Added compilation tag support, fixes #520

src/libs/database/impl/Migration.cpp

@@ -35,7 +35,7 @@ namespace lms::db
 {
     namespace
     {
-        static constexpr Version LMS_DATABASE_VERSION{ 65 };
+        static constexpr Version LMS_DATABASE_VERSION{ 66 };
     }
 
     VersionInfo::VersionInfo()
@@ -736,6 +736,14 @@ SELECT
         session.getDboSession()->execute("UPDATE scan_settings SET scan_version = scan_version + 1");
     }
 
+    void migrateFromV65(Session& session)
+    {
+        session.getDboSession()->execute("ALTER TABLE release ADD is_compilation BOOLEAN NOT NULL DEFAULT(false)");
+
+                // 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         static const std::string outdatedMsg{ "Outdated database, please rebuild it (delete the .db file and restart)" };
@@ -777,6 +785,7 @@ SELECT
             { 62, migrateFromV62 },
             { 63, migrateFromV63 },
             { 64, migrateFromV64 },
+            { 65, migrateFromV65 },
         };
 
         bool migrationPerformed{};

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

@@ -228,6 +228,7 @@ namespace lms::db
         std::chrono::milliseconds getDuration() const;
         Wt::WDateTime getLastWritten() const;
         std::string_view getArtistDisplayName() const { return _artistDisplayName; }
+        bool isCompilation() const { return _isCompilation; }
         std::size_t getTrackCount() const;
         std::vector<ObjectPtr<ReleaseType>> getReleaseTypes() const;
         std::vector<std::string> getLabelNames() const;
@@ -241,6 +242,7 @@ namespace lms::db
         void setGroupMBID(const std::optional<core::UUID>& mbid) { _groupMBID = mbid ? mbid->getAsString() : ""; }
         void setTotalDisc(std::optional<int> totalDisc) { _totalDisc = totalDisc; }
         void setArtistDisplayName(std::string_view name) { _artistDisplayName = name; }
+        void setCompilation(bool value) { _isCompilation = value; }
         void clearLabels();
         void clearReleaseTypes();
         void addLabel(ObjectPtr<Label> releaseType);
@@ -262,6 +264,7 @@ namespace lms::db
             Wt::Dbo::field(a, _groupMBID, "group_mbid");
             Wt::Dbo::field(a, _totalDisc, "total_disc");
             Wt::Dbo::field(a, _artistDisplayName, "artist_display_name");
+            Wt::Dbo::field(a, _isCompilation, "is_compilation");
             Wt::Dbo::hasMany(a, _tracks, Wt::Dbo::ManyToOne, "release");
 
             Wt::Dbo::hasMany(a, _labels, Wt::Dbo::ManyToMany, "release_label", "", Wt::Dbo::OnDeleteCascade);
@@ -284,6 +287,7 @@ namespace lms::db
         std::string _groupMBID;
         std::optional<int> _totalDisc{};
         std::string _artistDisplayName;
+        bool _isCompilation{}; // See https://picard-docs.musicbrainz.org/en/appendices/tag_mapping.html#compilation-itunes-5
 
         Wt::Dbo::collection<Wt::Dbo::ptr<Track>> _tracks;
         Wt::Dbo::collection<Wt::Dbo::ptr<Label>> _labels;

src/libs/database/test/Release.cpp

@@ -745,6 +745,26 @@ namespace lms::db::tests
         }
     }
 
+    TEST_F(DatabaseFixture, Release_isCompilation)
+    {
+        ScopedRelease release{ session, "MyRelease" };
+
+        {
+            auto transaction{ session.createReadTransaction() };
+            EXPECT_FALSE(release.get()->isCompilation());
+        }
+
+        {
+            auto transaction{ session.createWriteTransaction() };
+            release.get().modify()->setCompilation(true);
+        }
+
+        {
+            auto transaction{ session.createReadTransaction() };
+            EXPECT_TRUE(release.get()->isCompilation());
+        }
+    }
+
     TEST_F(DatabaseFixture, Label)
     {
         {