Add NodeAlive event to the ZWaveNode class, and add lastSeen property to the NodeStatistics class. (#67)

* Add NodeAlive event to the ZWaveNode class, and add lastSeen property to the NodeStatistics class.

* Add lastSeen to the ZWaveNode and Statistics classes as DateTime?

Author: spudwebb

Visual Studio Projects/ZWaveJS.NET/ZWaveJS.NET/Driver.cs

@@ -194,6 +194,17 @@ private void MapNodeEvents()
                 });
             });
 
+            NodeEventMap.Add("alive", (JO) =>
+            {
+                int NID = JO.SelectToken("event.nodeId").ToObject<int>();
+                ZWaveNode N = this.Controller.Nodes.Get(NID);
+
+                Task.Run(() =>
+                {
+                    N.Trigger_NodeAlive();
+                });
+            });
+
             NodeEventMap.Add("dead", (JO) =>
             {
                 int NID = JO.SelectToken("event.nodeId").ToObject<int>();

Visual Studio Projects/ZWaveJS.NET/ZWaveJS.NET/Statistics.cs

@@ -1,4 +1,6 @@
-namespace ZWaveJS.NET
+using System;
+
+namespace ZWaveJS.NET
 {
     public class NodeStatisticsUpdatedArgs : NodeStatistics
     {
@@ -27,6 +29,8 @@ internal NodeStatistics() { }
         public RouteStatisctics lwr { get; internal set; }
         [Newtonsoft.Json.JsonProperty]
         public RouteStatisctics nlwr { get; internal set; }
+        [Newtonsoft.Json.JsonProperty]
+        public DateTime? lastSeen { get; internal set; }
     }
 
     public class ControllerStatisticsUpdatedArgs : ControllerStatistics

Visual Studio Projects/ZWaveJS.NET/ZWaveJS.NET/ZWaveNode.cs

@@ -80,6 +80,14 @@ internal void Trigger_Notification(int CCID, JObject Args)
             Notification?.Invoke(this, CCID, Args);
         }
 
+        public delegate void NodeAliveEvent(ZWaveNode Node);
+        public event NodeAliveEvent NodeAlive;
+        internal void Trigger_NodeAlive()
+        {
+            this.status = Enums.NodeStatus.Alive;
+            NodeAlive?.Invoke(this);
+        }
+
         public delegate void NodeDeadEvent(ZWaveNode Node);
         public event NodeDeadEvent NodeDead;
         internal void Trigger_NodeDead()
@@ -834,6 +842,8 @@ public Task<CMDResult> WaitForWakeup()
         [Newtonsoft.Json.JsonProperty]
         public NodeStatistics statistics { get; internal set; }
         [Newtonsoft.Json.JsonProperty]
+        public DateTime? lastSeen { get; internal set; }
+        [Newtonsoft.Json.JsonProperty]
         public Protocols protocol { get; internal set; }
 
         [Newtonsoft.Json.JsonProperty(PropertyName = "nodeId")]