Merge branch 'develop' for release v3.56.0

SUBSONIC.md

@@ -1,9 +1,12 @@
 # Subsonic API
 The API version implemented is 1.16.0 and has been tested on _Android_ using _Subsonic Player_, _Ultrasonic_, _Symfonium_, and _DSub_.
-Since _LMS_ uses metadata tags to organize music, a compatibility mode is used to browse the collection when using the directory browsing commands.
+
+Folder navigation commands are supported. However, since _LMS_ does not store information for each folder, it is not possible to star/unstar folders considered as artists.
+Given the API limitations of folder navigation commands, it is recommended to place all tracks of an album in the same folder and not to mix multiple albums in the same folder.
+
 The Subsonic API is enabled by default.
 
-__Note__: since _LMS_ may store hashed and salted passwords or may forward authentication requests to external services, it cannot handle the __token authentication__ method. You may need to check your client to make sure to use the __password__ authentication method.
+__Note__: since _LMS_ may store hashed and salted passwords or may forward authentication requests to external services, it cannot handle the __token authentication__ method. You may need to check your client to make sure to use the __password__ authentication method. Since logins/passwords are passed in plain text through URLs, it is highly recommended to use a unique password when using the Subsonic API. Note that this may affect the use of authentication via PAM. In any case, ensure that read access to the web server logs (and to the proxy, if applicable) is well protected.
 
 # OpenSubsonic API
 OpenSubsonic is an initiative to patch and extend the legacy Subsonic API. You'll find more details in the [official documentation](https://opensubsonic.netlify.app/)

approot/messages.xml

@@ -121,6 +121,7 @@
 <message id="Lms.Admin.ScannerController.step-removing-orphaned-entries">Removing orphaned entries: {1} entries...</message>
 <message id="Lms.Admin.ScannerController.step-scanning-files">Scanning files: {1}/{2} ({3}%)...</message>
 <message id="Lms.Admin.ScannerController.step-status">Step status</message>
+<message id="Lms.Admin.ScannerController.step-updating-library-fields">Updating library fields: {1} entries</message>
 
 <!--Tracing-->
 <message id="Lms.Admin.Tracing.export-current-buffer">Export traces</message>

approot/messages_fr.xml

@@ -121,6 +121,7 @@
 <message id="Lms.Admin.ScannerController.step-removing-orphaned-entries">Retrait des entrées orphelines: {1} entrées...</message>
 <message id="Lms.Admin.ScannerController.step-scanning-files">Scan des fichiers : {1}/{2} ({3}%)...</message>
 <message id="Lms.Admin.ScannerController.step-status">Statut de l'étape</message>
+<message id="Lms.Admin.ScannerController.step-updating-library-fields">Mise à jour des champs des bibliothèques: {1} entrées</message>
 
 <!--Tracing-->
 <message id="Lms.Admin.Tracing.export-current-buffer">Exporter les traces</message>

approot/messages_it.xml

@@ -121,6 +121,7 @@
 <message id="Lms.Admin.ScannerController.step-removing-orphaned-entries">Rimozione voci orfane: {1} voci...</message>
 <message id="Lms.Admin.ScannerController.step-scanning-files">Scansione dei file: {1}/{2} ({3}%)...</message>
 <message id="Lms.Admin.ScannerController.step-status">Stato passo</message>
+<message id="Lms.Admin.ScannerController.step-updating-library-fields">Aggiornamento dei campi della libreria: {1} voci</message>
 
 <!--Tracing-->
 <message id="Lms.Admin.Tracing.export-current-buffer">Esporta tracce</message>

approot/messages_pl.xml

@@ -138,6 +138,7 @@
 <message id="Lms.Admin.ScannerController.step-removing-orphaned-entries">Usuwanie osieroconych wpisów: {1} wpisów...</message>
 <message id="Lms.Admin.ScannerController.step-scanning-files">Skanowanie plików: {1}/{2} ({3}%)...</message>
 <message id="Lms.Admin.ScannerController.step-status">Obecny krok</message>
+<message id="Lms.Admin.ScannerController.step-updating-library-fields">Aktualizowanie pól biblioteki: {1} wpisów</message>
 
 <!--Tracing-->
 <message id="Lms.Admin.Tracing.export-current-buffer">Eksportuj ślady</message>

approot/messages_zh.xml

@@ -122,6 +122,7 @@
 <message id="Lms.Admin.ScannerController.step-scanning-files">扫描文件中: {1}/{2} 个文件 ({3}%)...</message>
 <message id="Lms.Admin.ScannerController.step-status">当前步骤状态</message>
 
+
 <!--Tracing-->
 
 

src/libs/database/impl/Artist.cpp

@@ -183,10 +183,10 @@ namespace lms::db
     } // namespace
 
     Artist::Artist(const std::string& name, const std::optional<core::UUID>& MBID)
-        : _name{ std::string(name, 0, _maxNameLength) }
-        , _sortName{ _name }
-        , _MBID{ MBID ? MBID->getAsString() : "" }
+        : _MBID{ MBID ? MBID->getAsString() : "" }
     {
+        setName(name);
+        _sortName = _name;
     }
 
     Artist::pointer Artist::create(Session& session, const std::string& name, const std::optional<core::UUID>& MBID)
@@ -360,9 +360,19 @@ namespace lms::db
         return res;
     }
 
-    void Artist::setSortName(const std::string& sortName)
+    void Artist::setName(std::string_view name)
     {
-        _sortName = std::string(sortName, 0, _maxNameLength);
+        _name.assign(name, 0, _maxNameLength);
+        if (name.size() > _maxNameLength)
+            LMS_LOG(DB, WARNING, "Artist name too long, truncated to '" << _name << "'");
+    }
+
+    void Artist::setSortName(std::string_view sortName)
+    {
+        _sortName.assign(sortName, 0, _maxNameLength);
+
+        if (sortName.size() > _maxNameLength)
+            LMS_LOG(DB, WARNING, "Artist sort name too long, truncated to '" << _sortName << "'");
     }
 
     void Artist::setImage(ObjectPtr<Image> image)

src/libs/database/impl/Cluster.cpp

@@ -96,9 +96,12 @@ namespace lms::db
     } // namespace
 
     Cluster::Cluster(ObjectPtr<ClusterType> type, std::string_view name)
-        : _name{ std::string{ name, 0, _maxNameLength } }
+        : _name{ name }
         , _clusterType{ getDboPtr(type) }
     {
+        // As we use the name to uniquely identify clusters and cluster types, we must throw (and not truncate)
+        if (name.size() > maxNameLength)
+            throw Exception{ "Cluster name is too long: " + std::string{ name } + "'" };
     }
 
     Cluster::pointer Cluster::create(Session& session, ObjectPtr<ClusterType> type, std::string_view name)
@@ -183,6 +186,9 @@ namespace lms::db
     ClusterType::ClusterType(std::string_view name)
         : _name{ name }
     {
+        // As we use the name to uniquely identify clusters and cluster types, we must throw
+        if (name.size() > maxNameLength)
+            throw Exception{ "ClusterType name is too long: " + std::string{ name } + "'" };
     }
 
     ClusterType::pointer ClusterType::create(Session& session, std::string_view name)
@@ -230,6 +236,9 @@ namespace lms::db
     {
         session.checkReadTransaction();
 
+        if (name.size() > maxNameLength)
+            throw Exception{ "Requested ClusterType name is too long: " + std::string{ name } + "'" };
+
         return utils::fetchQuerySingleResult(session.getDboSession()->find<ClusterType>().where("name = ?").bind(name));
     }
 
@@ -254,6 +263,9 @@ namespace lms::db
         assert(self());
         assert(session());
 
+        if (name.size() > Cluster::maxNameLength)
+            throw Exception{ "Requested Cluster name is too long: " + std::string{ name } + "'" };
+
         return utils::fetchQuerySingleResult(session()->find<Cluster>().where("name = ?").bind(name).where("cluster_type_id = ?").bind(getId()));
     }
 

src/libs/database/impl/Directory.cpp

@@ -19,6 +19,7 @@
 
 #include "database/Directory.hpp"
 
+#include "database/MediaLibrary.hpp"
 #include "database/Session.hpp"
 
 #include "IdTypeTraits.hpp"
@@ -33,10 +34,28 @@ namespace lms::db
         {
             auto query{ session.getDboSession()->query<Wt::Dbo::ptr<Directory>>("SELECT d FROM directory d") };
 
+            for (std::string_view keyword : params.keywords)
+                query.where("d.name LIKE ? ESCAPE '" ESCAPE_CHAR_STR "'").bind("%" + utils::escapeLikeKeyword(keyword) + "%");
+
+            if (params.artist.isValid()
+                || params.release.isValid())
+            {
+                query.join("track t ON t.directory_id = d.id");
+                query.groupBy("d.id");
+            }
+
+            if (params.mediaLibrary.isValid())
+                query.where("d.media_library_id = ?").bind(params.mediaLibrary);
+
+            if (params.parentDirectory.isValid())
+                query.where("d.parent_directory_id = ?").bind(params.parentDirectory);
+
+            if (params.release.isValid())
+                query.where("t.release_id = ?").bind(params.release);
+
             if (params.artist.isValid())
             {
-                query.join("track t ON t.directory_id = d.id")
-                    .join("artist a ON a.id = t_a_l.artist_id")
+                query.join("artist a ON a.id = t_a_l.artist_id")
                     .join("track_artist_link t_a_l ON t_a_l.track_id = t.id")
                     .where("a.id = ?")
                     .bind(params.artist);
@@ -57,12 +76,32 @@ namespace lms::db
                     }
                     query.where(oss.str());
                 }
-
-                query.groupBy("d.id");
             }
 
+            if (params.withNoTrack)
+                query.where("NOT EXISTS (SELECT 1 FROM track t WHERE t.directory_id = d.id)");
+
             return query;
         }
+
+        std::filesystem::path getPathWithTrailingSeparator(const std::filesystem::path& path)
+        {
+            if (path.empty())
+                return path;
+
+            // Convert the path to string
+            std::string pathStr{ path.string() };
+
+            // Check if the last character is a directory separator
+            if (pathStr.back() != std::filesystem::path::preferred_separator)
+            {
+                // If not, add the preferred separator
+                pathStr += std::filesystem::path::preferred_separator;
+            }
+
+            // Return the new path
+            return std::filesystem::path{ pathStr };
+        }
     } // namespace
 
     Directory::Directory(const std::filesystem::path& p)
@@ -108,10 +147,16 @@ namespace lms::db
         });
     }
 
+    RangeResults<Directory::pointer> Directory::find(Session& session, const FindParameters& params)
+    {
+        auto query{ createQuery(session, params) };
+        return utils::execRangeQuery<Directory::pointer>(query, params.range);
+    }
+
     void Directory::find(Session& session, const FindParameters& params, const std::function<void(const Directory::pointer&)>& func)
     {
         auto query{ createQuery(session, params) };
-        utils::forEachQueryResult(query, [&func](const Directory::pointer& dir) {
+        utils::forEachQueryRangeResult(query, params.range, [&func](const Directory::pointer& dir) {
             func(dir);
         });
     }
@@ -131,6 +176,23 @@ namespace lms::db
         return utils::execRangeQuery<DirectoryId>(query, range);
     }
 
+    RangeResults<DirectoryId> Directory::findMismatchedLibrary(Session& session, std::optional<Range> range, const std::filesystem::path& rootPath, MediaLibraryId expectedLibraryId)
+    {
+        session.checkReadTransaction();
+
+        auto query{ session.getDboSession()->query<DirectoryId>("SELECT d.id FROM directory d") };
+        query.where("d.absolute_path = ? OR d.absolute_path LIKE ?").bind(rootPath).bind(getPathWithTrailingSeparator(rootPath).string() + "%");
+        query.where("d.media_library_id <> ? OR d.media_library_id IS NULL").bind(expectedLibraryId);
+
+        return utils::execRangeQuery<DirectoryId>(query, range);
+    }
+
+    RangeResults<Directory::pointer> Directory::findRootDirectories(Session& session, std::optional<Range> range)
+    {
+        auto query{ session.getDboSession()->query<Wt::Dbo::ptr<Directory>>("SELECT d from directory d").where("d.parent_directory_id IS NULL") };
+        return utils::execRangeQuery<Directory::pointer>(query, range);
+    }
+
     void Directory::setAbsolutePath(const std::filesystem::path& p)
     {
         assert(p.is_absolute());

src/libs/database/impl/Migration.cpp

@@ -35,7 +35,7 @@ namespace lms::db
 {
     namespace
     {
-        static constexpr Version LMS_DATABASE_VERSION{ 61 };
+        static constexpr Version LMS_DATABASE_VERSION{ 62 };
     }
 
     VersionInfo::VersionInfo()
@@ -631,6 +631,39 @@ SELECT
 
     } // namespace
 
+    void migrateFromV61(Session& session)
+    {
+        // Added a media_library_id in Directory
+        session.getDboSession()->execute(R"(
+CREATE TABLE IF NOT EXISTS "directory_backup" (
+  "id" integer primary key autoincrement,
+  "version" integer not null,
+  "absolute_path" text not null,
+  "name" text not null,
+  "parent_directory_id" bigint,
+  "media_library_id" bigint,
+  constraint "fk_directory_parent_directory" foreign key ("parent_directory_id") references "directory" ("id") on delete cascade deferrable initially deferred,
+  constraint "fk_directory_media_library" foreign key ("media_library_id") references "media_library" ("id") on delete set null deferrable initially deferred
+  ))");
+
+        // Migrate data, with the new directory_id field set to null
+        session.getDboSession()->execute(R"(INSERT INTO directory_backup 
+SELECT
+ id,
+ version,
+ absolute_path,
+ name,
+ parent_directory_id,
+ NULL
+ FROM directory)");
+
+        session.getDboSession()->execute("DROP TABLE directory");
+        session.getDboSession()->execute("ALTER TABLE directory_backup RENAME TO directory");
+
+        // Just increment the scan version of the settings to make the next scheduled scan rescan everything
+        session.getDboSession()->execute("UPDATE scan_settings SET scan_version = scan_version + 1");
+    }
+
     bool doDbMigration(Session& session)
     {
         static const std::string outdatedMsg{ "Outdated database, please rebuild it (delete the .db file and restart)" };
@@ -668,6 +701,7 @@ SELECT
             { 58, migrateFromV58 },
             { 59, migrateFromV59 },
             { 60, migrateFromV60 },
+            { 61, migrateFromV61 },
         };
 
         bool migrationPerformed{};

src/libs/database/impl/Release.cpp

@@ -53,7 +53,8 @@ namespace lms::db
                 || params.dateRange
                 || params.artist.isValid()
                 || params.clusters.size() == 1
-                || params.mediaLibrary.isValid())
+                || params.mediaLibrary.isValid()
+                || params.directory.isValid())
             {
                 query.join("track t ON t.release_id = r.id");
             }
@@ -61,6 +62,9 @@ namespace lms::db
             if (params.mediaLibrary.isValid())
                 query.where("t.media_library_id = ?").bind(params.mediaLibrary);
 
+            if (params.directory.isValid())
+                query.where("t.directory_id = ?").bind(params.directory);
+
             if (!params.releaseType.empty())
             {
                 query.join("release_release_type r_r_t ON r_r_t.release_id = r.id");
@@ -213,8 +217,11 @@ namespace lms::db
     } // namespace
 
     ReleaseType::ReleaseType(std::string_view name)
-        : _name{ std::string(name, 0, _maxNameLength) }
+        : _name{ name }
     {
+        // As we use the name to uniquely identoify release type, we must throw (and not truncate)
+        if (name.size() > _maxNameLength)
+            throw Exception{ "ReleaseType name is too long: " + std::string{ name } + "'" };
     }
 
     ReleaseType::pointer ReleaseType::create(Session& session, std::string_view name)
@@ -233,6 +240,9 @@ namespace lms::db
     {
         session.checkReadTransaction();
 
+        if (name.size() > _maxNameLength)
+            throw Exception{ "Requeted ReleaseType name is too long: " + std::string{ name } + "'" };
+
         return utils::fetchQuerySingleResult(session.getDboSession()->query<Wt::Dbo::ptr<ReleaseType>>("SELECT r_t from release_type r_t").where("r_t.name = ?").bind(name));
     }
 
@@ -510,6 +520,11 @@ namespace lms::db
         return getArtists().size() > 1;
     }
 
+    bool Release::hasDiscSubtitle() const
+    {
+        return utils::fetchQuerySingleResult(session()->query<int>("SELECT EXISTS (SELECT 1 FROM track WHERE disc_subtitle IS NOT NULL AND disc_subtitle <> '' AND release_id = ?)").bind(getId()));
+    }
+
     std::size_t Release::getTrackCount() const
     {
         assert(session());

src/libs/database/impl/Session.cpp

@@ -183,6 +183,7 @@ namespace lms::db
 
         _session.execute("CREATE INDEX IF NOT EXISTS directory_id_idx ON directory(id)");
         _session.execute("CREATE INDEX IF NOT EXISTS directory_path_idx ON directory(absolute_path)");
+        _session.execute("CREATE INDEX IF NOT EXISTS directory_media_library_idx ON directory(media_library_id)");
 
         _session.execute("CREATE INDEX IF NOT EXISTS image_artist_idx ON image(artist_id)");
         _session.execute("CREATE INDEX IF NOT EXISTS image_directory_idx ON image(directory_id)");
@@ -205,6 +206,7 @@ namespace lms::db
 
         _session.execute("CREATE INDEX IF NOT EXISTS track_id_idx ON track(id)");
         _session.execute("CREATE INDEX IF NOT EXISTS track_absolute_path_idx ON track(absolute_file_path)");
+        _session.execute("CREATE INDEX IF NOT EXISTS track_directory_release_idx ON track(directory_id, release_id);");
         _session.execute("CREATE INDEX IF NOT EXISTS track_name_idx ON track(name)");
         _session.execute("CREATE INDEX IF NOT EXISTS track_name_nocase_idx ON track(name COLLATE NOCASE)");
         _session.execute("CREATE INDEX IF NOT EXISTS track_mbid_idx ON track(mbid)");

src/libs/database/impl/Track.cpp

@@ -154,6 +154,9 @@ namespace lms::db
             if (params.mediaLibrary.isValid())
                 query.where("t.media_library_id = ?").bind(params.mediaLibrary);
 
+            if (params.directory.isValid())
+                query.where("t.directory_id = ?").bind(params.directory);
+
             switch (params.sortMethod)
             {
             case TrackSortMethod::None:
@@ -374,6 +377,27 @@ namespace lms::db
         _relativeFilePath = filePath;
     }
 
+    void Track::setName(std::string_view name)
+    {
+        _name = std::string{ name, 0, _maxNameLength };
+        if (name.size() > _maxNameLength)
+            LMS_LOG(DB, WARNING, "Track name too long, truncated to '" << _name << "'");
+    }
+
+    void Track::setCopyright(std::string_view copyright)
+    {
+        _copyright = std::string{ copyright, 0, _maxCopyrightLength };
+        if (copyright.size() > _maxCopyrightLength)
+            LMS_LOG(DB, WARNING, "Track copyright too long, truncated to '" << _copyright << "'");
+    }
+
+    void Track::setCopyrightURL(std::string_view copyrightURL)
+    {
+        _copyrightURL = std::string{ copyrightURL, 0, _maxCopyrightURLLength };
+        if (copyrightURL.size() > _maxCopyrightURLLength)
+            LMS_LOG(DB, WARNING, "Track copyright URL too long, truncated to '" << _copyrightURL << "'");
+    }
+
     void Track::clearArtistLinks()
     {
         _trackArtistLinks.clear();

src/libs/database/include/database/Artist.hpp

@@ -150,9 +150,9 @@ namespace lms::db
         // size is the max number of cluster per cluster type
         std::vector<std::vector<ObjectPtr<Cluster>>> getClusterGroups(std::vector<ClusterTypeId> clusterTypeIds, std::size_t size) const;
 
-        void setName(std::string_view name) { _name = name; }
+        void setName(std::string_view name);
         void setMBID(const std::optional<core::UUID>& mbid) { _MBID = mbid ? mbid->getAsString() : ""; }
-        void setSortName(const std::string& sortName);
+        void setSortName(std::string_view sortName);
         void setImage(ObjectPtr<Image> image);
 
         template<class Action>
@@ -168,7 +168,7 @@ namespace lms::db
         }
 
     private:
-        static constexpr std::size_t _maxNameLength{ 256 };
+        static constexpr std::size_t _maxNameLength{ 512 };
 
         friend class Session;
         // Create

src/libs/database/include/database/Cluster.hpp

@@ -43,6 +43,8 @@ namespace lms::db
     class Cluster final : public Object<Cluster, ClusterId>
     {
     public:
+        static constexpr std::size_t maxNameLength{ 512 };
+
         struct FindParameters
         {
             std::optional<Range> range;
@@ -126,8 +128,6 @@ namespace lms::db
         Cluster(ObjectPtr<ClusterType> type, std::string_view name);
         static pointer create(Session& session, ObjectPtr<ClusterType> type, std::string_view name);
 
-        static const std::size_t _maxNameLength = 128;
-
         std::string _name;
         int _trackCount{};
         int _releaseCount{};
@@ -141,6 +141,8 @@ namespace lms::db
     public:
         ClusterType() = default;
 
+        static constexpr std::size_t maxNameLength{ 512 };
+
         // Getters
         static std::size_t getCount(Session& session);
         static RangeResults<ClusterTypeId> findIds(Session& session, std::optional<Range> range = std::nullopt);
@@ -169,8 +171,6 @@ namespace lms::db
         ClusterType(std::string_view name);
         static pointer create(Session& session, std::string_view name);
 
-        static const std::size_t _maxNameLength = 128;
-
         std::string _name;
         Wt::Dbo::collection<Wt::Dbo::ptr<Cluster>> _clusters;
     };

src/libs/database/include/database/Directory.hpp

@@ -21,18 +21,24 @@
 
 #include <filesystem>
 #include <functional>
+#include <string>
+#include <string_view>
+#include <vector>
 
 #include <Wt/Dbo/Dbo.h>
 
 #include "core/EnumSet.hpp"
 #include "database/ArtistId.hpp"
 #include "database/DirectoryId.hpp"
+#include "database/MediaLibraryId.hpp"
 #include "database/Object.hpp"
+#include "database/ReleaseId.hpp"
 #include "database/Types.hpp"
 
 namespace lms::db
 {
     class Session;
+    class MediaLibrary;
 
     class Directory final : public Object<Directory, DirectoryId>
     {
@@ -42,20 +48,50 @@ namespace lms::db
         struct FindParameters
         {
             std::optional<Range> range;
-            ArtistId artist;                                         // only tracks that involve this artist
+            std::vector<std::string_view> keywords;                  // if non empty, name must match all of these keywords
+            ArtistId artist;                                         // only directory that involve this artist
+            ReleaseId release;                                       // only releases that involve this artist
             core::EnumSet<TrackArtistLinkType> trackArtistLinkTypes; // and for these link types
+            DirectoryId parentDirectory;                             // If set, directories that have this parent
+            bool withNoTrack{};                                      // If set, directories that do not contain any track
+            MediaLibraryId mediaLibrary;                             // If set, directories in this library
 
             FindParameters& setRange(std::optional<Range> _range)
             {
                 range = _range;
                 return *this;
             }
+            FindParameters& setKeywords(const std::vector<std::string_view>& _keywords)
+            {
+                keywords = _keywords;
+                return *this;
+            }
             FindParameters& setArtist(ArtistId _artist, core::EnumSet<TrackArtistLinkType> _trackArtistLinkTypes = {})
             {
                 artist = _artist;
                 trackArtistLinkTypes = _trackArtistLinkTypes;
                 return *this;
             }
+            FindParameters& setRelease(ReleaseId _release)
+            {
+                release = _release;
+                return *this;
+            }
+            FindParameters& setParentDirectory(DirectoryId _parentDirectory)
+            {
+                parentDirectory = _parentDirectory;
+                return *this;
+            }
+            FindParameters& setWithNoTrack(bool _withNoTrack)
+            {
+                withNoTrack = _withNoTrack;
+                return *this;
+            }
+            FindParameters& setMediaLibrary(MediaLibraryId _mediaLibrary)
+            {
+                mediaLibrary = _mediaLibrary;
+                return *this;
+            }
         };
 
         // find
@@ -63,17 +99,22 @@ namespace lms::db
         static pointer find(Session& session, DirectoryId id);
         static pointer find(Session& session, const std::filesystem::path& path);
         static void find(Session& session, DirectoryId& lastRetrievedDirectory, std::size_t count, const std::function<void(const Directory::pointer&)>& func);
+        static RangeResults<Directory::pointer> find(Session& session, const FindParameters& params);
         static void find(Session& session, const FindParameters& parameters, const std::function<void(const Directory::pointer&)>& func);
         static RangeResults<DirectoryId> findOrphanIds(Session& session, std::optional<Range> range = std::nullopt);
+        static RangeResults<DirectoryId> findMismatchedLibrary(Session& session, std::optional<Range> range, const std::filesystem::path& rootPath, MediaLibraryId expectedLibraryId);
+        static RangeResults<pointer> findRootDirectories(Session& session, std::optional<Range> range = std::nullopt);
 
         // getters
         const std::filesystem::path& getAbsolutePath() const { return _absolutePath; }
         std::string_view getName() const { return _name; }
-        ObjectPtr<Directory> getParent() const { return _parent; }
+        ObjectPtr<Directory> getParentDirectory() const { return _parent; }
+        ObjectPtr<MediaLibrary> getMediaLibrary() const { return _mediaLibrary; }
 
         // setters
         void setAbsolutePath(const std::filesystem::path& p);
         void setParent(ObjectPtr<Directory> parent);
+        void setMediaLibrary(ObjectPtr<MediaLibrary> mediaLibrary) { _mediaLibrary = getDboPtr(mediaLibrary); }
 
         template<class Action>
         void persist(Action& a)
@@ -82,6 +123,7 @@ namespace lms::db
             Wt::Dbo::field(a, _name, "name");
 
             Wt::Dbo::belongsTo(a, _parent, "parent_directory", Wt::Dbo::OnDeleteCascade);
+            Wt::Dbo::belongsTo(a, _mediaLibrary, "media_library", Wt::Dbo::OnDeleteSetNull); // don't delete directories on media library removal, we want to wait for the next scan to have a chance to migrate files
         }
 
     private:
@@ -93,5 +135,6 @@ namespace lms::db
         std::string _name;
 
         Wt::Dbo::ptr<Directory> _parent;
+        Wt::Dbo::ptr<MediaLibrary> _mediaLibrary;
     };
 } // namespace lms::db

src/libs/database/include/database/Release.hpp

@@ -33,6 +33,7 @@
 #include "core/UUID.hpp"
 #include "database/ArtistId.hpp"
 #include "database/ClusterId.hpp"
+#include "database/DirectoryId.hpp"
 #include "database/MediaLibraryId.hpp"
 #include "database/Object.hpp"
 #include "database/ReleaseId.hpp"
@@ -68,7 +69,7 @@ namespace lms::db
         }
 
     private:
-        static constexpr std::size_t _maxNameLength{ 128 };
+        static constexpr std::size_t _maxNameLength{ 512 };
 
         friend class Session;
         ReleaseType(std::string_view name);
@@ -96,6 +97,7 @@ namespace lms::db
             core::EnumSet<TrackArtistLinkType> excludedTrackArtistLinkTypes; //    but not for these link types
             std::string releaseType;                                         // If set, albums that has this release type
             MediaLibraryId mediaLibrary;                                     // If set, releases that has at least a track in this library
+            DirectoryId directory;                                           // if set, tracks in this directory
 
             FindParameters& setClusters(std::span<const ClusterId> _clusters)
             {
@@ -150,6 +152,11 @@ namespace lms::db
                 mediaLibrary = _mediaLibrary;
                 return *this;
             }
+            FindParameters& setDirectory(DirectoryId _directory)
+            {
+                directory = _directory;
+                return *this;
+            }
         };
 
         Release() = default;
@@ -211,6 +218,7 @@ namespace lms::db
         std::vector<ObjectPtr<Artist>> getReleaseArtists() const { return getArtists(TrackArtistLinkType::ReleaseArtist); }
         bool hasVariousArtists() const;
         std::vector<pointer> getSimilarReleases(std::optional<std::size_t> offset = {}, std::optional<std::size_t> count = {}) const;
+        bool hasDiscSubtitle() const;
 
         template<class Action>
         void persist(Action& a)
@@ -233,7 +241,7 @@ namespace lms::db
         Wt::WDate getDate(bool original) const;
         std::optional<int> getYear(bool original) const;
 
-        static constexpr std::size_t _maxNameLength{ 256 };
+        static constexpr std::size_t _maxNameLength{ 512 };
 
         std::string _name;
         std::string _sortName;

src/libs/database/include/database/Track.hpp

@@ -37,6 +37,7 @@
 #include "core/UUID.hpp"
 #include "database/ArtistId.hpp"
 #include "database/ClusterId.hpp"
+#include "database/DirectoryId.hpp"
 #include "database/MediaLibraryId.hpp"
 #include "database/Object.hpp"
 #include "database/ReleaseId.hpp"
@@ -81,6 +82,7 @@ namespace lms::db
             std::optional<int> trackNumber;                          // matching this track number
             std::optional<int> discNumber;                           // matching this disc number
             MediaLibraryId mediaLibrary;                             // If set, tracks in this library
+            DirectoryId directory;                                   // if set, tracks in this directory
 
             FindParameters& setClusters(std::span<const ClusterId> _clusters)
             {
@@ -165,6 +167,11 @@ namespace lms::db
                 mediaLibrary = _mediaLibrary;
                 return *this;
             }
+            FindParameters& setDirectory(DirectoryId _directory)
+            {
+                directory = _directory;
+                return *this;
+            }
         };
 
         struct PathResult
@@ -197,8 +204,8 @@ namespace lms::db
         void setTrackNumber(std::optional<int> num) { _trackNumber = num; }
         void setDiscNumber(std::optional<int> num) { _discNumber = num; }
         void setTotalTrack(std::optional<int> totalTrack) { _totalTrack = totalTrack; }
-        void setDiscSubtitle(const std::string& name) { _discSubtitle = name; }
-        void setName(const std::string& name) { _name = std::string(name, 0, _maxNameLength); }
+        void setDiscSubtitle(std::string_view name) { _discSubtitle = name; }
+        void setName(std::string_view name);
         void setAbsoluteFilePath(const std::filesystem::path& filePath);
         void setRelativeFilePath(const std::filesystem::path& filePath);
         void setFileSize(std::size_t fileSize) { _fileSize = fileSize; }
@@ -216,8 +223,8 @@ namespace lms::db
         void setHasCover(bool hasCover) { _hasCover = hasCover; }
         void setTrackMBID(const std::optional<core::UUID>& MBID) { _trackMBID = MBID ? MBID->getAsString() : ""; }
         void setRecordingMBID(const std::optional<core::UUID>& MBID) { _recordingMBID = MBID ? MBID->getAsString() : ""; }
-        void setCopyright(const std::string& copyright) { _copyright = std::string(copyright, 0, _maxCopyrightLength); }
-        void setCopyrightURL(const std::string& copyrightURL) { _copyrightURL = std::string(copyrightURL, 0, _maxCopyrightURLLength); }
+        void setCopyright(std::string_view copyright);
+        void setCopyrightURL(std::string_view copyrightURL);
         void setTrackReplayGain(std::optional<float> replayGain) { _trackReplayGain = replayGain; }
         void setReleaseReplayGain(std::optional<float> replayGain) { _releaseReplayGain = replayGain; } // may be by disc!
         void setArtistDisplayName(std::string_view name) { _artistDisplayName = name; }
@@ -311,9 +318,9 @@ namespace lms::db
         friend class Session;
         static pointer create(Session& session);
 
-        static constexpr std::size_t _maxNameLength{ 256 };
-        static constexpr std::size_t _maxCopyrightLength{ 256 };
-        static constexpr std::size_t _maxCopyrightURLLength{ 256 };
+        static constexpr std::size_t _maxNameLength{ 512 };
+        static constexpr std::size_t _maxCopyrightLength{ 512 };
+        static constexpr std::size_t _maxCopyrightURLLength{ 512 };
 
         int _scanVersion{};
         std::optional<int> _trackNumber{};

src/libs/database/include/database/Types.hpp

@@ -25,8 +25,16 @@
 
 #include <Wt/WDate.h>
 
+#include "core/Exception.hpp"
+
 namespace lms::db
 {
+    class Exception : public core::LmsException
+    {
+    public:
+        using LmsException::LmsException;
+    };
+
     // Caution: do not change enum values if they are set!
 
     // Request:

src/libs/database/include/database/User.hpp

@@ -68,8 +68,8 @@ namespace lms::db
             }
         };
 
-        static inline constexpr std::size_t MinNameLength{ 3 };
-        static inline constexpr std::size_t MaxNameLength{ 15 };
+        static inline constexpr std::size_t minNameLength{ 3 };
+        static inline constexpr std::size_t maxNameLength{ 32 };
         static inline constexpr bool defaultSubsonicEnableTranscodingByDefault{ false };
         static inline constexpr TranscodingOutputFormat defaultSubsonicTranscodingOutputFormat{ TranscodingOutputFormat::OGG_OPUS };
         static inline constexpr Bitrate defaultSubsonicTranscodingOutputBitrate{ 128000 };

src/libs/database/test/Cluster.cpp

@@ -35,7 +35,7 @@ namespace lms::db::tests
         ScopedClusterType clusterType{ session, "MyType" };
 
         {
-            auto transaction{ session.createWriteTransaction() };
+            auto transaction{ session.createReadTransaction() };
             EXPECT_EQ(ClusterType::getCount(session), 1);
         }
 
@@ -43,7 +43,7 @@ namespace lms::db::tests
             ScopedCluster cluster{ session, clusterType.lockAndGet(), "MyCluster" };
 
             {
-                auto transaction{ session.createWriteTransaction() };
+                auto transaction{ session.createReadTransaction() };
 
                 EXPECT_EQ(Cluster::getCount(session), 1);
                 EXPECT_EQ(cluster->getType()->getId(), clusterType.getId());
@@ -74,7 +74,7 @@ namespace lms::db::tests
         }
 
         {
-            auto transaction{ session.createWriteTransaction() };
+            auto transaction{ session.createReadTransaction() };
 
             auto clusterTypes{ ClusterType::findOrphanIds(session) };
             ASSERT_EQ(clusterTypes.results.size(), 1);
@@ -84,6 +84,70 @@ namespace lms::db::tests
         }
     }
 
+    TEST_F(DatabaseFixture, Cluster_find)
+    {
+        ScopedClusterType clusterType{ session, "MyType" };
+        ScopedCluster cluster1{ session, clusterType.lockAndGet(), "MyCluster" };
+        ScopedCluster cluster2{ session, clusterType.lockAndGet(), "Mycluster" };
+        ScopedCluster cluster3{ session, clusterType.lockAndGet(), "MyOtherCluster" };
+
+        {
+            auto transaction{ session.createReadTransaction() };
+
+            EXPECT_EQ(clusterType->getCluster("MyCluster"), cluster1.get());
+            EXPECT_EQ(clusterType->getCluster("Mycluster"), cluster2.get());
+
+            EXPECT_EQ(clusterType->getCluster(" Mycluster"), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster("Mycluster "), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster("mycluster"), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster("My"), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster("Cluster"), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster("MyCluster1"), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster("MyCluster2"), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster(""), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster(" "), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster("*"), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster(R"(%)"), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster(R"(%%)"), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster(R"(")"), Cluster::pointer{});
+            EXPECT_EQ(clusterType->getCluster(R"("")"), Cluster::pointer{});
+        }
+    }
+
+    TEST_F(DatabaseFixture, Cluster_create)
+    {
+        ScopedClusterType clusterType{ session, "MyType" };
+
+        {
+            auto transaction{ session.createWriteTransaction() };
+
+            auto createdCluster{ session.create<Cluster>(clusterType.get(), "Foo") };
+            auto foundCluster{ clusterType->getCluster("Foo") };
+            EXPECT_EQ(createdCluster, foundCluster);
+        }
+
+        {
+            auto transaction{ session.createWriteTransaction() };
+
+            auto createdCluster{ session.create<Cluster>(clusterType.get(), "") };
+            auto foundCluster{ clusterType->getCluster("") };
+            EXPECT_EQ(createdCluster, foundCluster);
+        }
+    }
+
+    TEST_F(DatabaseFixture, Cluster_create_long)
+    {
+        ScopedClusterType clusterType{ session, "MyType" };
+
+        {
+            auto transaction{ session.createWriteTransaction() };
+
+            auto createdCluster{ session.create<Cluster>(clusterType.get(), "Alternative Rock; Art Pop; Art Rock; Britpop; Chamber Pop; Electronic Rock; Electronica; Experimental Rock; Neo-Progressive Rock; Foo") };
+            auto foundCluster{ clusterType->getCluster("Alternative Rock; Art Pop; Art Rock; Britpop; Chamber Pop; Electronic Rock; Electronica; Experimental Rock; Neo-Progressive Rock; Foo") };
+            EXPECT_EQ(createdCluster, foundCluster);
+        }
+    }
+
     TEST_F(DatabaseFixture, Cluster_singleTrack)
     {
         ScopedTrack track{ session };

src/libs/database/test/Directory.cpp

@@ -107,23 +107,35 @@ namespace lms::db::tests
         {
             auto transaction{ session.createReadTransaction() };
 
-            auto dir{ child->getParent() };
+            auto dir{ child->getParentDirectory() };
             EXPECT_EQ(dir, Directory::pointer{});
         }
 
         {
             auto transaction{ session.createWriteTransaction() };
 
-            child.get().modify()->setParent(parent.lockAndGet());
+            child.get().modify()->setParent(parent.get());
         }
 
         {
             auto transaction{ session.createReadTransaction() };
 
-            auto dir{ child->getParent() };
+            auto dir{ child->getParentDirectory() };
             ASSERT_NE(dir, Directory::pointer{});
             EXPECT_EQ(dir->getId(), parent.getId());
         }
+
+        {
+            auto transaction{ session.createReadTransaction() };
+
+            Directory::pointer foundDir;
+            Directory::find(session, Directory::FindParameters{}.setParentDirectory(parent->getId()), [&](const Directory::pointer& dir) {
+                ASSERT_EQ(foundDir, Directory::pointer{});
+                foundDir = dir;
+            });
+            ASSERT_NE(foundDir, Directory::pointer{});
+            EXPECT_EQ(foundDir->getId(), child.getId());
+        }
     }
 
     TEST_F(DatabaseFixture, Directory_orphaned)
@@ -141,7 +153,7 @@ namespace lms::db::tests
         {
             auto transaction{ session.createWriteTransaction() };
 
-            child.get().modify()->setParent(parent.lockAndGet());
+            child.get().modify()->setParent(parent.get());
         }
 
         {
@@ -152,4 +164,125 @@ namespace lms::db::tests
             EXPECT_EQ(directories.front(), child.getId());
         }
     }
+
+    TEST_F(DatabaseFixture, Directory_findRootDirectories)
+    {
+        ScopedDirectory parent1{ session, "/root1" };
+        ScopedDirectory child{ session, "/root1/child" };
+        ScopedDirectory parent2{ session, "/root2" };
+
+        {
+            auto transaction{ session.createWriteTransaction() };
+
+            child.get().modify()->setParent(parent1.get());
+        }
+
+        {
+            auto transaction{ session.createReadTransaction() };
+
+            const auto directories{ Directory::findRootDirectories(session).results };
+            ASSERT_EQ(directories.size(), 2);
+            EXPECT_EQ(directories[0]->getId(), parent1.getId());
+            EXPECT_EQ(directories[1]->getId(), parent2.getId());
+        }
+    }
+
+    TEST_F(DatabaseFixture, Directory_findNonTrackDirectories)
+    {
+        ScopedDirectory parent{ session, "/root" };
+        ScopedDirectory child1{ session, "/root/child1" };
+        ScopedDirectory child2{ session, "/root/child2" };
+        ScopedTrack track{ session };
+
+        {
+            auto transaction{ session.createWriteTransaction() };
+
+            child1.get().modify()->setParent(parent.get());
+            child2.get().modify()->setParent(parent.get());
+        }
+
+        {
+            auto transaction{ session.createReadTransaction() };
+
+            Directory::FindParameters params;
+            params.setWithNoTrack(true);
+
+            auto res{ Directory::find(session, params).results };
+
+            ASSERT_EQ(res.size(), 3);
+            EXPECT_EQ(res[0]->getId(), parent.getId());
+            EXPECT_EQ(res[1]->getId(), child1.getId());
+            EXPECT_EQ(res[2]->getId(), child2.getId());
+        }
+
+        {
+            auto transaction{ session.createWriteTransaction() };
+            track.get().modify()->setDirectory(child2.get());
+        }
+
+        {
+            auto transaction{ session.createReadTransaction() };
+
+            Directory::FindParameters params;
+            params.setWithNoTrack(true);
+
+            auto res{ Directory::find(session, params).results };
+            ASSERT_EQ(res.size(), 2);
+            EXPECT_EQ(res[0]->getId(), parent.getId());
+            EXPECT_EQ(res[1]->getId(), child1.getId());
+        }
+    }
+
+    TEST_F(DatabaseFixture, Directory_findWithKeywords)
+    {
+        ScopedDirectory parent{ session, "/root" };
+        ScopedDirectory child1{ session, "/root/foo" };
+        ScopedDirectory child2{ session, "/root/bar/foo" };
+
+        {
+            auto transaction{ session.createReadTransaction() };
+
+            Directory::FindParameters params;
+            params.setKeywords({ "foo" });
+
+            auto res{ Directory::find(session, params).results };
+
+            ASSERT_EQ(res.size(), 2);
+            EXPECT_EQ(res[0]->getId(), child1.getId());
+            EXPECT_EQ(res[1]->getId(), child2.getId());
+        }
+    }
+
+    TEST_F(DatabaseFixture, Directory_findMismatchedLibrary)
+    {
+        ScopedDirectory parent1{ session, "/root" };
+        ScopedDirectory child1{ session, "/root/foo" };
+        ScopedDirectory parent2{ session, "/root_1" };
+        ScopedDirectory child2{ session, "/root_1/foo" };
+
+        ScopedMediaLibrary library{ session, "/root" };
+
+        {
+            auto transaction{ session.createReadTransaction() };
+
+            const auto res{ Directory::findMismatchedLibrary(session, std::nullopt, library->getPath(), library->getId()).results };
+            ASSERT_EQ(res.size(), 2);
+            EXPECT_EQ(res[0], parent1.getId());
+            EXPECT_EQ(res[1], child1.getId());
+        }
+
+        {
+            auto transaction{ session.createWriteTransaction() };
+
+            parent1.get().modify()->setMediaLibrary(library.get());
+            child1.get().modify()->setMediaLibrary(library.get());
+        }
+
+        {
+            auto transaction{ session.createReadTransaction() };
+
+            const auto res{ Directory::findMismatchedLibrary(session, std::nullopt, library->getPath(), library->getId()).results };
+            EXPECT_EQ(res.size(), 0);
+        }
+    }
 } // namespace lms::db::tests

src/libs/services/scanner/CMakeLists.txt

@@ -12,6 +12,7 @@ add_library(lmsscanner SHARED
 	impl/ScanStepOptimize.cpp
 	impl/ScanStepRemoveOrphanedDbEntries.cpp
 	impl/ScanStepScanFiles.cpp
+	impl/ScanStepUpdateLibraryFields.cpp
 	)
 
 target_include_directories(lmsscanner INTERFACE

src/libs/services/scanner/impl/ScanStepAssociateArtistImages.cpp

@@ -205,6 +205,9 @@ namespace lms::scanner
 
     void ScanStepAssociateArtistImages::process(ScanContext& context)
     {
+        if (_abortScan)
+            return;
+
         if (context.stats.nbChanges() == 0)
             return;
 
@@ -224,6 +227,9 @@ namespace lms::scanner
         ArtistImageAssociationContainer artistImageAssociations;
         while (fetchNextArtistImagesToUpdate(searchContext, artistImageAssociations))
         {
+            if (_abortScan)
+                return;
+
             updateArtistImages(session, artistImageAssociations);
             context.currentStepStats.processedElems += readBatchSize;
             _progressCallback(context.currentStepStats);

src/libs/services/scanner/impl/ScanStepScanFiles.cpp

@@ -104,18 +104,20 @@ namespace lms::scanner
             return res;
         }
 
-        Directory::pointer getOrCreateDirectory(Session& session, const std::filesystem::path& path, const std::filesystem::path& rootPath)
+        Directory::pointer getOrCreateDirectory(Session& session, const std::filesystem::path& path, const MediaLibrary::pointer& mediaLibrary)
         {
             Directory::pointer directory{ Directory::find(session, path) };
             if (!directory)
             {
                 Directory::pointer parentDirectory;
-                if (path != rootPath)
-                    parentDirectory = getOrCreateDirectory(session, path.parent_path(), rootPath);
+                if (path != mediaLibrary->getPath())
+                    parentDirectory = getOrCreateDirectory(session, path.parent_path(), mediaLibrary);
 
                 directory = session.create<Directory>(path);
                 directory.modify()->setParent(parentDirectory);
+                directory.modify()->setMediaLibrary(mediaLibrary);
             }
+            // Don't update library if it does not match, will be updated elsewhere
 
             return directory;
         }
@@ -350,12 +352,13 @@ namespace lms::scanner
 
         std::vector<FileScanResult> scanResults;
 
+        std::filesystem::path currentDirectory;
         core::pathUtils::exploreFilesRecursive(
             mediaLibrary.rootDirectory, [&](std::error_code ec, const std::filesystem::path& path) {
                 LMS_SCOPED_TRACE_DETAILED("Scanner", "OnExploreFile");
 
                 if (_abortScan)
-                    return false;
+                    return false; // stop iterating
 
                 if (ec)
                 {
@@ -364,21 +367,21 @@ namespace lms::scanner
                 }
                 else
                 {
-                    bool fileToProcess{};
+                    bool fileMatched{};
                     if (core::pathUtils::hasFileAnyExtension(path, _settings.supportedAudioFileExtensions))
                     {
-                        fileToProcess = true;
+                        fileMatched = true;
                         if (checkAudioFileNeedScan(context, path, mediaLibrary))
                             _fileScanQueue.pushScanRequest(path, FileScanQueue::ScanRequestType::AudioFile);
                     }
                     else if (core::pathUtils::hasFileAnyExtension(path, _settings.supportedImageFileExtensions))
                     {
-                        fileToProcess = true;
+                        fileMatched = true;
                         if (checkImageFileNeedScan(context, path))
                             _fileScanQueue.pushScanRequest(path, FileScanQueue::ScanRequestType::ImageFile);
                     }
 
-                    if (fileToProcess)
+                    if (fileMatched)
                     {
                         context.currentStepStats.processedElems++;
                         _progressCallback(context.currentStepStats);
@@ -415,17 +418,19 @@ namespace lms::scanner
             return false;
         }
 
+        if (context.scanOptions.fullScan)
+            return true;
+
         bool needUpdateLibrary{};
-        if (!context.scanOptions.fullScan)
+        db::Session& dbSession{ _db.getTLSSession() };
+
         {
+            auto transaction{ dbSession.createReadTransaction() };
+
             // Skip file if last write is the same
-            db::Session& dbSession{ _db.getTLSSession() };
-            auto transaction{ _db.getTLSSession().createReadTransaction() };
-
             const Track::pointer track{ Track::findByPath(dbSession, file) };
-
             if (track
-                && track->getLastWriteTime().toTime_t() == lastWriteTime.toTime_t()
+                && track->getLastWriteTime() == lastWriteTime
                 && track->getScanVersion() == _settings.scanVersion)
             {
                 // this file may have been moved from one library to another, then we just need to update the media library id instead of a full rescan
@@ -442,8 +447,7 @@ namespace lms::scanner
 
         if (needUpdateLibrary)
         {
-            db::Session& dbSession{ _db.getTLSSession() };
-            auto transaction{ _db.getTLSSession().createWriteTransaction() };
+            auto transaction{ dbSession.createWriteTransaction() };
 
             Track::pointer track{ Track::findByPath(dbSession, file) };
             assert(track);
@@ -497,32 +501,18 @@ namespace lms::scanner
 
             if (const AudioFileScanData * scanData{ std::get_if<AudioFileScanData>(&scanResult.scanData) })
             {
-                if (metadata::Track * track{ scanData->get() })
-                {
-                    context.stats.scans++;
-                    processAudioFileScanData(context, scanResult.path, *track, libraryInfo);
-                }
-                else
-                {
-                    context.stats.errors.emplace_back(scanResult.path, ScanErrorType::CannotReadAudioFile);
-                }
+                context.stats.scans++;
+                processAudioFileScanData(context, scanResult.path, scanData->get(), libraryInfo);
             }
             else if (const ImageFileScanData * scanData{ std::get_if<ImageFileScanData>(&scanResult.scanData) })
             {
-                if (scanData->has_value())
-                {
-                    context.stats.scans++;
-                    processImageFileScanData(context, scanResult.path, scanData->value(), libraryInfo);
-                }
-                else
-                {
-                    context.stats.errors.emplace_back(scanResult.path, ScanErrorType::CannotReadImageFile);
-                }
+                context.stats.scans++;
+                processImageFileScanData(context, scanResult.path, scanData->has_value() ? &scanData->value() : nullptr, libraryInfo);
             }
         }
     }
 
-    void ScanStepScanFiles::processAudioFileScanData(ScanContext& context, const std::filesystem::path& file, const metadata::Track& trackMetadata, const ScannerSettings::MediaLibraryInfo& libraryInfo)
+    void ScanStepScanFiles::processAudioFileScanData(ScanContext& context, const std::filesystem::path& file, const metadata::Track* trackMetadata, const ScannerSettings::MediaLibraryInfo& libraryInfo)
     {
         LMS_SCOPED_TRACE_DETAILED("Scanner", "ProcessAudioScanData");
 
@@ -538,9 +528,20 @@ namespace lms::scanner
         db::Session& dbSession{ _db.getTLSSession() };
         Track::pointer track{ Track::findByPath(dbSession, file) };
 
-        if (trackMetadata.mbid && (!track || _settings.skipDuplicateMBID))
+        if (!trackMetadata)
         {
-            std::vector<Track::pointer> duplicateTracks{ Track::findByMBID(dbSession, *trackMetadata.mbid) };
+            if (track)
+            {
+                track.remove();
+                stats.deletions++;
+            }
+            context.stats.errors.emplace_back(file, ScanErrorType::CannotReadAudioFile);
+            return;
+        }
+
+        if (trackMetadata->mbid && (!track || _settings.skipDuplicateMBID))
+        {
+            std::vector<Track::pointer> duplicateTracks{ Track::findByMBID(dbSession, *trackMetadata->mbid) };
 
             // find for an existing track MBID as the file may have just been moved
             if (!track && duplicateTracks.size() == 1)
@@ -586,7 +587,7 @@ namespace lms::scanner
         }
 
         // We estimate this is an audio file if the duration is not null
-        if (trackMetadata.audioProperties.duration == std::chrono::milliseconds::zero())
+        if (trackMetadata->audioProperties.duration == std::chrono::milliseconds::zero())
         {
             LMS_LOG(DBUPDATER, DEBUG, "Skipped '" << file.string() << "' (duration is 0)");
 
@@ -596,14 +597,14 @@ namespace lms::scanner
                 track.remove();
                 stats.deletions++;
             }
-            stats.errors.emplace_back(ScanError{ file, ScanErrorType::BadDuration });
+            stats.errors.emplace_back(file, ScanErrorType::BadDuration);
             return;
         }
 
         // ***** Title
         std::string title;
-        if (!trackMetadata.title.empty())
-            title = trackMetadata.title;
+        if (!trackMetadata->title.empty())
+            title = trackMetadata->title;
         else
         {
             // TODO parse file name guess track etc.
@@ -625,91 +626,92 @@ namespace lms::scanner
         assert(track);
 
         // Audio properties
-        track.modify()->setBitrate(trackMetadata.audioProperties.bitrate);
-        track.modify()->setBitsPerSample(trackMetadata.audioProperties.bitsPerSample);
-        track.modify()->setChannelCount(trackMetadata.audioProperties.channelCount);
-        track.modify()->setDuration(trackMetadata.audioProperties.duration);
-        track.modify()->setSampleRate(trackMetadata.audioProperties.sampleRate);
+        track.modify()->setBitrate(trackMetadata->audioProperties.bitrate);
+        track.modify()->setBitsPerSample(trackMetadata->audioProperties.bitsPerSample);
+        track.modify()->setChannelCount(trackMetadata->audioProperties.channelCount);
+        track.modify()->setDuration(trackMetadata->audioProperties.duration);
+        track.modify()->setSampleRate(trackMetadata->audioProperties.sampleRate);
 
         track.modify()->setRelativeFilePath(fileInfo->relativePath);
         track.modify()->setFileSize(fileInfo->fileSize);
         track.modify()->setLastWriteTime(fileInfo->lastWriteTime);
 
-        track.modify()->setMediaLibrary(MediaLibrary::find(dbSession, libraryInfo.id)); // may be null if settings are updated in // => next scan will correct this
-        track.modify()->setDirectory(getOrCreateDirectory(dbSession, file.parent_path(), libraryInfo.rootDirectory));
+        MediaLibrary::pointer mediaLibrary{ MediaLibrary::find(dbSession, libraryInfo.id) }; // may be null if settings are updated in // => next scan will correct this
+        track.modify()->setMediaLibrary(mediaLibrary);
+        track.modify()->setDirectory(getOrCreateDirectory(dbSession, file.parent_path(), mediaLibrary));
 
         track.modify()->clearArtistLinks();
         // Do not fallback on artists with the same name but having a MBID for artist and releaseArtists, as it may be corrected by properly tagging files
-        for (const Artist::pointer& artist : getOrCreateArtists(dbSession, trackMetadata.artists, false))
+        for (const Artist::pointer& artist : getOrCreateArtists(dbSession, trackMetadata->artists, false))
             track.modify()->addArtistLink(TrackArtistLink::create(dbSession, track, artist, TrackArtistLinkType::Artist));
 
-        if (trackMetadata.medium && trackMetadata.medium->release)
+        if (trackMetadata->medium && trackMetadata->medium->release)
         {
-            for (const Artist::pointer& releaseArtist : getOrCreateArtists(dbSession, trackMetadata.medium->release->artists, false))
+            for (const Artist::pointer& releaseArtist : getOrCreateArtists(dbSession, trackMetadata->medium->release->artists, false))
                 track.modify()->addArtistLink(TrackArtistLink::create(dbSession, track, releaseArtist, TrackArtistLinkType::ReleaseArtist));
         }
 
         // Allow fallbacks on artists with the same name even if they have MBID, since there is no tag to indicate the MBID of these artists
         // We could ask MusicBrainz to get all the information, but that would heavily slow down the import process
-        for (const Artist::pointer& conductor : getOrCreateArtists(dbSession, trackMetadata.conductorArtists, true))
+        for (const Artist::pointer& conductor : getOrCreateArtists(dbSession, trackMetadata->conductorArtists, true))
             track.modify()->addArtistLink(TrackArtistLink::create(dbSession, track, conductor, TrackArtistLinkType::Conductor));
 
-        for (const Artist::pointer& composer : getOrCreateArtists(dbSession, trackMetadata.composerArtists, true))
+        for (const Artist::pointer& composer : getOrCreateArtists(dbSession, trackMetadata->composerArtists, true))
             track.modify()->addArtistLink(TrackArtistLink::create(dbSession, track, composer, TrackArtistLinkType::Composer));
 
-        for (const Artist::pointer& lyricist : getOrCreateArtists(dbSession, trackMetadata.lyricistArtists, true))
+        for (const Artist::pointer& lyricist : getOrCreateArtists(dbSession, trackMetadata->lyricistArtists, true))
             track.modify()->addArtistLink(TrackArtistLink::create(dbSession, track, lyricist, TrackArtistLinkType::Lyricist));
 
-        for (const Artist::pointer& mixer : getOrCreateArtists(dbSession, trackMetadata.mixerArtists, true))
+        for (const Artist::pointer& mixer : getOrCreateArtists(dbSession, trackMetadata->mixerArtists, true))
             track.modify()->addArtistLink(TrackArtistLink::create(dbSession, track, mixer, TrackArtistLinkType::Mixer));
 
-        for (const auto& [role, performers] : trackMetadata.performerArtists)
+        for (const auto& [role, performers] : trackMetadata->performerArtists)
         {
             for (const Artist::pointer& performer : getOrCreateArtists(dbSession, performers, true))
                 track.modify()->addArtistLink(TrackArtistLink::create(dbSession, track, performer, TrackArtistLinkType::Performer, role));
         }
 
-        for (const Artist::pointer& producer : getOrCreateArtists(dbSession, trackMetadata.producerArtists, true))
+        for (const Artist::pointer& producer : getOrCreateArtists(dbSession, trackMetadata->producerArtists, true))
             track.modify()->addArtistLink(TrackArtistLink::create(dbSession, track, producer, TrackArtistLinkType::Producer));
 
-        for (const Artist::pointer& remixer : getOrCreateArtists(dbSession, trackMetadata.remixerArtists, true))
+        for (const Artist::pointer& remixer : getOrCreateArtists(dbSession, trackMetadata->remixerArtists, true))
             track.modify()->addArtistLink(TrackArtistLink::create(dbSession, track, remixer, TrackArtistLinkType::Remixer));
 
         track.modify()->setScanVersion(_settings.scanVersion);
-        if (trackMetadata.medium && trackMetadata.medium->release)
-            track.modify()->setRelease(getOrCreateRelease(dbSession, *trackMetadata.medium->release, file.parent_path()));
+        if (trackMetadata->medium && trackMetadata->medium->release)
+            track.modify()->setRelease(getOrCreateRelease(dbSession, *trackMetadata->medium->release, file.parent_path()));
         else
             track.modify()->setRelease({});
-        track.modify()->setTotalTrack(trackMetadata.medium ? trackMetadata.medium->trackCount : std::nullopt);
-        track.modify()->setReleaseReplayGain(trackMetadata.medium ? trackMetadata.medium->replayGain : std::nullopt);
-        track.modify()->setDiscSubtitle(trackMetadata.medium ? trackMetadata.medium->name : "");
-        track.modify()->setClusters(getOrCreateClusters(dbSession, trackMetadata));
+        track.modify()->setTotalTrack(trackMetadata->medium ? trackMetadata->medium->trackCount : std::nullopt);
+        track.modify()->setReleaseReplayGain(trackMetadata->medium ? trackMetadata->medium->replayGain : std::nullopt);
+        track.modify()->setDiscSubtitle(trackMetadata->medium ? trackMetadata->medium->name : "");
+        track.modify()->setClusters(getOrCreateClusters(dbSession, *trackMetadata));
         track.modify()->setName(title);
         track.modify()->setAddedTime(Wt::WDateTime::currentDateTime());
-        track.modify()->setTrackNumber(trackMetadata.position);
-        track.modify()->setDiscNumber(trackMetadata.medium ? trackMetadata.medium->position : std::nullopt);
-        track.modify()->setDate(trackMetadata.date);
-        track.modify()->setYear(trackMetadata.year);
-        track.modify()->setOriginalDate(trackMetadata.originalDate);
-        track.modify()->setOriginalYear(trackMetadata.originalYear);
+        track.modify()->setTrackNumber(trackMetadata->position);
+        track.modify()->setDiscNumber(trackMetadata->medium ? trackMetadata->medium->position : std::nullopt);
+        track.modify()->setDate(trackMetadata->date);
+        track.modify()->setYear(trackMetadata->year);
+        track.modify()->setOriginalDate(trackMetadata->originalDate);
+        track.modify()->setOriginalYear(trackMetadata->originalYear);
 
         // If a file has an OriginalDate but no date, set it to ease filtering
-        if (!trackMetadata.date.isValid() && trackMetadata.originalDate.isValid())
-            track.modify()->setDate(trackMetadata.originalDate);
+        if (!trackMetadata->date.isValid() && trackMetadata->originalDate.isValid())
+            track.modify()->setDate(trackMetadata->originalDate);
 
         // If a file has an OriginalYear but no Year, set it to ease filtering
-        if (!trackMetadata.year && trackMetadata.originalYear)
-            track.modify()->setYear(trackMetadata.originalYear);
+        if (!trackMetadata->year && trackMetadata->originalYear)
+            track.modify()->setYear(trackMetadata->originalYear);
 
-        track.modify()->setRecordingMBID(trackMetadata.recordingMBID);
-        track.modify()->setTrackMBID(trackMetadata.mbid);
+        track.modify()->setRecordingMBID(trackMetadata->recordingMBID);
+        track.modify()->setTrackMBID(trackMetadata->mbid);
         if (auto trackFeatures{ TrackFeatures::find(dbSession, track->getId()) })
             trackFeatures.remove(); // TODO: only if MBID changed?
-        track.modify()->setHasCover(trackMetadata.hasCover);
-        track.modify()->setCopyright(trackMetadata.copyright);
-        track.modify()->setCopyrightURL(trackMetadata.copyrightURL);
-        track.modify()->setTrackReplayGain(trackMetadata.replayGain);
-        track.modify()->setArtistDisplayName(trackMetadata.artistDisplayName);
+        track.modify()->setHasCover(trackMetadata->hasCover);
+        track.modify()->setCopyright(trackMetadata->copyright);
+        track.modify()->setCopyrightURL(trackMetadata->copyrightURL);
+        track.modify()->setTrackReplayGain(trackMetadata->replayGain);
+        track.modify()->setArtistDisplayName(trackMetadata->artistDisplayName);
 
         if (added)
         {
@@ -723,7 +725,7 @@ namespace lms::scanner
         }
     }
 
-    void ScanStepScanFiles::processImageFileScanData(ScanContext& context, const std::filesystem::path& file, const ImageInfo& imageInfo, const ScannerSettings::MediaLibraryInfo& libraryInfo)
+    void ScanStepScanFiles::processImageFileScanData(ScanContext& context, const std::filesystem::path& file, const ImageInfo* imageInfo, const ScannerSettings::MediaLibraryInfo& libraryInfo)
     {
         LMS_SCOPED_TRACE_DETAILED("Scanner", "ProcessImageScanData");
 
@@ -739,6 +741,17 @@ namespace lms::scanner
         db::Session& dbSession{ _db.getTLSSession() };
         db::Image::pointer image{ db::Image::find(dbSession, file) };
 
+        if (!imageInfo)
+        {
+            if (image)
+            {
+                image.remove();
+                stats.deletions++;
+            }
+            context.stats.errors.emplace_back(file, ScanErrorType::CannotReadImageFile);
+            return;
+        }
+
         bool added;
         if (!image)
         {
@@ -752,9 +765,10 @@ namespace lms::scanner
 
         image.modify()->setLastWriteTime(fileInfo->lastWriteTime);
         image.modify()->setFileSize(fileInfo->fileSize);
-        image.modify()->setHeight(imageInfo.height);
-        image.modify()->setWidth(imageInfo.width);
-        image.modify()->setDirectory(getOrCreateDirectory(dbSession, file.parent_path(), libraryInfo.rootDirectory));
+        image.modify()->setHeight(imageInfo->height);
+        image.modify()->setWidth(imageInfo->width);
+        MediaLibrary::pointer mediaLibrary{ MediaLibrary::find(dbSession, libraryInfo.id) }; // may be null if settings are updated in // => next scan will correct this
+        image.modify()->setDirectory(getOrCreateDirectory(dbSession, file.parent_path(), mediaLibrary));
 
         if (added)
         {

src/libs/services/scanner/impl/ScanStepScanFiles.hpp

@@ -46,8 +46,8 @@ namespace lms::scanner
         bool checkImageFileNeedScan(ScanContext& context, const std::filesystem::path& file);
 
         void processFileScanResults(ScanContext& context, std::span<const FileScanResult> scanResults, const ScannerSettings::MediaLibraryInfo& libraryInfo);
-        void processAudioFileScanData(ScanContext& context, const std::filesystem::path& path, const metadata::Track& trackMetadata, const ScannerSettings::MediaLibraryInfo& libraryInfo);
-        void processImageFileScanData(ScanContext& context, const std::filesystem::path& path, const ImageInfo& imageInfo, const ScannerSettings::MediaLibraryInfo& libraryInfo);
+        void processAudioFileScanData(ScanContext& context, const std::filesystem::path& path, const metadata::Track* trackMetadata, const ScannerSettings::MediaLibraryInfo& libraryInfo);
+        void processImageFileScanData(ScanContext& context, const std::filesystem::path& path, const ImageInfo* imageInfo, const ScannerSettings::MediaLibraryInfo& libraryInfo);
 
         std::unique_ptr<metadata::IParser> _metadataParser;
         const std::vector<std::string> _extraTagsToParse;

src/libs/services/scanner/impl/ScanStepUpdateLibraryFields.cpp

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2023 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LMS is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "ScanStepUpdateLibraryFields.hpp"
+
+#include "core/ILogger.hpp"
+#include "core/Path.hpp"
+#include "database/Db.hpp"
+#include "database/Directory.hpp"
+#include "database/MediaLibrary.hpp"
+#include "database/Session.hpp"
+
+namespace lms::scanner
+{
+
+    void ScanStepUpdateLibraryFields::process(ScanContext& context)
+    {
+        processDirectories(context);
+    }
+
+    void ScanStepUpdateLibraryFields::processDirectories(ScanContext& context)
+    {
+        for (const ScannerSettings::MediaLibraryInfo& mediaLibrary : _settings.mediaLibraries)
+        {
+            if (_abortScan)
+                break;
+
+            processDirectory(context, mediaLibrary);
+        }
+    }
+
+    void ScanStepUpdateLibraryFields::processDirectory(ScanContext& context, const ScannerSettings::MediaLibraryInfo& mediaLibrary)
+    {
+        db::Session& session{ _db.getTLSSession() };
+
+        constexpr std::size_t batchSize = 100;
+
+        db::RangeResults<db::DirectoryId> entries;
+        while (!_abortScan)
+        {
+            {
+                auto transaction{ session.createReadTransaction() };
+
+                entries = db::Directory::findMismatchedLibrary(session, db::Range{ 0, batchSize }, mediaLibrary.rootDirectory, mediaLibrary.id);
+            };
+
+            if (entries.results.empty())
+                break;
+
+            {
+                auto transaction{ session.createWriteTransaction() };
+
+                db::MediaLibrary::pointer library{ db::MediaLibrary::find(session, mediaLibrary.id) };
+                if (!library) // may be legit
+                    break;
+
+                for (const db::DirectoryId directoryId : entries.results)
+                {
+                    if (_abortScan)
+                        break;
+
+                    db::Directory::pointer directory{ db::Directory::find(session, directoryId) };
+                    directory.modify()->setMediaLibrary(library);
+                }
+            }
+
+            context.currentStepStats.processedElems += entries.results.size();
+            _progressCallback(context.currentStepStats);
+        }
+    }
+} // namespace lms::scanner

src/libs/services/scanner/impl/ScanStepUpdateLibraryFields.hpp

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2023 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LMS is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "database/DirectoryId.hpp"
+
+#include "ScanStepBase.hpp"
+
+namespace lms::scanner
+{
+    class ScanStepUpdateLibraryFields : public ScanStepBase
+    {
+    public:
+        using ScanStepBase::ScanStepBase;
+
+    private:
+        core::LiteralString getStepName() const override { return "Update Library fields"; }
+        ScanStep getStep() const override { return ScanStep::UpdateLibraryFields; }
+        void process(ScanContext& context) override;
+
+        void processDirectories(ScanContext& context);
+        void processDirectory(ScanContext& context, const ScannerSettings::MediaLibraryInfo& mediaLibrary);
+    };
+} // namespace lms::scanner

src/libs/services/scanner/impl/ScannerService.cpp

@@ -40,6 +40,7 @@
 #include "ScanStepOptimize.hpp"
 #include "ScanStepRemoveOrphanedDbEntries.hpp"
 #include "ScanStepScanFiles.hpp"
+#include "ScanStepUpdateLibraryFields.hpp"
 
 namespace lms::scanner
 {
@@ -279,7 +280,7 @@ namespace lms::scanner
             LMS_SCOPED_TRACE_OVERVIEW("Scanner", scanStep->getStepName());
 
             LMS_LOG(DBUPDATER, DEBUG, "Starting scan step '" << scanStep->getStepName() << "'");
-            scanContext.currentStepStats = ScanStepStats{ .startTime = Wt::WDateTime::currentDateTime(), .stepIndex = stepIndex++, .currentStep = scanStep->getStep() };
+            scanContext.currentStepStats = ScanStepStats{ .startTime = Wt::WDateTime::currentDateTime(), .stepCount = _scanSteps.size(), .stepIndex = stepIndex++, .currentStep = scanStep->getStep() };
 
             notifyInProgress(scanContext.currentStepStats);
             scanStep->process(scanContext);
@@ -339,11 +340,12 @@ namespace lms::scanner
             _db
         };
 
-        // Order is important
+        // Order is important, steps are sequential
         _scanSteps.clear();
         _scanSteps.push_back(std::make_unique<ScanStepDiscoverFiles>(params));
         _scanSteps.push_back(std::make_unique<ScanStepScanFiles>(params));
         _scanSteps.push_back(std::make_unique<ScanStepCheckForRemovedFiles>(params));
+        _scanSteps.push_back(std::make_unique<ScanStepUpdateLibraryFields>(params));
         _scanSteps.push_back(std::make_unique<ScanStepAssociateArtistImages>(params));
         _scanSteps.push_back(std::make_unique<ScanStepRemoveOrphanedDbEntries>(params));
         _scanSteps.push_back(std::make_unique<ScanStepCompact>(params));

src/libs/services/scanner/include/services/scanner/ScannerStats.hpp

@@ -72,14 +72,15 @@ namespace lms::scanner
         ReloadSimilarityEngine,
         RemoveOrphanedDbEntries,
         ScanFiles,
+        UpdateLibraryFields,
     };
-    static inline constexpr unsigned ScanProgressStepCount{ 11 };
 
     // reduced scan stats
     struct ScanStepStats
     {
         Wt::WDateTime startTime;
 
+        std::size_t stepCount{};
         std::size_t stepIndex{};
         ScanStep currentStep;
 

src/libs/subsonic/impl/RequestContext.hpp

@@ -27,6 +27,7 @@
 
 #include "ClientInfo.hpp"
 #include "ProtocolVersion.hpp"
+#include "SubsonicResponse.hpp"
 
 namespace lms::db
 {
@@ -43,6 +44,7 @@ namespace lms::api::subsonic
         const db::ObjectPtr<db::User> user;
         ClientInfo clientInfo;
         ProtocolVersion serverProtocolVersion;
+        ResponseFormat responseFormat;
         bool enableOpenSubsonic{ true };
         bool enableDefaultCover{};
     };

src/libs/subsonic/impl/SubsonicId.cpp

@@ -31,6 +31,11 @@ namespace lms::api::subsonic
         return "ar-" + id.toString();
     }
 
+    std::string idToString(db::DirectoryId id)
+    {
+        return "dir-" + id.toString();
+    }
+
     std::string idToString(db::MediaLibraryId id)
     {
         // No need to prefix as this is only used at well known places
@@ -76,6 +81,22 @@ namespace lms::core::stringUtils
         return std::nullopt;
     }
 
+    template<>
+    std::optional<db::DirectoryId> readAs(std::string_view str)
+    {
+        std::vector<std::string_view> values{ core::stringUtils::splitString(str, '-') };
+        if (values.size() != 2)
+            return std::nullopt;
+
+        if (values[0] != "dir")
+            return std::nullopt;
+
+        if (const auto value{ core::stringUtils::readAs<db::DirectoryId::ValueType>(values[1]) })
+            return db::DirectoryId{ *value };
+
+        return std::nullopt;
+    }
+
     template<>
     std::optional<db::MediaLibraryId> readAs(std::string_view str)
     {

src/libs/subsonic/impl/SubsonicId.hpp

@@ -21,6 +21,7 @@
 
 #include "core/String.hpp"
 #include "database/ArtistId.hpp"
+#include "database/DirectoryId.hpp"
 #include "database/MediaLibraryId.hpp"
 #include "database/ReleaseId.hpp"
 #include "database/TrackId.hpp"
@@ -33,6 +34,7 @@ namespace lms::api::subsonic
     };
 
     std::string idToString(db::ArtistId id);
+    std::string idToString(db::DirectoryId id);
     std::string idToString(db::MediaLibraryId id);
     std::string idToString(db::ReleaseId id);
     std::string idToString(db::TrackId id);
@@ -49,6 +51,9 @@ namespace lms::core::stringUtils
     template<>
     std::optional<db::ArtistId> readAs(std::string_view str);
 
+    template<>
+    std::optional<db::DirectoryId> readAs(std::string_view str);
+
     template<>
     std::optional<db::MediaLibraryId> readAs(std::string_view str);
 

src/libs/subsonic/impl/SubsonicResource.cpp

@@ -168,7 +168,7 @@ namespace lms::api::subsonic
             { "/getAlbum", { handleGetAlbumRequest } },
             { "/getSong", { handleGetSongRequest } },
             { "/getVideos", { handleNotImplemented } },
-            { "/getArtistInfo", { handleGetArtistInfoRequest } },
+            { "/getArtistInfo", { handleNotImplemented } },
             { "/getArtistInfo2", { handleGetArtistInfo2Request } },
             { "/getAlbumInfo", { handleNotImplemented } },
             { "/getAlbumInfo2", { handleNotImplemented } },
@@ -411,6 +411,7 @@ namespace lms::api::subsonic
         const db::UserId userId{ authenticateUser(request, clientInfo) };
         bool enableOpenSubsonic{ _openSubsonicDisabledClients.find(clientInfo.name) == std::cend(_openSubsonicDisabledClients) };
         bool enableDefaultCover{ _defaultCoverClients.find(clientInfo.name) != std::cend(_openSubsonicDisabledClients) };
+        const ResponseFormat format{ getParameterAs<std::string>(request.getParameterMap(), "f").value_or("xml") == "json" ? ResponseFormat::json : ResponseFormat::xml };
 
         db::User::pointer user;
         {
@@ -422,7 +423,16 @@ namespace lms::api::subsonic
                 throw UserNotAuthorizedError{};
         }
 
-        return { parameters, _db.getTLSSession(), user, clientInfo, getServerProtocolVersion(clientInfo.name), enableOpenSubsonic, enableDefaultCover };
+        return RequestContext{
+            .parameters = parameters,
+            .dbSession = _db.getTLSSession(),
+            .user = user,
+            .clientInfo = clientInfo,
+            .serverProtocolVersion = getServerProtocolVersion(clientInfo.name),
+            .responseFormat = format,
+            .enableOpenSubsonic = enableOpenSubsonic,
+            .enableDefaultCover = enableDefaultCover
+        };
     }
 
     db::UserId SubsonicResource::authenticateUser(const Wt::Http::Request& request, const ClientInfo& clientInfo)

src/libs/subsonic/impl/SubsonicResponse.cpp

@@ -193,18 +193,6 @@ namespace lms::api::subsonic
         std::function<boost::property_tree::ptree(const Node&)> nodeToPropertyTree = [&](const Node& node) {
             boost::property_tree::ptree res;
 
-            for (const auto& [key, value] : node._attributes)
-            {
-                if (std::holds_alternative<Node::string>(value))
-                    res.put("<xmlattr>." + std::string{ key.str() }, std::get<Node::string>(value));
-                else if (std::holds_alternative<bool>(value))
-                    res.put("<xmlattr>." + std::string{ key.str() }, std::get<bool>(value));
-                else if (std::holds_alternative<float>(value))
-                    res.put("<xmlattr>." + std::string{ key.str() }, std::get<float>(value));
-                else if (std::holds_alternative<long long>(value))
-                    res.put("<xmlattr>." + std::string{ key.str() }, std::get<long long>(value));
-            }
-
             auto valueToPropertyTree = [](const Node::ValueType& value) {
                 boost::property_tree::ptree res;
                 std::visit([&](const auto& rawValue) {
@@ -239,6 +227,20 @@ namespace lms::api::subsonic
                 }
             }
 
+            for (const auto& [key, value] : node._attributes)
+            {
+                if (std::holds_alternative<Node::string>(value))
+                    res.put("<xmlattr>." + std::string{ key.str() }, std::get<Node::string>(value));
+                else if (std::holds_alternative<bool>(value))
+                    res.put("<xmlattr>." + std::string{ key.str() }, std::get<bool>(value));
+                else if (std::holds_alternative<float>(value))
+                    res.put("<xmlattr>." + std::string{ key.str() }, std::get<float>(value));
+                else if (std::holds_alternative<long long>(value))
+                    res.put("<xmlattr>." + std::string{ key.str() }, std::get<long long>(value));
+                else
+                    assert(false);
+            }
+
             return res;
         };
 
@@ -264,74 +266,64 @@ namespace lms::api::subsonic
             first = false;
         }
 
-        if (node._value)
+        // Values are handled manually (using attributes) in json format
+        assert(!node._value);
+
+        for (const auto& [key, childNode] : node._children)
         {
             if (!first)
                 os << ',';
 
-            os << "\"value\":";
-            serializeValue(os, *node._value);
+            serializeEscapedString(os, key.str());
+            os << ':';
+            serializeNode(os, childNode);
 
             first = false;
         }
-        else
+
+        for (const auto& [key, childArrayNodes] : node._childrenArrays)
         {
-            for (const auto& [key, childNode] : node._children)
-            {
-                if (!first)
-                    os << ',';
+            if (!first)
+                os << ',';
+
+            serializeEscapedString(os, key.str());
+            os << ":[";
+
+            bool firstChild{ true };
+            for (const Response::Node& childNode : childArrayNodes)
+            {
+                if (!firstChild)
+                    os << ",";
 
-                serializeEscapedString(os, key.str());
-                os << ':';
                 serializeNode(os, childNode);
-
-                first = false;
+                firstChild = false;
             }
+            os << ']';
 
-            for (const auto& [key, childArrayNodes] : node._childrenArrays)
+            first = false;
+        }
+
+        for (const auto& [key, childValues] : node._childrenValues)
+        {
+            if (!first)
+                os << ',';
+
+            serializeEscapedString(os, key.str());
+            os << ":[";
+
+            bool firstChild{ true };
+            for (const Node::ValueType& childValue : childValues)
             {
-                if (!first)
-                    os << ',';
+                if (!firstChild)
+                    os << ",";
 
-                serializeEscapedString(os, key.str());
-                os << ":[";
+                serializeValue(os, childValue);
 
-                bool firstChild{ true };
-                for (const Response::Node& childNode : childArrayNodes)
-                {
-                    if (!firstChild)
-                        os << ",";
-
-                    serializeNode(os, childNode);
-                    firstChild = false;
-                }
-                os << ']';
-
-                first = false;
+                firstChild = false;
             }
+            os << ']';
 
-            for (const auto& [key, childValues] : node._childrenValues)
-            {
-                if (!first)
-                    os << ',';
-
-                serializeEscapedString(os, key.str());
-                os << ":[";
-
-                bool firstChild{ true };
-                for (const Node::ValueType& childValue : childValues)
-                {
-                    if (!firstChild)
-                        os << ",";
-
-                    serializeValue(os, childValue);
-
-                    firstChild = false;
-                }
-                os << ']';
-
-                first = false;
-            }
+            first = false;
         }
 
         os << '}';

src/libs/subsonic/impl/SubsonicResponse.hpp

@@ -27,7 +27,7 @@
 
 #include "core/LiteralString.hpp"
 
-#include "RequestContext.hpp"
+#include "ProtocolVersion.hpp"
 #include "SubsonicResponseAllocator.hpp"
 
 namespace lms::api::subsonic

src/libs/subsonic/impl/entrypoints/AlbumSongLists.cpp

@@ -169,7 +169,7 @@ namespace lms::api::subsonic
             for (const ReleaseId releaseId : releases.results)
             {
                 const Release::pointer release{ Release::find(context.dbSession, releaseId) };
-                albumListNode.addArrayChild("album", createAlbumNode(context, release, context.user, id3));
+                albumListNode.addArrayChild("album", createAlbumNode(context, release, id3));
             }
 
             return response;
@@ -187,6 +187,8 @@ namespace lms::api::subsonic
 
             feedback::IFeedbackService& feedbackService{ *core::Service<feedback::IFeedbackService>::get() };
 
+            // We don't support starring directories
+            if (id3)
             {
                 feedback::IFeedbackService::ArtistFindParameters artistFindParams;
                 artistFindParams.setUser(context.user->getId());
@@ -194,7 +196,7 @@ namespace lms::api::subsonic
                 for (const ArtistId artistId : feedbackService.findStarredArtists(artistFindParams).results)
                 {
                     if (auto artist{ Artist::find(context.dbSession, artistId) })
-                        starredNode.addArrayChild("artist", createArtistNode(context, artist, context.user, id3));
+                        starredNode.addArrayChild("artist", createArtistNode(context, artist));
                 }
             }
 
@@ -205,7 +207,7 @@ namespace lms::api::subsonic
             for (const ReleaseId releaseId : feedbackService.findStarredReleases(findParameters).results)
             {
                 if (auto release{ Release::find(context.dbSession, releaseId) })
-                    starredNode.addArrayChild("album", createAlbumNode(context, release, context.user, id3));
+                    starredNode.addArrayChild("album", createAlbumNode(context, release, id3));
             }
 
             for (const TrackId trackId : feedbackService.findStarredTracks(findParameters).results)

src/libs/subsonic/impl/entrypoints/Browsing.cpp

@@ -24,11 +24,13 @@
 #include "core/Service.hpp"
 #include "database/Artist.hpp"
 #include "database/Cluster.hpp"
+#include "database/Directory.hpp"
 #include "database/MediaLibrary.hpp"
 #include "database/Release.hpp"
 #include "database/Session.hpp"
 #include "database/Track.hpp"
 #include "database/User.hpp"
+#include "services/feedback/IFeedbackService.hpp"
 #include "services/recommendation/IRecommendationService.hpp"
 #include "services/scrobbling/IScrobblingService.hpp"
 
@@ -48,123 +50,58 @@ namespace lms::api::subsonic
 
     namespace
     {
-        Response handleGetArtistInfoRequestCommon(RequestContext& context, bool id3)
+        std::vector<Directory::pointer> getRootDirectories(Session& session, MediaLibraryId libraryId)
         {
-            // Mandatory params
-            ArtistId id{ getMandatoryParameterAs<ArtistId>(context.parameters, "id") };
-
-            // Optional params
-            std::size_t count{ getParameterAs<std::size_t>(context.parameters, "count").value_or(20) };
-
-            Response response{ Response::createOkResponse(context.serverProtocolVersion) };
-            Response::Node& artistInfoNode{ response.createNode(id3 ? Response::Node::Key{ "artistInfo2" } : Response::Node::Key{ "artistInfo" }) };
+            std::vector<Directory::pointer> res;
 
+            if (libraryId.isValid())
             {
-                auto transaction{ context.dbSession.createReadTransaction() };
+                const MediaLibrary::pointer library{ MediaLibrary::find(session, libraryId) };
+                if (!library)
+                    throw BadParameterGenericError{ "id" };
 
-                const Artist::pointer artist{ Artist::find(context.dbSession, id) };
-                if (!artist)
-                    throw RequestedDataNotFoundError{};
-
-                std::optional<core::UUID> artistMBID{ artist->getMBID() };
-                if (artistMBID)
-                    artistInfoNode.createChild("musicBrainzId").setValue(artistMBID->getAsString());
+                if (Directory::pointer rootDirectory{ Directory::find(session, library->getPath()) })
+                    res.push_back(rootDirectory);
+            }
+            else
+            {
+                res = Directory::findRootDirectories(session).results;
             }
 
-            auto similarArtistsId{ core::Service<recommendation::IRecommendationService>::get()->getSimilarArtists(id, { TrackArtistLinkType::Artist, TrackArtistLinkType::ReleaseArtist }, count) };
-
-            {
-                auto transaction{ context.dbSession.createReadTransaction() };
-
-                for (const ArtistId similarArtistId : similarArtistsId)
-                {
-                    const Artist::pointer similarArtist{ Artist::find(context.dbSession, similarArtistId) };
-                    if (similarArtist)
-                        artistInfoNode.addArrayChild("similarArtist", createArtistNode(context, similarArtist, context.user, id3));
-                }
-            }
-
-            return response;
+            return res;
         }
 
-        Response handleGetArtistsRequestCommon(RequestContext& context, bool id3)
+        struct IndexComparator
         {
-            // Optional params
-            const MediaLibraryId mediaLibrary{ getParameterAs<MediaLibraryId>(context.parameters, "musicFolderId").value_or(MediaLibraryId{}) };
-
-            Response response{ Response::createOkResponse(context.serverProtocolVersion) };
-
-            Response::Node& artistsNode{ response.createNode(id3 ? "artists" : "indexes") };
-            artistsNode.setAttribute("ignoredArticles", "");
-            artistsNode.setAttribute("lastModified", reportedDummyDateULong); // TODO report last file write?
-
-            Artist::FindParameters parameters;
+            constexpr bool operator()(char lhs, char rhs) const
             {
-                auto transaction{ context.dbSession.createReadTransaction() };
+                if (lhs == '#' && std::isalpha(rhs))
+                    return false;
+                if (rhs == '#' && std::isalpha(lhs))
+                    return true;
 
-                parameters.setSortMethod(ArtistSortMethod::SortName);
-                switch (context.user->getSubsonicArtistListMode())
-                {
-                case SubsonicArtistListMode::AllArtists:
-                    break;
-                case SubsonicArtistListMode::ReleaseArtists:
-                    parameters.setLinkType(TrackArtistLinkType::ReleaseArtist);
-                    break;
-                case SubsonicArtistListMode::TrackArtists:
-                    parameters.setLinkType(TrackArtistLinkType::Artist);
-                    break;
-                }
+                return lhs < rhs;
             }
-            parameters.setMediaLibrary(mediaLibrary);
+        };
 
-            // This endpoint does not scale: make sort lived transactions in order not to block the whole application
+        using IndexMap = std::map<char, std::vector<Directory::pointer>, IndexComparator>;
+        void getIndexedChildDirectories(RequestContext& context, const Directory::pointer& parentDirectory, IndexMap& res)
+        {
+            Directory::FindParameters params;
+            params.setParentDirectory(parentDirectory->getId());
 
-            // first pass: dispatch the artists by first letter
-            LMS_LOG(API_SUBSONIC, DEBUG, "GetArtists: fetching all artists...");
-            std::map<char, std::vector<ArtistId>> artistsSortedByFirstChar;
-            std::size_t currentArtistOffset{ 0 };
-            constexpr std::size_t batchSize{ 100 };
-            bool hasMoreArtists{ true };
-            while (hasMoreArtists)
-            {
-                auto transaction{ context.dbSession.createReadTransaction() };
+            Directory::find(context.dbSession, params, [&](const Directory::pointer& directory) {
+                const std::string_view name{ directory->getName() };
+                assert(!name.empty());
 
-                parameters.setRange(Range{ currentArtistOffset, batchSize });
-                const auto artists{ Artist::find(context.dbSession, parameters) };
-                for (const Artist::pointer& artist : artists.results)
-                {
-                    std::string_view sortName{ artist->getSortName() };
+                char sortChar;
+                if (name.empty() || !std::isalpha(name[0]))
+                    sortChar = '#';
+                else
+                    sortChar = std::toupper(name[0]);
 
-                    char sortChar;
-                    if (sortName.empty() || !std::isalpha(sortName[0]))
-                        sortChar = '?';
-                    else
-                        sortChar = std::toupper(sortName[0]);
-
-                    artistsSortedByFirstChar[sortChar].push_back(artist->getId());
-                }
-
-                hasMoreArtists = artists.moreResults;
-                currentArtistOffset += artists.results.size();
-            }
-
-            // second pass: add each artist
-            LMS_LOG(API_SUBSONIC, DEBUG, "GetArtists: constructing response...");
-            for (const auto& [sortChar, artistIds] : artistsSortedByFirstChar)
-            {
-                Response::Node& indexNode{ artistsNode.createArrayChild("index") };
-                indexNode.setAttribute("name", std::string{ sortChar });
-
-                for (const ArtistId artistId : artistIds)
-                {
-                    auto transaction{ context.dbSession.createReadTransaction() };
-
-                    if (const Artist::pointer artist{ Artist::find(context.dbSession, artistId) })
-                        indexNode.addArrayChild("artist", createArtistNode(context, artist, context.user, id3));
-                }
-            }
-
-            return response;
+                res[sortChar].push_back(directory);
+            });
         }
 
         std::vector<TrackId> findSimilarSongs(RequestContext& context, ArtistId artistId, std::size_t count)
@@ -266,6 +203,21 @@ namespace lms::api::subsonic
             return response;
         }
 
+        Release::pointer getReleaseFromDirectory(Session& session, DirectoryId directoryId)
+        {
+            auto transaction{ session.createReadTransaction() };
+
+            Release::FindParameters params;
+            params.setDirectory(directoryId);
+            params.setRange(Range{ 0, 1 }); // only support 1 directory <-> 1 release
+
+            Release::pointer res;
+            Release::find(session, params, [&](const Release::pointer& release) {
+                res = release;
+            });
+
+            return res;
+        }
     } // namespace
 
     Response handleGetMusicFoldersRequest(RequestContext& context)
@@ -286,64 +238,112 @@ namespace lms::api::subsonic
 
     Response handleGetIndexesRequest(RequestContext& context)
     {
-        return handleGetArtistsRequestCommon(context, false /* no id3 */);
+        // Optional params
+        const MediaLibraryId mediaLibrary{ getParameterAs<MediaLibraryId>(context.parameters, "musicFolderId").value_or(MediaLibraryId{}) };
+
+        Response response{ Response::createOkResponse(context.serverProtocolVersion) };
+        Response::Node& indexesNode{ response.createNode("indexes") };
+        indexesNode.setAttribute("ignoredArticles", "");
+        indexesNode.setAttribute("lastModified", reportedDummyDateULong); // TODO report last file write?
+
+        auto transaction{ context.dbSession.createReadTransaction() };
+
+        const std::vector<Directory::pointer> rootDirectories{ getRootDirectories(context.dbSession, mediaLibrary) };
+
+        IndexMap indexedDirectories;
+        for (const Directory::pointer& rootdirectory : rootDirectories)
+        {
+            Track::FindParameters params;
+            params.setDirectory(rootdirectory->getId());
+
+            Track::find(context.dbSession, params, [&](const Track::pointer& track) {
+                indexesNode.addArrayChild("child", createSongNode(context, track, context.user));
+            });
+
+            getIndexedChildDirectories(context, rootdirectory, indexedDirectories);
+        }
+
+        for (const auto& [index, directories] : indexedDirectories)
+        {
+            Response::Node& indexNode{ indexesNode.createArrayChild("index") };
+            indexNode.setAttribute("name", std::string{ index });
+
+            for (const Directory::pointer& directory : directories)
+            {
+                // Legacy behavior: all sub directories are considered as artists (even if this is just containing an album, or just an intermediary directory)
+
+                Response::Node childNode;
+                childNode.setAttribute("id", idToString(directory->getId()));
+                childNode.setAttribute("name", directory->getName());
+
+                indexNode.addArrayChild("artist", std::move(childNode));
+            }
+        }
+
+        return response;
     }
 
     Response handleGetMusicDirectoryRequest(RequestContext& context)
     {
         // Mandatory params
-        const auto artistId{ getParameterAs<ArtistId>(context.parameters, "id") };
-        const auto releaseId{ getParameterAs<ReleaseId>(context.parameters, "id") };
-        const auto root{ getParameterAs<RootId>(context.parameters, "id") };
-
-        if (!root && !artistId && !releaseId)
-            throw BadParameterGenericError{ "id" };
+        const auto directoryId{ getMandatoryParameterAs<DirectoryId>(context.parameters, "id") };
 
         Response response{ Response::createOkResponse(context.serverProtocolVersion) };
         Response::Node& directoryNode{ response.createNode("directory") };
 
         auto transaction{ context.dbSession.createReadTransaction() };
 
-        if (root)
-        {
-            directoryNode.setAttribute("id", idToString(RootId{}));
-            directoryNode.setAttribute("name", "Music");
+        const Directory::pointer directory{ Directory::find(context.dbSession, directoryId) };
+        if (!directory)
+            throw RequestedDataNotFoundError{};
 
-            // TODO: this does not scale when a lot of artists are present
-            Artist::find(context.dbSession, Artist::FindParameters{}.setSortMethod(ArtistSortMethod::SortName), [&](const Artist::pointer& artist) {
-                directoryNode.addArrayChild("child", createArtistNode(context, artist, context.user, false /* no id3 */));
+        if (const Release::pointer release{ getReleaseFromDirectory(context.dbSession, directoryId) })
+        {
+            directoryNode.setAttribute("playCount", core::Service<scrobbling::IScrobblingService>::get()->getCount(context.user->getId(), release->getId()));
+            if (const Wt::WDateTime dateTime{ core::Service<feedback::IFeedbackService>::get()->getStarredDateTime(context.user->getId(), release->getId()) }; dateTime.isValid())
+                directoryNode.setAttribute("starred", core::stringUtils::toISO8601String(dateTime));
+        }
+
+        directoryNode.setAttribute("id", idToString(directory->getId()));
+        directoryNode.setAttribute("name", directory->getName());
+        // Original Subsonic does not report parent if this the parent directory is the root directory
+        if (const Directory::pointer parentDirectory{ directory->getParentDirectory() })
+            directoryNode.setAttribute("parent", idToString(parentDirectory->getId()));
+
+        // list all sub directories
+        {
+            Directory::FindParameters params;
+            params.setParentDirectory(directory->getId());
+
+            Directory::find(context.dbSession, params, [&](const Directory::pointer& subDirectory) {
+                const Release::pointer release{ getReleaseFromDirectory(context.dbSession, subDirectory->getId()) };
+
+                if (release)
+                {
+                    directoryNode.addArrayChild("child", createAlbumNode(context, release, false, subDirectory));
+                }
+                else
+                {
+                    Response::Node childNode;
+                    childNode.setAttribute("id", idToString(subDirectory->getId()));
+                    childNode.setAttribute("title", subDirectory->getName());
+                    childNode.setAttribute("isDir", true);
+                    childNode.setAttribute("parent", idToString(directory->getId()));
+
+                    directoryNode.addArrayChild("child", std::move(childNode));
+                }
             });
         }
-        else if (artistId)
+
+        // list all tracks
         {
-            directoryNode.setAttribute("id", idToString(*artistId));
+            Track::FindParameters params;
+            params.setDirectory(directory->getId());
 
-            auto artist{ Artist::find(context.dbSession, *artistId) };
-            if (!artist)
-                throw RequestedDataNotFoundError{};
-
-            directoryNode.setAttribute("name", utils::makeNameFilesystemCompatible(artist->getName()));
-
-            Release::find(context.dbSession, Release::FindParameters{}.setArtist(*artistId), [&](const Release::pointer& release) {
-                directoryNode.addArrayChild("child", createAlbumNode(context, release, context.user, false /* no id3 */));
-            });
-        }
-        else if (releaseId)
-        {
-            directoryNode.setAttribute("id", idToString(*releaseId));
-
-            auto release{ Release::find(context.dbSession, *releaseId) };
-            if (!release)
-                throw RequestedDataNotFoundError{};
-
-            directoryNode.setAttribute("name", utils::makeNameFilesystemCompatible(release->getName()));
-
-            Track::find(context.dbSession, Track::FindParameters{}.setRelease(*releaseId).setSortMethod(TrackSortMethod::Release), [&](const Track::pointer& track) {
+            Track::find(context.dbSession, params, [&](const Track::pointer& track) {
                 directoryNode.addArrayChild("child", createSongNode(context, track, context.user));
             });
         }
-        else
-            throw BadParameterGenericError{ "id" };
 
         return response;
     }
@@ -362,7 +362,7 @@ namespace lms::api::subsonic
             const auto clusters{ clusterType->getClusters() };
 
             for (const Cluster::pointer& cluster : clusters)
-                genresNode.addArrayChild("genre", createGenreNode(cluster));
+                genresNode.addArrayChild("genre", createGenreNode(context, cluster));
         }
 
         return response;
@@ -370,7 +370,82 @@ namespace lms::api::subsonic
 
     Response handleGetArtistsRequest(RequestContext& context)
     {
-        return handleGetArtistsRequestCommon(context, true /* id3 */);
+        // Optional params
+        const MediaLibraryId mediaLibrary{ getParameterAs<MediaLibraryId>(context.parameters, "musicFolderId").value_or(MediaLibraryId{}) };
+
+        Response response{ Response::createOkResponse(context.serverProtocolVersion) };
+
+        Response::Node& artistsNode{ response.createNode("artists") };
+        artistsNode.setAttribute("ignoredArticles", "");
+        artistsNode.setAttribute("lastModified", reportedDummyDateULong); // TODO report last file write?
+
+        Artist::FindParameters parameters;
+        {
+            auto transaction{ context.dbSession.createReadTransaction() };
+
+            parameters.setSortMethod(ArtistSortMethod::SortName);
+            switch (context.user->getSubsonicArtistListMode())
+            {
+            case SubsonicArtistListMode::AllArtists:
+                break;
+            case SubsonicArtistListMode::ReleaseArtists:
+                parameters.setLinkType(TrackArtistLinkType::ReleaseArtist);
+                break;
+            case SubsonicArtistListMode::TrackArtists:
+                parameters.setLinkType(TrackArtistLinkType::Artist);
+                break;
+            }
+        }
+        parameters.setMediaLibrary(mediaLibrary);
+
+        // This endpoint does not scale: make sort lived transactions in order not to block the whole application
+
+        // first pass: dispatch the artists by first letter
+        LMS_LOG(API_SUBSONIC, DEBUG, "GetArtists: fetching all artists...");
+        std::map<char, std::vector<ArtistId>> artistsSortedByFirstChar;
+        std::size_t currentArtistOffset{ 0 };
+        constexpr std::size_t batchSize{ 100 };
+        bool hasMoreArtists{ true };
+        while (hasMoreArtists)
+        {
+            auto transaction{ context.dbSession.createReadTransaction() };
+
+            parameters.setRange(Range{ currentArtistOffset, batchSize });
+            const auto artists{ Artist::find(context.dbSession, parameters) };
+            for (const Artist::pointer& artist : artists.results)
+            {
+                std::string_view sortName{ artist->getSortName() };
+
+                char sortChar;
+                if (sortName.empty() || !std::isalpha(sortName[0]))
+                    sortChar = '#';
+                else
+                    sortChar = std::toupper(sortName[0]);
+
+                artistsSortedByFirstChar[sortChar].push_back(artist->getId());
+            }
+
+            hasMoreArtists = artists.moreResults;
+            currentArtistOffset += artists.results.size();
+        }
+
+        // second pass: add each artist
+        LMS_LOG(API_SUBSONIC, DEBUG, "GetArtists: constructing response...");
+        for (const auto& [sortChar, artistIds] : artistsSortedByFirstChar)
+        {
+            Response::Node& indexNode{ artistsNode.createArrayChild("index") };
+            indexNode.setAttribute("name", std::string{ sortChar });
+
+            for (const ArtistId artistId : artistIds)
+            {
+                auto transaction{ context.dbSession.createReadTransaction() };
+
+                if (const Artist::pointer artist{ Artist::find(context.dbSession, artistId) })
+                    indexNode.addArrayChild("artist", createArtistNode(context, artist));
+            }
+        }
+
+        return response;
     }
 
     Response handleGetArtistRequest(RequestContext& context)
@@ -385,11 +460,11 @@ namespace lms::api::subsonic
             throw RequestedDataNotFoundError{};
 
         Response response{ Response::createOkResponse(context.serverProtocolVersion) };
-        Response::Node artistNode{ createArtistNode(context, artist, context.user, true /* id3 */) };
+        Response::Node artistNode{ createArtistNode(context, artist) };
 
         const auto releases{ Release::find(context.dbSession, Release::FindParameters{}.setArtist(artist->getId())) };
         for (const Release::pointer& release : releases.results)
-            artistNode.addArrayChild("album", createAlbumNode(context, release, context.user, true /* id3 */));
+            artistNode.addArrayChild("album", createAlbumNode(context, release, true /* id3 */));
 
         response.addNode("artist", std::move(artistNode));
 
@@ -408,11 +483,11 @@ namespace lms::api::subsonic
             throw RequestedDataNotFoundError{};
 
         Response response{ Response::createOkResponse(context.serverProtocolVersion) };
-        Response::Node albumNode{ createAlbumNode(context, release, context.user, true /* id3 */) };
+        Response::Node albumNode{ createAlbumNode(context, release, true /* id3 */) };
 
         const auto tracks{ Track::find(context.dbSession, Track::FindParameters{}.setRelease(id).setSortMethod(TrackSortMethod::Release)) };
         for (const Track::pointer& track : tracks.results)
-            albumNode.addArrayChild("song", createSongNode(context, track, context.user));
+            albumNode.addArrayChild("song", createSongNode(context, track, true /* id3 */));
 
         response.addNode("album", std::move(albumNode));
 
@@ -436,14 +511,53 @@ namespace lms::api::subsonic
         return response;
     }
 
-    Response handleGetArtistInfoRequest(RequestContext& context)
-    {
-        return handleGetArtistInfoRequestCommon(context, false /* no id3 */);
-    }
-
     Response handleGetArtistInfo2Request(RequestContext& context)
     {
-        return handleGetArtistInfoRequestCommon(context, true /* id3 */);
+        // Mandatory params
+        ArtistId id{ getMandatoryParameterAs<ArtistId>(context.parameters, "id") };
+
+        // Optional params
+        std::size_t count{ getParameterAs<std::size_t>(context.parameters, "count").value_or(20) };
+
+        Response response{ Response::createOkResponse(context.serverProtocolVersion) };
+        Response::Node& artistInfoNode{ response.createNode(Response::Node::Key{ "artistInfo2" }) };
+
+        {
+            auto transaction{ context.dbSession.createReadTransaction() };
+
+            const Artist::pointer artist{ Artist::find(context.dbSession, id) };
+            if (!artist)
+                throw RequestedDataNotFoundError{};
+
+            std::optional<core::UUID> artistMBID{ artist->getMBID() };
+            if (artistMBID)
+            {
+                switch (context.responseFormat)
+                {
+                case ResponseFormat::json:
+                    artistInfoNode.setAttribute("musicBrainzId", artistMBID->getAsString());
+                    break;
+                case ResponseFormat::xml:
+                    artistInfoNode.createChild("musicBrainzId").setValue(artistMBID->getAsString());
+                    break;
+                }
+            }
+        }
+
+        auto similarArtistsId{ core::Service<recommendation::IRecommendationService>::get()->getSimilarArtists(id, { TrackArtistLinkType::Artist, TrackArtistLinkType::ReleaseArtist }, count) };
+
+        {
+            auto transaction{ context.dbSession.createReadTransaction() };
+
+            for (const ArtistId similarArtistId : similarArtistsId)
+            {
+                const Artist::pointer similarArtist{ Artist::find(context.dbSession, similarArtistId) };
+                if (similarArtist)
+                    artistInfoNode.addArrayChild("similarArtist", createArtistNode(context, similarArtist));
+            }
+        }
+
+        return response;
     }
 
     Response handleGetSimilarSongsRequest(RequestContext& context)

src/libs/subsonic/impl/entrypoints/MediaAnnotation.cpp

@@ -23,7 +23,9 @@
 
 #include "core/Service.hpp"
 #include "database/ArtistId.hpp"
+#include "database/Release.hpp"
 #include "database/ReleaseId.hpp"
+#include "database/Session.hpp"
 #include "database/TrackId.hpp"
 #include "database/User.hpp"
 #include "services/feedback/IFeedbackService.hpp"
@@ -43,25 +45,50 @@ namespace lms::api::subsonic
             std::vector<ArtistId> artistIds;
             std::vector<ReleaseId> releaseIds;
             std::vector<TrackId> trackIds;
+            std::vector<DirectoryId> directoryIds;
         };
 
         StarParameters getStarParameters(const Wt::Http::ParameterMap& parameters)
         {
             StarParameters res;
 
-            // TODO handle parameters for legacy file browsing
+            // id could be either a trackId or a directory id
+            res.directoryIds = getMultiParametersAs<DirectoryId>(parameters, "id");
             res.trackIds = getMultiParametersAs<TrackId>(parameters, "id");
             res.artistIds = getMultiParametersAs<ArtistId>(parameters, "artistId");
             res.releaseIds = getMultiParametersAs<ReleaseId>(parameters, "albumId");
 
             return res;
         }
+
+        ReleaseId getReleaseFromDirectory(Session& session, DirectoryId directory)
+        {
+            auto transaction{ session.createReadTransaction() };
+
+            Release::FindParameters params;
+            params.setDirectory(directory);
+            params.setRange(Range{ 0, 1 }); // consider one directory <-> one release
+
+            Release::pointer res;
+            Release::find(session, params, [&](const Release::pointer& release) {
+                res = release;
+            });
+
+            return res ? res->getId() : ReleaseId{};
+        }
+
     } // namespace
 
     Response handleStarRequest(RequestContext& context)
     {
         StarParameters params{ getStarParameters(context.parameters) };
 
+        for (const DirectoryId id : params.directoryIds)
+        {
+            if (const ReleaseId releaseId{ getReleaseFromDirectory(context.dbSession, id) }; releaseId.isValid())
+                core::Service<feedback::IFeedbackService>::get()->star(context.user->getId(), releaseId);
+        }
+
         for (const ArtistId id : params.artistIds)
             core::Service<feedback::IFeedbackService>::get()->star(context.user->getId(), id);
 
@@ -78,6 +105,12 @@ namespace lms::api::subsonic
     {
         StarParameters params{ getStarParameters(context.parameters) };
 
+        for (const DirectoryId id : params.directoryIds)
+        {
+            if (const ReleaseId releaseId{ getReleaseFromDirectory(context.dbSession, id) }; releaseId.isValid())
+                core::Service<feedback::IFeedbackService>::get()->unstar(context.user->getId(), releaseId);
+        }
+
         for (const ArtistId id : params.artistIds)
             core::Service<feedback::IFeedbackService>::get()->unstar(context.user->getId(), id);
 

src/libs/subsonic/impl/entrypoints/Searching.cpp

@@ -25,6 +25,7 @@
 
 #include "core/Random.hpp"
 #include "database/Artist.hpp"
+#include "database/Directory.hpp"
 #include "database/Release.hpp"
 #include "database/Session.hpp"
 #include "database/Track.hpp"
@@ -113,7 +114,36 @@ namespace lms::api::subsonic
             _ongoingScans[scanInfo] = { now, lastRetrievedId };
         }
 
-        void findRequestedArtists(RequestContext& context, bool id3, const std::vector<std::string_view>& keywords, MediaLibraryId mediaLibrary, const User::pointer& user, Response::Node& searchResultNode)
+        void findRequestedArtistDirectories(RequestContext& context, const std::vector<std::string_view>& keywords, MediaLibraryId mediaLibrary, Response::Node& searchResultNode)
+        {
+            // For now, no need to optimize all this
+            // Find all the directories that match the name and that do not contain any track (considered by the legacy API as artists)
+            const std::size_t artistCount{ getParameterAs<std::size_t>(context.parameters, "artistCount").value_or(20) };
+            if (artistCount == 0)
+                return;
+
+            if (artistCount > defaultMaxCountSize)
+                throw ParameterValueTooHighGenericError{ "artistCount", defaultMaxCountSize };
+
+            const std::size_t artistOffset{ getParameterAs<std::size_t>(context.parameters, "artistOffset").value_or(0) };
+
+            Directory::FindParameters params;
+            params.setKeywords(keywords);
+            params.setRange(Range{ artistOffset, artistCount });
+            params.setWithNoTrack(true);
+            params.setMediaLibrary(mediaLibrary);
+
+            Directory::find(context.dbSession, params, [&](const Directory::pointer& directory) {
+                Response::Node childNode;
+                childNode.setAttribute("id", idToString(directory->getId()));
+                childNode.setAttribute("name", directory->getName());
+                childNode.setAttribute("isDir", true);
+
+                searchResultNode.addArrayChild("artist", std::move(childNode));
+            });
+        }
+
+        void findRequestedArtists(RequestContext& context, const std::vector<std::string_view>& keywords, MediaLibraryId mediaLibrary, Response::Node& searchResultNode)
         {
             static ScanTracker<ArtistId> currentScansInProgress;
 
@@ -135,7 +165,7 @@ namespace lms::api::subsonic
                 params.setSortMethod(ArtistSortMethod::Id); // must be consistent with both methods
 
                 Artist::find(context.dbSession, params, [&](const Artist::pointer& artist) {
-                    searchResultNode.addArrayChild("artist", createArtistNode(context, artist, user, id3));
+                    searchResultNode.addArrayChild("artist", createArtistNode(context, artist));
                     lastRetrievedId = artist->getId();
                 });
             } };
@@ -158,7 +188,7 @@ namespace lms::api::subsonic
                 {
                     Artist::find(
                         context.dbSession, cachedLastRetrievedId, artistCount, [&](const Artist::pointer& artist) {
-                            searchResultNode.addArrayChild("artist", createArtistNode(context, artist, user, id3));
+                            searchResultNode.addArrayChild("artist", createArtistNode(context, artist));
                         },
                         mediaLibrary);
                     lastRetrievedId = cachedLastRetrievedId;
@@ -176,7 +206,7 @@ namespace lms::api::subsonic
             }
         }
 
-        void findRequestedAlbums(RequestContext& context, bool id3, const std::vector<std::string_view>& keywords, MediaLibraryId mediaLibrary, const User::pointer& user, Response::Node& searchResultNode)
+        void findRequestedAlbums(RequestContext& context, bool id3, const std::vector<std::string_view>& keywords, MediaLibraryId mediaLibrary, Response::Node& searchResultNode)
         {
             static ScanTracker<ReleaseId> currentScansInProgress;
 
@@ -199,7 +229,7 @@ namespace lms::api::subsonic
                 params.setSortMethod(ReleaseSortMethod::Id); // must be consistent with both methods
 
                 Release::find(context.dbSession, params, [&](const Release::pointer& release) {
-                    searchResultNode.addArrayChild("album", createAlbumNode(context, release, user, id3));
+                    searchResultNode.addArrayChild("album", createAlbumNode(context, release, id3));
                     lastRetrievedId = release->getId();
                 });
             } };
@@ -222,7 +252,7 @@ namespace lms::api::subsonic
                 {
                     Release::find(
                         context.dbSession, cachedLastRetrievedId, albumCount, [&](const Release::pointer& release) {
-                            searchResultNode.addArrayChild("album", createAlbumNode(context, release, user, id3));
+                            searchResultNode.addArrayChild("album", createAlbumNode(context, release, id3));
                         },
                         mediaLibrary);
                     lastRetrievedId = cachedLastRetrievedId;
@@ -240,7 +270,7 @@ namespace lms::api::subsonic
             }
         }
 
-        void findRequestedTracks(RequestContext& context, const std::vector<std::string_view>& keywords, MediaLibraryId mediaLibrary, const User::pointer& user, Response::Node& searchResultNode)
+        void findRequestedTracks(RequestContext& context, bool id3, const std::vector<std::string_view>& keywords, MediaLibraryId mediaLibrary, Response::Node& searchResultNode)
         {
             static ScanTracker<TrackId> currentScansInProgress;
 
@@ -263,7 +293,7 @@ namespace lms::api::subsonic
                 params.setSortMethod(TrackSortMethod::Id); // must be consistent with both methods
 
                 Track::find(context.dbSession, params, [&](const Track::pointer& track) {
-                    searchResultNode.addArrayChild("song", createSongNode(context, track, user));
+                    searchResultNode.addArrayChild("song", createSongNode(context, track, id3));
                     lastRetrievedId = track->getId();
                 });
             } };
@@ -286,7 +316,7 @@ namespace lms::api::subsonic
                 {
                     Track::find(
                         context.dbSession, cachedLastRetrievedId, songCount, [&](const Track::pointer& track) {
-                            searchResultNode.addArrayChild("song", createSongNode(context, track, user));
+                            searchResultNode.addArrayChild("song", createSongNode(context, track, id3));
                         },
                         mediaLibrary);
                     lastRetrievedId = cachedLastRetrievedId;
@@ -303,10 +333,7 @@ namespace lms::api::subsonic
                 }
             }
         }
-    } // namespace
 
-    namespace
-    {
         Response handleSearchRequestCommon(RequestContext& context, bool id3)
         {
             // Mandatory params
@@ -329,9 +356,12 @@ namespace lms::api::subsonic
 
             auto transaction{ context.dbSession.createReadTransaction() };
 
-            findRequestedArtists(context, id3, keywords, mediaLibrary, context.user, searchResultNode);
-            findRequestedAlbums(context, id3, keywords, mediaLibrary, context.user, searchResultNode);
-            findRequestedTracks(context, keywords, mediaLibrary, context.user, searchResultNode);
+            if (id3)
+                findRequestedArtists(context, keywords, mediaLibrary, searchResultNode);
+            else
+                findRequestedArtistDirectories(context, keywords, mediaLibrary, searchResultNode);
+            findRequestedAlbums(context, id3, keywords, mediaLibrary, searchResultNode);
+            findRequestedTracks(context, id3, keywords, mediaLibrary, searchResultNode);
 
             return response;
         }

src/libs/subsonic/impl/entrypoints/UserManagement.cpp

@@ -35,7 +35,7 @@ namespace lms::api::subsonic
             throw RequestedDataNotFoundError{};
 
         Response response{ Response::createOkResponse(context.serverProtocolVersion) };
-        response.addNode("user", createUserNode(user));
+        response.addNode("user", createUserNode(context, user));
 
         return response;
     }
@@ -47,7 +47,7 @@ namespace lms::api::subsonic
 
         auto transaction{ context.dbSession.createReadTransaction() };
         User::find(context.dbSession, User::FindParameters{}, [&](const User::pointer& user) {
-            usersNode.addArrayChild("user", createUserNode(user));
+            usersNode.addArrayChild("user", createUserNode(context, user));
         });
 
         return response;

src/libs/subsonic/impl/responses/Album.cpp

@@ -24,11 +24,13 @@
 #include "core/String.hpp"
 #include "database/Artist.hpp"
 #include "database/Cluster.hpp"
+#include "database/Directory.hpp"
 #include "database/Release.hpp"
 #include "database/User.hpp"
 #include "services/feedback/IFeedbackService.hpp"
 #include "services/scrobbling/IScrobblingService.hpp"
 
+#include "RequestContext.hpp"
 #include "SubsonicId.hpp"
 #include "responses/Artist.hpp"
 #include "responses/DiscTitle.hpp"
@@ -39,7 +41,7 @@ namespace lms::api::subsonic
 {
     using namespace db;
 
-    Response::Node createAlbumNode(RequestContext& context, const Release::pointer& release, const User::pointer& user, bool id3)
+    Response::Node createAlbumNode(RequestContext& context, const Release::pointer& release, bool id3, const Directory::pointer& directory)
     {
         LMS_SCOPED_TRACE_DETAILED("Subsonic", "CreateAlbum");
 
@@ -47,21 +49,38 @@ namespace lms::api::subsonic
 
         if (id3)
         {
+            albumNode.setAttribute("id", idToString(release->getId()));
             albumNode.setAttribute("name", release->getName());
             albumNode.setAttribute("songCount", release->getTrackCount());
-            albumNode.setAttribute(
-                "duration", std::chrono::duration_cast<std::chrono::seconds>(
-                                release->getDuration())
-                                .count());
+            albumNode.setAttribute("duration", std::chrono::duration_cast<std::chrono::seconds>(release->getDuration()).count());
         }
         else
         {
-            albumNode.setAttribute("title", release->getName());
+            Directory::pointer directoryToReport{ directory };
+
+            if (!directoryToReport)
+            {
+                Directory::FindParameters params;
+                params.setRelease(release->getId());
+                params.setRange(Range{ 0, 1 }); // only support 1 directory <-> 1 release
+                Directory::find(context.dbSession, params, [&](const Directory::pointer& foundDirectory) {
+                    directoryToReport = foundDirectory;
+                });
+            }
+
+            if (directoryToReport)
+            {
+                albumNode.setAttribute("title", directoryToReport->getName());
+                albumNode.setAttribute("id", idToString(directoryToReport->getId()));
+                if (const Directory::pointer & parentDirectory{ directoryToReport->getParentDirectory() })
+                    albumNode.setAttribute("parent", idToString(parentDirectory->getId()));
+            }
+
+            albumNode.setAttribute("album", release->getName());
             albumNode.setAttribute("isDir", true);
         }
 
         albumNode.setAttribute("created", core::stringUtils::toISO8601String(release->getLastWritten()));
-        albumNode.setAttribute("id", idToString(release->getId()));
         albumNode.setAttribute("coverArt", idToString(release->getId()));
         if (const auto year{ release->getYear() })
             albumNode.setAttribute("year", *year);
@@ -70,11 +89,7 @@ namespace lms::api::subsonic
         if (artists.empty())
             artists = release->getArtists();
 
-        if (artists.empty() && !id3)
-        {
-            albumNode.setAttribute("parent", idToString(RootId{}));
-        }
-        else if (!artists.empty())
+        if (!artists.empty())
         {
             if (!release->getArtistDisplayName().empty())
                 albumNode.setAttribute("artist", release->getArtistDisplayName());
@@ -83,16 +98,11 @@ namespace lms::api::subsonic
 
             if (artists.size() == 1)
             {
-                albumNode.setAttribute(id3 ? Response::Node::Key{ "artistId" } : Response::Node::Key{ "parent" }, idToString(artists.front()->getId()));
-            }
-            else
-            {
-                if (!id3)
-                    albumNode.setAttribute("parent", idToString(RootId{}));
+                albumNode.setAttribute("artistId", idToString(artists.front()->getId()));
             }
         }
 
-        albumNode.setAttribute("playCount", core::Service<scrobbling::IScrobblingService>::get()->getCount(user->getId(), release->getId()));
+        albumNode.setAttribute("playCount", core::Service<scrobbling::IScrobblingService>::get()->getCount(context.user->getId(), release->getId()));
 
         // Report the first GENRE for this track
         const ClusterType::pointer genreClusterType{ ClusterType::find(context.dbSession, "GENRE") };
@@ -103,7 +113,7 @@ namespace lms::api::subsonic
                 albumNode.setAttribute("genre", clusters.front().front()->getName());
         }
 
-        if (const Wt::WDateTime dateTime{ core::Service<feedback::IFeedbackService>::get()->getStarredDateTime(user->getId(), release->getId()) }; dateTime.isValid())
+        if (const Wt::WDateTime dateTime{ core::Service<feedback::IFeedbackService>::get()->getStarredDateTime(context.user->getId(), release->getId()) }; dateTime.isValid())
             albumNode.setAttribute("starred", core::stringUtils::toISO8601String(dateTime));
 
         if (!context.enableOpenSubsonic)
@@ -111,12 +121,10 @@ namespace lms::api::subsonic
 
         // OpenSubsonic specific fields (must always be set)
         albumNode.setAttribute("sortName", release->getSortName());
-
-        if (!id3)
-            albumNode.setAttribute("mediaType", "album");
+        albumNode.setAttribute("mediaType", "album");
 
         {
-            const Wt::WDateTime dateTime{ core::Service<scrobbling::IScrobblingService>::get()->getLastListenDateTime(user->getId(), release->getId()) };
+            const Wt::WDateTime dateTime{ core::Service<scrobbling::IScrobblingService>::get()->getLastListenDateTime(context.user->getId(), release->getId()) };
             albumNode.setAttribute("played", dateTime.isValid() ? core::stringUtils::toISO8601String(dateTime) : std::string{ "" });
         }
 

src/libs/subsonic/impl/responses/Album.hpp

@@ -25,6 +25,7 @@
 
 namespace lms::db
 {
+    class Directory;
     class Release;
     class User;
     class Session;
@@ -32,5 +33,7 @@ namespace lms::db
 
 namespace lms::api::subsonic
 {
-    Response::Node createAlbumNode(RequestContext& context, const db::ObjectPtr<db::Release>& release, const db::ObjectPtr<db::User>& user, bool id3);
-}
+    class RequestContext;
+
+    Response::Node createAlbumNode(RequestContext& context, const db::ObjectPtr<db::Release>& release, bool id3, const db::ObjectPtr<db::Directory>& directory = {});
+} // namespace lms::api::subsonic

src/libs/subsonic/impl/responses/Artist.cpp

@@ -29,6 +29,7 @@
 #include "database/User.hpp"
 #include "services/feedback/IFeedbackService.hpp"
 
+#include "RequestContext.hpp"
 #include "SubsonicId.hpp"
 
 namespace lms::api::subsonic
@@ -85,7 +86,7 @@ namespace lms::api::subsonic
         }
     } // namespace utils
 
-    Response::Node createArtistNode(RequestContext& context, const Artist::pointer& artist, const User::pointer& user, bool id3)
+    Response::Node createArtistNode(RequestContext& context, const Artist::pointer& artist)
     {
         LMS_SCOPED_TRACE_DETAILED("Subsonic", "CreateArtist");
 
@@ -96,20 +97,16 @@ namespace lms::api::subsonic
         if (const db::Image::pointer artistImage{ artist->getImage() })
             artistNode.setAttribute("coverArt", idToString(artist->getId()));
 
-        if (id3)
-        {
-            const std::size_t count{ Release::getCount(context.dbSession, Release::FindParameters{}.setArtist(artist->getId())) };
-            artistNode.setAttribute("albumCount", count);
-        }
+        const std::size_t count{ Release::getCount(context.dbSession, Release::FindParameters{}.setArtist(artist->getId())) };
+        artistNode.setAttribute("albumCount", count);
 
-        if (const Wt::WDateTime dateTime{ core::Service<feedback::IFeedbackService>::get()->getStarredDateTime(user->getId(), artist->getId()) }; dateTime.isValid())
+        if (const Wt::WDateTime dateTime{ core::Service<feedback::IFeedbackService>::get()->getStarredDateTime(context.user->getId(), artist->getId()) }; dateTime.isValid())
             artistNode.setAttribute("starred", core::stringUtils::toISO8601String(dateTime));
 
         // OpenSubsonic specific fields (must always be set)
         if (context.enableOpenSubsonic)
         {
-            if (!id3)
-                artistNode.setAttribute("mediaType", "artist");
+            artistNode.setAttribute("mediaType", "artist");
 
             {
                 std::optional<core::UUID> mbid{ artist->getMBID() };

src/libs/subsonic/impl/responses/Artist.hpp

@@ -36,11 +36,14 @@ namespace lms::db
 
 namespace lms::api::subsonic
 {
+    class RequestContext;
+
     namespace utils
     {
         std::string joinArtistNames(const std::vector<db::ObjectPtr<db::Artist>>& artists);
         std::string_view toString(db::TrackArtistLinkType type);
     } // namespace utils
-    Response::Node createArtistNode(RequestContext& context, const db::ObjectPtr<db::Artist>& artist, const db::ObjectPtr<db::User>& user, bool id3);
+
+    Response::Node createArtistNode(RequestContext& context, const db::ObjectPtr<db::Artist>& artist);
     Response::Node createArtistNode(const db::ObjectPtr<db::Artist>& artist); // only minimal info
 } // namespace lms::api::subsonic

src/libs/subsonic/impl/responses/Genre.cpp

@@ -21,13 +21,23 @@
 
 #include "database/Cluster.hpp"
 
+#include "RequestContext.hpp"
+
 namespace lms::api::subsonic
 {
-    Response::Node createGenreNode(const db::Cluster::pointer& cluster)
+    Response::Node createGenreNode(RequestContext& context, const db::Cluster::pointer& cluster)
     {
         Response::Node clusterNode;
 
-        clusterNode.setValue(cluster->getName());
+        switch (context.responseFormat)
+        {
+        case ResponseFormat::json:
+            clusterNode.setAttribute("value", cluster->getName());
+            break;
+        case ResponseFormat::xml:
+            clusterNode.setValue(cluster->getName());
+            break;
+        }
         clusterNode.setAttribute("songCount", cluster->getTrackCount());
         clusterNode.setAttribute("albumCount", cluster->getReleasesCount());
 

src/libs/subsonic/impl/responses/Genre.hpp

@@ -30,5 +30,7 @@ namespace lms::db
 
 namespace lms::api::subsonic
 {
-    Response::Node createGenreNode(const db::ObjectPtr<db::Cluster>& cluster);
-}
+    class RequestContext;
+
+    Response::Node createGenreNode(RequestContext& context, const db::ObjectPtr<db::Cluster>& cluster);
+} // namespace lms::api::subsonic

src/libs/subsonic/impl/responses/Song.cpp

@@ -27,6 +27,7 @@
 #include "core/String.hpp"
 #include "database/Artist.hpp"
 #include "database/Cluster.hpp"
+#include "database/Directory.hpp"
 #include "database/Release.hpp"
 #include "database/Track.hpp"
 #include "database/TrackArtistLink.hpp"
@@ -34,6 +35,7 @@
 #include "services/feedback/IFeedbackService.hpp"
 #include "services/scrobbling/IScrobblingService.hpp"
 
+#include "RequestContext.hpp"
 #include "SubsonicId.hpp"
 #include "Utils.hpp"
 #include "responses/Artist.hpp"
@@ -67,14 +69,20 @@ namespace lms::api::subsonic
         }
     } // namespace
 
-    Response::Node createSongNode(RequestContext& context, const Track::pointer& track, const User::pointer& user)
+    Response::Node createSongNode(RequestContext& context, const Track::pointer& track, bool id3)
     {
         LMS_SCOPED_TRACE_DETAILED("Subsonic", "CreateSong");
 
         Response::Node trackResponse;
 
+        if (!id3)
+        {
+            if (const auto directory{ track->getDirectory() })
+                trackResponse.setAttribute("parent", idToString(directory->getId()));
+            trackResponse.setAttribute("isDir", false);
+        }
+
         trackResponse.setAttribute("id", idToString(track->getId()));
-        trackResponse.setAttribute("isDir", false);
         trackResponse.setAttribute("title", track->getName());
         if (track->getTrackNumber())
             trackResponse.setAttribute("track", *track->getTrackNumber());
@@ -82,7 +90,7 @@ namespace lms::api::subsonic
             trackResponse.setAttribute("discNumber", *track->getDiscNumber());
         if (track->getYear())
             trackResponse.setAttribute("year", *track->getYear());
-        trackResponse.setAttribute("playCount", core::Service<scrobbling::IScrobblingService>::get()->getCount(user->getId(), track->getId()));
+        trackResponse.setAttribute("playCount", core::Service<scrobbling::IScrobblingService>::get()->getCount(context.user->getId(), track->getId()));
         trackResponse.setAttribute("path", track->getRelativeFilePath().string());
         trackResponse.setAttribute("size", track->getFileSize());
 
@@ -93,12 +101,13 @@ namespace lms::api::subsonic
         }
 
         {
-            const std::string fileSuffix{ formatToSuffix(user->getSubsonicDefaultTranscodingOutputFormat()) };
+            const std::string fileSuffix{ formatToSuffix(context.user->getSubsonicDefaultTranscodingOutputFormat()) };
             trackResponse.setAttribute("transcodedSuffix", fileSuffix);
             trackResponse.setAttribute("transcodedContentType", av::getMimeType(std::filesystem::path{ "." + fileSuffix }));
         }
 
-        trackResponse.setAttribute("coverArt", idToString(track->getId()));
+        if (track->hasCover())
+            trackResponse.setAttribute("coverArt", idToString(track->getId()));
 
         const std::vector<Artist::pointer>& artists{ track->getArtists({ TrackArtistLinkType::Artist }) };
         if (!artists.empty())
@@ -117,7 +126,6 @@ namespace lms::api::subsonic
         {
             trackResponse.setAttribute("album", release->getName());
             trackResponse.setAttribute("albumId", idToString(release->getId()));
-            trackResponse.setAttribute("parent", idToString(release->getId()));
         }
 
         trackResponse.setAttribute("duration", std::chrono::duration_cast<std::chrono::seconds>(track->getDuration()).count());
@@ -126,7 +134,7 @@ namespace lms::api::subsonic
         trackResponse.setAttribute("created", core::stringUtils::toISO8601String(track->getLastWritten()));
         trackResponse.setAttribute("contentType", av::getMimeType(track->getAbsoluteFilePath().extension()));
 
-        if (const Wt::WDateTime dateTime{ core::Service<feedback::IFeedbackService>::get()->getStarredDateTime(user->getId(), track->getId()) }; dateTime.isValid())
+        if (const Wt::WDateTime dateTime{ core::Service<feedback::IFeedbackService>::get()->getStarredDateTime(context.user->getId(), track->getId()) }; dateTime.isValid())
             trackResponse.setAttribute("starred", core::stringUtils::toISO8601String(dateTime));
 
         // Report the first GENRE for this track
@@ -152,7 +160,7 @@ namespace lms::api::subsonic
         trackResponse.setAttribute("mediaType", "song");
 
         {
-            const Wt::WDateTime dateTime{ core::Service<scrobbling::IScrobblingService>::get()->getLastListenDateTime(user->getId(), track->getId()) };
+            const Wt::WDateTime dateTime{ core::Service<scrobbling::IScrobblingService>::get()->getLastListenDateTime(context.user->getId(), track->getId()) };
             trackResponse.setAttribute("played", dateTime.isValid() ? core::stringUtils::toISO8601String(dateTime) : "");
         }
 

src/libs/subsonic/impl/responses/Song.hpp

@@ -32,5 +32,7 @@ namespace lms::db
 
 namespace lms::api::subsonic
 {
-    Response::Node createSongNode(RequestContext& context, const db::ObjectPtr<db::Track>& track, const db::ObjectPtr<db::User>& user);
-}
+    class RequestContext;
+
+    Response::Node createSongNode(RequestContext& context, const db::ObjectPtr<db::Track>& track, bool id3);
+} // namespace lms::api::subsonic

src/libs/subsonic/impl/responses/User.cpp

@@ -19,13 +19,15 @@
 
 #include "responses/User.hpp"
 
+#include "database/MediaLibrary.hpp"
 #include "database/User.hpp"
 
+#include "RequestContext.hpp"
+#include "SubsonicId.hpp"
+
 namespace lms::api::subsonic
 {
-    using namespace db;
-
-    Response::Node createUserNode(const User::pointer& user)
+    Response::Node createUserNode(RequestContext& context, const db::User::pointer& user)
     {
         Response::Node userNode;
 
@@ -38,14 +40,15 @@ namespace lms::api::subsonic
         userNode.setAttribute("playlistRole", true);
         userNode.setAttribute("coverArtRole", false);
         userNode.setAttribute("commentRole", false);
-        userNode.setAttribute("podcastRole", false);
+        userNode.setAttribute("podcastRole", false); // not supported
         userNode.setAttribute("streamRole", true);
-        userNode.setAttribute("jukeboxRole", false);
-        userNode.setAttribute("shareRole", false);
+        userNode.setAttribute("jukeboxRole", false); // not supported
+        userNode.setAttribute("shareRole", false);   // not supported
 
-        Response::Node folder;
-        folder.setValue("0");
-        userNode.addArrayChild("folder", std::move(folder));
+        // users can access all libraries
+        db::MediaLibrary::find(context.dbSession, [&](const db::MediaLibrary::pointer& library) {
+            userNode.addArrayValue("folder", idToString(library->getId()));
+        });
 
         return userNode;
     }

src/libs/subsonic/impl/responses/User.hpp

@@ -30,5 +30,7 @@ namespace lms::db
 
 namespace lms::api::subsonic
 {
-    Response::Node createUserNode(const db::ObjectPtr<db::User>& user);
-}
+    class RequestContext;
+
+    Response::Node createUserNode(RequestContext& context, const db::ObjectPtr<db::User>& user);
+} // namespace lms::api::subsonic

src/lms/ui/admin/ScannerController.cpp

@@ -256,7 +256,7 @@ namespace lms::ui
 
             _status->setText(Wt::WString::tr("Lms.Admin.ScannerController.status-in-progress")
                                  .arg(status.currentScanStepStats->stepIndex + 1)
-                                 .arg(scanner::ScanProgressStepCount));
+                                 .arg(status.currentScanStepStats->stepCount));
 
             refreshCurrentStep(*status.currentScanStepStats);
             break;
@@ -326,6 +326,11 @@ namespace lms::ui
                                      .arg(stepStats.totalElems)
                                      .arg(stepStats.progress()));
             break;
+
+        case ScanStep::UpdateLibraryFields:
+            _stepStatus->setText(Wt::WString::tr("Lms.Admin.ScannerController.step-updating-library-fields")
+                                     .arg(stepStats.processedElems));
+            break;
         }
     }
 } // namespace lms::ui

src/lms/ui/common/LoginNameValidator.cpp

@@ -38,8 +38,8 @@ namespace lms::ui
     {
         auto v = std::make_unique<LengthValidator>();
         v->setMandatory(true);
-        v->setMinimumLength(db::User::MinNameLength);
-        v->setMaximumLength(db::User::MaxNameLength);
+        v->setMinimumLength(db::User::minNameLength);
+        v->setMaximumLength(db::User::maxNameLength);
         return v;
     }
 } // namespace lms::ui

src/lms/ui/explore/ReleaseView.cpp

@@ -321,7 +321,8 @@ namespace lms::ui
         const bool variousArtists{ release->hasVariousArtists() };
         const auto totalDisc{ release->getTotalDisc() };
         const std::size_t discCount{ release->getDiscCount() };
-        const bool isReleaseMultiDisc{ (discCount > 1) || (totalDisc && *totalDisc > 1) };
+        const bool hasDiscSubtitle{ release->hasDiscSubtitle() };
+        const bool useSubtitleContainers{ (discCount > 1) || (totalDisc && *totalDisc > 1) || hasDiscSubtitle };
 
         // Expect to be called in asc order
         std::map<std::size_t, Wt::WContainerWidget*> trackContainers;
@@ -392,8 +393,10 @@ namespace lms::ui
             const auto discNumber{ track->getDiscNumber() };
 
             Wt::WContainerWidget* container;
-            if (isReleaseMultiDisc && discNumber)
+            if (useSubtitleContainers && discNumber)
                 container = getOrAddDiscContainer(*discNumber, track->getDiscSubtitle());
+            else if (hasDiscSubtitle && !discNumber)
+                container = getOrAddDiscContainer(0, track->getDiscSubtitle());
             else
                 container = getOrAddNoDiscContainer();