UI: RPC: Maintain game started timestamp for the duration of the AppHost

src/Ryujinx/AppHost.cs

@@ -3,6 +3,7 @@ using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Input;
 using Avalonia.Threading;
+using DiscordRPC;
 using LibHac.Common;
 using LibHac.Ns;
 using LibHac.Tools.FsSystem;
@@ -594,6 +595,8 @@ namespace Ryujinx.Ava
                 gamepad?.ClearLed();
                 gamepad?.Dispose();
             }
+
+            DiscordIntegrationModule.GuestAppStartedAt = null;
             
             Rainbow.Disable();
             Rainbow.Reset();
@@ -685,6 +688,8 @@ namespace Ryujinx.Ava
 
         public async Task<bool> LoadGuestApplication(BlitStruct<ApplicationControlProperty>? customNacpData = null)
         {
+            DiscordIntegrationModule.GuestAppStartedAt = Timestamps.Now;
+            
             InitEmulatedSwitch();
             MainWindow.UpdateGraphicsConfig();
 

src/Ryujinx/DiscordIntegrationModule.cs

@@ -14,7 +14,8 @@ namespace Ryujinx.Ava
 {
     public static class DiscordIntegrationModule
     {
-        public static Timestamps StartedAt { get; set; }
+        public static Timestamps EmulatorStartedAt { get; set; }
+        public static Timestamps GuestAppStartedAt { get; set; }
 
         private static string VersionString
             => (ReleaseInformation.IsCanaryBuild ? "Canary " : string.Empty) + $"v{ReleaseInformation.Version}"; 
@@ -43,7 +44,7 @@ namespace Ryujinx.Ava
                 },
                 Details = "Main Menu",
                 State = "Idling",
-                Timestamps = StartedAt
+                Timestamps = EmulatorStartedAt
             };
 
             ConfigurationState.Instance.EnableDiscordIntegration.Event += Update;
@@ -100,7 +101,7 @@ namespace Ryujinx.Ava
                 State = appMeta.LastPlayed.HasValue && appMeta.TimePlayed.TotalSeconds > 5
                     ? $"Total play time: {ValueFormatUtils.FormatTimeSpan(appMeta.TimePlayed)}"
                     : "Never played",
-                Timestamps = Timestamps.Now
+                Timestamps = GuestAppStartedAt ??= Timestamps.Now
             });
         }
 

src/Ryujinx/Headless/HeadlessRyujinx.Init.cs

@@ -33,7 +33,7 @@ namespace Ryujinx.Headless
         public static void Initialize()
         {
             // Ensure Discord presence timestamp begins at the absolute start of when Ryujinx is launched
-            DiscordIntegrationModule.StartedAt = Timestamps.Now;
+            DiscordIntegrationModule.EmulatorStartedAt = Timestamps.Now;
 
             // Delete backup files after updating.
             Task.Run(Updater.CleanupUpdate);

src/Ryujinx/Program.cs

@@ -94,7 +94,7 @@ namespace Ryujinx.Ava
         private static void Initialize(string[] args)
         {
             // Ensure Discord presence timestamp begins at the absolute start of when Ryujinx is launched
-            DiscordIntegrationModule.StartedAt = Timestamps.Now;
+            DiscordIntegrationModule.EmulatorStartedAt = Timestamps.Now;
 
             // Parse arguments
             CommandLineState.ParseArguments(args);