public Error?Validate(TagCloudInstruction instruction, TagCloudAnswer answer)
{
if (!answer.Tags.Any())
{
return(PollError.AnswerValidationFailed("The answer does not contain any tags"));
}
if (answer.Tags.Count > instruction.MaxTags)
{
return(PollError.AnswerValidationFailed(
$"Too many tags submitted (count: {answer.Tags.Count}, max: {instruction.MaxTags})"));
}
var groups =
TagCloudGrouper.GroupAnswers(instruction.Mode, answer.Tags.Select(x => new TagCloudTag("1", x)));
if (groups.Any(x => x.Count > 1))
{
var duplicateTags = groups.Where(x => x.Count > 1).ToList();
return(PollError.AnswerValidationFailed(
$"The answer does contain {duplicateTags.Sum(x => x.Count)} duplicate tags. The following tags are an equal group: {string.Join(", ", duplicateTags.Select(x => "(" + string.Join(", ", x.Select(t => t.Tag)) + ")"))}."));
}
return(null);
}
public ValueTask <PollResults> Aggregate(TagCloudInstruction instruction,
IReadOnlyDictionary <string, TagCloudAnswer> answers)
{
var submittedTags = answers.SelectMany(x => x.Value.Tags.Select(tag => new TagCloudTag(x.Key, tag)))
.ToList();
var groups = TagCloudGrouper.GroupAnswers(instruction.Mode, submittedTags);
return(new ValueTask <PollResults>(new TagCloudPollResults(groups.ToDictionary(
tagGroup => GetGroupTagName(tagGroup.Select(x => x.Tag)),
tagGroup => (IReadOnlyList <string>)tagGroup.Select(x => x.SubmittedBy).ToList()))));
}
