LEARN.md

Hello eager learner👋

Let's deep dive into KOmegle

What is Komegle?

Komegle is a free online chat website that allows you to chat with strangers. The concept is similar to Omegle.

Built with curiosity🤔 using Node.js and Socket.io

How does it work?

Eagle eye view🦅

1. UserMe hops into chat
2. He gets added into a room
3. Waits for other users to join
4. When UserYou joins, UserMe gets a notification
5. UserYou joins into UserMe's room
6. In that room they can interact with each other

Snake eye view🐍

1. UserMe hops into chat
2. He gets added to a Socket.IO room. Socket.IO room is assigned to him based on his socket ID.

In KOmege, Socket.IO room is just an array. When a room has no people, UserMe's ID is room ID and put into the array.

3. When UserYou joins, UserMe gets a notification. UserYou gets added to the same room as UserMe with the room ID of UserMe's socket ID.

4. When UserYou joins, Socket.IO emits a message to the room he's in. This way UserMe gets a notification.

5. UserMe and UserYou can interact with each other in the same room. Whenever someone sends message, it gets emitted to the room and everyone in the room gets the message.

6. When UserHe hops into chat, users.js goes through the array.

   • If an array has two elements:
     • He skips the array and searches for another array.
   • If an array has one element:
     • He adds UserHe's socket ID to the array and assigns the array as UserHe's room ID.
   • If he can't find any array with one element:
     • He creates a new array with UserHe's socket ID and assigns the array as UserHe's room ID. Thus creating new room and adding UserHe to it.

7. When someone leaves the room, Socket.IO emits a message to the room he's in. This way UserWhoever is in room gets a notification.