using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace Tango.FSE.Procedures.Helpers
{
    public static class ProcedureExceptionHelper
    {
        public static int? GetExceptionLineNumber(Exception ex, ProcedureProject project)
        {
            try
            {
                Regex regex = new Regex(@"OnExecute\(IProcedureContext context\) in :line (\d+)");
                var matches = regex.Matches(ex.ToString()).OfType<Match>().ToList();

                if (matches.Count > 0)
                {
                    var match = matches.First();

                    if (match.Groups.Count > 1)
                    {
                        var line = match.Groups[1].Value;
                        int lineNumber = int.Parse(line) - project.Scripts.Count + 1;
                        return lineNumber;
                    }
                }
            }
            catch { }

            return null;
        }
    }
}