chart code with DB

main.py

@@ -12,6 +12,8 @@ app = FastAPI()
 
 # Use an absolute path for the SQLite database file
 database_path = os.path.join(os.getcwd(), "test.db")
+if not os.path.exists(database_path):
+    open(database_path, 'w').close()
 SQLALCHEMY_DATABASE_URL = f"sqlite:///{database_path}"
 
 # Set up logging for debugging