bookwyrm/fedireads/openlibrary.py
2020-01-29 01:05:27 -08:00

91 lines
2.6 KiB
Python

''' activitystream api and books '''
from django.core.exceptions import ObjectDoesNotExist
from django.core.files.base import ContentFile
import requests
from fedireads.models import Author, Book
from fedireads.settings import OL_URL
def book_search(query):
''' look up a book '''
response = requests.get('%s/search.json' % OL_URL, params={'q': query})
if not response.ok:
response.raise_for_status()
data = response.json()
results = []
for doc in data['docs'][:5]:
key = doc['key'].split('/')[-1]
results.append({
'title': doc['title'],
'olkey': key,
'year': doc['first_publish_year'],
'author': doc['author_name'][0],
})
return results
def get_or_create_book(olkey, user=None, update=False):
''' add a book '''
# TODO: check if this is a valid open library key, and a book
olkey = olkey
# get the existing entry from our db, if it exists
try:
book = Book.objects.get(openlibrary_key=olkey)
if not update:
return book
# we have the book, but still want to update it from OL
except ObjectDoesNotExist:
# no book was found, so we start creating a new one
book = Book(openlibrary_key=olkey)
# load the book json from openlibrary.org
response = requests.get(OL_URL + olkey + '.json')
if not response.ok:
response.raise_for_status()
data = response.json()
book.data = data
if user and user.is_authenticated:
book.added_by = user
# great, we can update our book.
book.save()
# we also need to know the author get the cover
for author_blob in data['authors']:
author_id = author_blob['author']['key']
book.authors.add(get_or_create_author(author_id))
if len(data['covers']):
book.cover.save(*get_cover(data['covers'][0]), save=True)
return book
def get_cover(cover_id):
''' ask openlibrary for the cover '''
image_name = '%s-M.jpg' % cover_id
url = 'https://covers.openlibrary.org/b/id/%s' % image_name
response = requests.get(url)
if not response.ok:
response.raise_for_status()
image_content = ContentFile(requests.get(url).content)
return [image_name, image_content]
def get_or_create_author(olkey):
''' load that author '''
# TODO: validate that this is an author key
# TODO: error handling
try:
author = Author.objects.get(openlibrary_key=olkey)
except ObjectDoesNotExist:
response = requests.get(OL_URL + olkey + '.json')
data = response.json()
author = Author(openlibrary_key=olkey, data=data)
author.save()
return author