I have not been able to find any documentation to authenticate and use the Google Chat API using a simple REST request. I have scoured the Google official documentation and it immediately states we must use Python. As far as I know REST is simply HTTP and JSON.
The official documention link refers examples to Google Drive and Google Plus (deprecated). I am not a novice at Google APIs and have successfully programmed for Drive, Sheets, Calendar and Maps. This Chat is where I am requesting help
Any help / further documentation links is all I ask !!!
I am asking for documentation/examples of REST request (with auth) and methods and parameters
I am programming in PHP.