Investment Performance Web API - Complete Implementation

🎯 Summary

This PR implements a complete, production-ready Investment Performance Web API that fulfills all requirements from the coding exercise.

✅ Requirements Fulfilled

• Get user investments list: Returns investment ID and name via GET /api/investments/user/{userId}
• Get investment details: Returns shares, cost basis, current value, current price, term, and total gain/loss via GET /api/investments/investment/{investmentId}
• All business logic implemented: Proper calculations for gains/losses and term classification
• Access the Readme.md for any questions or reach out to me at mitchellplute@gmail.com.

🏗️ Implementation Highlights

• Framework: ASP.NET Core 9.0 with C#
• Architecture: Clean architecture with dependency injection
• Testing: 27 comprehensive unit tests with 100% pass rate
• Documentation: Swagger/OpenAPI integration with XML comments
• Production Features: Exception handling, logging, input validation, CORS, HTTPS

🧪 Testing

cd CodingExercise.Tests
dotnet test
# Result: 27 tests passed, 0 failed