Supabase and NextJS 14: Auth and Server Actions

Step-by-Step Tutorial:

1. Setting up Supabase:

   • Create a project in Supabase by logging in or signing up.
   • Generate a password for your database.
   • Save the database password in a password manager.
   • Hit create a new project and wait until the setup is complete.
   • Access the dashboard and create tables for your database.

2. Setting up Authentication Providers:

   • Go to Authentication and enable the desired providers like email, Google, Discord, or GitHub.
   • Customize settings like confirm email for email signups.
   • Access API docs in Supabase for detailed information.

3. Implementing Authentication in NextJS:

   • Download the necessary files for setting up Supabase in your application.
   • Create utility functions for client-side and server-side actions.
   • Set up middleware handling for authentication on every page request.

4. Adding User Authentication in the Application:

   • Implement functions for email sign up and login using Supabase.
   • Add buttons for signing in with different providers like GitHub, Google, etc.
   • Implement user sessions and redirects based on authentication status.

5. Handling CRUD Operations:

   • Create functions for adding, updating, and deleting todos in the database.
   • Link up forms and buttons with server actions for performing CRUD operations.
   • Use form status to show loading states when submitting forms.

6. Implementing Optimistic UI Updates:

   • Set up a reducer function to handle optimistic updates for todos.
   • Use the useOptimistic hook to update the UI optimistically before the server response.
   • Implement optimistic updates for adding, updating, and deleting todos.

7. Optimistic Checkbox Updates:

   • Use form actions and state management to handle checkbox updates optimistically.
   • Implement a form action to update the checkbox value optimistically.
   • Test the functionality to ensure immediate UI updates for checkbox changes.

8. Final Touches and Testing:

   • Test the application to ensure all CRUD operations and optimistic updates work as expected.
   • Make any necessary adjustments based on user feedback or testing results.
   • Optimize the application for performance and user experience.

By following these steps, you can successfully implement Supabase authentication, CRUD operations, and optimistic UI updates in your NextJS application. Feel free to explore further customization and enhancements based on your project requirements.