Started to restore clusters based recommendation engine

src/tools/recommendation-features/LmsRecommendationFeatures.cpp

@@ -32,6 +32,7 @@
 #include "utils/Service.hpp"
 #include "utils/StreamLogger.hpp"
 #include "recommendation/IEngine.hpp"
+#include "recommendation/IClassifier.hpp"
 #include "recommendation/FeaturesClassifierCreator.hpp"
 
 int main(int argc, char *argv[])
@@ -50,11 +51,9 @@ int main(int argc, char *argv[])
 		Database::Db db {ServiceProvider<IConfig>::get()->getPath("working-dir") / "lms.db"};
 		Database::Session session {db};
 
-		auto classifier {Recommendation::createFeaturesClassifier()};
-
-		std::cout << "Classifying tracks..." << std::endl;
 		// may be long...
-		classifier->classify();
+		std::cout << "Classifying tracks..." << std::endl;
+		auto classifier {Recommendation::createFeaturesClassifier()};
 		std::cout << "Classifying tracks DONE" << std::endl;
 
 		const std::vector<Database::IdType> trackIds = std::invoke([&]()
@@ -106,7 +105,7 @@ int main(int argc, char *argv[])
 			};
 
 			std::cout << "Processing release '" << releaseToString(releaseId) << "'" << std::endl;
-			for (Database::IdType similarReleaseId : classifier->getSimilarReleases({releaseId}, 3))
+			for (Database::IdType similarReleaseId : classifier->getSimilarReleases(session, {releaseId}, 3))
 				std::cout << "\t- Similar release '" << releaseToString(similarReleaseId) << "'" << std::endl;
 		}
 
@@ -128,7 +127,7 @@ int main(int argc, char *argv[])
 			};
 
 			std::cout << "Processing artist '" << artistToString(artistId) << "'" << std::endl;
-			for (Database::IdType similarArtistId : classifier->getSimilarArtists({artistId}, 3))
+			for (Database::IdType similarArtistId : classifier->getSimilarArtists(session, {artistId}, 3))
 				std::cout << "\t- Similar artist '" << artistToString(similarArtistId) << "'" << std::endl;
 		}