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docs: add architecture.md - system architecture for HMS Licht & Ton homepage

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# HMS Licht & Ton – System Architecture
> **Projekt:** hms-licht-ton (ID 30)
> **Datum:** 2026-07-08
> **Status:** Draft – Ready for Review
> **Autor:** Solution Architect (A0 Orchestrator)
---
## 1. Architektur-Überblick
### 1.1 System-Komponenten
```
┌─────────────────────────────────────────────────────────┐
│ Coolify (Docker) │
│ ┌─────────────┐ ┌─────────────┐ ┌──────────────────┐ │
│ │ Nuxt 3 SSR │ │ FastAPI │ │ PostgreSQL │ │
│ │ (Frontend) │ │ (Backend) │ │ (equipment_cache│ │
│ │ Port 3000 │ │ Port 8000 │ │ rental_requests)│ │
│ └──────┬───────┘ └──────┬──────┘ └────────┬─────────┘ │
│ │ │ │ │
│ │ /api/* │ SQLAlchemy │ │
│ └────────────────►│ │ │
│ │ ┌───────────┐ │ │
│ │ │ Redis │ │ │
│ │ │ (cache, │ │ │
│ │ │ rate-lim)│ │ │
│ │ └─────┬─────┘ │ │
│ │ │ │ │
│ ┌───────────────────────┴────────┴─────────┴──────┐ │
│ │ Traefik (TLS, Routing) │ │
│ │ hms.media-on.de → Nuxt 3000 │ │
│ │ hms.media-on.de/api → FastAPI 8000 │ │
│ └──────────────────────────────────────────────────┘ │
└─────────────────────────────────────────────────────────┘
│
│ HTTPS
▼
┌─────────────────┐
│ Rentman API │
│ api.rentman.net│
│ (Bearer Token) │
└─────────────────┘
```
### 1.2 Container-Topologie
| Container | Image | Port | Abhängigkeiten |
|-----------|-------|------|----------------|
| `hms-frontend` | Node 20 + Nuxt 3 | 3000 | `hms-backend` |
| `hms-backend` | Python 3.12 + FastAPI | 8000 | `hms-postgres`, `hms-redis` |
| `hms-postgres` | PostgreSQL 16 | 5432 | – |
| `hms-redis` | Redis 7 | 6379 | – |
Traefik (Coolify-eigen) routet:
- `hms.media-on.de/*` → `hms-frontend:3000`
- `hms.media-on.de/api/*` → `hms-backend:8000`
---
## 2. Frontend-Architektur (Nuxt 3)
### 2.1 Rendering-Strategie
| Route | Modus | Begründung |
|-------|-------|------------|
| `/` (Home) | SSG (`nuxt generate`) | Statischer Content, SEO/SSR nicht nötig (noindex) |
| `/referenzen` | SSG | Statische Bilder, keine API nötig |
| `/mietkatalog` | SSR (`server`) | Dynamische Equipment-Daten vom Backend |
| `/mietkatalog/:id` | SSR | Equipment-Detail vom Backend |
| `/warenkorb` | CSR | Reine Client-State (localStorage) |
| `/mietanfrage` | CSR | Formular mit Client-State (Warenkorb) |
| `/kontakt` | SSG | Statisches Formular, API-Call bei Submit |
| `/admin` | CSR | Auth-basiert, keine Public-SSR nötig |
| `/impressum` | SSG | Statischer Content |
| `/datenschutz` | SSG | Statischer Content |
| `/agb-vermietung` | SSG | Statischer Content |
**Konfiguration:** `nuxt.config.ts` mit `routeRules`:
```typescript
export default defineNuxtConfig({
routeRules: {
'/': { prerender: true },
'/referenzen': { prerender: true },
'/mietkatalog': { ssr: true },
'/mietkatalog/**': { ssr: true },
'/warenkorb': { ssr: false },
'/mietanfrage': { ssr: false },
'/kontakt': { prerender: true },
'/admin': { ssr: false },
'/impressum': { prerender: true },
'/datenschutz': { prerender: true },
'/agb-vermietung': { prerender: true },
}
})
```
### 2.2 Verzeichnisstruktur
```
frontend/
├── nuxt.config.ts
├── tailwind.config.ts
├── package.json
├── tsconfig.json
├── app.vue
├── assets/
│ ├── css/
│ │ └── main.css (Design Tokens, Tailwind imports)
│ └── img/
│ ├── logo.svg
│ ├── hero-bg.jpg
│ └── ref/ (Referenz-Bilder ref1-9.jpg)
├── components/
│ ├── HmsLogo.vue
│ ├── SpeakerIcon.vue
│ ├── AppHeader.vue
│ ├── AppFooter.vue
│ ├── ServiceCard.vue
│ ├── EquipmentCard.vue
│ ├── LoadingSkeleton.vue
│ ├── EmptyState.vue
│ ├── ErrorState.vue
│ ├── LegalContentPage.vue
│ ├── Lightbox.vue
│ └── CartDrawer.vue
├── composables/
│ ├── useEquipment.ts (API fetch + caching)
│ ├── useCart.ts (Pinia store wrapper)
│ └── useApi.ts (Base API client)
├── layouts/
│ └── default.vue (Header + Footer + slot)
├── pages/
│ ├── index.vue (Home)
│ ├── referenzen.vue
│ ├── mietkatalog/
│ │ ├── index.vue
│ │ └── [id].vue
│ ├── warenkorb.vue
│ ├── mietanfrage.vue
│ ├── kontakt.vue
│ ├── admin.vue
│ ├── impressum.vue
│ ├── datenschutz.vue
│ ├── agb-vermietung.vue
│ └── [...slug].vue (404 catch-all)
├── stores/
│ └── cart.ts (Pinia store, localStorage persist)
├── plugins/
│ └── pinia-persist.client.ts
├── public/
│ └── robots.txt
└── server/
└── middleware/
└── headers.ts (noindex headers)
```
### 2.3 State Management
| State | Lösung | Persistenz |
|-------|--------|------------|
| Warenkorb (Artikel + Mengen) | Pinia store `cart.ts` | localStorage (client-side) |
| UI-State (mobile menu, lightbox) | Component-local `ref()` | keine |
| Equipment-Daten | Nuxt `useFetch` / `useAsyncData` | Nuxt payload cache (SSR) |
| Admin-Auth | JWT in HttpOnly Cookie | Cookie (24h) |
### 2.4 Design Token System
Implementiert als CSS Custom Properties in `assets/css/main.css` und Tailwind-Config:
```css
:root {
/* A0 Dark Theme */
--bg: #131313;
--panel: #1a1a1a;
--surface: #212121;
--row: #272727;
--card: #2d2d2d;
--border: #444444a8;
--secondary: #656565;
--primary: #737a81;
--text: #ffffff;
--text-muted: #d4d4d4;
/* Orange Akzent */
--color-accent: #EC6925;
--color-accent-hover: #d4581a;
--color-accent-light: rgba(236, 105, 37, 0.08);
--color-accent-border: rgba(236, 105, 37, 0.25);
/* Status */
--color-success: #4ade80;
--color-error: #f87171;
--color-warning: #fbbf24;
--color-info: #60a5fa;
/* Radius */
--radius-sm: 2px;
--radius-md: 3px;
--radius-lg: 4px;
/* Transitions */
--transition-fast: 150ms ease;
--transition-base: 250ms ease;
--transition-slow: 400ms ease;
}
```
Tailwind-Config extend mit denselben Werten als utility classes.
---
## 3. Backend-Architektur (FastAPI)
### 3.1 Verzeichnisstruktur
```
backend/
├── main.py (FastAPI app, CORS, routers)
├── config.py (Pydantic Settings, env vars)
├── database.py (SQLAlchemy engine, session)
├── models/
│ ├── __init__.py
│ ├── equipment.py (EquipmentCache model)
│ ├── rental_request.py (RentalRequest + RentalRequestItem)
│ ├── contact.py (Contact model)
│ ├── admin_user.py (AdminUser model)
│ └── sync_log.py (SyncLog model)
├── schemas/
│ ├── __init__.py
│ ├── equipment.py (Pydantic schemas)
│ ├── rental_request.py
│ ├── contact.py
│ ├── auth.py
│ └── sync.py
├── routers/
│ ├── __init__.py
│ ├── equipment.py (GET /equipment, GET /equipment/{id})
│ ├── rental_requests.py (POST /rental-requests)
│ ├── contact.py (POST /contact)
│ ├── auth.py (POST /admin/login, GET /admin/me)
│ ├── admin.py (POST /admin/sync, GET /admin/sync-status)
│ └── health.py (GET /health)
├── services/
│ ├── rentman_import.py (Equipment-Import pipeline)
│ ├── rentman_request.py (Mietanfrage pipeline)
│ ├── email_service.py (SMTP email send)
│ └── auth_service.py (JWT create/verify)
├── cache.py (Redis client, cache helpers)
├── requirements.txt
├── Dockerfile
├── alembic.ini
└── migrations/
└── versions/
```
### 3.2 API-Design
Alle Endpunkte unter Prefix `/api`.
#### Equipment Endpoints
| Method | Path | Beschreibung | Query Params | Response |
|--------|------|--------------|--------------|----------|
| GET | `/api/equipment` | Equipment-Liste | `search`, `category`, `sort` (name_asc, name_desc), `page`, `page_size` | `200` PaginatedResponse<EquipmentItem> |
| GET | `/api/equipment/{id}` | Equipment-Detail | – | `200` EquipmentDetail / `404` |
| GET | `/api/equipment/categories` | Alle Kategorien | – | `200` string[] |
**PaginatedResponse Schema:**
```json
{
"items": [...],
"total": 500,
"page": 1,
"page_size": 20,
"total_pages": 25
}
```
**EquipmentItem Schema:**
```json
{
"id": 123,
"rentman_id": "456",
"name": "L-Acoustics K2",
"number": "K2-001",
"category": "Lautsprecher",
"description": "Line Array Element",
"image_url": "/img/equipment/k2-001.jpg",
"rental_price": null,
"available": true
}
```
**EquipmentDetail Schema (erweitert):**
```json
{
"id": 123,
"rentman_id": "456",
"name": "L-Acoustics K2",
"number": "K2-001",
"category": "Lautsprecher",
"description": "Full description...",
"specifications": {"weight": 56, "power": 750, ...},
"images": ["url1", "url2"],
"rental_price": null,
"available": true,
"brand": "L-Acoustics"
}
```
#### Rental Request Endpoints
| Method | Path | Beschreibung | Body | Response |
|--------|------|--------------|------|----------|
| POST | `/api/rental-requests` | Mietanfrage erstellen | RentalRequestCreate | `201` {reference_number} / `422` |
**RentalRequestCreate Schema:**
```json
{
"event_name": "Sommerfest 2026",
"date_start": "2026-08-15",
"date_end": "2026-08-16",
"location": "München",
"person_count": 100,
"contact_name": "Max Mustermann",
"contact_company": "Firma GmbH",
"contact_email": "max@example.com",
"contact_phone": "+49 170 1234567",
"contact_street": "Hauptstr. 1",
"contact_postalcode": "80000",
"contact_city": "München",
"message": "Brauchen PA für Open-Air",
"items": [
{"equipment_id": 123, "quantity": 2},
{"equipment_id": 456, "quantity": 4}
]
}
```
#### Contact Endpoint
| Method | Path | Beschreibung | Body | Response |
|--------|------|--------------|------|----------|
| POST | `/api/contact` | Kontaktformular | ContactCreate | `200` {success: true} / `422` |
**ContactCreate Schema:**
```json
{
"name": "Max Mustermann",
"email": "max@example.com",
"phone": "+49 170 1234567",
"message": "Anfrage bezüglich...",
"privacy_consent": true
}
```
#### Admin/Auth Endpoints
| Method | Path | Beschreibung | Auth | Response |
|--------|------|--------------|------|----------|
| POST | `/api/admin/login` | Admin-Login | – | `200` {token} / `401` |
| GET | `/api/admin/me` | Aktueller Admin | JWT | `200` {username} / `401` |
| POST | `/api/admin/sync` | Sync triggern | JWT | `200` {sync_id} / `401` |
| GET | `/api/admin/sync-status` | Sync-Status | JWT | `200` SyncStatus |
| GET | `/api/admin/sync-log` | Sync-Log (paginiert) | JWT | `200` SyncLog[] |
#### Health Endpoint
| Method | Path | Response |
|--------|------|----------|
| GET | `/api/health` | `200` {status: "ok", db: "connected", redis: "connected"} |
---
## 4. Datenbank-Schema (PostgreSQL)
### 4.1 Tabellen
```sql
-- Equipment Cache (aus Rentman importiert)
CREATE TABLE equipment_cache (
id SERIAL PRIMARY KEY,
rentman_id VARCHAR(64) UNIQUE NOT NULL,
name VARCHAR(255) NOT NULL,
number VARCHAR(64),
category VARCHAR(128),
subcategory VARCHAR(128),
description TEXT,
specifications JSONB,
images JSONB,
rental_price DECIMAL(10, 2),
brand VARCHAR(128),
available BOOLEAN DEFAULT true,
created_at TIMESTAMP DEFAULT NOW(),
updated_at TIMESTAMP DEFAULT NOW()
);
CREATE INDEX idx_equipment_category ON equipment_cache(category);
CREATE INDEX idx_equipment_name ON equipment_cache(name);
CREATE INDEX idx_equipment_number ON equipment_cache(number);
-- Rental Requests (Mietanfragen)
CREATE TABLE rental_requests (
id SERIAL PRIMARY KEY,
reference_number VARCHAR(32) UNIQUE NOT NULL,
event_name VARCHAR(255) NOT NULL,
date_start DATE NOT NULL,
date_end DATE NOT NULL,
location VARCHAR(255),
person_count INTEGER,
contact_name VARCHAR(255) NOT NULL,
contact_company VARCHAR(255),
contact_email VARCHAR(255) NOT NULL,
contact_phone VARCHAR(64),
contact_street VARCHAR(255),
contact_postalcode VARCHAR(16),
contact_city VARCHAR(128),
message TEXT,
status VARCHAR(32) DEFAULT 'pending',
rentman_request_id VARCHAR(64),
rentman_sync_status VARCHAR(32) DEFAULT 'pending',
rentman_sync_error TEXT,
created_at TIMESTAMP DEFAULT NOW()
);
CREATE INDEX idx_rental_status ON rental_requests(status);
-- Rental Request Items
CREATE TABLE rental_request_items (
id SERIAL PRIMARY KEY,
rental_request_id INTEGER REFERENCES rental_requests(id) ON DELETE CASCADE,
equipment_id INTEGER REFERENCES equipment_cache(id),
equipment_name VARCHAR(255),
rentman_equipment_id VARCHAR(64),
quantity INTEGER NOT NULL DEFAULT 1,
unit_price DECIMAL(10, 2),
rentman_sync_status VARCHAR(32) DEFAULT 'pending'
);
CREATE INDEX idx_rental_items_request ON rental_request_items(rental_request_id);
-- Contacts (Kontaktformular)
CREATE TABLE contacts (
id SERIAL PRIMARY KEY,
name VARCHAR(255) NOT NULL,
email VARCHAR(255) NOT NULL,
phone VARCHAR(64),
message TEXT NOT NULL,
privacy_consent BOOLEAN NOT NULL,
email_sent BOOLEAN DEFAULT false,
created_at TIMESTAMP DEFAULT NOW()
);
-- Admin Users
CREATE TABLE admin_users (
id SERIAL PRIMARY KEY,
username VARCHAR(64) UNIQUE NOT NULL,
password_hash VARCHAR(255) NOT NULL,
created_at TIMESTAMP DEFAULT NOW()
);
-- Sync Log
CREATE TABLE sync_log (
id SERIAL PRIMARY KEY,
sync_type VARCHAR(32) NOT NULL DEFAULT 'equipment',
status VARCHAR(32) NOT NULL,
items_processed INTEGER DEFAULT 0,
items_failed INTEGER DEFAULT 0,
error_message TEXT,
started_at TIMESTAMP DEFAULT NOW(),
completed_at TIMESTAMP
);
CREATE INDEX idx_sync_log_started ON sync_log(started_at DESC);
```
### 4.2 Redis Usage
| Key Pattern | TTL | Zweck |
|-------------|-----|-------|
| `equipment:list:{hash}` | 3600s (1h) | Cached equipment list responses |
| `equipment:detail:{id}` | 3600s (1h) | Cached equipment detail |
| `equipment:categories` | 3600s (1h) | Cached category list |
| `rate:contact:{ip}` | 60s | Rate limit contact form (5/min) |
| `rate:rental:{ip}` | 60s | Rate limit rental requests (5/min) |
| `rate:login:{ip}` | 60s | Rate limit admin login (5/min) |
---
## 5. Rentman-Integration
### 5.1 Equipment-Import Pipeline
```
[Trigger: Cron 6h ODER Admin POST /api/admin/sync]
│
▼
[1] sync_log Eintrag: status='running', started_at=NOW()
│
▼
[2] RentmanAPI GET /equipment?limit=100&offset=0
│ ┌─────────────────────────────────┐
│ │ Loop: solange data nicht leer │
│ │ - Parse response │
│ │ - Upsert in equipment_cache │
│ │ - offset += 100 │
│ │ - Nächste Seite │
│ └─────────────────────────────────┘
│
▼
[3] Redis Cache invalidieren (equipment:*)
│
▼
[4] sync_log Update: status='completed', items_processed=N, completed_at=NOW()
│
▼
[5] Fertig. Frontend liest aus PostgreSQL + Redis Cache.
```
**Fehlerbehandlung:**
- API nicht erreichbar → sync_log status='failed', error_message, bestehende Daten bleiben
- Partial failure (Seite 3/10) → bereits importierte Seiten bleiben, Fehler geloggt, Retry nur für fehlgeschlagene
- Retry-Mechanismus: exponential backoff, max 3 retries pro Seite
### 5.2 Mietanfrage Pipeline
```
[POST /api/rental-requests]
│
▼
[1] Validierung (Pydantic): Event-Daten, Kontakt-Daten, Items
│
▼
[2] rental_requests Eintrag in DB (status='pending', reference_number generiert)
│
▼
[3] rental_request_items in DB speichern
│
▼
[4] RentmanAPI POST /projectrequests
│ → rentman_project_request_id erhalten
│ → rental_requests.rentman_request_id aktualisieren
│
▼
[5] Für jedes Item: RentmanAPI POST /projectrequests/{id}/projectrequestequipment
│ → rental_request_items.rentman_sync_status='success' / 'failed'
│
▼
[6] Bestätigungs-E-Mail an Kunde (reference_number + Item-Liste)
│
▼
[7] Response 201 an Frontend: {reference_number: "HMS-2026-00123"}
```
**Fehlerbehandlung:**
- POST /projectrequests schlägt fehl → status='failed', Rentman-Sync-Retry-Queue, User sieht trotzdem Success ('Anfrage eingegangen, wird verarbeitet')
- Equipment-POST schlägt fehl → item-level retry, Admin-Benachrichtigung
- SMTP nicht erreichbar → E-Mail in Retry-Queue, Admin-Benachrichtigung
### 5.3 Rentman API Mapping
**Import (GET /equipment → equipment_cache):**
| Rentman Feld | DB Feld | Anmerkung |
|--------------|---------|-----------|
| `id` | `rentman_id` | String, unique |
| `name` | `name` | – |
| `number` / `code` | `number` | Artikelnummer |
| `equipment_group.name` | `category` | Kategorie |
| `description` | `description` | – |
| `specifications` | `specifications` | JSONB |
| `images` / `files` | `images` | JSONB array of URLs |
| `rental_price` | `rental_price` | Decimal, nullable |
| `brand` | `brand` | – |
**Anfrage (POST /projectrequests):**
| Frontend Feld | Rentman Feld |
|---------------|-------------|
| `event_name` | `name` |
| `date_start` + `T08:00:00+02:00` | `planperiod_start` |
| `date_end` + `T02:00:00+02:00` | `planperiod_end` |
| `date_start` + `T18:00:00+02:00` | `usageperiod_start` |
| `date_end` + `T23:59:00+02:00` | `usageperiod_end` |
| `contact_company` oder `contact_name` | `contact_name` |
| `contact_name` (split) | `contact_person_first_name` / `contact_person_lastname` |
| `contact_email` | `contact_person_email` |
| `location` | `location_name` |
| `contact_street` | `location_mailing_street` |
| `contact_postalcode` | `location_mailing_postalcode` |
| `contact_city` | `location_mailing_city` |
| `message` | `remark` |
**Equipment POST (POST /projectrequests/{id}/projectrequestequipment):**
| Frontend Feld | Rentman Feld |
|---------------|-------------|
| `equipment_name` | `name` |
| `quantity` | `quantity` / `quantity_total` |
| `unit_price` (oder 0) | `unit_price` |
| `/equipment/{rentman_id}` | `linked_equipment` |
---
## 6. Security-Konzept
### 6.1 Authentifizierung
| Bereich | Methode |
|---------|---------|
| Admin-Login | JWT (python-jose), HttpOnly Cookie, 24h Expiry |
| Public API | Keine Auth nötig (Equipment GET, Contact POST, Rental POST) |
| Admin API | JWT required (sync, sync-status, sync-log) |
**JWT Implementation:**
- Algorithm: HS256
- Secret: `JWT_SECRET` env var
- Payload: `{sub: username, exp: timestamp}`
- Cookie: `hms_admin_token`, HttpOnly, Secure, SameSite=Strict
### 6.2 Rate Limiting
| Endpoint | Limit | Window |
|----------|-------|--------|
| `POST /api/contact` | 5 requests | 60s per IP |
| `POST /api/rental-requests` | 5 requests | 60s per IP |
| `POST /api/admin/login` | 5 requests | 60s per IP |
Implementiert via Redis (INCR + EXPIRE).
### 6.3 Input Validation
- **Backend:** Pydantic schemas (stricter than DB constraints)
- Email: EmailStr validator
- Strings: min/max length, strip whitespace
- Dates: date format, date_start ≤ date_end
- Numbers: positive integers
- Boolean: privacy_consent must be True
- **Frontend:** Client-side validation (Vue reactive) vor Submit
- Gleiche Regeln wie Backend
- Inline Fehler-Meldungen (aria-invalid, aria-describedby)
### 6.4 CORS
```python
# FastAPI CORS
app.add_middleware(
CORSMiddleware,
allow_origins=["https://hms.media-on.de"],
allow_methods=["GET", "POST"],
allow_headers=["*"],
allow_credentials=True, # für Admin-Cookie
)
```
### 6.5 Secrets Management
| Secret | Environment Variable | Usage |
|--------|---------------------|-------|
| Rentman API Token | `RENTMAN_API_TOKEN` | Backend Service |
| JWT Secret | `JWT_SECRET` | Auth Service |
| Database URL | `DATABASE_URL` | SQLAlchemy |
| Redis URL | `REDIS_URL` | Redis client |
| SMTP Host | `SMTP_HOST` | Email Service |
| SMTP Port | `SMTP_PORT` | Email Service |
| SMTP User | `SMTP_USER` | Email Service |
| SMTP Password | `SMTP_PASSWORD` | Email Service |
| SMTP From | `SMTP_FROM` | Email Service |
Alle via Coolify Environment Variables. Nie im Frontend, nie im Git.
---
## 7. Deployment-Architektur
### 7.1 Docker Compose
```yaml
version: '3.8'
services:
frontend:
build: ./frontend
ports:
- "3000:3000"
environment:
- NUXT_PUBLIC_API_BASE=https://hms.media-on.de/api
depends_on:
- backend
restart: unless-stopped
backend:
build: ./backend
ports:
- "8000:8000"
environment:
- DATABASE_URL=postgresql+asyncpg://hms:${DB_PASSWORD}@postgres:5432/hms
- REDIS_URL=redis://redis:6379/0
- RENTMAN_API_TOKEN=${RENTMAN_API_TOKEN}
- JWT_SECRET=${JWT_SECRET}
- SMTP_HOST=${SMTP_HOST}
- SMTP_PORT=${SMTP_PORT}
- SMTP_USER=${SMTP_USER}
- SMTP_PASSWORD=${SMTP_PASSWORD}
- SMTP_FROM=${SMTP_FROM}
depends_on:
- postgres
- redis
restart: unless-stopped
postgres:
image: postgres:16-alpine
volumes:
- postgres_data:/var/lib/postgresql/data
environment:
- POSTGRES_DB=hms
- POSTGRES_USER=hms
- POSTGRES_PASSWORD=${DB_PASSWORD}
restart: unless-stopped
redis:
image: redis:7-alpine
volumes:
- redis_data:/data
restart: unless-stopped
volumes:
postgres_data:
redis_data:
```
### 7.2 Coolify Deployment
- **Platform:** Coolify auf coolify-01 (46.225.91.159)
- **Domain:** hms.media-on.de
- **TLS:** Let's Encrypt via Traefik (Coolify automatisch)
- **Resource Limits:**
- Frontend: 512MB RAM, 0.5 CPU
- Backend: 512MB RAM, 0.5 CPU
- PostgreSQL: 1GB RAM, 1 CPU
- Redis: 256MB RAM
### 7.3 Environments
| Environment | Domain | Zweck |
|-----------|-------|------|
| Dev | dev.hms.media-on.de | Entwicklung, Testing |
| Staging | staging.hms.media-on.de | Pre-Production Verification |
| Prod | hms.media-on.de | Live |
### 7.4 CI/CD Pipeline (Forgejo Actions)
```
[Push to main]
→ [Build Frontend: npm ci && npm run build]
→ [Build Backend: pip install && pytest]
→ [Build Docker Images]
→ [Deploy to Coolify via API]
```
---
## 8. Test-Strategie
### 8.1 Frontend Tests
| Typ | Tool | Scope | Coverage Target |
|-----|------|-------|----------------|
| Unit | Vitest | Composables, Stores, Utils | 80% |
| Component | Vitest + Vue Test Utils | Component rendering, props, emits | 80% |
| E2E | Playwright | Page flows, forms, navigation | Critical paths |
**Critical E2E Paths:**
1. Home → Mietkatalog → Equipment Detail → Add to Cart → Warenkorb → Mietanfrage → Submit
2. Home → Kontakt → Form submit → Success
3. Admin Login → Sync trigger → Status update
4. Referenzen → Filter → Lightbox
5. 404 page on invalid route
### 8.2 Backend Tests
| Typ | Tool | Scope | Coverage Target |
|-----|------|-------|----------------|
| Unit | Pytest | Services, Validators, Helpers | 80% |
| Integration | Pytest + TestClient | API endpoints, DB | 80% |
| E2E | Pytest | Rentman mock → full pipeline | Critical paths |
**Critical Backend Tests:**
1. Equipment import (mocked Rentman API, paginated)
2. Rental request submission (mocked Rentman, email mock)
3. Contact form submission (email mock)
4. Admin login (valid/invalid credentials)
5. Rate limiting (6th request blocked)
6. Equipment search/filter/pagination
### 8.3 Test Infrastructure
- **Frontend:** Vitest config in `frontend/vitest.config.ts`, Playwright config in `frontend/playwright.config.ts`
- **Backend:** Pytest config in `backend/pytest.ini`, conftest.py with fixtures
- **Mocking:** Rentman API mocked via `unittest.mock` / `responses` library
- **Test DB:** SQLite in-memory oder test PostgreSQL instance
---
## 9. E-Mail-Service
### 9.1 Templates
- **Kontaktformular:** HTML + Text template, Reply-To = sender email, To = info@hms-licht-ton.de
- **Mietanfrage-Bestätigung:** HTML + Text template, To = customer email, enthält reference_number + item list
### 9.2 Implementierung
```python
# services/email_service.py
import aiosmtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
class EmailService:
async def send_contact_email(self, contact: ContactCreate) -> bool:
# Build MIME message
# Send via aiosmtplib (async)
# On failure: enqueue in retry queue
...
async def send_rental_confirmation(self, request: RentalRequest, items: list) -> bool:
# Build confirmation email with reference_number
# Send via aiosmtplib
...
```
---
## 10. Architecture Decision Records (ADRs)
### ADR-001: Nuxt 3 als Frontend Framework
- **Status:** Accepted
- **Entscheidung:** Nuxt 3 (Vue 3 + Tailwind CSS) für Frontend
- **Begründung:** SSR/SSG Support für SEO (trotz noindex, für KI-Crawler), Vue 3 Composition API, Mobile-First, große Community
- **Alternativen:** Next.js (React), Astro, plain Vue 3 SPA
- **Nachteile:** Build-Komplexität durch SSR/SSG-Mischung
### ADR-002: FastAPI als Backend Framework
- **Status:** Accepted
- **Entscheidung:** FastAPI (Python, async) für Backend API
- **Begründung:** Rentman Python-Client bereits vorhanden, async für API-Calls, automatische OpenAPI-Doku, Pydantic Validation
- **Alternativen:** Django REST, Express.js, Go
- **Nachteile:** Python ecosystem Abhängigkeiten (SQLAlchemy, etc.)
### ADR-003: PostgreSQL + Redis
- **Status:** Accepted
- **Entscheidung:** PostgreSQL als Primary DB, Redis als Cache + Rate Limiter
- **Begründung:** PostgreSQL für ACID (rental_requests), JSONB für flexible specs; Redis für Caching + Rate Limiting
- **Alternativen:** SQLite (zu einfach), MongoDB (overkill)
### ADR-004: localStorage für Warenkorb (keine Session-Backend)
- **Status:** Accepted
- **Entscheidung:** Client-side localStorage für Warenkorb, kein Backend-Session
- **Begründung:** Keine User-Auth nötig, keine Server-Session-Storage, persistiert über Reloads, einfach zu implementieren
- **Alternativen:** Server-side session (Redis), Cookie-based cart
- **Risiko:** localStorage limit ~5MB, aber Warenkorb-Items sind klein (IDs + quantities)
### ADR-005: noindex/nofollow + JSON-LD
- **Status:** Accepted
- **Entscheidung:** Alle Seiten noindex/nofollow/noarchive/nosnippet, aber JSON-LD LocalBusiness auf Home
- **Begründung:** User möchte keine öffentliche Indexierung, aber KI-Crawler sollen strukturierte Daten erkennen
- **Alternativen:** Vollständige Indexierung (abgelehnt), keine Meta-Tags (zu wenig Info für KI)
### ADR-006: SSG für statische Seiten, SSR für Mietkatalog
- **Status:** Accepted
- **Entscheidung:** Statische Seiten (Home, Referenzen, Legal) als SSG, Mietkatalog als SSR
- **Begründung:** Statische Seiten schnell + cached, Mietkatalog braucht aktuelle Equipment-Daten vom Backend
- **Alternativen:** Alles SSR (zu langsam für statische Seiten), Alles SSG (Mietkatalog nicht aktuell)
### ADR-007: JWT HttpOnly Cookie für Admin-Auth
- **Status:** Accepted
- **Entscheidung:** JWT in HttpOnly Cookie (nicht localStorage), 24h Expiry
- **Begründung:** HttpOnly schützt vor XSS, SameSite=Strict vor CSRF, 24h Balance zwischen Security und Usability
- **Alternativen:** Session in Redis (mehr Complexity), Basic Auth (zu simpel)
### ADR-008: Cron-basierter Equipment-Sync (6h) + manueller Trigger
- **Status:** Accepted
- **Entscheidung:** Equipment-Sync alle 6h via Cron + manuelle Admin-Trigger
- **Begründung:** Equipment ändert sich nicht stündlich, 6h ist aktuell genug, manueller Trigger für Ad-hoc Updates
- **Alternativen:** Webhook von Rentman (nicht verfügbar), Real-time (overkill)
---
## 11. Non-Functional Requirements
### 11.1 Performance
- Page Load < 2s auf 3G (Lighthouse Mobile Score >= 90)
- API Response < 500ms für Equipment-Liste (Redis cached)
- Images: WebP/AVIF, lazy-loading, responsive sizes
- Frontend Bundle < 200KB gzipped
### 11.2 Availability
- Uptime target: 99.5% (kleines Unternehmen, nicht kritisch)
- Health check: GET /api/health (Docker restart if unhealthy)
- Graceful degradation: Equipment aus Cache anzeigen wenn Backend down
### 11.3 Scalability
- Single-tenant, moderate traffic expected
- Redis Cache handles read load
- PostgreSQL handles write load (rental requests)
- Horizontal scaling: post-MVP (mehrere Frontend Container)
---
## 12. Risiken
| Risiko | Wahrscheinlichkeit | Impact | Mitigation |
|--------|-------------------|--------|------------|
| Rentman API Felder unklar | Hoch | Mittel | GET /equipment/{id} testen, flexible JSONB-Spalten |
| Rentman API Rate Limits | Niedrig | Mittel | Paginated import, 6h interval, caching |
| SMTP nicht erreichbar | Niedrig | Niedrig | Retry-Queue, Admin-Notification |
| Logo SVG nicht verfügbar | Mittel | Niedrig | Fallback-Text 'HMS Licht & Ton' |
| Referenz-Bilder fehlen | Mittel | Niedrig | Placeholder images, Unsplash fallback |
| localStorage Limit | Niedrig | Niedrig | Nur IDs + quantities, max ~1000 items |
---
## 13. Offene Fragen
1. Rentman Equipment-Felder: Welche Felder sind im `equipment`-Objekt verfügbar? → GET /equipment/{id} testen
2. Equipment-Kategorien: Wie strukturiert? Flaches Feld oder nested object? → API testen
3. AGB-Texte: Vom User als Text/Markdown bereitstellen?
4. Referenz-Bilder: 9 Dateien vom User bereitstellen?
5. SMTP-Zugangsdaten: Welcher Server?
6. USt-IdNr: Für Impressum benötigt?
7. Mietpreise: Anzeigen oder 'auf Anfrage'?
---
## 14. Handoff Summary
- **architecture status:** COMPLETE – Alle Komponenten, API-Endpunkte, DB-Schema, Security, Deployment dokumentiert
- **8 ADRs** mit Begründung und Alternativen
- **6-8 Tasks** im task_graph.json mit Test-Specs und Abhängigkeiten
- **ready for review:** YES – Qualitätssicherung durch quality_reviewer empfohlen