added branch

backend/src/main.py

@@ -1,9 +1,10 @@
 """Main app for backend api"""
-
+import json
 import logging
 import time
 from contextlib import asynccontextmanager
 from fastapi import FastAPI, HTTPException, BackgroundTasks, Query
+from fastapi.encoders import jsonable_encoder
 
 from .logging_config import configure_logging
 from .structs.landmark import Landmark, Toilets
@@ -96,6 +97,11 @@ def new_trip(preferences: Preferences,
     if len(landmarks) == 0 :
         raise HTTPException(status_code=500, detail="No landmarks were found.")
 
+    # store landmarks in json file for debug
+    landmarks_list = [jsonable_encoder(item) for item in landmarks]        
+    with open('landmarks.json', 'w+') as file:
+        json.dump(landmarks_list, file, indent=4)
+
     # insert start and finish to the landmarks list
     landmarks_short.insert(0, start_landmark)
     landmarks_short.append(end_landmark)