Integrate Latex keywords autocomplete functionality in ace editor

[yadu...@gmail.com]

I need to build an online latex editor something like https://overleaf.com. I used ace editor. I choosed editing mode as latex and it is working fine as im able to write the latex syntax. But nothing is auto suggesting. For example : If i type \documentclass i need some suggestions related to the same keyword. It is working fine with php and javascript modes. How can i achieve this.