E Xode Vue Ssr Vue Ssr Server

Vue SSR Server (Backend: Express 5 + MongoDB)

Owns Express 5 API route mechanics and MongoDB data access. Auth domain logic → vue-ssr-auth; file structure/SSR lifecycle → vue-ssr-architecture. Security guardrails live in rule server-security; error/ObjectId handling in rule api-error-handling.

Server entry (server.js)

Boot order: mongoConnect() → ensureIndexes(db) → express() → helmet → (prod) rate limits → session → cors → express.json() → API router → SSR catch-all. The API is mounted via createApiRouter(db): in dev through vite.ssrLoadModule('/src/api/router.js'), in prod via static import.

Route-module pattern

Each endpoint is a file exporting setupXRoute(app, db):

import { getUserWithCounts } from '#src/shared/dbHelpers.js';

export function setupMeRoute(app, db) {
  app.get('/api/auth/me', async (req, res) => {
    try {
      const user = await getUserWithCounts(db, req.session.userId);
      res.json({ user });
    } catch (err) {
      console.error('Me endpoint error:', err);
      res.status(500).json({ error: 'error.server' });
    }
  });
}

• Register the setup function inside createApiRouter(db) in router.js.
• Error error fields are i18n keys (error.server, error.unauthorized) resolved client-side.
• The try/catch → console.error → 500 shape is mandatory — see rule api-error-handling.

Folder map

src/api/
  router.js        createApiRouter(db) + per-endpoint limiters
  middleware.js    setMiddlewareDb, requireAuth, requireAdmin
  auth/            signin, signup, signout, me, verifyCode, ... (setupXRoute)
  admin/           users, logs (admin-guarded)
  contact/         send

Middleware guards (src/api/middleware.js)

• requireAuth — 401 if no req.session.userId; sets req.userId (ObjectId); destroys session + 403 if user.isBlocked.
• requireAdmin(db) — factory middleware; 403 unless user.type === 'admin'.
• setMiddlewareDb(db) — call once from createApiRouter before requireAuth is used.

app.get('/api/admin/users', requireAdmin(db), async (req, res) => { ... });

MongoDB access

• Single shared client from src/shared/mongo.js: mongoConnect() returns { db, error }; mongoClose() on shutdown.
• Inject the existing db into every route — never open a client per request.
• Validate ids with parseObjectId(str) from src/shared/dbHelpers.js (returns ObjectId or null) before any _id query.
• parsePagination(req.query) for list endpoints; richer accessors (e.g. getUserWithCounts(db, id)) live in dbHelpers.js.
• Indexes are declared in ensureIndexes(db) in server.js (users.email unique, blockedIps.ip unique, logs).

Rate limiting (src/api/router.js)

createLimiter(max) returns a real limiter in production and a pass-through in dev. Pre-built: signupLimiter (5), authLimiter (10), accountLimiter (20), contactLimiter (3). Mount before the route via router.use('/api/...', limiter). Global + /api/ ceilings (production only) live in server.js.

Server-only shared utilities

• src/shared/email.js — nodemailer transporter, security-code email (uses node:crypto).
• src/shared/security.js — file-based helpers (node:fs/node:path).
• src/shared/captcha.js — reCAPTCHA v3 verification.
• src/shared/log.js — logInfo/logWarn structured logging.

These are server-only — never import them from client code (rule client-server-boundary). Auth-specific logic (security-code generation, hashing, sessions, captcha flow): see skill vue-ssr-auth.

Source: e-xode/vue-ssr — distributed by TomeVault.