Stock chart pattern finder with Javascript (Node)

I am building a little stock trader program, that try's to find patterns in (many) forex charts.

As I get along, its getting better and better, but its hard!!!

Does anyone have some advice/ideas? Can be a website with algorithms or an example in another language.. Or an e-book.

As far as I am now, it knows how to find (long) downers and uppers, recognises 'waves' pretty well and all auto trading is working full automatically

Thanks in advance!!