using DS.Module.Core;
using DS.Module.SqlSugar;
using DS.Module.UserModule;
using DS.WMS.Core.Sys.Dtos;
using DS.WMS.Core.Sys.Entity;
using DS.WMS.Core.Sys.Interface;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using NLog;
using NPOI.HPSF;
using NPOI.SS.Formula.Functions;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace DS.WMS.Core.Sys.Method
{
    public class SysFileService : ISysFileService
    {
        private readonly IServiceProvider _serviceProvider;
        private readonly ISqlSugarClient db;
        private readonly IUser user; 
        private readonly IWebHostEnvironment _environment;
        private static readonly NLog.Logger Logger = LogManager.GetCurrentClassLogger();

        /// <summary>
        ///
        /// </summary>
        /// <param name="serviceProvider"></param>
        public SysFileService(IServiceProvider serviceProvider)
        {
            _serviceProvider = serviceProvider;
            db = _serviceProvider.GetRequiredService<ISqlSugarClient>();
            user = _serviceProvider.GetRequiredService<IUser>(); 
            _environment = _serviceProvider.GetRequiredService<IWebHostEnvironment>();
        }

        /// <summary>
        /// 添加系统附件
        /// </summary>
        /// <param name="file"></param>
        /// <param name="req"></param>
        /// <returns></returns>
        public async Task<DataResult<string>> AddFile(IFormFile file, [FromForm] SysFileReq req)
        { 
            //未上传文件
            if (file == null || file.Length == 0)
            {
                return await Task.FromResult(DataResult<string>.Failed("附件不存在!"));
            }

            var limitFiles = AppSetting.app(new string[] { "FileSettings", "FileType" });
            var originalFilename = file.FileName; // 文件原始名称
            var fileSuffix = Path.GetExtension(file.FileName).ToLower(); // 文件后缀
            if (!limitFiles.Contains(fileSuffix))
            {
                return await Task.FromResult(DataResult<string>.Failed("不允许的文件类型!"));
            }
            var basePath = AppSetting.app(new string[] { "FileSettings", "BasePath" });
            var relativePath = AppSetting.app(new string[] { "FileSettings", "RelativePath" });
            var dirAbs = string.Empty;
            var fileRelaPath = string.Empty;
            var fileAbsPath = string.Empty;
            if (string.IsNullOrEmpty(basePath))
            {
                dirAbs = Path.Combine(_environment.WebRootPath, relativePath);
            }
            else
            {
                dirAbs = Path.Combine(basePath, relativePath);
            }

            if (!Directory.Exists(dirAbs))
                Directory.CreateDirectory(dirAbs);


            // 先存库获取Id
            var id = SnowFlakeSingle.Instance.NextId();
            var fileSaveName = $"{id}{fileSuffix}".ToLower();
            fileRelaPath = Path.Combine(relativePath, fileSaveName).ToLower();
            fileAbsPath = Path.Combine(dirAbs, fileSaveName).ToLower();
            var newFile = new SysFile
            {
                Id = id,
                FileName = originalFilename,
                FilePath = fileRelaPath,
                TypeCode = req.TypeCode,
                TypeName = req.TypeName,
                LinkId = req.LinkId,

            };
            await db.Insertable(newFile).ExecuteCommandAsync();

            using (var stream = File.Create(fileAbsPath))
            {
                await file.CopyToAsync(stream);
            }

            return await Task.FromResult(DataResult<string>.Success(fileRelaPath));
        }
        /// <summary>
        /// 获取系统附件
        /// </summary>
        /// <param name="id">业务id</param>
        /// <returns></returns>
        public DataResult<List<SysFileRes>> GetSysFileList(string id)
        { 

            var data = db.Queryable<SysFile>()
            .Where(a => a.LinkId == long.Parse(id))
            .Select<SysFileRes>()
            .ToList();
            return DataResult<List<SysFileRes>>.Success(data, MultiLanguageConst.DataQuerySuccess);
        }

        /// <summary>
        /// 保存文件并返回文件完整路径
        /// </summary>
        /// <param name="fileDictKey">文件目录KEY</param>
        /// <param name="fileBytes">文件二进制流</param>
        /// <param name="batchNo">批次号</param>
        /// <param name="fileName">文件名称</param>
        /// <param name="attachFileType">附件类型</param>
        /// <returns>item1-文件绝对路径 item2-新文件名 item3-原文件名</returns>
        public async Task<DataResult<Tuple<string,string,string>>> SaveFileDirect(string fileDictKey, byte[] fileBytes, string batchNo,
            string fileName, string attachFileType)
        {
            string fileRoot = AppSetting.app(new string[] { "FileSettings", "BasePath" });
            string relativePath = AppSetting.app(new string[] { "FileSettings", "RelativePath" });

            //if (!string.IsNullOrWhiteSpace(attachFileType))
            //    relativePath += $"\\{attachFileType}";

            //if (!string.IsNullOrWhiteSpace(fileDictKey))
            //    relativePath += $"\\{fileDictKey}";

            string? dirAbs;
            if (string.IsNullOrEmpty(fileRoot))
            {
                dirAbs = Path.Combine(_environment.WebRootPath ?? "", relativePath);
            }
            else
            {
                dirAbs = Path.Combine(fileRoot, relativePath);
            }

            if (!Directory.Exists(dirAbs))
                Directory.CreateDirectory(dirAbs);

            // 先存库获取Id
            var id = SnowFlakeSingle.Instance.NextId();

            var fileSuffix = Path.GetExtension(fileName).ToLower(); // 文件后缀

            var fileSaveName = $"{id}{fileSuffix}".ToLower();
            string fileRelaPath = Path.Combine(relativePath, fileSaveName).ToLower();
            string fileAbsPath = Path.Combine(dirAbs, fileSaveName).ToLower();

            Logger.Log(NLog.LogLevel.Info, "批次={no} 生成文件保存路径完成 路由={filePath} 服务器系统={system}", batchNo, fileAbsPath,
                RuntimeInformation.OSDescription);

            //预先创建目录
            if (!Directory.Exists(dirAbs))
            {
                Directory.CreateDirectory(dirAbs);
            }

            await File.WriteAllBytesAsync(fileAbsPath, fileBytes);

            //string bookFilePath = string.Empty;

            //if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
            //{
            //    bookFilePath = System.Text.RegularExpressions.Regex.Match(dirAbs, relativePath.Replace("/", "\\/") + ".*").Value;
            //}
            //else
            //{
            //    bookFilePath = System.Text.RegularExpressions.Regex.Match(dirAbs, relativePath.Replace("\\", "\\\\") + ".*").Value;
            //}

            return DataResult<Tuple<string, string,string>>.Success(new Tuple<string, string, string>(fileAbsPath, fileSaveName, fileName));
        }

        #region 转移文件
        /// <summary>
        /// 转移文件
        /// </summary>
        /// <param name="fileDictKey">文件目录KEY</param>
        /// <param name="sourceFilePath">源文件完整路径</param>
        /// <param name="batchNo">批次号</param>
        /// <param name="isLocalTempFile">是否生成本地文件</param>
        /// <param name="attachFileType">附件类型 bcfiles-BC文件</param>
        /// <param name="isKeepSource">是否保留原文件</param>
        /// <returns>返回新的文件路径</returns>
        public async Task<DataResult<Tuple<string, string, string,int>>> MoveFile(string fileDictKey, string sourceFilePath, string batchNo,
            bool isLocalTempFile = false, string attachFileType = "bcfiles", bool isKeepSource = false)
        {
            string fileRoot = AppSetting.app(new string[] { "FileSettings", "BasePath" });

            string relativePath = AppSetting.app(new string[] { "FileSettings", "RelativePath" });

            //if (!string.IsNullOrWhiteSpace(attachFileType))
            //    relativePath += $"\\{attachFileType}";

            //if (!string.IsNullOrWhiteSpace(fileDictKey))
            //    relativePath += $"\\{fileDictKey}";

            string? dirAbs;
            if (string.IsNullOrEmpty(fileRoot))
            {
                dirAbs = Path.Combine(_environment.WebRootPath ?? "", relativePath);
            }
            else
            {
                dirAbs = Path.Combine(fileRoot, relativePath);
            }

            if (!Directory.Exists(dirAbs))
                Directory.CreateDirectory(dirAbs);

            // 先存库获取Id
            var id = SnowFlakeSingle.Instance.NextId();

            var fileSuffix = Path.GetExtension(sourceFilePath).ToLower(); // 文件后缀

            var fileSaveName = $"{id}{fileSuffix}".ToLower();
            string fileRelaPath = Path.Combine(relativePath, fileSaveName).ToLower();
            string fileAbsPath = Path.Combine(dirAbs, fileSaveName).ToLower();

            Logger.Log(NLog.LogLevel.Info, $"批次={batchNo} 生成文件保存路径完成 路由={fileAbsPath} 服务器系统={RuntimeInformation.OSDescription}");

            ////预先创建目录
            //if (!Directory.Exists(filePath))
            //{
            //    Directory.CreateDirectory(filePath);
            //}

            int fileSize = 0;
            if (sourceFilePath.StartsWith("http", StringComparison.OrdinalIgnoreCase) ||
                sourceFilePath.StartsWith("https", StringComparison.OrdinalIgnoreCase))
            {
                //var bcStream = await sourceFilePath.GetAsStreamAsync();

                //using (var fileStream = File.Create(fileFullName))
                //{
                //    await bcStream.CopyToAsync(fileStream);
                //}
            }
            else
            {
                System.IO.FileStream file = new System.IO.FileStream(sourceFilePath, FileMode.Open, FileAccess.Read);

                using (var fileStream = File.Create(fileAbsPath))
                {
                    fileSize = (int)fileStream.Length;

                    await file.CopyToAsync(fileStream);
                }

                file.Close();


                try
                {
                    if (!isKeepSource)
                    {
                        //删除原文件
                        System.IO.File.Delete(sourceFilePath);
                    }
                }
                catch (Exception delEx)
                {
                    Logger.Log(NLog.LogLevel.Info, $"批次={batchNo} 删除文件异常 filepath={sourceFilePath} ex={delEx.Message}");
                }
            }

            Logger.Log(NLog.LogLevel.Info, $"批次={batchNo} 完成文件保存 filepath={sourceFilePath}");

            string bookFilePath = string.Empty;

            //if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
            //{
            //    bookFilePath = System.Text.RegularExpressions.Regex.Match(fileFullName, relativePath.Replace("/", "\\/") + ".*").Value;
            //}
            //else
            //{
            //    bookFilePath = System.Text.RegularExpressions.Regex.Match(fileFullName, relativePath.Replace("\\", "\\\\") + ".*").Value;
            //}

            return DataResult<Tuple<string, string, string,int>>.Success(new Tuple<string, string, string,int>(fileAbsPath, fileSaveName, Path.GetFileName(fileAbsPath),fileSize));
        }
        #endregion
    }
}