import { Composer } from "https://deno.land/x/grammy@v1.21.1/composer.ts";
Registers some middleware that will only be executed when the message contains some text. Is it possible to pass a regular expression to match:
// Match some text (exact match)
bot.hears('I love grammY', ctx => ctx.reply('And grammY loves you! <3'))
// Match a regular expression
bot.hears(/\/echo (.+)/, ctx => ctx.reply(ctx.match[1]))
Note how ctx.match
will contain the result of the regular expression.
Here it is a RegExpMatchArray
object, so ctx.match[1]
refers to the
part of the regex that was matched by (.+)
, i.e. the text that comes
after “/echo”.
You can pass an array of triggers. Your middleware will be executed if at least one of them matches.
Both text and captions of the received messages will be scanned. For example, when a photo is sent to the chat and its caption matches the trigger, your middleware will be executed.
If you only want to match text messages and not captions, you can do this:
// Only matches text messages (and channel posts) for the regex
bot.on(':text').hears(/\/echo (.+)/, ctx => { ... })
Parameters
The text to look for
The middleware to register