public async System.Threading.Tasks.Task SaveStepDescriptionAsync(StepViewModel updatedStepViewModel)
{
int id = updatedStepViewModel.Id;
Step step = await _cacheContext.Steps.SingleAsync(s => s.Id == id);
step.Description = updatedStepViewModel.Description;
await _cacheContext.SaveChangesAsync();
}
private static StepViewModel CreateStepViewModel(Step step)
{
StepViewModel stepViewModel = new StepViewModel()
{
Id = step.Id,
Description = step.Description,
Order = step.Order,
};
return(stepViewModel);
}
/// <summary>
///
/// </summary>
/// <param name="parentTask"></param>
/// <param name="previousStep">If null, inserts the step as the first one.</param>
/// <returns></returns>
public async System.Threading.Tasks.Task <StepViewModel> CreateStepAsync(TaskViewModel parentTask, StepViewModel previousStep = null)
{
Step newStep = _cacheContext.Steps.Add(_cacheContext.Steps.Create());
newStep.Description = "New Step";
Task persistedTask = _cacheContext.Tasks.Include(t => t.Steps).Single(t => t.Id == parentTask.Id);
double previousOrder;
double nextOrder;
// If null, insert as the first one
if (previousStep == null)
{
previousOrder = 0;
nextOrder = persistedTask.Steps.FirstOrDefault()?.Order ?? 1;
}
else
{
Step persistedPreviousStep = persistedTask.Steps.SingleOrDefault(s => s.Id == previousStep.Id);
if (persistedPreviousStep == null)
{
throw new ArgumentException("Previous step is not part of the parent task.");
}
previousOrder = previousStep.Order;
nextOrder = persistedTask.Steps.OrderBy(s => s.Order).FirstOrDefault(s => s.Order > previousOrder)?.Order ?? 1;
}
newStep.Order = (previousOrder + nextOrder) / 2;
persistedTask.Steps.Add(newStep);
await _cacheContext.SaveChangesAsync();
StepViewModel stepViewModel = CreateStepViewModel(newStep);
parentTask.Steps.Add(stepViewModel);
return(stepViewModel);
}