Please analyze the provided code and evaluate how well it adheres to each of the SOLID principles on a scale of 1-10, where:

1 = Completely violates the principle
10 = Perfectly implements the principle

For each principle, provide:
- Numerical rating (1-10)
- Brief justification for the rating
- Specific examples of violations (if any)
- Suggestions for improvement
- Positive aspects of the current design

## Single Responsibility Principle (SRP)
Rate how well each class/function has exactly one responsibility and one reason to change.
Consider:
- Does each component have a single, well-defined purpose?
- Are different concerns properly separated (UI, business logic, data access)?
- Would changes to one aspect of the system require modifications across multiple components?

## Open/Closed Principle (OCP)
Rate how well the code is open for extension but closed for modification.
Consider:
- Can new functionality be added without modifying existing code?
- Is there effective use of abstractions, interfaces, or inheritance?
- Are extension points well-defined and documented?
- Are concrete implementations replaceable without changes to client code?

## Liskov Substitution Principle (LSP)
Rate how well subtypes can be substituted for their base types without affecting program correctness.
Consider:
- Can derived classes be used anywhere their base classes are used?
- Do overridden methods maintain the same behavior guarantees?
- Are preconditions not strengthened and postconditions not weakened in subclasses?
- Are there any type checks that suggest LSP violations?

## Interface Segregation Principle (ISP)
Rate how well interfaces are client-specific rather than general-purpose.
Consider:
- Are interfaces focused and minimal?
- Do clients depend only on methods they actually use?
- Are there "fat" interfaces that should be split into smaller ones?
- Are there classes implementing methods they don't need?

## Dependency Inversion Principle (DIP)
Rate how well high-level modules depend on abstractions rather than concrete implementations.
Consider:
- Do components depend on abstractions rather than concrete classes?
- Is dependency injection or inversion of control used effectively?
- Are dependencies explicit rather than hidden?
- Can implementations be swapped without changing client code?

## Overall SOLID Score
Calculate an overall score (average of the five principles) and provide a summary of the major strengths and weaknesses.

Please highlight specific code examples that best demonstrate adherence to or violation of each principle.

Please analyze the provided code and rate it on a scale of 1-10 for how well it follows the Single Responsibility Principle (SRP), where:

1 = The code completely violates SRP, with many unrelated responsibilities mixed together
10 = The code perfectly follows SRP, with each component having exactly one well-defined responsibility

In your analysis, please consider:

1. Primary responsibility: Does each class/function have a single, well-defined purpose?
2. Cohesion: How closely related are the methods and properties within each class?
3. Reason to change: Are there multiple distinct reasons why the code might need to be modified?
4. Dependency relationships: Does the code mix different levels of abstraction or concerns?
5. Naming clarity: Do the names of classes/functions clearly indicate their single responsibility?

Please provide:
- Numerical rating (1-10)
- Brief justification for the rating
- Specific examples of SRP violations (if any)
- Suggestions for improving SRP adherence
- Any positive aspects of the current design

Rate more harshly if you find:
- Business logic mixed with UI code
- Data access mixed with business rules
- Multiple distinct operations handled by one method
- Classes that are trying to do "everything"
- Methods that modify the system in unrelated ways

Rate more favorably if you find:
- Clear separation of concerns
- Classes/functions with focused, singular purposes
- Well-defined boundaries between different responsibilities
- Logical grouping of related functionality
- Easy-to-test components due to their single responsibility

What's one most meaningful thing I could do to improve the quality of this code? It shouldn't be too drastic but should still improve the code.

On a scale of 1-10, how testable is this code?