Add logic for import of combination from xls files

StructureHelperCommon/Models/Forces/Logics/GetTupleByExcelReaderLogic.cs

@@ -0,0 +1,52 @@
+using ExcelDataReader;
+using StructureHelperCommon.Infrastructures.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Models.Forces
+{
+    public class GetTupleByExcelReaderLogic : IGetTupleByExcelReaderLogic
+    {
+        IFillTupleArrayByColumnNameLogic fillArrayLogic;
+
+        public GetTupleByExcelReaderLogic(IFillTupleArrayByColumnNameLogic fillArrayLogic)
+        {
+            this.fillArrayLogic = fillArrayLogic;
+        }
+
+        public GetTupleByExcelReaderLogic()
+        {
+            
+        }
+
+        public IShiftTraceLogger? TraceLogger { get; set; }
+        public IColumnedFileProperty ForceFileProperty { get; set; }
+
+        public IForceTuple GetForceTuple(IExcelDataReader? reader)
+        {
+            // Ensure ExcelDataReader's encoding provider is registered
+            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
+
+            double[] nDouble = new double[3];
+            foreach (var item in ForceFileProperty.ColumnProperties)
+            {
+                if (reader is null)
+                {
+                    throw new StructureHelperException(ErrorStrings.NullReference + $": reader value for column {item.Name} in file {ForceFileProperty.FilePath}");
+                }
+                var readerValue = reader.GetValue(item.Index);
+                var strValue = readerValue.ToString();
+                double factor = ForceFileProperty.GlobalFactor * item.Factor * 1000d;
+                var doubleValue = Convert.ToDouble(strValue) * factor;
+                fillArrayLogic ??= new FillTupleArrayByColumnNameLogic() { TraceLogger = TraceLogger };
+                fillArrayLogic.ProceeForceTupleArray(nDouble, doubleValue, item.Name, ForceFileProperty.FilePath);
+            }
+            TraceLogger?.AddMessage($"String values: Nz = {nDouble[0]}, Mx = {nDouble[1]}, My = {nDouble[2]} were gained", TraceLogStatuses.Debug);
+            ForceTuple newTuple = new() { Nz = nDouble[0], Mx = nDouble[1], My = nDouble[2] };
+            return newTuple;
+        }
+    }
+}