using System;
using System.IO;
using System.Linq;
using System.Reflection;

/*
 * Marble It Up! Ultra Mod Loader using UnityDoorstop
 * For more details about UnityDoorstop: https://github.com/NeighTools/UnityDoorstop
 *
 * The original mod loader for Marble It Up! Classic was written by Elomith. This mod loader uses that as a starting
 * point, and is largely the same thing with maybe a bit more error checking.
 */
namespace Doorstop
{
	class Entrypoint
	{
		public static void Start()
		{
			Log("MIUU Mod loader started");

			string assemblyDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
			string modsDirectory = Directory.GetParent(assemblyDirectory).FullName;

			foreach (string dir in Directory.GetDirectories(modsDirectory))
			{
				// Don't load ourselves again
				if (dir == assemblyDirectory)
					continue;

				Log("Loading mod directory: " + dir);

				foreach (string filename in Directory.GetFiles(dir))
				{
					if (filename.EndsWith(".dll"))
					{
						Log("Loading: " + filename);

						try
						{
							Assembly assembly = Assembly.LoadFrom(filename);
							Type entrypointType = assembly.GetTypes().FirstOrDefault((Type t) => t.Name == "PatchEntryPoint");

							if (entrypointType == null)
							{
								Log("Entrypoint type not found");
								continue;
							}

							MethodInfo entrypoint = entrypointType.GetMethod("Start", BindingFlags.Static | BindingFlags.Public);
							if (entrypoint == null)
							{
								Log("Start method not found");
								continue;
							}

							Log("Invoking entrypoint");
							entrypoint.Invoke(null, new object[0]);

							Log("Assembly successfully loaded");
						}
						catch (Exception e)
						{
							Log("Exception while loading " + filename + "!! " + e);
						}
					}
				}

				Log("Done loading mod");
			}
		}

		private static void Log(string message)
		{
			// I want this to show up in the Unity output log but I think it literally loads too early lol
			//Debug.Log("[MIUU MOD LOADER] " + message);

			// Maybe at least this will be useful?
			Console.WriteLine("[MIUU MOD LOADER] " + message);
		}
	}
}