feat: preferred sessions are now external

README.md

@@ -30,6 +30,20 @@ docker-compose up --build
 
 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.
 
+### Configuring Preferred Sessions
+
+You can configure your preferred sessions using the `preferred_sessions.json` file. This file should contain a JSON array of session names, for example:
+
+```json
+[
+  "Morning Class",
+  "Evening Class",
+  "Saturday Open Gym"
+]
+```
+
+If the file is not found or contains invalid data, the application will use default hardcoded sessions.
+
 ### Environment Variables
 
 The following environment variables are required:
@@ -44,16 +58,36 @@ The following environment variables are required:
 
 ### 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.
+You can configure your preferred sessions in the `preferred_sessions.json` file. The preferred sessions are defined as a list of objects, where each object 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
+```json
+[
+    {
+        "day_of_week": 4,
+        "start_time": "17:00",
+        "session_name_contains": "WEIGHTLIFTING"
+    },
+    {
+        "day_of_week": 5,
+        "start_time": "12:30",
+        "session_name_contains": "HYROX"
+    },
+    {
+        "day_of_week": 2,
+        "start_time": "18:30",
+        "session_name_contains": "CONDITIONING"
+    }
 ]
 ```
 
+The application will automatically load the preferred sessions from this file. If the file is not found or contains invalid data, it will fall back to the default hardcoded sessions.
+
+#### Fields
+
+- `day_of_week`: Integer representing the day of the week (0=Monday, 6=Sunday)
+- `start_time`: String representing the start time in HH:MM format
+- `session_name_contains`: String containing the name or part of the name of the session
+
 ## Files
 
 - `Dockerfile`: Docker image definition
@@ -64,6 +98,7 @@ PREFERRED_SESSIONS = [
 - `book_crossfit.py`: Main application script
 - `crossfit_booker.py`: Crossfit booking script
 - `session_notifier.py`: Session notification script
+- `preferred_sessions.json`: Configuration file for preferred sessions
 - `requirements.txt`: Python dependencies
 
 ## Project Structure
@@ -79,6 +114,7 @@ PREFERRED_SESSIONS = [
 ├── crossfit_booker.py
 ├── session_notifier.py
 ├── requirements.txt
+├── preferred_sessions.json
 └── log
     └── crossfit_booking.log
 ```