Mise en place de l'authentification Keycloak

ChessCubing.App/Services/UserSession.cs

@@ -0,0 +1,39 @@
+using System.Security.Claims;
+using Microsoft.AspNetCore.Components.Authorization;
+
+namespace ChessCubing.App.Services;
+
+public sealed class UserSession(AuthenticationStateProvider authenticationStateProvider)
+{
+    public async ValueTask<UserStorageScope> GetStorageScopeAsync()
+    {
+        var authState = await authenticationStateProvider.GetAuthenticationStateAsync();
+        var userId = ResolveUserId(authState.User);
+
+        return new UserStorageScope(
+            $"{MatchStore.StorageKeyPrefix}:{userId}",
+            $"{MatchStore.WindowNameKeyPrefix}:{userId}:");
+    }
+
+    private static string ResolveUserId(ClaimsPrincipal user)
+    {
+        if (user.Identity?.IsAuthenticated != true)
+        {
+            return "anonymous";
+        }
+
+        var rawIdentifier = user.FindFirst("sub")?.Value
+            ?? user.FindFirst(ClaimTypes.NameIdentifier)?.Value
+            ?? user.FindFirst("preferred_username")?.Value
+            ?? user.Identity?.Name;
+
+        if (string.IsNullOrWhiteSpace(rawIdentifier))
+        {
+            return "authenticated";
+        }
+
+        return Uri.EscapeDataString(rawIdentifier.Trim());
+    }
+}
+
+public readonly record struct UserStorageScope(string StorageKey, string WindowNameKey);