//get and remove the top item and set the top item to the poinetered item of the removed one
public async Task <StackItem> Pop()
{
var stackItem = await _context.StackItems.FirstOrDefaultAsync(item => item.IsTop == true);
if (stackItem == null)
{
return(null);
}
string newTopId = null;
StackItem newTopItem = null;
if (stackItem.BeforeItemId != null)
{
newTopId = stackItem.BeforeItemId;
newTopItem = await _context.StackItems.FirstOrDefaultAsync(item => item.Id == newTopId);
newTopItem.AfterItemId = null;
}
else if (stackItem.AfterItemId != null)
{
newTopId = stackItem.AfterItemId;
newTopItem = await _context.StackItems.FirstOrDefaultAsync(item => item.Id == newTopId);
newTopItem.BeforeItemId = null;
}
if (newTopItem != null)
{
newTopItem.IsTop = true;
}
_context.StackItems.Remove(stackItem);
await _context.SaveChangesAsync();
return(stackItem);
}
public async Task CreateRequestForCommandAsync <T>(Guid id)
{
var exists = await ExistAsync(id);
var request = exists ?
throw new DomainException($"Request with {id} already exists") :
new ClientRequest()
{
Id = id,
Name = typeof(T).Name,
Time = DateTime.UtcNow
};
_context.Add(request);
await _context.SaveChangesAsync();
}