awesome-copilot/prompts/dotnet-design-pattern-review.prompt.md
Daniel Scott-Raynsford d260c65769 Add prompts for .NET best practices, design pattern review, GitHub Copilot suggestions, and various update tasks
- Created a prompt for .NET/C# best practices to ensure code quality and adherence to standards.
- Added a design pattern review prompt for evaluating C#/.NET code implementations.
- Introduced prompts for suggesting relevant GitHub Copilot chatmodes and prompts based on repository context.
- Developed a prompt for updating Azure Verified Modules in Bicep files to the latest versions.
- Implemented a prompt for updating implementation plans with new requirements and features.
- Created a prompt for updating the llms.txt file to reflect changes in documentation or specifications.
- Added a prompt for updating markdown file indexes with files from specified folders.
- Developed a prompt for updating object-oriented component documentation according to best practices.
- Created a prompt for updating specification files to align with new requirements and ensure AI-readiness.
2025-07-07 12:51:24 +12:00

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mode: 'ask'
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# .NET/C# Design Pattern Review
Review the C#/.NET code in ${selection} for design pattern implementation and suggest improvements for the solution/project.
## Required Design Patterns
- **Command Pattern**: Generic base classes (`CommandHandler<TOptions>`), `ICommandHandler<TOptions>` interface, `CommandHandlerOptions` inheritance, static `SetupCommand(IHost host)` methods
- **Factory Pattern**: Complex object creation service provider integration
- **Dependency Injection**: Primary constructor syntax, `ArgumentNullException` null checks, interface abstractions, proper service lifetimes
- **Repository Pattern**: Async data access interfaces provider abstractions for connections
- **Provider Pattern**: External service abstractions (database, AI), clear contracts, configuration handling
- **Resource Pattern**: ResourceManager for localized messages, separate .resx files (LogMessages, ErrorMessages)
## Review Checklist
- **Design Patterns**: Identify patterns used. Are Command Handler, Factory, Provider, and Repository patterns correctly implemented? Missing beneficial patterns?
- **Architecture**: Follow namespace conventions (`{Core|Console|App|Service}.{Feature}`)? Proper separation between Core/Console projects? Modular and readable?
- **.NET Best Practices**: Primary constructors, async/await with Task returns, ResourceManager usage, structured logging, strongly-typed configuration?
- **GoF Patterns**: Command, Factory, Template Method, Strategy patterns correctly implemented?
- **SOLID Principles**: Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion violations?
- **Performance**: Proper async/await, resource disposal, ConfigureAwait(false), parallel processing opportunities?
- **Maintainability**: Clear separation of concerns, consistent error handling, proper configuration usage?
- **Testability**: Dependencies abstracted via interfaces, mockable components, async testability, AAA pattern compatibility?
- **Security**: Input validation, secure credential handling, parameterized queries, safe exception handling?
- **Documentation**: XML docs for public APIs, parameter/return descriptions, resource file organization?
- **Code Clarity**: Meaningful names reflecting domain concepts, clear intent through patterns, self-explanatory structure?
- **Clean Code**: Consistent style, appropriate method/class size, minimal complexity, eliminated duplication?
## Improvement Focus Areas
- **Command Handlers**: Validation in base class, consistent error handling, proper resource management
- **Factories**: Dependency configuration, service provider integration, disposal patterns
- **Providers**: Connection management, async patterns, exception handling and logging
- **Configuration**: Data annotations, validation attributes, secure sensitive value handling
- **AI/ML Integration**: Semantic Kernel patterns, structured output handling, model configuration
Provide specific, actionable recommendations for improvements aligned with the project's architecture and .NET best practices.