Handling 401 Unauthorized Error, Implement refresh token flow.

[raulshma]

Description:

When using the ThreeT frontend application built with Next.js, users may encounter an issue where they receive a 401 Unauthorized error upon accessing certain pages or performing certain actions. The frontend application uses NextAuth for authentication, middleware for routing, and a custom OIDC provider for authentication. The task is to research and resolve this issue by implementing a solution that logs out the user and redirects them to the login page when a 401 error occurs.

Task Details:

1. Issue Investigation:

   • Reproduce the issue by accessing a specific page or performing a specific action that triggers the 401 Unauthorized error.
   • Analyze the error logs and identify the root cause of the issue.

2. Solution Implementation:

   • Research and identify the appropriate mechanism for handling 401 Unauthorized errors in the Next.js application with NextAuth and middleware.
   • Implement a solution that logs out the user and redirects them to the login page when a 401 error occurs.
   • Ensure that the solution works seamlessly with the existing NextAuth and middleware configurations.
   • Consider any necessary adjustments to the OIDC provider or other authentication-related components.

3. Testing and Verification:

   • Verify that the implemented solution effectively handles 401 Unauthorized errors and redirects the user to the login page.
   • Test the solution by accessing the previously problematic pages or performing the previously problematic actions.
   • Ensure that the user is properly logged out and redirected to the login page upon encountering a 401 error.

Acceptance Criteria:

• The root cause of the 401 Unauthorized error is identified and resolved.
• A solution is implemented to log out the user and redirect them to the login page upon encountering a 401 error.
• The solution seamlessly integrates with the existing NextAuth and middleware configurations.
• The implemented solution is tested and verified to effectively handle 401 Unauthorized errors and redirect the user to the login page.
• Code follows the project structure and coding conventions.
• Documentation is updated to reflect the solution and any necessary changes.

Dependencies:

• Access to the ThreeT project repository.
• Familiarity with Next.js, NextAuth, middleware, and OIDC authentication.
• Understanding of Next.js routing and error handling.
• Knowledge of the project structure and existing authentication configurations.