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Add:Podcast iTunes search api and iTunes provider
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advplyr
parent
2a4cbd48b8
commit
43f48b65f8
7 changed files with 81 additions and 14 deletions
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@ -1,222 +0,0 @@
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const OpenLibrary = require('./providers/OpenLibrary')
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const LibGen = require('./providers/LibGen')
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const GoogleBooks = require('./providers/GoogleBooks')
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const Audible = require('./providers/Audible')
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const Logger = require('./Logger')
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const { levenshteinDistance } = 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.libGen = new LibGen()
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this.googleBooks = new GoogleBooks()
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this.audible = new Audible()
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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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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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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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cleanTitleForCompares(title) {
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if (!title) return ''
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// Remove subtitle if there (i.e. "Cool Book: Coolest Ever" becomes "Cool Book")
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var stripped = this.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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var 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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cleaned = this.replaceAccentedChars(cleaned)
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return cleaned.toLowerCase()
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}
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cleanAuthorForCompares(author) {
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if (!author) return ''
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var cleaned = this.replaceAccentedChars(author)
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return cleaned.toLowerCase()
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}
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filterSearchResults(books, title, author, maxTitleDistance, maxAuthorDistance) {
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var searchTitle = this.cleanTitleForCompares(title)
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var searchAuthor = this.cleanAuthorForCompares(author)
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return books.map(b => {
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b.cleanedTitle = this.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 = this.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 getLibGenResults(title, author, maxTitleDistance, maxAuthorDistance) {
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var books = await this.libGen.search(title)
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if (this.verbose) Logger.debug(`LibGen Book Search Results: ${books.length || 0}`)
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if (books.errorCode) {
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Logger.error(`LibGen 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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return booksFiltered
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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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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 getAudibleResults(title, author) {
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var books = await this.audible.search(title, author);
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if (this.verbose) Logger.debug(`Audible Book Search Results: ${books.length || 0}`)
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if (!books) return []
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return books
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}
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async search(provider, title, author, options = {}) {
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var books = []
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var maxTitleDistance = !isNaN(options.titleDistance) ? Number(options.titleDistance) : 4
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var maxAuthorDistance = !isNaN(options.authorDistance) ? Number(options.authorDistance) : 4
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Logger.debug(`Book Search: title: "${title}", author: "${author}", provider: ${provider}`)
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if (provider === 'google') {
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return this.getGoogleBooksResults(title, author)
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} else if (provider === 'audible') {
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return this.getAudibleResults(title, author)
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} else if (provider === 'libgen') {
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books = await this.getLibGenResults(title, author, maxTitleDistance, maxAuthorDistance)
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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 === 'all') {
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var lbBooks = await this.getLibGenResults(title, author, maxTitleDistance, maxAuthorDistance)
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var olBooks = await this.getOpenLibResults(title, author, maxTitleDistance, maxAuthorDistance)
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books = books.concat(lbBooks, olBooks)
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} else {
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books = await this.getOpenLibResults(title, author, maxTitleDistance, maxAuthorDistance)
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var hasCloseMatch = books.find(b => (b.totalDistance < 2 && b.totalPossibleDistance > 6))
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if (!hasCloseMatch) {
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Logger.debug(`Book Search, openlib has no super close matches - get libgen results also`)
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var lbBooks = await this.getLibGenResults(title, author, maxTitleDistance, maxAuthorDistance)
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books = books.concat(lbBooks)
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}
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if (!books.length && author && options.fallbackTitleOnly) {
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Logger.debug(`Book Search, no matches for title and author.. check title only`)
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return this.search(provider, title, null, options)
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}
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}
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return books.sort((a, b) => {
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return a.totalDistance - b.totalDistance
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})
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}
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async findCovers(provider, title, author, options = {}) {
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var searchResults = await this.search(provider, title, author, options)
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Logger.debug(`[BookFinder] FindCovers search results: ${searchResults.length}`)
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var covers = []
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searchResults.forEach((result) => {
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if (result.covers && result.covers.length) {
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covers = covers.concat(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 covers
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}
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}
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module.exports = BookFinder
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