/// <summary>
/// 4. Display results with link to view the course
/// </summary>
/// <returns></returns>
public async Task <IActionResult> View(CancellationToken cancellationToken, CourseWorkModel model)
{
var appFlow = new AppFlowMetadata(ClientId, ClientSecret, _context);
var token = await appFlow.Flow.LoadTokenAsync(model.UserId, cancellationToken);
var credential = new UserCredential(appFlow.Flow, model.UserId, token);
try
{
// Get information using Google Classroom API
using (var classroomService = new ClassroomService(new BaseClientService.Initializer
{
HttpClientInitializer = credential,
ApplicationName = "gc2lti"
}))
{
var request = classroomService.Courses.Get(model.CourseId);
var response = await request.ExecuteAsync(cancellationToken).ConfigureAwait(false);
model.CourseAlternativeLink = response.AlternateLink;
return(View(model));
}
}
catch (Exception e)
{
return(StatusCode(StatusCodes.Status500InternalServerError, e));
}
}
/// <summary>
/// 3. Create the assignment
/// </summary>
public async Task <IActionResult> Assign(CancellationToken cancellationToken, CourseWorkModel model)
{
var appFlow = new AppFlowMetadata(ClientId, ClientSecret, _context);
var token = await appFlow.Flow.LoadTokenAsync(model.UserId, cancellationToken);
var credential = new UserCredential(appFlow.Flow, model.UserId, token);
try
{
// Create the assignment
using (var classroomService = new ClassroomService(new BaseClientService.Initializer
{
HttpClientInitializer = credential,
ApplicationName = "gc2lti"
}))
{
var nonce = CalculateNonce(8);
var linkUrl = IsRequestLocal()
? $"{_configuration["Localhost"]}/gc2lti/{nonce}?u={model.Url}&c={model.CourseId}&t={model.Title}"
: $"{_configuration["Remotehost"]}/gc2lti/{nonce}?u={model.Url}&c={model.CourseId}&t={model.Title}";
var courseWork = new CourseWork
{
Title = model.Title,
Description = model.Description,
MaxPoints = model.MaxPoints,
WorkType = "ASSIGNMENT",
Materials = new List <Material>
{
new Material
{
Link = new Link
{
Title = model.Title, // The title will be overwritten by Google's thumbnail generator
Url = linkUrl
}
}
},
State = "PUBLISHED"
};
var createRequest = classroomService.Courses.CourseWork.Create(courseWork, model.CourseId);
courseWork = await createRequest.ExecuteAsync(cancellationToken).ConfigureAwait(false);
model.CourseWorkId = courseWork.Id;
return(RedirectToAction("View", model));
}
}
catch (Exception e)
{
return(StatusCode(StatusCodes.Status500InternalServerError, e));
}
}
