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Review Summary
Excellent work on structuring the application according to SOLID principles! The separation of concerns into distinct modules for displaying, printing, and serialization is well-executed.
I am requesting one critical change before approval. The refactoring is incomplete because the Book class in app/main.py still contains the display, print_book, and serialize methods. The main goal of this task is to adhere to the Single Responsibility Principle, so the Book class should only hold data. Please remove these methods, as their logic has been successfully moved to the BookService.
Additionally, for better type safety, you could refine the type hints in app/services/book_service.py. The current Callable[[str], object] is a bit generic; using the specific abstract base classes like Displayer would make the code clearer.
Once the methods are removed from the Book class, this will be ready to go. Great job so far!
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Footnotes
mateacademy-ai-mentor
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mateacademy-ai-mentor
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Review Summary
Excellent work on this refactoring! I am approving your solution. You've successfully addressed all the previous feedback, resulting in a clean and well-structured application that's a fantastic example of SOLID principles in action. The Book class is now a pure data object, and all responsibilities have been correctly delegated to dedicated services and modules. The separation of concerns is clear and effective. Great job, no further changes are needed!
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