111111

Evergreen.Health.Application/Health/Integrations/MiAirX/TcmMusicTransitionService.cs

@@ -61,7 +61,13 @@ public sealed class TcmMusicTransitionService : IHostedService, ITcmMusicRuntime
            tracks is not null && tracks.Count > 0 &&
            tracks.All(track => IsValidTrack(track));
 
-    public async Task StartForConstitutionAsync(string constitutionCode, CancellationToken cancellationToken)
+    public Task StartForConstitutionAsync(string constitutionCode, CancellationToken cancellationToken) =>
+        StartAsync(constitutionCode, onlyIfIdle: false, cancellationToken);
+
+    internal Task<bool> TryStartIdlePlaybackAsync(string constitutionCode, CancellationToken cancellationToken) =>
+        StartAsync(constitutionCode, onlyIfIdle: true, cancellationToken);
+
+    private async Task<bool> StartAsync(string constitutionCode, bool onlyIfIdle, CancellationToken cancellationToken)
     {
         if (!HasPlayableTracks(constitutionCode))
             throw new InvalidOperationException($"{constitutionCode} 的体质音乐 OSS URL 尚未配置完整");
@@ -69,12 +75,14 @@ public sealed class TcmMusicTransitionService : IHostedService, ITcmMusicRuntime
         await _operationLock.WaitAsync(cancellationToken);
         try
         {
+            if (onlyIfIdle && _activeTask is { IsCompleted: false }) return false;
             await CancelCurrentLoopAsync();
             await _miAirX.SetVolumeAsync(DemoStartVolume, cancellationToken);
             await _miAirX.PlayUrlAsync(tracks[0].Url, cancellationToken);
             UpdateStatus(true, DemoStartVolume, "体质音乐正在自动渐弱");
             _activeCancellation = new CancellationTokenSource();
             _activeTask = RunFadeAsync(tracks, constitutionCode, _activeCancellation.Token);
+            return true;
         }
         finally { _operationLock.Release(); }
     }