/// <inheritdoc />
/// <summary>
/// Adds a gradebook column to a course.
/// </summary>
/// <returns>The line item corresponding to the new gradebook column.</returns>
protected override async Task <ActionResult <LineItem> > OnAddLineItemAsync(AddLineItemRequest request)
{
if (!int.TryParse(request.ContextId, out var contextId))
{
var name = $"{nameof(request)}.{nameof(request.ContextId)}";
ModelState.AddModelError(name, $"The {name} field cannot be converted into a course id.");
return(BadRequest(new ValidationProblemDetails(ModelState)));
}
if (!await _courseValidator.UserHasAccess(contextId))
{
return(Unauthorized(new ProblemDetails
{
Title = "Not authorized",
Detail = "User not authorized to access the requested course."
}));
}
var course = await _context.GetCourseAsync(contextId);
if (course == null)
{
return(NotFound(new ProblemDetails
{
Title = ReasonPhrases.GetReasonPhrase(StatusCodes.Status404NotFound),
Detail = "Course not found"
}));
}
// Add a gradebook column to the course
var gradebookColumn = new GradebookColumn
{
EndDateTime = request.LineItem.EndDateTime,
Label = request.LineItem.Label,
ScoreMaximum = request.LineItem.ScoreMaximum,
StartDateTime = request.LineItem.StartDateTime,
Tag = request.LineItem.Tag
};
if (request.LineItem.ResourceLinkId.IsPresent())
{
if (!int.TryParse(request.LineItem.ResourceLinkId, out var resourceLinkId))
{
var name = $"{nameof(request)}.{nameof(request.LineItem.ResourceLinkId)}";
ModelState.AddModelError(name, $"The {name} field cannot be converted into a resource link id.");
return(BadRequest(new ValidationProblemDetails(ModelState)));
}
var resourceLink = await _context.GetResourceLinkAsync(resourceLinkId);
if (resourceLink == null)
{
var name = $"{nameof(request)}.{nameof(request.LineItem)}.{request.LineItem.ResourceLinkId}";
ModelState.AddModelError(name, $"The {name} field is not a valid resource link id.");
return(BadRequest(new ValidationProblemDetails(ModelState)));
}
gradebookColumn.ResourceLink = resourceLink;
}
course.GradebookColumns.Add(gradebookColumn);
await _context.SaveChangesAsync();
request.LineItem.Id = Url.Link(LtiAdvantage.Constants.ServiceEndpoints.Ags.LineItemService,
new { contextId = request.ContextId, lineItemId = gradebookColumn.Id });
return(Created(request.LineItem.Id, request.LineItem));
}
protected override Task <ActionResult <LineItem> > OnAddLineItemAsync(AddLineItemRequest request)
{
var result = (ActionResult <LineItem>) new ObjectResult(request.LineItem);
return(Task.FromResult(result));
}
