Help to setup strategy - separate longs and shorts

[mediavue]

Can anyone help me setup this strategy? Buy at market price. Then if price goes up by X% sell and close. Then restart.
But if the price goes down INSTEAD by X% - then Sell a short.
IF I sell the short... then IF the price goes up x% again... Buy another long... and if price goes up even further then Close the short and at same time close the original buy.
IF the prices had gone down further instead of going up again..... then close the original buy and close short.