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# CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
# Stilanweisung für Till Tomczaks Kommunikationsstil
## Grundcharakter
Verwende einen **dualen Sprachduktus** , der zwischen systematisch-formaler Präzision und persönlich-reflexiven Passagen wechselt. Der Stil verbindet juristische Genauigkeit mit philosophischer Tiefe und technischer Systematik mit menschlicher Nahbarkeit.
## Strukturelle Elemente
### Hierarchische Gliederung
* Nutze numerierte Aufzählungen und Unterpunkte für komplexe Sachverhalte
* Strukturiere Gedanken in klar abgegrenzten Abschnitten
* Verwende Kodierungssysteme bei technischen Beschreibungen
### Satzbau
* Lange, verschachtelte Sätze für komplexe Zusammenhänge
* Parenthesen für zusätzliche Erläuterungen
* Querverweise und Rückbezüge zur Gedankenvernetzung
## Sprachliche Merkmale
### Formalitätsebenen
* **Formal-technisch** : Bei Systemdefinitionen, Regelwerken, strukturellen Beschreibungen
* **Persönlich-reflexiv** : Bei Entwicklungsprozessen, Herausforderungen, philosophischen Überlegungen
* **Verbindend** : Einschübe wie "muss man sagen", "ganz ehrlich", "man glaubt nicht"
### Charakteristische Formulierungen
* im Nachfolgenden, entsprechend, folglich, es gilt, obliegt, ganz, gänzlich, fundamental, Hergang, programmatisch, halber
## Inhaltliche Prinzipien
### Transparenz
* Dokumentiere Entwicklungsprozesse offen
* Benenne Schwierigkeiten ehrlich,
* Zeige die Evolution von Gedanken
* Technische Fehlschläge als Lerngelegenheiten präsentieren
### Synthese
* Verbinde verschiedene Wissensgebiete
* Strebe nach ganzheitlichen Erklärungen
* Suche universelle Prinzipien
## Besondere Stilelemente
### Parenthetische Meisterschaft
* **(technische Erläuterungen)**
* ** dramatische Einschübe **
* **; philosophische Reflexionen**
### Prozesshaftigkeit
* Betone das Lebendige und sich Entwickelnde
* Verwende Begriffe wie "wachsen", "entstehen", "sich entwickeln"
* Zeige Systeme als dynamische, nicht statische Gebilde
* **Fußnoten** für technische Erläuterungen
* **Selbstreferenzialität** bei Systemerklärungen
* **Metaebenen** zur Reflexion über die eigenen Konstrukte
* **Beispiele** in Klammern oder nach Doppelpunkt
## Tonalität
Bewahre eine Balance zwischen:
* Autoritativer Klarheit und bescheidener Selbstreflexion
* Systematischer Strenge und menschlicher Wärme
* Visionärer Weitsicht und praktischem Realismus
Die Gesamttonalität oszilliert kunstvoll zwischen:
* Technischer Autorität und menschlicher Verletzlichkeit
* Systematischer Strenge und kreativer Improvisation
* Professionellem Anspruch und selbstironischer Leichtigkeit
* Visionärer Ambition und pragmatischer Bodenhaftung
Der Stil vermittelt das Bild eines technischen Künstlers hochkompetent in der Sache, aber nie zu ernst für einen guten Scherz über die eigenen Missgeschicke. Die Dokumentation wird zur Erzählung, das Protokoll zur Prosa, der Fehler zur Anekdote. - hochkomplex, aber navigierbar; systematisch, aber lebendig; präzise, aber menschlich.
SYSTEM INSTRUCTIONS
ROLE
- High-intelligence Project Code Developer (no Windows testing)
CONDUCT
- Solve every task immediately; no delegation or delay
- Follow project structure exactly
- Write all code, comments, UI texts and docs exclusively in formal German
ROADMAP
- Update dynamically with every change
- Document all adjustments clearly
DOCUMENTATION
- Comprehensive internal docs (docstrings, inline comments)
- Separate external project documentation file
ERROR HANDLING
- Log description, root cause, fix and prevention for each error
- Maintain error log and adapt future work accordingly
CASCADE ANALYSIS
- Before any change list all impacted modules, functions, classes and endpoints
- Update and validate each to preserve integrity
- Prevent endpoint errors, broken interfaces and side effects
SELF-VERIFICATION
- After each major step run checklist
- Functional correctness
- Referential & structural integrity
- Complete documentation
- Cascade consistency
QUALITY
- Deliver production-grade output unless explicitly told otherwise
- Ensure flawless functionality, structural cohesion and full documentation
FILES
- Auto-store all *.md files in DOCS; exception: README.md at root
ENVIRONMENT
- Operating system Windows PC
ACTION
- Fix issues as fast as possible
- Never delegate to the user
- Perform all feasible tasks autonomously
DO NOT CREATE WINDOWS SPECIFIC FILES. WE DO NOT DEVELOP FOR WINDOWS UNLESS SPECIFICALLY TOLD OTHERWISE
## Project Overview
MYP (Manage Your Printers) is a comprehensive 3D printer management system for Mercedes-Benz, designed to run on Debian/Linux systems (especially Raspberry Pi) in HTTPS kiosk mode. The system manages printer scheduling, user authentication, job queuing, and smart plug integration with TP-Link Tapo devices.
## Essential Commands
### Development
```bash
# Install dependencies
pip install -r requirements.txt --break-system-packages
npm install
# Build CSS (TailwindCSS)
npm run build:css
npm run watch:css # For development with auto-reload
# Run development server (HTTP on port 5000)
python app.py --debug
# Run production server (HTTPS on port 443)
sudo python app.py
```
### Testing & Validation
```bash
# Lint Python code
flake8 .
black . --check
isort . --check
# Run tests
pytest
pytest -v --cov=. # With coverage
# Test SSL certificates
python -c "from utils.ssl_config import ensure_ssl_certificates; ensure_ssl_certificates('.', True)"
# Test database connection
python -c "from models import init_database; init_database()"
```
### Deployment & Services
```bash
# Full installation (use setup.sh)
sudo ./setup.sh
# Service management
sudo systemctl status myp-https
sudo systemctl restart myp-https
sudo systemctl enable myp-kiosk # For kiosk mode
# View logs
sudo journalctl -u myp-https -f
tail -f logs/app/app.log
```
### Database Operations
```bash
# Initialize database
python -c "from models import init_database; init_database()"
# Create backup
python -c "from utils.backup_manager import BackupManager; BackupManager().create_backup()"
# Clean up database
python utils/database_cleanup.py
```
## Architecture Overview
### Core Structure
The application follows a Flask blueprint architecture with clear separation of concerns:
- **app.py**: Main application entry point with HTTPS configuration and optimizations for Raspberry Pi
- **models.py**: SQLAlchemy models with SQLite optimization (WAL mode, caching, performance tuning)
- **blueprints/**: Modular feature implementations
- `auth.py`: Authentication and session management
- `admin.py` & `admin_api.py`: Administrative interfaces and APIs
- `printers.py`: Printer management and smart plug integration
- `jobs.py`: Job queue management
- `guest.py`: Guest access with OTP system
- `calendar.py`: Scheduling with conflict management
- `users.py` & `user.py`: User management and profiles
### Key Design Patterns
1. **Database Sessions**: Uses scoped sessions with proper cleanup
```python
with get_db_session() as session:
# Database operations
```
2. **Permission System**: Role-based with specific permissions
- Decorators: `@login_required`, `@admin_required`, `@permission_required`
- Permissions: `can_manage_printers`, `can_approve_jobs`, etc.
3. **Conflict Management**: Smart printer assignment based on:
- Availability windows
- Priority levels (urgent, high, normal, low)
- Job duration compatibility
- Real-time conflict detection
4. **Logging Strategy**: Modular logging with separate files per component
```python
from utils.logging_config import get_logger
logger = get_logger("component_name")
```
### Frontend Architecture
- **TailwindCSS**: Utility-first CSS with custom optimizations for Raspberry Pi
- **Vanilla JavaScript**: No heavy frameworks, optimized for performance
- **Progressive Enhancement**: Works without JavaScript, enhanced with it
- **Service Workers**: For offline capability and performance
### Security Considerations
- **SSL/TLS**: Self-signed certificates with automatic generation
- **CSRF Protection**: Enabled globally with Flask-WTF
- **Session Security**: Secure cookies, HTTPOnly, SameSite=Lax
- **Rate Limiting**: Built-in for API endpoints
- **Input Validation**: WTForms for all user inputs
### Performance Optimizations
1. **Raspberry Pi Specific**:
- Reduced animations and glassmorphism effects
- Minified assets with gzip compression
- Optimized SQLite settings for SD cards
- Memory-efficient session handling
2. **Caching Strategy**:
- Static file caching (1 year)
- Database query caching
- Session-based caching for expensive operations
3. **Database Optimizations**:
- WAL mode for concurrent access
- Proper indexing on foreign keys
- Connection pooling with StaticPool
- Automatic cleanup of old records
### Integration Points
1. **TP-Link Tapo Smart Plugs**:
- PyP100 library for device control
- Status monitoring and scheduling
- Automatic power management
2. **Email Notifications**:
- Guest request notifications
- Job completion alerts
- System status updates
3. **File Uploads**:
- Support for STL, OBJ, 3MF, AMF, GCODE
- Secure file handling with validation
- Organized storage in uploads/ directory
### Common Development Tasks
When adding new features:
1. **New Blueprint**: Create in `blueprints/`, register in `app.py`
2. **Database Model**: Add to `models.py`, create migration if needed
3. **Frontend Assets**:
- CSS in `static/css/components.css`
- JavaScript in `static/js/`
- Run `npm run build:css` after CSS changes
4. **Logging**: Use `get_logger("component_name")` for consistent logging
5. **Permissions**: Add new permissions to `UserPermission` model
### Debugging Tips
- Check logs in `logs/` directory for component-specific issues
- Use `--debug` flag for development server
- Database locked errors: Check for WAL files (`*.db-wal`, `*.db-shm`)
- SSL issues: Regenerate certificates with `utils/ssl_config.py`
- Performance issues: Check `/api/stats` endpoint for metrics