refactor: Introduce factory pattern for barcode invoice handlers#91
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Refactors `BarcodeReaderService` to use a `BarcodeHandlerFactory` for resolving `IInvoiceBarcodeHandler` implementations based on `InvoiceType`. This change: * Replaces the manual `switch` statement for handler selection within `BarcodeReaderService` with a dedicated factory. * Leverages dependency injection to register and provide all `IInvoiceBarcodeHandler` implementations to the factory. * Enhances extensibility, allowing new invoice types and their corresponding handlers to be added without modifying the `BarcodeReaderService` directly. * Updates the DI configuration to `Append` registrations for barcode handlers, ensuring all implementations are available to the factory.
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WalkthroughO PR introduz um padrão factory para gerenciar handlers especializados de leitura de código de barras. Cada handler agora expõe seu tipo de nota fiscal correspondente, permitindo que a factory centralize a seleção correta. O ChangesFactory Pattern para Seleção de Barcode Handler
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes Suggested labels
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🧹 Nitpick comments (1)
InvoiceReminder.ExternalServices/BarcodeReader/BarcodeHandlerFactory.cs (1)
9-12: ⚡ Quick winMelhorar a mensagem de erro para
InvoiceTypeduplicadoNa Line 11, se dois handlers tiverem o mesmo
InvoiceType, a falha de inicialização fica pouco diagnóstica. Vale validar duplicidade antes e lançar uma exceção explícita com os tipos conflitantes.💡 Sugestão de ajuste
public BarcodeHandlerFactory(IEnumerable<IInvoiceBarcodeHandler> handlers) { - _handlers = handlers.ToDictionary(h => h.InvoiceType, h => h); + var duplicatedTypes = handlers + .GroupBy(h => h.InvoiceType) + .Where(g => g.Count() > 1) + .Select(g => g.Key) + .ToArray(); + + if (duplicatedTypes.Length > 0) + { + throw new InvalidOperationException( + $"Duplicate barcode handlers registered for: {string.Join(", ", duplicatedTypes)}"); + } + + _handlers = handlers.ToDictionary(h => h.InvoiceType, h => h); }🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the rest with a brief reason, keep changes minimal, and validate. In `@InvoiceReminder.ExternalServices/BarcodeReader/BarcodeHandlerFactory.cs` around lines 9 - 12, A construção de _handlers em BarcodeHandlerFactory está usando ToDictionary diretamente, o que deixa a falha pouco clara se houver InvoiceType duplicado; antes de chamar ToDictionary, valide a coleção IEnumerable<IInvoiceBarcodeHandler> (por exemplo em BarcodeHandlerFactory constructor) agrupando por InvoiceType, detecte chaves com Count>1 e lance uma ArgumentException/InvalidOperationException explícita que liste os InvoiceType conflitantes (e opcionalmente os tipos das implementações) para facilitar diagnóstico, caso contrário prossiga para popular _handlers.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
Nitpick comments:
In `@InvoiceReminder.ExternalServices/BarcodeReader/BarcodeHandlerFactory.cs`:
- Around line 9-12: A construção de _handlers em BarcodeHandlerFactory está
usando ToDictionary diretamente, o que deixa a falha pouco clara se houver
InvoiceType duplicado; antes de chamar ToDictionary, valide a coleção
IEnumerable<IInvoiceBarcodeHandler> (por exemplo em BarcodeHandlerFactory
constructor) agrupando por InvoiceType, detecte chaves com Count>1 e lance uma
ArgumentException/InvalidOperationException explícita que liste os InvoiceType
conflitantes (e opcionalmente os tipos das implementações) para facilitar
diagnóstico, caso contrário prossiga para popular _handlers.
ℹ️ Review info
⚙️ Run configuration
Configuration used: Organization UI
Review profile: CHILL
Plan: Pro
Run ID: 8bd01250-319a-4552-9cde-fb49a9f6bf19
📒 Files selected for processing (9)
InvoiceReminder.CrossCutting.IoC/DependencyInjectionConfig.csInvoiceReminder.ExternalServices/BarcodeReader/AccountInvoiceBarcodeHandler.csInvoiceReminder.ExternalServices/BarcodeReader/BankInvoiceBarcodeHandler.csInvoiceReminder.ExternalServices/BarcodeReader/BarcodeHandlerFactory.csInvoiceReminder.ExternalServices/BarcodeReader/BarcodeReaderService.csInvoiceReminder.ExternalServices/BarcodeReader/IBarcodeHandlerFactory.csInvoiceReminder.ExternalServices/BarcodeReader/IInvoiceBarcodeHandler.csInvoiceReminder.UnitTests.ExternalServices/BarcodeReader/BarcodeHandlerFactoryTests.csInvoiceReminder.UnitTests.ExternalServices/BarcodeReader/BarcodeReaderServiceTests.cs
Adds a check during `BarcodeHandlerFactory` initialization to ensure that no two `IInvoiceBarcodeHandler` implementations are registered for the same `InvoiceType`. This prevents potential runtime errors caused by ambiguous handler resolution and guarantees a clear one-to-one mapping between invoice types and their dedicated handlers.
1 participant
Refactors
BarcodeReaderServiceto use aBarcodeHandlerFactoryfor resolvingIInvoiceBarcodeHandlerimplementations based onInvoiceType.This change:
switchstatement for handler selection withinBarcodeReaderServicewith a dedicated factory.IInvoiceBarcodeHandlerimplementations to the factory.BarcodeReaderServicedirectly.Appendregistrations for barcode handlers, ensuring all implementations are available to the factory.Summary by CodeRabbit
Notas de Lançamento
Refactor
Tests