const fs = require('fs-extra') const package = require('../../package.json') function escapeSingleQuotes(path) { // return path.replace(/'/g, '\'\\\'\'') return path.replace(/\\/g, '/').replace(/ /g, '\\ ').replace(/'/g, '\\\'') } // Returns first track start time // startTime is for streams starting an encode part-way through an audiobook async function writeConcatFile(tracks, outputPath, startTime = 0) { var trackToStartWithIndex = 0 var firstTrackStartTime = 0 // Find first track greater than startTime if (startTime > 0) { var currTrackEnd = 0 var startingTrack = tracks.find(t => { currTrackEnd += t.duration return startTime < currTrackEnd }) if (startingTrack) { firstTrackStartTime = currTrackEnd - startingTrack.duration trackToStartWithIndex = startingTrack.index } } var tracksToInclude = tracks.filter(t => t.index >= trackToStartWithIndex) var trackPaths = tracksToInclude.map(t => { var line = 'file ' + escapeSingleQuotes(t.fullPath) + '\n' + `duration ${t.duration}` return line }) var inputstr = trackPaths.join('\n\n') await fs.writeFile(outputPath, inputstr) return firstTrackStartTime } module.exports.writeConcatFile = writeConcatFile async function writeMetadataFile(audiobook, outputPath) { var inputstrs = [ ';FFMETADATA1', `title=${audiobook.title}`, `artist=${audiobook.author}`, `date=${audiobook.book.publishYear || ''}`, `comment=AudioBookshelf v${package.version}`, 'genre=Audiobook' ] if (audiobook.chapters) { audiobook.chapters.forEach((chap) => { const chapterstrs = [ '[CHAPTER]', 'TIMEBASE=1/1000', `START=${Math.round(chap.start * 1000)}`, `END=${Math.round(chap.end * 1000)}`, `title=${chap.title}` ] inputstrs = inputstrs.concat(chapterstrs) }) } await fs.writeFile(outputPath, inputstrs.join('\n')) return inputstrs } module.exports.writeMetadataFile = writeMetadataFile