private bool ValidateCreateCourseRequest(SaveOrUpdateCourseRequest request)
{
if (request == null)
{
return(false);
}
if (string.IsNullOrWhiteSpace(request.Overview))
{
return(false);
}
if (request.Edition <= 0 || request.Level <= 0 || request.AvgLearningTime <= 0)
{
return(false);
}
if (request.InstructorId == null)
{
return(false);
}
if (string.IsNullOrWhiteSpace(request.Name))
{
return(false);
}
return(true);
}
private bool ValidateUpdateCourseRequest(SaveOrUpdateCourseRequest request)
{
var isValidContent = ValidateCreateCourseRequest(request);
var isValidKey = !(request.Id == Guid.Empty);
return(isValidContent && isValidKey);
}
public ServiceResult <CourseServiceResultCode> UpdateCourse(SaveOrUpdateCourseRequest request)
{
var isValidRequest = ValidateUpdateCourseRequest(request);
if (!isValidRequest)
{
return(ArgumentErrorResult(CourseServiceResultCode.ArgumentError));
}
try
{
var course = _courseRepo.Get(request.Id);
if (course == null)
{
return(DataErrorResult(CourseServiceResultCode.DataNotExist));
}
UpdateDataOfCourse(course, request);
_courseRepo.Update(course);
_courseRepo.SaveChanges();
return(BuildResult(true, CourseServiceResultCode.Success, resultObj: course));
}
catch (Exception ex)
{
_systemErrorsRepo.AddLog(ex);
return(InternalErrorResult(CourseServiceResultCode.BackendException));
}
}
private void UpdateDataOfCourse(Course course, SaveOrUpdateCourseRequest request)
{
course.InstructorId = request.InstructorId;
course.Level = request.Level;
course.Overview = request.Overview;
course.Name = request.Name;
course.AvgLearningTime = request.AvgLearningTime;
course.CourseCategory = ClassifyCourseCategory(request.Categories, course);
}
private Course MakeNewCourse(SaveOrUpdateCourseRequest request)
{
var course = new Course()
{
Id = Guid.NewGuid(),
Name = request.Name,
Overview = request.Overview,
InstructorId = request.InstructorId,
Edition = request.Edition,
Level = request.Level,
AvgLearningTime = request.AvgLearningTime
};
var courseCategories = ClassifyCourseCategory(request.Categories, course);
course.CourseCategory = courseCategories;
return(course);
}
public ServiceResult <CourseServiceResultCode> CreateCourse(SaveOrUpdateCourseRequest request)
{
var isValidRequest = ValidateCreateCourseRequest(request);
if (!isValidRequest)
{
return(ArgumentErrorResult(CourseServiceResultCode.ArgumentError));
}
try
{
var course = MakeNewCourse(request);
_courseRepo.Add(course);
_courseRepo.SaveChanges();
return(BuildResult(true, CourseServiceResultCode.Success));
}
catch (Exception ex)
{
_systemErrorsRepo.AddLog(ex);
return(InternalErrorResult(CourseServiceResultCode.BackendException));
}
}
public IActionResult CreateNewCourse(SaveOrUpdateCourseRequest request) => GetResult(() => _courseService.CreateCourse(request));
