Add: experimental match tab with google books search #59, Add: isbn field for books #59

server/providers/GoogleBooks.js

@@ -0,0 +1,50 @@
+const axios = require('axios')
+const Logger = require('../Logger')
+
+class GoogleBooks {
+  constructor() { }
+
+  extractIsbn(industryIdentifiers) {
+    if (!industryIdentifiers || !industryIdentifiers.length) return null
+
+    var isbnObj = industryIdentifiers.find(i => i.type === 'ISBN_13') || industryIdentifiers.find(i => i.type === 'ISBN_10')
+    if (isbnObj && isbnObj.identifier) return isbnObj.identifier
+    return null
+  }
+
+  cleanResult(item) {
+    var { id, volumeInfo } = item
+    if (!volumeInfo) return null
+    var { title, subtitle, authors, publisher, publisherDate, description, industryIdentifiers, categories, imageLinks } = volumeInfo
+
+    return {
+      id,
+      title,
+      subtitle: subtitle || null,
+      author: authors ? authors.join(', ') : null,
+      publisher,
+      publishYear: publisherDate ? publisherDate.split('-')[0] : null,
+      description,
+      cover: imageLinks && imageLinks.thumbnail ? imageLinks.thumbnail : null,
+      genres: categories ? categories.join(', ') : null,
+      isbn: this.extractIsbn(industryIdentifiers)
+    }
+  }
+
+  async search(title, author) {
+    var queryString = `q=intitle:${title}`
+    if (author) queryString += `+inauthor:${author}`
+    var url = `https://www.googleapis.com/books/v1/volumes?${queryString}`
+    Logger.debug(`[GoogleBooks] Search url: ${url}`)
+    var items = await axios.get(url).then((res) => {
+      if (!res || !res.data || !res.data.items) return []
+      return res.data.items
+    }).catch(error => {
+      Logger.error('[GoogleBooks] Volume search error', error)
+      return []
+    })
+    return items.map(item => this.cleanResult(item))
+  }
+}
+
+module.exports = GoogleBooks