forked from mirrors/bookwyrm
221 lines
8 KiB
Python
221 lines
8 KiB
Python
""" openlibrary data connector """
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import re
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from bookwyrm import models
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from .abstract_connector import AbstractConnector, SearchResult, Mapping
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from .abstract_connector import get_data
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from .connector_manager import ConnectorException
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from .openlibrary_languages import languages
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class Connector(AbstractConnector):
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""" instantiate a connector for OL """
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def __init__(self, identifier):
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super().__init__(identifier)
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get_first = lambda a, *args: a[0]
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get_remote_id = lambda a, *args: self.base_url + a
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self.book_mappings = [
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Mapping("title"),
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Mapping("id", remote_field="key", formatter=get_remote_id),
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Mapping("cover", remote_field="covers", formatter=self.get_cover_url),
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Mapping("sortTitle", remote_field="sort_title"),
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Mapping("subtitle"),
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Mapping("description", formatter=get_description),
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Mapping("languages", formatter=get_languages),
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Mapping("series", formatter=get_first),
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Mapping("seriesNumber", remote_field="series_number"),
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Mapping("subjects"),
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Mapping("subjectPlaces", remote_field="subject_places"),
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Mapping("isbn13", remote_field="isbn_13", formatter=get_first),
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Mapping("isbn10", remote_field="isbn_10", formatter=get_first),
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Mapping("lccn", formatter=get_first),
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Mapping("oclcNumber", remote_field="oclc_numbers", formatter=get_first),
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Mapping(
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"openlibraryKey", remote_field="key", formatter=get_openlibrary_key
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),
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Mapping("goodreadsKey", remote_field="goodreads_key"),
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Mapping("asin"),
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Mapping(
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"firstPublishedDate",
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remote_field="first_publish_date",
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),
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Mapping("publishedDate", remote_field="publish_date"),
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Mapping("pages", remote_field="number_of_pages"),
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Mapping("physicalFormat", remote_field="physical_format"),
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Mapping("publishers"),
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]
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self.author_mappings = [
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Mapping("id", remote_field="key", formatter=get_remote_id),
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Mapping("name"),
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Mapping(
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"openlibraryKey", remote_field="key", formatter=get_openlibrary_key
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),
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Mapping("born", remote_field="birth_date"),
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Mapping("died", remote_field="death_date"),
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Mapping("bio", formatter=get_description),
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]
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def get_remote_id_from_data(self, data):
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""" format a url from an openlibrary id field """
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try:
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key = data["key"]
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except KeyError:
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raise ConnectorException("Invalid book data")
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return "%s%s" % (self.books_url, key)
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def is_work_data(self, data):
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return bool(re.match(r"^[\/\w]+OL\d+W$", data["key"]))
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def get_edition_from_work_data(self, data):
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try:
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key = data["key"]
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except KeyError:
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raise ConnectorException("Invalid book data")
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url = "%s%s/editions" % (self.books_url, key)
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data = get_data(url)
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return pick_default_edition(data["entries"])
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def get_work_from_edition_data(self, data):
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try:
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key = data["works"][0]["key"]
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except (IndexError, KeyError):
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raise ConnectorException("No work found for edition")
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url = "%s%s" % (self.books_url, key)
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return get_data(url)
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def get_authors_from_data(self, data):
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""" parse author json and load or create authors """
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for author_blob in data.get("authors", []):
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author_blob = author_blob.get("author", author_blob)
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# this id is "/authors/OL1234567A"
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author_id = author_blob["key"]
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url = "%s%s" % (self.base_url, author_id)
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yield self.get_or_create_author(url)
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def get_cover_url(self, cover_blob, *_, size="L"):
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""" ask openlibrary for the cover """
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if not cover_blob:
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return None
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cover_id = cover_blob[0]
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image_name = "%s-%s.jpg" % (cover_id, size)
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return "%s/b/id/%s" % (self.covers_url, image_name)
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def parse_search_data(self, data):
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return data.get("docs")
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def format_search_result(self, search_result):
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# build the remote id from the openlibrary key
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key = self.books_url + search_result["key"]
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author = search_result.get("author_name") or ["Unknown"]
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cover_blob = search_result.get("cover_i")
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cover = self.get_cover_url([cover_blob], size="M") if cover_blob else None
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return SearchResult(
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title=search_result.get("title"),
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key=key,
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author=", ".join(author),
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connector=self,
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year=search_result.get("first_publish_year"),
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cover=cover,
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)
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def parse_isbn_search_data(self, data):
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return list(data.values())
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def format_isbn_search_result(self, search_result):
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# build the remote id from the openlibrary key
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key = self.books_url + search_result["key"]
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authors = search_result.get("authors") or [{"name": "Unknown"}]
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author_names = [author.get("name") for author in authors]
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return SearchResult(
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title=search_result.get("title"),
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key=key,
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author=", ".join(author_names),
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connector=self,
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year=search_result.get("publish_date"),
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)
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def load_edition_data(self, olkey):
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""" query openlibrary for editions of a work """
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url = "%s/works/%s/editions" % (self.books_url, olkey)
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return get_data(url)
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def expand_book_data(self, book):
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work = book
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# go from the edition to the work, if necessary
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if isinstance(book, models.Edition):
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work = book.parent_work
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# we can mass download edition data from OL to avoid repeatedly querying
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try:
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edition_options = self.load_edition_data(work.openlibrary_key)
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except ConnectorException:
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# who knows, man
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return
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for edition_data in edition_options.get("entries"):
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# does this edition have ANY interesting data?
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if ignore_edition(edition_data):
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continue
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self.create_edition_from_data(work, edition_data)
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def ignore_edition(edition_data):
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""" don't load a million editions that have no metadata """
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# an isbn, we love to see it
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if edition_data.get("isbn_13") or edition_data.get("isbn_10"):
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return False
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# grudgingly, oclc can stay
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if edition_data.get("oclc_numbers"):
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return False
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# if it has a cover it can stay
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if edition_data.get("covers"):
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return False
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# keep non-english editions
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if edition_data.get("languages") and "languages/eng" not in str(
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edition_data.get("languages")
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):
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return False
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return True
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def get_description(description_blob, *_):
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""" descriptions can be a string or a dict """
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if isinstance(description_blob, dict):
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return description_blob.get("value")
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return description_blob
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def get_openlibrary_key(key, *_):
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""" convert /books/OL27320736M into OL27320736M """
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return key.split("/")[-1]
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def get_languages(language_blob, *_):
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""" /language/eng -> English """
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langs = []
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for lang in language_blob:
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langs.append(languages.get(lang.get("key", ""), None))
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return langs
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def pick_default_edition(options, *_):
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""" favor physical copies with covers in english """
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if not options:
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return None
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if len(options) == 1:
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return options[0]
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options = [e for e in options if e.get("covers")] or options
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options = [
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e for e in options if "/languages/eng" in str(e.get("languages"))
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] or options
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formats = ["paperback", "hardcover", "mass market paperback"]
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options = [
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e for e in options if str(e.get("physical_format")).lower() in formats
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] or options
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options = [e for e in options if e.get("isbn_13")] or options
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options = [e for e in options if e.get("ocaid")] or options
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return options[0]
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