sandbox: Prefer flattened `switch / case` style to `if`-statements

[tcoyvwac]

• Made code more generic in its functionality.
• Made very small helper function-objects to help describe code better.

[patriciogonzalezvivo]

Thank you!

[tcoyvwac]

Thanks for merging @patriciogonzalezvivo! :tada: Once again as always, very grateful! :smile_cat: