add extensions field to details endpoint

(cherry picked from commit 3787933)

AssettoServer.Shared/Network/Http/Responses/DetailResponse.cs

@@ -41,6 +41,9 @@ public class DetailResponse : InfoResponse
     public IEnumerable<string>? Features { get; set; }
     [JsonPropertyName("loadingImageUrl")]
     public string? LoadingImageUrl { get; set; }
+
+    [JsonPropertyName("extensions")]
+    public Dictionary<string, object>? Extensions { get; set; }
 }
 
 public class DetailResponseAssists

AssettoServer/Network/Http/HttpController.cs

@@ -175,7 +175,8 @@ public async Task<DetailResponse> GetDetails(string? guid)
             Description = _configuration.Extra.ServerDescription,
             Grip = _weatherManager.CurrentWeather.TrackGrip * 100,
             Features = _cspFeatureManager.Features.Keys,
-            PoweredBy = _cache.PoweredBy
+            PoweredBy = _cache.PoweredBy,
+            Extensions = _cache.Extensions
         };
 
         return responseObj;

AssettoServer/Network/Http/HttpInfoCache.cs

@@ -26,6 +26,7 @@ public class HttpInfoCache : CriticalBackgroundService, IAssettoServerAutostart
     public string PoweredBy { get; }
     public DetailResponseAssists Assists { get; }
     public IReadOnlyList<string> Country { get; private set; } = null!;
+    public Dictionary<string, object> Extensions { get; } = [];
 
     public HttpInfoCache(ACServerConfiguration configuration, EntryCarManager entryCarManager, IHostApplicationLifetime lifetime, GeoParamsManager geoParamsManager) : base(lifetime)
     {

AssettoServer/Server/Ai/AiBehavior.cs

@@ -5,6 +5,7 @@
 using System.Reflection;
 using System.Threading;
 using System.Threading.Tasks;
+using AssettoServer.Network.Http;
 using AssettoServer.Network.Tcp;
 using AssettoServer.Server.Ai.Splines;
 using AssettoServer.Server.Configuration;
@@ -24,6 +25,7 @@ public class AiBehavior : CriticalBackgroundService, IAssettoServerAutostart
     private readonly SessionManager _sessionManager;
     private readonly EntryCarManager _entryCarManager;
     private readonly AiSpline _spline;
+    private readonly HttpInfoCache _httpInfoCache;
     //private readonly EntryCar.Factory _entryCarFactory;
 
     private readonly JunctionEvaluator _junctionEvaluator;
@@ -39,12 +41,13 @@ public AiBehavior(SessionManager sessionManager,
         IHostApplicationLifetime applicationLifetime,
         //EntryCar.Factory entryCarFactory,
         CSPServerScriptProvider serverScriptProvider, 
-        AiSpline spline) : base(applicationLifetime)
+        AiSpline spline, HttpInfoCache httpInfoCache) : base(applicationLifetime)
     {
         _sessionManager = sessionManager;
         _configuration = configuration;
         _entryCarManager = entryCarManager;
         _spline = spline;
+        _httpInfoCache = httpInfoCache;
         _junctionEvaluator = new JunctionEvaluator(spline, false);
         //_entryCarFactory = entryCarFactory;
 
@@ -459,8 +462,20 @@ private void AdjustOverbooking()
         }
     }
 
+    private void SetHttpDetailsExtensions()
+    {
+        _httpInfoCache.Extensions.Add("aiTraffic", new Dictionary<string, List<byte>>
+        {
+            { "none", _entryCarManager.EntryCars.Where(c => c.AiMode == AiMode.None).Select(c => c.SessionId).ToList() },
+            { "auto", _entryCarManager.EntryCars.Where(c => c.AiMode == AiMode.Auto).Select(c => c.SessionId).ToList() },
+            { "fixed", _entryCarManager.EntryCars.Where(c => c.AiMode == AiMode.Fixed).Select(c => c.SessionId).ToList() }
+        });
+    }
+
     protected override Task ExecuteAsync(CancellationToken stoppingToken)
     {
+        SetHttpDetailsExtensions();
+
         _ = UpdateAsync(stoppingToken);
         _ = ObstacleDetectionAsync(stoppingToken);