增加访视下载接口

IRaCIS.Core.API/Controllers/UploadDownLoadController.cs

@@ -944,12 +944,12 @@ namespace IRaCIS.Core.API.Controllers
                 var progress = new
                 {
                     CountPercent = totalCount > 0
-                        ? Math.Round(receivedCount * 100m / totalCount, 2).ToString() + "%"
+                        ? Math.Round(receivedCount * 100m / totalCount, 2).ToString() 
-                        : "0%",
+                        : "0",
 
                       SizePercent = totalSize > 0
-                        ? Math.Round(receivedSize * 100m / totalSize, 2).ToString() + "%"
+                        ? Math.Round(receivedSize * 100m / totalSize, 2).ToString() 
-                        : "0%",
+                        : "0",
 
                     Speed = (speedBps / 1024 >= 1024
                         ? (speedBps / 1024 / 1024).ToString("0.00") + " MB/s"
@@ -1077,8 +1077,191 @@ namespace IRaCIS.Core.API.Controllers
 
 
 
+        [HttpPost("download/VisitImageDownload")]
+        public async Task<IActionResult> VisitImageDownload([FromServices] IPatientService _patientService, [FromServices] IOSSService _oSSService,
+     [FromServices] IHubContext<DownloadHub, IDownloadClient> _downLoadHub,
+      [FromServices] IRepository<Trial> _trialRepository,
+   VisitImageDownloadCommand inCommand)
+        {
+            var rusult = await _patientService.GetDownloadSubjectVisitStudyInfo(inCommand);
+
+            var visitList = rusult.Data;
+            var downloadInfo = (SubejctVisitDownload)rusult.OtherData;
+
+            var trialInfo = _trialRepository.Where(t => t.Id == inCommand.TrialId).Select(t => new { t.TrialCode, t.ResearchProgramNo }).FirstOrDefault();
+
+            var trialZipName = $"{trialInfo.TrialCode}_{trialInfo.ResearchProgramNo}_Image_"; 
+
+            long receivedSize = 0;
+            long receivedCount = 0;
+            long totalSize = downloadInfo.ImageSize;
+            long totalCount = downloadInfo.ImageCount;
+
+            var abortToken = HttpContext.RequestAborted;
+
+            // -------- SignalR 节流参数 --------
+            var notifyInterval = TimeSpan.FromSeconds(1);
+            var lastNotify = DateTime.UtcNow;
+
+            // 用于计算下载速度
+            long lastReceivedSize = 0;
+            DateTime lastSpeedCheck = DateTime.UtcNow;
+
+            async Task NotifyProgressAsync(bool force = false)
+            {
+
+                var now = DateTime.UtcNow;
+                var elapsedSeconds = (now - lastSpeedCheck).TotalSeconds;
+
+                // 如果没有强制推送，并且未到推送间隔，则返回
+                if (!force && elapsedSeconds < notifyInterval.TotalSeconds)
+                    return;
+
+                // 计算下载速度（字节/秒）
+                double speedBps = 0;
+                if (elapsedSeconds > 0)
+                {
+                    speedBps = (receivedSize - lastReceivedSize) / elapsedSeconds;
+                }
+
+                lastSpeedCheck = now;
+                lastReceivedSize = receivedSize;
+                lastNotify = DateTime.UtcNow;
+
+                var progress = new
+                {
+                    CountPercent = totalCount > 0
+                        ? Math.Round(receivedCount * 100m / totalCount, 2).ToString()
+                        : "0",
+
+                    SizePercent = totalSize > 0
+                        ? Math.Round(receivedSize * 100m / totalSize, 2).ToString()
+                        : "0",
+
+                    Speed = (speedBps / 1024 >= 1024
+                        ? (speedBps / 1024 / 1024).ToString("0.00") + " MB/s"
+                        : (speedBps / 1024).ToString("0.00") + " KB/s")
+                };
+
+                // 不阻塞下载流程
+                _ = _downLoadHub.Clients
+                    .User(_userInfo.IdentityUserId.ToString())
+                    .ReceivProgressAsync(
+                        inCommand.CurrentNoticeId,
+                        progress
+                    );
+            }
+
+            Response.ContentType = "application/zip";
+            Response.Headers["Content-Disposition"] = $"attachment; filename={trialZipName}{ExportExcelConverterDate.DateTimeInternationalToString(DateTime.Now, _userInfo.TimeZoneId)}.zip";
+            Response.Headers["Cache-Control"] = "no-store";
+
+
+            try
+            {
+                await using var responseStream = Response.BodyWriter.AsStream();
+                using var zip = new ZipArchive(responseStream, ZipArchiveMode.Create, leaveOpen: true);
+
+                foreach (var visit in visitList)
+                {
+                    foreach (var study in visit.StudyList)
+                    {
+                        abortToken.ThrowIfCancellationRequested();
+
+                        var studyTime = study.StudyTime?.ToString("yyyy-MM-dd HH:mm:ss") ?? "UnknownTime";
+                        var modalitysStr = string.Join('_', study.SeriesList.Select(t => t.Modality).Distinct());
+
+                        // ---------- DICOMDIR ----------
+                        var dicomDirPath = $"{visit.SubjectCode}_{visit.VisitName}/{studyTime}_{modalitysStr}/DICOMDIR";
+                        var dicomDirEntry = zip.CreateEntry(dicomDirPath, CompressionLevel.Fastest);
+
+                        await using (var entryStream = dicomDirEntry.Open())
+                        await using (var dirStream = await _oSSService.GetStreamFromOSSAsync(study.StudyDIRPath))
+                        {
+                            await dirStream.CopyToAsync(entryStream, 32 * 1024, abortToken);
+                        }
+
+                        // ---------- IMAGE FILES ----------
+                        foreach (var series in study.SeriesList)
+                        {
+                            foreach (var instance in series.InstanceList)
+                            {
+                                //当前完成大小
+                                receivedSize = receivedSize + instance.FileSize ?? 0;
+                                receivedCount++;
+
+                                abortToken.ThrowIfCancellationRequested();
+
+                                var entryPath =
+                                    $"{visit.SubjectCode}_{visit.VisitName}/{studyTime}_{modalitysStr}/IMAGE/{instance.FileName}";
+
+                                var entry = zip.CreateEntry(entryPath, CompressionLevel.Fastest);
+
+                                await using var entryStream = entry.Open();
+                                await using var source = await _oSSService.GetStreamFromOSSAsync(instance.Path);
+
+                                #region 将多帧合并为一帧
+
+                                // 如果你是从 stream 打开
+                                var dicomFile = await DicomFile.OpenAsync(source);
+
+                                // 获取 Pixel Data 标签
+                                var pixelData = DicomPixelData.Create(dicomFile.Dataset);
+                                //获取像素是否为封装形式
+                                var syntax = dicomFile.Dataset.InternalTransferSyntax;
+
+                                //对于封装像素的文件做转换
+                                if (syntax.IsEncapsulated)
+                                {
+                                    // 创建一个新的片段序列
+                                    var newFragments = new DicomOtherByteFragment(DicomTag.PixelData);
+                                    // 获取每帧数据并封装为单独的片段
+                                    for (int n = 0; n < pixelData.NumberOfFrames; n++)
+                                    {
+                                        var frameData = pixelData.GetFrame(n);
+                                        newFragments.Fragments.Add(new MemoryByteBuffer(frameData.Data));
+                                    }
+                                    // 替换原有的片段序列
+                                    dicomFile.Dataset.AddOrUpdate(newFragments);
+                                }
+
+                                #endregion
+
+                                await dicomFile.SaveAsync(entryStream);
+                                //await source.CopyToAsync(entryStream, 32 * 1024, abortToken);
+
+
+                                await NotifyProgressAsync();
+                            }
+                        }
+                    }
+                }
+
+                // 正常完成
+                await NotifyProgressAsync(true);
+                await _patientService.DownloadImageSuccess(downloadInfo.Id);
+            }
+            catch (OperationCanceledException)
+            {
+                // ✅ 客户端取消 / 断开 —— 正常情况
+                Log.Logger.Warning("Download canceled by client");
+            }
+            catch (IOException ex) when (abortToken.IsCancellationRequested)
+            {
+                // ✅ HttpClient 流在中断时的常见异常
+                Log.Logger.Warning($"Client disconnected: {ex.Message}");
+            }
+            catch (NullReferenceException ex) when (abortToken.IsCancellationRequested)
+            {
+                // ✅ HttpConnection.ContentLengthReadStream 已知问题
+                Log.Logger.Warning($"Stream aborted: {ex.Message}");
+            }
+
+            return new EmptyResult();
 
 
         }
 
+    }
+
 }

IRaCIS.Core.Application/Helper/DicomDIRHelper.cs

@@ -13,6 +13,8 @@ namespace IRaCIS.Core.Application.Helper
 
     public class StudyDIRInfo
     {
+        public Guid SubjectId { get; set; }
+        public Guid TrialId { get; set; }
         public Guid SubjectVisitId { get; set; }
         // Study
         public Guid DicomStudyId { get; set; }

IRaCIS.Core.Application/IRaCIS.Core.Application.xml

@@ -18834,12 +18834,10 @@
             <param name="inCommand"></param>
             <returns></returns>
         </member>
-        <member name="M:IRaCIS.Application.Services.PatientService.GetDownloadSubjectVisitStudyInfo(System.Guid,System.Guid,IRaCIS.Core.Infra.EFCore.IRepository{IRaCIS.Core.Domain.Models.DicomStudy},IRaCIS.Core.Application.Helper.IOSSService)">
+        <member name="M:IRaCIS.Application.Services.PatientService.GetDownloadSubjectVisitStudyInfo(IRaCIS.Application.Contracts.VisitImageDownloadCommand)">
             <summary>
             获取下载的访视检查信息
             </summary>
-            <param name="trialId"></param>
-            <param name="subjectVisitId"></param>
             <returns></returns>
         </member>
         <member name="M:IRaCIS.Application.Services.PatientService.DownloadImageSuccess(System.Guid)">

IRaCIS.Core.Application/Service/Visit/DTO/PatientViewModel.cs

@@ -965,6 +965,16 @@ namespace IRaCIS.Application.Contracts
 
     }
 
+    public class VisitImageDownloadCommand
+    {
+        public Guid TrialId { get; set; }
+
+        public List<Guid> SubjectVisitIdList { get; set; }
+
+        [NotDefault]
+        public string CurrentNoticeId { get; set; }
+    }
+
     public class PatientImageDownloadCommand
     {
         public List<Guid> PatientIdList { get; set; }
@@ -1211,6 +1221,19 @@ namespace IRaCIS.Application.Contracts
 
     }
 
+    public class DownloadVisitDto
+    {
+        public Guid TrialId  { get; set; }
+
+        public Guid SubjectId { get; set; }
+
+        public string SubjectCode { get; set; }
+
+        public string VisitName { get; set; }
+
+        public List<DownloadDicomStudyDto> StudyList { get; set; }
+    }
+
     public class DownloadPatientDto
     {
         public string PatientName { get; set; }

IRaCIS.Core.Application/Service/Visit/Interface/IPatientService.cs

@@ -10,5 +10,8 @@ namespace IRaCIS.Application.Interfaces
 
         public Task<IResponseOutput> DownloadImageSuccess(Guid trialImageDownloadId);
 
+
+        public Task<IResponseOutput<List<DownloadVisitDto>>> GetDownloadSubjectVisitStudyInfo(VisitImageDownloadCommand inCommand);
+
     }
 }

IRaCIS.Core.Application/Service/Visit/PatientService.cs

@@ -55,6 +55,7 @@ namespace IRaCIS.Application.Services
     public class PatientService(IRepository<SCPStudySubjectVisit> _studySubjectVisitRepository,
         IRepository<TrialIdentityUser> _trialIdentityUserRepository,
          IRepository<SCPStudy> _SCPStudyRepository, IOSSService _oSSService,
+         IRepository<DicomStudy> _dicomStudyRepository, 
         IRepository<IdentityUser> _identityUserRepository,
         IRepository<SubjectPatient> _subjectPatientRepository, IRepository<SCPStudyHospitalGroup> _SCPStudyHospitalGroupRepository,
          IRepository<Trial> _trialRepository,
@@ -3458,11 +3459,8 @@ namespace IRaCIS.Application.Services
         /// <summary>
         /// 获取下载的访视检查信息
         /// </summary>
-        /// <param name="trialId"></param>
-        /// <param name="subjectVisitId"></param>
         /// <returns></returns>
-        public async Task<IResponseOutput> GetDownloadSubjectVisitStudyInfo(Guid trialId, Guid subjectVisitId,
+        public async Task<IResponseOutput<List<DownloadVisitDto> >> GetDownloadSubjectVisitStudyInfo(VisitImageDownloadCommand inCommand)
-            [FromServices] IRepository<DicomStudy> _dicomStudyRepository, [FromServices] IOSSService _oSSService)
         {
 
             var dirDic = new Dictionary<string, string>();
@@ -3470,13 +3468,15 @@ namespace IRaCIS.Application.Services
             #region DIR处理导出文件名，并将对应关系上传到OSS里面存储
 
             //有传输语法值的导出 才生成DIR
-            if (_subjectVisitRepository.Where(t => t.Id == subjectVisitId).SelectMany(t => t.StudyList.SelectMany(t => t.InstanceList)).All(c => c.TransferSyntaxUID != string.Empty))
+            if (_subjectVisitRepository.Where(t => inCommand.SubjectVisitIdList.Contains(t.Id) ).SelectMany(t => t.StudyList.SelectMany(t => t.InstanceList)).All(c => c.TransferSyntaxUID != string.Empty))
             {
-                var list = _subjectVisitRepository.Where(t => t.Id == subjectVisitId).SelectMany(t => t.StudyList)
+                var list = _subjectVisitRepository.Where(t => inCommand.SubjectVisitIdList.Contains(t.Id)).SelectMany(t => t.StudyList)
                     .SelectMany(t => t.InstanceList)
                     .Select(t => new StudyDIRInfo()
                     {
-
+                        SubjectId=t.SubjectId,
+                        TrialId=t.TrialId,
+                        SubjectVisitId=t.SubjectVisitId,
                         DicomStudyId = t.DicomStudy.Id,
 
                         PatientId = t.DicomStudy.PatientId,
@@ -3509,11 +3509,11 @@ namespace IRaCIS.Application.Services
 
                     }).ToList();
 
-                var pathInfo = await _subjectVisitRepository.Where(t => t.Id == subjectVisitId).Select(t => new { t.TrialId, t.SubjectId, VisitId = t.Id }).FirstNotNullAsync();
+                //var pathInfoList = await _subjectVisitRepository.Where(t => inCommand.SubjectVisitIdList.Contains(t.Id)).Select(t => new { t.TrialId, t.SubjectId, VisitId = t.Id }).ToListAsync();
 
-                foreach (var item in list.GroupBy(t => new { t.StudyInstanceUid, t.DicomStudyId }))
+                foreach (var item in list.GroupBy(t => new { t.StudyInstanceUid, t.DicomStudyId,t.SubjectVisitId,t.TrialId,t.SubjectId }))
                 {
-                    var ossFolder = $"{pathInfo.TrialId}/Image/{pathInfo.SubjectId}/{pathInfo.VisitId}/{item.Key.StudyInstanceUid}";
+                    var ossFolder = $"{item.Key.TrialId}/Image/{item.Key.SubjectId}/{item.Key.SubjectVisitId}/{item.Key.StudyInstanceUid}";
 
                     var isSucess = await SafeBussinessHelper.RunAsync(async () => await DicomDIRHelper.GenerateStudyDIRAndUploadAsync(item.ToList(), dirDic, ossFolder, _oSSService));
 
@@ -3529,9 +3529,9 @@ namespace IRaCIS.Application.Services
 
             #endregion
 
-            var query = from sv in _subjectVisitRepository.Where(t => t.Id == subjectVisitId)
+            var query = from sv in _subjectVisitRepository.Where(t => inCommand.SubjectVisitIdList.Contains(t.Id))
 
-                        select new
+                        select new DownloadVisitDto()
                         {
                             TrialId = sv.TrialId,
                             SubjectId = sv.SubjectId,
@@ -3567,9 +3567,9 @@ namespace IRaCIS.Application.Services
 
                         };
 
-            var result = query.FirstOrDefault();
+            var visitList = await query.ToListAsync();
 
-            foreach (var item in result.StudyList.SelectMany(t => t.SeriesList).SelectMany(t => t.InstanceList))
+            foreach (var item in visitList.SelectMany(t=>t.StudyList).SelectMany(t => t.SeriesList).SelectMany(t => t.InstanceList))
             {
                 var key = item.InstanceId.ToString();
                 if (dirDic.ContainsKey(key))
@@ -3580,7 +3580,7 @@ namespace IRaCIS.Application.Services
 
             var downLoadList = new ImageDownloadLog()
             {
-                DownLoadList = result.StudyList
+                DownLoadList = visitList.SelectMany(t => t.StudyList)
                 .Select(t => new ImageDownloadInfo()
                 { PatientId = t.PatientId, StudyId = t.StudyId, StudyInstanceUid = t.StudyInstanceUid, ImageCount = t.SeriesList.SelectMany(c => c.InstanceList).Count() }).ToList()
             };
@@ -3590,16 +3590,15 @@ namespace IRaCIS.Application.Services
                 DownLoadListStr = downLoadList.ToJsonStr(),
                 Id = NewId.NextSequentialGuid(),
                 IP = _userInfo.IP,
-                SubjectVisitId = subjectVisitId,
                 DownloadStartTime = DateTime.Now,
-                StudyCount = result.StudyList.Count(),
+                StudyCount = visitList.SelectMany(t => t.StudyList).Count(),
-                ImageCount = result.StudyList.Sum(s => s.SeriesList.Sum(s => s.InstanceList.Count())),
+                ImageCount = visitList.SelectMany(t => t.StudyList).Sum(s => s.SeriesList.Sum(s => s.InstanceList.Count())),
-                ImageSize = result.StudyList.Sum(t => t.SeriesList.Sum(s => s.InstanceList.Sum(i => i.FileSize))) ?? 0
+                ImageSize = visitList.SelectMany(t => t.StudyList).Sum(t => t.SeriesList.Sum(s => s.InstanceList.Sum(i => i.FileSize))) ?? 0
             };
 
             await _subejctVisitDownloadRepository.AddAsync(preDownloadInfo, true);
 
-            return ResponseOutput.Ok(result, preDownloadInfo.Id);
+            return ResponseOutput.Ok(visitList, preDownloadInfo.Id);
         }
 
         /// <summary>