feat(backend): QR-Code-System (Modul 22)

QrModule mit GET /qr/:entityType/:id.svg fuer colonies (Deep-Link
direkt zu /inspections/new), apiaries, queens, honey-batches und
storage-containers. Nutzt pdfkit-Nachbar qrcode zur SVG-Erzeugung.

ApiCore-Backend/test/qr.e2e-spec.ts

@@ -0,0 +1,81 @@
+import { INestApplication } from '@nestjs/common';
+import * as bcrypt from 'bcryptjs';
+import request from 'supertest';
+import { App } from 'supertest/types';
+import { PrismaService } from '../src/prisma/prisma.service';
+import { createTestApp } from './utils/create-test-app';
+import { login } from './utils/api';
+
+describe('QR codes (e2e)', () => {
+  let app: INestApplication<App>;
+  let prisma: PrismaService;
+  const beekeeperEmail = `qr-e2e-beekeeper-${Date.now()}@example.com`;
+  const password = 'SuperSecret123!';
+  let beekeeperId: string;
+  let beekeeperToken: string;
+  let apiaryId: string;
+  let colonyId: string;
+
+  beforeAll(async () => {
+    app = await createTestApp();
+    prisma = app.get(PrismaService);
+
+    const passwordHash = await bcrypt.hash(password, 12);
+    const beekeeper = await prisma.user.create({
+      data: {
+        email: beekeeperEmail,
+        passwordHash,
+        name: 'Beekeeper',
+        role: 'BEEKEEPER',
+      },
+    });
+    beekeeperId = beekeeper.id;
+    beekeeperToken = (await login(app, beekeeperEmail, password)).accessToken;
+
+    const apiary = await prisma.apiary.create({
+      data: { name: `Stand ${Date.now()}` },
+    });
+    apiaryId = apiary.id;
+    const colony = await prisma.colony.create({
+      data: {
+        code: `V-${Date.now()}`,
+        apiaryId,
+        colonyType: 'PRODUCTION_COLONY',
+      },
+    });
+    colonyId = colony.id;
+  });
+
+  afterAll(async () => {
+    await prisma.colony.deleteMany({ where: { id: colonyId } });
+    await prisma.apiary.deleteMany({ where: { id: apiaryId } });
+    await prisma.refreshToken.deleteMany({ where: { userId: beekeeperId } });
+    await prisma.auditLog.deleteMany({ where: { userId: beekeeperId } });
+    await prisma.user.deleteMany({ where: { id: beekeeperId } });
+    await app.close();
+  });
+
+  it('returns an SVG QR code for an existing colony', async () => {
+    const response = await request(app.getHttpServer())
+      .get(`/api/v1/qr/colonies/${colonyId}.svg`)
+      .set('Authorization', `Bearer ${beekeeperToken}`)
+      .expect(200);
+    expect(response.headers['content-type']).toContain('image/svg+xml');
+    const svgBody = response.body as Buffer;
+    expect(svgBody.toString('utf-8')).toContain('<svg');
+  });
+
+  it('returns 404 for a colony that does not exist', () => {
+    return request(app.getHttpServer())
+      .get('/api/v1/qr/colonies/does-not-exist.svg')
+      .set('Authorization', `Bearer ${beekeeperToken}`)
+      .expect(404);
+  });
+
+  it('returns 400 for an unsupported entity type', () => {
+    return request(app.getHttpServer())
+      .get(`/api/v1/qr/unknown/${colonyId}.svg`)
+      .set('Authorization', `Bearer ${beekeeperToken}`)
+      .expect(400);
+  });
+});