Chase Swick Code Exercise

InvestmentPerformanceApi.Tests/InvestmentControllerTests.cs

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+using Xunit;
+using Moq;
+using Microsoft.Extensions.Logging;
+using Microsoft.AspNetCore.Mvc;
+using System.Collections.Generic;
+using System.Linq;
+using System;
+
+using InvestmentPerformanceApi.Controllers;
+using InvestmentPerformanceApi.Models;
+using InvestmentPerformanceApi.Repos;
+
+public class InvestmentControllerTests
+{
+    private readonly Mock<IInvestmentRepository> _mockRepo;
+    private readonly Mock<ILogger<InvestmentController>> _mockLogger;
+    private readonly InvestmentController _controller;
+
+    public InvestmentControllerTests()
+    {
+        _mockRepo = new Mock<IInvestmentRepository>();
+        _mockLogger = new Mock<ILogger<InvestmentController>>();
+        _controller = new InvestmentController(_mockRepo.Object, _mockLogger.Object);
+    }
+
+    [Fact]
+    public void GetInvestments_ReturnsOk_WhenDataExists()
+    {
+        // Arrange
+        int userId = 1;
+        _mockRepo.Setup(r => r.GetByUserId(userId)).Returns(new List<Investment>
+        {
+            new Investment { Id = 1, Name = "Apple", UserId = userId },
+            new Investment { Id = 2, Name = "Google", UserId = userId }
+        });
+
+        // Act
+        var result = _controller.GetInvestments(userId);
+
+        // Assert
+        var okResult = Assert.IsType<OkObjectResult>(result);
+        var investments = Assert.IsAssignableFrom<IEnumerable<object>>(okResult.Value);
+        Assert.Equal(2, investments.Count());
+    }
+
+    [Fact]
+    public void GetInvestments_Returns500_OnException()
+    {
+        // Arrange
+        int userId = 1;
+        _mockRepo.Setup(r => r.GetByUserId(userId)).Throws(new Exception("DB failure"));
+
+        // Act
+        var result = _controller.GetInvestments(userId);
+
+        // Assert
+        var errorResult = Assert.IsType<ObjectResult>(result);
+        Assert.Equal(500, errorResult.StatusCode);
+    }
+
+    [Fact]
+    public void GetInvestmentDetails_ReturnsOk_WhenFound()
+    {
+        // Arrange
+        int userId = 1, investmentId = 1;
+        _mockRepo.Setup(r => r.GetById(userId, investmentId)).Returns(new Investment
+        {
+            Id = investmentId,
+            UserId = userId,
+            Shares = 10,
+            CostBasisPerShare = 100,
+            CurrentPrice = 150,
+            PurchaseDate = DateTime.UtcNow.AddMonths(-6)
+        });
+
+        // Act
+        var result = _controller.GetInvestmentDetails(userId, investmentId);
+
+        // Assert
+        var okResult = Assert.IsType<OkObjectResult>(result);
+        Assert.NotNull(okResult.Value);
+    }
+
+    [Fact]
+    public void GetInvestmentDetails_ReturnsNotFound_WhenNull()
+    {
+        // Arrange
+        int userId = 1, investmentId = 99;
+        _mockRepo.Setup(r => r.GetById(userId, investmentId)).Returns((Investment)null);
+
+        // Act
+        var result = _controller.GetInvestmentDetails(userId, investmentId);
+
+        // Assert
+        Assert.IsType<NotFoundResult>(result);
+    }
+
+    [Fact]
+    public void GetInvestmentDetails_Returns500_OnException()
+    {
+        // Arrange
+        int userId = 1, investmentId = 1;
+        _mockRepo.Setup(r => r.GetById(userId, investmentId)).Throws(new Exception("Unexpected failure"));
+
+        // Act
+        var result = _controller.GetInvestmentDetails(userId, investmentId);
+
+        // Assert
+        var errorResult = Assert.IsType<ObjectResult>(result);
+        Assert.Equal(500, errorResult.StatusCode);
+    }
+}

InvestmentPerformanceApi.Tests/InvestmentPerformanceApi.Tests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="Moq" Version="4.20.72" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\InvestmentPerformanceApi\InvestmentPerformanceApi.csproj" />
+  </ItemGroup>
+
+</Project>

InvestmentPerformanceApi/Controllers/InvestmentController.cs

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+using Microsoft.AspNetCore.Mvc;
+using InvestmentPerformanceApi.Repos;
+
+namespace InvestmentPerformanceApi.Controllers;
+
+[ApiController]
+[Route("api/users/{userId}/investments")]
+public class InvestmentController : ControllerBase
+{
+    private readonly IInvestmentRepository _repository;
+    private readonly ILogger<InvestmentController> _logger;
+
+    public InvestmentController(IInvestmentRepository repository, ILogger<InvestmentController> logger)
+    {
+        _repository = repository;
+        _logger = logger;
+    }
+
+    [HttpGet]
+    public IActionResult GetInvestments(int userId)
+    {
+        try
+        {
+            _logger.LogInformation("Fetching investments for user {UserId}", userId);
+
+            var investments = _repository.GetByUserId(userId)
+                .Select(i => new { i.Id, i.Name });
+
+            return Ok(investments);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "An error occurred while fetching investments for user {UserId}", userId);
+            return StatusCode(500, new { message = "Something went wrong while processing your request." });
+        }
+    }
+
+    [HttpGet("{investmentId}")]
+    public IActionResult GetInvestmentDetails(int userId, int investmentId)
+    {
+        try
+        {
+            _logger.LogInformation("Fetching details for investment {InvestmentId} for user {UserId}", investmentId, userId);
+
+            var investment = _repository.GetById(userId, investmentId);
+
+            if (investment == null)
+            {
+                _logger.LogWarning("Investment {InvestmentId} not found for user {UserId}", investmentId, userId);
+                return NotFound();
+            }
+
+            return Ok(new
+            {
+                investment.Shares,
+                investment.CostBasisPerShare,
+                investment.CurrentPrice,
+                investment.CurrentValue,
+                investment.Term,
+                TotalGainOrLoss = investment.TotalGainOrLoss
+            });
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "An error occurred while fetching investment {InvestmentId} for user {UserId}", investmentId, userId);
+            return StatusCode(500, new { message = "Something went wrong while processing your request." });
+        }
+    }
+}

InvestmentPerformanceApi/InvestmentPerformanceApi.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.1" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="8.1.1" />
+  </ItemGroup>
+
+</Project>

InvestmentPerformanceApi/Models/Investment.cs

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+namespace InvestmentPerformanceApi.Models;
+
+public class Investment
+{
+    public int Id { get; set; }
+
+    public string Name { get; set; } = string.Empty;
+
+    public int UserId { get; set; }
+
+    public int Shares { get; set; }
+
+    public decimal CostBasisPerShare { get; set; }
+
+    public decimal CurrentPrice { get; set; }
+
+    public DateTime PurchaseDate { get; set; }
+
+    public decimal CurrentValue => Shares * CurrentPrice;
+
+    public string Term => (DateTime.UtcNow - PurchaseDate).TotalDays > 365 ? "Long Term" : "Short Term";
+
+    public decimal TotalGainOrLoss => CurrentValue - (Shares * CostBasisPerShare);
+}

InvestmentPerformanceApi/Models/User.cs

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+namespace InvestmentPerformanceApi.Models;
+
+public class User
+{
+    public int Id { get; set; }
+
+    public string FirstName { get; set; }
+
+    public string LastName { get; set; }
+
+    public string Email { get; set; }
+
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+
+    public ICollection<Investment> Investments { get; set; }
+}
+

InvestmentPerformanceApi/Program.cs

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+using InvestmentPerformanceApi.Repos;
+using Microsoft.OpenApi.Models;
+
+var builder = WebApplication.CreateBuilder(args);
+
+builder.Services.AddControllers();
+
+builder.Services.AddSwaggerGen(c =>
+{
+    c.SwaggerDoc("v1", new OpenApiInfo { Title = "Investment Performance API", Version = "v1" });
+});
+
+builder.Services.AddSingleton<InvestmentRepository>();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+app.UseSwagger();
+app.UseSwaggerUI(c =>
+{
+    c.SwaggerEndpoint("/swagger/v1/swagger.json", "Investment Performance API v1");
+    c.RoutePrefix = string.Empty;
+});
+
+//app.UseHttpsRedirection();
+
+app.MapControllers();
+
+app.Run();
+

InvestmentPerformanceApi/Properties/launchSettings.json

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+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "profiles": {
+    "NuixInvestmentApi": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": false,
+      "applicationUrl": "https://localhost:7116;http://localhost:5000",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}
+

InvestmentPerformanceApi/Repos/IInvestmentRepository.cs

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+using InvestmentPerformanceApi.Models;
+
+namespace InvestmentPerformanceApi.Repos;
+
+public interface IInvestmentRepository
+{
+    IEnumerable<Investment> GetByUserId(int userId);
+
+    Investment? GetById(int userId, int investmentId);
+}

InvestmentPerformanceApi/Repos/InvestmentRepository.cs

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+using InvestmentPerformanceApi.Models;
+
+namespace InvestmentPerformanceApi.Repos;
+
+public class InvestmentRepository : IInvestmentRepository
+{
+    private readonly List<Investment> _investments = new()
+    {
+        new Investment { Id = 1, Name = "Apple", UserId = 1, Shares = 10, CostBasisPerShare = 150, CurrentPrice = 170, PurchaseDate = DateTime.UtcNow.AddMonths(-14) },
+        new Investment { Id = 2, Name = "Google", UserId = 1, Shares = 5, CostBasisPerShare = 1200, CurrentPrice = 1400, PurchaseDate = DateTime.UtcNow.AddMonths(-10) },
+        new Investment { Id = 3, Name = "Microsoft", UserId = 1, Shares = 2, CostBasisPerShare = 450, CurrentPrice = 435, PurchaseDate = DateTime.UtcNow.AddMonths(-2) },
+        new Investment { Id = 4, Name = "Amazon", UserId = 1, Shares = 8, CostBasisPerShare = 2010, CurrentPrice = 1950, PurchaseDate = DateTime.UtcNow.AddMonths(-16) },
+        new Investment { Id = 5, Name = "Oracle", UserId = 1, Shares = 15, CostBasisPerShare = 150, CurrentPrice = 162, PurchaseDate = DateTime.UtcNow.AddMonths(-1) },
+        new Investment { Id = 6, Name = "Dell", UserId = 1, Shares = 5, CostBasisPerShare = 100, CurrentPrice = 107, PurchaseDate = DateTime.UtcNow.AddMonths(-5) },
+        new Investment { Id = 7, Name = "Google", UserId = 2, Shares = 100, CostBasisPerShare = 1200, CurrentPrice = 1400, PurchaseDate = DateTime.UtcNow.AddMonths(-6) },
+        new Investment { Id = 8, Name = "Nvidia", UserId = 2, Shares = 150, CostBasisPerShare = 1300, CurrentPrice = 1330, PurchaseDate = DateTime.UtcNow.AddMonths(-6) },
+        new Investment { Id = 9, Name = "Netflix", UserId = 1, Shares = 12, CostBasisPerShare = 1050, CurrentPrice = 1130, PurchaseDate = DateTime.UtcNow.AddMonths(-3) },
+        new Investment { Id = 10, Name = "Google", UserId = 3, Shares = 10000, CostBasisPerShare = 1200, CurrentPrice = 1400, PurchaseDate = DateTime.UtcNow.AddYears(-3) },
+    };
+
+    public IEnumerable<Investment> GetByUserId(int userId) => _investments.Where(i => i.UserId == userId);
+    public Investment? GetById(int userId, int investmentId) => _investments.FirstOrDefault(i => i.UserId == userId && i.Id == investmentId);
+}

InvestmentPerformanceApi/appsettings.Development.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

InvestmentPerformanceApi/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}