MVP ready to test

src/app/api/qrs/route.ts

@@ -2,6 +2,9 @@ import { NextRequest, NextResponse } from 'next/server';
 import { cookies } from 'next/headers';
 import { db } from '@/lib/db';
 import { generateSlug } from '@/lib/hash';
+import { createQRSchema, validateRequest } from '@/lib/validationSchemas';
+import { csrfProtection } from '@/lib/csrf';
+import { rateLimit, getClientIdentifier, RateLimits } from '@/lib/rateLimit';
 
 // GET /api/qrs - List user's QR codes
 export async function GET(request: NextRequest) {
@@ -48,9 +51,36 @@ const PLAN_LIMITS = {
 // POST /api/qrs - Create a new QR code
 export async function POST(request: NextRequest) {
   try {
+    // CSRF Protection
+    const csrfCheck = csrfProtection(request);
+    if (!csrfCheck.valid) {
+      return NextResponse.json({ error: csrfCheck.error }, { status: 403 });
+    }
+
     const userId = cookies().get('userId')?.value;
     console.log('POST /api/qrs - userId from cookie:', userId);
 
+    // Rate Limiting (user-based)
+    const clientId = userId || getClientIdentifier(request);
+    const rateLimitResult = rateLimit(clientId, RateLimits.QR_CREATE);
+
+    if (!rateLimitResult.success) {
+      return NextResponse.json(
+        {
+          error: 'Too many requests. Please try again later.',
+          retryAfter: Math.ceil((rateLimitResult.reset - Date.now()) / 1000)
+        },
+        {
+          status: 429,
+          headers: {
+            'X-RateLimit-Limit': rateLimitResult.limit.toString(),
+            'X-RateLimit-Remaining': rateLimitResult.remaining.toString(),
+            'X-RateLimit-Reset': rateLimitResult.reset.toString(),
+          }
+        }
+      );
+    }
+
     if (!userId) {
       return NextResponse.json({ error: 'Unauthorized - no userId cookie' }, { status: 401 });
     }
@@ -70,6 +100,15 @@ export async function POST(request: NextRequest) {
     const body = await request.json();
     console.log('Request body:', body);
 
+    // Validate request body with Zod (only for non-static QRs or simplified validation)
+    // Note: Static QRs have complex nested content structure, so we do basic validation
+    if (!body.isStatic) {
+      const validation = await validateRequest(createQRSchema, body);
+      if (!validation.success) {
+        return NextResponse.json(validation.error, { status: 400 });
+      }
+    }
+
     // Check if this is a static QR request
     const isStatic = body.isStatic === true;