# Configuration Documentation

The configuration module manages all settings and environment variables for the devb.io application.

## Settings Class

The `Settings` class in `settings.py` is the central configuration management system.

### Key Configuration Areas

1. **API Authentication**
   - `API_KEYS`: List of valid API keys from environment variables
   - Required for application startup

2. **Debug Mode**
   - `DEBUG`: Controlled via environment variable
   - Defaults to false

3. **Directory Paths**
   - `BASE_DIR`: Root directory of the project
   - `DATA_DIR`: Data storage directory
   - `TEMPLATES_DIR`: Template files location
   - `HTML_OUTPUT_DIR`: Generated HTML output location
   - `LOGS_DIR`: Log files directory

4. **API Token Management**
   - Thread-safe token rotation for GitHub API
   - Token retrieval methods:
     - `get_github_token()`
     - `get_groq_key()`

### Environment Variables

Required environment variables:
- `API_KEYS`: Comma-separated list of valid API keys
- `DEBUG`: Boolean flag for debug mode
- Optional API tokens for various services

### File Structure
```
config/
├── settings.py       # Main settings file
└── __init__.py
```

### Usage

The Settings class is designed to be used as a singleton and provides centralized access to all configuration values across the application.