trails/openspec/changes/unify-auth-completion/tasks.md
Ullrich Schäfer b9aac2859a
Drop auth.server.ts re-exports + rename to .server.ts convention (task 5.2)
Two cleanups in one pass:

1. Update import paths app-wide from `~/lib/auth.server` to
   `~/lib/auth/session.server` for the four session helpers
   (sessionStorage, createSession, getSessionUser, destroySession).
   ~40 files: 33 simple path swaps where the file imported only session
   symbols, 5 splits where it also imported per-method auth functions
   (auth.verify.tsx, api.settings.email.ts, activities.\$id.tsx,
   routes.\$id.tsx, auth.accept-terms.tsx) — those keep one import
   from auth.server (for verifyMagicToken, canView, recordTermsAcceptance,
   etc.) and gain a second import from auth/session.server.
   Two more files used relative paths and were missed by the first
   grep pass (lib/oauth.server.ts and routes/oauth.authorize.tsx) —
   migrated too.
   The @deprecated re-exports block in auth.server.ts is gone.

2. Rename the new auth files to follow the project's `.server.ts`
   convention so Vite/React Router treat them as server-only (they
   read process.env.SESSION_SECRET, hit the DB, etc. — must NOT enter
   the client bundle):
   - auth/session.ts → auth/session.server.ts
   - auth/completion.ts → auth/completion.server.ts
   - auth/completion.test.ts → auth/completion.server.test.ts
   Done with `git mv` so blame is preserved.

Verified: typecheck + lint green; 126 unit tests pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-08 03:01:30 +02:00

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Markdown

## 1. New auth module structure
- [x] 1.1 Create `apps/journal/app/lib/auth/` directory.
- [x] 1.2 Create `apps/journal/app/lib/auth/session.ts` and move `sessionStorage`, `createSession`, `getSessionUser`, `destroySession` from `auth.server.ts` (preserve behaviour, including `process.env.SESSION_SECRET` source).
- [x] 1.3 In `auth.server.ts`, re-export the moved helpers from `./auth/session.ts` so existing imports keep working unchanged. Add a JSDoc `@deprecated`-style comment pointing at the new path.
## 2. completeAuth chokepoint
- [x] 2.1 Write `apps/journal/app/lib/auth/completion.test.ts` (TDD red): scenarios for returnTo defaults to `/`, returnTo `//evil.com` rejected, returnTo `https://evil.com` rejected, response is a 302/303 redirect, response includes Set-Cookie naming `__session`.
- [x] 2.2 Create `apps/journal/app/lib/auth/completion.ts` exporting `completeAuth({ userId, request, returnTo? }) → Promise<Response>` and a private `safeReturnTo(value)` helper. Implementation: `createSession(userId, request)`; `redirect(safeReturnTo(returnTo) ?? "/", { headers: { "Set-Cookie": cookie } })`. Terms recording is **not** here — both registration paths already record terms at user creation, so the chokepoint is purely session + redirect.
- [x] 2.3 Run completion tests green.
## 3. Caller migration
- [x] 3.1 `apps/journal/app/routes/api.auth.register.ts` passkey-finish branch — replace inlined session+redirect with `return completeAuth({ userId, request, returnTo })`. Drop now-unused imports.
- [x] 3.2 `apps/journal/app/routes/api.auth.login.ts` passkey `step: "finish-passkey"` branch — replace with `return completeAuth({ userId, request, returnTo })`.
- [x] 3.3 `apps/journal/app/routes/api.auth.login.ts` magic-link `step: "verify-code"` branch — replace with `return completeAuth(...)`.
- [x] 3.4 `apps/journal/app/routes/auth.verify.tsx` magic-link click-through consumer — replace with `return completeAuth(...)`.
- [x] 3.5 Confirm no other callers of `createSession` remain inside auth route handlers (they should all flow through `completeAuth`). `getSessionUser` and `destroySession` continue to be called directly from non-completion sites — that's expected.
## 4. Verification
- [x] 4.1 `pnpm typecheck && pnpm lint && pnpm test` green.
- [x] 4.2 `pnpm test:e2e` (auth flows) green without modification — proves behaviour-preserving refactor.
- [x] 4.3 Manual sanity: register with passkey locally, login with passkey, log out, re-login via magic-link 6-digit code, click-through magic link from `auth.verify.tsx`. Confirm session cookie set + correct redirect each time. Verified 2026-05-08 over plain HTTP (HTTPS dev hits a pre-existing HTTP/2 + missing-Host issue with React Router 7.14's CSRF check — separate follow-up).
## 5. Documentation + follow-up
- [ ] 5.1 At archive time, apply the spec delta in `specs/authentication-methods/` to `openspec/specs/`.
- [x] 5.2 Update import paths app-wide from `auth.server.ts` to `./auth/session.ts` and drop the re-exports. (Folded into this PR after the smoke test confirmed everything works.)