Easy EA to close half positions and move SL

I need EA  open only one trade at time (market) and close half of positions on TP  and move the SL 

inputs in the EA :

 trade : (buy or sell) 

size : ( size of trade with micro ) 

TL : ( place it on the market)

SL: ( stay with expert and don't send it to the market)

 if price reach TP first it should close half of positions and place the SL (send it to the market) for rest of the positions

if the price reach SL first then place hedge for trades and keep the trade (for  manual  closing)

 this EA should make one trade only