Fix QBit Import Path for Single File Torrents

server/RdtClient.Service.Test/Services/QBittorrentTest.cs

@@ -1,5 +1,7 @@
 using Microsoft.Extensions.Logging;
 using Moq;
+using System.Text.Json;
+using RdtClient.Data.Data;
 using RdtClient.Data.Enums;
 using RdtClient.Data.Models.Data;
 using RdtClient.Data.Models.DebridClient;
@@ -208,4 +210,58 @@ public class QBittorrentTest
         Assert.NotNull(result);
         Assert.False(result!.IsPrivate);
     }
+
+    [Fact]
+    public async Task TorrentInfo_ShouldUseSelectedTopLevelFileName_WhenRootFileAddsOnlyTheExtension()
+    {
+        // Arrange
+        var previousMappedPath = SettingData.Get.DownloadClient.MappedPath;
+        SettingData.Get.DownloadClient.MappedPath = "/data/downloads";
+
+        try
+        {
+            var torrentRootName = "Example.Series.S01E01.1080p.WEB-DL-GROUP";
+            var selectedFileName = $"{torrentRootName}.mkv";
+
+            var torrent = new Torrent
+            {
+                Hash = "hash1",
+                Category = "tv",
+                Completed = DateTimeOffset.UtcNow,
+                RdName = torrentRootName,
+                RdFiles = JsonSerializer.Serialize(new List<DebridClientFile>
+                {
+                    new()
+                    {
+                        Id = 1,
+                        Path = $"/{selectedFileName}",
+                        Bytes = 1000,
+                        Selected = true
+                    },
+                    new()
+                    {
+                        Id = 2,
+                        Path = $"/{torrentRootName}.nfo",
+                        Bytes = 10,
+                        Selected = false
+                    }
+                }),
+                Type = DownloadType.Torrent
+            };
+
+            _torrentsMock.Setup(m => m.Get()).ReturnsAsync(new List<Torrent> { torrent });
+
+            // Act
+            var result = await _qBittorrent.TorrentInfo();
+
+            // Assert
+            Assert.Single(result);
+            Assert.Equal(Path.Combine("/data/downloads", "tv", selectedFileName) + Path.DirectorySeparatorChar, result[0].ContentPath);
+            Assert.Equal(torrentRootName, result[0].Name);
+        }
+        finally
+        {
+            SettingData.Get.DownloadClient.MappedPath = previousMappedPath;
+        }
+    }
 }

server/RdtClient.Service/Services/QBittorrent.cs

@@ -204,6 +204,7 @@ public class QBittorrent(ILogger<QBittorrent> logger, Settings settings, Authent
             }
 
             var torrentPath = downloadPath;
+            var contentPathName = GetContentPathName(torrent);
 
             if (!String.IsNullOrWhiteSpace(torrent.RdName))
             {
@@ -214,7 +215,7 @@ public class QBittorrent(ILogger<QBittorrent> logger, Settings settings, Authent
                 }
                 else
                 {
-                    torrentPath = Path.Combine(downloadPath, torrent.RdName) + Path.DirectorySeparatorChar;
+                    torrentPath = Path.Combine(downloadPath, contentPathName) + Path.DirectorySeparatorChar;
                 }
             }
 
@@ -328,6 +329,37 @@ public class QBittorrent(ILogger<QBittorrent> logger, Settings settings, Authent
         return results;
     }
 
+    private static String GetContentPathName(Torrent torrent)
+    {
+        if (String.IsNullOrWhiteSpace(torrent.RdName))
+        {
+            return torrent.RdName ?? String.Empty;
+        }
+
+        var topLevelSelectedFiles = torrent.Files
+                                          .Where(m => m.Selected && !String.IsNullOrWhiteSpace(m.Path))
+                                          .Select(m => m.Path.Trim('/').Trim('\\'))
+                                          .Where(m => m.IndexOfAny(['/', '\\']) < 0)
+                                          .Select(Path.GetFileName)
+                                          .Where(m => !String.IsNullOrWhiteSpace(m))
+                                          .Distinct(StringComparer.OrdinalIgnoreCase)
+                                          .ToList();
+
+        if (topLevelSelectedFiles.Count == 1)
+        {
+            var selectedFileName = topLevelSelectedFiles[0]!;
+            var selectedFileBaseName = Path.GetFileNameWithoutExtension(selectedFileName);
+
+            if (!String.IsNullOrWhiteSpace(selectedFileBaseName) &&
+                selectedFileBaseName.Equals(torrent.RdName, StringComparison.OrdinalIgnoreCase))
+            {
+                return selectedFileName;
+            }
+        }
+
+        return torrent.RdName;
+    }
+
     public async Task<IList<TorrentFileItem>?> TorrentFileContents(String hash)
     {
         var torrent = await torrents.GetByHash(hash);