I have created a Facebook messenger bot that is working perfectly. I used php to create it.
Now, I want to add some new functionality. When the bot owner is online in Messenger and starts answering messages, the bot should stop responding to users.
How can i detect when the owner has started answering?
I did a test on this before.
You can try subscribing to "message_echo" webhook. This webhook is called when the page AND the bot sends a message to a user. So you'll need to differentiate which "message_echo" is from the page (a person) and which is from the bot. In the json that webhook sent, messages from the bot will contain an app_id key in the message object.
Your server will get a lot of hits by subscribing to this webhook.