public async Task UpdateQuestionAsync(QuestionDto questionDto)
{
await CheckWriteAccessToQuestion(questionDto.Id);
//set the parent id
foreach (var optionDto in questionDto.Options)
{
optionDto.IdQuestion = questionDto.Id;
}
Question questionEntity = await _context.FindAsync <Question>(questionDto.Id);
//Options
IList <QuestionOption> questionOptionEntities = await _context.QuestionOptions.Where(x => x.IdQuestion == questionEntity.Id).ToListAsync();
UpdateRelation(questionDto.Options, questionOptionEntities);
//QuestionType
questionEntity.QuestionType = questionDto.Options.Count(x => x.IsTrue) == 1 ?
QuestionType.SingleChoice : QuestionType.MultipleChoice;
//Tags
IList <RelQuestionTag> relTagEntities = await _context.RelQuestionTags
.Where(x => x.IdQuestion == questionEntity.Id).ToListAsync();
relTagEntities = relTagEntities.GroupBy(x => x.IdTag).Select(x => x.First()).ToList();
IDictionary <int, int> relIdByTagId = relTagEntities.ToDictionary(x => x.IdTag, x => x.Id);
IList <RelQuestionTagDto> relQuestionTagDtos = new List <RelQuestionTagDto>();
IList <TagDto> tagDtos = questionDto.Tags.Where(x => x.IdTagType == (int)TagType.Standard)
.GroupBy(x => x.Id).Select(x => x.First()).ToList();
foreach (TagDto tagDto in tagDtos)
{
RelQuestionTagDto relQuestionTagDto = new RelQuestionTagDto();
relQuestionTagDto.IdTag = tagDto.Id;
relQuestionTagDto.IdQuestion = questionDto.Id;
if (relIdByTagId.ContainsKey(tagDto.Id))
{
relQuestionTagDto.Id = relIdByTagId[tagDto.Id];
}
relQuestionTagDtos.Add(relQuestionTagDto);
}
UpdateRelation(relQuestionTagDtos, relTagEntities);
//Image Relation
IList <RelQuestionImage> relImages = await _context.RelQuestionImages.Where(x => x.IdQuestion == questionEntity.Id).ToListAsync();
IDictionary <int, int> relIdByImageId = relImages.ToDictionary(x => x.IdImage, x => x.Id);
IList <RelQuestionImageDto> relImagesDtos = new List <RelQuestionImageDto>();
IList <int> binaryIds = questionDto.Images.Select(x => x.IdBinary).ToList();
IList <Image> images = await _context.Images.Where(x => binaryIds.Contains(x.IdBinary)).ToListAsync();
IDictionary <int, Image> imageByBinaryId = images.ToDictionary(x => x.IdBinary, x => x);
foreach (ImageDto image in questionDto.Images)
{
RelQuestionImageDto relQuestionImageDto = new RelQuestionImageDto();
relQuestionImageDto.IdQuestion = questionDto.Id;
relQuestionImageDto.IdImage = imageByBinaryId[image.IdBinary].Id;
if (relIdByImageId.ContainsKey(relQuestionImageDto.IdImage))
{
relQuestionImageDto.Id = relIdByImageId[relQuestionImageDto.IdImage];
}
relImagesDtos.Add(relQuestionImageDto);
}
UpdateRelation(relImagesDtos, relImages);
//Image Data
foreach (ImageDto imageDto in questionDto.Images)
{
Image image = imageByBinaryId[imageDto.IdBinary];
CopyData(imageDto, image);
}
CopyData(questionDto, questionEntity);
await SaveChangesAsync();
}
protected virtual void CopyData(object dto, CranEntity entity)
{
if (dto is QuestionOptionDto && entity is QuestionOption)
{
QuestionOptionDto dtoSource = (QuestionOptionDto)dto;
QuestionOption entityDestination = (QuestionOption)entity;
entityDestination.IsTrue = dtoSource.IsTrue;
entityDestination.Text = dtoSource.Text ?? string.Empty;
entityDestination.IdQuestion = dtoSource.IdQuestion;
}
else if (dto is QuestionDto && entity is Question)
{
QuestionDto dtoSource = (QuestionDto )dto;
Question entityDestination = (Question)entity;
entityDestination.Title = dtoSource.Title;
entityDestination.Text = dtoSource.Text ?? string.Empty;
entityDestination.Explanation = dtoSource.Explanation;
entityDestination.QuestionType = dtoSource.QuestionType;
entityDestination.Language = Enum.Parse <Language>(dtoSource.Language);
}
else if (dto is RelQuestionTagDto && entity is RelQuestionTag)
{
RelQuestionTagDto dtoSource = (RelQuestionTagDto)dto;
RelQuestionTag entityDestination = (RelQuestionTag)entity;
entityDestination.IdQuestion = dtoSource.IdQuestion;
entityDestination.IdTag = dtoSource.IdTag;
}
else if (dto is RelQuestionImageDto && entity is RelQuestionImage)
{
RelQuestionImageDto dtoSource = (RelQuestionImageDto)dto;
RelQuestionImage entityDestination = (RelQuestionImage)entity;
entityDestination.IdQuestion = dtoSource.IdQuestion;
entityDestination.IdImage = dtoSource.IdImage;
}
else if (dto is ImageDto && entity is Image)
{
ImageDto dtoSource = (ImageDto)dto;
Image entityDestination = (Image)entity;
entityDestination.Width = dtoSource.Width;
entityDestination.Height = dtoSource.Height;
entityDestination.Full = dtoSource.Full;
}
else if (dto is CourseDto && entity is Course)
{
CourseDto dtoSource = (CourseDto)dto;
Course entityDestination = (Course)entity;
entityDestination.Title = dtoSource.Title;
entityDestination.Language = Enum.Parse <Language>(dtoSource.Language);
entityDestination.NumQuestionsToAsk = dtoSource.NumQuestionsToAsk;
entityDestination.Description = dtoSource.Description;
}
else if (dto is RelCourseTagDto && entity is RelCourseTag)
{
RelCourseTagDto dtoSource = (RelCourseTagDto)dto;
RelCourseTag entityDestination = (RelCourseTag)entity;
entityDestination.IdCourse = dtoSource.IdCourse;
entityDestination.IdTag = dtoSource.IdTag;
}
else
{
throw new NotImplementedException();
}
}
private void CopyDataRelQuestonTag(RelQuestionTagDto dto, RelQuestionTag entity)
{
entity.IdQuestion = dto.IdQuestion;
entity.IdTag = dto.IdTag;
}
