feat: Add notification for upcoming sessions

README.md

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+# Crossfit Application
+
+This is a Python application for managing Crossfit bookings and notifications. The application automates the process of booking Crossfit sessions and sends notifications via email and Telegram when a booking is successful.
+
+## Features
+
+- Automated booking of Crossfit sessions
+- Email and Telegram notifications for successful bookings
+- Configurable preferred sessions
+- Retry logic for booking failures
+- Detailed logging
+
+## Prerequisites
+
+- Docker
+- Docker Compose
+
+## Setup
+
+1. Create a `.env` file based on `.env.example` and fill in the required credentials.
+2. Build and run the application using Docker Compose:
+
+```bash
+docker-compose up --build
+```
+
+3. The application will run in a Docker container, and the logs will be stored in the `./log` directory.
+
+## Usage
+
+The application will automatically check for available sessions and book them based on your preferences. It will send notifications via email and Telegram when a booking is successful.
+
+### Environment Variables
+
+The following environment variables are required:
+
+- `CROSSFIT_USERNAME`: Your Crossfit username
+- `CROSSFIT_PASSWORD`: Your Crossfit password
+- `EMAIL_FROM`: Your email address
+- `EMAIL_TO`: Recipient email address
+- `EMAIL_PASSWORD`: Your email password
+- `TELEGRAM_TOKEN`: Your Telegram bot token
+- `TELEGRAM_CHAT_ID`: Your Telegram chat ID
+
+### Preferred Sessions
+
+You can configure your preferred sessions in the `crossfit_booker.py` file. The preferred sessions are defined as a list of tuples, where each tuple contains the day of the week, start time, and session name.
+
+```python
+PREFERRED_SESSIONS = [
+    (4, "17:00", "WEIGHTLIFTING"),  # Friday 17:00 WEIGHTLIFTING
+    (5, "12:30", "HYROX"),          # Saturday 12:30 HYROX
+    (2, "18:30", "CONDITIONING"),   # Wednesday 18:30 CONDITIONING
+]
+```
+
+## Files
+
+- `Dockerfile`: Docker image definition
+- `docker-compose.yml`: Docker Compose service definition
+- `.env.example`: Example environment variables file
+- `.dockerignore`: Docker ignore file
+- `.gitignore`: Git ignore file
+- `book_crossfit.py`: Main application script
+- `crossfit_booker.py`: Crossfit booking script
+- `session_notifier.py`: Session notification script
+- `requirements.txt`: Python dependencies
+
+## Project Structure
+
+```
+.
+├── Dockerfile
+├── docker-compose.yml
+├── .env.example
+├── .dockerignore
+├── .gitignore
+├── book_crossfit.py
+├── crossfit_booker.py
+├── session_notifier.py
+├── requirements.txt
+└── log
+    └── crossfit_booking.log
+```
+
+## Contributing
+
+Contributions are welcome! Please open an issue or submit a pull request.
+
+## License
+
+This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for details.