forked from mirrors/bookwyrm
138 lines
4.5 KiB
Python
138 lines
4.5 KiB
Python
''' openlibrary data connector '''
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from django.core.exceptions import ObjectDoesNotExist
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from django.core.files.base import ContentFile
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import re
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import requests
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from fedireads import models
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from .abstract_connector import AbstractConnector, SearchResult
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class OpenLibraryConnector(AbstractConnector):
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''' instantiate a connector for OL '''
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def __init__(self):
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super().__init__('openlibrary')
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def search(self, query):
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''' query openlibrary search '''
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resp = requests.get('%s/search.json' % self.url, params={'q': query})
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if not resp.ok:
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resp.raise_for_status()
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data = resp.json()
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results = []
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for doc in data['docs'][:5]:
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key = doc['key']
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key = key.split('/')[-1]
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author = doc.get('author_name') or ['Unknown']
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results.append(SearchResult(
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doc.get('title'),
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key,
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author[0],
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doc.get('first_publish_year'),
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))
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return results
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def get_or_create_book(self, olkey):
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''' pull up a book record by whatever means possible '''
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if re.match(r'^OL\d+W$', olkey):
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model = models.Work
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elif re.match(r'^OL\d+M$', olkey):
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model = models.Edition
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else:
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raise ValueError('Invalid OpenLibrary ID')
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try:
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book = models.Book.objects.get(openlibrary_key=olkey)
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return book
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except ObjectDoesNotExist:
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# no book was found, so we start creating a new one
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book = model(openlibrary_key=olkey)
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# load the book json from openlibrary.org
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response = requests.get('%s/works/%s.json' % (self.url, olkey))
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if not response.ok:
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response.raise_for_status()
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data = response.json()
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# great, we can update our book.
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book.title = data['title']
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description = data.get('description')
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if description:
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if isinstance(description, dict):
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description = description.get('value')
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book.description = description
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book.pages = data.get('pages')
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#book.published_date = data.get('publish_date')
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# this book sure as heck better be an edition
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if data.get('works'):
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key = data.get('works')[0]['key']
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key = key.split('/')[-1]
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work = self.get_or_create_book(key)
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book.parent_work = work
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book.save()
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# we also need to know the author get the cover
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for author_blob in data.get('authors'):
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# this id is "/authors/OL1234567A" and we want just "OL1234567A"
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author_blob = author_blob.get('author', author_blob)
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author_id = author_blob['key']
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author_id = author_id.split('/')[-1]
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book.authors.add(self.get_or_create_author(author_id))
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if data.get('covers') and len(data['covers']):
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book.cover.save(*self.get_cover(data['covers'][0]), save=True)
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return book
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def get_or_create_author(self, olkey):
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''' load that author '''
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if not re.match(r'^OL\d+A$', olkey):
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raise ValueError('Invalid OpenLibrary author ID')
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try:
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author = models.Author.objects.get(openlibrary_key=olkey)
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except ObjectDoesNotExist:
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pass
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response = requests.get('%s/authors/%s.json' % (self.url, olkey))
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if not response.ok:
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response.raise_for_status()
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data = response.json()
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author = models.Author(openlibrary_key=olkey)
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bio = data.get('bio')
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if bio:
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if isinstance(bio, dict):
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bio = bio.get('value')
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author.bio = bio
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name = data['name']
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author.name = name
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# TODO this is making some BOLD assumption
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author.last_name = name.split(' ')[-1]
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author.first_name = ' '.join(name.split(' ')[:-1])
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#author.born = data.get('birth_date')
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#author.died = data.get('death_date')
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author.save()
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return author
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def get_cover(self, cover_id):
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''' ask openlibrary for the cover '''
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# TODO: get medium and small versions
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image_name = '%s-M.jpg' % cover_id
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url = '%s/b/id/%s' % (self.covers_url, image_name)
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response = requests.get(url)
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if not response.ok:
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response.raise_for_status()
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image_content = ContentFile(requests.get(url).content)
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return [image_name, image_content]
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def update_book(self, book_obj):
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pass
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