Archive completed meeting assistant changes

MeetingAssistant/Recording/MicrophoneDeviceSelection.cs

@@ -0,0 +1,54 @@
+namespace MeetingAssistant.Recording;
+
+public sealed class MicrophoneDeviceSelection
+{
+    private readonly object sync = new();
+    private string? selectedDeviceId;
+
+    public string? SelectedDeviceId
+    {
+        get
+        {
+            lock (sync)
+            {
+                return selectedDeviceId;
+            }
+        }
+    }
+
+    public void Select(string deviceId)
+    {
+        lock (sync)
+        {
+            selectedDeviceId = string.IsNullOrWhiteSpace(deviceId)
+                ? null
+                : deviceId.Trim();
+        }
+    }
+
+    public MicrophoneDevice? Resolve(
+        string? configuredDeviceId,
+        MicrophoneDevice? defaultDevice,
+        IReadOnlyList<MicrophoneDevice> availableDevices)
+    {
+        var selected = SelectedDeviceId;
+        return FindById(availableDevices, selected) ??
+            FindById(availableDevices, configuredDeviceId) ??
+            defaultDevice;
+    }
+
+    private static MicrophoneDevice? FindById(
+        IReadOnlyList<MicrophoneDevice> devices,
+        string? id)
+    {
+        if (string.IsNullOrWhiteSpace(id))
+        {
+            return null;
+        }
+
+        return devices.FirstOrDefault(device => string.Equals(
+            device.Id,
+            id.Trim(),
+            StringComparison.OrdinalIgnoreCase));
+    }
+}