Ajoute les amis et les invitations temps reel

ChessCubing.App/Components/PlayInviteOverlay.razor

@@ -0,0 +1,61 @@
+@implements IDisposable
+@inject SocialRealtimeService Realtime
+@inject NavigationManager Navigation
+
+@if (Realtime.IncomingPlayInvite is not null)
+{
+    <div class="play-overlay">
+        <div class="modal-backdrop"></div>
+        <section class="modal-card play-overlay-card" role="dialog" aria-modal="true" aria-labelledby="playInviteTitle">
+            <div class="modal-head">
+                <div>
+                    <p class="eyebrow">Invitation de partie</p>
+                    <h2 id="playInviteTitle">@Realtime.IncomingPlayInvite.SenderDisplayName veut jouer</h2>
+                </div>
+            </div>
+
+            <p class="play-overlay-copy">
+                @Realtime.IncomingPlayInvite.SenderDisplayName te propose une partie ChessCubing et te place cote @RecipientColorLabel.
+            </p>
+
+            <div class="play-overlay-actions">
+                <button class="button secondary small" type="button" @onclick="AcceptAsync">Accepter</button>
+                <button class="button ghost small" type="button" @onclick="DeclineAsync">Refuser</button>
+            </div>
+        </section>
+    </div>
+}
+
+@code {
+    private string RecipientColorLabel
+        => string.Equals(Realtime.IncomingPlayInvite?.RecipientColor, "white", StringComparison.Ordinal)
+            ? "blanc"
+            : "noir";
+
+    protected override async Task OnInitializedAsync()
+    {
+        Realtime.Changed += HandleRealtimeChanged;
+        await Realtime.EnsureStartedAsync();
+    }
+
+    private void HandleRealtimeChanged()
+        => _ = InvokeAsync(StateHasChanged);
+
+    private async Task AcceptAsync()
+    {
+        await Realtime.RespondToIncomingPlayInviteAsync(accept: true);
+
+        var currentPath = new Uri(Navigation.Uri).AbsolutePath.Trim('/');
+        if (!string.Equals(currentPath, "application", StringComparison.OrdinalIgnoreCase) &&
+            !string.Equals(currentPath, "application.html", StringComparison.OrdinalIgnoreCase))
+        {
+            Navigation.NavigateTo("/application.html");
+        }
+    }
+
+    private Task DeclineAsync()
+        => Realtime.RespondToIncomingPlayInviteAsync(accept: false);
+
+    public void Dispose()
+        => Realtime.Changed -= HandleRealtimeChanged;
+}