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PlaylistShared.Pwa/Extensions/LongExtensions.cs

@@ -5,11 +5,33 @@ public static class LongExtensions
     /// <summary>
     /// Преобразует миллисекунды в формат Минуты:Секунды
     /// </summary>
-    public static string FormatDuration(this long ms)
+    public static string FormatDuration(this long ms, FormatDurationType format = FormatDurationType.mmss)
     {
         var seconds = ms / 1000;
-        var mins = seconds / 60;
+
-        var secs = seconds % 60;
+        var mm = seconds / 60;
-        return $"{mins}:{secs:D2}";
+        var ss = seconds % 60;
+
+        if (format == FormatDurationType.mmss || mm < 60)
+        {
+            return $"{mm}:{ss:D2}";
+        }
+        else if (format == FormatDurationType.hhmmss)
+        {
+            var hh = mm / 60;
+            mm = mm / 60;
+
+            return $"{hh}:{mm:D2}:{ss:D2}";
+        }
+        else
+        {
+            return $"{mm}:{ss:D2}";
+        }
+    }
+
+    public enum FormatDurationType
+    {
+        mmss,
+        hhmmss,
     }
 }

PlaylistShared.Pwa/Pages/SharedPlaylistView.razor

@@ -45,6 +45,11 @@
                                     <MudIconButton Icon="@Icons.Material.Filled.Share"
                                                 OnClick="SharePlaylist" 
                                                 Size="Size.Medium" />
+
+                                    <MudIconButton Icon="@CustomIcons.Yandex" 
+                                               Href="@($"https://music.yandex.ru/playlists/{_playlist?.YandexPlaylistUuid}")"
+                                               Target="_blank"
+                                               Size="Size.Medium" />
                                     
                                     @if (_isCreator && _isAuthenticated)
                                     {
@@ -127,6 +132,12 @@
                                     <MudMenuItem Icon="@Icons.Material.Filled.Share" 
                                                  OnClick="SharePlaylist" 
                                                  Label="Поделиться" />
+                                                 
+                                    <MudMenuItem Icon="@CustomIcons.Yandex" 
+                                                Href="@($"https://music.yandex.ru/playlists/{_playlist?.YandexPlaylistUuid}")"
+                                                 Label="Открыть в ЯМ"
+                                               Target="_blank" />
+
                                     @if (_isCreator && _isAuthenticated)
                                     {
                                     <MudMenuItem Icon="@Icons.Material.Filled.Settings" 
@@ -186,9 +197,22 @@
                     <MudImage Src="@_playlist.CoverUrl.FormatCoverUrl(60, 60)" Height="60" Width="60" Class="rounded shadow-sm" />
                 }
 
-                <MudText Typo="Typo.h6" Color="Color.Primary">
+                <MudStack Spacing="0" Class="pb-1">
-                    @_playlist?.Title
+                    <MudText Typo="Typo.h6" Color="Color.Primary">
-                </MudText>
+                        @_playlist?.Title
+                    </MudText>
+
+                    @if (_tracksLoading)
+                    {
+                        <MudSkeleton Width="200px" Height="20px" SkeletonType="SkeletonType.Text" />
+                    }
+                    else
+                    {
+                        <MudText Typo="Typo.caption" Color="Color.Secondary">
+                                @($"Треков: {_playlistTrackCount} • Продолжительность: {_playlistDurationMs.FormatDuration(LongExtensions.FormatDurationType.hhmmss)}")
+                        </MudText>   
+                    }
+                </MudStack>
             </MudStack>
         }
     };
@@ -405,6 +429,14 @@
     /// Список добавленных в плейлист треков.
     /// </summary>
     private List<YandexTrack> _tracks = new();
+    /// <summary>
+    /// Продолжительность плейлиста.
+    /// </summary>
+    long _playlistDurationMs;
+    /// <summary>
+    /// Кол-во треков в ПЛ.
+    /// </summary>
+    int _playlistTrackCount;
 
     /// <summary>Свойства плейлиста.</summary>
     private SharedPlaylistDto? _playlist;
@@ -554,7 +586,9 @@
             if (response?.Success == true && response.Data != null)
             {
                 _tracks = response.Data.Tracks;
-                await GenerateUniqTrackIds();
+                _existingTrackIds = _tracks.Select(t => t.TrackId).ToHashSet();
+                _playlistDurationMs = _tracks.Sum(t => t.DurationMs);
+                _playlistTrackCount = _tracks.Count();
             }
             else
             {
@@ -573,11 +607,6 @@
         }
     }
 
-    private async Task GenerateUniqTrackIds()
-    {
-        _existingTrackIds = _tracks.Select(t => t.TrackId).ToHashSet();
-    }
-
     /// <summary>Удаление трека из списка плейлиста</summary>
     private async Task OnRemoveTrack(YandexTrack track)
     {
@@ -607,7 +636,9 @@
             {
                 Snackbar.Add($"Трек \"{track.Title}\" добавлен", Severity.Success, c => c.SnackbarVariant = Variant.Outlined);
                 _tracks.Insert(0, track);
-                await GenerateUniqTrackIds();
+                _existingTrackIds.Add(track.TrackId);
+                _playlistDurationMs += track.DurationMs;
+                _playlistTrackCount += 1;
             }
             else
             {
@@ -636,7 +667,9 @@
             {
                 Snackbar.Add("Трек удалён", Severity.Success);
                 _tracks.Remove(track);
-                await GenerateUniqTrackIds();
+                _existingTrackIds.Remove(track.TrackId);
+                _playlistDurationMs -= track.DurationMs;
+                _playlistTrackCount -= 1;
             }
             else
             {