Check for strategy.long just opened in pine script v5

Question

In my v4 script, I use the below to mark on a graph if a buy signal was received:

if strategy.long 
        stratstring := 'Buy'

In v5 strategy.long is no longer a bool, but a strategy_direction. How do I change the if statement. I imagine something like

if strategy.long == strategy_direction.long

but that does not exist...

Basically, I want to detect if a long signal was given in the current bar.

Answer 1

You can check if you are not already in a long trade and if your long condition is true as below:

buy_now = (strategy.position_size <= 0) and your_long_condition