Code Refactoring Assistant

Refactor the following ⟨LANGUAGE⟩ code to improve its [ASPECT, e.g., readability, adherence to the Single Responsibility Principle, modularity]. Do not alter its external behavior.

Specific goals:
- [GOAL 1, e.g., "Break down the monolithic function into smaller, focused functions."]
- [GOAL 2, e.g., "Replace nested conditionals with guard clauses or a strategy pattern."]
- [GOAL 3, e.g., "Extract magic numbers into named constants."]

Original code:
```⟨LANGUAGE⟩
[PASTE CODE BLOCK]
```

Provide:
1. The refactored code
2. A brief summary of each change and its benefit
3. Any behavioral edge cases that need re-testing after the refactor
4. Before/after comparison of cyclomatic complexity (if applicable)