feat: add endpoint info messenger

src/NvxEpi/Devices/NvxBaseDevice.cs

@@ -165,6 +165,10 @@ protected void AddMcMessengers()
 
             mc.AddDeviceMessenger(secondaryAudioMessenger);
 
+            var infoMessenger = new EndpointInfoMessenger($"{Key}-endpointInfo", $"/device/{Key}", this);
+
+            mc.AddDeviceMessenger(infoMessenger);
+
             if (!(this is IHdmiInput hdmiInputDevice))
             {
                 Debug.LogMessage(Serilog.Events.LogEventLevel.Information, "{key:l} does NOT implement IHdmiInput interface", this, Key);

src/NvxEpi/McMessengers/EndpointInfoMessenger.cs

@@ -0,0 +1,70 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using NvxEpi.Devices;
+using NvxEpi.Services.Feedback;
+using PepperDash.Essentials.AppServer.Messengers;
+using PepperDash.Essentials.Core;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NvxEpi.McMessengers
+{
+    public class EndpointInfoMessenger:MessengerBase
+    {
+        private readonly NvxBaseDevice device;
+
+        private readonly StringFeedback deviceNameFeedback;
+        public EndpointInfoMessenger(string key, string path, NvxBaseDevice device): base(key, path, device)
+        {
+            this.device = device;
+
+            deviceNameFeedback = device.Feedbacks.FirstOrDefault(fb => fb.Key == DeviceNameFeedback.Key) as StringFeedback;
+
+            if (deviceNameFeedback == null)
+            {
+                return;
+            }
+
+            deviceNameFeedback.OutputChange += SendUpdate;
+        }
+
+        protected override void RegisterActions()
+        {
+            base.RegisterActions();
+
+            AddAction("/fullStatus", SendFullStatus);
+
+        }
+
+        private void SendFullStatus(string id, JToken content)
+        {
+            PostStatusMessage(new EndpointInfoStateMessage
+            {
+                DeviceName = deviceNameFeedback?.StringValue ?? string.Empty
+            });
+        }
+
+        private void SendUpdate(object sender, FeedbackEventArgs args)
+        {
+            PostStatusMessage(JToken.FromObject(new EndpointInfoUpdateMessage
+            {
+                DeviceName = deviceNameFeedback?.StringValue ?? string.Empty
+            }));
+        }
+    }
+
+    public class EndpointInfoStateMessage : DeviceStateMessageBase
+    {
+        [JsonProperty("friendlyName")]
+        public string DeviceName { get; set; }
+    }
+
+    public class EndpointInfoUpdateMessage 
+    {
+        [JsonProperty("friendlyName")]
+        public string DeviceName { get; set; }
+    }
+}