Multi Tenant App in NextJS

I am creating the baseline for the Multi Tenant App in NextJs with inspiration platform starter kit from vercel.

You can also check the more details here.

The structure of the project

In this project I wanted to have the following logic and structure:

1. We will have a homepage for the app. More like a landing page
2. On the main route / we will be able to add any other url route. For now we have /other as well
3. The will be a app.youpagename.com route that will be only accessible if the user is logged in. If he is not logged in he will need to sign in our sign up to the application first and will be routed to the login page of the app
4. Inside the the auth route the user will be landing in the dashboard. In this case I build different routes in the app, listings and settings.
5. The user will need to create his profile in the settings page and would be able to add listings to his app. We should also be adding the home-guides for the user to start to share their guides with the world
6. When creating a listing the user will need to the subdomain that he wants for it as well as the description so that it builds the [domain] page

app
 ┣ [domain]
 ┃ ┣ home-guides
 ┃ ┃ ┗ page.js
 ┃ ┣ layout.js
 ┃ ┗ page.js
 ┣ app
 ┃ ┣ (auth)
 ┃ ┃ ┣ (dashboard)
 ┃ ┃ ┃ ┣ listings
 ┃ ┃ ┃ ┃ ┗ page.js
 ┃ ┃ ┃ ┣ settings
 ┃ ┃ ┃ ┃ ┗ page.js
 ┃ ┃ ┃ ┗ page.js
 ┃ ┃ ┗ login
 ┃ ┃ ┃ ┗ page.js
 ┃ ┗ layout.js
 ┣ home
 ┃ ┣ other
 ┃ ┃ ┗ page.js
 ┃ ┗ page.js
 ┣ favicon.ico
 ┣ globals.css
 ┣ layout.js
 ┗ not-found.js    

Questions for the middleware

I am was not able to solve a couple of things in the way that I put together the middleware yet:

• When I do not have the subdomain specified I shouldn't show the page to my user, I should route him to a 404. How should I do that?
• If the user tries to go the home-guides from the main page he shouldn't be able to.

Getting Started

First, run the development server:

npm run dev
# or
yarn dev
# or
pnpm dev
# or
bun dev

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