mirror of
https://github.com/advplyr/audiobookshelf.git
synced 2024-12-20 19:06:06 +01:00
470 lines
17 KiB
JavaScript
470 lines
17 KiB
JavaScript
const OpenLibrary = require('../providers/OpenLibrary')
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const GoogleBooks = require('../providers/GoogleBooks')
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const Audible = require('../providers/Audible')
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const iTunes = require('../providers/iTunes')
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const Audnexus = require('../providers/Audnexus')
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const FantLab = require('../providers/FantLab')
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const AudiobookCovers = require('../providers/AudiobookCovers')
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const Logger = require('../Logger')
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const { levenshteinDistance, escapeRegExp } = require('../utils/index')
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class BookFinder {
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constructor() {
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this.openLibrary = new OpenLibrary()
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this.googleBooks = new GoogleBooks()
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this.audible = new Audible()
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this.iTunesApi = new iTunes()
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this.audnexus = new Audnexus()
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this.fantLab = new FantLab()
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this.audiobookCovers = new AudiobookCovers()
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this.providers = ['google', 'itunes', 'openlibrary', 'fantlab', 'audiobookcovers', 'audible', 'audible.ca', 'audible.uk', 'audible.au', 'audible.fr', 'audible.de', 'audible.jp', 'audible.it', 'audible.in', 'audible.es']
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this.verbose = false
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}
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async findByISBN(isbn) {
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var book = await this.openLibrary.isbnLookup(isbn)
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if (book.errorCode) {
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Logger.error('Book not found')
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}
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return book
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}
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filterSearchResults(books, title, author, maxTitleDistance, maxAuthorDistance) {
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var searchTitle = cleanTitleForCompares(title)
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var searchAuthor = cleanAuthorForCompares(author)
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return books.map(b => {
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b.cleanedTitle = cleanTitleForCompares(b.title)
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b.titleDistance = levenshteinDistance(b.cleanedTitle, title)
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// Total length of search (title or both title & author)
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b.totalPossibleDistance = b.title.length
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if (author) {
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if (!b.author) {
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b.authorDistance = author.length
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} else {
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b.totalPossibleDistance += b.author.length
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b.cleanedAuthor = cleanAuthorForCompares(b.author)
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var cleanedAuthorDistance = levenshteinDistance(b.cleanedAuthor, searchAuthor)
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var authorDistance = levenshteinDistance(b.author || '', author)
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// Use best distance
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b.authorDistance = Math.min(cleanedAuthorDistance, authorDistance)
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// Check book author contains searchAuthor
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if (searchAuthor.length > 4 && b.cleanedAuthor.includes(searchAuthor)) b.includesAuthor = searchAuthor
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else if (author.length > 4 && b.author.includes(author)) b.includesAuthor = author
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}
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}
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b.totalDistance = b.titleDistance + (b.authorDistance || 0)
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// Check book title contains the searchTitle
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if (searchTitle.length > 4 && b.cleanedTitle.includes(searchTitle)) b.includesTitle = searchTitle
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else if (title.length > 4 && b.title.includes(title)) b.includesTitle = title
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return b
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}).filter(b => {
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if (b.includesTitle) { // If search title was found in result title then skip over leven distance check
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if (this.verbose) Logger.debug(`Exact title was included in "${b.title}", Search: "${b.includesTitle}"`)
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} else if (b.titleDistance > maxTitleDistance) {
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if (this.verbose) Logger.debug(`Filtering out search result title distance = ${b.titleDistance}: "${b.cleanedTitle}"/"${searchTitle}"`)
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return false
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}
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if (author) {
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if (b.includesAuthor) { // If search author was found in result author then skip over leven distance check
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if (this.verbose) Logger.debug(`Exact author was included in "${b.author}", Search: "${b.includesAuthor}"`)
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} else if (b.authorDistance > maxAuthorDistance) {
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if (this.verbose) Logger.debug(`Filtering out search result "${b.author}", author distance = ${b.authorDistance}: "${b.author}"/"${author}"`)
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return false
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}
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}
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// If book total search length < 5 and was not exact match, then filter out
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if (b.totalPossibleDistance < 5 && b.totalDistance > 0) return false
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return true
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})
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}
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async getOpenLibResults(title, author, maxTitleDistance, maxAuthorDistance) {
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var books = await this.openLibrary.searchTitle(title)
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if (this.verbose) Logger.debug(`OpenLib Book Search Results: ${books.length || 0}`)
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if (books.errorCode) {
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Logger.error(`OpenLib Search Error ${books.errorCode}`)
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return []
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}
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var booksFiltered = this.filterSearchResults(books, title, author, maxTitleDistance, maxAuthorDistance)
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if (!booksFiltered.length && books.length) {
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if (this.verbose) Logger.debug(`Search has ${books.length} matches, but no close title matches`)
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}
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booksFiltered.sort((a, b) => {
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return a.totalDistance - b.totalDistance
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})
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return booksFiltered
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}
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async getGoogleBooksResults(title, author) {
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var books = await this.googleBooks.search(title, author)
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if (this.verbose) Logger.debug(`GoogleBooks Book Search Results: ${books.length || 0}`)
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if (books.errorCode) {
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Logger.error(`GoogleBooks Search Error ${books.errorCode}`)
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return []
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}
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// Google has good sort
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return books
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}
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async getFantLabResults(title, author) {
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var books = await this.fantLab.search(title, author)
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if (this.verbose) Logger.debug(`FantLab Book Search Results: ${books.length || 0}`)
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if (books.errorCode) {
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Logger.error(`FantLab Search Error ${books.errorCode}`)
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return []
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}
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return books
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}
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async getAudiobookCoversResults(search) {
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const covers = await this.audiobookCovers.search(search)
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if (this.verbose) Logger.debug(`AudiobookCovers Search Results: ${covers.length || 0}`)
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return covers || []
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}
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async getiTunesAudiobooksResults(title, author) {
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return this.iTunesApi.searchAudiobooks(title)
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}
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async getAudibleResults(title, author, asin, provider) {
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const region = provider.includes('.') ? provider.split('.').pop() : ''
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const books = await this.audible.search(title, author, asin, region)
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if (this.verbose) Logger.debug(`Audible Book Search Results: ${books.length || 0}`)
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if (!books) return []
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return books
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}
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static TitleCandidates = class {
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constructor(cleanAuthor) {
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this.candidates = new Set()
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this.cleanAuthor = cleanAuthor
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this.priorities = {}
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this.positions = {}
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this.currentPosition = 0
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}
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add(title) {
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// if title contains the author, remove it
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title = this.#removeAuthorFromTitle(title)
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const titleTransformers = [
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[/([,:;_]| by ).*/g, ''], // Remove subtitle
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[/(^| )\d+k(bps)?( |$)/, ' '], // Remove bitrate
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[/ (2nd|3rd|\d+th)\s+ed(\.|ition)?/g, ''], // Remove edition
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[/(^| |\.)(m4b|m4a|mp3)( |$)/g, ''], // Remove file-type
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[/ a novel.*$/g, ''], // Remove "a novel"
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[/^\d+ | \d+$/g, ''], // Remove preceding/trailing numbers
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]
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// Main variant
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const cleanTitle = cleanTitleForCompares(title).trim()
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if (!cleanTitle) return
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this.candidates.add(cleanTitle)
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this.priorities[cleanTitle] = 0
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this.positions[cleanTitle] = this.currentPosition
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let candidate = cleanTitle
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for (const transformer of titleTransformers)
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candidate = candidate.replace(transformer[0], transformer[1]).trim()
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if (candidate != cleanTitle) {
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if (candidate) {
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this.candidates.add(candidate)
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this.priorities[candidate] = 0
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this.positions[candidate] = this.currentPosition
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}
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this.priorities[cleanTitle] = 1
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}
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this.currentPosition++
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}
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get size() {
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return this.candidates.size
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}
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getCandidates() {
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var candidates = [...this.candidates]
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candidates.sort((a, b) => {
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// Candidates that include only digits are also likely low quality
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const onlyDigits = /^\d+$/
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const includesOnlyDigitsDiff = onlyDigits.test(a) - onlyDigits.test(b)
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if (includesOnlyDigitsDiff) return includesOnlyDigitsDiff
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// transformed candidates receive higher priority
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const priorityDiff = this.priorities[a] - this.priorities[b]
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if (priorityDiff) return priorityDiff
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// if same priorirty, prefer candidates that are closer to the beginning (e.g. titles before subtitles)
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const positionDiff = this.positions[a] - this.positions[b]
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return positionDiff // candidates with same priority always have different positions
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})
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Logger.debug(`[${this.constructor.name}] Found ${candidates.length} fuzzy title candidates`)
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Logger.debug(candidates)
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return candidates
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}
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delete(title) {
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return this.candidates.delete(title)
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}
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#removeAuthorFromTitle(title) {
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if (!this.cleanAuthor) return title
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const authorRe = new RegExp(`(^| | by |)${escapeRegExp(this.cleanAuthor)}(?= |$)`, "g")
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const authorCleanedTitle = cleanAuthorForCompares(title)
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const authorCleanedTitleWithoutAuthor = authorCleanedTitle.replace(authorRe, '')
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if (authorCleanedTitleWithoutAuthor !== authorCleanedTitle) {
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return authorCleanedTitleWithoutAuthor.trim()
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}
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return title
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}
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}
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static AuthorCandidates = class {
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constructor(cleanAuthor, audnexus) {
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this.audnexus = audnexus
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this.candidates = new Set()
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this.cleanAuthor = cleanAuthor
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if (cleanAuthor) this.candidates.add(cleanAuthor)
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}
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validateAuthor(name, region = '', maxLevenshtein = 2) {
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return this.audnexus.authorASINsRequest(name, region).then((asins) => {
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for (const [i, asin] of asins.entries()) {
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if (i > 10) break
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let cleanName = cleanAuthorForCompares(asin.name)
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if (!cleanName) continue
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if (cleanName.includes(name)) return name
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if (name.includes(cleanName)) return cleanName
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if (levenshteinDistance(cleanName, name) <= maxLevenshtein) return cleanName
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}
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return ''
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})
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}
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add(author) {
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const cleanAuthor = cleanAuthorForCompares(author).trim()
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if (!cleanAuthor) return
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this.candidates.add(cleanAuthor)
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}
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get size() {
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return this.candidates.size
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}
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get agressivelyCleanAuthor() {
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if (this.cleanAuthor) {
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const agressivelyCleanAuthor = this.cleanAuthor.replace(/[,/-].*$/, '').trim()
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return agressivelyCleanAuthor ? agressivelyCleanAuthor : this.cleanAuthor
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}
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return ''
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}
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async getCandidates() {
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var filteredCandidates = []
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var promises = []
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for (const candidate of this.candidates) {
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promises.push(this.validateAuthor(candidate))
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}
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const results = [...new Set(await Promise.all(promises))]
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filteredCandidates = results.filter(author => author)
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// If no valid candidates were found, add back an aggresively cleaned author version
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if (!filteredCandidates.length && this.cleanAuthor) filteredCandidates.push(this.agressivelyCleanAuthor)
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// Always add an empty author candidate
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filteredCandidates.push('')
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Logger.debug(`[${this.constructor.name}] Found ${filteredCandidates.length} fuzzy author candidates`)
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Logger.debug(filteredCandidates)
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return filteredCandidates
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}
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delete(author) {
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return this.candidates.delete(author)
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}
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}
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/**
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* Search for books including fuzzy searches
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*
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* @param {string} provider
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* @param {string} title
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* @param {string} author
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* @param {string} isbn
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* @param {string} asin
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* @param {{titleDistance:number, authorDistance:number, maxFuzzySearches:number}} options
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* @returns {Promise<Object[]>}
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*/
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async search(provider, title, author, isbn, asin, options = {}) {
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let books = []
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const maxTitleDistance = !isNaN(options.titleDistance) ? Number(options.titleDistance) : 4
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const maxAuthorDistance = !isNaN(options.authorDistance) ? Number(options.authorDistance) : 4
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const maxFuzzySearches = !isNaN(options.maxFuzzySearches) ? Number(options.maxFuzzySearches) : 5
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let numFuzzySearches = 0
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if (!title)
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return books
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books = await this.runSearch(title, author, provider, asin, maxTitleDistance, maxAuthorDistance)
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if (!books.length && maxFuzzySearches > 0) {
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// Normalize title and author
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title = title.trim().toLowerCase()
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author = author?.trim().toLowerCase() || ''
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const cleanAuthor = cleanAuthorForCompares(author)
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// Now run up to maxFuzzySearches fuzzy searches
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let authorCandidates = new BookFinder.AuthorCandidates(cleanAuthor, this.audnexus)
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// Remove underscores and parentheses with their contents, and replace with a separator
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const cleanTitle = title.replace(/\[.*?\]|\(.*?\)|{.*?}|_/g, " - ")
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// Split title into hypen-separated parts
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const titleParts = cleanTitle.split(/ - | -|- /)
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for (const titlePart of titleParts)
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authorCandidates.add(titlePart)
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authorCandidates = await authorCandidates.getCandidates()
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for (const authorCandidate of authorCandidates) {
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let titleCandidates = new BookFinder.TitleCandidates(authorCandidate)
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for (const titlePart of titleParts)
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titleCandidates.add(titlePart)
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titleCandidates = titleCandidates.getCandidates()
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for (const titleCandidate of titleCandidates) {
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if (titleCandidate == title && authorCandidate == author) continue // We already tried this
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if (++numFuzzySearches > maxFuzzySearches) return books
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books = await this.runSearch(titleCandidate, authorCandidate, provider, asin, maxTitleDistance, maxAuthorDistance)
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if (books.length) return books
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}
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}
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}
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return books
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}
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/**
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* Search for books
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*
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* @param {string} title
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* @param {string} author
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* @param {string} provider
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* @param {string} asin only used for audible providers
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* @param {number} maxTitleDistance only used for openlibrary provider
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* @param {number} maxAuthorDistance only used for openlibrary provider
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* @returns {Promise<Object[]>}
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*/
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async runSearch(title, author, provider, asin, maxTitleDistance, maxAuthorDistance) {
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Logger.debug(`Book Search: title: "${title}", author: "${author || ''}", provider: ${provider}`)
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let books = []
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if (provider === 'google') {
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books = await this.getGoogleBooksResults(title, author)
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} else if (provider.startsWith('audible')) {
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books = await this.getAudibleResults(title, author, asin, provider)
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} else if (provider === 'itunes') {
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books = await this.getiTunesAudiobooksResults(title, author)
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} else if (provider === 'openlibrary') {
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books = await this.getOpenLibResults(title, author, maxTitleDistance, maxAuthorDistance)
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} else if (provider === 'fantlab') {
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books = await this.getFantLabResults(title, author)
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} else if (provider === 'audiobookcovers') {
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books = await this.getAudiobookCoversResults(title)
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}
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else {
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books = await this.getGoogleBooksResults(title, author)
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}
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return books
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}
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async findCovers(provider, title, author, options = {}) {
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let searchResults = []
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if (provider === 'all') {
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for (const providerString of this.providers) {
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const providerResults = await this.search(providerString, title, author, options)
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Logger.debug(`[BookFinder] Found ${providerResults.length} covers from ${providerString}`)
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searchResults.push(...providerResults)
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}
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} else {
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searchResults = await this.search(provider, title, author, options)
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}
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Logger.debug(`[BookFinder] FindCovers search results: ${searchResults.length}`)
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const covers = []
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searchResults.forEach((result) => {
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if (result.covers && result.covers.length) {
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covers.push(...result.covers)
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}
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if (result.cover) {
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covers.push(result.cover)
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}
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})
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return [...(new Set(covers))]
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}
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findChapters(asin, region) {
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return this.audnexus.getChaptersByASIN(asin, region)
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}
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}
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module.exports = new BookFinder()
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function stripSubtitle(title) {
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if (title.includes(':')) {
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return title.split(':')[0].trim()
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} else if (title.includes(' - ')) {
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return title.split(' - ')[0].trim()
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}
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return title
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}
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function replaceAccentedChars(str) {
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try {
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return str.normalize('NFD').replace(/[\u0300-\u036f]/g, "")
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} catch (error) {
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Logger.error('[BookFinder] str normalize error', error)
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return str
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}
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}
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function cleanTitleForCompares(title) {
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if (!title) return ''
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title = stripRedundantSpaces(title)
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// Remove subtitle if there (i.e. "Cool Book: Coolest Ever" becomes "Cool Book")
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let stripped = stripSubtitle(title)
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// Remove text in paranthesis (i.e. "Ender's Game (Ender's Saga)" becomes "Ender's Game")
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let cleaned = stripped.replace(/ *\([^)]*\) */g, "")
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// Remove single quotes (i.e. "Ender's Game" becomes "Enders Game")
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cleaned = cleaned.replace(/'/g, '')
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return replaceAccentedChars(cleaned).toLowerCase()
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}
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function cleanAuthorForCompares(author) {
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if (!author) return ''
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author = stripRedundantSpaces(author)
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let cleanAuthor = replaceAccentedChars(author).toLowerCase()
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// separate initials
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cleanAuthor = cleanAuthor.replace(/([a-z])\.([a-z])/g, '$1. $2')
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// remove middle initials
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cleanAuthor = cleanAuthor.replace(/(?<=\w\w)(\s+[a-z]\.?)+(?=\s+\w\w)/g, '')
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return cleanAuthor
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}
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function stripRedundantSpaces(str) {
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return str.replace(/\s+/g, ' ').trim()
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}
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