# Team Chat - Projekt-Übersicht

## 📋 Projekt-Status: ✅ VOLLSTÄNDIG

### Implementierte Features

#### ✅ Chat-System
- [x] Benutzerregistrierung & Login (JWT)
- [x] Passwort-Hashing (bcrypt)
- [x] Abteilungs-Management
- [x] Kanal-Verwaltung (pro Abteilung)
- [x] Echtzeit-Nachrichten (WebSocket)
- [x] Datei-Uploads (bis 20 MB)
- [x] Zugriffskontrolle basierend auf Department-Zugehörigkeit

#### ✅ Code-Snippet-Bibliothek
- [x] Snippet CRUD (Create, Read, Update, Delete)
- [x] Visibility-Levels (Private, Department, Organization)
- [x] Filter nach Sprache
- [x] Tag-Suche
- [x] Volltextsuche (Titel & Content)
- [x] Integration in Chat-Nachrichten
- [x] Syntax-Highlighting-Unterstützung

#### ✅ UI/UX
- [x] React + TypeScript Frontend
- [x] Light/Dark-Theme mit Toggle
- [x] Theme-Persistenz (LocalStorage)
- [x] Responsive Design (Tailwind CSS)
- [x] Microsoft Teams-ähnliches Layout
- [x] Sidebar-Navigation (Departments & Channels)
- [x] Separate Snippet-Bibliothek-Ansicht

#### ✅ Tests
- [x] pytest Konfiguration
- [x] Auth Tests (Register, Login, Token)
- [x] Channel Tests (CRUD, Zugriff)
- [x] Message Tests (Erstellen, Laden)
- [x] File Upload Tests
- [x] Snippet Tests (CRUD, Visibility, Suche)
- [x] Test-DB Setup (SQLite In-Memory)

#### ✅ Deployment & Dokumentation
- [x] Docker & Docker-Compose
- [x] .env Konfiguration
- [x] README.md mit vollständiger Anleitung
- [x] QUICKSTART.md für schnellen Einstieg
- [x] ANNAHMEN.md mit Design-Entscheidungen
- [x] Demo-Daten Script
- [x] Setup-Script (bash)

---

## 📊 Statistiken

### Code-Dateien
- **Backend:** 20+ Python-Dateien
- **Frontend:** 15+ TypeScript/React-Komponenten
- **Tests:** 6 Test-Suites
- **Config:** 10+ Konfigurationsdateien

### API-Endpoints
- **Auth:** 3 (register, login, me)
- **Departments:** 4 (CRUD + User-Assignment)
- **Channels:** 4 (CRUD + Department-Filter)
- **Messages:** 3 (Create, List, Get)
- **Files:** 3 (Upload, Download, List)
- **Snippets:** 5 (CRUD + Filter/Search)
- **WebSocket:** 1 (Real-time Channel)

### Datenbank-Modelle
1. User
2. Department
3. UserDepartmentLink (M2M)
4. Channel
5. Message
6. FileAttachment
7. Snippet

---

## 🚀 Quick Start Commands

### Docker
```bash
docker-compose up -d
# Warten auf Services
python3 scripts/create_demo_data.py
# Zugriff: http://localhost:5173
```

### Manuell
```bash
# Backend
cd backend
python -m venv venv && source venv/bin/activate
pip install -r requirements.txt
uvicorn app.main:app --reload

# Frontend (neues Terminal)
cd frontend
npm install && npm run dev
```

### Tests
```bash
cd backend
pytest -v
# oder mit Coverage:
pytest --cov=app --cov-report=html
```

---

## 📂 Verzeichnisstruktur

```
OfficeDesk/
├── backend/
│   ├── app/
│   │   ├── routers/         # API Endpoints
│   │   ├── main.py          # FastAPI App
│   │   ├── models.py        # DB Models
│   │   ├── schemas.py       # Pydantic Schemas
│   │   ├── auth.py          # JWT Auth
│   │   ├── database.py      # DB Connection
│   │   ├── config.py        # Settings
│   │   └── websocket.py     # WebSocket Manager
│   ├── tests/               # pytest Tests
│   ├── uploads/             # File Storage
│   ├── requirements.txt
│   ├── .env
│   └── Dockerfile
├── frontend/
│   ├── src/
│   │   ├── components/
│   │   │   ├── Auth/        # Login/Register
│   │   │   ├── Chat/        # Chat UI
│   │   │   ├── Snippets/    # Snippet Library
│   │   │   └── Layout/      # App Layout
│   │   ├── contexts/        # React Contexts
│   │   ├── services/        # API Client
│   │   ├── types/           # TypeScript Types
│   │   └── App.tsx
│   ├── package.json
│   └── Dockerfile
├── scripts/
│   ├── create_demo_data.py  # Demo Data Generator
│   └── setup.sh             # Setup Script
├── docker-compose.yml
├── README.md
├── QUICKSTART.md
├── ANNAHMEN.md
└── OVERVIEW.md (diese Datei)
```

---

## 🔧 Technologie-Stack

### Backend
- **Language:** Python 3.11
- **Framework:** FastAPI 0.109
- **Database:** PostgreSQL 17
- **ORM:** SQLModel 0.0.14
- **Auth:** python-jose (JWT)
- **Password:** passlib + bcrypt
- **WebSocket:** FastAPI native
- **Testing:** pytest + httpx

### Frontend
- **Language:** TypeScript 5.3
- **Framework:** React 18
- **Build:** Vite 5.0
- **Styling:** Tailwind CSS 3.3
- **HTTP:** Axios 1.6
- **Routing:** React Router 6.20

### DevOps
- **Containers:** Docker + Docker Compose
- **Database:** PostgreSQL 17 (Official Image)
- **Proxy:** Vite Dev Server (Development)

---

## 🎯 Nächste Schritte (Optional)

### Sofort umsetzbar
1. [ ] Emoji-Reactions auf Nachrichten
2. [ ] @Mentions in Messages
3. [ ] User-Avatar-Upload
4. [ ] Snippet-Favoriten
5. [ ] Dark-Mode für Code-Blöcke verfeinern

### Kurzfristig (1-2 Wochen)
1. [ ] Admin-Panel für User-Management
2. [ ] Email-Benachrichtigungen
3. [ ] Message-Edit/Delete
4. [ ] Thread-Antworten
5. [ ] Snippet-Versioning

### Mittelfristig (1-2 Monate)
1. [ ] CI/CD Pipeline (GitHub Actions)
2. [ ] Monitoring (Prometheus + Grafana)
3. [ ] Advanced Search (ElasticSearch)
4. [ ] Mobile-Responsive verbessern
5. [ ] Performance-Optimierungen

---

## 📞 Support & Kontakt

**Entwickler:** Senior-Softwareentwickler  
**Projekt:** Team Chat v1.0  
**Datum:** 2025-12-06  
**Status:** ✅ Production-Ready (nach Security-Review)

**Dokumentation:**
- README.md - Vollständige Anleitung
- QUICKSTART.md - Schnelleinstieg
- ANNAHMEN.md - Design-Entscheidungen
- API Docs - http://localhost:8000/docs

**Lizenz:** Internes Projekt

---

## ✅ Checkliste für Produktiv-Deployment

- [ ] `.env` SECRET_KEY ändern (32+ Zeichen, zufällig)
- [ ] PostgreSQL-Passwort ändern
- [ ] HTTPS/TLS aktivieren
- [ ] CORS-Origins einschränken
- [ ] Rate-Limiting implementieren
- [ ] Backup-Strategie definieren
- [ ] Monitoring einrichten
- [ ] Logging konfigurieren
- [ ] Security-Audit durchführen
- [ ] Load-Testing
- [ ] Datenschutz-Compliance prüfen
- [ ] User-Dokumentation erstellen

---

**🎉 Projekt erfolgreich abgeschlossen!**