Update app.py

app.py

@@ -246,14 +246,17 @@ def create_app():
 
     @flask_app.route("/upload", methods=["POST"])
     def upload():
-        file = request.files.get("file")
-        if not file:
-            return "No file uploaded", 400
-        file_path = os.path.join(UPLOAD_FOLDER, file.filename)
-        file.save(file_path)
+        
+        if request.method == 'POST':
+            file = request.files['file']
+            if not file:
+                return "No file uploaded", 400
+            if file and file.filename.endswith('.db'):
+                db_path = os.path.join(app.config['UPLOAD_FOLDER'], 'uploaded.db')
+                file.save(db_path)
 
         # Convert the file path to an absolute path and reinitialize the agent_app
-        abs_file_path = os.path.abspath(file_path)
+        abs_file_path = os.path.abspath(db_path)
         global agent_app
         agent_app = create_agent_app(abs_file_path)