using System;
using System.Collections;
using UnityEngine;
using YooAsset;

public class Init : MonoBehaviour
{
    /// <summary>
    /// 资源系统运行模式
    /// </summary>
    public EPlayMode PlayMode = EPlayMode.EditorSimulateMode;
    public string PackageName = "DefaultPackage";
    public string SceneName;

    void Awake()
    {
        Debug.Log($"资源系统运行模式：{PlayMode}");
        Application.targetFrameRate = 60;
        Application.runInBackground = true;
        DontDestroyOnLoad(this.gameObject);
    }

    IEnumerator Start()
    {
        // 初始化资源系统
        YooAssets.Initialize();

        // 加载更新页面
        var go = Resources.Load<GameObject>("PatchWindow");
        GameObject.Instantiate(go);

        yield return StartCoroutine(InitPackage());

        // 设置默认的资源包
        var gamePackage = YooAssets.GetPackage(PackageName);
        YooAssets.SetDefaultPackage(gamePackage);

        yield return new WaitForSeconds(1);
        // 切换到主页面场景
    }

    private void Update()
    {
        if (Input.GetKeyDown(KeyCode.A))
        {
            YooAssets.LoadSceneSync(SceneName);
        }
    }


    private IEnumerator InitPackage()
    {

        // 创建资源包裹类
        var package = YooAssets.TryGetPackage(PackageName);
        if (package == null)
            package = YooAssets.CreatePackage(PackageName);

        // 编辑器下的模拟模式
        InitializationOperation initializationOperation = null;
        if (PlayMode == EPlayMode.EditorSimulateMode)
        {
            var buildResult = EditorSimulateModeHelper.SimulateBuild(PackageName);
            var packageRoot = buildResult.PackageRootDirectory;
            var createParameters = new EditorSimulateModeParameters();
            createParameters.EditorFileSystemParameters = FileSystemParameters.CreateDefaultEditorFileSystemParameters(packageRoot);
            initializationOperation = package.InitializeAsync(createParameters);
        }

        // 单机运行模式
        if (PlayMode == EPlayMode.OfflinePlayMode)
        {
            var createParameters = new OfflinePlayModeParameters();
            createParameters.BuildinFileSystemParameters = FileSystemParameters.CreateDefaultBuildinFileSystemParameters();
            initializationOperation = package.InitializeAsync(createParameters);
        }

        // 联机运行模式
        if (PlayMode == EPlayMode.HostPlayMode)
        {
            string defaultHostServer = GetHostServerURL();
            string fallbackHostServer = GetHostServerURL();
            IRemoteServices remoteServices = new RemoteServices(defaultHostServer, fallbackHostServer);
            var createParameters = new HostPlayModeParameters();
            createParameters.BuildinFileSystemParameters = FileSystemParameters.CreateDefaultBuildinFileSystemParameters();
            createParameters.CacheFileSystemParameters = FileSystemParameters.CreateDefaultCacheFileSystemParameters(remoteServices);
            initializationOperation = package.InitializeAsync(createParameters);
        }

        // WebGL运行模式
        if (PlayMode == EPlayMode.WebPlayMode)
        {
#if UNITY_WEBGL && WEIXINMINIGAME && !UNITY_EDITOR
            var createParameters = new WebPlayModeParameters();
			string defaultHostServer = GetHostServerURL();
            string fallbackHostServer = GetHostServerURL();
            string packageRoot = $"{WeChatWASM.WX.env.USER_DATA_PATH}/__GAME_FILE_CACHE"; //注意：如果有子目录，请修改此处！
            IRemoteServices remoteServices = new RemoteServices(defaultHostServer, fallbackHostServer);
            createParameters.WebServerFileSystemParameters = WechatFileSystemCreater.CreateFileSystemParameters(packageRoot, remoteServices);
            initializationOperation = package.InitializeAsync(createParameters);
#else
            var createParameters = new WebPlayModeParameters();
            createParameters.WebServerFileSystemParameters = FileSystemParameters.CreateDefaultWebServerFileSystemParameters();
            initializationOperation = package.InitializeAsync(createParameters);
#endif
        }

        yield return initializationOperation;

        // 如果初始化失败弹出提示界面
        if (initializationOperation.Status != EOperationStatus.Succeed)
        {
            Debug.LogError($"{initializationOperation.Error}");
        }
        else
        {
            // 2. 请求资源清单的版本信息
            var operation =package.RequestPackageVersionAsync();
            yield return operation;
            if (operation.Status != EOperationStatus.Succeed)
                yield break;
    
            // 3. 传入的版本信息更新资源清单
            var packageVersion = package.GetPackageVersion();
            var operation1 =package.UpdatePackageManifestAsync(packageVersion);
            yield return operation1;
            if (operation1.Status != EOperationStatus.Succeed)
                yield break;
            Debug.Log("init finish");
        }
    }

    /// <summary>
    /// 获取资源服务器地址
    /// </summary>
    private string GetHostServerURL()
    {
        //string hostServerIP = "http://10.0.2.2"; //安卓模拟器地址
        string hostServerIP = "http://127.0.0.1";
        string appVersion = "v1.0";

#if UNITY_EDITOR
        if (UnityEditor.EditorUserBuildSettings.activeBuildTarget == UnityEditor.BuildTarget.Android)
            return $"{hostServerIP}/CDN/Android/{appVersion}";
        else if (UnityEditor.EditorUserBuildSettings.activeBuildTarget == UnityEditor.BuildTarget.iOS)
            return $"{hostServerIP}/CDN/IPhone/{appVersion}";
        else if (UnityEditor.EditorUserBuildSettings.activeBuildTarget == UnityEditor.BuildTarget.WebGL)
            return $"{hostServerIP}/CDN/WebGL/{appVersion}";
        else
            return $"{hostServerIP}/CDN/PC/{appVersion}";
#else
        if (Application.platform == RuntimePlatform.Android)
            return $"{hostServerIP}/CDN/Android/{appVersion}";
        else if (Application.platform == RuntimePlatform.IPhonePlayer)
            return $"{hostServerIP}/CDN/IPhone/{appVersion}";
        else if (Application.platform == RuntimePlatform.WebGLPlayer)
            return $"{hostServerIP}/CDN/WebGL/{appVersion}";
        else
            return $"{hostServerIP}/CDN/PC/{appVersion}";
#endif
    }

    /// <summary>
    /// 远端资源地址查询服务类
    /// </summary>
    private class RemoteServices : IRemoteServices
    {
        private readonly string _defaultHostServer;
        private readonly string _fallbackHostServer;

        public RemoteServices(string defaultHostServer, string fallbackHostServer)
        {
            _defaultHostServer = defaultHostServer;
            _fallbackHostServer = fallbackHostServer;
        }
        string IRemoteServices.GetRemoteMainURL(string fileName)
        {
            return $"{_defaultHostServer}/{fileName}";
        }
        string IRemoteServices.GetRemoteFallbackURL(string fileName)
        {
            return $"{_fallbackHostServer}/{fileName}";
        }
    }
}