From 8012ecaa73cfcbc0bfee3ad81bfd8044c97e9750 Mon Sep 17 00:00:00 2001
From: Stevan Freeborn <65925598+StevanFreeborn@users.noreply.github.com>
Date: Sun, 1 Feb 2026 04:27:06 -0600
Subject: [PATCH] feat: wip on login endpoint

- added basic REPR pattern
- added basic vert architecture
- implemented basica validation for single test case
---
 src/FiscalOS.API/Login/Endpoint.cs            | 18 ++++++++++++
 src/FiscalOS.API/Login/Request.cs             |  8 ++++++
 src/FiscalOS.API/Program.cs                   |  3 ++
 tests/FiscalOS.API.Tests/Infra/TestApi.cs     | 11 ++++++++
 .../Integration/LoginTests.cs                 | 28 +++++++++++++++++++
 5 files changed, 68 insertions(+)
 create mode 100644 src/FiscalOS.API/Login/Endpoint.cs
 create mode 100644 src/FiscalOS.API/Login/Request.cs
 create mode 100644 tests/FiscalOS.API.Tests/Infra/TestApi.cs
 create mode 100644 tests/FiscalOS.API.Tests/Integration/LoginTests.cs

diff --git a/src/FiscalOS.API/Login/Endpoint.cs b/src/FiscalOS.API/Login/Endpoint.cs
new file mode 100644
index 0000000..a7e9e9e
--- /dev/null
+++ b/src/FiscalOS.API/Login/Endpoint.cs
@@ -0,0 +1,18 @@
+namespace FiscalOS.API.Login;
+
+internal static class Endpoint
+{
+  private const string Route = "/login";
+
+  public static RouteHandlerBuilder MapLoginEndpoint(this WebApplication app)
+  {
+    return app.MapPost(Route, HandleAsync);
+  }
+
+  private static async Task<IResult> HandleAsync([FromBody] LoginRequest loginRequest)
+  {
+    Console.WriteLine(loginRequest.Username);
+    Console.WriteLine(loginRequest.Password);
+    return Results.Ok();
+  }
+}
\ No newline at end of file
diff --git a/src/FiscalOS.API/Login/Request.cs b/src/FiscalOS.API/Login/Request.cs
new file mode 100644
index 0000000..d793832
--- /dev/null
+++ b/src/FiscalOS.API/Login/Request.cs
@@ -0,0 +1,8 @@
+namespace FiscalOS.API.Login;
+
+public record LoginRequest(
+  [Required]
+  string Username,
+  [Required]
+  string Password
+);
\ No newline at end of file
diff --git a/src/FiscalOS.API/Program.cs b/src/FiscalOS.API/Program.cs
index 6a4fd66..ed5ab3d 100644
--- a/src/FiscalOS.API/Program.cs
+++ b/src/FiscalOS.API/Program.cs
@@ -1,5 +1,6 @@
 var builder = WebApplication.CreateBuilder(args);
 
+builder.Services.AddValidation();
 builder.Services.AddOpenApi();
 
 var app = builder.Build();
@@ -11,4 +12,6 @@ if (app.Environment.IsDevelopment())
 
 app.UseHttpsRedirection();
 
+app.MapLoginEndpoint();
+
 app.Run();
\ No newline at end of file
diff --git a/tests/FiscalOS.API.Tests/Infra/TestApi.cs b/tests/FiscalOS.API.Tests/Infra/TestApi.cs
new file mode 100644
index 0000000..b535b1f
--- /dev/null
+++ b/tests/FiscalOS.API.Tests/Infra/TestApi.cs
@@ -0,0 +1,11 @@
+namespace FiscalOS.API.Tests.Infra;
+
+public class TestApi : WebApplicationFactory<Program>
+{
+  protected override void ConfigureWebHost(IWebHostBuilder builder)
+  {
+    base.ConfigureWebHost(builder);
+
+    builder.ConfigureLogging(static c => c.ClearProviders());
+  }
+}
\ No newline at end of file
diff --git a/tests/FiscalOS.API.Tests/Integration/LoginTests.cs b/tests/FiscalOS.API.Tests/Integration/LoginTests.cs
new file mode 100644
index 0000000..aa2f856
--- /dev/null
+++ b/tests/FiscalOS.API.Tests/Integration/LoginTests.cs
@@ -0,0 +1,28 @@
+using System.Net.Http.Json;
+
+using Microsoft.AspNetCore.Mvc;
+
+namespace FiscalOS.API.Tests.Integration;
+
+public class LoginTests(TestApi testApi) : IClassFixture<TestApi>
+{
+  private readonly TestApi _testApi = testApi;
+
+  [Fact]
+  public async Task Login_WhenUserSubmitsWithoutUsernameOrPassword_ItShouldReturn400WithProblemDetails()
+  {
+    var client = _testApi.CreateClient();
+
+    var res = await client.PostAsJsonAsync("/login", new { }, TestContext.Current.CancellationToken);
+
+    res.StatusCode.Should().Be(System.Net.HttpStatusCode.BadRequest);
+
+    var problem = await res.Content.ReadFromJsonAsync<ValidationProblemDetails>(TestContext.Current.CancellationToken);
+
+    problem!.Errors.Should().BeEquivalentTo(new Dictionary<string, string[]>()
+    {
+      ["Username"] = ["The Username field is required."],
+      ["Password"] = ["The Password field is required."]
+    });
+  }
+}
\ No newline at end of file