public IActionResult SelectCourse(CancellationToken cancellationToken, CourseSelectionModel model)
{
var courseModel = model.Courses.SingleOrDefault(c => c.CourseId == model.CourseId);
if (courseModel == null)
{
return(RedirectToAction("SelectCourse"));
}
courseModel.PersonImage = model.PersonImage;
courseModel.PersonName = model.PersonName;
courseModel.UserId = model.UserId;
return(RedirectToAction(nameof(BulkGrade), courseModel));
}
/// <summary>
/// 1. Collect the courseId
/// </summary>
public async Task <IActionResult> Course(CancellationToken cancellationToken, CourseSelectionModel model)
{
var result = await new AuthorizationCodeMvcApp(this, new AppFlowMetadata(ClientId, ClientSecret, _context))
.AuthorizeAsync(cancellationToken)
.ConfigureAwait(false);
if (result.Credential == null)
{
return(Redirect(result.RedirectUri));
}
model.UserId = result.Credential.UserId;
try
{
using (var classroomService = new ClassroomService(new BaseClientService.Initializer
{
HttpClientInitializer = result.Credential,
ApplicationName = "gc2lti"
}))
{
if (!await SaveOfflineToken(cancellationToken, classroomService, result))
{
return(RedirectToAction("Course", model));
}
// Get the user's name
var profileRequest = classroomService.UserProfiles.Get("me");
var profile = await profileRequest.ExecuteAsync(cancellationToken).ConfigureAwait(false);
model.PersonName = profile.Name.FullName;
// Get the list of the user's courses
var coursesRequest = classroomService.Courses.List();
coursesRequest.CourseStates = CoursesResource.ListRequest.CourseStatesEnum.ACTIVE;
coursesRequest.TeacherId = "me";
ListCoursesResponse coursesResponse = null;
var courses = new List <SelectListItem>();
do
{
if (coursesResponse != null)
{
coursesRequest.PageToken = coursesResponse.NextPageToken;
}
coursesResponse =
await coursesRequest.ExecuteAsync(cancellationToken).ConfigureAwait(false);
if (coursesResponse.Courses != null)
{
courses.AddRange
(
coursesResponse.Courses.Select(c => new SelectListItem
{
Value = c.Id,
Text = c.Name
})
);
}
} while (!string.IsNullOrEmpty(coursesResponse.NextPageToken));
model.Courses = new SelectList(courses, "Value", "Text");
return(View(model));
}
}
catch (GoogleApiException e) when(e.Message.Contains("invalid authentication credentials"))
{
// Force a new UserId
TempData.Remove("user");
return(RedirectToAction("Course", model));
}
catch (TokenResponseException e) when(e.Message.Contains("invalid_grant"))
{
// Force a new UserId
TempData.Remove("user");
return(RedirectToAction("Course", model));
}
catch (Exception e)
{
return(StatusCode(StatusCodes.Status500InternalServerError, e));
}
}
