switch to razor pages for logout, so it actually works

src/web/Jordnaer/Pages/Account/Logout.cshtml

@@ -0,0 +1,27 @@
+@page
+
+@model Jordnaer.Components.Account.Pages.LogoutModel
+
+@using Microsoft.AspNetCore.Authorization
+
+@attribute [Authorize]
+
+<form method="post">
+	@Html.AntiForgeryToken()
+	<input type="hidden" name="returnUrl" value="@Model.ReturnUrl"/>
+	<button type="submit" class="nav-link">
+		<span class="bi bi-arrow-bar-left-nav-menu" aria-hidden="true"></span>
+	</button>
+</form>
+
+<div class="container">
+	<div class="alert alert-info text-center" role="alert">
+		Du er nu logget ud.
+	</div>
+</div>
+
+<script>
+    window.onload = () => {
+        document.forms[0].submit();
+    }
+</script>

src/web/Jordnaer/Pages/Account/Logout.cshtml.cs

@@ -0,0 +1,25 @@
+using Jordnaer.Database;
+using Jordnaer.Features.Metrics;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace Jordnaer.Components.Account.Pages;
+
+public class LogoutModel(SignInManager<ApplicationUser> signInManager) : PageModel
+{
+	[BindProperty(SupportsGet = true)]
+	public string? ReturnUrl { get; set; }
+	public void OnGet(){}
+
+	public async Task<IActionResult> OnPostAsync()
+	{
+		await HttpContext.SignOutAsync();
+		await signInManager.SignOutAsync();
+
+		JordnaerMetrics.LogoutCounter.Add(1);
+
+		return LocalRedirect(ReturnUrl ?? "~/");
+	}
+}

src/web/Jordnaer/Program.cs

@@ -101,6 +101,8 @@
 	   .AddHttpContextAccessor()
 	   .AddDefaultSitemapServices<HttpContextBaseUrlProvider>();
 
+builder.Services.AddRazorPages();
+
 var app = builder.Build();
 
 app.UseSecurityHeaders(policies => policies.AddFrameOptionsDeny()
@@ -134,6 +136,8 @@
 app.UseAuthorization();
 app.UseAntiforgery();
 
+app.MapRazorPages();
+
 app.MapRazorComponents<App>()
 	.AddInteractiveServerRenderMode();