150 lines
5.2 KiB
C++
150 lines
5.2 KiB
C++
/*
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* Copyright (C) 2023 Emeric Poupon
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*
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* This file is part of LMS.
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*
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* LMS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LMS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LMS. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ScanStepCheckForRemovedFiles.hpp"
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#include "core/ILogger.hpp"
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#include "core/Path.hpp"
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#include "database/Db.hpp"
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#include "database/Image.hpp"
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#include "database/Session.hpp"
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#include "database/Track.hpp"
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#include "database/TrackLyrics.hpp"
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namespace lms::scanner
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{
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namespace
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{
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constexpr std::size_t batchSize = 100;
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}
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void ScanStepCheckForRemovedFiles::process(ScanContext& context)
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{
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if (_abortScan)
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return;
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db::Session& session{ _db.getTLSSession() };
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{
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auto transaction{ session.createReadTransaction() };
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context.currentStepStats.totalElems = 0;
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context.currentStepStats.totalElems += db::Track::getCount(session);
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context.currentStepStats.totalElems += db::Image::getCount(session);
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context.currentStepStats.totalElems += db::TrackLyrics::getExternalLyricsCount(session);
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}
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LMS_LOG(DBUPDATER, DEBUG, context.currentStepStats.totalElems << " files to be checked...");
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checkForRemovedFiles<db::Track>(context, _settings.supportedAudioFileExtensions);
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checkForRemovedFiles<db::Image>(context, _settings.supportedImageFileExtensions);
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checkForRemovedFiles<db::TrackLyrics>(context, _settings.supportedLyricsFileExtensions);
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}
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template<typename Object>
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void ScanStepCheckForRemovedFiles::checkForRemovedFiles(ScanContext& context, std::span<const std::filesystem::path> supportedFileExtensions)
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{
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using namespace db;
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if (_abortScan)
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return;
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Session& session{ _db.getTLSSession() };
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std::vector<typename Object::pointer> objectsToRemove;
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typename Object::IdType lastCheckedId;
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bool endReached{};
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while (!endReached)
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{
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if (_abortScan)
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break;
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objectsToRemove.clear();
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{
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auto transaction{ session.createReadTransaction() };
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endReached = true;
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Object::find(session, lastCheckedId, batchSize, [&](const typename Object::pointer& object) {
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endReached = false;
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// special case for track lyrics, only check external lyrics
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if constexpr (std::is_same_v<Object, TrackLyrics>)
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{
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if (object->getAbsoluteFilePath().empty())
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return;
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}
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if (!checkFile(object->getAbsoluteFilePath(), supportedFileExtensions))
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objectsToRemove.push_back(object);
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context.currentStepStats.processedElems++;
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});
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}
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if (!objectsToRemove.empty())
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{
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auto transaction{ session.createWriteTransaction() };
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for (typename Object::pointer& object : objectsToRemove)
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{
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object.remove();
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context.stats.deletions++;
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}
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}
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_progressCallback(context.currentStepStats);
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}
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}
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bool ScanStepCheckForRemovedFiles::checkFile(const std::filesystem::path& p, std::span<const std::filesystem::path> allowedExtensions)
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{
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try
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{
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// For each track, make sure the the file still exists
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// and still belongs to a media directory
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if (!std::filesystem::exists(p) || !std::filesystem::is_regular_file(p))
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{
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LMS_LOG(DBUPDATER, DEBUG, "Removing '" << p.string() << "': missing");
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return false;
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}
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if (std::none_of(std::cbegin(_settings.mediaLibraries), std::cend(_settings.mediaLibraries),
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[&](const ScannerSettings::MediaLibraryInfo& libraryInfo) {
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return core::pathUtils::isPathInRootPath(p, libraryInfo.rootDirectory, &excludeDirFileName);
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}))
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{
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LMS_LOG(DBUPDATER, DEBUG, "Removing '" << p.string() << "': out of media directory");
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return false;
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}
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if (!core::pathUtils::hasFileAnyExtension(p, allowedExtensions))
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{
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LMS_LOG(DBUPDATER, DEBUG, "Removing '" << p.string() << "': file format no longer handled");
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return false;
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}
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return true;
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}
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catch (std::filesystem::filesystem_error& e)
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{
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LMS_LOG(DBUPDATER, ERROR, "Caught exception while checking file '" << p.string() << "': " << e.what());
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return false;
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}
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}
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} // namespace lms::scanner
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