R3 processor

WebAPI/dataProcessors/ProcessHelper.cs

@@ -1,4 +1,5 @@
-using WebAPI.Models;
+using System.Text.RegularExpressions;
+using WebAPI.Models;
 
 namespace DiunaBIWebAPI.dataProcessors;
 
@@ -172,4 +173,40 @@ public static class ProcessHelper
         }
         return codesList;
     }
+    public static string? ExtractMonthFromLayerName(string layerName)
+    {
+        string pattern = @"L\d+-P-\d{4}/(\d{2})-";
+        var match = Regex.Match(layerName, pattern);
+        if (match.Success && match.Groups.Count > 1)
+        {
+            return match.Groups[1].Value;
+        }
+        return null;
+    }
+
+    public static string GetSheetName(int month, int year)
+    {
+        if (month < 1 || month > 12)
+        {
+            throw new ArgumentOutOfRangeException(nameof(month), "Month must be between 1 and 12.");
+        }
+
+        var polishMonths = new[]
+        {
+            "Styczen",    
+            "Luty",       
+            "Marzec",
+            "Kwiecien",
+            "Maj",
+            "Czerwiec",
+            "Lipiec",
+            "Sierpien",
+            "Wrzesien",
+            "Pazdziernik",
+            "Listopad",
+            "Grudzien"
+        };
+        var monthName = polishMonths[month - 1];
+        return $"{monthName}_{year}";
+    }
 }