public async Task <ExamDTOEnvelope> Handle(Request request, CancellationToken cancellationToken)
{
var tags = await context.SaveTagsAsync(request.Exam.Tags ?? Enumerable.Empty <string>(), cancellationToken);
var exam = mapper.Map <ExamData, Domain.Exam>(request.Exam);
exam.UserId = this.currentUserAccessor.GetCurrentUserId();
var utcNow = DateTime.UtcNow;
exam.CreatedAt = utcNow;
exam.UpdatedAt = utcNow;
await this.context.Exams.AddAsync(exam, cancellationToken);
await context.ExamTags.AddRangeAsync(tags.Select(tag => new Domain.ExamTag()
{
Exam = exam,
Tag = tag
}), cancellationToken);
await context.SaveChangesAsync(cancellationToken);
var examDto = mapper.Map <Domain.Exam, ExamDTO>(exam);
return(new ExamDTOEnvelope(examDto));
}
public async Task <ExamDTOEnvelope> Handle(Request request, CancellationToken cancellationToken)
{
var userId = currentUserAccessor.GetCurrentUserId();
var examData = request.Exam;
var exam = await context.Exams.NotPublishedByIdAndUserId(request.Id, userId)
.IncludeTags()
.FirstOrDefaultAsync(cancellationToken);
if (exam == null)
{
throw new Exceptions.ExamNotFoundException();
}
exam.Title = examData.Title ?? exam.Title;
exam.Description = examData.Description ?? exam.Description;
exam.TimeInMinutes = examData.TimeInMinutes ?? exam.TimeInMinutes;
exam.PassPercentage = examData.PassPercentage ?? exam.PassPercentage;
exam.IsPrivate = examData.IsPrivate ?? exam.IsPrivate;
var examTagsToAdd = Array.Empty <Domain.ExamTag>();
var examTagsToDelete = Array.Empty <Domain.ExamTag>();
if (request.Exam.Tags != null)
{
var tags = await context.SaveTagsAsync(request.Exam.Tags ?? Enumerable.Empty <string>(), cancellationToken);
var examTags = exam.ExamTags;
examTagsToDelete = examTags.Where(et => !tags.Any(t => t.TagId == et.TagId)).ToArray();
examTagsToAdd = tags.Where(t => !examTags.Any(et => et.TagId == t.TagId))
.Select(t => new Domain.ExamTag()
{
Tag = t, TagId = t.TagId, Exam = exam, ExamId = exam.Id
}).ToArray();
}
if (context.IsModified(exam) || examTagsToAdd.Length > 0 || examTagsToDelete.Length > 0)
{
exam.UpdatedAt = DateTime.UtcNow;
}
await context.ExamTags.AddRangeAsync(examTagsToAdd, cancellationToken);
context.ExamTags.RemoveRange(examTagsToDelete);
await context.SaveChangesAsync(cancellationToken);
var examDto = mapper.Map <Domain.Exam, ExamDTO>(exam);
return(new ExamDTOEnvelope(examDto));
}
