using Code.Scripts.HotUpdate.UI;
using Cysharp.Threading.Tasks;
using PhxhSDK.AOT;
using PhxhSDK.AOT.SimpleLoader;
using PhxhSDK.AOT.VersionUpdate;
using System;
using UnityEngine;
using UnityEngine.SceneManagement;

public class GameLauncher : MonoBehaviour
{
    const string START_SCENE_NAME = "Assets/Scenes/StartScene.unity";

    //最大能容忍的下载卡住时长，一旦超过则重新开始下载
    // private const float DOWNLOAD_STUCK_TIME_MAX = 10;

#if USE_HCLR
    private HybridCLRHelper _hybridCLRHelper;
#endif

    private VersionUpdateHandle _versionUpdateHandle;
    private ISimpleLoader _simpleLoader;
    private IVersionUpdateUI versionUpdateUI;

    public bool enableHotUpdate = true;

    private void Start()
    {
        Launch();
    }

    private async void Launch()
    {
#if UNITY_EDITOR
        enableHotUpdate = false;
#endif

#if USE_YOO
        await YooAssetHelper.Init();
        _simpleLoader = new SimpleLoader_YooAsset();
#else
        _simpleLoader = new SimpleLoader_Addressables();
#endif
        Debug.Log($"Launch Game! enableHotUpdate:{enableHotUpdate}");

        versionUpdateUI = new TempUIHandle();
        _versionUpdateHandle = new VersionUpdateHandle(versionUpdateUI);
        bool result = await _versionUpdateHandle.CheckUpdate();
        if (!result)
        {
            Debug.LogError("更新失败!,无法进入游戏");
            return;
        }

        if (enableHotUpdate)
        {
#if USE_HCLR
            Debug.Log("需要热更新,开始加载程序集");
            _hybridCLRHelper = new HybridCLRHelper();
            _hybridCLRHelper.SetDllList(AOTGenericReferences.PatchedAOTAssemblyList);
            _hybridCLRHelper.RegistLoader(_simpleLoader);

            await _hybridCLRHelper.LoadAssemblies();
            Debug.Log("加载程序集结束!");
#endif
        }

        await EnterGame();
    }

    private async UniTask EnterGame()
    {
        Debug.Log("开始加载游戏场景");
        SimulationProgress(versionUpdateUI.GetCurProgress());
        try
        {
            Scene scene = await _simpleLoader.LoadSceneAsync(START_SCENE_NAME, LoadSceneMode.Additive);
            foreach (GameObject go in scene.GetRootGameObjects())
            {
                if ("EventSystem".Equals(go.name))
                {
                    Destroy(go);
                    break;
                }
            }
        }
        catch (Exception e)
        {
            Debug.LogError(e);
        }
        finally
        {
            await LoadOver();
            Debug.Log("加载游戏场景结束");
        }
    }

    private async void SimulationProgress(float startProgress)
    {
        versionUpdateUI.UpdateProgressText("初始化游戏...");
        versionUpdateUI.UpdateProgress(startProgress);

        float step = (1f - startProgress) * 0.02f;
        while (startProgress + step <= 0.99f)
        {
            await UniTask.Delay(20);
            startProgress += step;
            versionUpdateUI.UpdateProgress(startProgress);
        }
    }

    private async UniTask LoadOver()
    {
        while (true)
        {
            await UniTask.Yield();
            // Debug.Log($"校验是否加载完:{IVersionUpdateUI.IsLoadOver}");
            if (IVersionUpdateUI.IsLoadOver)
            {
                versionUpdateUI.UpdateProgress(1f);
                versionUpdateUI.UpdateProgressText("完成");
                await UniTask.Delay(200);
                versionUpdateUI.CloseAll();
                return;
            }
        }
    }
}