forked from mirrors/bookwyrm
163 lines
5 KiB
Python
163 lines
5 KiB
Python
''' using another fedireads instance as a source of book data '''
|
|
import requests
|
|
|
|
from django.core.exceptions import ObjectDoesNotExist
|
|
from django.core.files.base import ContentFile
|
|
from django.db import transaction
|
|
|
|
from fedireads import models
|
|
from .abstract_connector import AbstractConnector, SearchResult, get_date
|
|
from .abstract_connector import match_from_mappings, update_from_mappings
|
|
|
|
|
|
class Connector(AbstractConnector):
|
|
''' interact with other instances '''
|
|
def __init__(self, identifier):
|
|
self.key_mappings = {
|
|
'isbn_13': ('isbn_13', None),
|
|
'isbn_10': ('isbn_10', None),
|
|
'oclc_numbers': ('oclc_number', None),
|
|
'lccn': ('lccn', None),
|
|
}
|
|
super().__init__(identifier)
|
|
|
|
|
|
def format_search_result(self, search_result):
|
|
return SearchResult(**search_result)
|
|
|
|
|
|
def get_or_create_book(self, remote_id):
|
|
''' pull up a book record by whatever means possible '''
|
|
book = models.Book.objects.select_subclasses().filter(
|
|
remote_id=remote_id
|
|
).first()
|
|
if book:
|
|
if isinstance(book, models.Work):
|
|
return book.default_edition
|
|
return book
|
|
|
|
# no book was found, so we start creating a new one
|
|
response = requests.get(
|
|
remote_id,
|
|
headers={
|
|
'Accept': 'application/activity+json; charset=utf-8',
|
|
},
|
|
)
|
|
if not response.ok:
|
|
response.raise_for_status()
|
|
data = response.json()
|
|
|
|
if data['book_type'] == 'work':
|
|
work_data = data
|
|
try:
|
|
edition_data = data['editions'][0]
|
|
except KeyError:
|
|
# hack: re-use the work data as the edition data
|
|
edition_data = data
|
|
else:
|
|
edition_data = data
|
|
try:
|
|
work_data = data['work']
|
|
except KeyError:
|
|
# hack: re-use the work data as the edition data
|
|
work_data = data
|
|
|
|
with transaction.atomic():
|
|
# create both work and a default edition
|
|
work_key = edition_data.get('url')
|
|
work = self.create_book(work_key, work_data, models.Work)
|
|
|
|
ed_key = edition_data.get('url')
|
|
edition = self.create_book(ed_key, edition_data, models.Edition)
|
|
edition.default = True
|
|
edition.parent_work = work
|
|
edition.save()
|
|
|
|
print(work, edition)
|
|
return edition
|
|
|
|
|
|
def update_book(self, book, data=None):
|
|
''' add remote data to a local book '''
|
|
if not data:
|
|
response = requests.get(
|
|
book.remote_id,
|
|
headers={
|
|
'Accept': 'application/activity+json; charset=utf-8',
|
|
},
|
|
)
|
|
if not response.ok:
|
|
response.raise_for_status()
|
|
|
|
data = response.json()
|
|
|
|
match = match_from_mappings(data, {})
|
|
if match:
|
|
return match
|
|
|
|
# great, we can update our book.
|
|
mappings = {
|
|
'published_date': ('published_date', get_date),
|
|
'first_published_date': ('first_published_date', get_date),
|
|
}
|
|
book = update_from_mappings(book, data, mappings)
|
|
|
|
if not book.remote_id:
|
|
book.remote_id = response.url
|
|
if not book.connector:
|
|
book.connector = self.connector
|
|
book.save()
|
|
|
|
if data.get('parent_work'):
|
|
work = self.get_or_create_book(data.get('parent_work'))
|
|
book.parent_work = work
|
|
|
|
for author_blob in data.get('authors', []):
|
|
author_blob = author_blob.get('author', author_blob)
|
|
author_id = author_blob['key']
|
|
author_id = author_id.split('/')[-1]
|
|
book.authors.add(self.get_or_create_author(author_id))
|
|
|
|
if book.sync_cover and data.get('covers') and data['covers']:
|
|
book.cover.save(*get_cover(data['covers'][0]), save=True)
|
|
|
|
return book
|
|
|
|
|
|
def get_or_create_author(self, remote_id):
|
|
''' load that author '''
|
|
try:
|
|
return models.Author.objects.get(remote_id=remote_id)
|
|
except ObjectDoesNotExist:
|
|
pass
|
|
|
|
resp = requests.get('%s/authors/%s.json' % (self.url, remote_id))
|
|
if not resp.ok:
|
|
resp.raise_for_status()
|
|
|
|
data = resp.json()
|
|
|
|
# ingest a new author
|
|
author = models.Author(remote_id=remote_id)
|
|
mappings = {
|
|
'born': ('born', get_date),
|
|
'died': ('died', get_date),
|
|
}
|
|
author = update_from_mappings(author, data, mappings)
|
|
author.save()
|
|
|
|
return author
|
|
|
|
|
|
def expand_book_data(self, book):
|
|
pass
|
|
|
|
|
|
def get_cover(cover_url):
|
|
''' ask openlibrary for the cover '''
|
|
image_name = cover_url.split('/')[-1]
|
|
response = requests.get(cover_url)
|
|
if not response.ok:
|
|
response.raise_for_status()
|
|
image_content = ContentFile(response.content)
|
|
return [image_name, image_content]
|