using ShellLinkPlus;
using System;
using System.IO;
using System.Linq;

namespace SetLnkApp
{
    class Program
    {
        static void Main(string[] args)
        {
            bool existing = File.Exists(args[0]);
            using (ShellLink shortcut = new ShellLink(existing ? args[0] : null))
            {
                if (existing)
                {
                    if (args.Length > 2)
                    {
                        throw new Exception("For an existing shortcut, only pass AppUserModelId");
                    }
                }
                else
                {
                    shortcut.TargetPath = args[2];
                    //shortcut.Arguments = args.Length > 3 ? string.Join(" ", args.Skip(3)) : "";
                    shortcut.Arguments = string.Join(" ", args.Skip(3));
                }
                shortcut.AppUserModelID = args[1];

                shortcut.Save(args[0]);
            }
        }
    }
}