailed", ex);
throw;
}
}
public Task SaveAsync()
{
UpdateLastLocation();
return(_response.SaveAsync());
}
private async void NextQuestion()
{
// Add empty answers if necessary
var questionResponse = _response.Item.QuestionResponses.FirstOrDefault(r => r.QuestionID == CurrentQuestion?.QuestionID);
if (questionResponse == null)
{
_response.Item.QuestionResponses.Add(new SurveyQuestionResponseModel
{
QuestionID = CurrentQuestion.QuestionID,
});
}
// Check if we should prompt in case the user did not fill out the additional information field
var shouldPrompt = false;
var questionAnswers = CurrentQuestion.AnswerChoices.ToDictionary(a => a.AnswerChoiceID, a => a);
foreach (var answer in CurrentAnswers)
{
if (string.IsNullOrEmpty(answer.AdditionalAnswerData))
{
SurveyQuestionAnswerChoiceModel questionAnswer;
if (questionAnswers.TryGetValue(answer.AnswerChoiceID, out questionAnswer) && questionAnswer.AdditionalAnswerDataFormat != AnswerFormat.None)
{
shouldPrompt = true;
break;
}
}
}
// Prompt the user if any additional information entries are empty
if (shouldPrompt)
{
var shouldContinue = await App.DisplayAlertAsync(
"Incomplete Answer",
"At least one answer requires more information, are you sure you want to continue?",
"Yes",
"No");
if (!shouldContinue)
{
return;
}
}
var properties = new Dictionary <string, string>
{
{ "CurrentQuestionID", CurrentQuestion?.QuestionID.ToString() },
};
DependencyService.Get <IMetricsManagerService>().TrackEvent("SurveyNextQuestion", properties, null);
// Save the response
await _response.SaveAsync();
// Create a lookup table for all the currently selected answers
var currentAnswerIds = new HashSet <int>(CurrentAnswers.Select(a => a.AnswerChoiceID));
// Get a reference to any matching question answer model from the survey question
var matchingAnswer = CurrentQuestion.AnswerChoices.FirstOrDefault(a => currentAnswerIds.Contains(a.AnswerChoiceID));
// Set the next question to the next question identifier from the question answer model if available;
// otherwise, set the next question to the next highest question number
var nextQuestionIndex = QuestionIndex(matchingAnswer?.NextQuestionID) ?? NextQuestion(CurrentQuestion.QuestionNum);
_index = nextQuestionIndex ?? _index + 1;
// End the survey if the matching question answer disqualifies the survey, or if there are no more questions
if ((matchingAnswer?.EndSurvey ?? false) || nextQuestionIndex == null)
{
EndSurvey();
}
UpdateCommands();
QuestionChanged?.Invoke(this, new EventArgs());
}