Added copyright info each track, fixes #793

src/libs/database/impl/objects/Release.cpp

@@ -642,13 +642,20 @@ namespace lms::db
         return *year;
     }
 
+    bool Release::hasVariousCopyrights() const
+    {
+        assert(session());
+
+        return utils::fetchQuerySingleResult(session()->query<int>("SELECT COUNT(DISTINCT copyright) FROM track t").where("t.release_id = ?").bind(getId())) > 1;
+    }
+
     std::optional<std::string> Release::getCopyright() const
     {
         assert(session());
 
         auto query{ session()->query<std::string>("SELECT copyright FROM track t INNER JOIN release r ON r.id = t.release_id").where("r.id = ?").groupBy("copyright").bind(getId()) };
 
-        const auto copyrights{ utils::fetchQueryResults(query) };
+        auto copyrights{ utils::fetchQueryResults(query) };
 
         // various copyrights => no copyright
         if (copyrights.empty() || copyrights.size() > 1 || copyrights.front().empty())
@@ -663,7 +670,7 @@ namespace lms::db
 
         const auto query{ session()->query<std::string>("SELECT copyright_url FROM track t INNER JOIN release r ON r.id = t.release_id").where("r.id = ?").bind(getId()).groupBy("copyright_url") };
 
-        const auto copyrights{ utils::fetchQueryResults(query) };
+        auto copyrights{ utils::fetchQueryResults(query) };
 
         // various copyright URLs => no copyright URL
         if (copyrights.empty() || copyrights.size() > 1 || copyrights.front().empty())

src/libs/database/impl/objects/Track.cpp

@@ -643,14 +643,14 @@ namespace lms::db
         return !_trackLyrics.empty();
     }
 
-    std::optional<std::string> Track::getCopyright() const
+    std::string_view Track::getCopyright() const
     {
-        return _copyright != "" ? std::make_optional<std::string>(_copyright) : std::nullopt;
+        return _copyright;
     }
 
-    std::optional<std::string> Track::getCopyrightURL() const
+    std::string_view Track::getCopyrightURL() const
     {
-        return _copyrightURL != "" ? std::make_optional<std::string>(_copyrightURL) : std::nullopt;
+        return _copyrightURL;
     }
 
     std::vector<Artist::pointer> Track::getArtists(core::EnumSet<TrackArtistLinkType> linkTypes) const

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

@@ -289,6 +289,7 @@ namespace lms::db
         std::optional<int> getYear() const;
         core::PartialDateTime getOriginalDate() const;
         std::optional<int> getOriginalYear() const;
+        bool hasVariousCopyrights() const;
         std::optional<std::string> getCopyright() const;
         std::optional<std::string> getCopyrightURL() const;
         std::size_t getMeanBitrate() const;

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

@@ -297,8 +297,8 @@ namespace lms::db
         bool hasLyrics() const;
         std::optional<core::UUID> getTrackMBID() const { return core::UUID::fromString(_trackMBID); }
         std::optional<core::UUID> getRecordingMBID() const { return core::UUID::fromString(_recordingMBID); }
-        std::optional<std::string> getCopyright() const;
-        std::optional<std::string> getCopyrightURL() const;
+        std::string_view getCopyright() const;
+        std::string_view getCopyrightURL() const;
         std::string_view getArtistDisplayName() const { return _artistDisplayName; }
         std::string_view getComment() const { return _comment; }
         Advisory getAdvisory() const { return _advisory; }