From 24c90a8fdebe90dac25ac94ee5d77d495cc9e3f1 Mon Sep 17 00:00:00 2001
From: GreemDev <greem@greemdev.net>
Date: Sun, 16 Mar 2025 00:54:20 -0500
Subject: [PATCH] Prevent being cut off from updates for the future. The
 release channels are now provided via an API endpoint from ryujinx.app.

---
 src/Ryujinx.Common/ReleaseInformation.cs | 60 ++++++++++++++++++++++--
 src/Ryujinx/Systems/Updater.cs           | 19 ++++++--
 2 files changed, 70 insertions(+), 9 deletions(-)

diff --git a/src/Ryujinx.Common/ReleaseInformation.cs b/src/Ryujinx.Common/ReleaseInformation.cs
index 68db97465..c6644ffd6 100644
--- a/src/Ryujinx.Common/ReleaseInformation.cs
+++ b/src/Ryujinx.Common/ReleaseInformation.cs
@@ -1,5 +1,9 @@
+using Ryujinx.Common.Utilities;
 using System;
+using System.Net.Http;
 using System.Reflection;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
 
 namespace Ryujinx.Common
 {
@@ -34,12 +38,60 @@ namespace Ryujinx.Common
 
         public static string Version => IsValid ? BuildVersion : Assembly.GetEntryAssembly()!.GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion;
 
-        public static string GetChangelogUrl(Version currentVersion, Version newVersion) =>
+        public static string GetChangelogUrl(Version currentVersion, Version newVersion, ReleaseChannels.Channel releaseChannel) =>
             IsCanaryBuild 
                 ? $"https://github.com/{ReleaseChannelOwner}/{ReleaseChannelSourceRepo}/compare/Canary-{currentVersion}...Canary-{newVersion}" 
-                : GetChangelogForVersion(newVersion);
+                : GetChangelogForVersion(newVersion, releaseChannel);
         
-        public static string GetChangelogForVersion(Version version) =>
-            $"https://github.com/{ReleaseChannelOwner}/{ReleaseChannelRepo}/releases/{version}";
+        public static string GetChangelogForVersion(Version version, ReleaseChannels.Channel releaseChannel) =>
+            $"https://github.com/{releaseChannel}/releases/{version}";
+        
+        public static async Task<ReleaseChannels> GetReleaseChannelsAsync(HttpClient httpClient)
+        {
+            ReleaseChannelPair releaseChannelPair = JsonHelper.Deserialize(await httpClient.GetStringAsync("https://ryujinx.app/api/release-channels"), ReleaseChannelPairContext.Default.ReleaseChannelPair);
+            return ReleaseChannels.Create(releaseChannelPair);
+        }
+    }
+
+    public struct ReleaseChannels
+    {
+        internal static ReleaseChannels Create(ReleaseChannelPair channelPair) =>
+            new()
+            {
+                Stable = new Channel(channelPair.Stable), 
+                Canary = new Channel(channelPair.Canary)
+            };
+
+        public Channel Stable { get; init; }
+        public Channel Canary { get; init; }
+        
+        public struct Channel
+        {
+            public Channel(string raw)
+            {
+                string[] parts = raw.Split('/');
+                Owner = parts[0];
+                Repo = parts[1];
+            }
+            
+            public string Owner;
+            public string Repo;
+
+            public override string ToString() => $"{Owner}/{Repo}";
+
+            public string GetLatestReleaseApiUrl() =>
+                $"https://api.github.com/repos/{ToString()}/releases/latest";
+        }
+    }
+    
+    [JsonSerializable(typeof(ReleaseChannelPair))]
+    partial class ReleaseChannelPairContext : JsonSerializerContext;
+
+    class ReleaseChannelPair
+    {
+        [JsonPropertyName("stable")]
+        public string Stable { get; set; }
+        [JsonPropertyName("canary")]
+        public string Canary { get; set; }
     }
 }
diff --git a/src/Ryujinx/Systems/Updater.cs b/src/Ryujinx/Systems/Updater.cs
index a601123a7..faea18fd2 100644
--- a/src/Ryujinx/Systems/Updater.cs
+++ b/src/Ryujinx/Systems/Updater.cs
@@ -31,9 +31,9 @@ namespace Ryujinx.Ava.Systems
 {
     internal static class Updater
     {
+        private static ReleaseChannels.Channel? _currentReleaseChannel;
+        
         private const string GitHubApiUrl = "https://api.github.com";
-        private const string LatestReleaseUrl = 
-            $"{GitHubApiUrl}/repos/{ReleaseInformation.ReleaseChannelOwner}/{ReleaseInformation.ReleaseChannelRepo}/releases/latest";
         
         private static readonly GithubReleasesJsonSerializerContext _serializerContext = new(JsonHelper.GetDefaultSerializerOptions());
 
@@ -70,13 +70,22 @@ namespace Ryujinx.Ava.Systems
             }
             
             Logger.Info?.Print(LogClass.Application, "Checking for updates.");
-
+            
             // Get latest version number from GitHub API
             try
             {
                 using HttpClient jsonClient = ConstructHttpClient();
                 
-                string fetchedJson = await jsonClient.GetStringAsync(LatestReleaseUrl);
+                if (_currentReleaseChannel == null)
+                {
+                    ReleaseChannels releaseChannels = await ReleaseInformation.GetReleaseChannelsAsync(jsonClient);
+
+                    _currentReleaseChannel = ReleaseInformation.IsCanaryBuild
+                        ? releaseChannels.Canary
+                        : releaseChannels.Stable;
+                }
+                
+                string fetchedJson = await jsonClient.GetStringAsync(_currentReleaseChannel.Value.GetLatestReleaseApiUrl());
                 GithubReleasesJsonResponse fetched = JsonHelper.Deserialize(fetchedJson, _serializerContext.GithubReleasesJsonResponse);
                 _buildVer = fetched.TagName;
 
@@ -122,7 +131,7 @@ namespace Ryujinx.Ava.Systems
 
                         if (userResult is UserResult.Ok)
                         {
-                            OpenHelper.OpenUrl(ReleaseInformation.GetChangelogForVersion(currentVersion));
+                            OpenHelper.OpenUrl(ReleaseInformation.GetChangelogForVersion(currentVersion, _currentReleaseChannel.Value));
                         }
                     }