public DetailedStudyMaterialDTO(StudyMaterialDTO baseDTO)
{
Uri = baseDTO.Uri;
Name = baseDTO.Name;
StudyMaterialId = baseDTO.StudyMaterialId;
CategoryId = baseDTO.CategoryId;
UploadDate = baseDTO.UploadDate;
StudentId = baseDTO.StudentId;
TotalRating = baseDTO.TotalRating;
Deleted = baseDTO.Deleted;
}
/// <summary>
/// Saves list of study materials in specified category within specific course, relating those study materials with
/// specific student.
/// </summary>
/// <param name="categoryId">Unique identifier for the category</param>
/// <param name="studentId">Unique identifier for the student</param>
/// <param name="fileInfos">List of file information</param>
/// <returns>True if upload succeeds, false if not</returns>
public async Task <ResultMessage <bool> > SaveStudyMaterials(int categoryId, int studentId, List <BasicFileInfo> fileInfos)
{
try
{
using (IDbContextTransaction transaction = await _context.Database.BeginTransactionAsync())
{
foreach (BasicFileInfo fileInfo in fileInfos)
{
ResultMessage <CategoryDTO> choosenCategory = await _categoryService
.GetSingleOrDefault(x => x.CategoryId == categoryId);
if (!choosenCategory.IsSuccess)
{
return(new ResultMessage <bool>(false, choosenCategory.Status, choosenCategory.Message));
}
StudyMaterialDTO data = new StudyMaterialDTO()
{
StudentId = studentId,
CategoryId = categoryId,
Name = fileInfo.FileName,
UploadDate = DateTime.Now,
Uri = PathBuilder.BuildPathForStudyMaterial(choosenCategory.Result.CourseId, categoryId, fileInfo.FileName)
};
ResultMessage <StudyMaterialDTO> studyMaterialResult = await _studyMaterialService.Add(data);
if (!studyMaterialResult.IsSuccess)
{
return(new ResultMessage <bool>(false, studyMaterialResult.Status, studyMaterialResult.Message));
}
ResultMessage <bool> fsUploadResult = await _documentService.UploadDocumentToStorage(data.Uri, fileInfo.FileData);
if (!fsUploadResult.IsSuccess)
{
return(new ResultMessage <bool>(false, fsUploadResult.Status, fsUploadResult.Message));
}
}
transaction.Commit();
}
return(new ResultMessage <bool>(OperationStatus.Success));
}
catch (DbUpdateException ex)
{
return(new ResultMessage <bool>(false, _errorHandler.Handle(ex)));
}
}
