[Rollout] Production rollout 2025-01-02 part 2 (#4292)

Author: premun

src/ProductConstructionService/ProductConstructionService.Api/Pages/Error.cshtml

@@ -0,0 +1,21 @@
+@page
+@model ProductConstructionService.Api.Pages.ErrorModel
+@using System.Net
+@using Microsoft.AspNetCore.Http
+@{
+    ViewBag.Title = "Error";
+}
+
+@if (Model.StatusCode == StatusCodes.Status401Unauthorized)
+{
+    <div>
+        Please <a href="/Account/SignIn?returnUrl=@WebUtility.UrlEncode(Model.ReturnUrl)">Sign In</a> to use this site. Make sure you have joined the
+        <a href="https://coreidentity.microsoft.com/manage/Entitlement/entitlement/dotnetesmaes-z54r" target="_blank">dotnetes-maestro-users group</a>.
+    </div>
+}
+else
+{
+    <div class="alert alert-danger">
+        <strong>@Model.StatusCode</strong> @Model.ErrorMessage
+    </div>
+}

src/ProductConstructionService/ProductConstructionService.Api/Pages/Error.cshtml.cs

@@ -0,0 +1,26 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using Microsoft.AspNetCore.Diagnostics;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace ProductConstructionService.Api.Pages;
+
+public class ErrorModel : PageModel
+{
+    public new int StatusCode { get; set; }
+
+    public string? ErrorMessage { get; set; }
+
+    public string? ReturnUrl => HttpContext.Features.Get<IStatusCodeReExecuteFeature>()?.OriginalPath;
+
+    public void OnGet(int code)
+    {
+        StatusCode = code;
+        ErrorMessage = HttpContext.Items["ErrorMessage"]?.ToString();
+        if (string.IsNullOrEmpty(ErrorMessage))
+        {
+            ErrorMessage = "Unable to process request.";
+        }
+    }
+}

src/ProductConstructionService/ProductConstructionService.Api/Program.cs

@@ -108,6 +108,7 @@ await app.Services.UseLocalWorkItemQueues([
 }
 
 // Add security headers
+app.UseStatusCodePagesWithReExecute("/Error", "?code={0}");
 app.ConfigureSecurityHeaders();
 
 // Map pages and non-API controllers
@@ -120,9 +121,7 @@ await app.Services.UseLocalWorkItemQueues([
     controllers.AllowAnonymous();
 }
 
-// UseSpa fails on OPTIONS requests to index.html
-// https://github.com/dotnet/aspnetcore/issues/5223#issuecomment-2445336133
-app.MapWhen(ctx => ctx.Request.Method != "OPTIONS", a => a.UseSpa(spa =>
+app.UseSpa(spa =>
 {
     if (isDevelopment && Directory.Exists(PcsStartup.LocalCompiledStaticFilesPath))
     {
@@ -135,7 +134,7 @@ await app.Services.UseLocalWorkItemQueues([
     {
         spa.Options.DefaultPageStaticFileOptions = new StaticFileOptions();
     };
-}));
+});
 
 await app.SetWorkItemProcessorInitialState();