1111

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

@@ -12,6 +12,8 @@ public sealed class TcmMusicTransitionService : IHostedService
     private readonly TcmMusicOptions _options;
     private readonly ILogger<TcmMusicTransitionService> _logger;
     private readonly SemaphoreSlim _operationLock = new(1, 1);
+    private readonly object _statusLock = new();
+    private TcmMusicTransitionOutput _status = new();
     private CancellationTokenSource? _activeCancellation;
     private Task? _activeTask;
 
@@ -28,6 +30,18 @@ public sealed class TcmMusicTransitionService : IHostedService
 
     public Task StartAsync(CancellationToken cancellationToken) => Task.CompletedTask;
 
+    public TcmMusicTransitionOutput GetStatus()
+    {
+        lock (_statusLock)
+            return new TcmMusicTransitionOutput
+            {
+                Running = _status.Running,
+                HasVolume = _status.HasVolume,
+                VolumePercent = _status.VolumePercent,
+                Message = _status.Message
+            };
+    }
+
     public async Task StopAsync(CancellationToken cancellationToken)
     {
         try { await StopMusicAsync(cancellationToken); }
@@ -56,6 +70,7 @@ public sealed class TcmMusicTransitionService : IHostedService
             await CancelCurrentLoopAsync();
             await _miAirX.SetVolumeAsync(_options.StartVolume, cancellationToken);
             await _miAirX.PlayUrlAsync(tracks[0].Url, cancellationToken);
+            UpdateStatus(true, _options.StartVolume, "体质音乐正在自动渐弱");
             _activeCancellation = new CancellationTokenSource();
             _activeTask = RunFadeAsync(tracks, constitutionCode, _activeCancellation.Token);
         }
@@ -69,6 +84,7 @@ public sealed class TcmMusicTransitionService : IHostedService
         {
             await CancelCurrentLoopAsync();
             await _miAirX.PlayAsync(cancellationToken);
+            UpdateStatus(false, null, "正在播放测试音乐");
         }
         finally { _operationLock.Release(); }
     }
@@ -81,6 +97,7 @@ public sealed class TcmMusicTransitionService : IHostedService
             // 手动调音量接管当前播放，避免下一次自动渐弱立刻覆盖用户选择。
             await CancelCurrentLoopAsync();
             await _miAirX.SetVolumeAsync(volume, cancellationToken);
+            UpdateStatus(false, volume, "音量已手动设置");
         }
         finally { _operationLock.Release(); }
     }
@@ -92,6 +109,7 @@ public sealed class TcmMusicTransitionService : IHostedService
         {
             await CancelCurrentLoopAsync();
             await _miAirX.StopAsync(cancellationToken);
+            UpdateStatus(false, null, "音乐已停止");
         }
         finally { _operationLock.Release(); }
     }
@@ -116,12 +134,14 @@ public sealed class TcmMusicTransitionService : IHostedService
                 {
                     currentVolume--;
                     await _miAirX.SetVolumeAsync(currentVolume, cancellationToken);
+                    UpdateStatus(true, currentVolume, "体质音乐正在自动渐弱");
                     nextFadeSecond += _options.FadeStepSeconds;
                 }
 
                 if (currentVolume == 0)
                 {
                     await _miAirX.StopAsync(cancellationToken);
+                    UpdateStatus(false, 0, "音量已降至 0，音乐已停止");
                     _logger.LogInformation("体质 {ConstitutionCode} 的助眠音乐已渐弱至 0 并停止", constitutionCode);
                     return;
                 }
@@ -140,6 +160,7 @@ public sealed class TcmMusicTransitionService : IHostedService
             _logger.LogWarning(exception, "体质音乐渐弱或续播中断");
             try { await _miAirX.StopAsync(CancellationToken.None); }
             catch (Exception stopException) { _logger.LogWarning(stopException, "体质音乐中断后停止音箱失败"); }
+            UpdateStatus(false, null, "自动渐弱中断，请查看后端日志");
         }
     }
 
@@ -153,6 +174,21 @@ public sealed class TcmMusicTransitionService : IHostedService
         cancellation.Cancel();
         try { if (task is not null) await task; }
         finally { cancellation.Dispose(); }
+        UpdateStatus(false, null, "自动渐弱已停止");
+    }
+
+    private void UpdateStatus(bool running, int? volume, string message)
+    {
+        lock (_statusLock)
+        {
+            _status.Running = running;
+            if (volume.HasValue)
+            {
+                _status.HasVolume = true;
+                _status.VolumePercent = volume.Value;
+            }
+            _status.Message = message;
+        }
     }
 
     private static bool IsValidTrack(TcmMusicTrackOptions track)
@@ -160,3 +196,11 @@ public sealed class TcmMusicTransitionService : IHostedService
            Uri.TryCreate(track.Url, UriKind.Absolute, out var uri) &&
            uri.Scheme is "http" or "https";
 }
+
+public sealed class TcmMusicTransitionOutput
+{
+    public bool Running { get; set; }
+    public bool HasVolume { get; set; }
+    public int VolumePercent { get; set; }
+    public string Message { get; set; } = string.Empty;
+}