/// <inheritdoc />
/// <summary>
/// Returns a gradebook column from a course.
/// </summary>
/// <returns>The line item corresponding to the gradebook column.</returns>
protected override async Task <ActionResult <LineItem> > OnGetLineItemAsync(GetLineItemRequest 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.");
}
if (!int.TryParse(request.LineItemId, out var lineItemId))
{
var name = $"{nameof(request)}.{nameof(request.LineItemId)}";
ModelState.AddModelError(name, $"The {name} field cannot be converted into a gradebook column id.");
}
if (!ModelState.IsValid)
{
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"
}));
}
var gradebookColumn = course.GradebookColumns.SingleOrDefault(c => c.Id == lineItemId);
if (gradebookColumn == null)
{
return(NotFound(new ProblemDetails
{
Title = ReasonPhrases.GetReasonPhrase(StatusCodes.Status404NotFound),
Detail = "Gradebook column not found"
}));
}
return(new LineItem
{
Id = Request.GetDisplayUrl(),
EndDateTime = gradebookColumn.EndDateTime,
Label = gradebookColumn.Label,
ResourceId = gradebookColumn.ResourceId,
ResourceLinkId = gradebookColumn.ResourceLink.Id.ToString(),
ScoreMaximum = gradebookColumn.ScoreMaximum,
StartDateTime = gradebookColumn.StartDateTime,
Tag = gradebookColumn.Tag
});
}
protected override Task <ActionResult <LineItem> > OnGetLineItemAsync(GetLineItemRequest request)
{
var result = (ActionResult <LineItem>) new ObjectResult(new LineItem());
return(Task.FromResult(result));
}