Bot for VK JavaScript from the page?

Question

JavaScript

Good day ! Essence of the question: I am writing a bot for VK, it is necessary that it be tied to a page where you can actually go and write to it (is it possible?), now it is only integrated into the group, then, it is necessary that, upon request, it can display post statistics, and when removed from the list a smaller number of a given number (leads and creates itself, shows when accessed), it would also be nice if someone explained (or left a guess) how to make the bot, when commanded, be able to send the desired post to the user's wall, I do it with the botact library, if you know sources with such or similar information, I will be very grateful!)
PS I will be glad for absolutely any information, the names of libraries that may be related to this, etc.