using System;
using System.Collections;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Drawing.Printing;
using System.Text;
using BITKit.IO;
using Cysharp.Threading.Tasks;
using UnityEngine;
using YooAsset;

// ReSharper disable SuspiciousTypeConversion.Global

namespace BITKit.Mod
{
	
	public class UnityModLoader : MonoBehaviour
	{
		private static readonly ConcurrentDictionary<string,IMod> _mods=new();
		private static readonly ConcurrentDictionary<string,ResourcePackage> _packages=new();
		private void OnEnable()
		{
			ModService.OnModLoadAsync += OnModLoadAsync;
			ModService.OnModUnloadAsync += OnModUnloadAsync;
		}
		private void OnDisable()
		{
			ModService.OnModLoadAsync -= OnModLoadAsync;
			ModService.OnModUnloadAsync -= OnModUnloadAsync;
		}

		private void OnDestroy()
		{
			_mods.Clear();
			_packages.Clear();
		}

		private async UniTask OnModUnloadAsync(IMod mod)
		{
			switch (mod)
			{
				case IAssetMod:
					_packages.TryRemove(mod.PackageName,out var package);
					package.ClearPackageSandbox();
					await package.ClearAllCacheFilesAsync();
					await package.ClearUnusedCacheFilesAsync();
					YooAssets.DestroyPackage(mod.PackageName);
					YooAssetUtils.UnregisterPackage(mod.PackageName);
					YooAssetUtils.UnregisterResourcePackage(_packages[mod.PackageName]);
					
					break;
			}
		}

		private async UniTask OnModLoadAsync(IMod arg)
		{
			try
			{
				switch (arg)
				{
					case IAssetMod:
						var package = YooAssets.CreatePackage(arg.PackageName);
						
					

						var defaultHostServer = new RemoteServices(
							arg.FolderPath, arg.FolderPath)
						{

						};
						var queryServices = new LocalQueryServices(arg.PackageName);

						var initParameters = new HostPlayModeParameters
						{
							BuildinQueryServices = queryServices,
							RemoteServices = defaultHostServer
						};
						var initOperation = package.InitializeAsync(initParameters);
						await initOperation;
						
						if(initOperation.Status!=EOperationStatus.Succeed)
						{
							throw new Exception(initOperation.Error);
						}
						
						var updateOperation = package.UpdatePackageVersionAsync(false);
						await updateOperation;

						if (updateOperation.Status != EOperationStatus.Succeed)
						{
							throw new Exception(updateOperation.Error);
						}


						var updateManifestOperation = package.UpdatePackageManifestAsync(updateOperation.PackageVersion, false);
						await updateManifestOperation;
						if(updateManifestOperation.Status!=EOperationStatus.Succeed)
						{
							throw new Exception(updateManifestOperation.Error);
						}
						
						var downloader = package.CreateResourceDownloader(8, 0);

						downloader.BeginDownload();

						await downloader;

						if (downloader.Status != EOperationStatus.Succeed)
						{
							throw new Exception(downloader.Error);
						}


							_packages.TryAdd(arg.PackageName, package);
							YooAssetUtils.RegisterResourcePackage(package);
							YooAssetUtils.RegisterPackage(arg.PackageName);


							// var logBuilder = new StringBuilder();
							// logBuilder.AppendLine("该包中的资源：");
							// foreach (var x in package.GetAssetInfos(arg.Tags))
							// {
							// 	logBuilder.AppendLine(x.Address);
							// }
							// logBuilder.AppendLine("默认包中的资源");
							// foreach (var x in YooAssets.GetAssetInfos(arg.Tags))
							// {
							// 	logBuilder.AppendLine(x.Address);
							// }
							// BIT4Log.Log<UnityModLoadAssetTester>(logBuilder.ToString());

							BIT4Log.Log<UnityModLoader>($"<color=green>资源包{arg.PackageName}初始化成功</color>");
						break;
				}
			}
			catch (Exception e)
			{
				BIT4Log.LogException(e);
			}

		}

		
	
	}

}