// See https://aka.ms/new-console-template for more information
using System.Reflection;


namespace dopt.TOM.Integration
{
    internal class Program
    {
        static internal bool atRuntime = true;
        static void Main(string[] args)
        {
            string id = "345";
            string filename = "Dummy_Dataset_N_1000.csv";

            int idx = 0;
            int? idxID, idxDyn;
            idxID = null; idxDyn = null;
            foreach (string arg in args)
            {
                // ID
                if (arg == "-id") idxID = idx + 1;
                if (idxID != null && idxID == idx) id = arg;
                // dynamic loading
                if (arg == "-dyn") idxDyn = idx + 1;
                if (idxDyn != null && idxDyn == idx) atRuntime = Convert.ToBoolean(arg);

                idx++;
            }

            if (atRuntime) dynamicBind(id, filename);
            else directBind(id, filename);
            Console.WriteLine("-----------------------------------------------------");
            var key = Console.ReadLine();
            Console.WriteLine(key);
        }

        static void directBind(string id, string filename)
        {
            Console.WriteLine("Test for static binding at buildtime...");
            var plugin = new Plugin("");
            Console.WriteLine("First invocation...");
            plugin.RunOnCSV(id, filename);
            //Console.WriteLine("Second invocation...");
            //plugin.RunOnCSV(id, filename);
        }
        static void dynamicBind(string id, string filename)
        {
            Console.WriteLine("Test for dynamic loading at runtime...");
            // correct DLL path
            string relPathToDll = @".\dopt.TOM.dll";
            Type currentType = typeof(Program);
            Assembly assemblySelf = currentType.Assembly;
            Console.WriteLine($"Location:\n{assemblySelf.Location}");
            string assemPath = assemblySelf.Location;
            if (assemPath.StartsWith("file:///"))
            {
                assemPath = assemPath.Replace("file:///", "");
            }
            string exeDir = System.IO.Path.GetDirectoryName(assemPath);
            string pathToDll = Path.Combine(exeDir, relPathToDll);
            // load type and execute method
            Assembly pluginDll = Assembly.LoadFrom(pathToDll);
            Type Plugin = pluginDll.GetType("dopt.TOM.Plugin");
            object instance = Activator.CreateInstance(Plugin, "");
            MethodInfo[] methods = Plugin.GetMethods();

            Console.WriteLine("Available methods are:");
            foreach (MethodInfo method in methods)
            {
                Console.WriteLine(method.Name);
            }

            Console.WriteLine($"Trying to invoke: {methods[0]}");
            object[] parameters = { id, filename };
            Console.WriteLine("First invocation...");
            methods[0].Invoke(instance, parameters);
            //Console.WriteLine("Second invocation...");
            //methods[0].Invoke(instance, parameters);
        }
    }
}