misc: Move image assets to Avalonia project

src/Ryujinx/DiscordIntegrationModule.cs

@@ -0,0 +1,136 @@
+using DiscordRPC;
+using Humanizer;
+using Humanizer.Localisation;
+using Ryujinx.Common;
+using Ryujinx.HLE;
+using Ryujinx.HLE.Loaders.Processes;
+using Ryujinx.UI.App.Common;
+using Ryujinx.UI.Common.Configuration;
+using System.Text;
+
+namespace Ryujinx.Ava
+{
+    public static class DiscordIntegrationModule
+    {
+        public static Timestamps StartedAt { get; set; }
+
+        private static string VersionString
+            => (ReleaseInformation.IsCanaryBuild ? "Canary " : string.Empty) + $"v{ReleaseInformation.Version}"; 
+
+        private static readonly string _description = 
+            ReleaseInformation.IsValid 
+                    ? $"{VersionString} {ReleaseInformation.ReleaseChannelOwner}/{ReleaseInformation.ReleaseChannelSourceRepo}@{ReleaseInformation.BuildGitHash}" 
+                    : "dev build";
+
+        private const string ApplicationId = "1293250299716173864";
+
+        private const int ApplicationByteLimit = 128;
+        private const string Ellipsis = "…";
+
+        private static DiscordRpcClient _discordClient;
+        private static RichPresence _discordPresenceMain;
+
+        public static void Initialize()
+        {
+            _discordPresenceMain = new RichPresence
+            {
+                Assets = new Assets
+                {
+                    LargeImageKey = "ryujinx",
+                    LargeImageText = TruncateToByteLength(_description)
+                },
+                Details = "Main Menu",
+                State = "Idling",
+                Timestamps = StartedAt
+            };
+
+            ConfigurationState.Instance.EnableDiscordIntegration.Event += Update;
+            TitleIDs.CurrentApplication.Event += (_, e) =>
+            {
+                if (e.NewValue)
+                    SwitchToPlayingState(
+                        ApplicationLibrary.LoadAndSaveMetaData(e.NewValue),
+                        Switch.Shared.Processes.ActiveApplication
+                    );
+                else 
+                    SwitchToMainState();
+            };
+        }
+
+        private static void Update(object sender, ReactiveEventArgs<bool> evnt)
+        {
+            if (evnt.OldValue != evnt.NewValue)
+            {
+                // If the integration was active, disable it and unload everything
+                if (evnt.OldValue)
+                {
+                    _discordClient?.Dispose();
+
+                    _discordClient = null;
+                }
+
+                // If we need to activate it and the client isn't active, initialize it
+                if (evnt.NewValue && _discordClient == null)
+                {
+                    _discordClient = new DiscordRpcClient(ApplicationId);
+
+                    _discordClient.Initialize();
+                    _discordClient.SetPresence(_discordPresenceMain);
+                }
+            }
+        }
+
+        private static void SwitchToPlayingState(ApplicationMetadata appMeta, ProcessResult procRes)
+        {
+            _discordClient?.SetPresence(new RichPresence
+            {
+                Assets = new Assets
+                {
+                    LargeImageKey = TitleIDs.GetDiscordGameAsset(procRes.ProgramIdText),
+                    LargeImageText = TruncateToByteLength($"{appMeta.Title} (v{procRes.DisplayVersion})"),
+                    SmallImageKey = "ryujinx",
+                    SmallImageText = TruncateToByteLength(_description)
+                },
+                Details = TruncateToByteLength($"Playing {appMeta.Title}"),
+                State = appMeta.LastPlayed.HasValue && appMeta.TimePlayed.TotalSeconds > 5
+                    ? $"Total play time: {appMeta.TimePlayed.Humanize(2, false, maxUnit: TimeUnit.Hour)}"
+                    : "Never played",
+                Timestamps = Timestamps.Now
+            });
+        }
+
+        private static void SwitchToMainState() => _discordClient?.SetPresence(_discordPresenceMain);
+
+        private static string TruncateToByteLength(string input)
+        {
+            if (Encoding.UTF8.GetByteCount(input) <= ApplicationByteLimit)
+            {
+                return input;
+            }
+
+            // Find the length to trim the string to guarantee we have space for the trailing ellipsis.
+            int trimLimit = ApplicationByteLimit - Encoding.UTF8.GetByteCount(Ellipsis);
+
+            // Make sure the string is long enough to perform the basic trim.
+            // Amount of bytes != Length of the string
+            if (input.Length > trimLimit)
+            {
+                // Basic trim to best case scenario of 1 byte characters.
+                input = input[..trimLimit];
+            }
+
+            while (Encoding.UTF8.GetByteCount(input) > trimLimit)
+            {
+                // Remove one character from the end of the string at a time.
+                input = input[..^1];
+            }
+
+            return input.TrimEnd() + Ellipsis;
+        }
+
+        public static void Exit()
+        {
+            _discordClient?.Dispose();
+        }
+    }
+}