using System.Collections.Generic;
using System.Reflection;
using System.IO;
using UnityEngine;
using UnityEditor;
using ModTool.Shared;

namespace ModTool.Editor
{
	internal class ExporterCreator
	{
		/// <summary>
		/// Create a mod exporter package for this game.
		/// </summary>
		[MenuItem("Tools/ModTool/Create Exporter", priority = 1)]
		public static void CreateExporter()
		{
			CreateExporter(Directory.GetCurrentDirectory(), true);
		}

		/// <summary>
		/// Create a mod exporter package after building the game.
		/// </summary>
		[UnityEditor.Callbacks.PostProcessBuild]
		public static void CreateExporterPostBuild(BuildTarget target, string pathToBuiltProject)
		{
			pathToBuiltProject = Path.GetDirectoryName(pathToBuiltProject);

			CreateExporter(pathToBuiltProject);
		}
		
		private static void CreateExporter(string path, bool revealPackage = false)
		{
			LogUtility.LogInfo("Creating Exporter");

			UpdateSettings();

			ModToolSettings modToolSettings = ModToolSettings.instance;
			CodeSettings codeSettings = CodeSettings.instance;

			string modToolDirectory = GetModToolDirectory();
			string exporterPath = Path.Combine(modToolDirectory, Path.Combine("Editor", "ModTool.Editor.Exporting.dll"));
			string fileName = Path.Combine(path, Application.productName + " Mod Tools.unitypackage");
			string projectSettingsDirectory = "ProjectSettings";

			List<string> assetPaths = new List<string>
			{
				AssetDatabase.GetAssetPath(modToolSettings),
				AssetDatabase.GetAssetPath(codeSettings),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Editor.Exporting", "Asset.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Editor.Exporting", "EditorModPlatformExtensions.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Editor.Exporting", "ExportData.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Editor.Exporting", "ExporterEditorWindow.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Editor.Exporting", "ExportSettings.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Editor.Exporting", "ExportSettingsEditor.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Editor.Exporting", "ExportStep.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Editor.Exporting", "FilteredEnumMaskField.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Editor.Exporting", "ModExporter.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Editor.Exporting", "PackageInstaller.cs")),

				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "AssemblyResolver.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "AssemblyUtility.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "AssemblyVerifier.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "CodeSettings.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "Extensions.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "LogUtility.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "ModContent.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "ModInfo.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "ModPlatform.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "ModToolSettings.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "Restriction.cs")),
				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "Singleton.cs")),

				Path.Combine(modToolDirectory, Path.Combine("ModTool.Shared", "IModHandler.cs")),

				Path.Combine(projectSettingsDirectory, "EditorBuildSettings.asset"),
				Path.Combine(projectSettingsDirectory, "InputManager.asset"),
				Path.Combine(projectSettingsDirectory, "TagManager.asset"),
				Path.Combine(projectSettingsDirectory, "Physics2DSettings.asset"),
				Path.Combine(projectSettingsDirectory, "DynamicsManager.asset"),
			};

			assetPaths.AddRange(ModToolSettings.sharedAssets);

			SetPluginEnabled(exporterPath, true);

			AssetDatabase.ExportPackage(assetPaths.ToArray(), fileName);
					   
			SetPluginEnabled(exporterPath, false);

			if(revealPackage)
				EditorUtility.RevealInFinder(fileName);
		}

		private static void SetPluginEnabled(string pluginPath, bool enabled)
		{
		//	PluginImporter pluginImporter = AssetImporter.GetAtPath(pluginPath) as PluginImporter;

		//	if (pluginImporter.GetCompatibleWithEditor() == enabled)
				return;

		//	pluginImporter.SetCompatibleWithEditor(enabled);
		//	pluginImporter.SaveAndReimport();
		}
			   
		private static void UpdateSettings()
		{
			if (string.IsNullOrEmpty(ModToolSettings.productName) || ModToolSettings.productName != Application.productName)
				typeof(ModToolSettings).GetField("_productName", BindingFlags.NonPublic | BindingFlags.Instance).SetValue(ModToolSettings.instance, Application.productName);

			if (string.IsNullOrEmpty(ModToolSettings.unityVersion) || ModToolSettings.unityVersion != Application.unityVersion)			
				typeof(ModToolSettings).GetField("_unityVersion", BindingFlags.NonPublic | BindingFlags.Instance).SetValue(ModToolSettings.instance, Application.unityVersion);

			EditorUtility.SetDirty(ModToolSettings.instance);
		}

		private static string GetModToolDirectory()
		{
			string modToolDirectory = Path.GetDirectoryName(typeof(ModInfo).Assembly.Location);

			return modToolDirectory.Substring(Application.dataPath.Length - 6);
		}
	}
}