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Random Chat App

I’m building random chat app. When somebody presses a certain button, they are taken to a chat room where I want them to join another person who pressed the same button. It’s like Omegle, except for chat rooms.

Here’s what it looks like from a database standpoint:
I’ve got chat data…

And I’ve also got message data…

I didn’t think I’d need anything more since I’m not saving any data. Once somebody leaves the chat room, it’s over.
Right now I’m encountering a problem workflow wise. I have this for when a person presses the button to join a chat room:
After pressing the button, workflow step 1 is…

Workflow step 2 is…

What would be the next step? So far we’ve created a new chat and we’ve navigated them to the chat room page (a page with a chat box). How do I ensure they’ve found a room with a random person who also clicked the button? Also, when one person leaves, how do I ensure both parties are sent back to the home screen?

Thank you for your help, I’m open to any 1 on 1’s as well.

I think your first step should be to add the user to an available chat room.

If there is no available chat room then create a room and notify the user to wait.

How do I know if a chat room is available or not? Are you saying I should change the first part of my workflow?

The chat room is available if there is only one member in the room.

You can Do a search for any chat that the count of all users is 1 to find the available chat room

I mean like as my first step I’d look for rooms with one person. I’m not sure how I’d go about doing this?