async Task InitExamPartsAsync(Exam exam, ExamSettingsViewModel examSettingsView, IEnumerable <SubjectQuestionsViewModel> subjectQuestionsList)
{
List <int> recruitQuestionIds = new List <int>();
if (exam.ExamType == ExamType.Recruit)
{
//只要歷屆試題
recruitQuestionIds = _questionsService.FetchAllRecruitQuestionIds().ToList();
}
var pickedQids = new List <int>();
foreach (var examPartSettings in examSettingsView.Parts)
{
// 依照設定, 隨機出題
var examPart = new ExamPart
{
Points = examPartSettings.Points,
MultiAnswers = examPartSettings.MultiAnswers,
Order = examPartSettings.Order,
OptionCount = examPartSettings.OptionCount,
Title = examPartSettings.Title
};
var qids = examPartSettings.PickQuestionIds(subjectQuestionsList, pickedQids, recruitQuestionIds);
pickedQids.AddRange(qids);
var questions = (await _questionsService.FetchByIdsAsync(qids)).ToList();
examPart.LoadExamQuestions(questions);
exam.Parts.Add(examPart);
}
//測試是否全為歷屆試題
if (recruitQuestionIds.HasItems())
{
var examQids = exam.QuestionIds;
var notIn = examQids.Where(x => !recruitQuestionIds.Contains(x));
if (notIn.HasItems())
{
throw new ExamNotRecruitQuestionSelected();
}
}
}
async Task <ExamPart> InitExamPartAsync(RecruitViewModel recruitView)
{
var examPart = new ExamPart
{
Points = recruitView.Points,
MultiAnswers = recruitView.MultiAnswers,
Order = recruitView.Order,
OptionCount = recruitView.OptionCount,
Title = recruitView.Title
};
var questions = (await _questionsService.FetchByIdsAsync(recruitView.QuestionIds)).ToList();
examPart.LoadExamQuestions(questions);
return(examPart);
}