using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Threading;
using Cysharp.Threading.Tasks;
using Stary.Evo.Unzip;
using UnityEngine;
using UnityEngine.Networking;
#if WEIXINMINIGAME
using WeChatWASM;
#endif

namespace Stary.Evo
{
    public class ZipTool
    {
        private static SemaphoreSlim unzipLock = new(1, 1);

        // 新增：带进度回调的下载解压方法
        public static async UniTask DownloadAndUnzipAsync(string fildId, string extractPath,
            Action<float> downloadProgress = null, Action<float> unzipProgress = null)
        {
            try
            {
                string url = $"{AppConfig.IpConfig}/FileLoad/Download/{fildId}";


#if !WEIXINMINIGAME
                string tempPath = Path.Combine(Application.persistentDataPath, "temp.zip");
                await WebRequestSystem.GetFile(url, tempPath, downloadProgress);
#else
                bool isCompleted = false;
                string tempPath = WX.env.USER_DATA_PATH + "/temp.zip"; // 指定保存路径
                var downloadTask = WX.DownloadFile(new DownloadFileOption()
                {
                    url = url,
                    filePath = WX.env.USER_DATA_PATH + "/temp.zip", // 指定保存路径
                    success = (res) => {
                        isCompleted = true;
                    },
                    fail = (err) => {
                        Debug.LogError("下载失败：" + err.errMsg);
                        isCompleted = true;
                    }
                });
                // 注册进度回调（关键代码）
                downloadTask.OnProgressUpdate((res) =>
                {
                    // res.progress: 下载进度 0-100
                    // res.totalBytesExpectedToWrite: 预期总字节数
                    // res.totalBytesWritten: 已下载字节数
                    downloadProgress?.Invoke((float) res.progress);
                    Debug.Log($"下载进度：{res.progress:F1}% | " +
                              $"已下载：{res.totalBytesWritten / 1024}KB / " +
                              $"总计：{res.totalBytesExpectedToWrite / 1024}KB");
                });
                // 等待完成或被取消
                await new WaitUntil(() => isCompleted);
                // 等待下载完成，同时可以更新 UI
                // while (!isCompleted)
                // {
                //     // 在这里更新 Unity UI 进度条
                //     UpdateProgressUI(currentProgress);
                //     yield return null;
                // }
                // WX.GetFileSystemManager().Unzip(new UnzipOption()
                // {
                //     zipFilePath = tempPath,
                //     targetPath = extractPath,
                //     success = (suc) =>
                //     {
                //         Debug.Log("解压成功");
                //         File.Delete(tempPath);
                //     },
                //     fail = (err) =>
                //     {
                //         Debug.LogError($"解压失败：{err.errMsg}");
                //     }
                // });
#endif

                // 解压下载的文件
                await CrossPlatformUnzip.UnzipAsync(tempPath, extractPath, unzipProgress);
            }
            catch (Exception ex)
            {
                Debug.LogError($"解压失败: {ex.Message}");
            }
        }

        // 修改：添加进度回调参数
        public static async UniTask UnzipAsync(string zipPath, string extractPath,
            Action<float> progressCallback = null)
        {
            try
            {
                // 验证路径安全性
                string fullExtractPath = Path.GetFullPath(extractPath);

                using (ZipArchive archive = ZipFile.OpenRead(zipPath))
                {
                    float totalEntries = archive.Entries.Count;
                    float processed = 0;

                    foreach (ZipArchiveEntry entry in archive.Entries)
                    {
                        // 安全检查：防止目录遍历
                        string filePath = Path.GetFullPath(Path.Combine(extractPath, entry.FullName));
                        if (!filePath.StartsWith(fullExtractPath))
                        {
                            Debug.LogWarning($"跳过不安全的文件路径: {entry.FullName}");
                            continue;
                        }

                        Directory.CreateDirectory(Path.GetDirectoryName(filePath));

                        if (!string.IsNullOrEmpty(entry.Name))
                        {
                            using (Stream inputStream = entry.Open())
                            using (FileStream outputStream = File.Create(filePath))
                            {
                                await inputStream.CopyToAsync(outputStream, 81920);
                            }
                        }

                        processed++;
                        float progress = processed / totalEntries;
                        progressCallback?.Invoke(progress);
                    }
                }

                Debug.Log($"解压完成: {extractPath}");
            }
            catch (Exception ex)
            {
                Debug.LogError($"解压失败: {ex.Message}");
                throw; // 重新抛出异常让调用方处理
            }
        }


        /// <summary>
        /// 自定义网络请求器需要登录
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        private static UnityWebRequest WebRequester(string url)
        {
            var request = new UnityWebRequest(url, UnityWebRequest.kHttpVerbGET);
            var authorization = GetAuthorization(AppConfig.UserName, AppConfig.PassWord);
            request.SetRequestHeader("AUTHORIZATION", authorization);
            return request;
        }

        private static string GetAuthorization(string userName, string password)
        {
            string auth = userName + ":" + password;
            var bytes = System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(auth);
            return "Basic " + System.Convert.ToBase64String(bytes);
        }
    }
}