159 lines
5.4 KiB
C++
159 lines
5.4 KiB
C++
/*
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* Copyright (C) 2024 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 "PlayListFileScanner.hpp"
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#include <fstream>
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#include <optional>
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#include "core/ILogger.hpp"
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#include "database/IDb.hpp"
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#include "database/MediaLibrary.hpp"
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#include "database/PlayListFile.hpp"
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#include "database/Session.hpp"
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#include "metadata/Exception.hpp"
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#include "metadata/PlayList.hpp"
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#include "FileScanOperationBase.hpp"
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#include "ScanContext.hpp"
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#include "Utils.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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class PlayListFileScanOperation : public FileScanOperationBase
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{
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public:
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using FileScanOperationBase::FileScanOperationBase;
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~PlayListFileScanOperation() override = default;
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PlayListFileScanOperation(const PlayListFileScanOperation&) = delete;
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PlayListFileScanOperation& operator=(const PlayListFileScanOperation&) = delete;
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private:
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core::LiteralString getName() const override { return "ScanPlayListFile"; }
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void scan() override;
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OperationResult processResult() override;
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std::optional<metadata::PlayList> _parsedPlayList;
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};
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void PlayListFileScanOperation::scan()
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{
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try
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{
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std::ifstream ifs{ getFilePath() };
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if (!ifs)
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{
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const std::error_code ec{ errno, std::generic_category() };
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addError<IOScanError>(getFilePath(), ec);
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return;
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}
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_parsedPlayList = metadata::parsePlayList(ifs);
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}
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catch (const metadata::Exception& e)
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{
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addError<PlayListFileScanError>(getFilePath());
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}
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}
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PlayListFileScanOperation::OperationResult PlayListFileScanOperation::processResult()
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{
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db::Session& dbSession{ getDb().getTLSSession() };
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db::PlayListFile::pointer playList{ db::PlayListFile::find(dbSession, getFilePath()) };
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if (!_parsedPlayList)
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{
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if (playList)
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{
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playList.remove();
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LMS_LOG(DBUPDATER, DEBUG, "Removed playlist file " << getFilePath());
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return OperationResult::Removed;
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}
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return OperationResult::Skipped;
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}
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const bool added{ !playList };
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if (!playList)
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playList = dbSession.create<db::PlayListFile>(getFilePath());
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playList.modify()->setLastWriteTime(getLastWriteTime());
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playList.modify()->setFileSize(getFileSize());
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if (!_parsedPlayList->name.empty())
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playList.modify()->setName(_parsedPlayList->name);
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else
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playList.modify()->setName(getFilePath().stem().string());
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playList.modify()->setFiles(_parsedPlayList->files);
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db::MediaLibrary::pointer mediaLibrary{ db::MediaLibrary::find(dbSession, getMediaLibrary().id) }; // may be null if settings are updated in // => next scan will correct this
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playList.modify()->setDirectory(utils::getOrCreateDirectory(dbSession, getFilePath().parent_path(), mediaLibrary));
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if (added)
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{
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LMS_LOG(DBUPDATER, DEBUG, "Added playlist file " << getFilePath());
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return OperationResult::Added;
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}
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else
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{
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LMS_LOG(DBUPDATER, DEBUG, "Updated playlist file '" << getFilePath());
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return OperationResult::Updated;
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}
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}
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} // namespace
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PlayListFileScanner::PlayListFileScanner(db::IDb& db, ScannerSettings& settings)
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: _db{ db }
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, _settings{ settings }
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{
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}
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core::LiteralString PlayListFileScanner::getName() const
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{
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return "PlayList scanner";
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}
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std::span<const std::filesystem::path> PlayListFileScanner::getSupportedFiles() const
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{
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return {};
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}
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std::span<const std::filesystem::path> PlayListFileScanner::getSupportedExtensions() const
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{
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return metadata::getSupportedPlayListFileExtensions();
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}
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bool PlayListFileScanner::needsScan(const FileToScan& file) const
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{
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db::Session& dbSession{ _db.getTLSSession() };
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auto transaction{ _db.getTLSSession().createReadTransaction() };
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const db::PlayListFile::pointer playList{ db::PlayListFile::find(dbSession, file.filePath) };
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return !playList || playList->getLastWriteTime() != file.lastWriteTime;
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}
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std::unique_ptr<IFileScanOperation> PlayListFileScanner::createScanOperation(FileToScan&& fileToScan) const
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{
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return std::make_unique<PlayListFileScanOperation>(std::move(fileToScan), _db, _settings);
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}
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} // namespace lms::scanner
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