Fix a few bugs and unimplemented features

* Show the now playing cover when playing an item, otherwise show the
  collection cover.
* ItemModelLoaders now correctly expose list properties of non-built-in
  Qt objects
* toString is now implemented for lists, fixing some query
  construction code.
* PlaybackManager now clears the playlist when playing a single item to
  prevent weird behaviour.
* The covers are slightly updated.

core/src/apiclient.cpp

@@ -438,7 +438,7 @@ void ApiClient::generateDeviceProfile() {
     clientCapabilities->setIconUrl("https://chris.netsoj.nl/static/img/logo.png");
     clientCapabilities->setSupportsPersistentIdentifier(true);
     clientCapabilities->setSupportsSync(false);
-    clientCapabilities->setSupportsMediaControl(false);
+    clientCapabilities->setSupportsMediaControl(true);
     clientCapabilities->setSupportsContentUploading(false);
 
     d->clientCapabilities = clientCapabilities;

core/src/apimodel.cpp

@@ -23,6 +23,8 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 #include "JellyfinQt/dto/useritemdatadto.h"
 #include "JellyfinQt/dto/userdto.h"
 
+Q_LOGGING_CATEGORY(jellyfinApiModel, "jellyfin.apimodel")
+
 namespace Jellyfin {
 
 // BaseApiModel
@@ -46,7 +48,7 @@ void BaseModelLoader::componentComplete() {
 
 void BaseModelLoader::autoReloadIfNeeded() {
     if (m_autoReload && canReload()) {
-        qDebug() << "reloading due to 'autoReloadIfNeeded()'";
+        qCDebug(jellyfinApiModel) << "reloading due to 'autoReloadIfNeeded()'";
         emit reloadWanted();
     }
 }
@@ -57,14 +59,14 @@ void BaseModelLoader::setApiClient(ApiClient *newApiClient) {
     if (changed) {
         emit apiClientChanged(newApiClient);
     }
+    autoReloadIfNeeded();
 }
 
 void BaseModelLoader::setLimit(int newLimit) {
-    int oldLimit = this->m_limit;
-    m_limit = newLimit;
-    if (oldLimit != newLimit) {
-        emit limitChanged(this->m_limit);
-    }
+    m_explicitLimitSet = newLimit >= 0;
+    qCDebug(jellyfinApiModel) << "Limit explicitly set to " << newLimit;
+    this->m_limit = newLimit;
+    emit limitChanged(newLimit);
 }
 
 void BaseModelLoader::setAutoReload(bool newAutoReload) {
@@ -90,7 +92,7 @@ bool BaseModelLoader::canReload() const {
 }
 
 void BaseApiModel::reload() {
-    qWarning() << " BaseApiModel slot called instead of overloaded method";
+    qCWarning(jellyfinApiModel) << " BaseApiModel slot called instead of overloaded method";
 }
 
 // Parameters injectors and result extractors

core/src/jellyfin.cpp

@@ -75,6 +75,7 @@ void JellyfinPlugin::registerTypes(const char *uri) {
     qmlRegisterType<ViewModel::ResumeItemsLoader>(uri, 1, 0, "ResumeItemsLoader");
     qmlRegisterType<ViewModel::ShowSeasonsLoader>(uri, 1, 0, "ShowSeasonsLoader");
     qmlRegisterType<ViewModel::ShowEpisodesLoader>(uri, 1, 0, "ShowEpisodesLoader");
+    qmlRegisterType<ViewModel::NextUpLoader>(uri, 1, 0, "NextUpLoader");
     qmlRegisterType<ViewModel::PublicUsersLoader>(uri, 1, 0, "PublicUsersLoader");
 
     // Enumerations

core/src/model/playlist.cpp

@@ -144,6 +144,14 @@ void Playlist::appendToList(ViewModel::ItemModel &model) {
     reshuffle();
 }
 
+void Playlist::appendToList(QSharedPointer<Model::Item> item) {
+    int start = m_list.size();
+    emit beforeItemsAddedToList(start, 1);
+    m_list.append(item);
+    emit itemsAddedToList();
+    reshuffle();
+}
+
 void Playlist::reshuffle() {
     if (m_shuffler->canShuffleInAdvance()) {
         m_shuffler->shuffleInAdvance();

core/src/viewmodel/itemmodel.cpp

@@ -54,6 +54,9 @@ ShowSeasonsLoader::ShowSeasonsLoader(QObject *parent)
 ShowEpisodesLoader::ShowEpisodesLoader(QObject *parent)
     : ShowEpisodesLoaderBase(new Jellyfin::Loader::HTTP::GetEpisodesLoader(), parent) {}
 
+NextUpLoader::NextUpLoader(QObject *parent)
+    : NextUpLoaderBase(new Jellyfin::Loader::HTTP::GetNextUpLoader(), parent) {}
+
 ItemModel::ItemModel(QObject *parent)
     : ApiModel<Model::Item>(parent) { }
 
@@ -86,6 +89,7 @@ QVariant ItemModel::data(const QModelIndex &index, int role) const {
     JF_CASE(artists)
     case RoleNames::isFolder:
         return QVariant(item->isFolder().value_or(false));
+    JF_CASE(overview)
     case RoleNames::parentIndexNumber:
         return QVariant(item->parentIndexNumber().value_or(1));
     // UserData

core/src/viewmodel/playbackmanager.cpp

@@ -156,7 +156,9 @@ void PlaybackManager::mediaPlayerMediaStatusChanged(QMediaPlayer::MediaStatus ne
             m_mediaPlayer->setPosition(m_resumePosition / MS_TICK_FACTOR);
         }
     } else if (newStatus == QMediaPlayer::EndOfMedia) {
-        next();
+        if (m_queue->hasNext() && m_queue->totalSize() > 1) {
+            next();
+        }
     }
 }
 
@@ -178,6 +180,8 @@ void PlaybackManager::updatePlaybackInfo() {
 }
 
 void PlaybackManager::playItem(Item *item) {
+    m_queue->clearList();
+    m_queue->appendToList(item->data());
     setItem(item->data());
     emit hasNextChanged(m_queue->hasNext());
     emit hasPreviousChanged(m_queue->hasPrevious());