feat: get it working

src/PepperDash.Essentials.Core/Web/RequestHandlers/GetTieLinesRequestHandler.cs

@@ -0,0 +1,34 @@
+using Crestron.SimplSharp.WebScripting;
+using Newtonsoft.Json;
+using PepperDash.Core.Web.RequestHandlers;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PepperDash.Essentials.Core.Web.RequestHandlers
+{
+    public class GetTieLinesRequestHandler:WebApiBaseRequestHandler
+    {
+        public GetTieLinesRequestHandler() : base(true) { }
+
+        protected override void HandleGet(HttpCwsContext context)
+        {
+            var tieLineString = JsonConvert.SerializeObject(TieLineCollection.Default.Select((tl) => new { 
+                sourceKey = tl.SourcePort.ParentDevice.Key,
+                sourcePort = tl.SourcePort.Key,
+                destinationKey = tl.DestinationPort.ParentDevice.Key,
+                destinationPort = tl.DestinationPort.Key
+            }));
+
+            context.Response.StatusCode = 200;
+            context.Response.StatusDescription = "OK";
+            context.Response.ContentType = "application/json";
+            context.Response.ContentEncoding = Encoding.UTF8;
+            context.Response.Write(tieLineString, false);
+            context.Response.End();
+
+        }
+    }
+}