adding IDivisionResolver

EDILibrary/Interfaces/IDivisionResolver.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using EDILibrary.Helper;
+
+namespace EDILibrary.Interfaces
+{
+    /// <summary>
+    /// An interface that allows to determine the <see cref="BO4E.ENUM.Sparte"/> ("division") of a market partner.
+    /// </summary>
+    /// <remarks>
+    /// The classes implementing this interface might be hardcoded mappings to start with;
+    /// But in the future™ there might be another market partner service that holds this information.
+    /// </remarks>
+    public interface IDivisionResolver
+    {
+        /// <summary>
+        /// Determine the sparte that is relevant for a message which has  <paramref name="senderMarketPartnerId"/> as sender and <paramref name="receiverMarketPartnerId"/> as receiver.
+        /// </summary>
+        /// <param name="senderMarketPartnerId">the 13 digit market partner ID of the sending marktpartner</param>
+        /// <param name="receiverMarketPartnerId">the 13 digit market partner ID of the sending marktpartner</param>
+        /// <returns>the sparte</returns>
+        public Sparte GetSparte(
+            string? senderMarketPartnerId,
+            string? receiverMarketPartnerId
+        );
+    }
+}