Reduce Complexity

This code is too complex. Help me simplify it:

COMPLEX CODE:
[Paste your code]

Complexity symptoms:
- [Deep nesting / long functions / too many parameters / etc.]

The code does: [brief description]

Constraints:
- [Must maintain behavior X]
- [Can't change interface Y]

Suggest refactoring strategies:
- Breaking into smaller functions
- Simplifying conditionals
- Using design patterns if appropriate
- Reducing dependencies