This project is a bot designed to send WhatsApp messages using the WhatsApp Typescript/Javascript Web API through Baileys. The bot achieves this functionality by running as a scheduled task on AWS Lambda. The WhatsApp credentials are securely stored in DynamoDB, ensuring that it is not necessary to log in every time the lambda is executed. To manage the infrastructure in AWS, the Serverless Framework is utilized.
The bot searches a finance API for the USD to COP conversion value and sends it in a message via WhatsApp. This iteration of the previous Rust project reduces memory usage and enables it to run in the cloud, specifically in a free tier 128MB Lambda, without Selenium dependency.
Baileys does not require Selenium or any other browser to be interface with WhatsApp Web, it does so directly using a * WebSocket*. Not running Selenium or Chromimum saves you like half a gig of ram :/
Baileys supports interacting with the multi-device & web versions of WhatsApp.
Thank you to @pokearaujo for writing his observations on the workings of WhatsApp Multi-Device. Also, thank you to @Sigalor for writing his observations on the workings of WhatsApp Web and thanks to @Rhymen for the _ go_ implementation.
Baileys is type-safe, extensible and simple to use. If you require more functionality than provided, it's super easy to write an extension.
If you're interested in building a WhatsApp bot, you may wanna check out WhatsAppInfoBot and an actual bot built with it, Messcat.
Read the docs here Join the Discord here
To deploy the project:
- Set up your AWS credentials
aws configure(this must have access to Lambda and DynamoDB) - Install the dependencies running
yarn - Create a
.envfile in the root of the project like:EXTERNAL_AUTH_ENABLED=true GROUP_NAME=your-group-name USE_STORE=false DYNAMODB_TABLE=whats-app-bot-table CREDS_ID=creds-id
- Deploy the project
serverless deploy --verbose
If while deploying you have an error like:
Cannot read file node_modules\dayjs\esm\locale\sk.js due to: EMFILE: too many open files, open '...\Baileys\.build\node_modules\dayjs\esm\locale\sk.js'
then add require('../../graceful-fs/graceful-fs').gracefulify(require('fs')); below 'use strict'; in the
file node_modules/serverless/bin/serverless.js to solve it.
This project was not carried out for commercial purposes and is in no way affiliated with WhatsApp. Use at your own discretion. Do not spam people with this.