public MenuItem Move(int answerId)
{
if (IsFinished)
{
return(_currentItem);
}
if (_currentItem.Type != MenuItemType.Checkpoint)
{
// save answer to history
_history.Add(new HistoryItem(_currentItem.Id, answerId));
}
// check if menu closed
if (answerId == Constants.MenuCloseLink &&
_currentItem.Type == MenuItemType.Menu)
{
if (_previousItem == null)
{
// if previous item not found, go to start item
_currentItem = _startItem;
OnMovedToNextStep?.Invoke(this, null, _currentItem);
return(_currentItem);
}
else
{
// if previous item found, go to it
var prev = _previousItem;
_previousItem = _currentItem;
_currentItem = prev;
OnMovedToNextStep?.Invoke(this, _previousItem, _currentItem);
return(_currentItem);
}
}
// check if trying to pass checkpoint
answerId = TryPassCheckpoint(answerId);
// normal move - find next item id
int nextId = _currentItem.GetNextItemId(answerId);
if (nextId == Constants.NoLink)
{
IsFinished = true;
_previousItem = _currentItem;
_currentItem = null;
OnMovedToNextStep?.Invoke(this, _previousItem, _currentItem);
return(null);
}
// find next item
var nextItem = _items.FirstOrDefault(i => i.Id == nextId);
if (nextItem == null)
{
throw new ArgumentException($"There is no item with id {nextId} (answer id {answerId}).");
}
// save previous item
_previousItem = _currentItem;
// and change current to next
_currentItem = nextItem;
if (_currentItem.Answers.Any() == false)
{
// sequence is finished if there is no answers for current item
IsFinished = true;
}
// invoke handler if it's set
OnMovedToNextStep?.Invoke(this, _previousItem, _currentItem);
if (_currentItem.Type == MenuItemType.Checkpoint)
{
// if we reach checkpoint, call handers automatically
_currentItem = Move(0);
}
return(_currentItem);
}
public MenuItem Move(int answerId)
{
if (IsFinished)
{
return(_currentItem);
}
if (_currentItem.Type != MenuItemType.Checkpoint)
{
_history.Add(new HistoryItem(_currentItem.Id, answerId));
}
if (answerId == Constants.MenuCloseLink &&
_currentItem.Type == MenuItemType.Menu)
{
if (_previousItem == null)
{
_currentItem = _startItem;
OnMovedToNextStep?.Invoke(Client, null, _currentItem);
return(_currentItem);
}
var prev = _previousItem;
_previousItem = _currentItem;
_currentItem = prev;
OnMovedToNextStep?.Invoke(Client, _previousItem, _currentItem);
return(_currentItem);
}
answerId = TryPassCheckpoint(answerId);
var nextId = _currentItem.GetNextItemId(answerId);
if (nextId == Constants.NoLink)
{
IsFinished = true;
_previousItem = _currentItem;
_currentItem = null;
OnMovedToNextStep?.Invoke(Client, _previousItem, _currentItem);
return(null);
}
var nextItem = _items.FirstOrDefault(i => i.Id == nextId);
if (nextItem == null)
{
return(null);
}
_previousItem = _currentItem;
_currentItem = nextItem;
if (_currentItem.Answers.Any() == false)
{
IsFinished = true;
}
OnMovedToNextStep?.Invoke(Client, _previousItem, _currentItem);
AutoPassCheckpoint();
return(_currentItem);
}
public MenuItem Move(int answerId)
{
if (IsFinished)
{
return(_currentItem);
}
if (_currentItem.Type != MenuItemType.Checkpoint)
{
// save answer to history
_history.Add(new HistoryItem(_currentItem.Id, answerId));
}
// check if menu closed
if (answerId == Constants.MenuCloseLink &&
_currentItem.Type == MenuItemType.Menu)
{
if (_previousItem == null)
{
// if previous item not found, go to start item
_currentItem = _startItem;
OnMovedToNextStep?.Invoke(Client, null, _currentItem);
return(_currentItem);
}
// if previous item found, go to it
var prev = _previousItem;
_previousItem = _currentItem;
_currentItem = prev;
OnMovedToNextStep?.Invoke(Client, _previousItem, _currentItem);
return(_currentItem);
}
// check if trying to pass checkpoint
answerId = TryPassCheckpoint(answerId);
// normal move - find next item id
var nextId = _currentItem.GetNextItemId(answerId);
if (nextId == Constants.NoLink)
{
IsFinished = true;
_previousItem = _currentItem;
_currentItem = null;
OnMovedToNextStep?.Invoke(Client, _previousItem, _currentItem);
return(null);
}
// find next item
var nextItem = _items.FirstOrDefault(i => i.Id == nextId);
if (nextItem == null)
{
return(null);
}
// save previous item
_previousItem = _currentItem;
// and change current to next
_currentItem = nextItem;
if (_currentItem.Answers.Any() == false)
{
// sequence is finished if there is no answers for current item
IsFinished = true;
}
// invoke handler if it's set
OnMovedToNextStep?.Invoke(Client, _previousItem, _currentItem);
// auto pass checkpoint if necessary
AutoPassCheckpoint();
return(_currentItem);
}
