using System;

using CommandLine;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        //when I change LINE_NUMBER value from 1 KEEP_ALIVE_OPTION is recognized somehow

        var args = new string[] {"/SCRIPT_NAME=DEALER_TRACK_KEEP_ALIVE", "/OEM_FAMILY=GM", "/COMPLAINT_CODE=\"0131\"", "/OUT_DIR=C:\\\\Applications\\\\DataFiles\\\\", "/KEEP_ALIVE_OPTION=1", "/STORY=\"Lorem ipsum #UPDATE#dolor sit amet\"", "/DEALER_TRACK_LOGIN_URL=https://blah", 

                                 "/DEALER_TRACK_UserID=myId", "/DEALER_TRACK_Password=myPwd12", "/DEALER_TRACK_ADVISOR_PASSWORD=\"asd\"", "/DEALER_TRACK_COMPANY_NUMBER=\"TT\"", "/RO_NUMBER=3464990", "/LINE_NUMBER=1", "/CAUSAL_PART_NUMBER=\"11546959:SL-N-BOLT (00293-CKT)\""};

        new ScriptFactory().GetScriptData(args);

        Console.WriteLine("Hello World");

    }

}

​

public class ScriptFactory

{

    public KeyValuePair<Type, IScriptOptions> GetScriptData(string[] args)

    {

        string scriptName = args[0].Split('=')[1];

        IScriptOptions options = default;

​

​

        ParserResult<DTKeepAliveOptions> parseRes = Parse<DTKeepAliveOptions>(args)

            .WithParsed(keepAliveOptions => Console.WriteLine("success"))

            .WithNotParsed(errs => HandleParseError(typeof(DTKeepAlive), errs));

​

        return new KeyValuePair<Type, IScriptOptions>(typeof(DTKeepAlive), options);

    }

​

    public ParserResult<T> Parse<T>(string[] args) where T : IScriptOptions

    {

        Parser parser = new(s =>

                            {

                                s.CaseSensitive = false;

                                s.IgnoreUnknownArguments = true;

                                s.HelpWriter = Parser.Default.Settings.HelpWriter;

                            });

​

        var scriptOptions = new List<string>();

​

        for (int i = 0; i < args.Length; i++)

        {

            //1st element is a script name;

            if (i > 0 && !args[i].EndsWith('='))

            {

                //do not add to scriptOptions with no value

                string option = $"--{args[i].TrimStart('/')}";

​

                scriptOptions.Add(option);

            }

        }

​

        return parser.ParseArguments<T>(scriptOptions);

    }

​

    private void HandleParseError(Type scriptType, IEnumerable<Error> errors)

    {

        var namedErrs = errors.Cast<NamedError>();

        string exceptionText = string.Empty;

        string errorParamsString = string.Empty;

​

        var missedParamsNames = namedErrs.Where(e => e.Tag == ErrorType.MissingRequiredOptionError);

​

        if (missedParamsNames.Any())

        {

            foreach (var err in missedParamsNames)

            {

                errorParamsString += err.NameInfo.NameText + " ";

            }

​

            exceptionText = $"Missed required parameter(s) {errorParamsString}for the {scriptType.Name} script";

        }

        else

        {

            foreach (var err in namedErrs)

            {

                errorParamsString += err.NameInfo.NameText + " ";

            }

​

            exceptionText = $"Error in parameters {errorParamsString} for the {scriptType.Name} script";

        }

​

        throw new Exception(exceptionText);

    }

}

​

​

public class DTLoginOptions

    {

        [Option(Required = true)]

        public string DEALER_TRACK_LOGIN_URL { get; set; }

        [Option(Required = true)]

        public string DEALER_TRACK_ADVISOR_PASSWORD { get; set; }

        [Option(Required = true)]

        public string DEALER_TRACK_COMPANY_NUMBER { get; set; }

        [Option(Required = true)]

        public string OUT_DIR { get; set; }

        [Option(Required = true)]

        public string DEALER_TRACK_UserID { get; set; }

        [Option(Required = true)]

        public string DEALER_TRACK_Password { get; set; }

    }

​

public class DTKeepAliveOptions : DTLoginOptions, IScriptOptions

    {

        [Option(Required = true)]

        public string KEEP_ALIVE_OPTION { get; set; }

    }

public interface IScriptOptions

    {

    }

​

public class DTKeepAlive {}