private void DoNext()
{
CurrentQuestion++;
var page = Questions[CurrentQuestion - 1];
TransitionView.ShowPage(page);
}
private void DoPrev()
{
CurrentQuestion--;
var page = Questions[CurrentQuestion - 1];
TransitionView.ShowPage(page, false);
}
private async Task GetVoteDetails()
{
var questions = await MultiChainVm.Model.GetQuestions();
var questionVMs = questions.Select(q => new QuestionViewModel(this)
{
QuestionNumber = q.Number,
Question = q.Question,
Answers = q.Answers.Select(a => new AnswerViewModel
{
Answer = a.Answer,
Info = a.Info
}).ToList()
}).ToList();
Ui(() =>
{
Loading = false;
Questions.Clear();
Questions.AddRange(questionVMs);
TotalQuestions = questionVMs.Count;
CurrentQuestion = 1;
TransitionView.ShowPage(Questions.First());
});
}
private void ShowPage(bool forwards = true)
{
var page = Results[CurrentResults - 1];
TransitionView.ShowPage(page, forwards);
}
private async Task GetResults(BlockchainDetails blockchain)
{
// Ensure the blockchain is up to date
var progressModel = new Progress <BlockchainSyncProgress>(UpdateProgress);
await MultiChainVm.Model.WaitUntilBlockchainSynced(blockchain.Blocks, progressModel);
try
{
// Read the questions from the blockchain
_questions = await MultiChainVm.Model.GetQuestions();
var decryptKey = "";
// Blockchain encrypted, so we need the decryption key to read the results
if (blockchain.ShouldEncryptResults)
{
decryptKey = await _voteClient.GetDecryptKey(blockchain.ChainString);
}
// Get answers from blockchain
_answers =
await MultiChainVm.Model.GetResults(blockchain.WalletId, decryptKey);
// For each question, get its total for each answer
var results = _questions.Select(question =>
{
// Setup response dictionary, answer -> num votes
var options = question.Answers.ToDictionary(a => a.Answer, a => 0);
foreach (var answer in _answers)
{
foreach (var questionAnswer in answer.Answers.Where(a => a.Question == question.Number))
{
// In case we have anything unusual going on
if (!options.ContainsKey(questionAnswer.Answer))
{
Debug.WriteLine(
$"Unexpected answer for question {questionAnswer.Question}: {questionAnswer.Answer}");
continue;
}
options[questionAnswer.Answer]++;
}
}
return(new
{
question.Number,
question.Question,
Results = options
});
}).ToList();
var chartVms = results.Select(q => new ChartViewModel(q.Results)
{
Question = q.Question
}).ToList();
Ui(() =>
{
Loading = false;
Results.Clear();
Results.AddRange(chartVms);
TotalResults = chartVms.Count;
CurrentResults = 1;
TransitionView.ShowPage(Results.First());
});
}
catch (Exception e)
{
Debug.WriteLine(e);
}
}