add thumbnail download to downloader

Server/Functions/Downloader.cs

@@ -502,9 +502,30 @@ namespace youtube_downloader.Server.Functions
             List<SavedMedia> media = new List<SavedMedia>();
             try
             {
-                await DL.ytc.Search.GetVideosAsync(text).ForEachAsync((e) => { media.Add(new SavedMedia() { Title = e.Title, Id = e.Id, Kind = InfoType.Video }); });
-                await DL.ytc.Search.GetPlaylistsAsync(text).ForEachAsync((e) => { media.Add(new SavedMedia() { Title = e.Title, Id = e.Id, Kind = InfoType.Playlist }); });
-                await DL.ytc.Search.GetChannelsAsync(text).ForEachAsync((e) => { media.Add(new SavedMedia() { Title = e.Title, Id = e.Id, Kind = InfoType.Channel }); });
+                await DL.ytc.Search.GetVideosAsync(text).ForEachAsync((e) => { 
+                    foreach(var t in e.Thumbnails)
+                    {
+                        DL._DownloadThumbnail(t.Resolution.Width, t.Resolution.Height, e.Id, t.Url);
+                    }
+                    media.Add(new SavedMedia() {Title = e.Title, Id = e.Id, Kind = InfoType.Video }); 
+                
+                });
+                await DL.ytc.Search.GetPlaylistsAsync(text).ForEachAsync((e) => {
+                    foreach (var t in e.Thumbnails)
+                    {
+                        DL._DownloadThumbnail(t.Resolution.Width, t.Resolution.Height, e.Id, t.Url);
+                    }
+                    media.Add(new SavedMedia() { Title = e.Title, Id = e.Id, Kind = InfoType.Playlist }); 
+                
+                });
+                await DL.ytc.Search.GetChannelsAsync(text).ForEachAsync((e) => {
+                    foreach (var t in e.Thumbnails)
+                    {
+                        DL._DownloadThumbnail(t.Resolution.Width, t.Resolution.Height, e.Id, t.Url);
+                    }
+                    media.Add(new SavedMedia() { Title = e.Title, Id = e.Id, Kind = InfoType.Channel }); 
+                
+                });
             }catch (Exception ex)
             {
                 _ = ex;