/// <summary>
/// Validates an assignment swap view model
/// </summary>
/// <param name="swapModel">The swap model to validate</param>
public static void ValidateAssignmentSwapVM(AddAssignmentGroupSwapViewModel swapModel)
{
// Validating base validity
APIValidation.Validate(swapModel);
// Assignment group IDs cannot be the same
if (swapModel.SwapAssignmentGroupID == swapModel.BaseAssignmentGroupID)
{
throw new CoursesAPIException(ErrorCodes.IDENTICAL_GROUP_IDS);
}
}
public void AddAssignmentSwap()
{
// Arrange:
AddAssignmentGroupSwapViewModel swapModel = new AddAssignmentGroupSwapViewModel
{
BaseAssignmentGroupID = 1,
SwapAssignmentGroupID = 3
};
// Act:
AssignmentGroupSwapDTO swapDTO = _service.AddAssignmentGroupSwap(swapModel);
// Assert:
Assert.AreEqual("Generic Group 1", swapDTO.FirstAssignmentGroup.Name);
Assert.AreEqual("Generic Group 3", swapDTO.SecondAssignmentGroup.Name);
}
/// <summary>
/// Ties two assignment groups together
/// In the event a student receives a worse grade in the group
/// with the higher weight, the weights are switched around
/// </summary>
/// <param name="swapModel"></param>
/// <returns></returns>
public AssignmentGroupSwapDTO AddAssignmentGroupSwap(AddAssignmentGroupSwapViewModel swapModel)
{
// Validating the view model
AssignmentValidation.ValidateAssignmentSwapVM(swapModel);
var allAssGroups = _assignmentGroupSwaps.All();
var result = allAssGroups.FirstOrDefault(a => (a.BaseAssignmentGroupID == swapModel.BaseAssignmentGroupID &&
a.TargetAssignmentGroupID == swapModel.SwapAssignmentGroupID) ||
(a.BaseAssignmentGroupID == swapModel.SwapAssignmentGroupID &&
a.TargetAssignmentGroupID == swapModel.BaseAssignmentGroupID));
// If the relation already exists, throw error
if (result != null)
{
throw new ArgumentException(ErrorCodes.GROUP_SWAP_ALREADY_EXISTS);
}
// New swap entry
AssignmentGroupSwap newSwap = new AssignmentGroupSwap
{
BaseAssignmentGroupID = swapModel.BaseAssignmentGroupID,
TargetAssignmentGroupID = swapModel.SwapAssignmentGroupID
};
_assignmentGroupSwaps.Add(newSwap);
_uow.Save();
// Returning new assignment group DTO
return(new AssignmentGroupSwapDTO
{
FirstAssignmentGroup = GetAssignmentGroup(swapModel.BaseAssignmentGroupID),
SecondAssignmentGroup = GetAssignmentGroup(swapModel.SwapAssignmentGroupID)
});
}
public AssignmentGroupSwapDTO AddAssignmentGroupSwap(AddAssignmentGroupSwapViewModel swapModel)
{
return(_assignmentService.AddAssignmentGroupSwap(swapModel));
}
