using System;
using System.Linq;

namespace Xylem.Common.Logic.ProductionOrderCore.OrderData
{
    /// <summary>
    /// Conversion of scanned number to serial number
    /// </summary>
    public static class ScanToSerialNr
    {
        public static Boolean ConvertScanToSerialNr(String scan ,out Int32 internalSerialNr,out String customerSr)
        {
            customerSr = "";
            internalSerialNr = -1;
            try
            {
                const String prefix = "8SEN20";
                const Int32 length = 9;
              
                if (scan.Contains(","))
                {
                    customerSr =  scan.Substring(0, scan.IndexOf(",", StringComparison.Ordinal));
                }
         

                if (scan.StartsWith(prefix))
                {
                    scan = scan.Substring(prefix.Length, length);
                    if (!scan.EndsWith(","))
                    {
                        
                        throw new ApplicationException("Could not parse serial number");
                    }

                    scan = scan.TrimEnd(',');
                }

               
                if (int.TryParse(scan, out var ret))
                {
                    internalSerialNr = ret;
                    return true;
                }

                if (scan.Length == 11 && scan.StartsWith("10"))
                {
                    customerSr = scan.Substring(2, 9);
                    return true;
                }


                if (scan.Count( a => a == ',') == 2)
                {
                    customerSr = scan.Split(',')[1] + ',';// 0, scan.IndexOf(",", StringComparison.Ordinal));
                }

                if (customerSr.StartsWith(prefix))
                {
                    customerSr = customerSr.Substring(prefix.Length, length);
                    if (!customerSr.EndsWith(","))
                    {

                        throw new ApplicationException("Could not parse serial number");
                    }

                    customerSr = customerSr.TrimEnd(',');
                }


                if (int.TryParse(customerSr, out var retCustom))
                {
                    if (retCustom.ToString().Length == "18795584".Length)
                    {
                        internalSerialNr = retCustom;
                    }
                 
                    
                    return true;
                }

                if (scan.Replace(" ", "").Length == 12)
                {
                    customerSr = scan.Replace(" ", "");
                }
                throw new ApplicationException("Could not parse serial number");

            }
            catch (Exception )
            {
          
                return false;
            }
        }
 
    }
}