feat: cleans up code, adds versiport comment, changes ShowEmergencyMessage arg name to "url"

src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IEmergencyOSD.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
+{
+    public interface IEmergencyOSD
+    {
+        void ShowEmergencyMessage(string url);
+        void HideEmergencyMessage();
+    }
+}

src/PepperDash.Essentials.Core/Room/Config/EssentialsRoomConfig.cs

@@ -24,6 +24,7 @@ namespace PepperDash.Essentials.Room.Config
                 //switch on emergency type here.  Right now only contact and shutdown
                 var e = new EssentialsRoomEmergencyContactClosure(room.Key + "-emergency", props.Emergency, room);
                 DeviceManager.AddDevice(e);
+                return e;
             }
             return null;
         }

src/PepperDash.Essentials.Core/Room/Config/EssentialsRoomEmergencyConfig.cs

@@ -16,7 +16,7 @@
     public class EssentialsRoomEmergencyTriggerConfig
     {
         /// <summary>
-        /// contact,
+        /// contact,versiport
         /// </summary>
         public string Type { get; set; }
         /// <summary>

src/PepperDash.Essentials.Core/Room/EsentialsRoomEmergencyContactClosure.cs

@@ -4,12 +4,16 @@ using PepperDash.Essentials.Room.Config;
 
 namespace PepperDash.Essentials.Core
 {
-    public class EssentialsRoomEmergencyContactClosure : EssentialsRoomEmergencyBase
+    public class EssentialsRoomEmergencyContactClosure : EssentialsRoomEmergencyBase, IEssentialsRoomEmergency
     {
+        public event EventHandler<EventArgs> EmergencyStateChange;
+
         IEssentialsRoom Room;
         string Behavior;
         bool TriggerOnClose;
 
+        public bool InEmergency { get; private set; }
+
         public EssentialsRoomEmergencyContactClosure(string key, EssentialsRoomEmergencyConfig config, IEssentialsRoom room) :
             base(key)
         {
@@ -25,14 +29,49 @@ namespace PepperDash.Essentials.Core
                     cs.DigitalInputPorts[portNum].StateChange += EsentialsRoomEmergencyContactClosure_StateChange;
                 }
             }
+            else if (config.Trigger.Type.Equals("versiport", StringComparison.OrdinalIgnoreCase))
+            {
+                var portNum = (uint)config.Trigger.Number;
+                if (portNum <= cs.NumberOfVersiPorts)
+                {
+                    cs.VersiPorts[portNum].Register();
+                    cs.VersiPorts[portNum].SetVersiportConfiguration(eVersiportConfiguration.DigitalInput);
+                    cs.VersiPorts[portNum].DisablePullUpResistor = true;
+                    cs.VersiPorts[portNum].VersiportChange += EssentialsRoomEmergencyContactClosure_VersiportChange;
+                }
+            }
             Behavior = config.Behavior;
             TriggerOnClose = config.Trigger.TriggerOnClose;
         }
 
+        private void EssentialsRoomEmergencyContactClosure_VersiportChange(Versiport port, VersiportEventArgs args)
+        {
+            if (args.Event == eVersiportEvent.DigitalInChange)
+            {
+                ContactClosure_StateChange(port.DigitalIn);
+            }
+        }
+
         void EsentialsRoomEmergencyContactClosure_StateChange(DigitalInput digitalInput, DigitalInputEventArgs args)
         {
-            if (args.State && TriggerOnClose || !args.State && !TriggerOnClose)
+            ContactClosure_StateChange(args.State);
+        }
+
+        void ContactClosure_StateChange(bool portState)
+        {
+            if (portState && TriggerOnClose || !portState && !TriggerOnClose)
+            {
+                InEmergency = true;
+                if (EmergencyStateChange != null)
+                    EmergencyStateChange(this, new EventArgs());
                 RunEmergencyBehavior();
+            }
+            else
+            {
+                InEmergency = false;
+                if (EmergencyStateChange != null)
+                    EmergencyStateChange(this, new EventArgs());
+            }
         }
 
         /// <summary>
@@ -44,4 +83,14 @@ namespace PepperDash.Essentials.Core
                 Room.Shutdown();
         }
     }
+
+    /// <summary>
+    /// Describes the functionality of a room emergency contact closure
+    /// </summary>
+    public interface IEssentialsRoomEmergency
+    {
+        event EventHandler<EventArgs> EmergencyStateChange;
+
+        bool InEmergency { get; }
+    }
 }