Reworked internal namespaces

src/libs/CMakeLists.txt

@@ -1,8 +1,8 @@
 add_subdirectory(av)
+add_subdirectory(core)
 add_subdirectory(database)
 add_subdirectory(image)
 add_subdirectory(metadata)
 add_subdirectory(services)
 add_subdirectory(som)
 add_subdirectory(subsonic)
-add_subdirectory(utils)

src/libs/av/CMakeLists.txt

@@ -18,7 +18,7 @@ target_include_directories(lmsav PRIVATE
 	)
 
 target_link_libraries(lmsav PUBLIC
-	lmsutils
+	lmscore
 	std::filesystem
 	)
 

src/libs/av/impl/AudioFile.cpp

@@ -31,10 +31,10 @@ extern "C"
 #include <map>
 #include <unordered_map>
 
-#include "utils/ILogger.hpp"
-#include "utils/String.hpp"
+#include "core/ILogger.hpp"
+#include "core/String.hpp"
 
-namespace Av
+namespace lms::av
 {
     namespace
     {
@@ -48,11 +48,11 @@ namespace Av
                 return "Unknown error";
         }
 
-        class AudioFileException : public Av::Exception
+        class AudioFileException : public Exception
         {
         public:
             AudioFileException(int avError)
-                : Av::Exception{ "AudioFileException: " + averror_to_string(avError) }
+                : Exception{ "AudioFileException: " + averror_to_string(avError) }
             {}
         };
 
@@ -64,7 +64,7 @@ namespace Av
             AVDictionaryEntry* tag = NULL;
             while ((tag = ::av_dict_get(dictionnary, "", tag, AV_DICT_IGNORE_SUFFIX)))
             {
-                res[StringUtils::stringToUpper(tag->key)] = tag->value;
+                res[core::stringUtils::stringToUpper(tag->key)] = tag->value;
             }
         }
 
@@ -320,10 +320,10 @@ namespace Av
             {".mka",    "audio/x-matroska"},
         };
 
-        auto it{ entries.find(StringUtils::stringToLower(fileExtension.string())) };
+        auto it{ entries.find(core::stringUtils::stringToLower(fileExtension.string())) };
         if (it == std::cend(entries))
             return "";
 
         return it->second;
     }
-} // namespace Av
+} // namespace lms::av

src/libs/av/impl/AudioFile.hpp

@@ -25,7 +25,7 @@
 
 struct AVFormatContext;
 
-namespace Av
+namespace lms::av
 {
 
     class AudioFile final : public IAudioFile
@@ -53,5 +53,5 @@ namespace Av
         AVFormatContext* _context{};
     };
 
-} // namespace Av
+} // namespace lms::av
 

src/libs/av/impl/RawResourceHandlerCreator.cpp

@@ -20,13 +20,13 @@
 #include "av/RawResourceHandlerCreator.hpp"
 
 #include "av/IAudioFile.hpp"
-#include "utils/FileResourceHandlerCreator.hpp"
+#include "core/FileResourceHandlerCreator.hpp"
 
-namespace Av
+namespace lms::av
 {
     std::unique_ptr<IResourceHandler> createRawResourceHandler(const std::filesystem::path& path)
     {
-        std::string_view mimeType{ Av::getMimeType(path.extension()) };
+        std::string_view mimeType{ getMimeType(path.extension()) };
         return createFileResourceHandler(path, mimeType.empty() ? "application/octet-stream" : mimeType);
     }
 }

src/libs/av/impl/Transcoder.cpp

@@ -22,13 +22,13 @@
 #include <atomic>
 #include <iomanip>
 
-#include "utils/IChildProcessManager.hpp"
-#include "utils/IConfig.hpp"
-#include "utils/Path.hpp"
-#include "utils/ILogger.hpp"
-#include "utils/Service.hpp"
+#include "core/IChildProcessManager.hpp"
+#include "core/IConfig.hpp"
+#include "core/Path.hpp"
+#include "core/ILogger.hpp"
+#include "core/Service.hpp"
 
-namespace Av::Transcoding
+namespace lms::av::transcoding
 {
 
 #define LOG(severity, message)	LMS_LOG(TRANSCODING, severity, "[" << _debugId << "] - " << message)
@@ -52,7 +52,7 @@ namespace Av::Transcoding
 
     void Transcoder::init()
     {
-        ffmpegPath = Service<IConfig>::get()->getPath("ffmpeg-file", "/usr/bin/ffmpeg");
+        ffmpegPath = core::Service<core::IConfig>::get()->getPath("ffmpeg-file", "/usr/bin/ffmpeg");
         if (!std::filesystem::exists(ffmpegPath))
             throw Exception{ "File '" + ffmpegPath.string() + "' does not exist!" };
     }
@@ -183,9 +183,9 @@ namespace Av::Transcoding
         // Caution: stdin must have been closed before
         try
         {
-            _childProcess = Service<IChildProcessManager>::get()->spawnChildProcess(ffmpegPath, args);
+            _childProcess = core::Service<core::IChildProcessManager>::get()->spawnChildProcess(ffmpegPath, args);
         }
-        catch (ChildProcessException& exception)
+        catch (core::ChildProcessException& exception)
         {
             throw Exception{ "Cannot execute '" + ffmpegPath.string() + "': " + exception.what() };
         }
@@ -195,7 +195,7 @@ namespace Av::Transcoding
     {
         assert(_childProcess);
 
-        return _childProcess->asyncRead(buffer, bufferSize, [readCallback{ std::move(readCallback) }](IChildProcess::ReadResult /*res*/, std::size_t nbBytesRead)
+        return _childProcess->asyncRead(buffer, bufferSize, [readCallback{ std::move(readCallback) }](core::IChildProcess::ReadResult /*res*/, std::size_t nbBytesRead)
             {
                 readCallback(nbBytesRead);
             });
@@ -215,4 +215,4 @@ namespace Av::Transcoding
         return _childProcess->finished();
     }
 
-} // namespace Av::Transcoding
+} // namespace lms::av::Transcoding

src/libs/av/impl/Transcoder.hpp

@@ -25,9 +25,12 @@
 #include "av/TranscodingParameters.hpp"
 #include "av/Types.hpp"
 
-class IChildProcess;
+namespace lms::core
+{
+    class IChildProcess;
+}
 
-namespace Av::Transcoding
+namespace lms::av::transcoding
 {
     class Transcoder
     {
@@ -60,7 +63,6 @@ namespace Av::Transcoding
         const OutputParameters      _outputParameters;
         std::string                 _outputMimeType;
 
-        std::unique_ptr<IChildProcess>  _childProcess;
+        std::unique_ptr<core::IChildProcess>  _childProcess;
     };
-
-} // namespace Av::Transcoding
+}

src/libs/av/impl/TranscodingResourceHandler.cpp

@@ -18,9 +18,9 @@
  */
 
 #include "TranscodingResourceHandler.hpp"
-#include "utils/ILogger.hpp"
+#include "core/ILogger.hpp"
 
-namespace Av::Transcoding
+namespace lms::av::transcoding
 {
     namespace
     {

src/libs/av/impl/TranscodingResourceHandler.hpp

@@ -24,10 +24,10 @@
 #include <optional>
 
 #include "av/TranscodingParameters.hpp"
-#include "utils/IResourceHandler.hpp"
+#include "core/IResourceHandler.hpp"
 #include "Transcoder.hpp"
 
-namespace Av::Transcoding
+namespace lms::av::transcoding
 {
     class TranscodingResourceHandler final : public IResourceHandler
     {

src/libs/av/include/av/IAudioFile.hpp

@@ -32,7 +32,7 @@
 
 #include "Types.hpp"
 
-namespace Av
+namespace lms::av
 {
     // List should be sync with the codecs shipped in the lms's docker version
     enum class DecodingCodec
@@ -107,5 +107,5 @@ namespace Av
 
     std::string_view getMimeType(const std::filesystem::path& fileExtension);
 
-} // namespace Av
+} // namespace lms::av
 

src/libs/av/include/av/RawResourceHandlerCreator.hpp

@@ -22,9 +22,9 @@
 #include <filesystem>
 #include <memory>
 
-#include "utils/IResourceHandler.hpp"
+#include "core/IResourceHandler.hpp"
 
-namespace Av
+namespace lms::av
 {
     std::unique_ptr<IResourceHandler> createRawResourceHandler(const std::filesystem::path& path);
 }

src/libs/av/include/av/TranscodingParameters.hpp

@@ -25,7 +25,7 @@
 
 #include "Types.hpp"
 
-namespace Av::Transcoding
+namespace lms::av::transcoding
 {
     struct InputParameters
     {
@@ -52,5 +52,5 @@ namespace Av::Transcoding
         std::chrono::milliseconds   offset{ 0 };
         bool                        stripMetadata{ true };
     };
-} // namespace Av::Transcoding
+} // namespace lms::av::Transcoding
 

src/libs/av/include/av/TranscodingResourceHandlerCreator.hpp

@@ -21,9 +21,9 @@
 
 #include <memory>
 
-#include "utils/IResourceHandler.hpp"
+#include "core/IResourceHandler.hpp"
 
-namespace Av::Transcoding
+namespace lms::av::transcoding
 {
 	struct InputParameters;
 	struct OutputParameters;

src/libs/av/include/av/Types.hpp

@@ -19,11 +19,11 @@
 
 #pragma once
 
-#include "utils/Exception.hpp"
+#include "core/Exception.hpp"
 
-namespace Av
+namespace lms::av
 {
-    class Exception : public LmsException
+    class Exception : public core::LmsException
     {
     public:
         using LmsException::LmsException;

src/libs/core/CMakeLists.txt

@@ -1,4 +1,4 @@
-add_library(lmsutils SHARED
+add_library(lmscore SHARED
 	impl/http/Client.cpp
 	impl/http/SendQueue.cpp
 	impl/ArchiveZipper.cpp
@@ -19,26 +19,26 @@ add_library(lmsutils SHARED
 	impl/WtLogger.cpp
 	)
 
-target_include_directories(lmsutils INTERFACE
+target_include_directories(lmscore INTERFACE
 	include
 	)
 
-target_include_directories(lmsutils PRIVATE
+target_include_directories(lmscore PRIVATE
 	include
 	)
 
-target_link_libraries(lmsutils PRIVATE
+target_link_libraries(lmscore PRIVATE
 	PkgConfig::Config++
 	PkgConfig::Archive
 	)
 
-target_link_libraries(lmsutils PUBLIC
+target_link_libraries(lmscore PUBLIC
 	Boost::system
 	std::filesystem
 	Wt::Wt
 	)
 
-install(TARGETS lmsutils DESTINATION ${CMAKE_INSTALL_LIBDIR})
+install(TARGETS lmscore DESTINATION lib ${CMAKE_INSTALL_LIBDIR})
 
 if(BUILD_TESTING)
 	add_subdirectory(test)

src/libs/core/bench/CMakeLists.txt

@@ -0,0 +1,9 @@
+
+add_executable(bench-core
+	TraceLoggerBench.cpp
+	)
+
+target_link_libraries(bench-core PRIVATE
+	lmscore
+	benchmark
+	)

src/libs/core/bench/TraceLoggerBench.cpp

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2024 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 <iostream>
+#include <thread>
+#include <benchmark/benchmark.h>
+
+#include "core/ILogger.hpp"
+#include "core/ITraceLogger.hpp"
+#include "core/StreamLogger.hpp"
+
+namespace lms::core
+{
+    // The trace logger is meant to built/destroyed once
+    Service<logging::ILogger> logger{ std::make_unique<logging::StreamLogger>(std::cout, logging::StreamLogger::allSeverities) };
+    Service<tracing::ITraceLogger> traceLogger{ tracing::createTraceLogger(tracing::Level::Overview) };
+
+    static void BM_TraceLogger_Overview(benchmark::State& state)
+    {
+        for (auto _ : state)
+        {
+            LMS_SCOPED_TRACE_OVERVIEW("Cat", "Test");
+        }
+    }
+
+    static void BM_TraceLogger_Detailed(benchmark::State& state)
+    {
+        for (auto _ : state)
+        {
+            // Should do nothing
+            LMS_SCOPED_TRACE_DETAILED("Cat", "Test");
+        }
+    }
+
+    BENCHMARK(BM_TraceLogger_Overview)->Threads(1)->Threads(std::thread::hardware_concurrency());
+    BENCHMARK(BM_TraceLogger_Detailed)->Threads(1)->Threads(std::thread::hardware_concurrency());
+}
+
+BENCHMARK_MAIN();

src/libs/core/impl/ArchiveZipper.cpp

@@ -0,0 +1,298 @@
+/*
+ * Copyright (C) 2020 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 "ArchiveZipper.hpp"
+
+#include <algorithm>
+#include <cassert>
+#include <cstring> // strerror
+#include <fstream>
+#include <archive.h>
+#include <archive_entry.h>
+
+#include "core/ILogger.hpp"
+
+namespace lms::zip
+{
+    std::unique_ptr<IZipper> createArchiveZipper(const EntryContainer& entries)
+    {
+        return std::make_unique<ArchiveZipper>(entries);
+    }
+
+    class FileException : public Exception
+    {
+    public:
+        FileException(const std::filesystem::path& p, std::string_view message)
+            : Exception{ "File '" + p.string() + "': " + std::string {message} }
+        {}
+
+        FileException(const std::filesystem::path& p, std::string_view message, int err)
+            : Exception{ "File '" + p.string() + "': " + std::string {message} + ": " + ::strerror(err) }
+        {}
+    };
+
+    class ArchiveException : public Exception
+    {
+    public:
+        ArchiveException(struct ::archive* arch)
+            : Exception{ getError(arch) }
+        {}
+
+        static std::string_view getError(struct ::archive* arch)
+        {
+            const char* str{ archive_error_string(arch) };
+            if (!str)
+            {
+                static std::string unknownError{ "Unknown archive error" };
+                return unknownError;
+            }
+
+            return str;
+        }
+    };
+
+    void ArchiveZipper::ArchiveDeleter::operator()(struct ::archive* arch)
+    {
+        const int res{ ::archive_write_free(arch) };
+        if (res != ARCHIVE_OK)
+            LMS_LOG(UTILS, ERROR, "Failure while freeing archive control struct: " << std::string{ ::strerror(res) });
+    }
+
+    void ArchiveZipper::ArchiveEntryDeleter::operator()(struct ::archive_entry* archEntry)
+    {
+        ::archive_entry_free(archEntry);
+    }
+
+    ArchiveZipper::ArchiveZipper(const EntryContainer& entries)
+        : _entries{ entries }
+        , _readBuffer(_readBufferSize, {})
+        , _currentEntry{ std::cbegin(_entries) }
+    {
+        _archive = ArchivePtr{ ::archive_write_new() };
+        if (!_archive)
+            throw Exception{ "Cannot create archive control struct" };
+
+        auto archiveOpen{ [](struct ::archive*, void*)
+        {
+            return ARCHIVE_OK;
+        } };
+
+        auto archiveWrite{ [](struct ::archive*, void* clientData, const void* buff, ::size_t n) -> la_ssize_t
+        {
+            ArchiveZipper* zipper {static_cast<ArchiveZipper*>(clientData)};
+            return zipper->onWriteCallback(static_cast<const std::byte*>(buff), n);
+        } };
+
+        auto archiveClose{ [](struct ::archive*, void*)
+        {
+            return ARCHIVE_OK;
+        } };
+
+        if (::archive_write_set_bytes_per_block(_archive.get(), _writeBlockSize) != ARCHIVE_OK)
+            throw ArchiveException{ _archive.get() };
+
+        // 1 => no padding for last block
+        if (::archive_write_set_bytes_in_last_block(_archive.get(), 1) != ARCHIVE_OK)
+            throw ArchiveException{ _archive.get() };
+
+        if (::archive_write_set_format_zip(_archive.get()) != ARCHIVE_OK)
+            throw ArchiveException{ _archive.get() };
+
+        if (::archive_write_set_option(_archive.get(), "zip", "compression", "deflate") != ARCHIVE_OK)
+            throw ArchiveException{ _archive.get() };
+
+        int res{ ::archive_write_open(_archive.get(), this, archiveOpen, archiveWrite, archiveClose) };
+        if (res != ARCHIVE_OK)
+            throw ArchiveException{ _archive.get() };
+    }
+
+    std::uint64_t ArchiveZipper::writeSome(std::ostream& output)
+    {
+        assert(!_currentOutputStream);
+
+        _currentOutputStream = &output;
+        _bytesWrittenInCurrentOutputStream = 0;
+
+        while (_bytesWrittenInCurrentOutputStream == 0)
+        {
+            if (!_currentArchiveEntry)
+            {
+                if (_currentEntry == std::cend(_entries))
+                {
+                    if (::archive_write_close(_archive.get()) != ARCHIVE_OK)
+                        throw ArchiveException{ _archive.get() };
+
+                    _archive.reset();
+                    break;
+                }
+
+                _currentArchiveEntry = createArchiveEntry(*_currentEntry);
+                _currentEntryOffset = 0;
+                if (::archive_write_header(_archive.get(), _currentArchiveEntry.get()) != ARCHIVE_OK)
+                    throw ArchiveException{ _archive.get() };
+            }
+
+            if (writeSomeCurrentFileData())
+            {
+                // entry complete
+                if (::archive_write_finish_entry(_archive.get()) != ARCHIVE_OK)
+                    throw ArchiveException{ _archive.get() };
+
+                _currentArchiveEntry.reset();
+                _currentEntry++;
+            }
+        }
+
+        _currentOutputStream = nullptr;
+        return _bytesWrittenInCurrentOutputStream;
+    }
+
+    bool ArchiveZipper::isComplete() const
+    {
+        return !_archive;
+    }
+
+    void ArchiveZipper::abort()
+    {
+        LMS_LOG(UTILS, DEBUG, "Aborting zip creation");
+        if (_archive)
+        {
+            ::archive_write_fail(_archive.get());
+            _archive.reset();
+        }
+    }
+
+    static ::mode_t permsToMode(const std::filesystem::perms p)
+    {
+        using std::filesystem::perms;
+        ::mode_t mode{};
+
+        auto testPerm{ [](perms p, perms permToTest)
+        {
+            return (p & permToTest) == permToTest;
+        } };
+
+        if (testPerm(p, perms::owner_read))
+            mode |= S_IRUSR;
+        if (testPerm(p, perms::owner_write))
+            mode |= S_IWUSR;
+        if (testPerm(p, perms::owner_exec))
+            mode |= S_IXUSR;
+        if (testPerm(p, perms::group_read))
+            mode |= S_IRGRP;
+        if (testPerm(p, perms::group_write))
+            mode |= S_IWGRP;
+        if (testPerm(p, perms::group_exec))
+            mode |= S_IXGRP;
+        if (testPerm(p, perms::others_read))
+            mode |= S_IROTH;
+        if (testPerm(p, perms::others_write))
+            mode |= S_IWOTH;
+        if (testPerm(p, perms::others_exec))
+            mode |= S_IXOTH;
+
+        return mode;
+    }
+
+    ArchiveZipper::ArchiveEntryPtr ArchiveZipper::createArchiveEntry(const Entry& entry)
+    {
+        try
+        {
+            if (!std::filesystem::is_regular_file(entry.filePath))
+                throw FileException{ entry.filePath, "not a regular file" };
+
+            ArchiveEntryPtr archiveEntry{ archive_entry_new() };
+            if (!archiveEntry)
+                throw Exception{ "Cannot create archive entry control struct" };
+
+            archive_entry_set_pathname(archiveEntry.get(), entry.fileName.c_str());
+            archive_entry_set_size(archiveEntry.get(), std::filesystem::file_size(entry.filePath));
+            archive_entry_set_mode(archiveEntry.get(), permsToMode(std::filesystem::status(entry.filePath).permissions()));
+            archive_entry_set_filetype(archiveEntry.get(), AE_IFREG);
+
+            return archiveEntry;
+        }
+        catch (const std::filesystem::filesystem_error& error)
+        {
+            throw FileException{ entry.filePath, error.what() };
+        }
+    }
+
+    bool ArchiveZipper::writeSomeCurrentFileData()
+    {
+        assert(_currentEntry != std::cend(_entries));
+
+        std::ifstream ifs{ _currentEntry->filePath.c_str(), std::ios_base::binary };
+        if (!ifs)
+            throw FileException{ _currentEntry->filePath, "cannot open file", errno };
+
+        ifs.seekg(0, std::ios::end);
+        const std::uint64_t fileSize{ static_cast<std::uint64_t>(ifs.tellg()) };
+        ifs.seekg(0, std::ios::beg);
+
+        // TODO: store file size?
+        if (fileSize < _currentEntryOffset)
+            throw FileException{ _currentEntry->filePath, "size changed?" };
+
+        const std::uint64_t bytesToRead{ std::min(fileSize - _currentEntryOffset, static_cast<std::uint64_t>(_readBufferSize)) };
+
+        // read from file
+        if (!ifs.seekg(_currentEntryOffset, std::ios::beg))
+            throw FileException{ _currentEntry->filePath, "seek failed", errno };
+
+        if (!ifs.read(reinterpret_cast<char*>(&_readBuffer[0]), bytesToRead))
+            throw FileException{ _currentEntry->filePath, "read failed", errno };
+
+        const std::uint64_t actualBytesRead{ static_cast<std::uint64_t>(ifs.gcount()) };
+
+        // write to archive
+        {
+            std::uint64_t remainingBytesToWrite{ actualBytesRead };
+            while (remainingBytesToWrite > 0)
+            {
+                const auto writtenBytes{ archive_write_data(_archive.get(), &_readBuffer[actualBytesRead - remainingBytesToWrite], remainingBytesToWrite) };
+                if (writtenBytes < 0)
+                    throw ArchiveException{ _archive.get() };
+
+                assert(static_cast<std::uint64_t>(writtenBytes) <= remainingBytesToWrite);
+                remainingBytesToWrite -= writtenBytes;
+            }
+        }
+
+        _currentEntryOffset += actualBytesRead;
+        return (_currentEntryOffset >= fileSize);
+    }
+
+    std::int64_t ArchiveZipper::onWriteCallback(const std::byte* buffer, std::size_t bufferSize)
+    {
+        if (!_currentOutputStream)
+        {
+            archive_set_error(_archive.get(), EIO, "IO error: operation cancelled");
+            return -1;
+        }
+
+        _currentOutputStream->write(reinterpret_cast<const char*>(buffer), bufferSize);
+        if (!*_currentOutputStream)
+            throw Exception{ "Failed to write " + std::to_string(bufferSize) + " bytes in final archive output!" };
+
+        _bytesWrittenInCurrentOutputStream += bufferSize;
+
+        return bufferSize;
+    }
+}

src/libs/core/impl/ArchiveZipper.hpp

@@ -0,0 +1,80 @@
+/*
+ * 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 <cstddef>
+#include <memory>
+#include "core/IZipper.hpp"
+
+extern "C"
+{
+    struct archive;
+    struct archive_entry;
+}
+
+namespace lms::zip
+{
+    class ArchiveZipper : public IZipper
+    {
+    public:
+        ArchiveZipper(const EntryContainer& files);
+        ArchiveZipper(const ArchiveZipper&) = delete;
+        ArchiveZipper& operator=(const ArchiveZipper&) = delete;
+
+    private:
+        std::uint64_t writeSome(std::ostream& output) override;
+        bool isComplete() const override;
+        void abort() override;
+
+        class ArchiveDeleter
+        {
+        public:
+            void operator()(struct ::archive* arch);
+        };
+        using ArchivePtr = std::unique_ptr<struct ::archive, ArchiveDeleter>;
+
+        class ArchiveEntryDeleter
+        {
+        public:
+            void operator()(struct ::archive_entry* archEntry);
+        };
+        using ArchiveEntryPtr = std::unique_ptr<struct ::archive_entry, ArchiveEntryDeleter>;
+
+        void prepareCurrentEntry();
+        static ArchiveEntryPtr createArchiveEntry(const Entry& entry);
+        bool writeSomeCurrentFileData();
+        std::int64_t onWriteCallback(const std::byte* buff, std::size_t size);
+
+        const EntryContainer _entries;
+        ArchivePtr _archive;
+
+        static inline constexpr std::size_t _writeBlockSize{ 65536 };
+        static inline constexpr std::size_t _readBufferSize{ 65536 };
+        std::vector<std::byte> _readBuffer;
+
+        EntryContainer::const_iterator _currentEntry;
+        ArchiveEntryPtr _currentArchiveEntry;
+
+        std::uint64_t _currentEntryOffset{};
+        std::ostream* _currentOutputStream{};
+        std::uint64_t _bytesWrittenInCurrentOutputStream{};
+    };
+
+}

src/libs/core/impl/ChildProcess.cpp

@@ -0,0 +1,209 @@
+/*
+ * Copyright (C) 2020 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 "ChildProcess.hpp"
+
+#include <cstring>
+#include <cerrno>
+#include <fcntl.h>
+#include <stdexcept>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <unistd.h>
+
+#include <algorithm>
+#include <iostream>
+#include <mutex>
+
+#include <boost/asio/read.hpp>
+#include <boost/asio/buffer.hpp>
+
+#include "core/Exception.hpp"
+#include "core/ILogger.hpp"
+
+namespace lms::core
+{
+    namespace
+    {
+        class SystemException : public ChildProcessException
+        {
+        public:
+            SystemException(int err, const std::string& errMsg)
+                : ChildProcessException{ errMsg + ": " + ::strerror(err) }
+            {}
+
+            SystemException(boost::system::error_code ec, const std::string& errMsg)
+                : ChildProcessException{ errMsg + ": " + ec.message() }
+            {}
+        };
+    }
+
+    ChildProcess::ChildProcess(boost::asio::io_context& ioContext, const std::filesystem::path& path, const Args& args)
+        : _ioContext{ ioContext }
+        , _childStdout{ _ioContext }
+
+    {
+        // make sure only one thread is executing this part of code
+        static std::mutex mutex;
+        std::unique_lock<std::mutex> lock{ mutex };
+
+        int pipe[2];
+
+        int res{ pipe2(pipe, O_NONBLOCK | O_CLOEXEC) };
+        if (res < 0)
+            throw SystemException{ errno, "pipe2 failed!" };
+
+        {
+#if defined(__linux__) && defined(F_SETPIPE_SZ)
+            // Just a hint here to prevent the writer from writing too many bytes ahead of the reader
+            constexpr std::size_t pipeSize{ 65536 * 4 };
+
+            if (fcntl(pipe[0], F_SETPIPE_SZ, pipeSize) == -1)
+                throw SystemException{ errno, "fcntl failed!" };
+            if (fcntl(pipe[1], F_SETPIPE_SZ, pipeSize) == -1)
+                throw SystemException{ errno, "fcntl failed!" };
+#endif
+        }
+
+        res = fork();
+        if (res == -1)
+            throw SystemException{ errno, "fork failed!" };
+
+        if (res == 0) // CHILD
+        {
+            close(pipe[0]);
+            close(STDIN_FILENO);
+            close(STDERR_FILENO);
+
+            // Replace stdout with pipe write
+            if (dup2(pipe[1], STDOUT_FILENO) == -1)
+                exit(-1);
+
+            std::vector<const char*> execArgs;
+            std::transform(std::cbegin(args), std::cend(args), std::back_inserter(execArgs), [](const std::string& arg) { return arg.c_str(); });
+            execArgs.push_back(nullptr);
+
+            res = execv(path.string().c_str(), (char* const*)&execArgs[0]);
+            if (res == -1)
+                exit(-1);
+        }
+        else // PARENT
+        {
+            close(pipe[1]);
+            {
+                boost::system::error_code assignError;
+                _childStdout.assign(pipe[0], assignError);
+                if (assignError)
+                    throw SystemException{ assignError, "fork failed!" };
+            }
+            _childPID = res;
+        }
+    }
+
+    ChildProcess::~ChildProcess()
+    {
+        LMS_LOG(CHILDPROCESS, DEBUG, "Closing child process...");
+        {
+            boost::system::error_code closeError;
+            _childStdout.close(closeError);
+            if (closeError)
+                LMS_LOG(CHILDPROCESS, ERROR, "Closed failed: " << closeError.message());
+        }
+
+        if (!_finished)
+            kill();
+
+        wait(true);
+    }
+
+    void ChildProcess::kill()
+    {
+        // process may already have finished
+        LMS_LOG(CHILDPROCESS, DEBUG, "Killing child process...");
+        if (::kill(_childPID, SIGKILL) == -1)
+            LMS_LOG(CHILDPROCESS, DEBUG, "Kill failed: " << ::strerror(errno));
+    }
+
+    bool ChildProcess::wait(bool block)
+    {
+        assert(!_waited);
+
+        int wstatus{};
+        const pid_t pid{ waitpid(_childPID, &wstatus, block ? 0 : WNOHANG) };
+
+        if (pid == -1)
+            throw SystemException{ errno, "waitpid failed!" };
+        else if (pid == 0)
+            return false;
+
+        if (WIFEXITED(wstatus))
+        {
+            _exitCode = WEXITSTATUS(wstatus);
+            LMS_LOG(CHILDPROCESS, DEBUG, "Exit code = " << *_exitCode);
+        }
+
+        _waited = true;
+        return true;
+    }
+
+    void ChildProcess::asyncRead(std::byte* data, std::size_t bufferSize, ReadCallback callback)
+    {
+        assert(!finished());
+
+        LMS_LOG(CHILDPROCESS, DEBUG, "Async read, bufferSize = " << bufferSize);
+
+        boost::asio::async_read(_childStdout, boost::asio::buffer(data, bufferSize),
+            [this, callback{ std::move(callback) }](const boost::system::error_code& error, std::size_t bytesTransferred)
+            {
+                LMS_LOG(CHILDPROCESS, DEBUG, "Async read cb - ec = '" << error.message() << "' (" << error.value() << "), bytesTransferred = " << bytesTransferred);
+
+                ReadResult readResult{ ReadResult::Success };
+                if (error)
+                {
+                    if (error != boost::asio::error::eof)
+                    {
+                        // forbidden to read any captured param here as the ChildProcess instance may already have been killed
+                        return;
+                    }
+
+                    readResult = ReadResult::EndOfFile;
+                    _finished = true;
+                }
+
+                callback(readResult, bytesTransferred);
+            });
+    }
+
+    std::size_t ChildProcess::readSome(std::byte* data, std::size_t bufferSize)
+    {
+        boost::system::error_code ec;
+        const std::size_t res{ _childStdout.read_some(boost::asio::buffer(data, bufferSize), ec) };
+        LMS_LOG(CHILDPROCESS, DEBUG, "read some " << res << " bytes, ec = " << ec.message());
+        if (ec)
+            _childStdout.close(ec);
+
+        return res;
+    }
+
+    bool ChildProcess::finished() const
+    {
+        return _finished;
+    }
+}

src/libs/core/impl/ChildProcess.hpp

@@ -29,29 +29,31 @@
 #include <boost/asio/io_context.hpp>
 #include <boost/asio/posix/stream_descriptor.hpp>
 
-#include "utils/IChildProcess.hpp"
+#include "core/IChildProcess.hpp"
 
-
-class ChildProcess : public IChildProcess
+namespace lms::core
 {
-	public:
-		~ChildProcess();
-		ChildProcess(boost::asio::io_context& ioContext, const std::filesystem::path& path, const Args& args);
+    class ChildProcess : public IChildProcess
+    {
+    public:
+        ~ChildProcess();
+        ChildProcess(boost::asio::io_context& ioContext, const std::filesystem::path& path, const Args& args);
 
-	private:
-		void		asyncRead(std::byte* data, std::size_t bufferSize, ReadCallback callback) override;
-		std::size_t	readSome(std::byte* data, std::size_t bufferSize) override;
-		bool		finished() const override;
+    private:
+        void		asyncRead(std::byte* data, std::size_t bufferSize, ReadCallback callback) override;
+        std::size_t	readSome(std::byte* data, std::size_t bufferSize) override;
+        bool		finished() const override;
 
-		void	kill();
-		bool	wait(bool block); // return true if waited
+        void	kill();
+        bool	wait(bool block); // return true if waited
 
-		using FileDescriptor = boost::asio::posix::stream_descriptor;
+        using FileDescriptor = boost::asio::posix::stream_descriptor;
 
-		boost::asio::io_context&	_ioContext;
-		FileDescriptor				_childStdout;
-		::pid_t						_childPID {};
-		bool						_waited {};
-		bool						_finished {};
-		std::optional<int>			_exitCode;
-};
+        boost::asio::io_context& _ioContext;
+        FileDescriptor				_childStdout;
+        ::pid_t						_childPID{};
+        bool						_waited{};
+        bool						_finished{};
+        std::optional<int>			_exitCode;
+    };
+}

src/libs/core/impl/ChildProcessManager.cpp

@@ -19,26 +19,26 @@
 
 #include "ChildProcessManager.hpp"
 
-#include "utils/ILogger.hpp"
+#include "core/ILogger.hpp"
 
 #include "ChildProcess.hpp"
 
-
-std::unique_ptr<IChildProcessManager>
-createChildProcessManager(boost::asio::io_context& ioContext)
+namespace lms::core
 {
-	return std::make_unique<ChildProcessManager>(ioContext);
-}
-
-ChildProcessManager::ChildProcessManager(boost::asio::io_context& ioContext)
-: _ioContext {ioContext}
-{
-}
-
-std::unique_ptr<IChildProcess>
-ChildProcessManager::spawnChildProcess(const std::filesystem::path& path, const IChildProcess::Args& args)
-{
-	return std::make_unique<ChildProcess>(_ioContext, path, args);
-}
+    std::unique_ptr<IChildProcessManager>
+        createChildProcessManager(boost::asio::io_context& ioContext)
+    {
+        return std::make_unique<ChildProcessManager>(ioContext);
+    }
 
+    ChildProcessManager::ChildProcessManager(boost::asio::io_context& ioContext)
+        : _ioContext{ ioContext }
+    {
+    }
 
+    std::unique_ptr<IChildProcess>
+        ChildProcessManager::spawnChildProcess(const std::filesystem::path& path, const IChildProcess::Args& args)
+    {
+        return std::make_unique<ChildProcess>(_ioContext, path, args);
+    }
+}

src/libs/core/impl/ChildProcessManager.hpp

@@ -24,23 +24,24 @@
 
 #include <boost/asio/io_context.hpp>
 
-#include "utils/IChildProcessManager.hpp"
+#include "core/IChildProcessManager.hpp"
 
-class ChildProcessManager : public IChildProcessManager
+namespace lms::core
 {
-	public:
-		ChildProcessManager(boost::asio::io_context& ioContext);
-		~ChildProcessManager() = default;
+    class ChildProcessManager : public IChildProcessManager
+    {
+    public:
+        ChildProcessManager(boost::asio::io_context& ioContext);
+        ~ChildProcessManager() = default;
 
-		ChildProcessManager(const ChildProcessManager&) = delete;
-		ChildProcessManager(ChildProcessManager&&) = delete;
-		ChildProcessManager& operator=(const ChildProcessManager&) = delete;
-		ChildProcessManager& operator=(ChildProcessManager&&) = delete;
-
-	private:
-		std::unique_ptr<IChildProcess> spawnChildProcess(const std::filesystem::path& path, const IChildProcess::Args& args) override;
-
-		boost::asio::io_context&	_ioContext;
-};
+        ChildProcessManager(const ChildProcessManager&) = delete;
+        ChildProcessManager(ChildProcessManager&&) = delete;
+        ChildProcessManager& operator=(const ChildProcessManager&) = delete;
+        ChildProcessManager& operator=(ChildProcessManager&&) = delete;
 
+    private:
+        std::unique_ptr<IChildProcess> spawnChildProcess(const std::filesystem::path& path, const IChildProcess::Args& args) override;
 
+        boost::asio::io_context& _ioContext;
+    };
+}

src/libs/core/impl/Config.cpp

@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2016 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 "Config.hpp"
+
+#include "core/Exception.hpp"
+#include "core/ILogger.hpp"
+
+namespace lms::core
+{
+    std::unique_ptr<IConfig> createConfig(const std::filesystem::path& p)
+    {
+        return std::make_unique<Config>(p);
+    }
+
+    Config::Config(const std::filesystem::path& p)
+    {
+        try
+        {
+            _config.readFile(p.string().c_str());
+        }
+        catch (libconfig::FileIOException& e)
+        {
+            throw LmsException{ "Cannot open config file '" + p.string() + "'" };
+        }
+        catch (libconfig::ParseException& e)
+        {
+            throw LmsException{ "Cannot parse config file '" + p.string() + "', line = " + std::to_string(e.getLine()) + ", error = '" + e.getError() + "'" };
+        }
+        catch (libconfig::ConfigException& e)
+        {
+            throw LmsException{ "Cannot open config file '" + p.string() + "': " + e.what() };
+        }
+    }
+
+    std::string_view Config::getString(std::string_view setting, std::string_view def)
+    {
+        try
+        {
+            return static_cast<const char*>(_config.lookup(std::string{ setting }));
+        }
+        catch (libconfig::ConfigException&)
+        {
+            return def;
+        }
+    }
+
+    void Config::visitStrings(std::string_view setting, std::function<void(std::string_view)> _func, std::initializer_list<std::string_view> defs)
+    {
+        try
+        {
+            const libconfig::Setting& values{ _config.lookup(std::string {setting}) };
+            for (int i{}; i < values.getLength(); ++i)
+                _func(static_cast<const char*>(values[i]));
+        }
+        catch (const libconfig::SettingNotFoundException&)
+        {
+            for (std::string_view def : defs)
+                _func(def);
+        }
+        catch (libconfig::ConfigException&)
+        {
+        }
+    }
+
+    std::filesystem::path Config::getPath(std::string_view setting, const std::filesystem::path& path)
+    {
+        try
+        {
+            const char* res{ _config.lookup(std::string {setting}) };
+            return std::filesystem::path{ std::string(res) };
+        }
+        catch (libconfig::ConfigException&)
+        {
+            return path;
+        }
+    }
+
+    unsigned long Config::getULong(std::string_view setting, unsigned long def)
+    {
+        try
+        {
+            return static_cast<unsigned int>(_config.lookup(std::string{ setting }));
+        }
+        catch (libconfig::ConfigException&)
+        {
+            return def;
+        }
+    }
+
+    long Config::getLong(std::string_view setting, long def)
+    {
+        try
+        {
+            return _config.lookup(std::string{ setting });
+        }
+        catch (libconfig::ConfigException&)
+        {
+            return def;
+        }
+    }
+
+    bool Config::getBool(std::string_view setting, bool def)
+    {
+        try
+        {
+            return _config.lookup(std::string{ setting });
+        }
+        catch (libconfig::ConfigException&)
+        {
+            return def;
+        }
+    }
+}

src/libs/core/impl/Config.hpp

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2016 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 "core/IConfig.hpp"
+
+#include <libconfig.h++>
+
+namespace lms::core
+{
+    // Used to get config values from configuration files
+    class Config final : public IConfig
+    {
+    public:
+        Config(const std::filesystem::path& p);
+        ~Config() = default;
+
+        Config(const Config&) = delete;
+        Config& operator=(const Config&) = delete;
+        Config(Config&&) = delete;
+        Config& operator=(Config&&) = delete;
+
+        // Default values are returned in case of setting not found
+        std::string_view		getString(std::string_view setting, std::string_view def = "") override;
+        void 					visitStrings(std::string_view setting, std::function<void(std::string_view)> _func, std::initializer_list<std::string_view> defs) override;
+        std::filesystem::path	getPath(std::string_view setting, const std::filesystem::path& def = std::filesystem::path()) override;
+        unsigned long	getULong(std::string_view setting, unsigned long def = 0) override;
+        long		getLong(std::string_view setting, long def = 0) override;
+        bool		getBool(std::string_view setting, bool def = false) override;
+
+    private:
+
+        libconfig::Config _config;
+    };
+}

src/libs/core/impl/FileResourceHandler.cpp

@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2020 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 "FileResourceHandler.hpp"
+
+#include <fstream>
+
+#include "core/ILogger.hpp"
+
+namespace lms
+{
+    std::unique_ptr<IResourceHandler> createFileResourceHandler(const std::filesystem::path& path, std::string_view mimeType)
+    {
+        return std::make_unique<FileResourceHandler>(path, mimeType);
+    }
+
+    FileResourceHandler::FileResourceHandler(const std::filesystem::path& path, std::string_view mimeType)
+        : _path{ path }
+        , _mimeType{ mimeType }
+    {
+    }
+
+    Wt::Http::ResponseContinuation* FileResourceHandler::processRequest(const Wt::Http::Request& request, Wt::Http::Response& response)
+    {
+        ::uint64_t startByte{ _offset };
+        std::ifstream ifs{ _path.string().c_str(), std::ios::in | std::ios::binary };
+
+        if (startByte == 0)
+        {
+            if (!ifs)
+            {
+                LMS_LOG(UTILS, ERROR, "Cannot open file stream for '" << _path.string() << "'");
+                response.setStatus(404);
+                return {};
+            }
+
+            ifs.seekg(0, std::ios::end);
+            const ::uint64_t fileSize{ static_cast<::uint64_t>(ifs.tellg()) };
+            ifs.seekg(0, std::ios::beg);
+
+            LMS_LOG(UTILS, DEBUG, "File '" << _path.string() << "', fileSize = " << fileSize);
+
+            response.addHeader("Accept-Ranges", "bytes");
+
+            const Wt::Http::Request::ByteRangeSpecifier ranges{ request.getRanges(fileSize) };
+            if (!ranges.isSatisfiable())
+            {
+                std::ostringstream contentRange;
+                contentRange << "bytes */" << fileSize;
+                response.setStatus(416); // Requested range not satisfiable
+                response.addHeader("Content-Range", contentRange.str());
+
+                LMS_LOG(UTILS, DEBUG, "Range not satisfiable");
+                return {};
+            }
+
+            if (ranges.size() == 1)
+            {
+                LMS_LOG(UTILS, DEBUG, "Range requested = " << ranges[0].firstByte() << "-" << ranges[0].lastByte());
+
+                response.setStatus(206);
+                startByte = ranges[0].firstByte();
+                _beyondLastByte = ranges[0].lastByte() + 1;
+
+                std::ostringstream contentRange;
+                contentRange << "bytes " << startByte << "-"
+                    << _beyondLastByte - 1 << "/" << fileSize;
+
+                response.addHeader("Content-Range", contentRange.str());
+                response.setContentLength(_beyondLastByte - startByte);
+            }
+            else
+            {
+                LMS_LOG(UTILS, DEBUG, "No range requested");
+
+                response.setStatus(200);
+                _beyondLastByte = fileSize;
+                response.setContentLength(_beyondLastByte);
+            }
+
+            LMS_LOG(UTILS, DEBUG, "Mimetype set to '" << _mimeType << "'");
+            response.setMimeType(_mimeType);
+        }
+        else if (!ifs)
+        {
+            LMS_LOG(UTILS, ERROR, "Cannot reopen file stream for '" << _path.string() << "'");
+            return {};
+        }
+
+        ifs.seekg(static_cast<std::istream::pos_type>(startByte));
+
+        std::vector<char> buf;
+        buf.resize(_chunkSize);
+
+        ::uint64_t restSize = _beyondLastByte - startByte;
+        ::uint64_t pieceSize = buf.size() > restSize ? restSize : buf.size();
+
+        ifs.read(&buf[0], pieceSize);
+        const ::uint64_t actualPieceSize{ static_cast<::uint64_t>(ifs.gcount()) };
+        if (actualPieceSize > 0)
+        {
+            response.out().write(&buf[0], actualPieceSize);
+            LMS_LOG(UTILS, DEBUG, "Written " << actualPieceSize << " bytes, range = " << startByte << "-" << startByte + actualPieceSize - 1 << "");
+        }
+        else
+        {
+            LMS_LOG(UTILS, DEBUG, "Written 0 byte");
+        }
+
+        if (ifs.good() && actualPieceSize < restSize)
+        {
+            _offset = startByte + actualPieceSize;
+            LMS_LOG(UTILS, DEBUG, "Job not complete! Remaining range: " << _offset << "-" << _beyondLastByte - 1);
+
+            return response.createContinuation();
+        }
+
+        LMS_LOG(UTILS, DEBUG, "Job complete!");
+        return nullptr;
+    }
+}

src/libs/core/impl/FileResourceHandler.hpp

@@ -22,22 +22,24 @@
 #include <filesystem>
 #include <string>
 #include <string_view>
-#include "utils/IResourceHandler.hpp"
+#include "core/IResourceHandler.hpp"
 
-class FileResourceHandler final : public IResourceHandler
+namespace lms
 {
-public:
-    FileResourceHandler(const std::filesystem::path& filePath, std::string_view mimeType);
+    class FileResourceHandler final : public IResourceHandler
+    {
+    public:
+        FileResourceHandler(const std::filesystem::path& filePath, std::string_view mimeType);
 
-private:
-    Wt::Http::ResponseContinuation* processRequest(const Wt::Http::Request& request, Wt::Http::Response& response) override;
-    void abort() override {};
+    private:
+        Wt::Http::ResponseContinuation* processRequest(const Wt::Http::Request& request, Wt::Http::Response& response) override;
+        void abort() override {};
 
-    static constexpr std::size_t _chunkSize{ 262'144 };
-
-    std::filesystem::path   _path;
-    std::string             _mimeType;
-    ::uint64_t              _beyondLastByte{};
-    ::uint64_t              _offset{};
-};
+        static constexpr std::size_t _chunkSize{ 262'144 };
 
+        std::filesystem::path   _path;
+        std::string             _mimeType;
+        ::uint64_t              _beyondLastByte{};
+        ::uint64_t              _offset{};
+    };
+}

src/libs/core/impl/IOContextRunner.cpp

@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2021 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 "core/IOContextRunner.hpp"
+
+#include <cstdlib>
+
+#include "core/ILogger.hpp"
+#include "core/ITraceLogger.hpp"
+
+namespace lms::core
+{
+    IOContextRunner::IOContextRunner(boost::asio::io_service& ioService, std::size_t threadCount, std::string_view name)
+        : _ioService{ ioService }
+        , _work{ ioService }
+    {
+        LMS_LOG(UTILS, INFO, "Starting IO context with " << threadCount << " threads...");
+
+        for (std::size_t i{}; i < threadCount; ++i)
+        {
+            std::string threadName{ name };
+            if (!threadName.empty())
+            {
+                threadName += "Thread_";
+                threadName += std::to_string(i);
+            }
+
+            _threads.emplace_back([this, threadName]
+                {
+                    if (!threadName.empty())
+                    {
+                        if (auto * traceLogger{ Service<tracing::ITraceLogger>::get() })
+                            traceLogger->setThreadName(std::this_thread::get_id(), threadName);
+                    }
+
+                    try
+                    {
+                        _ioService.run();
+                    }
+                    catch (const std::exception& e)
+                    {
+                        LMS_LOG(UTILS, FATAL, "Exception caught in IO context: " << e.what());
+                        std::abort();
+                    }
+                });
+        }
+    }
+
+    void IOContextRunner::stop()
+    {
+        LMS_LOG(UTILS, DEBUG, "Stopping IO context...");
+        _work.reset();
+        _ioService.stop();
+        LMS_LOG(UTILS, DEBUG, "IO context stopped!");
+    }
+
+    std::size_t IOContextRunner::getThreadCount() const
+    {
+        return _threads.size();
+    }
+
+    IOContextRunner::~IOContextRunner()
+    {
+        stop();
+
+        for (std::thread& t : _threads)
+            t.join();
+    }
+}

src/libs/core/impl/Logger.cpp

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2013 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 "core/ILogger.hpp"
+
+namespace lms::core::logging
+{
+    const char* getModuleName(Module mod)
+    {
+        switch (mod)
+        {
+        case Module::API_SUBSONIC:	return "API_SUBSONIC";
+        case Module::AUTH:			return "AUTH";
+        case Module::AV:			return "AV";
+        case Module::CHILDPROCESS:	return "CHILDPROC";
+        case Module::COVER:			return "COVER";
+        case Module::DB:			return "DB";
+        case Module::DBUPDATER:		return "DB UPDATER";
+        case Module::FEATURE:		return "FEATURE";
+        case Module::FEEDBACK:		return "FEEDBACK";
+        case Module::HTTP:			return "HTTP";
+        case Module::MAIN:			return "MAIN";
+        case Module::METADATA:		return "METADATA";
+        case Module::REMOTE:		return "REMOTE";
+        case Module::SCROBBLING:	return "SCROBBLING";
+        case Module::SERVICE:		return "SERVICE";
+        case Module::RECOMMENDATION:	return "RECOMMENDATION";
+        case Module::TRANSCODING:		return "TRANSCODING";
+        case Module::UI:			return "UI";
+        case Module::UTILS:			return "UTILS";
+        }
+        return "";
+    }
+
+    const char* getSeverityName(Severity sev)
+    {
+        switch (sev)
+        {
+        case Severity::FATAL:		return "fatal";
+        case Severity::ERROR:		return "error";
+        case Severity::WARNING:		return "warning";
+        case Severity::INFO:		return "info";
+        case Severity::DEBUG:		return "debug";
+        }
+        return "";
+    }
+
+    Log::Log(ILogger& logger, Module module, Severity severity)
+        : _logger{ logger }
+        , _module{ module }
+        , _severity{ severity }
+
+    {}
+
+    Log::~Log()
+    {
+        assert(_logger.isSeverityActive(_severity));
+        _logger.processLog(*this);
+    }
+
+    std::string Log::getMessage() const
+    {
+        return _oss.str();
+    }
+}

src/libs/core/impl/NetAddress.cpp

@@ -17,7 +17,7 @@
  * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "utils/NetAddress.hpp"
+#include "core/NetAddress.hpp"
 
 #ifndef BOOST_ASIO_HAS_STD_HASH
 

src/libs/core/impl/Path.cpp

@@ -17,7 +17,7 @@
  * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "utils/Path.hpp"
+#include "core/Path.hpp"
 
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -28,16 +28,16 @@
 
 #include <boost/tokenizer.hpp>
 
-#include "utils/Crc32Calculator.hpp"
-#include "utils/Exception.hpp"
-#include "utils/ILogger.hpp"
-#include "utils/String.hpp"
+#include "core/Crc32Calculator.hpp"
+#include "core/Exception.hpp"
+#include "core/ILogger.hpp"
+#include "core/String.hpp"
 
-namespace PathUtils
+namespace lms::core::pathUtils
 {
     std::uint32_t computeCrc32(const std::filesystem::path& p)
     {
-        Utils::Crc32Calculator crc32;
+        core::Crc32Calculator crc32;
 
         std::ifstream ifs{ p.string().c_str(), std::ios_base::binary };
         if (ifs)
@@ -134,7 +134,7 @@ namespace PathUtils
 
     bool hasFileAnyExtension(const std::filesystem::path& file, const std::vector<std::filesystem::path>& supportedExtensions)
     {
-        const std::filesystem::path extension{ StringUtils::stringToLower(file.extension().string()) };
+        const std::filesystem::path extension{ stringUtils::stringToLower(file.extension().string()) };
 
         return (std::find(std::cbegin(supportedExtensions), std::cend(supportedExtensions), extension) != std::cend(supportedExtensions));
     }
@@ -157,10 +157,10 @@ namespace PathUtils
 
             if (curPath == rootPath)
                 return true;
-            
+
             if (curPath == curPath.root_path())
                 break;
-            
+
             curPath = curPath.parent_path();
         }
 
@@ -183,4 +183,4 @@ namespace PathUtils
 
         return longestCommonPath;
     }
-} // ns PathUtils
+}

src/libs/core/impl/Random.cpp

@@ -17,22 +17,22 @@
  * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "utils/Random.hpp"
+#include "core/Random.hpp"
 
-namespace Random {
-
-RandGenerator& getRandGenerator()
+namespace lms::core::random
 {
-	static thread_local std::random_device rd;
-	static thread_local RandGenerator randGenerator(rd());
 
-	return randGenerator;
-}
+    RandGenerator& getRandGenerator()
+    {
+        static thread_local std::random_device rd;
+        static thread_local RandGenerator randGenerator(rd());
 
-RandGenerator createSeededGenerator(uint_fast32_t seed)
-{
-	return RandGenerator {seed};
-}
+        return randGenerator;
+    }
 
-} // Random
+    RandGenerator createSeededGenerator(uint_fast32_t seed)
+    {
+        return RandGenerator{ seed };
+    }
 
+}

src/libs/core/impl/RecursiveSharedMutex.cpp

@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2021 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 "core/RecursiveSharedMutex.hpp"
+
+#include <cassert>
+
+namespace lms::core
+{
+    void RecursiveSharedMutex::lock()
+    {
+        const auto thisThreadId{ std::this_thread::get_id() };
+
+        if (_uniqueOwner == thisThreadId)
+        {
+            // already locked
+            _uniqueCount++;
+        }
+        else
+        {
+            _mutex.lock();
+            _uniqueOwner = thisThreadId;
+            assert(_uniqueCount == 0);
+            _uniqueCount = 1;
+        }
+    }
+
+    void RecursiveSharedMutex::unlock()
+    {
+        assert(_uniqueCount > 0);
+
+        if (--_uniqueCount == 0)
+        {
+            _uniqueOwner = {};
+            _mutex.unlock();
+        }
+    }
+
+    void RecursiveSharedMutex::lock_shared()
+    {
+        const auto thisThreadId{ std::this_thread::get_id() };
+
+        if (_uniqueOwner == thisThreadId)
+        {
+            // alone here, no need to lock
+            _sharedCounts[thisThreadId]++;
+
+            return;
+        }
+
+        bool needLock{};
+
+        {
+            std::scoped_lock lock{ _sharedCountMutex };
+
+            auto& sharedCount{ _sharedCounts[thisThreadId] };
+            if (sharedCount == 0)
+                needLock = true;
+            else
+                ++sharedCount;
+        }
+
+        if (needLock)
+        {
+            _mutex.lock_shared();
+
+            assert(_uniqueOwner == std::thread::id{});
+
+            std::scoped_lock lock{ _sharedCountMutex };
+            _sharedCounts[thisThreadId]++;
+        }
+    }
+
+    void RecursiveSharedMutex::unlock_shared()
+    {
+        const auto thisThreadId{ std::this_thread::get_id() };
+
+        if (_uniqueOwner == thisThreadId)
+        {
+            // alone here, no need to lock
+            auto& sharedCount{ _sharedCounts[thisThreadId] };
+            assert(sharedCount > 0);
+            --sharedCount;
+
+            return;
+        }
+
+        bool needUnlock{};
+
+        {
+            std::scoped_lock lock{ _sharedCountMutex };
+
+            auto& sharedCount{ _sharedCounts[thisThreadId] };
+            assert(sharedCount > 0);
+            needUnlock = (--sharedCount == 0);
+        }
+
+        if (needUnlock)
+            _mutex.unlock_shared();
+    }
+
+#ifndef NDEBUG
+    bool RecursiveSharedMutex::isUniqueLocked()
+    {
+        return _uniqueOwner == std::this_thread::get_id();
+    }
+
+    bool RecursiveSharedMutex::isSharedLocked()
+    {
+        const auto thisThreadId{ std::this_thread::get_id() };
+        if (_uniqueOwner == thisThreadId)
+            return true;
+
+        std::scoped_lock lock{ _sharedCountMutex };
+        return _sharedCounts[thisThreadId] > 0;
+    }
+#endif
+}

src/libs/core/impl/StreamLogger.cpp

@@ -20,17 +20,19 @@
 #include <cassert>
 #include <thread>
 
-#include "utils/StreamLogger.hpp"
+#include "core/StreamLogger.hpp"
 
-StreamLogger::StreamLogger(std::ostream& os, EnumSet<Severity> severities)
-    : _os{ os }
-    , _severities{ severities }
+namespace lms::core::logging
 {
-}
-
-void StreamLogger::processLog(const Log& log)
-{
-    assert(isSeverityActive(log.getSeverity()));
-    _os << std::this_thread::get_id() << " [" << getSeverityName(log.getSeverity()) << "] [" << getModuleName(log.getModule()) << "] " << log.getMessage() << std::endl;
-}
+    StreamLogger::StreamLogger(std::ostream& os, EnumSet<Severity> severities)
+        : _os{ os }
+        , _severities{ severities }
+    {
+    }
 
+    void StreamLogger::processLog(const Log& log)
+    {
+        assert(isSeverityActive(log.getSeverity()));
+        _os << std::this_thread::get_id() << " [" << getSeverityName(log.getSeverity()) << "] [" << getModuleName(log.getModule()) << "] " << log.getMessage() << std::endl;
+    }
+}

src/libs/core/impl/String.cpp

@@ -17,7 +17,7 @@
  * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "utils/String.hpp"
+#include "core/String.hpp"
 
 #include <algorithm>
 #include <iomanip>
@@ -26,9 +26,8 @@
 #include <Wt/WDateTime.h>
 #include <Wt/WDate.h>
 
-namespace StringUtils
+namespace lms::core::stringUtils
 {
-
     namespace details
     {
         constexpr std::pair<char, std::string_view> jsEscapeChars[]
@@ -437,5 +436,4 @@ namespace StringUtils
         // assume UTC
         return date.toString("yyyy-MM-dd").toUTF8();
     }
-} // StringUtils
-
+}

src/libs/core/impl/TraceLogger.cpp

@@ -22,10 +22,10 @@
 #include <iomanip>
 #include <memory>
 #include <string>
-#include "utils/Exception.hpp"
-#include "utils/ILogger.hpp"
+#include "core/Exception.hpp"
+#include "core/ILogger.hpp"
 
-namespace tracing
+namespace lms::core::tracing
 {
     namespace
     {

src/libs/core/impl/TraceLogger.hpp

@@ -26,9 +26,9 @@
 #include <thread>
 #include <unordered_map>
 
-#include "utils/ITraceLogger.hpp"
+#include "core/ITraceLogger.hpp"
 
-namespace tracing
+namespace lms::core::tracing
 {
     class TraceLogger : public ITraceLogger
     {

src/libs/core/impl/UUID.cpp

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2020 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 "core/UUID.hpp"
+
+#include <cassert>
+#include <iomanip>
+#include <regex>
+#include <sstream>
+
+#include "core/Random.hpp"
+#include "core/String.hpp"
+
+namespace lms::core
+{
+    namespace stringUtils
+    {
+        template <>
+        std::optional<UUID>
+            readAs(std::string_view str)
+        {
+            return UUID::fromString(str);
+        }
+    }
+    namespace
+    {
+        bool stringIsUUID(std::string_view str)
+        {
+            static const std::regex re{ R"([0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12})" };
+
+            return std::regex_match(std::cbegin(str), std::cend(str), re);
+        }
+    }
+
+    UUID::UUID(std::string_view str)
+        : _value{ stringUtils::stringToLower(str) }
+    {
+    }
+
+    std::optional<UUID> UUID::fromString(std::string_view str)
+    {
+        if (!stringIsUUID(str))
+            return std::nullopt;
+
+        return UUID{ str };
+    }
+
+    UUID UUID::generate()
+    {
+        // Form is "123e4567-e89b-12d3-a456-426614174000"
+        // TODO: store 128 bits and only convert to string when necessary
+
+        std::ostringstream oss;
+
+        auto concatRandomBytes{ [](std::ostream& os, std::size_t byteCount)
+        {
+            for (std::size_t i {}; i < byteCount; ++i)
+                os << std::hex << std::setfill('0') << std::setw(2) << static_cast<int>(random::getRandom<std::uint8_t>(0, 255));
+        } };
+
+        concatRandomBytes(oss, 4);
+        oss << "-";
+        concatRandomBytes(oss, 2);
+        oss << "-";
+        concatRandomBytes(oss, 2);
+        oss << "-";
+        concatRandomBytes(oss, 2);
+        oss << "-";
+        concatRandomBytes(oss, 6);
+
+        const auto uuid{ fromString(oss.str()) };
+        assert(uuid);
+        return uuid.value();
+    }
+}

src/libs/core/impl/WtLogger.cpp

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2019 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 "core/WtLogger.hpp"
+
+#include <thread>
+#include <sstream>
+#include <Wt/WServer.h>
+#include <Wt/WLogger.h>
+
+#include "core/Exception.hpp"
+
+namespace lms::core::logging
+{
+    namespace
+    {
+        std::string to_string(std::thread::id id)
+        {
+            std::ostringstream oss;
+            oss << id;
+            return oss.str();
+        }
+    }
+
+    WtLogger::WtLogger(Severity minSeverity)
+        : _minSeverity{ minSeverity }
+    {
+    }
+
+    std::string WtLogger::computeLogConfig(Severity minSeverity)
+    {
+        switch (minSeverity)
+        {
+        case Severity::DEBUG:       return "*";
+        case Severity::INFO:        return "* -debug";
+        case Severity::WARNING:     return "* -debug -info";
+        case Severity::ERROR:       return "* -debug -info -warning";
+        case Severity::FATAL:       return "* -debug -info -warning -error";
+        }
+
+        throw LmsException{ "Unhandled severity" };
+    }
+
+    bool WtLogger::isSeverityActive(Severity severity) const
+    {
+        return static_cast<int>(severity) <= static_cast<int>(_minSeverity);
+    }
+
+    void WtLogger::processLog(const Log& log)
+    {
+        Wt::log(getSeverityName(log.getSeverity())) << Wt::WLogger::sep << to_string(std::this_thread::get_id()) << Wt::WLogger::sep << "[" << getModuleName(log.getModule()) << "]" << Wt::WLogger::sep << log.getMessage();
+    }
+}

src/libs/core/impl/http/Client.cpp

@@ -18,26 +18,22 @@
  */
 
 #include "Client.hpp"
-#include "utils/Exception.hpp"
+#include "core/Exception.hpp"
 
-namespace Http
+namespace lms::core::http
 {
-	std::unique_ptr<IClient>
-	createClient(boost::asio::io_context& ioContext, std::string_view baseUrl)
-	{
-		return std::make_unique<Client>(ioContext, baseUrl);
-	}
+    std::unique_ptr<IClient> createClient(boost::asio::io_context& ioContext, std::string_view baseUrl)
+    {
+        return std::make_unique<Client>(ioContext, baseUrl);
+    }
 
-	void
-	Client::sendGETRequest(ClientGETRequestParameters&& GETParams)
-	{
-		_sendQueue.sendRequest(std::make_unique<ClientRequest>(std::move(GETParams)));
-	}
-
-	void
-	Client::sendPOSTRequest(ClientPOSTRequestParameters&& POSTParams)
-	{
-		_sendQueue.sendRequest(std::make_unique<ClientRequest>(std::move(POSTParams)));
-	}
-} // namespace Http
+    void Client::sendGETRequest(ClientGETRequestParameters&& GETParams)
+    {
+        _sendQueue.sendRequest(std::make_unique<ClientRequest>(std::move(GETParams)));
+    }
 
+    void Client::sendPOSTRequest(ClientPOSTRequestParameters&& POSTParams)
+    {
+        _sendQueue.sendRequest(std::make_unique<ClientRequest>(std::move(POSTParams)));
+    }
+}

src/libs/core/impl/http/Client.hpp

@@ -23,23 +23,22 @@
 #include <string>
 #include <shared_mutex>
 
-#include "utils/http/IClient.hpp"
+#include "core/http/IClient.hpp"
 #include "SendQueue.hpp"
 
-namespace Http
+namespace lms::core::http
 {
-	class Client final : public IClient
-	{
-		public:
-			Client(boost::asio::io_context& ioContext, std::string_view baseUrl)
-			: _sendQueue {ioContext, baseUrl}
-			{}
+    class Client final : public IClient
+    {
+    public:
+        Client(boost::asio::io_context& ioContext, std::string_view baseUrl)
+            : _sendQueue{ ioContext, baseUrl }
+        {}
 
-		private:
-			void sendGETRequest(ClientGETRequestParameters&& request) override;
-			void sendPOSTRequest(ClientPOSTRequestParameters&& request) override;
-
-			SendQueue					_sendQueue;
-	};
-} // namespace Http
+    private:
+        void sendGETRequest(ClientGETRequestParameters&& request) override;
+        void sendPOSTRequest(ClientPOSTRequestParameters&& request) override;
 
+        SendQueue _sendQueue;
+    };
+}

src/libs/core/impl/http/ClientRequest.hpp

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2021 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 <memory>
+#include <variant>
+#include "core/http/ClientRequestParameters.hpp"
+
+namespace lms::core::http
+{
+    class ClientRequest
+    {
+    public:
+        ClientRequest(ClientGETRequestParameters&& GETParams) : _parameters{ std::move(GETParams) } {}
+        ClientRequest(ClientPOSTRequestParameters&& POSTParams) : _parameters{ std::move(POSTParams) } {}
+
+        std::size_t retryCount{};
+
+        const ClientRequestParameters& getParameters() const
+        {
+            const ClientRequestParameters* res;
+
+            std::visit([&](const auto& parameters)
+                {
+                    res = &static_cast<const ClientRequestParameters&>(parameters);
+                }, _parameters);
+
+            return *res;
+        }
+
+
+        enum class Type
+        {
+            GET,
+            POST
+        };
+        Type getType() const
+        {
+            if (std::holds_alternative<ClientGETRequestParameters>(_parameters))
+                return Type::GET;
+            else
+                return Type::POST;
+        }
+
+        const ClientGETRequestParameters& getGETParameters() const
+        {
+            return std::get<ClientGETRequestParameters>(_parameters);
+        }
+
+        const ClientPOSTRequestParameters& getPOSTParameters() const
+        {
+            return std::get<ClientPOSTRequestParameters>(_parameters);
+        }
+
+    private:
+        std::variant<ClientGETRequestParameters, ClientPOSTRequestParameters> _parameters;
+    };
+}

src/libs/core/impl/http/SendQueue.cpp

@@ -0,0 +1,240 @@
+/*
+ * Copyright (C) 2021 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 "SendQueue.hpp"
+
+#include <boost/asio/dispatch.hpp>
+#include <boost/asio/bind_executor.hpp>
+
+#include "core/Exception.hpp"
+#include "core/ILogger.hpp"
+#include "core/ITraceLogger.hpp"
+#include "core/String.hpp"
+
+#define LOG(sev, message)	LMS_LOG(SCROBBLING, sev, "[Http SendQueue] - " << message)
+
+namespace lms::core::stringUtils
+{
+    template<>
+    std::optional<std::chrono::seconds> readAs(std::string_view str)
+    {
+        std::optional<std::chrono::seconds> res;
+
+        if (const std::optional<std::size_t> value{ readAs<std::size_t>(str) })
+            res = std::chrono::seconds{ *value };
+
+        return res;
+    }
+}
+
+namespace lms::core::http
+{
+    namespace
+    {
+        template <typename T>
+        std::optional<T> headerReadAs(const Wt::Http::Message& msg, std::string_view headerName)
+        {
+            std::optional<T> res;
+
+            if (const std::string * headerValue{ msg.getHeader(std::string {headerName}) })
+                res = stringUtils::readAs<T>(*headerValue);
+
+            return res;
+        }
+    }
+
+    SendQueue::SendQueue(boost::asio::io_context& ioContext, std::string_view baseUrl)
+        : _ioContext{ ioContext }
+        , _baseUrl{ baseUrl }
+    {
+        _client.done().connect([this](Wt::AsioWrapper::error_code ec, const Wt::Http::Message& msg)
+            {
+                _strand.dispatch([this, ec, msg = std::move(msg)]
+                    {
+                        onClientDone(ec, msg);
+                    });
+            });
+    }
+
+    SendQueue::~SendQueue()
+    {
+        _client.abort();
+    }
+
+    void SendQueue::sendRequest(std::unique_ptr<ClientRequest> request)
+    {
+        boost::asio::dispatch(_strand, [this, request = std::move(request)]() mutable
+            {
+                _sendQueue[request->getParameters().priority].emplace_back(std::move(request));
+
+                if (_state == State::Idle)
+                    sendNextQueuedRequest();
+            });
+    }
+
+    void SendQueue::sendNextQueuedRequest()
+    {
+        assert(_state == State::Idle);
+        assert(!_currentRequest);
+
+        for (auto& [prio, requests] : _sendQueue)
+        {
+            LOG(DEBUG, "Processing prio " << static_cast<int>(prio) << ", request count = " << requests.size());
+            while (!requests.empty())
+            {
+                std::unique_ptr<ClientRequest> request{ std::move(requests.front()) };
+                requests.pop_front();
+
+                if (!sendRequest(*request))
+                    continue;
+
+                _state = State::Sending;
+                _currentRequest = std::move(request);
+                return;
+            }
+        }
+    }
+
+    bool SendQueue::sendRequest(const ClientRequest& request)
+    {
+        LMS_SCOPED_TRACE_DETAILED("SendQueue", "SendRequest");
+
+        std::string url{ _baseUrl + request.getParameters().relativeUrl };
+        LOG(DEBUG, "Sending request to url '" << url << "'");
+
+        bool res{};
+        switch (request.getType())
+        {
+        case ClientRequest::Type::GET:
+            res = _client.get(url, request.getGETParameters().headers);
+            break;
+
+        case ClientRequest::Type::POST:
+            res = _client.post(url, request.getPOSTParameters().message);
+            break;
+        }
+
+        if (!res)
+            LOG(ERROR, "Send failed, bad url or unsupported scheme?");
+
+        return res;
+    }
+
+    void SendQueue::onClientDone(Wt::AsioWrapper::error_code ec, const Wt::Http::Message& msg)
+    {
+        LMS_SCOPED_TRACE_DETAILED("SendQueue", "OnClientDone");
+
+        if (ec == boost::asio::error::operation_aborted)
+        {
+            LOG(DEBUG, "Client aborted");
+            return;
+        }
+
+        assert(_currentRequest);
+        _state = State::Idle;
+
+        LOG(DEBUG, "Client done. status = " << msg.status());
+        if (ec)
+            onClientDoneError(std::move(_currentRequest), ec);
+        else
+            onClientDoneSuccess(std::move(_currentRequest), msg);
+    }
+
+    void SendQueue::onClientDoneError(std::unique_ptr<ClientRequest> request, Wt::AsioWrapper::error_code ec)
+    {
+        LOG(ERROR, "Retry " << request->retryCount << ", client error: '" << ec.message() << "'");
+
+        // may be a network error, try again later
+        throttle(_defaultRetryWaitDuration);
+
+        if (request->retryCount++ < _maxRetryCount)
+        {
+            _sendQueue[request->getParameters().priority].emplace_front(std::move(request));
+        }
+        else
+        {
+            LOG(ERROR, "Too many retries, giving up operation and throttle");
+            if (request->getParameters().onFailureFunc)
+                request->getParameters().onFailureFunc();
+        }
+    }
+
+    void SendQueue::onClientDoneSuccess(std::unique_ptr<ClientRequest> request, const Wt::Http::Message& msg)
+    {
+        const ClientRequestParameters& requestParameters{ request->getParameters() };
+        bool mustThrottle{};
+        if (msg.status() == 429)
+        {
+            _sendQueue[requestParameters.priority].emplace_front(std::move(request));
+            mustThrottle = true;
+        }
+
+        const auto remainingCount{ headerReadAs<std::size_t>(msg, "X-RateLimit-Remaining") };
+        LOG(DEBUG, "Remaining messages = " << (remainingCount ? *remainingCount : 0));
+        if (mustThrottle || (remainingCount && *remainingCount == 0))
+        {
+            const auto waitDuration{ headerReadAs<std::chrono::seconds>(msg, "X-RateLimit-Reset-In") };
+            throttle(waitDuration.value_or(_defaultRetryWaitDuration));
+        }
+
+        if (!mustThrottle)
+        {
+            if (msg.status() == 200)
+            {
+                if (requestParameters.onSuccessFunc)
+                    requestParameters.onSuccessFunc(msg.body());
+            }
+            else
+            {
+                LOG(ERROR, "Send error: '" << msg.body() << "'");
+                if (requestParameters.onFailureFunc)
+                    requestParameters.onFailureFunc();
+            }
+        }
+
+        if (_state == State::Idle)
+            sendNextQueuedRequest();
+    }
+
+    void SendQueue::throttle(std::chrono::seconds requestedDuration)
+    {
+        assert(_state == State::Idle);
+
+        const std::chrono::seconds duration{ clamp(requestedDuration, _minRetryWaitDuration, _maxRetryWaitDuration) };
+        LOG(DEBUG, "Throttling for " << duration.count() << " seconds");
+
+        _throttleTimer.expires_after(duration);
+        _throttleTimer.async_wait([this](const boost::system::error_code& ec)
+            {
+                if (ec == boost::asio::error::operation_aborted)
+                {
+                    LOG(DEBUG, "Throttle aborted");
+                    return;
+                }
+                else if (ec)
+                {
+                    throw LmsException{ "Throttle timer failure: " + std::string {ec.message()} };
+                }
+
+                _state = State::Idle;
+                sendNextQueuedRequest();
+            });
+        _state = State::Throttled;
+    }
+}

src/libs/core/impl/http/SendQueue.hpp

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2021 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 <deque>
+#include <vector>
+#include <string_view>
+
+#include <boost/asio/io_context.hpp>
+#include <boost/asio/io_context_strand.hpp>
+#include <boost/asio/steady_timer.hpp>
+
+#include <Wt/Http/Client.h>
+#include "ClientRequest.hpp"
+
+namespace lms::core::http
+{
+    class SendQueue
+    {
+    public:
+        SendQueue(boost::asio::io_context& ioContext, std::string_view baseUrl);
+        ~SendQueue();
+
+        SendQueue(const SendQueue&) = delete;
+        SendQueue(const SendQueue&&) = delete;
+        SendQueue& operator=(const SendQueue&) = delete;
+        SendQueue& operator=(const SendQueue&&) = delete;
+
+        void sendRequest(std::unique_ptr<ClientRequest> request);
+
+    private:
+        void sendNextQueuedRequest();
+        bool sendRequest(const ClientRequest& request);
+        void onClientDone(Wt::AsioWrapper::error_code ec, const Wt::Http::Message& msg);
+        void onClientDoneError(std::unique_ptr<ClientRequest> request, Wt::AsioWrapper::error_code ec);
+        void onClientDoneSuccess(std::unique_ptr<ClientRequest> request, const Wt::Http::Message& msg);
+        void throttle(std::chrono::seconds duration);
+
+        const std::size_t			_maxRetryCount{ 2 };
+        const std::chrono::seconds	_defaultRetryWaitDuration{ 30 };
+        const std::chrono::seconds	_minRetryWaitDuration{ 1 };
+        const std::chrono::seconds	_maxRetryWaitDuration{ 300 };
+
+        boost::asio::io_context& _ioContext;
+        boost::asio::io_context::strand	_strand{ _ioContext };
+        boost::asio::steady_timer		_throttleTimer{ _ioContext };
+        std::string						_baseUrl;
+
+        enum class State
+        {
+            Idle,
+            Throttled,
+            Sending,
+        };
+        State								_state{ State::Idle };
+        Wt::Http::Client					_client{ _ioContext };
+        std::map<ClientRequestParameters::Priority, std::deque<std::unique_ptr<ClientRequest>>> _sendQueue;
+        std::unique_ptr<ClientRequest>		_currentRequest;
+    };
+
+}

src/libs/core/include/core/Crc32Calculator.hpp

@@ -21,27 +21,23 @@
 
 #include <boost/crc.hpp>  // for boost::crc_32_type
 
-namespace Utils
+namespace lms::core
 {
+    class Crc32Calculator
+    {
+    public:
+        void processBytes(const std::byte* _data, std::size_t dataSize)
+        {
+            _result.process_bytes(_data, dataSize);
+        }
 
-	class Crc32Calculator
-	{
-		public:
-
-			void processBytes(const std::byte* _data, std::size_t dataSize)
-			{
-				_result.process_bytes(_data, dataSize);
-			}
-
-			std::uint32_t getResult() const
-			{
-				return _result.checksum();
-			}
-
-		private:
-			using Crc32Type = boost::crc_32_type;
-			Crc32Type _result;
-	};
+        std::uint32_t getResult() const
+        {
+            return _result.checksum();
+        }
 
+    private:
+        using Crc32Type = boost::crc_32_type;
+        Crc32Type _result;
+    };
 }
-

src/libs/core/include/core/EnumSet.hpp

@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2020 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 <cassert>
+#include <cstdint>
+#include <initializer_list>
+#include <limits>
+#include <type_traits>
+
+namespace lms::core
+{
+    template <typename T, typename underlying_type = std::uint32_t>
+    class EnumSet
+    {
+        static_assert(std::is_enum<T>::value);
+        static_assert(std::is_same<underlying_type, std::uint64_t>::value || std::is_same<underlying_type, std::uint32_t>::value);
+
+        using IndexType = std::uint_fast8_t;
+
+    public:
+        using ValueType = underlying_type;
+
+        EnumSet() = default;
+        constexpr EnumSet(std::initializer_list<T> values)
+        {
+            for (T value : values)
+                insert(value);
+        }
+
+        template <typename It>
+        constexpr EnumSet(It begin, It end)
+        {
+            assign(begin, end);
+        }
+
+        template <typename It>
+        constexpr void assign(It begin, It end)
+        {
+            clear();
+            for (It it{ begin }; it != end; ++it)
+                insert(*it);
+        }
+
+        constexpr void insert(T value)
+        {
+            assert(static_cast<std::size_t>(value) < sizeof(_bitfield) * 8);
+            _bitfield |= (underlying_type{ 1 } << static_cast<underlying_type>(value));
+        }
+
+        constexpr void erase(T value)
+        {
+            assert(static_cast<std::size_t>(value) < sizeof(_bitfield) * 8);
+            _bitfield &= ~(underlying_type{ 1 } << static_cast<underlying_type>(value));
+        }
+
+        constexpr bool empty() const
+        {
+            return _bitfield == 0;
+        }
+
+        constexpr bool contains(T value) const
+        {
+            assert(static_cast<std::size_t>(value) < sizeof(_bitfield) * 8);
+            return _bitfield & (underlying_type{ 1 } << static_cast<underlying_type>(value));
+        }
+
+        constexpr void clear()
+        {
+            _bitfield = 0;
+        }
+
+        class iterator
+        {
+        public:
+            using value_type = T;
+
+            constexpr value_type operator*() const
+            {
+                return static_cast<value_type>(_index);
+            }
+
+            constexpr bool operator==(const iterator& _other) const
+            {
+                return &_container == &_other._container && _index == _other._index;
+            }
+
+            constexpr bool operator!=(const iterator& _other) const
+            {
+                return !(*this == _other);
+            }
+
+            constexpr iterator& operator++()
+            {
+                _index = _container.getFirstBitSetIndex(_index + 1);
+                return *this;
+            }
+
+        private:
+            friend class EnumSet;
+
+            constexpr iterator(const EnumSet& _container, IndexType _index)
+                : _container{ _container }
+                , _index{ _index }
+            {
+            }
+
+            const EnumSet& _container;
+            IndexType _index;
+        };
+
+        constexpr iterator begin() const
+        {
+            return iterator{ *this, getFirstBitSetIndex() };
+        }
+
+        constexpr iterator end() const
+        {
+            return iterator{ *this, npos };
+        }
+
+        constexpr underlying_type getBitfield() const
+        {
+            return _bitfield;
+        }
+
+        constexpr void setBitfield(underlying_type bitfield)
+        {
+            _bitfield = bitfield;
+        }
+
+        constexpr bool operator==(const EnumSet other) const
+        {
+            return _bitfield == other._bitfield;
+        }
+
+        constexpr bool operator!=(const EnumSet other) const
+        {
+            return _bitfield != other._bitfield;
+        }
+
+    private:
+        static_assert(std::numeric_limits<IndexType>::max() >= sizeof(underlying_type) * 8);
+        enum : IndexType { npos = sizeof(underlying_type) * 8 };
+
+        constexpr IndexType getFirstBitSetIndex(IndexType start = {}) const
+        {
+            assert(start < npos);
+
+            // return npos if no bit found
+            IndexType res{ countTrailingZero(_bitfield >> start) };
+            if (res == npos)
+                return res;
+
+            return res + start;
+        }
+
+        static constexpr IndexType countTrailingZero(underlying_type bitField)
+        {
+            IndexType res{};
+
+            while (res < (sizeof(underlying_type) * 8) && (bitField & 1) == 0)
+            {
+                ++res;
+                bitField >>= 1;
+            }
+
+            if (res == sizeof(underlying_type) * 8)
+                res = npos;
+
+            return res;
+        }
+
+        underlying_type _bitfield{};
+    };
+}

src/libs/core/include/core/Exception.hpp

@@ -23,9 +23,12 @@
 #include <string>
 #include <string_view>
 
-class LmsException : public std::runtime_error
+namespace lms::core
 {
-	public:
-		LmsException(std::string_view error = "") : std::runtime_error {std::string {error}} {}
-};
-
+    // TODO, rename to Exception
+    class LmsException : public std::runtime_error
+    {
+    public:
+        LmsException(std::string_view error = "") : std::runtime_error{ std::string{ error } } {}
+    };
+}

src/libs/core/include/core/FileResourceHandlerCreator.hpp

@@ -23,7 +23,9 @@
 #include <memory>
 #include <string_view>
 
-#include "utils/IResourceHandler.hpp"
-
-std::unique_ptr<IResourceHandler> createFileResourceHandler(const std::filesystem::path& path, std::string_view mimeType);
+#include "core/IResourceHandler.hpp"
 
+namespace lms
+{
+    std::unique_ptr<IResourceHandler> createFileResourceHandler(const std::filesystem::path& path, std::string_view mimeType);
+}

src/libs/core/include/core/IChildProcess.hpp

@@ -23,32 +23,34 @@
 #include <string>
 #include <vector>
 
-#include "utils/Exception.hpp"
+#include "core/Exception.hpp"
 
-class ChildProcessException : public LmsException
+namespace lms::core
 {
-	public:
-		using LmsException::LmsException;
-};
+    class ChildProcessException : public LmsException
+    {
+    public:
+        using LmsException::LmsException;
+    };
 
-class IChildProcess
-{
-	public:
-		using Args = std::vector<std::string>;
+    class IChildProcess
+    {
+    public:
+        using Args = std::vector<std::string>;
 
-		virtual ~IChildProcess() = default;
+        virtual ~IChildProcess() = default;
 
-		enum class ReadResult
-		{
-			Success,
-			Error,
-			EndOfFile,
-		};
+        enum class ReadResult
+        {
+            Success,
+            Error,
+            EndOfFile,
+        };
 
-		using ReadCallback = std::function<void(ReadResult, std::size_t)>;
-		virtual void		asyncRead(std::byte* data, std::size_t bufferSize, ReadCallback callback) = 0;
-
-		virtual std::size_t	readSome(std::byte* data, std::size_t bufferSize) = 0;
-		virtual bool		finished() const = 0;
-};
+        using ReadCallback = std::function<void(ReadResult, std::size_t)>;
+        virtual void		asyncRead(std::byte* data, std::size_t bufferSize, ReadCallback callback) = 0;
 
+        virtual std::size_t	readSome(std::byte* data, std::size_t bufferSize) = 0;
+        virtual bool		finished() const = 0;
+    };
+}

src/libs/core/include/core/IChildProcessManager.hpp

@@ -24,14 +24,15 @@
 
 #include "IChildProcess.hpp"
 
-class IChildProcessManager
+namespace lms::core
 {
-	public:
-		virtual ~IChildProcessManager() = default;
-
-		virtual std::unique_ptr<IChildProcess> spawnChildProcess(const std::filesystem::path& path, const IChildProcess::Args& args) = 0;
-};
-
-std::unique_ptr<IChildProcessManager> createChildProcessManager(boost::asio::io_service& ioService);
+    class IChildProcessManager
+    {
+    public:
+        virtual ~IChildProcessManager() = default;
 
+        virtual std::unique_ptr<IChildProcess> spawnChildProcess(const std::filesystem::path& path, const IChildProcess::Args& args) = 0;
+    };
 
+    std::unique_ptr<IChildProcessManager> createChildProcessManager(boost::asio::io_service& ioService);
+}

src/libs/core/include/core/IConfig.hpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2016 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 <filesystem>
+#include <functional>
+#include <string_view>
+
+namespace lms::core
+{
+    // Used to get config values from configuration files
+    class IConfig
+    {
+    public:
+        virtual ~IConfig() = default;
+
+        // Default values are returned in case of setting not found
+        virtual std::string_view		getString(std::string_view setting, std::string_view def = "") = 0;
+        virtual void					visitStrings(std::string_view setting, std::function<void(std::string_view)> _func, std::initializer_list<std::string_view> def = {}) = 0;
+        virtual std::filesystem::path	getPath(std::string_view setting, const std::filesystem::path& def = std::filesystem::path()) = 0;
+        virtual unsigned long			getULong(std::string_view setting, unsigned long def = 0) = 0;
+        virtual long					getLong(std::string_view setting, long def = 0) = 0;
+        virtual bool					getBool(std::string_view setting, bool def = false) = 0;
+    };
+
+    std::unique_ptr<IConfig> createConfig(const std::filesystem::path& p);
+}

src/libs/core/include/core/ILogger.hpp

@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2013 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 <string>
+#include <sstream>
+
+#include "core/String.hpp"
+#include "Service.hpp"
+
+namespace lms::core::logging
+{
+    enum class Severity
+    {
+        FATAL,
+        ERROR,
+        WARNING,
+        INFO,
+        DEBUG,
+    };
+
+    enum class Module
+    {
+        API_SUBSONIC,
+        AUTH,
+        AV,
+        CHILDPROCESS,
+        COVER,
+        DB,
+        DBUPDATER,
+        FEATURE,
+        FEEDBACK,
+        HTTP,
+        MAIN,
+        METADATA,
+        REMOTE,
+        SCROBBLING,
+        SERVICE,
+        RECOMMENDATION,
+        TRANSCODING,
+        UI,
+        UTILS,
+    };
+
+    const char* getModuleName(Module mod);
+    const char* getSeverityName(Severity sev);
+
+    class ILogger;
+    class Log
+    {
+    public:
+        Log(ILogger& logger, Module module, Severity severity);
+        ~Log();
+
+        Module getModule() const { return _module; }
+        Severity getSeverity() const { return _severity; }
+        std::string getMessage() const;
+
+        std::ostringstream& getOstream() { return _oss; }
+
+    private:
+        Log(const Log&) = delete;
+        Log& operator=(const Log&) = delete;
+
+        ILogger& _logger;
+        Module _module;
+        Severity _severity;
+        std::ostringstream _oss;
+    };
+
+    class ILogger
+    {
+    public:
+        virtual ~ILogger() = default;
+
+        virtual bool isSeverityActive(Severity severity) const = 0;
+        virtual void processLog(const Log& log) = 0;
+    };
+}
+
+#define LMS_LOG(module, severity, message) \
+    do \
+    { \
+        if (auto* logger_ {::lms::core::Service<::lms::core::logging::ILogger>::get()}; logger_ && logger_->isSeverityActive(::lms::core::logging::Severity::severity)) \
+            ::lms::core::logging::Log{ *logger_, ::lms::core::logging::Module::module, ::lms::core::logging::Severity::severity }.getOstream() << message; \
+    } while(0)

src/libs/core/include/core/IOContextRunner.hpp

@@ -23,20 +23,23 @@
 #include <thread>
 #include <boost/asio/io_service.hpp>
 
-class IOContextRunner
+namespace lms::core
 {
-public:
-    IOContextRunner(boost::asio::io_service& ioService, std::size_t threadCount, std::string_view name);
-    ~IOContextRunner();
+    class IOContextRunner
+    {
+    public:
+        IOContextRunner(boost::asio::io_service& ioService, std::size_t threadCount, std::string_view name);
+        ~IOContextRunner();
 
-    void stop();
-    std::size_t getThreadCount() const;
+        void stop();
+        std::size_t getThreadCount() const;
 
-private:
-    IOContextRunner(const IOContextRunner&) = delete;
-    IOContextRunner& operator=(const IOContextRunner&) = delete;
+    private:
+        IOContextRunner(const IOContextRunner&) = delete;
+        IOContextRunner& operator=(const IOContextRunner&) = delete;
 
-    boost::asio::io_service& _ioService;
-    std::optional<boost::asio::io_service::work>    _work;
-    std::vector<std::thread>                        _threads;
-};
+        boost::asio::io_service& _ioService;
+        std::optional<boost::asio::io_service::work>    _work;
+        std::vector<std::thread>                        _threads;
+    };
+}

src/libs/core/include/core/IResourceHandler.hpp

@@ -22,13 +22,16 @@
 #include <Wt/Http/Request.h>
 #include <Wt/Http/Response.h>
 
-// Helper class to serve a resource (must be saved as continuation data if not complete)
-class IResourceHandler
+// TODO, move elsewhere
+namespace lms
 {
+	// Helper class to serve a resource (must be saved as continuation data if not complete)
+	class IResourceHandler
+	{
 	public:
 		virtual ~IResourceHandler() = default;
 
 		[[nodiscard]] virtual Wt::Http::ResponseContinuation* processRequest(const Wt::Http::Request& request, Wt::Http::Response& response) = 0;
 		virtual void abort() = 0;
-};
-
+	};
+}

src/libs/core/include/core/ITraceLogger.hpp

@@ -34,16 +34,16 @@
 #define LMS_CONCAT(x, y) LMS_CONCAT_IMPL(x, y)
 
 #if LMS_SUPPORT_TRACING 
-#define LMS_SCOPED_TRACE(CATEGORY, LEVEL, NAME) ::tracing::ScopedTrace LMS_CONCAT(ScopedTrace_, __LINE__){ CATEGORY, LEVEL, NAME }
+#define LMS_SCOPED_TRACE(CATEGORY, LEVEL, NAME) ::lms::core::tracing::ScopedTrace LMS_CONCAT(ScopedTrace_, __LINE__){ CATEGORY, LEVEL, NAME }
 
 #else
 #define LMS_SCOPED_TRACE(CATEGORY, LEVEL, NAME)      (void)0
 #endif
 
-#define LMS_SCOPED_TRACE_OVERVIEW(CATEGORY, NAME)   LMS_SCOPED_TRACE(CATEGORY, ::tracing::Level::Overview, NAME)
-#define LMS_SCOPED_TRACE_DETAILED(CATEGORY, NAME)   LMS_SCOPED_TRACE(CATEGORY, ::tracing::Level::Detailed, NAME)
+#define LMS_SCOPED_TRACE_OVERVIEW(CATEGORY, NAME)   LMS_SCOPED_TRACE(CATEGORY, ::lms::core::tracing::Level::Overview, NAME)
+#define LMS_SCOPED_TRACE_DETAILED(CATEGORY, NAME)   LMS_SCOPED_TRACE(CATEGORY, ::lms::core::tracing::Level::Detailed, NAME)
 
-namespace tracing
+namespace lms::core::tracing
 {
     using clock = std::chrono::steady_clock;
 

src/libs/core/include/core/IZipper.hpp

@@ -25,30 +25,30 @@
 
 #include "Exception.hpp"
 
-namespace Zip
+ // TODO, move elsewhere?
+namespace lms::zip
 {
-	struct Entry
-	{
-		std::string fileName;
-		std::filesystem::path filePath;
-	};
-	using EntryContainer = std::vector<Entry>;
+    struct Entry
+    {
+        std::string fileName;
+        std::filesystem::path filePath;
+    };
+    using EntryContainer = std::vector<Entry>;
 
-	class Exception : public LmsException
-	{
-		using LmsException::LmsException;
-	};
+    class Exception : public core::LmsException
+    {
+        using core::LmsException::LmsException;
+    };
 
-	class IZipper
-	{
-		public:
-			virtual ~IZipper() = default;
+    class IZipper
+    {
+    public:
+        virtual ~IZipper() = default;
 
-			virtual std::uint64_t writeSome(std::ostream& output) = 0;
-			virtual bool isComplete() const = 0;
-			virtual void abort() = 0;
-	};
-
-	std::unique_ptr<IZipper> createArchiveZipper(const EntryContainer& entries);
-} // namespace Zip
+        virtual std::uint64_t writeSome(std::ostream& output) = 0;
+        virtual bool isComplete() const = 0;
+        virtual void abort() = 0;
+    };
 
+    std::unique_ptr<IZipper> createArchiveZipper(const EntryContainer& entries);
+}

src/libs/core/include/core/LiteralString.hpp

@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2024 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 <cstddef>
+#include <string>
+#include <string_view>
+
+namespace lms::core
+{
+    class LiteralString
+    {
+    public:
+        constexpr LiteralString() noexcept = default;
+        template<std::size_t N>
+        constexpr LiteralString(const char(&str)[N]) noexcept : _str{ str, N - 1 } { static_assert(N > 0); }
+
+        constexpr const char* c_str() const noexcept { return _str.data(); }
+        constexpr std::size_t length() const noexcept { return _str.length(); }
+        constexpr std::string_view str() const noexcept { return _str; }
+        constexpr auto operator<=>(const LiteralString& other) const = default;
+
+    private:
+        std::string_view _str;
+    };
+}
+
+namespace std
+{
+    template<>
+    struct hash<lms::core::LiteralString>
+    {
+        size_t operator()(const lms::core::LiteralString& str) const
+        {
+            return hash<std::string_view>{}(str.str());
+        }
+    };
+}
+
+namespace lms::core
+{
+    struct LiteralStringHash
+    {
+        using hash_type = std::hash<std::string_view>;
+        using is_transparent = void;
+
+        [[nodiscard]] size_t operator()(const LiteralString& str) const {
+            return hash_type{}(str.str());
+        }
+
+        [[nodiscard]] size_t operator()(std::string_view str) const {
+            return hash_type{}(str);
+        }
+
+        [[nodiscard]] size_t operator()(const std::string& str) const {
+            return hash_type{}(str);
+        }
+    };
+
+    struct LiteralStringEqual
+    {
+        using is_transparent = void;
+
+        [[nodiscard]] bool operator()(const LiteralString& lhs, const LiteralString& rhs) const {
+            return lhs == rhs;
+        }
+
+        [[nodiscard]] bool operator()(const LiteralString& lhs, const std::string& rhs) const {
+            return lhs.str() == rhs;
+        }
+
+        [[nodiscard]] bool operator()(const LiteralString& lhs, std::string_view rhs) const {
+            return lhs.str() == rhs;
+        }
+
+        [[nodiscard]] bool operator()(const std::string_view& lhs, LiteralString rhs) const {
+            return lhs == rhs.str();
+        }
+
+        [[nodiscard]] bool operator()(const std::string& lhs, const LiteralString& rhs) const {
+            return lhs == rhs.str();
+        }
+    };
+}

src/libs/core/include/core/Path.hpp

@@ -26,7 +26,7 @@
 
 #include <Wt/WDateTime.h>
 
-namespace PathUtils
+namespace lms::core::pathUtils
 {
     std::uint32_t computeCrc32(const std::filesystem::path& p);
 
@@ -60,7 +60,7 @@ namespace PathUtils
         longestCommonPath = *first++;
 
         while (first != last)
-            longestCommonPath = PathUtils::getLongestCommonPath(*first++, longestCommonPath);
+            longestCommonPath = core::pathUtils::getLongestCommonPath(*first++, longestCommonPath);
 
         return longestCommonPath;
     }

src/libs/core/include/core/Random.hpp

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2020 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 <algorithm>
+#include <random>
+
+namespace lms::core::random
+{
+    using RandGenerator = std::mt19937;
+    RandGenerator& getRandGenerator();
+
+    RandGenerator createSeededGenerator(uint_fast32_t seed);
+
+    template <typename T>
+    T getRandom(T min, T max)
+    {
+        std::uniform_int_distribution<> dist{ min, max };
+        return dist(getRandGenerator());
+    }
+
+    template <typename T>
+    T getRealRandom(T min, T max)
+    {
+        std::uniform_real_distribution<> dist{ min, max };
+        return dist(getRandGenerator());
+    }
+
+    template <typename Container>
+    void shuffleContainer(Container& container)
+    {
+        std::shuffle(std::begin(container), std::end(container), getRandGenerator());
+    }
+
+    template <typename Container>
+    typename Container::const_iterator pickRandom(const Container& container)
+    {
+        if (container.empty())
+            return std::end(container);
+
+        return std::next(std::begin(container), getRandom(0, static_cast<int>(container.size() - 1)));
+    }
+}

src/libs/core/include/core/RecursiveSharedMutex.hpp

@@ -24,26 +24,28 @@
 #include <thread>
 #include <unordered_map>
 
-// API compatible with shared_mutex
-class RecursiveSharedMutex
+namespace lms::core
 {
-	public:
-		void lock();
-		void unlock();
+    // API compatible with shared_mutex
+    class RecursiveSharedMutex
+    {
+    public:
+        void lock();
+        void unlock();
 
-		void lock_shared();
-		void unlock_shared();
+        void lock_shared();
+        void unlock_shared();
 
 #ifndef NDEBUG
-		bool isSharedLocked();
-		bool isUniqueLocked();
+        bool isSharedLocked();
+        bool isUniqueLocked();
 #endif // NDEBUG
-	private:
-		std::shared_mutex _mutex;
-		std::thread::id _uniqueOwner;
-		std::size_t _uniqueCount{};
-
-		std::mutex _sharedCountMutex;
-		std::unordered_map<std::thread::id, std::size_t> _sharedCounts;
-};
+    private:
+        std::shared_mutex _mutex;
+        std::thread::id _uniqueOwner;
+        std::size_t _uniqueCount{};
 
+        std::mutex _sharedCountMutex;
+        std::unordered_map<std::thread::id, std::size_t> _sharedCounts;
+    };
+}

src/libs/core/include/core/Service.hpp

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2019 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 <cassert>
+#include <memory>
+
+namespace lms::core
+{
+    template <typename Class>
+    class Service
+    {
+    public:
+        Service() = default;
+        Service(std::unique_ptr<Class> service)
+        {
+            assign(std::move(service));
+        }
+
+        ~Service()
+        {
+            clear();
+        }
+
+        Service(const Service&) = delete;
+        Service(Service&&) = delete;
+        Service& operator=(const Service&) = delete;
+        Service& operator=(Service&&) = delete;
+
+        Class* operator->() const
+        {
+            return Service<Class>::get();
+        }
+
+        Class& operator*() const
+        {
+            return *Service<Class>::get();
+        }
+
+        static Class* get() { return _service.get(); }
+        static bool exists() { return _service.get(); }
+
+        template <typename SubClass>
+        static Class& assign(std::unique_ptr<SubClass> service)
+        {
+            assert(!_service);
+            _service = std::move(service);
+            return *get();
+        }
+
+    private:
+        static void clear() { _service.reset(); }
+
+        static inline std::unique_ptr<Class> _service;
+    };
+}

src/libs/core/include/core/StreamLogger.hpp

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2019 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 "core/EnumSet.hpp"
+#include "core/ILogger.hpp"
+
+namespace lms::core::logging
+{
+    class StreamLogger final : public ILogger
+    {
+    public:
+        static constexpr EnumSet<Severity> allSeverities{ Severity::FATAL, Severity::ERROR, Severity::WARNING, Severity::INFO, Severity::DEBUG };
+        static constexpr EnumSet<Severity> defaultSeverities{ Severity::FATAL, Severity::ERROR, Severity::WARNING, Severity::INFO };
+
+        StreamLogger(std::ostream& oss, EnumSet<Severity> severities = defaultSeverities);
+
+        bool isSeverityActive(Severity severity) const override { return _severities.contains(severity); }
+        void processLog(const Log& log) override;
+
+    private:
+        std::ostream& _os;
+        const EnumSet<Severity> _severities;
+    };
+}

src/libs/core/include/core/String.hpp

@@ -36,7 +36,7 @@ namespace Wt
     class WDateTime;
 }
 
-namespace StringUtils
+namespace lms::core::stringUtils
 {
     [[nodiscard]] std::vector<std::string_view> splitString(std::string_view string, char separator);
     [[nodiscard]] std::vector<std::string_view> splitString(std::string_view string, std::string_view separator);
@@ -100,5 +100,4 @@ namespace StringUtils
 
     [[nodiscard]] std::string toISO8601String(const Wt::WDateTime& dateTime);
     [[nodiscard]] std::string toISO8601String(const Wt::WDate& date);
-
-} // StringUtils
+}

src/libs/core/include/core/Tuple.hpp

@@ -21,9 +21,9 @@
 
 #include <tuple>
 
-namespace Utils
+namespace lms::core
 {
-	namespace Details
+	namespace details
 	{
 		template<int... Is>
 		struct Seq { };
@@ -44,8 +44,6 @@ namespace Utils
 	template<typename... Ts, typename Func>
 	void forEachTypeInTuple(std::tuple<Ts...> const& t, Func f)
 	{
-	    Details::forEachTypeInTuple(t, f, Details::GenSeq<sizeof...(Ts)>());
+	    details::forEachTypeInTuple(t, f, details::GenSeq<sizeof...(Ts)>());
 	}
-}
-
-
+}

src/libs/core/include/core/UUID.hpp

@@ -23,27 +23,29 @@
 #include <string>
 #include <string_view>
 
-#include "utils/String.hpp"
+#include "core/String.hpp"
 
-class UUID
+namespace lms::core
 {
-public:
-    static std::optional<UUID> fromString(std::string_view str);
-    static UUID generate();
+    class UUID
+    {
+    public:
+        static std::optional<UUID> fromString(std::string_view str);
+        static UUID generate();
 
-    std::string_view getAsString() const { return _value; }
+        std::string_view getAsString() const { return _value; }
 
-    bool operator<=>(const UUID&) const = default;
+        bool operator<=>(const core::UUID&) const = default;
 
-private:
-    UUID(std::string_view value);
-    std::string _value;
-};
+    private:
+        UUID(std::string_view value);
+        std::string _value;
+    };
+}
 
-namespace StringUtils
+namespace lms::core::stringUtils
 {
     template <>
     std::optional<UUID>
         readAs(std::string_view str);
 }
-

src/libs/core/include/core/Utils.hpp

@@ -22,9 +22,8 @@
 #include <algorithm>
 #include <functional>
 
-namespace Utils
+namespace lms::core::utils
 {
-
 	template<class T, class Compare = std::less<>>
 	constexpr T clamp(T v, T lo, T hi, Compare comp = {})
 	{
@@ -39,5 +38,4 @@ namespace Utils
 		if (std::find(std::cbegin(container), std::cend(container), val) == std::cend(container))
 			container.push_back(val);
 	}
-
-}
+}

src/libs/core/include/core/WtLogger.hpp

@@ -21,17 +21,20 @@
 
 #include <string>
 
-#include "utils/ILogger.hpp"
+#include "core/ILogger.hpp"
 
-class WtLogger final : public ILogger
+namespace lms::core::logging
 {
-public:
-    WtLogger(Severity minSeverity);
+    class WtLogger final : public ILogger
+    {
+    public:
+        WtLogger(Severity minSeverity);
 
-    static std::string computeLogConfig(Severity minSeverity);
+        static std::string computeLogConfig(Severity minSeverity);
 
-private:
-    bool isSeverityActive(Severity severity) const override;
-    void processLog(const Log& log) override;
-    const Severity _minSeverity;
-};
+    private:
+        bool isSeverityActive(Severity severity) const override;
+        void processLog(const Log& log) override;
+        const Severity _minSeverity;
+    };
+}

src/libs/core/include/core/ZipperResourceHandlerCreator.hpp

@@ -21,8 +21,10 @@
 
 #include <memory>
 
-#include "utils/IResourceHandler.hpp"
-#include "utils/IZipper.hpp"
-
-std::unique_ptr<IResourceHandler> createZipperResourceHandler(std::unique_ptr<Zip::IZipper> zipper);
+#include "core/IResourceHandler.hpp"
+#include "core/IZipper.hpp"
 
+namespace lms::zip
+{
+    std::unique_ptr<IResourceHandler> createZipperResourceHandler(std::unique_ptr<IZipper> zipper);
+}

src/libs/core/include/core/http/ClientRequestParameters.hpp

@@ -25,36 +25,35 @@
 
 #include <Wt/Http/Message.h>
 
-namespace Http
+namespace lms::core::http
 {
-	struct ClientRequestParameters
-	{
-		enum class Priority
-		{
-			High,
-			Normal,
-			Low,
-		};
+    struct ClientRequestParameters
+    {
+        enum class Priority
+        {
+            High,
+            Normal,
+            Low,
+        };
 
-		Priority	priority {Priority::Normal};
-		std::string relativeUrl; // relative to baseUrl used by the client
+        Priority	priority{ Priority::Normal };
+        std::string relativeUrl; // relative to baseUrl used by the client
 
-		using OnSuccessFunc = std::function<void(std::string_view msgBody)>;
-		OnSuccessFunc onSuccessFunc;
+        using OnSuccessFunc = std::function<void(std::string_view msgBody)>;
+        OnSuccessFunc onSuccessFunc;
 
-		using OnFailureFunc = std::function<void()>;
-		OnFailureFunc onFailureFunc;
-	};
+        using OnFailureFunc = std::function<void()>;
+        OnFailureFunc onFailureFunc;
+    };
 
-	struct ClientGETRequestParameters final : public ClientRequestParameters
-	{
-		std::vector<Wt::Http::Message::Header> headers;
-	};
+    struct ClientGETRequestParameters final : public ClientRequestParameters
+    {
+        std::vector<Wt::Http::Message::Header> headers;
+    };
 
-	struct ClientPOSTRequestParameters final : public ClientRequestParameters
-	{
-		Wt::Http::Message message;
-	};
-
-} // namespace Http
+    struct ClientPOSTRequestParameters final : public ClientRequestParameters
+    {
+        Wt::Http::Message message;
+    };
 
+}

src/libs/core/include/core/http/IClient.hpp

@@ -22,19 +22,18 @@
 #include <string_view>
 #include <boost/asio/io_context.hpp>
 
-#include "utils/http/ClientRequestParameters.hpp"
+#include "core/http/ClientRequestParameters.hpp"
 
-namespace Http
+namespace lms::core::http
 {
 	class IClient
 	{
-		public:
-			virtual ~IClient() = default;
+	public:
+		virtual ~IClient() = default;
 
-			virtual void sendGETRequest(ClientGETRequestParameters&& request) = 0;
-			virtual void sendPOSTRequest(ClientPOSTRequestParameters&& request) = 0;
+		virtual void sendGETRequest(ClientGETRequestParameters&& request) = 0;
+		virtual void sendPOSTRequest(ClientPOSTRequestParameters&& request) = 0;
 	};
 
 	std::unique_ptr<IClient> createClient(boost::asio::io_context& ioContext, std::string_view baseUrl);
-} // namespace Http
-
+}

src/libs/core/test/CMakeLists.txt

@@ -1,6 +1,6 @@
 include(GoogleTest)
 
-add_executable(test-utils
+add_executable(test-core
 	EnumSet.cpp
 	LiteralString.cpp
 	Path.cpp
@@ -10,13 +10,13 @@ add_executable(test-utils
 	Utils.cpp
 	)
 
-target_link_libraries(test-utils PRIVATE
-	lmsutils
+target_link_libraries(test-core PRIVATE
+	lmscore
 	Threads::Threads
 	GTest::GTest
 	)
 
 if (NOT CMAKE_CROSSCOMPILING)
-	gtest_discover_tests(test-utils)
+	gtest_discover_tests(test-core)
 endif()
 

src/libs/core/test/EnumSet.cpp

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2019 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 <gtest/gtest.h>
+
+#include "core/EnumSet.hpp"
+
+namespace lms::core
+{
+    TEST(EnumSet, ctr)
+    {
+        enum class Foo
+        {
+            One,
+            Two,
+        };
+
+        {
+            constexpr EnumSet<Foo> test{ Foo::One };
+
+            static_assert(!test.empty());
+            static_assert(test.contains(Foo::One));
+            static_assert(!test.contains(Foo::Two));
+
+            EXPECT_TRUE(!test.empty());
+            EXPECT_TRUE(test.contains(Foo::One));
+            EXPECT_FALSE(test.contains(Foo::Two));
+
+            static_assert(test.getBitfield() != 0);
+        }
+
+        {
+            constexpr EnumSet<Foo> test{ Foo::One, Foo::Two };
+            constexpr auto bitfield{ test.getBitfield() };
+
+            EnumSet<Foo> test2;
+            EXPECT_FALSE(test2.contains(Foo::One));
+            EXPECT_FALSE(test2.contains(Foo::Two));
+
+            test2.setBitfield(bitfield);
+
+            EXPECT_TRUE(test2.contains(Foo::One));
+            EXPECT_TRUE(test2.contains(Foo::Two));
+            EXPECT_EQ(test, test2);
+        }
+    }
+}

src/libs/core/test/LiteralString.cpp

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 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 <unordered_map>
+#include <gtest/gtest.h>
+
+#include "core/LiteralString.hpp"
+
+namespace lms::core
+{
+    TEST(LiteralString, ctr)
+    {
+        {
+            constexpr LiteralString foo{ "abc" };
+            static_assert(foo.length() == 3);
+            static_assert(foo == "abc");
+            static_assert(foo == LiteralString{ "abc" });
+            static_assert(foo < LiteralString{ "abcd" });
+            static_assert(foo > LiteralString{ "aac" });
+
+            EXPECT_EQ(::strlen(foo.c_str()), 3);
+            EXPECT_EQ(foo, LiteralString{ "abc" });
+            EXPECT_GT(foo, LiteralString{ "abb" });
+            EXPECT_LT(foo, LiteralString{ "abcd" });
+        }
+
+        {
+            constexpr LiteralString foo{ "" };
+            static_assert(foo.length() == 0);
+            static_assert(foo == "");
+            static_assert(foo == LiteralString{ "" });
+            static_assert(foo < LiteralString{ "a" });
+            EXPECT_EQ(::strlen(foo.c_str()), 0);
+        }
+    }
+
+    TEST(LiteralString, unordered_map)
+    {
+        {
+            std::unordered_map<LiteralString, int> myMap{ {"abc", 42} };
+
+            EXPECT_TRUE(myMap.contains("abc"));
+            EXPECT_TRUE(myMap.contains(LiteralString{ "abc" }));
+            EXPECT_FALSE(myMap.contains("abcd"));
+        }
+
+        {
+            std::unordered_map<LiteralString, int, LiteralStringHash, LiteralStringEqual> myMap{ {"abc", 42} };
+            EXPECT_TRUE(myMap.contains(std::string{ "abc" }));
+            EXPECT_TRUE(myMap.contains(std::string_view{ "abc" }));
+            EXPECT_FALSE(myMap.contains(std::string{ "abcd" }));
+            EXPECT_FALSE(myMap.contains(std::string_view{ "abcd" }));
+        }
+
+    }
+}

src/libs/core/test/Path.cpp

@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2019 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 <gtest/gtest.h>
+
+#include "core/Path.hpp"
+
+namespace lms::core::pathUtils::tests
+{
+    TEST(Path, getLongestCommonPath)
+    {
+        struct TestCase
+        {
+            std::filesystem::path path1;
+            std::filesystem::path path2;
+            std::filesystem::path expectedCommonPath;
+        };
+
+        TestCase tests[]
+        {
+            {"foo.txt", "/foo/foo.txt", ""},
+            {"/", "/file.txt", "/"},
+            {"/foo/bar/file1.txt", "/foo/bar/file2.txt", "/foo/bar"},
+            {"/foo/bar/file.txt", "/foo/bar/file.txt", "/foo/bar/file.txt"},
+            {"/dir1/file.txt", "/dir2/file.txt", "/"},
+            {"/prefix/folder/file.txt", "/prefix/folder/subfolder/file.txt", "/prefix/folder"},
+        };
+
+        for (const TestCase& test : tests)
+        {
+            EXPECT_EQ(core::pathUtils::getLongestCommonPath(test.path1, test.path2), test.expectedCommonPath);
+        }
+    }
+
+
+    TEST(Path, getLongestCommonPathIterator)
+    {
+        struct TestCase
+        {
+            std::vector<std::filesystem::path> paths;
+            std::filesystem::path expectedCommonPath;
+        };
+
+        TestCase tests[]
+        {
+            {{}, ""},
+            {{"/"}, "/"},
+            {{"/foo", "/bar"}, "/"},
+            {{"/foo/bar/file1.txt", "/foo/bar/file2.txt"}, "/foo/bar"},
+            {{"/foo", "/foo/"}, "/foo"},
+            {{"/foo", "/foo"}, "/foo"},
+            {{"/foo/", "/foo/"}, "/foo/"},
+            {{"/foo/", "/foo/", "/bar"}, "/"},
+            {{"/foo/", "/foo/", "/foo/bar"}, "/foo"},
+        };
+
+        for (const TestCase& test : tests)
+        {
+            EXPECT_EQ(core::pathUtils::getLongestCommonPath(std::cbegin(test.paths), std::cend(test.paths)), test.expectedCommonPath);
+        }
+    }
+
+    TEST(Path, isPathInRootPath)
+    {
+        struct TestCase
+        {
+            std::filesystem::path path;
+            std::filesystem::path rootPath;
+            bool expectedResult;
+        };
+
+        TestCase tests[]
+        {
+            {"/file.txt", "/", true},
+            {"/root/folder/file.txt", "/root", true},
+            {"/root/file.txt", "/root", true},
+            {"/root/file.txt", "/root/", true},
+            {"/root", "/root", true},
+            {"/root", "/root/", true},
+            {"/root/", "/root", true},
+            {"/root/", "/root/", true},
+            {"/folder/file.txt", "/root", false},
+            {"/folder/file.txt", "/root/", false},
+            {"", "/root", false},
+        };
+
+        for (const TestCase& test : tests)
+        {
+            EXPECT_EQ(core::pathUtils::isPathInRootPath(test.path, test.rootPath), test.expectedResult) << "Failed: path = " << test.path << ", rootPath = " << test.rootPath;
+        }
+    }
+}

src/libs/core/test/RecursiveSharedMutex.cpp

@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2019 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 <atomic>
+#include <chrono>
+#include <thread>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+#include "core/RecursiveSharedMutex.hpp"
+
+namespace lms::core
+{
+    TEST(RecursiveSharedMutex, SingleThreaded)
+    {
+        RecursiveSharedMutex mutex;
+
+        {
+            std::unique_lock lock{ mutex };
+        }
+
+        {
+            std::shared_lock lock{ mutex };
+        }
+
+        {
+            std::unique_lock lock1{ mutex };
+            std::unique_lock lock2{ mutex };
+        }
+
+        {
+            std::shared_lock lock1{ mutex };
+            std::shared_lock lock2{ mutex };
+        }
+
+        {
+            std::unique_lock lock1{ mutex };
+            std::shared_lock lock2{ mutex };
+        }
+    }
+
+    TEST(RecursiveSharedMutex, MultiThreaded)
+    {
+        constexpr std::size_t nbThreads{ 10 };
+        std::vector<std::thread> threads;
+
+        RecursiveSharedMutex mutex;
+        std::atomic<std::size_t> nbUnique{};
+        std::atomic<std::size_t> nbShared{};
+        for (std::size_t i{}; i < nbThreads; ++i)
+        {
+            threads.emplace_back([&]
+                {
+                    {
+                        std::unique_lock lock{ mutex };
+
+                        std::shared_lock lock2{ mutex };
+
+                        assert(nbUnique == 0);
+                        assert(nbShared == 0);
+                        nbUnique++;
+                        std::this_thread::sleep_for(std::chrono::milliseconds(5));
+                        assert(nbUnique == 1);
+                        assert(nbShared == 0);
+                        nbUnique--;
+                    }
+
+                    {
+                        std::shared_lock lock{ mutex };
+                        std::shared_lock lock2{ mutex };
+
+                        assert(nbUnique == 0);
+                        nbShared++;
+
+                        std::this_thread::sleep_for(std::chrono::milliseconds(15));
+
+                        assert(nbShared > 0);
+                        assert(nbShared <= nbThreads);
+                        assert(nbUnique == 0);
+                        nbShared--;
+                    }
+                });
+        }
+
+        for (std::thread& t : threads)
+            t.join();
+    }
+}

src/libs/core/test/String.cpp

@@ -0,0 +1,297 @@
+/*
+ * Copyright (C) 2019 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 <gtest/gtest.h>
+
+#include <Wt/WDateTime.h>
+#include <Wt/WDate.h>
+#include <Wt/WTime.h>
+#include "core/String.hpp"
+
+namespace lms::core::stringUtils::tests
+{
+    TEST(StringUtils, splitString_charDelim)
+    {
+        struct TestCase
+        {
+            std::string_view input;
+            char delimiter;
+            std::vector<std::string_view> expectedOutput;
+        };
+
+        TestCase tests[]
+        {
+            {"abc", '-', {"abc"}},
+            {"a", '-', {"a"}},
+            {"", '-', {""}},
+            {"a-b-c", '-', {"a", "b", "c"}},
+            {"a|b|c", '|', {"a", "b", "c"}},
+            {"a;b;c", ';', {"a", "b", "c"}},
+            {";b;c", ';', {"", "b", "c"}},
+            {" ;b;c", ';', {" ", "b", "c"}},
+            {" ;;c", ';', {" ", "", "c"}},
+            {" ; ;c", ';', {" ", " ", "c"}},
+            {"a;b; ", ';', {"a", "b", " "}},
+            {"a;b", ';', {"a", "b"}},
+            {";b", ';', {"", "b"}},
+            {";", ';', {"", ""}},
+            {";;", ';', {"", "", ""}},
+            {";;;", ';', {"", "", "", ""}},
+            {";;a;;b;;", ';', {"", "", "a", "", "b", "", ""}},
+            {"a b", ' ', {"a", "b"}},
+            {"", ' ', {""}},
+            {"a-b|c", '-', {"a","b|c"}},
+            {"a|b-c", '-', {"a|b", "c"}},
+            {"test=foo bar", '=', {"test", "foo bar"}},
+        };
+
+        for (const TestCase& test : tests)
+        {
+            const std::vector<std::string_view> res{ splitString(test.input, test.delimiter) };
+            EXPECT_EQ(res, test.expectedOutput) << "Input = '" << test.input << "', delims = '" << test.delimiter << "'";
+        }
+    }
+
+    TEST(StringUtils, splitString_stringDelim)
+    {
+        struct TestCase
+        {
+            std::string_view input;
+            std::string_view delimiter;
+            std::vector<std::string_view> expectedOutput;
+        };
+
+        TestCase tests[]
+        {
+            {"abc", "", {"abc"}},
+            {"abc", "-", {"abc"}},
+            {"abc", "b", {"a", "c"}},
+            {"ab/cd", "/", {"ab", "cd"}},
+            {"ab/cd", "/ ", {"ab/cd"}},
+            {"ab/cd", " /", {"ab/cd"}},
+            {"ab /cd", " /", {"ab", "cd"}},
+            {"ab/ cd", "/ ", {"ab", "cd"}},
+            {"ab / cd", " / ", {"ab", "cd"}},
+            {"ab/cd", " / ", {"ab/cd"}},
+            {"ab/cd / ", " / ", {"ab/cd", ""}},
+        };
+
+        for (const TestCase& test : tests)
+        {
+            const std::vector<std::string_view> res{ splitString(test.input, test.delimiter) };
+            EXPECT_EQ(res, test.expectedOutput) << "Input = '" << test.input << "', delims = '" << test.delimiter << "'";
+        }
+    }
+
+    TEST(StringUtils, joinStrings)
+    {
+        struct TestCase
+        {
+            std::vector<std::string_view> input;
+            std::string delimiter;
+            std::string expectedOutput;
+        };
+
+        TestCase tests[]
+        {
+            {{"a", "b", "c"}, "-", "a-b-c"},
+            {{"a", "b", "c"}, ",", "a,b,c"},
+            {{"a", "b", "c"}, "***", "a***b***c"},
+            {{"a", "", "c"}, "-", "a--c"},
+            {{"", "b", "c"}, "-", "-b-c"},
+            {{"a"}, "-", "a"},
+            {{"a"}, ",", "a"},
+        };
+
+        for (const TestCase& test : tests)
+        {
+            const std::string str{ joinStrings(test.input, test.delimiter) };
+            EXPECT_EQ(str, test.expectedOutput);
+        }
+    }
+
+    TEST(StringUtils, escapeAndJoinStrings)
+    {
+        struct TestCase
+        {
+            std::vector<std::string_view> input;
+            char delimiter;
+            char escapeChar;
+            std::string expectedOutput;
+        };
+
+        TestCase tests[]
+        {
+            {{""}, ';', '\\', ""},
+            {{";"}, ';', '\\', "\\;"},
+            {{";;"}, ';', '\\', "\\;\\;"},
+            {{"a;", "b"}, ';', '\\', "a\\;;b"},
+            {{"a;", "b;"}, ';', '\\', "a\\;;b\\;"},
+        };
+
+        for (const TestCase& test : tests)
+        {
+            const std::string str{ escapeAndJoinStrings(test.input, test.delimiter, test.escapeChar) };
+            EXPECT_EQ(str, test.expectedOutput);
+        }
+    }
+
+    TEST(StringUtils, splitEscapedStrings)
+    {
+        struct TestCase
+        {
+            std::string input;
+            char delimiter;
+            char escapeChar;
+            std::vector<std::string> expectedOutput;
+        };
+
+        TestCase tests[]
+        {
+            {"", ';', '\\', {}},
+            {"\\;", ';', '\\', {";"}},
+            {"\\;\\;", ';', '\\', {";;"}},
+            {"a\\;;b", ';', '\\', {"a;", "b"}},
+            {"a\\;;b\\;", ';', '\\', {"a;", "b;"}},
+        };
+
+        for (const TestCase& test : tests)
+        {
+            const std::vector<std::string> str{ splitEscapedStrings(test.input, test.delimiter, test.escapeChar) };
+            EXPECT_EQ(str, test.expectedOutput);
+        }
+    }
+
+    TEST(StringUtils, escapeJSString)
+    {
+        EXPECT_EQ(jsEscape(""), "");
+        EXPECT_EQ(jsEscape(R"(Test'.mp3)"), R"(Test\'.mp3)");
+        EXPECT_EQ(jsEscape(R"(Test"".mp3)"), R"(Test\"\".mp3)");
+        EXPECT_EQ(jsEscape(R"(\Test\.mp3)"), R"(\\Test\\.mp3)");
+    }
+
+    TEST(StringUtils, escapeJsonString)
+    {
+        EXPECT_EQ(jsonEscape(""), "");
+        EXPECT_EQ(jsonEscape(R"(Test'.mp3)"), R"(Test'.mp3)");
+        EXPECT_EQ(jsonEscape(R"(Test"".mp3)"), R"(Test\"\".mp3)");
+        EXPECT_EQ(jsonEscape(R"(\Test\.mp3)"), R"(\\Test\\.mp3)");
+    }
+
+    TEST(StringUtils, escapeString)
+    {
+        EXPECT_EQ(escapeString("", "*", ' '), "");
+        EXPECT_EQ(escapeString("", "", ' '), "");
+        EXPECT_EQ(escapeString("a", "", ' '), "a");
+        EXPECT_EQ(escapeString("*", "*", '_'), "_*");
+        EXPECT_EQ(escapeString("*a*", "*", '_'), "_*a_*");
+        EXPECT_EQ(escapeString("*a|", "*|", '_'), "_*a_|");
+        EXPECT_EQ(escapeString("**||", "*|", '_'), "_*_*_|_|");
+        EXPECT_EQ(escapeString("one;two", ";", '\\'), "one\\;two");
+        EXPECT_EQ(escapeString("one\\;two", ";", '\\'), "one\\\\;two");
+        EXPECT_EQ(escapeString("one;", ";", '\\'), "one\\;");
+    }
+
+    TEST(StringUtils, unescapeString)
+    {
+        EXPECT_EQ(unescapeString("one\\", '\\'), "one\\");
+        EXPECT_EQ(unescapeString("\\\\one", '\\'), "\\one");
+        EXPECT_EQ(unescapeString("one\\;two", '\\'), "one;two");
+        EXPECT_EQ(unescapeString("one\\\\;two", '\\'), "one\\;two");
+    }
+
+    TEST(StringUtils, readAs_bool)
+    {
+        EXPECT_EQ(readAs<bool>("true"), true);
+        EXPECT_EQ(readAs<bool>("1"), true);
+        EXPECT_EQ(readAs<bool>("false"), false);
+        EXPECT_EQ(readAs<bool>("0"), false);
+        EXPECT_EQ(readAs<bool>("foo"), std::nullopt);
+        EXPECT_EQ(readAs<bool>(""), std::nullopt);
+    }
+
+    TEST(StringUtils, readAs_int)
+    {
+        EXPECT_EQ(readAs<int>("1024"), 1024);
+        EXPECT_EQ(readAs<int>("0"), 0);
+        EXPECT_EQ(readAs<int>("-0"), 0);
+        EXPECT_EQ(readAs<int>("-1"), -1);
+        EXPECT_EQ(readAs<int>(""), std::nullopt);
+        EXPECT_EQ(readAs<int>("a"), std::nullopt);
+        EXPECT_EQ(readAs<int>("-"), std::nullopt);
+        EXPECT_EQ(readAs<int>("1024-1"), 1024);
+        EXPECT_EQ(readAs<int>("1024-"), 1024);
+        EXPECT_EQ(readAs<int>("1024/5"), 1024);
+        EXPECT_EQ(readAs<int>("1024a"), 1024);
+        EXPECT_EQ(readAs<int>("a1024a"), std::nullopt);
+    }
+
+    TEST(StringUtils, capitalize)
+    {
+        struct TestCase
+        {
+            std::string input;
+            std::string expectedOutput;
+        };
+
+        TestCase tests[]
+        {
+            {"", ""},
+            {"C", "C"},
+            {"c", "C"},
+            {" c", " C"},
+            {" cc", " Cc"},
+            {"(c", "(c"},
+            {"1c", "1c"},
+            {"&c", "&c"},
+            {"c c", "C c"}
+        };
+
+        for (const TestCase& test : tests)
+        {
+            std::string str{ test.input };
+            capitalize(str);
+            EXPECT_EQ(str, test.expectedOutput) << " str was '" << test.input << "'";
+        }
+    }
+
+    TEST(Stringutils, date)
+    {
+        const Wt::WDate date{ 2020, 01, 03 };
+        EXPECT_EQ(toISO8601String(date), "2020-01-03");
+    }
+
+    TEST(Stringutils, dateTime)
+    {
+        const Wt::WDateTime dateTime{ Wt::WDate {2020, 01, 03 }, Wt::WTime{9, 8, 11, 75} };
+        EXPECT_EQ(toISO8601String(dateTime), "2020-01-03T09:08:11.075");
+    }
+
+    TEST(StringUtils, stringEndsWith)
+    {
+        EXPECT_TRUE(stringEndsWith("FooBar", "Bar"));
+        EXPECT_TRUE(stringEndsWith("FooBar", ""));
+        EXPECT_TRUE(stringEndsWith("", ""));
+        EXPECT_TRUE(stringEndsWith("FooBar", "ar"));
+        EXPECT_TRUE(stringEndsWith("FooBar", "FooBar"));
+        EXPECT_FALSE(stringEndsWith("FooBar", "1FooBar"));
+        EXPECT_FALSE(stringEndsWith("FooBar", "1FooBar"));
+        EXPECT_FALSE(stringEndsWith("FooBar", "R"));
+    }
+}

src/libs/core/test/TraceLogger.cpp

@@ -21,9 +21,9 @@
 #include <thread>
 #include <gtest/gtest.h>
 
-#include "utils/ITraceLogger.hpp"
+#include "core/ITraceLogger.hpp"
 
-namespace tracing::tests
+namespace lms::core::tracing::tests
 {
     // not much can be tested with this implementation
     TEST(TraceLogger, MultipleThreads)
@@ -45,7 +45,7 @@ namespace tracing::tests
 
         std::ostringstream oss;
         traceLogger->dumpCurrentBuffer(oss);
-       
+
         EXPECT_NE(oss.str().find("MyEventLogged"), std::string::npos);
         EXPECT_EQ(oss.str().find("MyEventNotLogged"), std::string::npos);
     }

src/libs/database/CMakeLists.txt

@@ -37,7 +37,7 @@ target_link_libraries(lmsdatabase PRIVATE
 	)
 
 target_link_libraries(lmsdatabase PUBLIC
-	lmsutils
+	lmscore
 	std::filesystem
 	Wt::Dbo
 	)

src/libs/database/impl/Artist.cpp

@@ -25,13 +25,13 @@
 #include "database/Session.hpp"
 #include "database/Track.hpp"
 #include "database/User.hpp"
-#include "utils/ILogger.hpp"
+#include "core/ILogger.hpp"
 #include "SqlQuery.hpp"
 #include "Utils.hpp"
 #include "EnumSetTraits.hpp"
 #include "IdTypeTraits.hpp"
 
-namespace Database
+namespace lms::db
 {
     namespace
     {
@@ -67,16 +67,16 @@ namespace Database
                 for (std::string_view keyword : params.keywords)
                 {
                     clauses.push_back("a.name LIKE ? ESCAPE '" ESCAPE_CHAR_STR "'");
-                    query.bind("%" + Utils::escapeLikeKeyword(keyword) + "%");
+                    query.bind("%" + utils::escapeLikeKeyword(keyword) + "%");
                 }
 
                 for (std::string_view keyword : params.keywords)
                 {
                     sortClauses.push_back("a.sort_name LIKE ? ESCAPE '" ESCAPE_CHAR_STR "'");
-                    query.bind("%" + Utils::escapeLikeKeyword(keyword) + "%");
+                    query.bind("%" + utils::escapeLikeKeyword(keyword) + "%");
                 }
 
-                query.where("(" + StringUtils::joinStrings(clauses, " AND ") + ") OR (" + StringUtils::joinStrings(sortClauses, " AND ") + ")");
+                query.where("(" + core::stringUtils::joinStrings(clauses, " AND ") + ") OR (" + core::stringUtils::joinStrings(sortClauses, " AND ") + ")");
             }
 
             if (params.starringUser.isValid())
@@ -165,16 +165,16 @@ namespace Database
         }
     }
 
-    Artist::Artist(const std::string& name, const std::optional<UUID>& MBID)
+    Artist::Artist(const std::string& name, const std::optional<core::UUID>& MBID)
         : _name{ std::string(name, 0 , _maxNameLength) },
         _sortName{ _name },
         _MBID{ MBID ? MBID->getAsString() : "" }
     {
     }
 
-    Artist::pointer Artist::create(Session& session, const std::string& name, const std::optional<UUID>& MBID)
+    Artist::pointer Artist::create(Session& session, const std::string& name, const std::optional<core::UUID>& MBID)
     {
-        return session.getDboSession().add(std::unique_ptr<Artist> {new Artist{ name, MBID }});
+        return session.getDboSession().add(std::unique_ptr<Artist>{ new Artist{ name, MBID } });
     }
 
     std::size_t Artist::getCount(Session& session)
@@ -195,7 +195,7 @@ namespace Database
         return std::vector<Artist::pointer>(res.begin(), res.end());
     }
 
-    Artist::pointer Artist::find(Session& session, const UUID& mbid)
+    Artist::pointer Artist::find(Session& session, const core::UUID& mbid)
     {
         session.checkReadTransaction();
         return session.getDboSession().find<Artist>().where("mbid = ?").bind(std::string{ mbid.getAsString() }).resultValue();
@@ -218,7 +218,7 @@ namespace Database
     {
         session.checkReadTransaction();
         auto query{ session.getDboSession().query<ArtistId>("SELECT DISTINCT a.id FROM artist a WHERE NOT EXISTS(SELECT 1 FROM track t INNER JOIN track_artist_link t_a_l ON t_a_l.artist_id = a.id WHERE t.id = t_a_l.track_id)") };
-        return Utils::execQuery<ArtistId>(query, range);
+        return utils::execQuery<ArtistId>(query, range);
     }
 
     RangeResults<ArtistId> Artist::findIds(Session& session, const FindParameters& params)
@@ -226,7 +226,7 @@ namespace Database
         session.checkReadTransaction();
 
         auto query{ createQuery<ArtistId>(session, params) };
-        return Utils::execQuery<ArtistId>(query, params.range);
+        return utils::execQuery<ArtistId>(query, params.range);
     }
 
     RangeResults<Artist::pointer> Artist::find(Session& session, const FindParameters& params)
@@ -234,7 +234,7 @@ namespace Database
         session.checkReadTransaction();
 
         auto query{ createQuery<Wt::Dbo::ptr<Artist>>(session, params) };
-        return Utils::execQuery<Artist::pointer>(query, params.range);
+        return utils::execQuery<Artist::pointer>(query, params.range);
     }
 
     void Artist::find(Session& session, const FindParameters& params, std::function<void(const pointer&)> func)
@@ -242,10 +242,10 @@ namespace Database
         session.checkReadTransaction();
 
         auto query{ createQuery<Wt::Dbo::ptr<Artist>>(session, params) };
-        Utils::execQuery(query, params.range, func);
+        utils::execQuery(query, params.range, func);
     }
 
-    RangeResults<ArtistId> Artist::findSimilarArtistIds(EnumSet<TrackArtistLinkType> artistLinkTypes, std::optional<Range> range) const
+    RangeResults<ArtistId> Artist::findSimilarArtistIds(core::EnumSet<TrackArtistLinkType> artistLinkTypes, std::optional<Range> range) const
     {
         assert(session());
 
@@ -289,7 +289,7 @@ namespace Database
         for (TrackArtistLinkType type : artistLinkTypes)
             query.bind(type);
 
-        return Utils::execQuery<ArtistId>(query, range);
+        return utils::execQuery<ArtistId>(query, range);
     }
 
     std::vector<std::vector<Cluster::pointer>> Artist::getClusterGroups(std::vector<ClusterTypeId> clusterTypeIds, std::size_t size) const
@@ -338,4 +338,4 @@ namespace Database
         _sortName = std::string(sortName, 0, _maxNameLength);
     }
 
-} // namespace Database
+} // namespace lms::db

src/libs/database/impl/AuthToken.cpp

@@ -25,7 +25,7 @@
 #include "StringViewTraits.hpp"
 #include "IdTypeTraits.hpp"
 
-namespace Database
+namespace lms::db
 {
 
 	AuthToken::AuthToken(std::string_view value, const Wt::WDateTime& expiry, ObjectPtr<User> user)

src/libs/database/impl/Cluster.cpp

@@ -29,7 +29,7 @@
 #include "SqlQuery.hpp"
 #include "Utils.hpp"
 
-namespace Database
+namespace lms::db
 {
     namespace
     {
@@ -101,7 +101,7 @@ namespace Database
         session.checkReadTransaction();
         auto query{ createQuery<ClusterId>(session, params) };
 
-        return Utils::execQuery<ClusterId>(query, params.range);
+        return utils::execQuery<ClusterId>(query, params.range);
     }
 
     RangeResults<Cluster::pointer> Cluster::find(Session& session, const FindParameters& params)
@@ -109,7 +109,7 @@ namespace Database
         session.checkReadTransaction();
         auto query{ createQuery<Wt::Dbo::ptr<Cluster>>(session, params) };
 
-        return Utils::execQuery<Cluster::pointer>(query, params.range);
+        return utils::execQuery<Cluster::pointer>(query, params.range);
     }
 
     RangeResults<ClusterId> Cluster::findOrphanIds(Session& session, std::optional<Range> range)
@@ -117,7 +117,7 @@ namespace Database
         session.checkReadTransaction();
         auto query{ session.getDboSession().query<ClusterId>("SELECT DISTINCT c.id FROM cluster c WHERE NOT EXISTS(SELECT 1 FROM track_cluster t_c WHERE t_c.cluster_id = c.id)") };
 
-        return Utils::execQuery<ClusterId>(query, range);
+        return utils::execQuery<ClusterId>(query, range);
     }
 
     Cluster::pointer Cluster::find(Session& session, ClusterId id)
@@ -155,7 +155,7 @@ namespace Database
         auto query{ session()->query<TrackId>("SELECT t.id FROM track t INNER JOIN cluster c ON c.id = t_c.cluster_id INNER JOIN track_cluster t_c ON t_c.track_id = t.id")
                 .where("c.id = ?").bind(getId()) };
 
-        return Utils::execQuery<TrackId>(query, range);
+        return utils::execQuery<TrackId>(query, range);
     }
 
     ClusterType::ClusterType(std::string_view name)
@@ -185,7 +185,7 @@ namespace Database
                 " LEFT OUTER JOIN cluster c ON c_t.id = c.cluster_type_id")
             .where("c.id IS NULL") };
 
-        return Utils::execQuery<ClusterTypeId>(query, range);
+        return utils::execQuery<ClusterTypeId>(query, range);
     }
 
     RangeResults<ClusterTypeId> ClusterType::findUsed(Session& session, std::optional<Range> range)
@@ -196,7 +196,7 @@ namespace Database
                 "SELECT DISTINCT c_t.id from cluster_type c_t")
             .join("cluster c ON c_t.id = c.cluster_type_id") };
 
-        return Utils::execQuery<ClusterTypeId>(query, range);
+        return utils::execQuery<ClusterTypeId>(query, range);
     }
 
     ClusterType::pointer ClusterType::find(Session& session, std::string_view name)
@@ -219,7 +219,7 @@ namespace Database
 
         auto query{ session.getDboSession().query<ClusterTypeId>("SELECT id from cluster_type") };
 
-        return Utils::execQuery<ClusterTypeId>(query, range);
+        return utils::execQuery<ClusterTypeId>(query, range);
     }
 
     Cluster::pointer ClusterType::getCluster(const std::string& name) const
@@ -244,4 +244,4 @@ namespace Database
 
         return std::vector<Cluster::pointer>(res.begin(), res.end());
     }
-} // namespace Database
+} // namespace lms::db

src/libs/database/impl/Db.cpp

@@ -24,11 +24,11 @@
 
 #include "database/Session.hpp"
 #include "database/User.hpp"
-#include "utils/IConfig.hpp"
-#include "utils/Service.hpp"
-#include "utils/ILogger.hpp"
+#include "core/IConfig.hpp"
+#include "core/Service.hpp"
+#include "core/ILogger.hpp"
 
-namespace Database
+namespace lms::db
 {
     namespace
     {
@@ -89,7 +89,7 @@ namespace Database
         LMS_LOG(DB, INFO, "Creating connection pool on file " << dbPath.string());
 
         auto connection{ std::make_unique<Connection>(dbPath.string()) };
-        if (IConfig * config{ Service<IConfig>::get() })// may not be here on testU
+        if (core::IConfig * config{ core::Service<core::IConfig>::get() })// may not be here on testU
             connection->setProperty("show-queries", config->getBool("db-show-queries", false) ? "true" : "false");
 
         auto connectionPool{ std::make_unique<Wt::Dbo::FixedSqlConnectionPool>(std::move(connection), connectionCount) };
@@ -138,4 +138,4 @@ namespace Database
         return _connection.get();
     }
 
-} // namespace Database
+} // namespace lms::db

src/libs/database/impl/EnumSetTraits.hpp

@@ -22,22 +22,22 @@
 #include <type_traits>
 #include <Wt/Dbo/StdSqlTraits.h>
 
-#include "utils/EnumSet.hpp"
+#include "core/EnumSet.hpp"
 
 namespace Wt::Dbo
 {
     template<typename T>
-    struct sql_value_traits<EnumSet<T>, void> : public sql_value_traits<long long>
+    struct sql_value_traits<lms::core::EnumSet<T>, void> : public sql_value_traits<long long>
     {
-        using ValueType = typename EnumSet<T>::ValueType;
+        using ValueType = typename lms::core::EnumSet<T>::ValueType;
         static_assert(sizeof(long long) > sizeof(ValueType));
 
-        static void bind(EnumSet<T> v, SqlStatement* statement, int column, int size)
+        static void bind(lms::core::EnumSet<T> v, SqlStatement* statement, int column, int size)
         {
             sql_value_traits<long long>::bind(static_cast<long long>(v.getBitfield()), statement, column, size);
         }
 
-        static bool read(EnumSet<T>& v, SqlStatement* statement, int column, int size)
+        static bool read(lms::core::EnumSet<T>& v, SqlStatement* statement, int column, int size)
         {
             long long val;
             if (sql_value_traits<long long>::read(val, statement, column, size))

src/libs/database/impl/IdTypeTraits.hpp

@@ -27,9 +27,9 @@
 namespace Wt::Dbo
 {
     template<typename T>
-    struct sql_value_traits<T, typename std::enable_if<std::is_base_of<Database::IdType, T>::value>::type>
+    struct sql_value_traits<T, typename std::enable_if<std::is_base_of<lms::db::IdType, T>::value>::type>
     {
-        static_assert(!std::is_same_v<Database::IdType, T>, "Cannot use IdType, use derived types");
+        static_assert(!std::is_same_v<lms::db::IdType, T>, "Cannot use IdType, use derived types");
         static const bool specialized = true;
 
         static std::string type(SqlConnection* conn, int size)

src/libs/database/impl/Listen.cpp

@@ -25,7 +25,7 @@
 #include "SqlQuery.hpp"
 #include "Utils.hpp"
 
-namespace Database
+namespace lms::db
 {
     namespace
     {
@@ -205,7 +205,7 @@ namespace Database
         if (parameters.syncState)
             query.where("sync_state = ?").bind(*parameters.syncState);
 
-        return Utils::execQuery<ListenId>(query, parameters.range);
+        return utils::execQuery<ListenId>(query, parameters.range);
     }
 
     Listen::pointer Listen::find(Session& session, UserId userId, TrackId trackId, ScrobblingBackend backend, const Wt::WDateTime& dateTime)
@@ -229,7 +229,7 @@ namespace Database
             .orderBy("COUNT(a.id) DESC")
             .groupBy("a.id") };
 
-        return Utils::execQuery<ArtistId>(query, params.range);
+        return utils::execQuery<ArtistId>(query, params.range);
     }
 
     RangeResults<ReleaseId> Listen::getTopReleases(Session& session, const StatsFindParameters& params)
@@ -239,7 +239,7 @@ namespace Database
                         .orderBy("COUNT(r.id) DESC")
                         .groupBy("r.id") };
 
-        return Utils::execQuery<ReleaseId>(query, params.range);
+        return utils::execQuery<ReleaseId>(query, params.range);
     }
 
     RangeResults<TrackId> Listen::getTopTracks(Session& session, const StatsFindParameters& params)
@@ -249,7 +249,7 @@ namespace Database
                         .orderBy("COUNT(t.id) DESC")
                         .groupBy("t.id") };
 
-        return Utils::execQuery<TrackId>(query, params.range);
+        return utils::execQuery<TrackId>(query, params.range);
     }
 
     RangeResults<ArtistId> Listen::getRecentArtists(Session& session, const ArtistStatsFindParameters& params)
@@ -259,7 +259,7 @@ namespace Database
                         .groupBy("a.id").having("l.date_time = MAX(l.date_time)")
                         .orderBy("l.date_time DESC") };
 
-        return Utils::execQuery<ArtistId>(query, params.range);
+        return utils::execQuery<ArtistId>(query, params.range);
     }
 
     RangeResults<ReleaseId> Listen::getRecentReleases(Session& session, const StatsFindParameters& params)
@@ -269,7 +269,7 @@ namespace Database
                         .groupBy("r.id").having("l.date_time = MAX(l.date_time)")
                         .orderBy("l.date_time DESC") };
 
-        return Utils::execQuery<ReleaseId>(query, params.range);
+        return utils::execQuery<ReleaseId>(query, params.range);
     }
 
     RangeResults<TrackId> Listen::getRecentTracks(Session& session, const StatsFindParameters& params)
@@ -279,7 +279,7 @@ namespace Database
                         .groupBy("t.id").having("l.date_time = MAX(l.date_time)")
                         .orderBy("l.date_time DESC") };
 
-        return Utils::execQuery<TrackId>(query, params.range);
+        return utils::execQuery<TrackId>(query, params.range);
     }
 
     std::size_t Listen::getCount(Session& session, UserId userId, TrackId trackId)
@@ -339,4 +339,4 @@ namespace Database
             .limit(1)
             .resultValue();
     }
-} // namespace Database
+} // namespace lms::db

src/libs/database/impl/MediaLibrary.cpp

@@ -26,7 +26,7 @@
 #include "PathTraits.hpp"
 #include "StringViewTraits.hpp"
 
-namespace Database
+namespace lms::db
 {
     MediaLibrary::MediaLibrary(const std::filesystem::path& p, std::string_view name)
         : _path{ p },
@@ -75,4 +75,4 @@ namespace Database
         for (const auto& result : results)
             func(result);
     }
-} // namespace Database
+} // namespace lms::db

src/libs/database/impl/Migration.cpp

@@ -25,10 +25,10 @@
 #include "database/ScanSettings.hpp"
 #include "database/Session.hpp"
 #include "database/User.hpp"
-#include "utils/Exception.hpp"
-#include "utils/ILogger.hpp"
+#include "core/Exception.hpp"
+#include "core/ILogger.hpp"
 
-namespace Database
+namespace lms::db
 {
     namespace
     {
@@ -58,7 +58,7 @@ namespace Database
     }
 }
 
-namespace Database::Migration
+namespace lms::db::Migration
 {
     class ScopedNoForeignKeys
     {
@@ -473,14 +473,14 @@ SELECT
             catch (std::exception& e)
             {
                 LMS_LOG(DB, ERROR, "Cannot get database version info: " << e.what());
-                throw LmsException{ outdatedMsg };
+                throw core::LmsException{ outdatedMsg };
             }
 
             if (version > LMS_DATABASE_VERSION)
-                throw LmsException{ "Server binary outdated, please upgrade it to handle this database" };
+                throw core::LmsException{ "Server binary outdated, please upgrade it to handle this database" };
 
             if (version < migrationFunctions.begin()->first)
-                throw LmsException{ outdatedMsg };
+                throw core::LmsException{ outdatedMsg };
 
             while (version < LMS_DATABASE_VERSION)
             {

src/libs/database/impl/Migration.hpp

@@ -21,7 +21,7 @@
 
 #include <Wt/Dbo/Dbo.h>
 
-namespace Database
+namespace lms::db
 {
     class Session;
 

src/libs/database/impl/Release.cpp

@@ -26,14 +26,14 @@
 #include "database/Session.hpp"
 #include "database/Track.hpp"
 #include "database/User.hpp"
-#include "utils/ILogger.hpp"
+#include "core/ILogger.hpp"
 #include "SqlQuery.hpp"
 #include "EnumSetTraits.hpp"
 #include "IdTypeTraits.hpp"
 #include "StringViewTraits.hpp"
 #include "Utils.hpp"
 
-namespace Database
+namespace lms::db
 {
     namespace
     {
@@ -76,7 +76,7 @@ namespace Database
             }
 
             for (std::string_view keyword : params.keywords)
-                query.where("r.name LIKE ? ESCAPE '" ESCAPE_CHAR_STR "'").bind("%" + Utils::escapeLikeKeyword(keyword) + "%");
+                query.where("r.name LIKE ? ESCAPE '" ESCAPE_CHAR_STR "'").bind("%" + utils::escapeLikeKeyword(keyword) + "%");
 
             if (params.starringUser.isValid())
             {
@@ -227,13 +227,13 @@ namespace Database
             .resultValue();
     }
 
-    Release::Release(const std::string& name, const std::optional<UUID>& MBID)
+    Release::Release(const std::string& name, const std::optional<core::UUID>& MBID)
         : _name{ std::string(name, 0 , _maxNameLength) },
         _MBID{ MBID ? MBID->getAsString() : "" }
     {
     }
 
-    Release::pointer Release::create(Session& session, const std::string& name, const std::optional<UUID>& MBID)
+    Release::pointer Release::create(Session& session, const std::string& name, const std::optional<core::UUID>& MBID)
     {
         return session.getDboSession().add(std::unique_ptr<Release> {new Release{ name, MBID }});
     }
@@ -246,13 +246,13 @@ namespace Database
                             .query<Wt::Dbo::ptr<Release>>("SELECT DISTINCT r from release r")
                             .join("track t ON t.release_id = r.id")
                             .where("r.name = ?").bind(std::string(name, 0, _maxNameLength))
-                            .where("t.file_path LIKE ? ESCAPE '" ESCAPE_CHAR_STR "'").bind(Utils::escapeLikeKeyword(releaseDirectory.string()) + "%")
+                            .where("t.file_path LIKE ? ESCAPE '" ESCAPE_CHAR_STR "'").bind(utils::escapeLikeKeyword(releaseDirectory.string()) + "%")
                             .resultList() };
 
         return std::vector<Release::pointer>(res.begin(), res.end());
     }
 
-    Release::pointer Release::find(Session& session, const UUID& mbid)
+    Release::pointer Release::find(Session& session, const core::UUID& mbid)
     {
         session.checkReadTransaction();
 
@@ -290,7 +290,7 @@ namespace Database
         session.checkReadTransaction();
 
         auto query{ session.getDboSession().query<ReleaseId>("select r.id from release r LEFT OUTER JOIN Track t ON r.id = t.release_id WHERE t.id IS NULL") };
-        return Utils::execQuery<ReleaseId>(query, range);
+        return utils::execQuery<ReleaseId>(query, range);
     }
 
     RangeResults<Release::pointer> Release::find(Session& session, const FindParameters& params)
@@ -298,7 +298,7 @@ namespace Database
         session.checkReadTransaction();
 
         auto query{ createQuery<Wt::Dbo::ptr<Release>>(session, "DISTINCT r", params) };
-        return Utils::execQuery<pointer>(query, params.range);
+        return utils::execQuery<pointer>(query, params.range);
     }
 
     void Release::find(Session& session, const FindParameters& params, std::function<void(const pointer&)> func)
@@ -306,7 +306,7 @@ namespace Database
         session.checkReadTransaction();
 
         auto query{ createQuery<Wt::Dbo::ptr<Release>>(session, "DISTINCT r", params) };
-        Utils::execQuery<pointer>(query, params.range, func);
+        utils::execQuery<pointer>(query, params.range, func);
     }
 
     RangeResults<ReleaseId> Release::findIds(Session& session, const FindParameters& params)
@@ -314,7 +314,7 @@ namespace Database
         session.checkReadTransaction();
 
         auto query{ createQuery<ReleaseId>(session, "DISTINCT r.id", params) };
-        return Utils::execQuery<ReleaseId>(query, params.range);
+        return utils::execQuery<ReleaseId>(query, params.range);
     }
 
     std::size_t Release::getCount(Session& session, const FindParameters& params)
@@ -602,4 +602,4 @@ namespace Database
         return res;
     }
 
-} // namespace Database
+} // namespace lms::db

src/libs/database/impl/ScanSettings.cpp

@@ -23,9 +23,9 @@
 
 #include "database/MediaLibrary.hpp"
 #include "database/Session.hpp"
-#include "utils/String.hpp"
+#include "core/String.hpp"
 
-namespace Database
+namespace lms::db
 {
     void ScanSettings::init(Session& session)
     {
@@ -46,7 +46,7 @@ namespace Database
 
     std::vector<std::filesystem::path> ScanSettings::getAudioFileExtensions() const
     {
-        const auto extensions{ StringUtils::splitString(_audioFileExtensions, ' ') };
+        const auto extensions{ core::stringUtils::splitString(_audioFileExtensions, ' ') };
 
         std::vector<std::filesystem::path> res(std::cbegin(extensions), std::cend(extensions));
         std::sort(std::begin(res), std::end(res));
@@ -57,22 +57,22 @@ namespace Database
 
     std::vector<std::string_view> ScanSettings::getExtraTagsToScan() const
     {
-        return StringUtils::splitString(_extraTagsToScan, ';');
+        return core::stringUtils::splitString(_extraTagsToScan, ';');
     }
 
     std::vector<std::string> ScanSettings::getArtistTagDelimiters() const
     {
-        return StringUtils::splitEscapedStrings(_artistTagDelimiters, ';', '\\');
+        return core::stringUtils::splitEscapedStrings(_artistTagDelimiters, ';', '\\');
     }
 
     std::vector<std::string> ScanSettings::getDefaultTagDelimiters() const
     {
-        return StringUtils::splitEscapedStrings(_defaultTagDelimiters, ';', '\\');
+        return core::stringUtils::splitEscapedStrings(_defaultTagDelimiters, ';', '\\');
     }
 
     void ScanSettings::setExtraTagsToScan(const std::vector<std::string_view>& extraTags)
     {
-        std::string newTagsToScan{ StringUtils::joinStrings(extraTags, ";") };
+        std::string newTagsToScan{ core::stringUtils::joinStrings(extraTags, ";") };
         if (newTagsToScan != _extraTagsToScan)
             incScanVersion();
 
@@ -81,7 +81,7 @@ namespace Database
 
     void ScanSettings::setArtistTagDelimiters(std::span<const std::string_view> delimiters)
     {
-        std::string tagDelimiters{ StringUtils::escapeAndJoinStrings(delimiters, ';', '\\') };
+        std::string tagDelimiters{ core::stringUtils::escapeAndJoinStrings(delimiters, ';', '\\') };
         if (tagDelimiters != _artistTagDelimiters)
         {
             _artistTagDelimiters.swap(tagDelimiters);
@@ -91,7 +91,7 @@ namespace Database
 
     void ScanSettings::setDefaultTagDelimiters(std::span<const std::string_view> delimiters)
     {
-        std::string tagDelimiters{ StringUtils::escapeAndJoinStrings(delimiters, ';', '\\') };
+        std::string tagDelimiters{ core::stringUtils::escapeAndJoinStrings(delimiters, ';', '\\') };
         if (tagDelimiters != _defaultTagDelimiters)
         {
             _defaultTagDelimiters.swap(tagDelimiters);
@@ -103,4 +103,4 @@ namespace Database
     {
         _scanVersion += 1;
     }
-} // namespace Database
+} // namespace lms::db

src/libs/database/impl/Session.cpp

@@ -21,9 +21,9 @@
 
 #include <cassert>
 
-#include "utils/Exception.hpp"
-#include "utils/ILogger.hpp"
-#include "utils/ITraceLogger.hpp"
+#include "core/Exception.hpp"
+#include "core/ILogger.hpp"
+#include "core/ITraceLogger.hpp"
 
 #include "database/Artist.hpp"
 #include "database/AuthToken.hpp"
@@ -47,10 +47,9 @@
 #include "PathTraits.hpp"
 #include "Migration.hpp"
 
-namespace Database
+namespace lms::db
 {
-
-    WriteTransaction::WriteTransaction(RecursiveSharedMutex& mutex, Wt::Dbo::Session& session)
+    WriteTransaction::WriteTransaction(core::RecursiveSharedMutex& mutex, Wt::Dbo::Session& session)
         : _lock{ mutex },
         _transaction{ session }
     {
@@ -210,4 +209,4 @@ namespace Database
         LMS_LOG(DB, INFO, "Database optimizing complete");
     }
 
-} // namespace Database
+} // namespace lms::db

src/libs/database/impl/SqlQuery.cpp

@@ -23,177 +23,166 @@
 #include <cassert>
 #include <sstream>
 
-WhereClause&
-WhereClause::And(const WhereClause& otherClause)
+namespace lms::db
 {
-	if (!otherClause._clause.empty()) {
-		if (!_clause.empty())
-			_clause += " AND ";
-		_clause += "(" + otherClause._clause + ")";
+    WhereClause& WhereClause::And(const WhereClause& otherClause)
+    {
+        if (!otherClause._clause.empty()) {
+            if (!_clause.empty())
+                _clause += " AND ";
+            _clause += "(" + otherClause._clause + ")";
 
-		// Add associated bind args
-		for (const std::string& otherBindArg : otherClause._bindArgs)
-		{
-			_bindArgs.push_back(otherBindArg);
-		}
-	}
-	return *this;
-}
+            // Add associated bind args
+            for (const std::string& otherBindArg : otherClause._bindArgs)
+            {
+                _bindArgs.push_back(otherBindArg);
+            }
+        }
+        return *this;
+    }
 
-WhereClause&
-WhereClause::Or(const WhereClause& otherClause)
-{
-	if (!otherClause._clause.empty()) {
-		if (!_clause.empty())
-			_clause += " OR ";
-		_clause += "(" + otherClause._clause + ")";
+    WhereClause& WhereClause::Or(const WhereClause& otherClause)
+    {
+        if (!otherClause._clause.empty()) {
+            if (!_clause.empty())
+                _clause += " OR ";
+            _clause += "(" + otherClause._clause + ")";
 
-		// Add associated bind args
-		for (const std::string& otherBindArg : otherClause._bindArgs)
-		{
-			_bindArgs.push_back(otherBindArg);
-		}
-	}
-	return *this;
-}
+            // Add associated bind args
+            for (const std::string& otherBindArg : otherClause._bindArgs)
+            {
+                _bindArgs.push_back(otherBindArg);
+            }
+        }
+        return *this;
+    }
 
-std::string
-WhereClause::get() const
-{
-	if (!_clause.empty())
-		return "WHERE " + _clause;
-	else
-		return "";
-}
+    std::string WhereClause::get() const
+    {
+        if (!_clause.empty())
+            return "WHERE " + _clause;
+        else
+            return "";
+    }
 
-WhereClause&
-WhereClause::bind(std::string_view bindArg)
-{
-	assert(_bindArgs.size() < static_cast<std::size_t>(std::count(_clause.begin(), _clause.end(), '?')));
+    WhereClause& WhereClause::bind(std::string_view bindArg)
+    {
+        assert(_bindArgs.size() < static_cast<std::size_t>(std::count(_clause.begin(), _clause.end(), '?')));
 
-	_bindArgs.push_back(std::string{ bindArg });
+        _bindArgs.push_back(std::string{ bindArg });
 
-	return *this;
-}
+        return *this;
+    }
 
-InnerJoinClause::InnerJoinClause(const std::string& clause)
-:_clause(clause)
-{
-}
+    InnerJoinClause::InnerJoinClause(const std::string& clause)
+        :_clause(clause)
+    {
+    }
 
-InnerJoinClause&
-InnerJoinClause::And(const InnerJoinClause& clause)
-{
-	if (!_clause.empty())
-		_clause += " ";
+    InnerJoinClause& InnerJoinClause::And(const InnerJoinClause& clause)
+    {
+        if (!_clause.empty())
+            _clause += " ";
 
-	_clause += "INNER JOIN " + clause._clause;
+        _clause += "INNER JOIN " + clause._clause;
 
-	return *this;
-}
+        return *this;
+    }
 
-SelectStatement::SelectStatement(const std::string& statement)
-{
-	And(statement);
-}
+    SelectStatement::SelectStatement(const std::string& statement)
+    {
+        And(statement);
+    }
 
-SelectStatement&
-SelectStatement::And(const std::string& statement)
-{
-	_statement.push_back(statement);
+    SelectStatement& SelectStatement::And(const std::string& statement)
+    {
+        _statement.push_back(statement);
 
-	std::sort(_statement.begin(), _statement.end());
-	_statement.erase(std::unique(_statement.begin(), _statement.end()), _statement.end());
+        std::sort(_statement.begin(), _statement.end());
+        _statement.erase(std::unique(_statement.begin(), _statement.end()), _statement.end());
 
-	return *this;
-}
+        return *this;
+    }
 
-std::string
-SelectStatement::get() const
-{
-	std::string res = "SELECT ";
+    std::string SelectStatement::get() const
+    {
+        std::string res = "SELECT ";
 
-	for (auto it = _statement.begin(); it != _statement.end(); ++it)
-	{
-		if (it != _statement.begin())
-			res += ",";
-		res += *it;
-	}
+        for (auto it = _statement.begin(); it != _statement.end(); ++it)
+        {
+            if (it != _statement.begin())
+                res += ",";
+            res += *it;
+        }
 
-	return res;
-}
+        return res;
+    }
 
+    GroupByStatement& GroupByStatement::And(const GroupByStatement& statement)
+    {
+        if (_statement.empty() && !statement._statement.empty())
+            _statement = "GROUP BY ";
+        else if (!_statement.empty() && !statement._statement.empty())
+            _statement += ",";
 
+        _statement += statement._statement;
+        return *this;
+    }
 
-GroupByStatement&
-GroupByStatement::And(const GroupByStatement& statement)
-{
-	if( _statement.empty() && !statement._statement.empty())
-		_statement = "GROUP BY ";
-	else if (!_statement.empty() && !statement._statement.empty())
-		_statement += ",";
+    FromClause::FromClause(const std::string& clause)
+    {
+        _clause.push_back(clause);
+    }
 
-	_statement += statement._statement;
-	return *this;
-}
+    FromClause& FromClause::And(const FromClause& clause)
+    {
+        for (const std::string& fromClause : clause._clause)
+        {
+            _clause.push_back(fromClause);
+        }
 
-FromClause::FromClause(const std::string& clause)
-{
-	_clause.push_back(clause);
-}
+        std::sort(_clause.begin(), _clause.end());
+        _clause.erase(std::unique(_clause.begin(), _clause.end()), _clause.end());
 
-FromClause&
-FromClause::And(const FromClause& clause)
-{
-	for (const std::string& fromClause : clause._clause)
-	{
-		_clause.push_back(fromClause);
-	}
+        return *this;
+    }
 
-	std::sort(_clause.begin(), _clause.end());
-	_clause.erase(std::unique(_clause.begin(), _clause.end()), _clause.end());
+    std::string FromClause::get() const
+    {
+        std::ostringstream oss;
 
-	return *this;
-}
+        if (!_clause.empty())
+        {
+            oss << "FROM ";
+            for (auto it = _clause.begin(); it != _clause.end(); ++it) {
+                if (it != _clause.begin())
+                    oss << ",";
 
-std::string
-FromClause::get() const
-{
-	std::ostringstream oss;
+                oss << *it;
+            }
+        }
 
-	if (!_clause.empty())
-	{
-		oss << "FROM ";
-		for (auto it = _clause.begin(); it != _clause.end(); ++it) {
-			if (it != _clause.begin())
-				oss << ",";
+        return oss.str();
+    }
 
-			oss << *it;
-		}
-	}
+    std::string SqlQuery::get() const
+    {
+        std::ostringstream oss;
 
-	return oss.str();
-}
+        oss << _selectStatement.get();
 
-std::string
-SqlQuery::get() const
-{
-	std::ostringstream oss;
+        if (!_fromClause.get().empty())
+            oss << " " << _fromClause.get();
 
-	oss << _selectStatement.get();
+        if (!_innerJoinClause.get().empty())
+            oss << " " << _innerJoinClause.get();
 
-	if (!_fromClause.get().empty())
-		oss << " " << _fromClause.get();
+        if (!_whereClause.get().empty())
+            oss << " " << _whereClause.get();
 
-	if (!_innerJoinClause.get().empty())
-		oss << " " << _innerJoinClause.get();
-
-	if (!_whereClause.get().empty())
-		oss << " " << _whereClause.get();
-
-	if (!_groupByStatement.get().empty())
-		oss << " " << _groupByStatement.get();
-
-	return oss.str();
-}
+        if (!_groupByStatement.get().empty())
+            oss << " " << _groupByStatement.get();
 
+        return oss.str();
+    }
+}

src/libs/database/impl/SqlQuery.hpp

@@ -22,102 +22,103 @@
 #include <vector>
 #include <string>
 
-
-class WhereClause
+namespace lms::db
 {
-	public:
-		WhereClause() {}
-		WhereClause(const std::string& clause) { _clause = clause; }
+    class WhereClause
+    {
+    public:
+        WhereClause() {}
+        WhereClause(const std::string& clause) { _clause = clause; }
 
-		WhereClause& And(const WhereClause& clause);
-		WhereClause& Or(const WhereClause& clause);
+        WhereClause& And(const WhereClause& clause);
+        WhereClause& Or(const WhereClause& clause);
 
-		// Arguments binding (for each '?' in where clause)
-		WhereClause& bind(std::string_view arg);
+        // Arguments binding (for each '?' in where clause)
+        WhereClause& bind(std::string_view arg);
 
-		std::string get() const;
-		const std::vector<std::string>&	getBindArgs() const	{return _bindArgs;}
+        std::string get() const;
+        const std::vector<std::string>& getBindArgs() const { return _bindArgs; }
 
-	private:
-		std::string _clause;		// WHERE clause
-		std::vector<std::string>  _bindArgs;
-};
+    private:
+        std::string _clause;		// WHERE clause
+        std::vector<std::string>  _bindArgs;
+    };
 
-class InnerJoinClause
-{
-	public:
-		InnerJoinClause() {}
-		InnerJoinClause(const std::string& clause);
+    class InnerJoinClause
+    {
+    public:
+        InnerJoinClause() {}
+        InnerJoinClause(const std::string& clause);
 
-		InnerJoinClause&	And(const InnerJoinClause& clause);
-		std::string get() const	{ return _clause;}
+        InnerJoinClause& And(const InnerJoinClause& clause);
+        std::string get() const { return _clause; }
 
-	private:
-		std::string _clause;
-};
+    private:
+        std::string _clause;
+    };
 
-class GroupByStatement
-{
-	public:
-		GroupByStatement() {}
-		GroupByStatement(const std::string& statement) { _statement = statement; }
+    class GroupByStatement
+    {
+    public:
+        GroupByStatement() {}
+        GroupByStatement(const std::string& statement) { _statement = statement; }
 
-		GroupByStatement& And(const GroupByStatement& statement);
+        GroupByStatement& And(const GroupByStatement& statement);
 
-		std::string get() const      {return _statement;}
+        std::string get() const { return _statement; }
 
-	private:
-		std::string _statement;		// SELECT statement
-};
+    private:
+        std::string _statement;		// SELECT statement
+    };
 
-class SelectStatement
-{
-	public:
-		SelectStatement() {};
-		SelectStatement(const std::string& item);
+    class SelectStatement
+    {
+    public:
+        SelectStatement() {};
+        SelectStatement(const std::string& item);
 
-		SelectStatement& And(const std::string& item);
+        SelectStatement& And(const std::string& item);
 
-		std::string get() const;
+        std::string get() const;
 
-	private:
-		std::vector<std::string>	_statement;
-};
+    private:
+        std::vector<std::string>	_statement;
+    };
 
-class FromClause
-{
-	public:
-		FromClause() {}
-		FromClause(const std::string& clause);
+    class FromClause
+    {
+    public:
+        FromClause() {}
+        FromClause(const std::string& clause);
 
-		FromClause& And(const FromClause& clause);
+        FromClause& And(const FromClause& clause);
 
-		std::string get() const;
+        std::string get() const;
 
-	private:
-		std::vector<std::string>	_clause;
-};
+    private:
+        std::vector<std::string>	_clause;
+    };
 
-class SqlQuery
-{
-	public:
-		SelectStatement&	select()		{ return _selectStatement;}
-		SelectStatement&	select(const std::string& statement)		{ _selectStatement = SelectStatement(statement); return _selectStatement; }
-		FromClause&		from()		{ return _fromClause; }
-		FromClause&		from(const std::string& clause)			{ _whereClause = WhereClause(clause); return _fromClause; }
-		InnerJoinClause&	innerJoin()		{ return _innerJoinClause; }
-		WhereClause&		where()		{ return _whereClause; }
-		const WhereClause&	where() const	{ return _whereClause; }
-		GroupByStatement&	groupBy() 		{ return _groupByStatement; }
-		const GroupByStatement&	groupBy() const	{ return _groupByStatement; }
+    class SqlQuery
+    {
+    public:
+        SelectStatement& select() { return _selectStatement; }
+        SelectStatement& select(const std::string& statement) { _selectStatement = SelectStatement(statement); return _selectStatement; }
+        FromClause& from() { return _fromClause; }
+        FromClause& from(const std::string& clause) { _whereClause = WhereClause(clause); return _fromClause; }
+        InnerJoinClause& innerJoin() { return _innerJoinClause; }
+        WhereClause& where() { return _whereClause; }
+        const WhereClause& where() const { return _whereClause; }
+        GroupByStatement& groupBy() { return _groupByStatement; }
+        const GroupByStatement& groupBy() const { return _groupByStatement; }
 
-		std::string get() const;
-
-	private:
-		SelectStatement		_selectStatement;	// SELECT statement
-		InnerJoinClause		_innerJoinClause;	// INNER JOIN
-		FromClause		_fromClause;		// FROM tables
-		WhereClause		_whereClause;		// WHERE clause
-		GroupByStatement	_groupByStatement;	// GROUP BY statement
-};
+        std::string get() const;
 
+    private:
+        SelectStatement		_selectStatement;	// SELECT statement
+        InnerJoinClause		_innerJoinClause;	// INNER JOIN
+        FromClause		_fromClause;		// FROM tables
+        WhereClause		_whereClause;		// WHERE clause
+        GroupByStatement	_groupByStatement;	// GROUP BY statement
+    };
+}

src/libs/database/impl/StarredArtist.cpp

@@ -27,7 +27,7 @@
 #include "IdTypeTraits.hpp"
 #include "Utils.hpp"
 
-namespace Database
+namespace lms::db
 {
     StarredArtist::StarredArtist(ObjectPtr<Artist> artist, ObjectPtr<User> user, FeedbackBackend backend)
         : _backend{ backend }
@@ -76,6 +76,6 @@ namespace Database
 
     void StarredArtist::setDateTime(const Wt::WDateTime& dateTime)
     {
-        _dateTime = Utils::normalizeDateTime(dateTime);
+        _dateTime = utils::normalizeDateTime(dateTime);
     }
 }

src/libs/database/impl/StarredRelease.cpp

@@ -27,7 +27,7 @@
 #include "IdTypeTraits.hpp"
 #include "Utils.hpp"
 
-namespace Database
+namespace lms::db
 {
     StarredRelease::StarredRelease(ObjectPtr<Release> release, ObjectPtr<User> user, FeedbackBackend backend)
         : _backend{ backend }
@@ -76,6 +76,6 @@ namespace Database
 
     void StarredRelease::setDateTime(const Wt::WDateTime& dateTime)
     {
-        _dateTime = Utils::normalizeDateTime(dateTime);
+        _dateTime = utils::normalizeDateTime(dateTime);
     }
 }

src/libs/database/impl/StarredTrack.cpp

@@ -27,7 +27,7 @@
 #include "IdTypeTraits.hpp"
 #include "Utils.hpp"
 
-namespace Database
+namespace lms::db
 {
     StarredTrack::StarredTrack(ObjectPtr<Track> track, ObjectPtr<User> user, FeedbackBackend backend)
         : _backend{ backend }
@@ -96,11 +96,11 @@ namespace Database
         if (params.user.isValid())
             query.where("s_t.user_id = ?").bind(params.user);
 
-        return Utils::execQuery<StarredTrackId>(query, params.range);
+        return utils::execQuery<StarredTrackId>(query, params.range);
     }
 
     void StarredTrack::setDateTime(const Wt::WDateTime& dateTime)
     {
-        _dateTime = Utils::normalizeDateTime(dateTime);
+        _dateTime = utils::normalizeDateTime(dateTime);
     }
 }

src/libs/database/impl/Track.cpp

@@ -29,14 +29,14 @@
 #include "database/TrackFeatures.hpp"
 #include "database/Session.hpp"
 #include "database/User.hpp"
-#include "utils/ILogger.hpp"
+#include "core/ILogger.hpp"
 
 #include "IdTypeTraits.hpp"
 #include "SqlQuery.hpp"
 #include "StringViewTraits.hpp"
 #include "Utils.hpp"
 
-namespace Database
+namespace lms::db
 {
     namespace
     {
@@ -49,7 +49,7 @@ namespace Database
 
             assert(params.keywords.empty() || params.name.empty());
             for (std::string_view keyword : params.keywords)
-                query.where("t.name LIKE ? ESCAPE '" ESCAPE_CHAR_STR "'").bind("%" + Utils::escapeLikeKeyword(keyword) + "%");
+                query.where("t.name LIKE ? ESCAPE '" ESCAPE_CHAR_STR "'").bind("%" + utils::escapeLikeKeyword(keyword) + "%");
 
             if (!params.name.empty())
                 query.where("t.name = ?").bind(params.name);
@@ -235,7 +235,7 @@ namespace Database
         return session.getDboSession().query<int>("SELECT 1 from track").where("id = ?").bind(id).resultValue() == 1;
     }
 
-    std::vector<Track::pointer> Track::findByMBID(Session& session, const UUID& mbid)
+    std::vector<Track::pointer> Track::findByMBID(Session& session, const core::UUID& mbid)
     {
         session.checkReadTransaction();
 
@@ -246,7 +246,7 @@ namespace Database
         return std::vector<Track::pointer>(res.begin(), res.end());
     }
 
-    std::vector<Track::pointer> Track::findByRecordingMBID(Session& session, const UUID& mbid)
+    std::vector<Track::pointer> Track::findByRecordingMBID(Session& session, const core::UUID& mbid)
     {
         session.checkReadTransaction();
 
@@ -265,7 +265,7 @@ namespace Database
         // TODO Dbo traits on filesystem
         auto query{ session.getDboSession().query<QueryResultType>("SELECT id, file_path FROM track") };
 
-        RangeResults<QueryResultType> queryResults{ Utils::execQuery<QueryResultType>(query, range) };
+        RangeResults<QueryResultType> queryResults{ utils::execQuery<QueryResultType>(query, range) };
 
         RangeResults<PathResult> res;
         res.range = queryResults.range;
@@ -288,7 +288,7 @@ namespace Database
         auto query{ session.getDboSession().query<TrackId>("SELECT track.id FROM track WHERE mbid in (SELECT mbid FROM track WHERE mbid <> '' GROUP BY mbid HAVING COUNT (*) > 1)")
             .orderBy("track.release_id,track.disc_number,track.track_number,track.mbid") };
 
-        return Utils::execQuery<TrackId>(query, range);
+        return utils::execQuery<TrackId>(query, range);
     }
 
     RangeResults<TrackId> Track::findIdsWithRecordingMBIDAndMissingFeatures(Session& session, std::optional<Range> range)
@@ -299,7 +299,7 @@ namespace Database
             .where("LENGTH(t.recording_mbid) > 0")
             .where("NOT EXISTS (SELECT * FROM track_features t_f WHERE t_f.track_id = t.id)") };
 
-        return Utils::execQuery<TrackId>(query, range);
+        return utils::execQuery<TrackId>(query, range);
     }
 
     std::vector<Cluster::pointer> Track::getClusters() const
@@ -324,7 +324,7 @@ namespace Database
         session.checkReadTransaction();
 
         auto query{ createQuery<TrackId>(session, parameters) };
-        return Utils::execQuery<TrackId>(query, parameters.range);
+        return utils::execQuery<TrackId>(query, parameters.range);
     }
 
     RangeResults<Track::pointer> Track::find(Session& session, const FindParameters& parameters)
@@ -332,7 +332,7 @@ namespace Database
         session.checkReadTransaction();
 
         auto query{ createQuery<Wt::Dbo::ptr<Track>>(session, parameters) };
-        return Utils::execQuery<Track::pointer>(query, parameters.range);
+        return utils::execQuery<Track::pointer>(query, parameters.range);
     }
 
     void Track::find(Session& session, const FindParameters& params, std::function<void(const Track::pointer&)> func)
@@ -340,7 +340,7 @@ namespace Database
         session.checkReadTransaction();
 
         auto query{ createQuery<Wt::Dbo::ptr<Track>>(session, params)};
-        Utils::execQuery(query, params.range, func);
+        utils::execQuery(query, params.range, func);
     }
 
     RangeResults<TrackId> Track::findSimilarTrackIds(Session& session, const std::vector<TrackId>& tracks, std::optional<Range> range)
@@ -370,7 +370,7 @@ namespace Database
         for (TrackId trackId : tracks)
             query.bind(trackId);
 
-        return Utils::execQuery<TrackId>(query, range);
+        return utils::execQuery<TrackId>(query, range);
     }
 
     void Track::clearArtistLinks()
@@ -400,7 +400,7 @@ namespace Database
         return _copyrightURL != "" ? std::make_optional<std::string>(_copyrightURL) : std::nullopt;
     }
 
-    std::vector<Artist::pointer> Track::getArtists(EnumSet<TrackArtistLinkType> linkTypes) const
+    std::vector<Artist::pointer> Track::getArtists(core::EnumSet<TrackArtistLinkType> linkTypes) const
     {
         assert(session());
 
@@ -435,7 +435,7 @@ namespace Database
         return std::vector<Artist::pointer>(std::begin(res), std::end(res));
     }
 
-    std::vector<ArtistId> Track::getArtistIds(EnumSet<TrackArtistLinkType> linkTypes) const
+    std::vector<ArtistId> Track::getArtistIds(core::EnumSet<TrackArtistLinkType> linkTypes) const
     {
         assert(self());
         assert(session());
@@ -544,4 +544,4 @@ namespace Database
         }
     }
 
-} // namespace Database
+} // namespace lms::db

src/libs/database/impl/TrackArtistLink.cpp

@@ -26,7 +26,7 @@
 #include "IdTypeTraits.hpp"
 #include "Utils.hpp"
 
-namespace Database
+namespace lms::db
 {
     namespace
     {
@@ -84,19 +84,19 @@ namespace Database
         session.checkReadTransaction();
 
         auto query{ createQuery(session, params) };
-        return Utils::execQuery<TrackArtistLinkId>(query, params.range);
+        return utils::execQuery<TrackArtistLinkId>(query, params.range);
     }
 
-    EnumSet<TrackArtistLinkType> TrackArtistLink::findUsedTypes(Session& session)
+    core::EnumSet<TrackArtistLinkType> TrackArtistLink::findUsedTypes(Session& session)
     {
         session.checkReadTransaction();
 
         auto res{ session.getDboSession().query<TrackArtistLinkType>("SELECT DISTINCT type from track_artist_link").resultList() };
 
-        return EnumSet<TrackArtistLinkType>(std::begin(res), std::end(res));
+        return core::EnumSet<TrackArtistLinkType>(std::begin(res), std::end(res));
     }
 
-    EnumSet<TrackArtistLinkType> TrackArtistLink::findUsedTypes(Session& session, ArtistId artistId)
+    core::EnumSet<TrackArtistLinkType> TrackArtistLink::findUsedTypes(Session& session, ArtistId artistId)
     {
         session.checkReadTransaction();
 
@@ -105,7 +105,7 @@ namespace Database
             .where("artist_id = ?").bind(artistId)
             .resultList() };
 
-        return EnumSet<TrackArtistLinkType>(std::begin(res), std::end(res));
+        return core::EnumSet<TrackArtistLinkType>(std::begin(res), std::end(res));
     }
 }