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Dealing with message

Messages​

Automation of messages can be done easily with wechaty onMessage function. This guide will give you a step by step overview of how to respond to self messages or messages in a room.

Prerequisites​

  • Your system must have Node.js installed (version >= 16).
  • Your system must have Wechaty (version >= 0.40).
  • You need to be familiar with the basics of Wechaty platform. If not, follow our tutorials section.
  • You need to have at least a minimal application ready to work, follow one of our Example/Ding-dong-bot.

If you don't know where to start from​

See Running our first ding-dong bot.

There are various message type such as MessageType.Text, MessageType.Image, MessageType.Video, MessageType.Url, MessageType.Emotions, MessageType.Attachment. Some of the function are mentioned below and require a basic script that can help run the bot. The basic script starts by importing the code from Github/Ding-dong-bot.Integrate the below code, for this action to work.

Mention​

Use this Mention feature to send a (@ mention) to others in the room.This function works if the message received by the onMessage function belongs to a room.

import { Message } from 'wechaty'

async function onMessage(message: Message): Promise<void> {
  if (await message.mentionSelf()) {
    const room = message.room()
    if (!room) {
      throw new Error('Should never reach here: a mention message must in a room')
    }

    console.info(message.text())
    // "@bot Hello"
    console.info(await message.mentionList())
    // [bot]
    console.info(await message.mentionText())
    // "Hello"

    const talker = room.talker()
    await room.say`Thanks for mention me! ${talker}`
  }
}

bot.on('message', onMessage)

The expected output of the JavaScript code is: Message

Self message​

Use this Self message feature to reply to the bot.This function works if the message received by the onMessage function has been sent by the bot to itself.

import { Message } from 'wechaty'

async function onMessage(message: Message): Promise<void> {
  if (message.self()) {
    const talker = message.talker()
    const bot = message.wechaty.userSelf()
    assert(talker === bot, 'Message is sent from bot')
    console.info('Message is sent from bot')
  }
}

bot.on('message', onMessage)

The expected output of the JavaScript code is: Message