fix: multi download problem

Author: mateof

TelegramDownloader/Controllers/FileController.cs

@@ -17,6 +17,7 @@
 using System.Linq;
 using System.Net;
 using System.Net.Http.Headers;
+using System.Runtime.CompilerServices;
 using System.Runtime.Serialization.Formatters.Binary;
 using System.Web;
 using System.Xml.Linq;
@@ -278,9 +279,13 @@ public async Task<IActionResult> GetFileByTfmId(string id, [FromQuery] string id
                 return new ObjectResult("") { StatusCode = (int)HttpStatusCode.NotFound };
             }
             var file = _fs.ExistFileIntempFolder($"{idChannel}-{(dbFile.MessageId != null ? dbFile.MessageId.ToString() : dbFile.Id)}-{id}");
-            if (file == null)
+            dbFile.Name = $"{idChannel}-{(dbFile.MessageId != null ? dbFile.MessageId.ToString() : dbFile.Id)}-{id}";
+            String path = Path.Combine(FileService.TEMPDIR, "_temp");
+            String filePath = Path.Combine(path, dbFile.Name);
+            if (file == null && !_tis.isFileDownloaded(path))
             {
-                _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}"));
+                
+                await _fs.downloadFile(idChannel, new List<Syncfusion.Blazor.FileManager.FileManagerDirectoryContent> { dbFile.toFileManagerContent() }, path);
                 //TL.Message idM = await _ts.getMessageFile(idChannel, Convert.ToInt32(dbFile.MessageId));
                 //ChatMessages cm = new ChatMessages();
                 //cm.message = idM;

TelegramDownloader/Data/FileService.cs

@@ -763,12 +763,12 @@ private async Task downloadSplitFiles(FileManagerDirectoryContent itemFile, Bson
             List<string> splitPaths = new List<string>();
             foreach (int messageId in file.ListMessageId)
             {
-                string filePathPart = System.IO.Path.Combine(currentFilePath, $"({i})" + itemFile.Name);
-                await downloadFromTelegram(dbName, messageId, filePathPart, file, true);
+                string filePathPart = Path.Combine(currentFilePath, $"({i})" + itemFile.Name);
+                await downloadFromTelegram(dbName, messageId, filePathPart, file, true, Path.Combine(currentFilePath, itemFile.Name));
                 splitPaths.Add(filePathPart);
                 i++;
             }
-            await mergeFileStreamAsync(splitPaths, System.IO.Path.Combine(currentFilePath, itemFile.Name));
+            await mergeFileStreamAsync(splitPaths, Path.Combine(currentFilePath, itemFile.Name));
             foreach (string filePath in splitPaths)
             {
                 File.Delete(filePath);
@@ -800,9 +800,10 @@ public static void functionCalll(string dbName, int messageId, string destPath)
         {
 
         }
-        private async Task downloadFromTelegram(string dbName, int messageId, string destPath, BsonFileManagerModel file = null, bool shouldWait = false)
+        private async Task downloadFromTelegram(string dbName, int messageId, string destPath, BsonFileManagerModel file = null, bool shouldWait = false, string path = null)
         {
             DownloadModel model = new DownloadModel();
+            model.path = path ?? destPath;
             model.tis = _tis;
             if (file != null)
             {

TelegramDownloader/Models/DownloadModel.cs

@@ -133,6 +133,7 @@ public class DownloadModel
         public string idTask { get; set; }
         public ChatMessages m {  get; set; }
         public string name { get; set; }
+        public string path { get; set; }
         public Callbacks callbacks { get; set; }
 
         public long _size { get; set; }

TelegramDownloader/Services/TransactionInfoService.cs

@@ -47,6 +47,11 @@ public bool isWorking()
             return true;
         }
 
+        public bool isFileDownloaded(String path)
+        {
+            return downloadModels.Any(x => x.path == path);
+        }
+
         public bool isUploading()
         {
             return uploadModels.Where(x => x.state == StateTask.Working).Count() > 0;