ActivityPub serialize book

fedireads/activitypub/__init__.py

@@ -1,6 +1,6 @@
 ''' bring activitypub functions into the namespace '''
 from .actor import get_actor
-from .book import get_book, get_book_list
+from .book import get_book
 from .create import get_create
 from .follow import get_following, get_followers
 from .follow import get_follow_request, get_unfollow, get_accept, get_reject

fedireads/activitypub/book.py

@@ -0,0 +1,56 @@
+''' federate book data '''
+from fedireads.settings import DOMAIN
+
+def get_book(book):
+    ''' activitypub serialize a book '''
+
+    activity = {
+        '@context': 'https://www.w3.org/ns/activitystreams',
+        'type': 'Document',
+        'book_type': type(book).__name__,
+        'name': book.title,
+        'url': book.absolute_id,
+
+        'sort_title': book.sort_title,
+        'subtitle': book.subtitle,
+
+        'openlibrary_key': book.openlibrary_key,
+        'librarything_key': book.librarything_key,
+        'fedireads_key': book.fedireads_key,
+        'misc_identifiers': book.misc_identifiers,
+
+        'source_url': book.source_url,
+        'sync': book.sync,
+        'last_sync_date': book.last_sync_date,
+
+        'description': book.description,
+        'language': book.language,
+        'series': book.series,
+        'series_number': book.series_number,
+        'first_published_date': book.first_published_date.isoformat() if \
+                book.first_published_date else None,
+        'published_date': book.published_date.isoformat() if \
+                book.published_date else None,
+        'parent_work': book.parent_work.absolute_id if \
+                book.parent_work else None,
+        'authors': [get_author(a) for a in book.authors.all()],
+    }
+
+    if book.cover:
+        image_path = book.cover.url
+        image_type = image_path.split('.')[-1]
+        activity['attachment'] = [{
+            'type': 'Document',
+            'mediaType': 'image/%s' % image_type,
+            'url': 'https://%s%s' % (DOMAIN, image_path),
+            'name': 'Cover of "%s"' % book.title,
+        }]
+        return {k: v for (k, v) in activity.items() if v}
+
+
+def get_author(author):
+    ''' serialize an author '''
+    return {
+        'name': author.name,
+        'url': author.absolute_id,
+    }