feat: integrate better-auth for OIDC authentication on Cloudflare Workers#6
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feat: integrate better-auth for OIDC authentication on Cloudflare Workers#6
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…kers Add better-auth (v1.5.6) to protect the admin API with session-based authentication backed by Cloudflare D1 via the Kysely adapter. - Mount /api/auth/* handler (sign-in, callback, sign-out, session) - Guard GET /api/freshman with session validation (Bearer Token + Cookie) - POST /api/freshman remains public for open recruitment form submissions - Add genericOAuth plugin wired to Logto as the OIDC provider (PKCE) - Add bearer plugin to support Authorization header token flow - Enable nodejs_compat compatibility flag required by better-auth - Add LOGTO_ISSUER / LOGTO_CALLBACK_URL env vars to wrangler.jsonc - Extend Env interface with BETTER_AUTH_SECRET, LOGTO_* secrets - Add D1 migration SQL for better-auth tables (user/session/account/verification)
Deploying with
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| Status | Name | Latest Commit | Preview URL | Updated (UTC) |
|---|---|---|---|---|
| ✅ Deployment successful! View logs |
active | 476a068 | Commit Preview URL Branch Preview URL |
Mar 27 2026, 03:30 PM |
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Closes #5
Summary
/api/auth/*for full OIDC flow with Logto as the identity provider (PKCE)GET /api/freshmanwith session/Bearer-token validation — returns401for unauthenticated requestsPOST /api/freshmanremains public for the open recruitment formmigrations/0001_better_auth.sql) addsuser,session,account,verificationtables alongside the existingfreshmantablenodejs_compatWrangler flag required by better-auth's async-hooks dependencyChanged Files
src/auth.tscreateAuth(env)factory using Kysely adapter +bearer+genericOAuthpluginssrc/index.tsGET /api/freshmanworker-configuration.d.tsEnvwithBETTER_AUTH_SECRET,LOGTO_*varswrangler.jsoncnodejs_compatflag +LOGTO_ISSUER/LOGTO_CALLBACK_URLvarsmigrations/0001_better_auth.sqlpackage.jsonbetter-auth+@better-auth/kysely-adapterDeployment Checklist
BETTER_AUTH_SECRET,LOGTO_CLIENT_ID,LOGTO_CLIENT_SECRETLOGTO_ISSUERandLOGTO_CALLBACK_URLinwrangler.jsonchttps://<worker>.dev/api/auth/callback/logtowrangler d1 execute active --file=./migrations/0001_better_auth.sqlTest Plan
GET /api/auth/sign-in/social?provider=logto&callbackURL=/redirects to Logto loginGET /api/freshmanwithout token →401 UnauthorizedGET /api/freshmanwithAuthorization: Bearer <token>→ data returnedPOST /api/freshmanwithout token → accepted (public endpoint)