Fixed ReturnUrl not working

src/Server/Program.cs

@@ -14,6 +14,7 @@ using System.Configuration;
 using Microsoft.OpenApi.Models;
 using Shared.Models;
 using Microsoft.AspNetCore.ResponseCompression;
+using System.Net;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -161,7 +162,7 @@ app.Use(async (context, next) =>
     {
         if (!context.User.Identity?.IsAuthenticated ?? true)
         {
-            context.Response.Redirect("/Account/Login");
+            context.Response.Redirect($"/Account/Login?ReturnUrl={WebUtility.UrlEncode("/swagger")}");
             return;
         }
 

src/Server/Views/Account/Login.cshtml

@@ -1,3 +1,4 @@
+@using Microsoft.Extensions.Primitives
 @using Server.Services
 @inject LocalizationService T
 @{
@@ -9,6 +10,10 @@
     <h1>Login</h1>
     <form asp-action="Login" method="post" class="mt-4" style="max-width: 400px; margin: auto;">
         <div class="form-group mb-3">
+            @if (Context.Request.Query.TryGetValue("ReturnUrl", out StringValues returnUrl))
+            {
+                <input type="hidden" name="ReturnUrl" value="@(returnUrl)" />
+            }
             <label for="username" class="form-label">@T["Username"]</label>
             <input autofocus type="text" class="form-control" id="username" name="username" autocomplete="username" required>
         </div>