refactor: move routing interfaces into their own files

src/PepperDash.Essentials.Core/Routing/RouteDescriptorCollection.cs

@@ -0,0 +1,123 @@
+using System.Collections.Generic;
+using System.Linq;
+
+using PepperDash.Core;
+using Serilog.Events;
+
+
+namespace PepperDash.Essentials.Core
+{
+    /// <summary>
+    /// A collection of RouteDescriptors - typically the static DefaultCollection is used
+    /// </summary>
+    public class RouteDescriptorCollection
+    {
+        public static RouteDescriptorCollection DefaultCollection
+        {
+            get
+            {
+                if (_DefaultCollection == null)
+                    _DefaultCollection = new RouteDescriptorCollection();
+                return _DefaultCollection;
+            }
+        }
+        private static RouteDescriptorCollection _DefaultCollection;
+
+        private readonly List<RouteDescriptor> RouteDescriptors = new List<RouteDescriptor>();
+
+        /// <summary>
+        /// Adds a RouteDescriptor to the list.  If an existing RouteDescriptor for the
+        /// destination exists already, it will not be added - in order to preserve
+        /// proper route releasing.
+        /// </summary>
+        /// <param name="descriptor"></param>
+        public void AddRouteDescriptor(RouteDescriptor descriptor)
+        {
+            if (RouteDescriptors.Any(t => t.Destination == descriptor.Destination))
+            {
+                Debug.LogMessage(LogEventLevel.Debug, descriptor.Destination,
+                    "Route to [{0}] already exists in global routes table", descriptor.Source.Key);
+                return;
+            }
+            RouteDescriptors.Add(descriptor);
+        }
+
+        /// <summary>
+        /// Gets the RouteDescriptor for a destination
+        /// </summary>
+        /// <returns>null if no RouteDescriptor for a destination exists</returns>
+        public RouteDescriptor GetRouteDescriptorForDestination(IRoutingInputs destination)
+        {
+            return RouteDescriptors.FirstOrDefault(rd => rd.Destination == destination);
+        }
+
+        /// <summary>
+        /// Returns the RouteDescriptor for a given destination AND removes it from collection.
+        /// Returns null if no route with the provided destination exists.
+        /// </summary>
+        public RouteDescriptor RemoveRouteDescriptor(IRoutingInputs destination)
+        {
+            var descr = GetRouteDescriptorForDestination(destination);
+            if (descr != null)
+                RouteDescriptors.Remove(descr);
+            return descr;
+        }
+    }
+
+    /*/// <summary>
+    /// A collection of RouteDescriptors - typically the static DefaultCollection is used
+    /// </summary>
+    public class RouteDescriptorCollection<TInputSelector, TOutputSelector>
+	{
+		public static RouteDescriptorCollection<TInputSelector, TOutputSelector> DefaultCollection
+		{
+			get
+			{
+				if (_DefaultCollection == null)
+					_DefaultCollection = new RouteDescriptorCollection<TInputSelector, TOutputSelector>();
+				return _DefaultCollection;
+			}
+		}
+		private static RouteDescriptorCollection<TInputSelector, TOutputSelector> _DefaultCollection;
+
+		private readonly List<RouteDescriptor> RouteDescriptors = new List<RouteDescriptor>();
+
+		/// <summary>
+		/// Adds a RouteDescriptor to the list.  If an existing RouteDescriptor for the
+		/// destination exists already, it will not be added - in order to preserve
+		/// proper route releasing.
+		/// </summary>
+		/// <param name="descriptor"></param>
+		public void AddRouteDescriptor(RouteDescriptor descriptor)
+		{
+			if (RouteDescriptors.Any(t => t.Destination == descriptor.Destination))
+			{
+				Debug.LogMessage(LogEventLevel.Debug, descriptor.Destination, 
+					"Route to [{0}] already exists in global routes table", descriptor.Source.Key);
+				return;
+			}
+			RouteDescriptors.Add(descriptor);
+		}
+
+		/// <summary>
+		/// Gets the RouteDescriptor for a destination
+		/// </summary>
+		/// <returns>null if no RouteDescriptor for a destination exists</returns>
+		public RouteDescriptor GetRouteDescriptorForDestination(IRoutingInputs<TInputSelector> destination)
+		{
+			return RouteDescriptors.FirstOrDefault(rd => rd.Destination == destination);
+		}
+
+		/// <summary>
+		/// Returns the RouteDescriptor for a given destination AND removes it from collection.
+		/// Returns null if no route with the provided destination exists.
+		/// </summary>
+		public RouteDescriptor RemoveRouteDescriptor(IRoutingInputs<TInputSelector> destination)
+		{
+			var descr = GetRouteDescriptorForDestination(destination);
+			if (descr != null)
+				RouteDescriptors.Remove(descr);
+			return descr;
+		}
+	}*/
+}