fix: detect followed playlists correctly in header

Load owner+subscriber playlists, track all playlist IDs for follow-state resolution, and keep audio ring buffer at 32k as requested.

src/backend/qobuzbackend.hpp

@@ -45,7 +45,7 @@ public:
     void getFavTracks(quint32 offset = 0, quint32 limit = 500);
     void getFavAlbums(quint32 offset = 0, quint32 limit = 200);
     void getFavArtists(quint32 offset = 0, quint32 limit = 200);
-    void getUserPlaylists(quint32 offset = 0, quint32 limit = 200);
+    void getUserPlaylists(quint32 offset = 0, quint32 limit = 350);
 
     // --- playback options ---
     void setReplayGain(bool enabled);

src/list/library.cpp

@@ -99,6 +99,7 @@ void Library::onUserPlaylistsLoaded(const QJsonObject &result)
     while (m_playlistsNode->childCount() > 0)
         delete m_playlistsNode->takeChild(0);
 
+    QSet<qint64> allPlaylistIds;
     QVector<QPair<qint64, QString>> editablePlaylists;
     const qint64 myUserId = AppSettings::instance().userId();
     const QJsonArray items = result["items"].toArray();
@@ -109,6 +110,9 @@ void Library::onUserPlaylistsLoaded(const QJsonObject &result)
         const qint64      ownId = static_cast<qint64>(pl["owner"].toObject()["id"].toDouble());
         const bool        isOwner = (myUserId > 0 && ownId == myUserId);
 
+        if (id > 0)
+            allPlaylistIds.insert(id);
+
         auto *item = new QTreeWidgetItem(m_playlistsNode, QStringList{name});
         item->setData(0, TypeRole,    NodePlaylist);
         item->setData(0, IdRole,      id);
@@ -120,6 +124,7 @@ void Library::onUserPlaylistsLoaded(const QJsonObject &result)
             editablePlaylists.append({id, name});
     }
 
+    emit userPlaylistIdsChanged(allPlaylistIds);
     emit userPlaylistsChanged(editablePlaylists);
 }
 

src/list/library.hpp

@@ -7,6 +7,7 @@
 #include <QVector>
 #include <QPair>
 #include <QString>
+#include <QSet>
 
 namespace List
 {
@@ -31,6 +32,8 @@ namespace List
         void playlistRequested(qint64 playlistId, const QString &name);
         /// Emitted after playlists are loaded so others can cache the list.
         void userPlaylistsChanged(const QVector<QPair<qint64, QString>> &playlists);
+        /// Emitted with all user playlist IDs (owned + subscribed).
+        void userPlaylistIdsChanged(const QSet<qint64> &playlistIds);
         /// Emitted when the currently open playlist was deleted.
         void openPlaylistDeleted();
 

src/mainwindow.cpp

@@ -128,12 +128,14 @@ MainWindow::MainWindow(QobuzBackend *backend, QWidget *parent)
         statusBar()->showMessage(tr("Track added to playlist"), 3000);
     });
     connect(m_backend, &QobuzBackend::playlistSubscribed, this, [this](qint64 playlistId) {
+        m_userPlaylistIds.insert(playlistId);
         m_library->refresh();
         if (m_content->tracksList()->playlistId() == playlistId)
             m_content->setCurrentPlaylistFollowed(true);
         statusBar()->showMessage(tr("Playlist followed"), 3000);
     });
     connect(m_backend, &QobuzBackend::playlistUnsubscribed, this, [this](qint64 playlistId) {
+        m_userPlaylistIds.remove(playlistId);
         m_library->refresh();
         if (m_content->tracksList()->playlistId() == playlistId)
             m_content->setCurrentPlaylistFollowed(false);
@@ -145,6 +147,10 @@ MainWindow::MainWindow(QobuzBackend *backend, QWidget *parent)
     });
 
     // ---- Library signals ----
+    connect(m_library, &List::Library::userPlaylistIdsChanged,
+            this, [this](const QSet<qint64> &playlistIds) {
+        m_userPlaylistIds = playlistIds;
+    });
     connect(m_library, &List::Library::userPlaylistsChanged,
             this, &MainWindow::onUserPlaylistsChanged);
     connect(m_library, &List::Library::openPlaylistDeleted,
@@ -536,12 +542,12 @@ void MainWindow::onPlaylistLoaded(const QJsonObject &playlist)
     const qint64 myId = AppSettings::instance().userId();
     const bool isOwned = (myId > 0 && ownerId == myId);
 
-    bool isFollowed = false;
-    for (const auto &pl : m_userPlaylists) {
-        if (pl.first == id) {
-            isFollowed = true;
-            break;
-        }
+    bool isFollowed = isOwned || m_userPlaylistIds.contains(id);
+    if (!isFollowed) {
+        if (playlist.contains("is_subscribed"))
+            isFollowed = playlist["is_subscribed"].toBool();
+        else if (playlist.contains("subscribed_at"))
+            isFollowed = !playlist["subscribed_at"].isNull();
     }
 
     m_content->showPlaylist(playlist, isFollowed, isOwned);

src/mainwindow.hpp

@@ -55,6 +55,7 @@ private:
     QobuzBackend    *m_backend     = nullptr;
     PlayQueue       *m_queue       = nullptr;
     QVector<QPair<qint64, QString>> m_userPlaylists;
+    QSet<qint64> m_userPlaylistIds;
     QSet<QString> m_favAlbumIds;
     QSet<qint64> m_favArtistIds;
     bool m_showFavAlbumsOnLoad = false;