Update app.py

app.py

@@ -7,6 +7,7 @@ import math
 import time
 import sqlite3
 import os
+import tempfile
 from bs4 import BeautifulSoup
 
 ORS_API_KEY=os.getenv('ORS_API_KEY')
@@ -20,6 +21,21 @@ IST = timezone(timedelta(hours=5, minutes=30))
 def now_ist_naive():
     return datetime.now(IST).replace(tzinfo=None)
 
+
+def resolve_cache_db_path():
+    env_path = os.getenv("BUS_CACHE_DB_PATH")
+    if env_path:
+        return env_path
+
+    for candidate_dir in ("/data", tempfile.gettempdir(), "."):
+        try:
+            if os.path.isdir(candidate_dir) and os.access(candidate_dir, os.W_OK):
+                return os.path.join(candidate_dir, "bus_cache.db")
+        except Exception:
+            continue
+
+    return "bus_cache.db"
+
 APSRTC_HEADERS = {
     "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36",
     "Accept": "*/*",
@@ -228,8 +244,11 @@ class BusCache:
         if deleted > 0:
             print(f"Cleaned up {deleted} old cache entries")
         return deleted
-bus_cache = BusCache()
-bus_cache.cleanup_old_cache(days_old=100)
+bus_cache = BusCache(resolve_cache_db_path())
+try:
+    bus_cache.cleanup_old_cache(days_old=100)
+except sqlite3.OperationalError as e:
+    print(f"Cache cleanup skipped (read-only DB): {e}")
 
 tnstc_manager = TNSTCSessionManager()
 TNSTC_PLACE_CODES = {}