Smart meters support MainWnd dialog (must be finished - mouse right click), test supports Poseidon RegisterReader

Refactor `ISmartReader` and related classes to support `SmartHeadsUni`. Remove redundant `IperlHeadsUni` references and introduce `SmartMeterFlyingStartMassCollection` functionality. Enhance regex-based head position extraction.

TBF/Rig/TestMethods/iPerlCommunication/iPerlHead/IperlHead.cs

@@ -14,6 +14,7 @@ using Sensus.iPerl.NfcHandler;
 using NHibernate;
 using Renci.SshNet;
 using System.Linq;
+using System.Text.RegularExpressions;
 using System.Xml;
 using System.Xml.Linq; // This line is correct and does not need to be changed.
 using System.Windows;
@@ -53,13 +54,38 @@ namespace TBF.Rig.TestMethods.iPerlCommunication.iPerlHead
         public iPerlHead.MeterType MeterType { get { return iperlHeadCfg.MeterType; } }
         public string CommInterface { get { return iperlHeadCfg.CommunicationInterface.ToDescription(); } }
 
+        
+        static int? ExtractPreferredNumber(string input)
+        {
+            if (string.IsNullOrEmpty(input))
+                return null;
+
+            // Match all sequences of digits
+            var matches = Regex.Matches(input, @"\d+");
+            if (matches.Count == 0)
+                return null;
+
+            // Prefer the last one if there are multiple
+            string selected = matches[matches.Count - 1].Value; // last element
+            return int.Parse(selected);
+        }
+        
+        /// <summary>
+        /// this is a hack to get the position from the name
+        /// name must consist only with digit describing order of the meter
+        /// </summary>
         public int Position
         {
             get
             {
-                int firstDigitPos = Name.IndexOfAny(new char[] { '1', '2', '3', '4', '5', '6', '7', '8', '9', '0' });
-                int position;
-                return (firstDigitPos < 0) ? 0 : (int.TryParse(Name.Substring(firstDigitPos), out position) ? position : 0);
+                //BUMI this is a hack to get the position from the name
+                // but it is not working for all cases !!!!!
+                // - what stupid prediction (what index should be used?? see: 'S4iPerl1' or ...)
+
+                int? extractPreferredNumber = ExtractPreferredNumber(Name);
+                if (extractPreferredNumber.HasValue)
+                    return extractPreferredNumber.Value;
+                return 0;
             }
         }
         public RegisterReaderType RegisterReaderType { get { return RegisterReaderType.DataStream; } }