This is a Next.js project bootstrapped with create-next-app.

This project aims to show a real-time chat app. I have chosen Pusher as the platform to enable the real-time chat.

First, run the development server:

npm run dev
# or
yarn dev

Open http:https://localhost:3000 with your browser to see the result.

Pusher requires the following environment variables to run.

These can be obtained from pusher by creating a new App under Channels

• PUSHER_APP_ID: Pusher app_id value
• NEXT_PUBLIC_PUSHER_KEY: Pusher key value
• PUSHER_SECRET: Pusher secret value
• NEXT_PUBLIC_PUSHER_CLUSTER: Pusher cluster value

The main API route is at /api/chat

This API gets the new message in the body and then

1. Sends message on Pusher channel
2. Saves message in data store

The body has format:

{
    "channel": "my-channel",
    "username": "username",
    "message": "my message"
}

This API returns the list of available channels

The response is in the format

{
    "channels": [ "channel1", "channel2"]
}

This API returns the history of the requested channel;

Each item in the response has:

• timestamp: Time the the message was sent
• username: User who sent the message
• message: Message content

Example response

{
    "history": [
        {
            "timestamp": "2021-02-16T04:20:09.751Z",
            "username": "user",
            "message": "my message"
        }
    ]
}

The app is deployed to the Vercel Platform.

The app URL is: https://chat-app-three-lake.vercel.app/