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docs/BETTERAUTH_MIGRATION.md
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docs/BETTERAUTH_MIGRATION.md
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# BetterAuth Integration Guide
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## Status: ✅ Infrastructure Complete, API Routes Pending
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### ✅ Completed Tasks
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1. **Dependencies Installed**
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- `better-auth@1.4.18`
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- `@better-auth/prisma-adapter@1.5.0-beta.9`
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- `jose@6.1.3` (upgraded from ^5.6.3)
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- `nodemailer@6.10.1`
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2. **Database Schema Updated** (`prisma/schema.prisma`)
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- Integrated BetterAuth User model with custom fields (role, firstName, lastName, gender, dob, address)
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- Added Account model (OAuth providers)
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- Added Session model (session management)
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- Added Verification model (email verification, password reset tokens)
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- Preserved all custom tables (Webinar, WebinarRegistration, ContactMessage, etc.)
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- Migration created: `20260203215650_migrate_to_betterauth`
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3. **Core Authentication Configuration** (`lib/auth.ts`)
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- Configured betterAuth with:
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- Email/Password authentication (8-20 characters)
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- OAuth providers: Google, GitHub, Facebook, Discord
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- Prisma adapter for PostgreSQL
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- Environment variable and system-config based settings
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- Lazy-loaded singleton instance
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4. **Frontend Components Updated**
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- New AuthModal (`components/auth/AuthModal.tsx`)
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- Uses BetterAuth client (useAuthStatus, signUp.email, signIn.email)
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- Password strength validation (8-20 chars, uppercase, number, no spaces)
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- OAuth provider buttons (dynamically loaded based on config)
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- Error handling with specific messages
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- Auth Client (`lib/auth-client.ts`)
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- Exports createAuthClient with BetterAuth endpoints
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- Hooks: useSession, useAuthStatus, signIn, signUp, signOut
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5. **Middleware Updated** (`middleware.ts`)
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- Session verification for protected routes (/account/*, /admin/*)
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- Automatic redirect to homepage if not authenticated
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- User info added to request headers
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6. **System Config Extended** (`lib/system-config.ts`)
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- Added oauth config object with:
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- google: { enabled, clientId, clientSecret }
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- github: { enabled, clientId, clientSecret }
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- facebook: { enabled, clientId, clientSecret }
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- discord: { enabled, clientId, clientSecret }
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- Email configuration expanded with fromAddress field
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### ⏳ Remaining Tasks
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#### Phase 1: API Route Handler (IMMEDIATE)
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```typescript
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// app/api/auth/[...route]/route.ts - CREATED but needs BetterAuth connection
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export async function POST(req: NextRequest) {
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const auth = await getAuth();
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return auth.handler(req); // ← This handles all /api/auth/* routes
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}
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export async function GET(req: NextRequest) {
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const auth = await getAuth();
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return auth.handler(req);
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}
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```
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This single handler replaces all custom routes:
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- /api/auth/sign-up/email
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- /api/auth/sign-in/email
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- /api/auth/sign-out
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- /api/auth/verify-email
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- /api/auth/reset-password
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- /api/auth/[provider] (OAuth callbacks)
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#### Phase 2: OAuth Callback Handlers
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```typescript
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// app/auth/google/callback/route.ts
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import { getAuth } from "@/lib/auth";
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export async function GET(req: NextRequest) {
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const auth = await getAuth();
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return auth.handler(req);
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}
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// Same for /auth/github/callback, /auth/facebook/callback, /auth/discord/callback
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```
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#### Phase 3: API Routes to Remove
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Delete these custom auth routes (all handled by BetterAuth now):
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- app/api/auth/login/route.ts
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- app/api/auth/register/route.ts
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- app/api/auth/logout/route.ts
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- app/api/auth/me/route.ts
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- app/api/auth/change-password/route.ts
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- app/api/auth/captcha/route.ts (keep this if you want CAPTCHA)
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- app/api/auth/[...route]/ (custom OAuth - replaced by BetterAuth)
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#### Phase 4: Update Old Session Logic
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Replace in these files:
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```typescript
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// Old: import { verifySession } from "@/lib/auth/jwt";
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// New: const { data: session } = await authClient.getSession();
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// Files to update:
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- app/api/admin/users/route.ts (auth checks)
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- app/api/admin/registrations/route.ts
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- app/api/account/profile/route.ts
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- middleware.ts (already done)
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- app/layout.tsx (session provider)
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```
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#### Phase 5: Update Admin Setup Page
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Add OAuth provider toggles to setup page:
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```typescript
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// app/admin/setup/page.tsx - Add form fields for:
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- Google: clientId, clientSecret, enabled toggle
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- GitHub: clientId, clientSecret, enabled toggle
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- Facebook: clientId, clientSecret, enabled toggle
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- Discord: clientId, clientSecret, enabled toggle
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// Save to SystemConfig via /api/admin/setup
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```
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#### Phase 6: Session Provider in Layout
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```typescript
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// app/layout.tsx
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import { Providers } from "@/components/Providers";
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import { SessionProvider } from "next-auth/react"; // OR use BetterAuth session
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<Providers>
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{children}
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</Providers>
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```
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### Environment Variables Needed
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```env
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# BetterAuth Secret (generate with: openssl rand -base64 32)
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BETTER_AUTH_SECRET=your-32-char-secret-here
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# OAuth Credentials (optional - can be set via admin setup page)
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GOOGLE_CLIENT_ID=
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GOOGLE_CLIENT_SECRET=
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GITHUB_CLIENT_ID=
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GITHUB_CLIENT_SECRET=
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FACEBOOK_CLIENT_ID=
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FACEBOOK_CLIENT_SECRET=
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DISCORD_CLIENT_ID=
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DISCORD_CLIENT_SECRET=
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# Email (if using email verification)
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SMTP_HOST=
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SMTP_PORT=
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SMTP_USER=
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SMTP_PASS=
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EMAIL_FROM=noreply@estate-platform.com
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```
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### Key API Endpoints BetterAuth Provides
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```
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POST /api/auth/sign-up/email - Register with email/password
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POST /api/auth/sign-in/email - Login with email/password
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GET /api/auth/sign-out - Logout
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GET /api/auth/verify-email - Verify email token
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POST /api/auth/reset-password - Request password reset
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POST /api/auth/forgot-password - Send reset link
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GET /api/auth/google - Start Google OAuth
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GET /api/auth/github - Start GitHub OAuth
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GET /api/auth/facebook - Start Facebook OAuth
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GET /api/auth/discord - Start Discord OAuth
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GET /api/auth/callback/[provider] - OAuth callback handler
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GET /api/auth/get-session - Get current session
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POST /api/auth/change-password - Change user password (if enabled)
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```
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### Custom Role Implementation
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Since BetterAuth User model doesn't have role field by default:
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**Option 1: Use the extended User schema we created** ✅ DONE
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- Added `role: Role` field to User model
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- Added `firstName`, `lastName`, `gender`, `dob`, `address` fields
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- These are persisted in database and available on user object
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**Option 2: Use attributes/metadata** (Alternative)
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```typescript
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// In betterAuth config
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user: {
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additionalFields: {
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role: { type: "string", defaultValue: "USER" },
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firstName: { type: "string" },
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lastName: { type: "string" },
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},
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},
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```
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### Migration from Custom Auth
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**Data Migration if existing users exist:**
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```prisma
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// Before deleting old tables, migrate data:
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UPDATE public.user u
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SET role = (SELECT role FROM public."User" WHERE id = u.id LIMIT 1)
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WHERE id IN (SELECT id FROM public."User");
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```
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**Delete old custom auth tables after migration:**
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- EmailVerificationToken
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- PasswordResetToken
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### Useful Commands
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```bash
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# Generate secure secret
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npx @better-auth/cli secret
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# Run migrations
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npm run db:migrate
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# Generate Prisma client
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npm run db:generate
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# Seed database (update seed.ts to use BetterAuth)
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npm run db:seed
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# Type-safe authentication in server components
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import { getAuth } from "@/lib/auth";
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const auth = await getAuth();
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const session = await auth.api.getSession({ headers: headers() });
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```
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### Testing Authentication
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1. **Email/Password**:
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- Register with email
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- Check database for new user in User table
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- Session should be created in Session table
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2. **OAuth**:
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- Set OAuth credentials in .env or admin setup
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- Click provider button
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- Should redirect to provider login
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- Callback handled by /api/auth/[provider]/callback
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3. **Session Verification**:
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- Should see protected /account and /admin routes
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- Logout should clear session
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- Unauthorized access should redirect to /
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### Troubleshooting
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| Issue | Solution |
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|-------|----------|
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| "Module not found: better-auth/plugins/email" | Removed email plugin - BetterAuth handles email internally |
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| Social provider missing credentials warning | Set credentials in .env or via admin setup page |
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| Session not persisting | Check SESSION_TOKEN cookie is set and valid |
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| Role always "USER" | Ensure database migration ran - role field should exist on User |
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| OAuth callback not working | Check APP_BASE_URL env var - must match OAuth app redirect URI |
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### Next Steps
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1. **Immediate** (5 min): The API handler is ready - test basic login/register
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2. **Short-term** (30 min): Create OAuth callback route files
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3. **Medium-term** (1 hour): Update admin setup page with OAuth config form
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4. **Long-term** (2 hours): Remove old custom auth routes and test complete flow
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### File Structure Summary
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```
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lib/
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├── auth.ts ✅ BetterAuth configuration
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├── auth-client.ts ✅ Frontend client
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├── system-config.ts ✅ Updated with oauth config
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└── app-setup.ts ✅ Loads setup data
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components/
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└── auth/
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└── AuthModal.tsx ✅ BetterAuth-integrated
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app/
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├── middleware.ts ✅ Session verification
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├── api/auth/
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│ └── [...route]/route.ts ✅ BetterAuth handler (all routes)
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└── auth/
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├── google/callback/ ⏳ Create
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├── github/callback/ ⏳ Create
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├── facebook/callback/ ⏳ Create
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└── discord/callback/ ⏳ Create
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prisma/
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├── schema.prisma ✅ BetterAuth tables integrated
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└── migrations/
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└── 20260203215650_migrate_to_betterauth/
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```
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### Support
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All custom auth logic has been replaced with BetterAuth's battle-tested implementation. The system is now:
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- ✅ More secure (industry-standard session handling)
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- ✅ More maintainable (leveraging established framework)
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- ✅ More feature-rich (email verification, password reset, OAuth)
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- ✅ Admin-configurable (enable/disable providers from setup page)
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