Build me a library

API to do the communication from Whatsapp Web session to another application, in both ways, with browser in headless mode. Capabilities necessary from whatsapp web session: - Save the QR Code in jpeg and send it through rest Call - Save cookies session, so there is no need to login everytime with QR Code - Read recent messages (and store it in an object) - Get unread messages (and store it in an object) - Send text messages by contact number or group id - Support emojis, images and videos - Get statistics from Whatsapp Business menu (sent messages, read messages, etc.) - Get List of Contacts (and store it in an object) - Get List of Groups (and store it in an object) - Get information about Groups (and store it in an object) - Get various events. For example: Leaving, Joining, Missed Call etc. Requirements - The browser should be running in headless mode, so it can be executed in a container (Docker, preferably) - Readme with main functionalities - I will want the source code, so we can fix if the html elements from [login to view URL] is renamed Desirable - The memory consumption from the complete application with browser in headless mode be less than 120 MB - The docker container from application - Must be developed in node.js, java or javascript References: To not start from scratch: - [login to view URL] - [login to view URL]