using DS.Module.Core;
using DS.Module.Core.Data;
using DS.Module.SqlSugar;
using DS.Module.UserModule;
using DS.WMS.Core.Op.Dtos;
using DS.WMS.Core.Op.Entity;
using DS.WMS.Core.Op.Interface;
using DS.WMS.Core.Sys.Entity;
using Masuit.Tools;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.DependencyInjection;
using NPOI.HPSF;
using SharpCompress.Common;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;

namespace DS.WMS.Core.Op.Method
{
    public class OpFileService : IOpFileService
    {
        private readonly IServiceProvider _serviceProvider;
        private readonly ISqlSugarClient db;
        private readonly IUser user;
        private readonly ISaasDbService saasService;
        private readonly IWebHostEnvironment _environment;
        /// <summary>
        ///
        /// </summary>
        /// <param name="serviceProvider"></param>
        public OpFileService(IServiceProvider serviceProvider)
        {
            _serviceProvider = serviceProvider;
            db = _serviceProvider.GetRequiredService<ISqlSugarClient>();
            user = _serviceProvider.GetRequiredService<IUser>();
            saasService = _serviceProvider.GetRequiredService<ISaasDbService>();
            _environment = _serviceProvider.GetRequiredService<IWebHostEnvironment>();
        }

        /// <summary>
        /// 添加附件
        /// </summary>
        /// <param name="file"></param>
        /// <param name="req"></param>
        /// <returns></returns>
        public async Task<DataResult<string>> AddFile(IFormFile file, [FromForm] OpFileReq req)
        {
            var tenantDb = saasService.GetBizDbScopeById(user.TenantId);
            //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<string>(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 OpFile
            {
                Id = id,
                FileName = originalFilename,
                FilePath = fileRelaPath,
                TypeCode = req.TypeCode,
                TypeName = req.TypeName,
                LinkId = req.LinkId,

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

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

            return await Task.FromResult(DataResult<string>.Success(fileRelaPath));
        }

        /// <summary>
        /// 添加附件
        /// </summary>
        /// <param name="formCollection"></param>
        /// <param name="req"></param>
        /// <returns></returns>
        public async Task<DataResult<string>> AddMultiFiles(IFormCollection formCollection, [FromForm] OpFileReq req)
        {
            var tenantDb = saasService.GetBizDbScopeById(user.TenantId);
            //文件集合
            FormFileCollection fileCollection = (FormFileCollection)formCollection.Files;
            //未上传文件
            if (fileCollection == null || fileCollection.Count == 0)
            {
                return await Task.FromResult(DataResult<string>.Failed("附件不存在!"));
            }

            var limitFiles = AppSetting.app<string>(new string[] { "FileSettings", "FileType" });
            var basePath = AppSetting.app(new string[] { "FileSettings", "BasePath" });
            var relativePath = AppSetting.app(new string[] { "FileSettings", "RelativePath" });
            var filesPath = new List<string>();
            foreach (IFormFile file in fileCollection)
            {
                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 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 OpFile
                {
                    Id = id,
                    FileName = originalFilename,
                    FilePath = fileSaveName,
                    TypeCode = req.TypeCode,
                    TypeName = req.TypeName,
                    LinkId = req.LinkId,

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

                using (var stream = File.Create(fileAbsPath))
                {
                    await file.CopyToAsync(stream);
                }
                filesPath.Add(fileSaveName);
            }
            return await Task.FromResult(DataResult<string>.Success(string.Join(",",filesPath.ToArray())));
            //return await Task.FromResult(DataResult<string>.Success(fileRelaPath));
        }
        /// <summary>
        /// 获取业务附件
        /// </summary>
        /// <param name="id">业务id</param>
        /// <returns></returns>
        public DataResult<List<OpFileRes>> GetOpFileList(string id)
        {
            var tenantDb = saasService.GetBizDbScopeById(user.TenantId);
            var users = db.Queryable<SysUser>().Select(x => new { x.Id, x.UserName }).ToList();
            var data = tenantDb.Queryable<OpFile>()
            .Where(a => a.LinkId == long.Parse(id))
            .Select<OpFileRes>()
            .Mapper(it =>
            {
                it.CreateByName = users.Find(x => x.Id == it.CreateBy).UserName;
            })
            .ToList();
            return DataResult<List<OpFileRes>>.Success(data, MultiLanguageConst.DataQuerySuccess);
        }

        /// <summary>
        /// 批量删除附件
        /// </summary>
        /// <param name="req"></param>
        /// <returns></returns>
        public async Task<DataResult<string>> BatchDelFiles(IdModel req)
        {
            var tenantDb = saasService.GetBizDbScopeById(user.TenantId);
             
            if (req.Ids.Length == 0)
            {
                return await Task.FromResult(DataResult<string>.Failed("请勾选要删除的附件!"));
            }


            var fileList = tenantDb.Queryable<OpFile>().Where(x => req.Ids.Contains(x.Id)).ToList();
             
            //删除文件
            foreach (var item in fileList)
            {
                var filePath= Path.Combine(_environment.WebRootPath, item.FilePath);
                if (File.Exists(filePath))
                {
                    File.Delete(filePath);  
                }
            } 
            
            await tenantDb.Deleteable(fileList).ExecuteCommandAsync();
 
            return await Task.FromResult(DataResult<string>.Success("删除成功"));
        }
        /// <summary>
        /// 下载文件
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public async Task<IActionResult> DownloadFile(string id)
        {
            var tenantDb = saasService.GetBizDbScopeById(user.TenantId);
            var opFile = await tenantDb.Queryable<OpFile>().FirstAsync(u => u.Id == long.Parse(id));
            if (opFile == null)
            {
                throw new Exception("文件信息不存在");
            }

            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);
            } 
            var fileFullPath = Path.Combine(dirAbs, opFile.FilePath);
            if (!File.Exists(fileFullPath))
            {
                throw new Exception("文件信息路径不存在");
            }

            //var fileName = HttpUtility.UrlEncode(opFile.FileName, Encoding.GetEncoding("UTF-8"));
            var fileName = opFile.FileName;
            //var result = new FileStreamResult(new FileStream(fileFullPath, FileMode.Open), "application/octet-stream") { FileDownloadName = fileName };
            //return result;
            byte[] byteArr = System.IO.File.ReadAllBytes(fileFullPath);
            string mimeType = "application/octet-stream";
            return new FileContentResult(byteArr, mimeType)
            {
                FileDownloadName = fileName
            };
        }

        /// <summary>
        /// 获取下载文件
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public DataResult<OpFileDownLoadRes> GetOpFileDownLoad(string id)
        {
            var tenantDb = saasService.GetBizDbScopeById(user.TenantId);
            var opFile =  tenantDb.Queryable<OpFile>().First(u => u.Id == long.Parse(id));
            if (opFile == null)
            {
                return DataResult<OpFileDownLoadRes>.Failed("文件信息不存在");
            }

            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);
            }
            var fileFullPath = Path.Combine(dirAbs, opFile.FilePath);
            if (!File.Exists(fileFullPath))
            {
                return DataResult<OpFileDownLoadRes>.Failed("文件信息路径不存在");
            }


            //var fileName = HttpUtility.UrlEncode(opFile.FileName, Encoding.GetEncoding("UTF-8"));

            var temp = File.ReadAllBytes(fileFullPath);

            var data = new OpFileDownLoadRes()
            {
                FileName = opFile.FileName,
                FilePath = fileFullPath,
                //FileStream = File.ReadAllBytes(fileFullPath)
                //FileStream = new FileStream(fileFullPath, FileMode.Open)
            };
            return DataResult<OpFileDownLoadRes>.Success(data); 
        }
    }
}