using System;
using System.IO;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UniFramework.Machine;
using YooAsset;

internal class FsmInitializePackage : IStateNode
{
    private StateMachine _machine;
    PatchOperationData data;
    void IStateNode.OnCreate(StateMachine machine)
    {
        _machine = machine;
    }
    void IStateNode.OnEnter()
    {
        data = (PatchOperationData)_machine.GetBlackboardValue("PatchOperationData");
        Debug.Log($"初始化{data.packageName}，下载路径：{GetHostServerURL(data.packageName)}");
        GameManager.Inst.StartCoroutine(InitPackage());
    }
    void IStateNode.OnUpdate()
    {
    }
    void IStateNode.OnExit()
    {
    }

    private IEnumerator InitPackage()
    {
        var playMode = data.playMode;
        var packageName = data.packageName;

        // 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)
        {
            // 注意：设置参数COPY_BUILDIN_PACKAGE_MANIFEST，可以初始化的时候拷贝内置清单到沙盒目录
            var buildinFileSystemParams = FileSystemParameters.CreateDefaultBuildinFileSystemParameters();
            buildinFileSystemParams.AddParameter(FileSystemParametersDefine.COPY_BUILDIN_PACKAGE_MANIFEST, true);
            string defaultHostServer = GetHostServerURL(packageName);
            string fallbackHostServer = GetHostServerURL(packageName);
            IRemoteServices remoteServices = new RemoteServices(defaultHostServer, fallbackHostServer);
            // 注意：设置参数INSTALL_CLEAR_MODE，可以解决覆盖安装的时候将拷贝的内置清单文件清理的问题。
            var cacheFileSystemParams = FileSystemParameters.CreateDefaultCacheFileSystemParameters(remoteServices);
            cacheFileSystemParams.AddParameter(FileSystemParametersDefine.INSTALL_CLEAR_MODE, EOverwriteInstallClearMode.None);

            var createParameters = new HostPlayModeParameters();
            createParameters.BuildinFileSystemParameters = packageName == "Preload" ? buildinFileSystemParams : null;
            createParameters.CacheFileSystemParameters = cacheFileSystemParams;
            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(packageName);
            string fallbackHostServer = GetHostServerURL(packageName);
            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)
        {
            MessageBox.Show()
                    .SetTitle(packageName)
                    .SetContent($"{initializationOperation.Error}")
                    .AddButton("退出", (box) => { Application.Quit(); });
        }
        else
        {
            _machine.ChangeState<FsmRequestPackageVersion>();
        }
    }

    /// <summary>
    /// 获取资源服务器地址
    /// </summary>
    public string GetHostServerURL(string packageName)
    {
        string hostServerIP = $"https://home.gtuantuan.online:9444/{Application.productName}";
        if (GameManager.Inst.ServerAddress != "" && GameManager.Inst.ServerAddress != null)
            hostServerIP = $"{GameManager.Inst.ServerAddress}/{Application.productName}";
        string appVersion = "v1";
#if UNITY_EDITOR
        if (UnityEditor.EditorUserBuildSettings.activeBuildTarget == UnityEditor.BuildTarget.Android)
            // return $"{hostServerIP}/CDN/Android/{packageName}/{appVersion}";
            return $"{hostServerIP}/CDN/PC/{packageName}/{appVersion}";
        else if (UnityEditor.EditorUserBuildSettings.activeBuildTarget == UnityEditor.BuildTarget.iOS)
            return $"{hostServerIP}/CDN/IPhone/{packageName}/{appVersion}";
        else if (UnityEditor.EditorUserBuildSettings.activeBuildTarget == UnityEditor.BuildTarget.WebGL)
            return $"{hostServerIP}/CDN/WebGL/{packageName}/{appVersion}";
        else
            return $"{hostServerIP}/CDN/PC/{packageName}/{appVersion}";
#else
        if (Application.platform == RuntimePlatform.Android)
            return $"{hostServerIP}/CDN/Android/{packageName}/{appVersion}";
        else if (Application.platform == RuntimePlatform.IPhonePlayer)
            return $"{hostServerIP}/CDN/IPhone/{packageName}/{appVersion}";
        else if (Application.platform == RuntimePlatform.WebGLPlayer)
            return $"{hostServerIP}/CDN/WebGL/{packageName}/{appVersion}";
        else
            return $"{hostServerIP}/CDN/PC/{packageName}/{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}";
        }
    }
}