fix: solve download multi part file for stream

Author: mateof

TelegramDownloader/Controllers/FileController.cs

@@ -277,23 +277,29 @@ public async Task<IActionResult> GetFileByTfmId(string id, [FromQuery] string id
             {
                 return new ObjectResult("") { StatusCode = (int)HttpStatusCode.NotFound };
             }
-            var file = _fs.ExistFileIntempFolder($"{idChannel}-{dbFile.MessageId}-{id}");
+            var file = _fs.ExistFileIntempFolder($"{idChannel}-{(dbFile.MessageId != null ? dbFile.MessageId.ToString() : dbFile.Id)}-{id}");
             if (file == null)
             {
-                TL.Message idM = await _ts.getMessageFile(idChannel, Convert.ToInt32(dbFile.MessageId));
-                ChatMessages cm = new ChatMessages();
-                cm.message = idM;
-                file = new FileStream(System.IO.Path.Combine(FileService.TEMPDIR, "_temp", $"{idChannel}-{idFile}-{id}"), FileMode.Create, FileAccess.ReadWrite);
-                DownloadModel dm = new DownloadModel();
-                dm.tis = _tis;
-                dm.channelName = _ts.getChatName(Convert.ToInt64(idChannel));
-                _tis.addToDownloadList(dm);
-                await _ts.DownloadFileAndReturn(cm, file, model: dm);
-                file.Position = 0;
+                _fs.downloadFile(idChannel, new List<Syncfusion.Blazor.FileManager.FileManagerDirectoryContent> { dbFile.toFileManagerContent() }, System.IO.Path.Combine(FileService.TEMPDIR, "_temp", $"{idChannel}-{(dbFile.MessageId != null ? dbFile.MessageId.ToString() : dbFile.Id)}-{id}"));
+                //TL.Message idM = await _ts.getMessageFile(idChannel, Convert.ToInt32(dbFile.MessageId));
+                //ChatMessages cm = new ChatMessages();
+                //cm.message = idM;
+                //file = new FileStream(System.IO.Path.Combine(FileService.TEMPDIR, "_temp", $"{idChannel}-{idFile}-{id}"), FileMode.Create, FileAccess.ReadWrite);
+                //DownloadModel dm = new DownloadModel();
+                //dm.tis = _tis;
+                //dm.channelName = _ts.getChatName(Convert.ToInt64(idChannel));
+                //_tis.addToDownloadList(dm);
+                //await _ts.DownloadFileAndReturn(cm, file, model: dm);
+                //file.Position = 0;
             }
 
-            Response.Headers["Content-Disposition"] = $"inline; filename=\"{HttpUtility.UrlEncode(fileName)}\"";
+            if (file == null)
+            {
+                return NotFound();
+            }
 
+            Response.Headers["Content-Disposition"] = $"inline; filename=\"{HttpUtility.UrlEncode(fileName)}\"";
+            
             return new FileStreamResult(file, mimeType);
         }
 

TelegramDownloader/Data/FileService.cs

@@ -1190,7 +1190,7 @@ public async Task<String> CreateStrmFiles(string path, string dbName, string hos
                         string contenido = Path.Combine(host, "api/file/GetFileStream", dbName, file.Id, "file" + file.Type).Replace("\\", "/");
                         if (GeneralConfigStatic.config.PreloadFilesOnStream || HelperService.bytesToMegaBytes(file.Size) < GeneralConfigStatic.config.MaxPreloadFileSizeInMb)
                         {
-                            contenido = Path.Combine(host, "api/file/GetFile", Uri.EscapeDataString(file.Name)).Replace("\\", "/") + $"?idChannel={dbName}&idFile={file.Id}";
+                            contenido = Path.Combine(host, "api/file/GetFileByTfmId", Uri.EscapeDataString(file.Name)).Replace("\\", "/") + $"?idChannel={dbName}&idFile={file.Id}";
                         }
                         string pattern = $@"\.({file.Type.Replace(".", "")})$";
                         File.WriteAllText(Regex.Replace(filePath, pattern, ".strm"), contenido);