Convert my existing cmsSuperTrend Indicator (conding exist) from Tradingview into MQL5 for MT5

Hi developer, I need a conversion from my own cmsSuperTrend indicator from Tradingview into MQL5 for MT5. 

The coding from Tradingview is existing and will be send for the conversion. 

The challenge is not the SuperTrend caculation, that is easy and exist also for many examples in the mql5 forum. The real challenge is to develope the buy and sell labels like in Tradingview (see the picture).

I have also an exisiting coding template for the supertrend in MT5 but actually without the labels (see the attachment).