exectuteCode method should use a collection instead of a switch statement

Either a dictionary `Dictionary>` or `List` could replace the large switch block and be placed next to the text for the list of functionalities.

Find the exectuteCode method with the switch statement in the codebase. Replace it with a dictionary mapping strings to Actions, ensuring all functionalities are preserved. Test that the refactored method behaves identically to the original.

Written by the indexing model from the issue text.