public async Task MarkSetSlotCompletionStatus(int setId, SlotType slot, bool completed)
{
var set = tmogContext.Sets.Find(setId);
if (set == null)
{
throw new ArgumentException("Invalid set", nameof(setId));
}
SlotManager slotMan = new SlotManager(set.Slots);
slotMan.Mark(slot, completed);
set.Slots = slotMan.ToString();
await tmogContext.SaveChangesAsync();
}
