pictureServer/PictureFilesApi/Services/PlatformServices.cs

using Hopetry.WebApi.Common;
using Infrastructure;
using Infrastructure.Extensions;
using Infrastructure.Helpers;
using MetadataExtractor;
using MetadataExtractor.Formats.Exif;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using PictureFilesApi.Common;
using PictureFilesApi.Models;
using PictureFilesApi.Models.RequestModel;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Security.Policy;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Directory = System.IO.Directory;

namespace PictureFilesApi.Services
{
    public class PlatformServices
    {
        IConfiguration _configuration;
        private readonly ILogger<PlatformServices> _logger;
        private string _filePath;

        private readonly HttpClient _client;

        //private string _dbFilePath; //数据库中的文件路径
        //private string _dbThumbnail; //数据库中的缩略图路径
        public PlatformServices(IConfiguration configuration, ILogger<PlatformServices> logger)
        {
            _configuration = configuration;
            _logger = logger;
            _filePath = AppContext.BaseDirectory;
            var baseAddress = _configuration.GetSection("AppSetting:HttpHost").Value;
            _client = new HttpClient
            {
                BaseAddress = new Uri(baseAddress)
            };
        }

        /// <summary>
        /// 上传文件
        /// </summary>
        /// <param name="files"></param>
        /// <returns></returns>
        public List<UploadFile> Upload(IFormFileCollection files, AddOrUpdateUploadReq req)
        {
            var result = new List<UploadFile>();
            foreach (var file in files)
            {
                result.Add(Add(file, req));
            }

            return result;
        }

        /// <summary>
        /// 上传文件-带备注
        /// </summary>
        /// <param name="files"></param>
        /// <returns></returns>
        public async Task<List<UploadFile>> UploadWithExif(IFormFileCollection files, AddOrUpdateUploadReq req)
        {
            var fileresult = new List<UploadFile>();
            var exifresult = new List<DroneImageRef>();
            foreach (var file in files)
            {
                string extension = Path.GetExtension(file.FileName).ToLower();
                if (extension == ".jpg" || extension == ".jpeg" || extension == ".png" || extension == ".bmp" ||
                    extension == ".gif")
                {
                    var result = AddWithExif(file, req);
                    fileresult.Add(result.Item1);
                    if (result.Item2 != null && !string.IsNullOrEmpty(result.Item2.CaseId))
                    {
                        exifresult.Add(result.Item2);
                    }
                }
                else
                {
                    fileresult.Add(Add(file, req));
                }
            }

            if (exifresult.Count > 0)
            {
                var jsonData = JsonConvert.SerializeObject(exifresult);
                var content = new StringContent(jsonData, Encoding.UTF8, "application/json");

                HttpResponseMessage response = await _client.PostAsync("/api/DroneCaseInfoSingle/AddCaseImg", content);
                response.EnsureSuccessStatusCode();
                string responseBody = await response.Content.ReadAsStringAsync();
            }

            return fileresult;
        }


        /// <summary>
        /// 删除文件
        /// </summary>
        /// <returns></returns>
        public Response<bool> DeleteImg(string path)
        {
            try
            {
                File.Delete(path);
                _logger.LogError("删除文件成功：" + path);
                return new Response<bool>
                {
                    Result = true
                };
            }
            catch (Exception ex)
            {
                _logger.LogError("删除文件失败：" + path);
                return new Response<bool>
                {
                    Result = false
                };
            }
        }

        /// <summary>
        /// 判断图片是否存在
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public Response<bool> ExistsImg(string path)
        {
            try
            {
                if (File.Exists(path))
                    return new Response<bool> { Result = true };
                else
                {
                    return new Response<bool> { Result = false };
                }
            }
            catch (Exception ex)
            {
                return new Response<bool>
                {
                    Result = false
                };
            }
        }

        /// <summary>
        /// 复制图片
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public Response<string> CopyImg(string sourceFilePathall)
        {
            string destinationFolder = "DroneEnforcement\\2024\\20240914";
            string[] sourceFilePathsp = sourceFilePathall.Split(',');
            string endSte = "";
            foreach (var sourceFilePath in sourceFilePathsp)
            {
                try
                {
                    // 检查源文件是否存在
                    if (!File.Exists(sourceFilePath))
                    {
                        continue;
                    }

                    // 获取源文件的文件名
                    string fileName = Path.GetFileName(sourceFilePath);

                    // 生成目标文件路径
                    string destFilePath = Path.Combine(destinationFolder, fileName);

                    // 复制文件到目标文件夹
                    File.Copy(sourceFilePath, destFilePath);
                    //endSte += destFilePath + ","; 
                    endSte = destFilePath;
                }
                catch (Exception ex)
                {
                }
            }

            return new Response<string>
            {
                Result = endSte
            };
        }


        public List<UploadFile> UploadNoReName(IFormFileCollection files, AddOrUpdateUploadReq req)
        {
            var result = new List<UploadFile>();
            foreach (var file in files)
            {
                result.Add(Add(file, req, false));
            }

            return result;
        }

        /// <summary>
        /// 单个添加文件
        /// </summary>
        /// <param name="file"></param>
        /// <returns></returns>
        public UploadFile Add(IFormFile file, AddOrUpdateUploadReq req, bool reName = false)
        {
            if (file != null && file.Length > 0 && file.Length < 104857600 * 2)
            {
                using (var binaryReader = new BinaryReader(file.OpenReadStream()))
                {
                    var fileName = Path.GetFileName(file.FileName);
                    var data = binaryReader.ReadBytes((int)file.Length);
                    var tuple = SaveFile(fileName, data, req, reName);

                    string _dbFilePath = tuple.Item1;
                    string _dbThumbnail = tuple.Item2;

                    var filedb = new UploadFile
                    {
                        FilePath = _dbFilePath,
                        Thumbnail = _dbThumbnail,
                        FileName = fileName,
                        CreateTime = DateTime.Now,
                        FileSize = file.Length.ToInt(),
                        FileType = Path.GetExtension(fileName),
                        Extension = Path.GetExtension(fileName)
                    };
                    return filedb;
                }
            }
            else
            {
                throw new Exception("文件过大");
            }
        }


        /// <summary>
        /// 单个添加文件-带备注
        /// </summary>
        /// <param name="file"></param>
        /// <returns></returns>
        public (UploadFile, DroneImageRef) AddWithExif(IFormFile file, AddOrUpdateUploadReq req, bool reName = false)
        {
            if (file != null && file.Length > 0 && file.Length < 104857600 * 2)
            {
                using (var binaryReader = new BinaryReader(file.OpenReadStream()))
                {
                    var fileName = Path.GetFileName(file.FileName);
                    var data = binaryReader.ReadBytes((int)file.Length);
                    var tuple = SaveFile(fileName, data, req, reName);

                    string _dbFilePath = tuple.Item1;
                    string _dbThumbnail = tuple.Item2;

                    var filedb = new UploadFile
                    {
                        FilePath = _dbFilePath,
                        Thumbnail = _dbThumbnail,
                        FileName = fileName,
                        CreateTime = DateTime.Now,
                        FileSize = file.Length.ToInt(),
                        FileType = Path.GetExtension(fileName),
                        Extension = Path.GetExtension(fileName)
                    };
                    var exif = new DroneImageRef();
                    using (MemoryStream memoryStream = new MemoryStream())
                    {
                        file.CopyTo(memoryStream);
                        memoryStream.Position = 0;
                        // 从文件流中读取元数据
                        var directories = ImageMetadataReader.ReadMetadata(memoryStream);
                        if (directories != null)
                        {
                            //备注 案件id
                            var exDirectory = directories.OfType<ExifSubIfdDirectory>().FirstOrDefault();
                            if (exDirectory != null)
                            {
                                exif.Id = Guid.NewGuid().ToString();
                                exif.FilePath = filedb.FilePath;
                                var caseid = exDirectory.GetDescription(ExifSubIfdDirectory.TagUserComment);
                                exif.CaseId = caseid;
                            }
                            else
                            {
                                return (filedb, exif);
                            }

                            //经度
                            var gpsDirectory = directories.OfType<GpsDirectory>().FirstOrDefault();
                            if (gpsDirectory != null)
                            {
                                var latitude = gpsDirectory.GetDescription(GpsDirectory.TagLatitude);
                                var latitudeRef = gpsDirectory.GetDescription(GpsDirectory.TagLatitudeRef);
                                var longitude = gpsDirectory.GetDescription(GpsDirectory.TagLongitude);
                                var longitudeRef = gpsDirectory.GetDescription(GpsDirectory.TagLongitudeRef);

                                double latitudeDecimal = ConvertDmsToDecimal(latitude, latitudeRef);
                                double longitudeDecimal = ConvertDmsToDecimal(longitude, longitudeRef);

                                exif.Lat = latitudeDecimal;
                                exif.Lng = longitudeDecimal;
                            }

                            //方位角 Orientation
                            // 查找 EXIF IFD0 目录
                            var exifIfd0Directory = directories.OfType<ExifIfd0Directory>().FirstOrDefault();
                            if (exifIfd0Directory != null &&
                                exifIfd0Directory.TryGetInt32(ExifDirectoryBase.TagOrientation, out int orientation))
                            {
                                exif.Orientation = orientation;
                            }

                            //创建时间
                            var subIfdDirectory = directories.OfType<ExifSubIfdDirectory>().FirstOrDefault();

                            if (subIfdDirectory != null &&
                                subIfdDirectory.TryGetDateTime(ExifDirectoryBase.TagDateTimeOriginal,
                                    out DateTime dateTime))
                            {
                                exif.CreateTime = dateTime;
                            }
                            else
                            {
                                exif.CreateTime = DateTime.Now;
                            }
                        }
                    }

                    return (filedb, exif);
                }
            }
            else
            {
                throw new Exception("文件过大");
            }
        }


        static double ConvertDmsToDecimal(string dmsString, string refString)
        {
            if (string.IsNullOrWhiteSpace(dmsString))
                return double.NaN;

            var parts = dmsString.Split('°', '\'', '\"');
            if (parts.Length < 3)
                return double.NaN;

            try
            {
                double degrees = double.Parse(parts[0].Trim());
                double minutes = double.Parse(parts[1].Trim());
                double seconds = double.Parse(parts[2].Trim());

                // Convert to decimal degrees
                double decimalDegrees = degrees + (minutes / 60) + (seconds / 3600);

                // Check the reference direction
                if (refString == "S" || refString == "W")
                    decimalDegrees = -decimalDegrees;

                return decimalDegrees;
            }
            catch (Exception)
            {
                // Handle parsing errors
                return double.NaN;
            }
        }

        /// <summary>
        /// 存储文件，如果是图片文件则生成缩略图
        /// </summary>
        /// <param name="fileName"></param>
        /// <param name="fileBuffers"></param>
        /// <exception cref="Exception"></exception>
        private Tuple<string, string> SaveFile(string fileName, byte[] fileBuffers, AddOrUpdateUploadReq req,
            bool reName = true)
        {
            //string folder = req.project + "\\" + DateTime.Now.ToString("yyyy") + "\\" +
            //                DateTime.Now.ToString("yyyyMMdd");
            //string folder_s = folder.Replace(req.project, "S_" + req.project);
            string folder = Path.Combine(req.project, DateTime.Now.ToString("yyyy"), DateTime.Now.ToString("yyyyMMdd"));
            string folder_s = Path.Combine("S_" + req.project, DateTime.Now.ToString("yyyy"),
                DateTime.Now.ToString("yyyyMMdd"));

            //判断文件是否为空
            if (string.IsNullOrEmpty(fileName))
            {
                throw new Exception("文件名不能为空");
            }

            //判断文件是否为空
            if (fileBuffers.Length < 1)
            {
                throw new Exception("文件不能为空");
            }

            var uploadPath = Path.Combine(_filePath, folder);
            var uploadPath_s = Path.Combine(_filePath, folder_s);

            if (!Directory.Exists(uploadPath))
            {
                Directory.CreateDirectory(uploadPath);
            }

            var ext = Path.GetExtension(fileName).ToLower();
            // 获取文件名（不含扩展名）
            string originalFileName = Path.GetFileNameWithoutExtension(fileName);
            //判断是否存在相同文件名的文件
            int count = 1;
            while (File.Exists(Path.Combine(uploadPath, fileName)))
            {
                fileName = $"{originalFileName}_{count++}{ext}";
            }

            string newName = reName == true
                ? GenerateId.GenerateOrderNumber() + ext
                : Path.GetFileNameWithoutExtension(fileName) + ext;

            string _dbThumbnail = string.Empty;
            string _dbFilePath = string.Empty;
            using (var fs = new FileStream(Path.Combine(uploadPath, newName), FileMode.Create))
            {
                fs.Write(fileBuffers, 0, fileBuffers.Length);
                fs.Close();

                //生成缩略图
                if (ext.Contains(".jpg") || ext.Contains(".jpeg") || ext.Contains(".png") || ext.Contains(".bmp") ||
                    ext.Contains(".gif"))
                {
                    if (!Directory.Exists(uploadPath_s))
                    {
                        Directory.CreateDirectory(uploadPath_s);
                    }

                    //string thumbnailName = GenerateId.GenerateOrderNumber() + ext;
                    ImgHelper.MakeThumbnail(Path.Combine(uploadPath, newName), Path.Combine(uploadPath_s, newName));
                    _dbThumbnail = Path.Combine(folder_s, newName);
                }


                _dbFilePath = Path.Combine(folder, newName);
            }

            return new Tuple<string, string>(_dbFilePath, _dbThumbnail);
        }

        /// <summary>
        /// 存储文件，如果是图片文件则生成缩略图 保留文件原始名 这个是给文件单独生成文件夹
        /// </summary>
        /// <param name="fileName"></param>
        /// <param name="fileBuffers"></param>
        /// <param name="req"></param>
        /// <param name="reName"></param>
        /// <returns></returns>
        /// <exception cref="Exception"></exception>
        private Tuple<string, string> SaveFileNew(string fileName, byte[] fileBuffers, AddOrUpdateUploadReq req,
            bool reName = true)
        {
            string folder = req.project + "\\" + DateTime.Now.ToString("yyyy") + "\\" +
                            DateTime.Now.ToString("yyyyMMdd");
            string folder_s = folder.Replace(req.project, "S_" + req.project);

            //判断文件是否为空
            if (string.IsNullOrEmpty(fileName))
            {
                throw new Exception("文件名不能为空");
            }

            //判断文件是否为空
            if (fileBuffers.Length < 1)
            {
                throw new Exception("文件不能为空");
            }

            // 获取文件扩展名
            var ext = Path.GetExtension(fileName).ToLower();
            // 获取文件名（不含扩展名）
            string originalFileName = Path.GetFileNameWithoutExtension(fileName);
            string newName = originalFileName + ext;

            // 组合文件夹路径
            var uploadPath = Path.Combine(_filePath, folder, originalFileName);
            var uploadPath_s = Path.Combine(_filePath, folder_s, originalFileName);

            // 如果文件夹不存在，则创建
            if (!Directory.Exists(uploadPath))
            {
                Directory.CreateDirectory(uploadPath);
            }

            // 检查文件是否重名，如果重名则在文件名后添加 "_1", "_2" 等
            int count = 1;
            string tempFileName = newName;
            while (File.Exists(Path.Combine(uploadPath, tempFileName)))
            {
                tempFileName = $"{originalFileName}_{count++}{ext}";
            }

            newName = tempFileName;

            string _dbThumbnail = string.Empty;
            string _dbFilePath = string.Empty;

            // 保存文件
            using (var fs = new FileStream(Path.Combine(uploadPath, newName), FileMode.Create))
            {
                fs.Write(fileBuffers, 0, fileBuffers.Length);
                fs.Close();

                // 如果是图像文件，生成缩略图
                if (ext.Contains(".jpg") || ext.Contains(".jpeg") || ext.Contains(".png") || ext.Contains(".bmp") ||
                    ext.Contains(".gif"))
                {
                    if (!Directory.Exists(uploadPath_s))
                    {
                        Directory.CreateDirectory(uploadPath_s);
                    }

                    ImgHelper.MakeThumbnail(Path.Combine(uploadPath, newName), Path.Combine(uploadPath_s, newName));
                    _dbThumbnail = Path.Combine(folder_s, originalFileName, newName);
                }

                _dbFilePath = Path.Combine(folder, originalFileName, newName);
            }

            return new Tuple<string, string>(_dbFilePath, _dbThumbnail);
        }


        /// <summary>
        /// 上传文件
        /// </summary>
        /// <param name="files"></param>
        /// <returns></returns>
        public List<UploadFile> UploadGraph(IFormFileCollection files, AddOrUpdateUploadGraphReq req)
        {
            var result = new List<UploadFile>();
            foreach (var file in files)
            {
                result.Add(AddGraph(file, req));
            }

            return result;
        }

        /// <summary>
        /// 单个添加文件
        /// </summary>
        /// <param name="file"></param>
        /// <returns></returns>
        public UploadFile AddGraph(IFormFile file, AddOrUpdateUploadGraphReq req)
        {
            if (file != null && file.Length > 0 && file.Length < 104857600)
            {
                using (var binaryReader = new BinaryReader(file.OpenReadStream()))
                {
                    var fileName = Path.GetFileName(file.FileName);
                    var data = binaryReader.ReadBytes((int)file.Length);


                    var tuple = SaveFileGraph(fileName, data, req);

                    string _dbFilePath = tuple.Item1;
                    string _dbThumbnail = tuple.Item2;

                    var filedb = new UploadFile
                    {
                        FilePath = _dbFilePath,
                        Thumbnail = _dbThumbnail,
                        FileName = fileName,
                        FileSize = file.Length.ToInt(),
                        FileType = Path.GetExtension(fileName),
                        Extension = Path.GetExtension(fileName)
                    };
                    return filedb;
                }
            }
            else
            {
                throw new Exception("文件过大");
            }
        }

        /// <summary>
        /// 保存带水印的图片
        /// </summary>
        /// <param name="fileName"></param>
        /// <param name="fileBuffers"></param>
        private Tuple<string, string> SaveFileGraph(string fileName, byte[] fileBuffers, AddOrUpdateUploadGraphReq req)
        {
            string folder = req.project + "\\" + DateTime.Now.ToString("yyyy") + "\\" +
                            DateTime.Now.ToString("yyyyMMdd");
            string folder_s = folder.Replace(req.project, "S_" + req.project);

            //判断文件是否为空
            if (string.IsNullOrEmpty(fileName))
            {
                throw new Exception("文件名不能为空");
            }

            //判断文件是否为空
            if (fileBuffers.Length < 1)
            {
                throw new Exception("文件不能为空");
            }

            var uploadPath = Path.Combine(_filePath, folder);
            var uploadPath_s = Path.Combine(_filePath, folder_s);

            if (!Directory.Exists(uploadPath))
            {
                Directory.CreateDirectory(uploadPath);
            }

            var ext = Path.GetExtension(fileName).ToLower();
            string newName = GenerateId.GenerateOrderNumber() + ext;

            string _dbThumbnail = string.Empty;
            string _dbFilePath = string.Empty;

            if (req.haveFileName == 1)
            {
                req.watermark += "\n" + newName;
            }

            if (req.haveDateTime == 1)
            {
                req.watermark += "\n" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
            }

            //画笔画图画水印并保存
            PutGraphics(fileBuffers, Path.Combine(uploadPath, newName), req);

            //生成缩略图
            if (ext.Contains(".jpg") || ext.Contains(".jpeg") || ext.Contains(".png") || ext.Contains(".bmp") ||
                ext.Contains(".gif"))
            {
                if (!Directory.Exists(uploadPath_s))
                {
                    Directory.CreateDirectory(uploadPath_s);
                }

                //string thumbnailName = GenerateId.GenerateOrderNumber() + ext;
                ImgHelper.MakeThumbnail(Path.Combine(uploadPath, newName), Path.Combine(uploadPath_s, newName));
                _dbThumbnail = Path.Combine(folder_s, newName);
            }

            _dbFilePath = Path.Combine(folder, newName);

            return new Tuple<string, string>(_dbFilePath, _dbThumbnail);
        }

        private bool PutGraphics(byte[] bytes, string path, AddOrUpdateUploadGraphReq req)
        {
            try
            {
                var watermarkedStream = new MemoryStream();
                //return BytToImg(bytes);
                using (var image = BytToImg(bytes))
                {
                    Graphics g = Graphics.FromImage(image);
                    Font font = new Font(FontFamily.GenericSerif, 20, FontStyle.Regular);

                    Color color = Color.Red;
                    if (req.color == "white")
                    {
                        color = Color.White;
                    }

                    SolidBrush brush = new SolidBrush(color);
                    SizeF size = g.MeasureString(req.watermark, font); //文字显示的尺寸
                    var top = (image.Height - size.Height);
                    var left = 0;
                    g.DrawString(req.watermark, font, brush, left, top);
                    g.Dispose();
                    GC.Collect();

                    //这句必须放在下边，如果放在返回值中会报错，应该和GC回收机制有关
                    //image.Save(path, ImageFormat.Png);
                    ImageHelper.Compress((Bitmap)image, path, 50);

                    return true;
                }
            }
            catch (Exception ex)
            {
                return false;
            }
        }

        /// <summary>
        /// 字节流转换成图片
        /// </summary>
        /// <param name="byt">要转换的字节流</param>
        /// <returns>转换得到的Image对象</returns>
        public Image BytToImg(byte[] byt)
        {
            MemoryStream ms = new MemoryStream(byt);
            Image img = Image.FromStream(ms);
            return img;
        }

        /// <summary>
        /// 下载图片接口
        /// </summary>
        /// <param name="req"></param>
        /// <returns></returns>
        public string DownLoadPictures(QueryDownLoadPicturesReq req)
        {
            string root = AppDomain.CurrentDomain.BaseDirectory;
            string downLoadPath = "DownLoadFiles\\" + DateTime.Now.ToString("yyyyMMdd") + "\\";
            string directoryPath = downLoadPath + Guid.NewGuid().ToString() + "\\";

            if (!Directory.Exists(root + directoryPath))
            {
                Directory.CreateDirectory(root + directoryPath);
            }

            for (int i = 0; i < req.files.Length; i++)
            {
                string filePath = req.files[i];
                string fileName = filePath.Substring(filePath.LastIndexOf("\\") + 1);

                if (File.Exists(root + filePath))
                {
                    File.Copy(root + filePath, root + directoryPath + fileName);
                }
            }

            if (File.Exists(root + downLoadPath + req.filename + ".zip"))
            {
                File.Delete(root + downLoadPath + req.filename + ".zip");
            }

            ZipFile.CreateFromDirectory(root + directoryPath, root + downLoadPath + req.filename + ".zip",
                CompressionLevel.Optimal, false);

            Task.Run(() =>
            {
                Thread.Sleep(1000 * 60 * 10);

                //为了防止误删，判断路径是否有 DownLoadFiles
                if ((root + directoryPath).IndexOf("DownLoadFiles") >= 0)
                {
                    //删除拷贝过来的图片
                    Directory.Delete(root + directoryPath, true);
                }

                //为了防止误删，判断路径是否有 DownLoadFiles
                if ((root + downLoadPath + req.filename + ".zip").IndexOf("DownLoadFiles") >= 0)
                {
                    //删除打包后的压缩包
                    File.Delete(root + downLoadPath + req.filename + ".zip");
                }
            });


            return downLoadPath + req.filename + ".zip";
        }

        /// <summary>
        /// 下载网络图片到本地路径
        /// </summary>
        /// <returns></returns>
        public string DownLoadInternetToLocal(AddOrUpdateDownLoadInternetToLocalReq req)
        {
            //根目录
            string root = AppDomain.CurrentDomain.BaseDirectory;

            //遍历所有图片路径
            for (int i = 0; i < req.files.Count; i++)
            {
                var _item = req.files[i];

                //判断是否存在此文件
                string fullPath = root + _item;
                string smallFullPath = root + "S_" + _item;

                if (!File.Exists(fullPath))
                {
                    //从这里下载图片到指定路径
                    //设置10秒超时时间
                    var flag = HttpClientHelper.DownloadPicture(req.uri, _item, 10 * 1000);
                }

                if (!File.Exists(smallFullPath))
                {
                    //从这里下载图片的缩略图到指定路径
                    //设置10秒超时时间
                    var flag = HttpClientHelper.DownloadPicture(req.uri, "S_" + _item, 10 * 1000);
                }
            }

            return "下载完成";
        }


        public async Task<Response<bool>> UploadImagesold(List<StructuredFileDto> Files)
        {
            if (Files == null || Files.Count == 0)
            {
                return new Response<bool>
                {
                    Code = 500,
                    Result = false,
                    Message = "未上传文件"
                };
            }

            string root = AppDomain.CurrentDomain.BaseDirectory;

            foreach (var fileDto in Files)
            {
                if (fileDto.File == null || fileDto.Metadata == null)
                {
                    continue; // 跳过无效数据
                }

                string savePath = root + fileDto.Metadata.Path;
                string directoryPath = savePath.Substring(0, savePath.LastIndexOf("\\") + 1);
                if (!Directory.Exists(directoryPath))
                {
                    Directory.CreateDirectory(directoryPath);
                }

                await using (var stream = new FileStream(savePath, FileMode.Create))
                {
                    await fileDto.File.CopyToAsync(stream);
                }
            }

            return new Response<bool>
            {
                Code = 200,
                Result = true,
                Message = "上传成功"
            };
        }

        public async Task<Response<bool>> UploadImages(List<StructuredFileDto> Files)
        {
            if (Files == null || Files.Count == 0)
            {
                return new Response<bool>
                {
                    Code = 500,
                    Result = false,
                    Message = "未上传文件"
                };
            }

            string root = AppDomain.CurrentDomain.BaseDirectory;

            foreach (var fileDto in Files)
            {
                if (fileDto.File == null || fileDto.Metadata == null)
                {
                    continue;
                }

                // 把 Windows 路径转换为当前系统路径
                string relativePath = fileDto.Metadata.Path
                    .Replace("\\", Path.DirectorySeparatorChar.ToString())
                    .Replace("/", Path.DirectorySeparatorChar.ToString());
                // 组合路径（跨平台）
                string savePath = Path.Combine(root, relativePath);

                // 获取目录
                string directoryPath = Path.GetDirectoryName(savePath);

                if (!Directory.Exists(directoryPath))
                {
                    Directory.CreateDirectory(directoryPath);
                }

                await using (var stream = new FileStream(savePath, FileMode.Create))
                {
                    await fileDto.File.CopyToAsync(stream);
                }
            }

            return new Response<bool>
            {
                Code = 200,
                Result = true,
                Message = "上传成功"
            };
        }

        public async Task<Response<bool>> UploadImages1(IFormCollection form)
        {
            var files = form.Files;
            var metadata = form["paths"]; // StringValues，可当数组用

            for (int i = 0; i < files.Count; i++)
            {
                var file = files[i];
                var path = metadata.Count > i ? metadata[i] : file.FileName;

                string savePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, path);
                Directory.CreateDirectory(Path.GetDirectoryName(savePath)!);

                await using var stream = new FileStream(savePath, FileMode.Create);
                await file.CopyToAsync(stream);
            }

            return new Response<bool>
            {
                Code = 200,
                Result = true,
                Message = "上传成功"
            };
        }

        /// <summary>
        /// 复制图片
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public async Task<List<UploadFile>> NewCopyImg(string sourceFilePathAll)
        {
            //DroneEnforcement\\2024\\20241109\\Image_Water_1731054661277_6.jpeg
            // todo 无论是斜杠还是反斜杠都统一为斜杠 \\\\ 两个反斜杠 \\ 一个反斜杠 
            var sourceFilePathsp = sourceFilePathAll
                .Replace("\\\\", "/")
                .Replace("\\", "/")
                .Split(',');
            // DroneEnforcement
            var suffix = sourceFilePathsp[0].Split('/')[0];
            var fileResult = new List<UploadFile>();
            // 不生成DroneImageRef信息，因为案件信息不一样

            var current = DateTime.Now;
            //目录文件夹
            var destinationFolder = suffix + "/" + current.ToString("yyyy") + "/" + current.ToString("yyyyMMdd");
            foreach (var oldPath in sourceFilePathAll.Split(','))
            {
                var newPath = oldPath.Replace("\\\\", "/").Replace("\\", "/");
                // 源文件绝对路径
                var sourceFilePath = _filePath + "/" + newPath;
                // 如果是文件，直接复制，如果是图片，还需要复制小图
                try
                {
                    // 检查源文件是否存在
                    if (!File.Exists(sourceFilePath))
                    {
                        continue;
                    }

                    // 获取源文件的文件名
                    var fileName = Path.GetFileName(sourceFilePath);
                    // 生成目标文件路径
                    var destFilePath = destinationFolder + "/" + fileName;
                    // 复制文件到目标文件夹
                    var absolutePath = _filePath + "/" + destFilePath;
                    if (!Directory.Exists(Path.GetDirectoryName(absolutePath)))
                    {
                        Directory.CreateDirectory(Path.GetDirectoryName(absolutePath));
                    }
                    else
                    {
                        // 获取文件名（不含扩展名）
                        var originalFileName = Path.GetFileNameWithoutExtension(sourceFilePath);
                        var ext = Path.GetExtension(sourceFilePath);
                        //判断是否存在相同文件名的文件
                        int count = 1;
                        while (File.Exists(absolutePath))
                        {
                            fileName = $"{originalFileName}_{count++}{ext}";
                            destFilePath = destinationFolder + "/" + fileName;
                            absolutePath = _filePath + "/" + destFilePath;
                        }
                    }

                    File.Copy(sourceFilePath, absolutePath);
                    var fileInfo = new FileInfo(absolutePath);
                    var temp = new UploadFile
                    {
                        FilePath = destFilePath,
                        FileName = fileName,
                        OriginalPath = oldPath,
                        CreateTime = DateTime.Now,
                        FileSize = fileInfo.Length.ToInt(),
                        FileType = Path.GetExtension(fileName),
                        Extension = Path.GetExtension(fileName)
                    };
                    //  文件已经保存，现在的工作是生成记录
                    var extension = Path.GetExtension(sourceFilePath);
                    if (extension == ".jpg" || extension == ".jpeg" || extension == ".png" || extension == ".bmp" ||
                        extension == ".gif")
                    {
                        var thumbnailSourceFilePath = _filePath + "/" + "S_" + newPath;
                        if (File.Exists(thumbnailSourceFilePath))
                        {
                            var thumbnailDestFilePath = _filePath + "/" + "S_" + destFilePath;
                            if (!Directory.Exists(Path.GetDirectoryName(thumbnailDestFilePath)))
                            {
                                Directory.CreateDirectory(Path.GetDirectoryName(thumbnailDestFilePath));
                            }

                            File.Copy(thumbnailSourceFilePath, thumbnailDestFilePath);
                            temp.Thumbnail = "S_" + destFilePath;
                        }
                    }

                    fileResult.Add(temp);
                }
                catch (Exception ex)
                {
                }
            }


            // 存储图片方位角等信息  这部分直接复制数据库里的数据
            /*if (exifResult.Count > 0)
            {
                var jsonData = JsonConvert.SerializeObject(exifResult);
                var content = new StringContent(jsonData, Encoding.UTF8, "application/json");

                HttpResponseMessage response = await _client.PostAsync("/api/DroneCaseInfoSingle/AddCaseImg", content);
                response.EnsureSuccessStatusCode();
                string responseBody = await response.Content.ReadAsStringAsync();
            }*/

            return fileResult;
        }

        /// <summary>
        /// 生成缩略图
        /// </summary>
        /// <param name="destFilePath"></param>
        /// <returns></returns>
        private (UploadFile, DroneImageRef) AddWithExif1(string destFilePath)
        {
            var fileName = Path.GetFileName(destFilePath);
            var file = File.OpenRead(destFilePath);
            // DroneEnforcement\2024\20240731\2024073110155230280042.jpg
            // todo 取出路径
            // 生成缩略图
            string folder_s = "S_DroneEnforcement\\" + DateTime.Now.ToString("yyyy") + "\\" +
                              DateTime.Now.ToString("yyyyMMdd");
            var uploadPath_s = Path.Combine(_filePath, folder_s);

            var ext = Path.GetExtension(fileName).ToLower();
            string _dbThumbnail = string.Empty;

            //生成缩略图
            if (ext.Contains(".jpg") || ext.Contains(".jpeg") || ext.Contains(".png") || ext.Contains(".bmp") ||
                ext.Contains(".gif"))
            {
                if (!Directory.Exists(uploadPath_s))
                {
                    Directory.CreateDirectory(uploadPath_s);
                }

                //string thumbnailName = GenerateId.GenerateOrderNumber() + ext;
                ImgHelper.MakeThumbnail(Path.Combine(_filePath, destFilePath), Path.Combine(uploadPath_s, fileName));
                _dbThumbnail = Path.Combine(folder_s, fileName);
            }

            var fileDb = new UploadFile
            {
                FilePath = destFilePath,
                Thumbnail = _dbThumbnail,
                FileName = fileName,
                CreateTime = DateTime.Now,
                FileSize = file.Length.ToInt(),
                FileType = Path.GetExtension(fileName),
                Extension = Path.GetExtension(fileName)
            };

            var exif = new DroneImageRef();
            using (MemoryStream memoryStream = new MemoryStream())
            {
                file.CopyTo(memoryStream);
                memoryStream.Position = 0;
                // 从文件流中读取元数据
                var directories = ImageMetadataReader.ReadMetadata(memoryStream);
                if (directories != null)
                {
                    //备注 案件id
                    var exDirectory = directories.OfType<ExifSubIfdDirectory>().FirstOrDefault();
                    if (exDirectory != null)
                    {
                        exif.Id = Guid.NewGuid().ToString();
                        exif.FilePath = fileDb.FilePath;
                        var caseid = exDirectory.GetDescription(ExifSubIfdDirectory.TagUserComment);
                        exif.CaseId = caseid;
                    }
                    else
                    {
                        return (fileDb, exif);
                    }

                    //经度
                    var gpsDirectory = directories.OfType<GpsDirectory>().FirstOrDefault();
                    if (gpsDirectory != null)
                    {
                        var latitude = gpsDirectory.GetDescription(GpsDirectory.TagLatitude);
                        var latitudeRef = gpsDirectory.GetDescription(GpsDirectory.TagLatitudeRef);
                        var longitude = gpsDirectory.GetDescription(GpsDirectory.TagLongitude);
                        var longitudeRef = gpsDirectory.GetDescription(GpsDirectory.TagLongitudeRef);

                        double latitudeDecimal = ConvertDmsToDecimal(latitude, latitudeRef);
                        double longitudeDecimal = ConvertDmsToDecimal(longitude, longitudeRef);

                        exif.Lat = latitudeDecimal;
                        exif.Lng = longitudeDecimal;
                    }

                    //方位角 Orientation
                    // 查找 EXIF IFD0 目录
                    var exifIfd0Directory = directories.OfType<ExifIfd0Directory>().FirstOrDefault();
                    if (exifIfd0Directory != null &&
                        exifIfd0Directory.TryGetInt32(ExifDirectoryBase.TagOrientation, out int orientation))
                    {
                        exif.Orientation = orientation;
                    }

                    //创建时间
                    var subIfdDirectory = directories.OfType<ExifSubIfdDirectory>().FirstOrDefault();

                    if (subIfdDirectory != null && subIfdDirectory.TryGetDateTime(ExifDirectoryBase.TagDateTimeOriginal,
                            out DateTime dateTime))
                    {
                        exif.CreateTime = dateTime;
                    }
                    else
                    {
                        exif.CreateTime = DateTime.Now;
                    }
                }
            }

            return (fileDb, exif);
        }
    }
}