Viewer counts / start time

NostrStreamer/Services/BackgroundStreamManager.cs

@@ -0,0 +1,42 @@
+namespace NostrStreamer.Services;
+
+public class BackgroundStreamManager : BackgroundService
+{
+    private readonly ILogger<BackgroundStreamManager> _logger;
+    private readonly IServiceScopeFactory _scopeFactory;
+
+    public BackgroundStreamManager(ILogger<BackgroundStreamManager> logger, IServiceScopeFactory scopeFactory)
+    {
+        _logger = logger;
+        _scopeFactory = scopeFactory;
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            try
+            {
+                using var scope = _scopeFactory.CreateScope();
+
+                var streamManager = scope.ServiceProvider.GetRequiredService<StreamManager>();
+                var srsApi = scope.ServiceProvider.GetRequiredService<SrsApi>();
+
+                var clients = await srsApi.ListClients();
+                var streams = clients.Where(a => !a.Publish).GroupBy(a => a.Url);
+                foreach (var stream in streams)
+                {
+                    var viewers = stream.Count();
+                    var streamKey = stream.Key.Split("/").Last();
+                    await streamManager.UpdateViewers(streamKey, viewers);
+                }
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Failed to run");
+            }
+
+            await Task.Delay(TimeSpan.FromMinutes(1), stoppingToken);
+        }
+    }
+}