Feature request: message middleware

[indexzero]

Really enjoying using this thus far. Thanks for all your hard work! 💯 👍

I've been working on a simple command that turned out to be a bit more complex than I thought. At its core this command is a Dead Man's Switch (aka a time-delayed auto-responder) which means that after it's setup I need to add a receive middleware. In doing so I realized how much overhead each receive middleware is since it gets everything.

Wondering if there is any interest in expanding on the middleware concept and adding support for middlewares on types of messages: direct_message, direct_mention, mention and ambient.

The proposed API would be very similar:

controller.middleware.direct_message.use(fn);
controller.middleware.direct_mention.use(fn);
controller.middleware.mention.use(fn);
controller.middleware.ambient.use(fn);

[anonrig]

Why add it on a middleware, when you have the old fashioned .on('EVENT_TYPE', fn) 🎱

[anonrig]

But again you can do the same thing with .hears method with giving an appropriate RegEx. So, I'm not really quite sure why Botkit needs a middleware? Can you be more specific. Thanks!

[peterswimm]

Closed due to inactivity, would love to see more discussion or review any pull requests!