Create WebcamProcessSensor.cs

hass-workstation-service/Domain/Sensors/WebcamProcessSensor.cs

@@ -0,0 +1,130 @@
+using hass_workstation_service.Communication;
+using Microsoft.Win32;
+using System;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
+
+namespace hass_workstation_service.Domain.Sensors
+{
+    public class WebcamProcessSensor : AbstractSensor
+    {
+        public WebcamProcessSensor(MqttPublisher publisher, int? updateInterval = null, string name = "WebcamProcess", Guid id = default) : base(publisher, name ?? "WebcamProcess", updateInterval ?? 10, id)
+        {
+        }
+        
+        public override string GetState()
+        {
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                return IsWebCamInUseRegistry();
+            }
+            else
+            {
+                return "unsupported";
+            }
+        }
+        public override SensorDiscoveryConfigModel GetAutoDiscoveryConfig()
+        {
+            return this._autoDiscoveryConfigModel ?? SetAutoDiscoveryConfigModel(new SensorDiscoveryConfigModel()
+            {
+                Name = this.Name,
+                NamePrefix = Publisher.NamePrefix,
+                Unique_id = this.Id.ToString(),
+                Device = this.Publisher.DeviceConfigModel,
+                State_topic = $"homeassistant/{this.Domain}/{Publisher.DeviceConfigModel.Name}/{DiscoveryConfigModel.GetNameWithPrefix(Publisher.NamePrefix, this.ObjectId)}/state",
+                Availability_topic = $"homeassistant/sensor/{Publisher.DeviceConfigModel.Name}/availability"
+            });
+        }
+
+        [SupportedOSPlatform("windows")]
+        private string IsWebCamInUseRegistry()
+        {
+            using (var key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\webcam"))
+            {
+                foreach (var subKeyName in key.GetSubKeyNames())
+                {
+                    // NonPackaged has multiple subkeys
+                    if (subKeyName == "NonPackaged")
+                    {
+                        using (var nonpackagedkey = key.OpenSubKey(subKeyName))
+                        {
+                            foreach (var nonpackagedSubKeyName in nonpackagedkey.GetSubKeyNames())
+                            {
+                                using (var subKey = nonpackagedkey.OpenSubKey(nonpackagedSubKeyName))
+                                {
+                                    if (subKey.GetValueNames().Contains("LastUsedTimeStop"))
+                                    {
+                                        var endTime = subKey.GetValue("LastUsedTimeStop") is long ? (long)subKey.GetValue("LastUsedTimeStop") : -1;
+                                        if (endTime <= 0)
+                                        {
+                                            return nonpackagedSubKeyName;
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                    else
+                    {
+                        using (var subKey = key.OpenSubKey(subKeyName))
+                        {
+                            if (subKey.GetValueNames().Contains("LastUsedTimeStop"))
+                            {
+                                var endTime = subKey.GetValue("LastUsedTimeStop") is long ? (long)subKey.GetValue("LastUsedTimeStop") : -1;
+                                if (endTime <= 0)
+                                {
+                                    return subKeyName;
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+
+            using (var key = Registry.CurrentUser.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\CapabilityAccessManager\ConsentStore\webcam"))
+            {
+                foreach (var subKeyName in key.GetSubKeyNames())
+                {
+                    // NonPackaged has multiple subkeys
+                    if (subKeyName == "NonPackaged")
+                    {
+                        using (var nonpackagedkey = key.OpenSubKey(subKeyName))
+                        {
+                            foreach (var nonpackagedSubKeyName in nonpackagedkey.GetSubKeyNames())
+                            {
+                                using (var subKey = nonpackagedkey.OpenSubKey(nonpackagedSubKeyName))
+                                {
+                                    if (subKey.GetValueNames().Contains("LastUsedTimeStop"))
+                                    {
+                                        var endTime = subKey.GetValue("LastUsedTimeStop") is long ? (long)subKey.GetValue("LastUsedTimeStop") : -1;
+                                        if (endTime <= 0)
+                                        {
+                                            return nonpackagedSubKeyName;
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                    else
+                    {
+                        using (var subKey = key.OpenSubKey(subKeyName))
+                        {
+                            if (subKey.GetValueNames().Contains("LastUsedTimeStop"))
+                            {
+                                var endTime = subKey.GetValue("LastUsedTimeStop") is long ? (long)subKey.GetValue("LastUsedTimeStop") : -1;
+                                if (endTime <= 0)
+                                {
+                                    return subKeyName;
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+
+            return "off";
+        }
+    }
+}