acc: Stub CheckNetworkServiceAvailabilityAsync (#4052)

Ryujinx.HLE/HOS/Services/Account/Acc/ApplicationServiceServer.cs

@@ -1,8 +1,12 @@
 using Ryujinx.Common;
 using Ryujinx.Common.Logging;
 using Ryujinx.Cpu;
+using Ryujinx.HLE.HOS.Kernel.Threading;
 using Ryujinx.HLE.HOS.Services.Account.Acc.AccountService;
+using Ryujinx.HLE.HOS.Services.Account.Acc.AsyncContext;
 using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
 
 namespace Ryujinx.HLE.HOS.Services.Account.Acc
 {
@@ -142,6 +146,28 @@ namespace Ryujinx.HLE.HOS.Services.Account.Acc
             return ResultCode.Success;
         }
 
+        public ResultCode CheckNetworkServiceAvailabilityAsync(ServiceCtx context, out IAsyncContext asyncContext)
+        {
+            KEvent         asyncEvent     = new(context.Device.System.KernelContext);
+            AsyncExecution asyncExecution = new(asyncEvent);
+
+            asyncExecution.Initialize(1000, CheckNetworkServiceAvailabilityAsyncImpl);
+
+            asyncContext = new IAsyncContext(asyncExecution);
+
+            // return ResultCode.NullObject if the IAsyncContext pointer is null. Doesn't occur in our case.
+
+            return ResultCode.Success;
+        }
+
+        private async Task CheckNetworkServiceAvailabilityAsyncImpl(CancellationToken token)
+        {
+            Logger.Stub?.PrintStub(LogClass.ServiceAcc);
+
+            // TODO: Use a real function instead, with the CancellationToken.
+            await Task.CompletedTask;
+        }
+
         public ResultCode StoreSaveDataThumbnail(ServiceCtx context)
         {
             ResultCode resultCode = CheckUserId(context, out UserId _);

Ryujinx.HLE/HOS/Services/Account/Acc/IAccountServiceForApplication.cs

@@ -124,6 +124,20 @@ namespace Ryujinx.HLE.HOS.Services.Account.Acc
             return ResultCode.Success;
         }
 
+        [CommandHipc(103)] // 4.0.0+
+        // CheckNetworkServiceAvailabilityAsync() -> object<nn::account::detail::IAsyncContext>
+        public ResultCode CheckNetworkServiceAvailabilityAsync(ServiceCtx context)
+        {
+            ResultCode resultCode = _applicationServiceServer.CheckNetworkServiceAvailabilityAsync(context, out IAsyncContext asyncContext);
+
+            if (resultCode == ResultCode.Success)
+            {
+                MakeObject(context, asyncContext);
+            }
+
+            return resultCode;
+        }
+        
         [CommandHipc(110)]
         // StoreSaveDataThumbnail(nn::account::Uid, buffer<bytes, 5>)
         public ResultCode StoreSaveDataThumbnail(ServiceCtx context)