Minimal but real App Router app that builds (next build exit 0):
- src/lib/auth.ts: NextAuth v5 Credentials provider calling checkLogin()
(argon2id/bcrypt + md5->argon2id upgrade gated by CONVERT_PASSWORDS), JWT
session, /api/auth/[...nextauth] route handler.
- src/app: root layout, home (force-dynamic, reads hotel_name via siteSettings),
/login client form (signIn).
- next.config.ts: pinned turbopack.root, serverExternalPackages for the Prisma
MariaDB adapter; tsconfig set up for Next.
Routes: / (dynamic), /login, /api/auth. Verified: next build exit 0, 28 tests.
Still needs DB+APP_KEY to run auth end-to-end. i18n/middleware/pages to follow.
Pure, unit-tested primitives the AtomCMS->Next.js login must reproduce exactly
(verified now with round-trip + known vectors; full end-to-end check deferred
until a real DB + APP_KEY + live emulator are available):
- password.ts: argon2id (m=65536,t=4,p=1 via hash-wasm) + bcrypt ($2y$ accepted)
verify, and the md5->argon2id on-login upgrade gated by convert_passwords
(mirrors RedirectIfTwoFactorAuthenticatable).
- sso-ticket.ts: '{hotel_name without spaces}-{uuidv4}' written to auth_ticket +
ip_current (mirrors User::ssoTicket()).
- laravel-encrypter.ts: AES-256-CBC + HMAC-SHA256 payload compatible with
Laravel encrypt()/encryptString (for existing 2FA secrets) incl. PHP string
(de)serialization.
- totp.ts: otplib Google2FA-compatible TOTP verify (SHA1/6/30).
Libs: hash-wasm + bcryptjs + otplib (pure JS/WASM, no native build). 28 tests.
Simo