Update db.py

db.py

@@ -24,29 +24,37 @@ from typing import Optional
 
 from supabase import create_client, Client
 
-SUPABASE_URL = os.getenv("SUPABASE_URL", "")
-SUPABASE_KEY = os.getenv("SUPABASE_KEY", "")
-
 _supabase: Optional[Client] = None
 
 TABLE = "files"
 
 
 def _get_client() -> Client:
+    """
+    FIX: env vars are now read INSIDE this function (not at module level).
+    This ensures load_dotenv() has already run before we read them,
+    and avoids caching empty strings at import time.
+    """
     global _supabase
     if _supabase is None:
-        if not SUPABASE_URL or not SUPABASE_KEY:
+        url = os.getenv("SUPABASE_URL", "")
+        key = os.getenv("SUPABASE_KEY", "")
+        if not url or not key:
             raise RuntimeError(
                 "SUPABASE_URL and SUPABASE_KEY must be set in environment / .env"
             )
-        _supabase = create_client(SUPABASE_URL, SUPABASE_KEY)
+        _supabase = create_client(url, key)
     return _supabase
 
 
 def init_db():
     """Verify Supabase connection by performing a lightweight query."""
-    client = _get_client()
-    client.table(TABLE).select("file_id").limit(1).execute()
+    try:
+        client = _get_client()
+        client.table(TABLE).select("file_id").limit(1).execute()
+    except Exception as exc:
+        # Re-raise with a clearer message so _startup() can log it properly
+        raise RuntimeError(f"Supabase connection failed: {exc}") from exc
 
 
 # ──────────────────────────────────────────────────
@@ -132,4 +140,4 @@ def count_files() -> int:
         .select("file_id", count="exact")
         .execute()
     )
-    return resp.count or 0
+    return resp.count or 0