Auth0 Integration

[mahid797]

We need to integrate Auth0’s Universal Login into our Next.js + NextAuth application, while retaining the existing Credentials-based flow as a fallback. Only one authentication method should be active at a time, determined by an environment variable (AUTH_METHOD). This allows for a flexible setup that can be switched between a fully self-hosted credentials approach or Auth0-based authentication without extensive code rewrites.

---

Overview

• Add Auth0 as a NextAuth provider, using Universal Login (redirect flow).
• Make Credentials the default or alternate provider, switchable via AUTH_METHOD.
• Ensure user data is still stored (or synced) in Supabase so we can manage roles, collaboration features, and possibly row-level security (RLS) in the future.
• Preserve (or gracefully disable) our custom login/sign-up forms when AUTH_METHOD=auth0.

Note:
These issues cover both server-side and client-side tasks regarding Auth0. Future enhancements, like advanced RLS or social logins, will be documented in subsequent issues.

---

Sub-Issues

1. Server-Side Integration with Auth0 #229
2. Client-Side Updates for Universal Login #230

---

💡 Important: Please read the Development Guidelines before starting work on these issues

Bluewave Datahall Development Guide

References

• Supabase Docs:
  • Row Level Security (RLS)
• Auth0 Docs:
  • Universal Login
  • Next.js Quickstart

📄 Note:
Please read both sub-issues (Server Side and Client Side) before beginning development to understand the overall scope and ensure consistency across the entire auth flow.