ma=Average[30](close)

avg2period =Average[2](ma)

avgprior3 = (ma[3]+ma[4]+ma[5])/3

buycond = maofma>avgprior3 

If buycond and (your conds) then 
buy 1 contract at market
endif

Something like that? Not tested.

You could just use- if ma[1]>ma[2]. This would be the simplest

You could also experiment with Heikin ashi, macd and use of multi time frame. These might help you filter.

Oops my bad. Meant  to be –

buycond= Avg2period>avgprior3

Trend is pretty impossible to define. A trend in a 1 minute chart might be the opposite of a trend in a 5 minute chart which might be the opposite of a 1 hour chart which disagrees with a 4 hour chart which is opposite of a daily chart which goes the opposite direction to a weekly chart which disagrees with a monthly chart.

Try to work out all these trends with a lagging moving average and you get lots of lagging opinions of direction of trend based on something that happened a while back – so isn’t actually current trend.

Trying to define trend to use as a filter to avoid trades is a very difficult thing to do because one man’s monthly trend is the opposite to another man’s hourly trend and by the time you have decided it is a trend it is most likely reversing direction.

I’m a great believer in Charles Dow’s idea of Primary, Secondary and Minor trends. Your execution is usually on the minor trend, as that is where the action is. The Primary and Secondary trends would be defined in relation to that. So if you were working on a daily chart, you might be looking at Monthly and Weekly  for your primary and secondary trends.

At the 5m level as your minor trend, I find that a Secondary trend at 15m and Primary at 2h often works well. For scalping it might be 1m, 5m, 15m. It all depends on how long a game you want to play.

There are lots of ways to identify trends at different TFs – Wilder’s Smoothing MA, SuperTrend, SAR etc etc. You have to play around and see what works best.