Why is the bot not responding to mentions?

Question

In contact with

I am writing a bot on the vk-io library. The bot does not respond to mentions, that is, in a conversation, the bot responds to the "Help" command, but does not respond to "@bot Help", how to solve it?

Answer 1

Everything is simple, since the text comes with a mention for handlers - this is not universal. Solving the problem is very simple, we need to clean up the text from mentioning to using it. You can write such a middleware, it will check for a mention in the chat and remove it from the text for any other options (it will also work in the LAN). In other cases, it simply will not skip further execution.

const GROUP_ID = 123456789;

const mentionPattern = new RegExp(
    String.raw`^(?:\[club${GROUP_ID}\|[^\]]+\])(?:[\s.,\'\"!?\-+]+|$)`,
    'i'
);

vk.updates.on('message', (context, next) => {
    if (context.isChat && !mentionPattern.test(context.text)) {
        return;
    }

    if (context.text) {
        context.text = context.text.replace(mentionPattern, '');   
    }

    return next();
});

Regular expression demo

Answer 2

Most likely you are checking for an exact match to a command, and "@bot Help" !== "Help"