audiobookshelf/server/providers/OpenLibrary.js

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var axios = require('axios')
class OpenLibrary {
constructor() {
this.baseUrl = 'https://openlibrary.org'
}
get(uri) {
return axios.get(`${this.baseUrl}/${uri}`).then((res) => {
return res.data
}).catch((error) => {
console.error('Failed', error)
return false
})
}
async isbnLookup(isbn) {
var lookupData = await this.get(`/isbn/${isbn}`)
if (!lookupData) {
return {
errorCode: 404
}
}
return lookupData
}
async getWorksData(worksKey) {
var worksData = await this.get(`${worksKey}.json`)
if (!worksData) {
return {
errorMsg: 'Works Data Request failed',
errorCode: 500
}
}
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if (!worksData.covers) worksData.covers = []
var coverImages = worksData.covers.filter(c => c > 0).map(c => `https://covers.openlibrary.org/b/id/${c}-L.jpg`)
var description = null
if (worksData.description) {
if (typeof worksData.description === 'string') {
description = worksData.description
} else {
description = worksData.description.value || null
}
}
return {
id: worksKey.split('/').pop(),
key: worksKey,
covers: coverImages,
first_publish_date: worksData.first_publish_date,
description: description
}
}
parsePublishYear(doc, worksData) {
if (doc.first_publish_year && !isNaN(doc.first_publish_year)) return doc.first_publish_year
if (worksData.first_publish_date) {
var year = worksData.first_publish_date.split('-')[0]
if (!isNaN(year)) return year
}
return null
}
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async cleanSearchDoc(doc) {
var worksData = await this.getWorksData(doc.key)
return {
title: doc.title,
author: doc.author_name ? doc.author_name.join(', ') : null,
publishYear: this.parsePublishYear(doc, worksData),
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edition: doc.cover_edition_key,
cover: doc.cover_edition_key ? `https://covers.openlibrary.org/b/OLID/${doc.cover_edition_key}-L.jpg` : null,
...worksData
}
}
async search(query) {
var queryString = Object.keys(query).map(key => key + '=' + query[key]).join('&')
var lookupData = await this.get(`/search.json?${queryString}`)
if (!lookupData) {
return {
errorCode: 404
}
}
var searchDocs = await Promise.all(lookupData.docs.map(d => this.cleanSearchDoc(d)))
return searchDocs
}
async searchTitle(title) {
title = title.replace(/'/g, '')
var lookupData = await this.get(`/search.json?title=${title}`)
if (!lookupData) {
return {
errorCode: 404
}
}
var searchDocs = await Promise.all(lookupData.docs.map(d => this.cleanSearchDoc(d)))
return searchDocs
}
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}
module.exports = OpenLibrary