bookwyrm/fedireads/status.py

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''' Handle user activity '''
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from django.db import IntegrityError
from fedireads import models
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from fedireads.books_manager import get_or_create_book
from fedireads.sanitize_html import InputHtmlParser
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def create_review_from_activity(author, activity):
''' parse an activity json blob into a status '''
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book_id = activity['inReplyToBook']
book_id = book_id.split('/')[-1]
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name = activity.get('name')
rating = activity.get('rating')
content = activity.get('content')
published = activity.get('published')
remote_id = activity['id']
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book = get_or_create_book(book_id)
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review = create_review(author, book, name, content, rating)
review.published_date = published
review.remote_id = remote_id
review.save()
return review
def create_review(user, book, name, content, rating):
''' a book review has been added '''
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content = sanitize(content)
# no ratings outside of 0-5
try:
rating = int(rating)
rating = rating if 1 <= rating <= 5 else None
except ValueError:
rating = None
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return models.Review.objects.create(
user=user,
book=book,
name=name,
rating=rating,
content=content,
)
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def create_comment_from_activity(author, activity):
''' parse an activity json blob into a status '''
book = activity['inReplyToBook']
book = book.split('/')[-1]
content = activity.get('content')
published = activity.get('published')
remote_id = activity['id']
comment = create_comment(author, book, content)
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comment.published_date = published
comment.remote_id = remote_id
comment.save()
return comment
def create_comment(user, possible_book, content):
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''' a book comment has been added '''
# throws a value error if the book is not found
book = get_or_create_book(possible_book)
content = sanitize(content)
return models.Comment.objects.create(
user=user,
book=book,
content=content,
)
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def create_status_from_activity(author, activity):
''' parse a status object out of an activity json blob '''
content = activity.get('content')
reply_parent_id = activity.get('inReplyTo')
reply_parent = get_status(reply_parent_id)
remote_id = activity['id']
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if models.Status.objects.filter(remote_id=remote_id).count():
return None
status = create_status(author, content, reply_parent=reply_parent,
remote_id=remote_id)
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status.published_date = activity.get('published')
status.save()
return status
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def create_favorite_from_activity(user, activity):
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''' create a new favorite entry '''
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status = get_status(activity['object'])
remote_id = activity['id']
try:
return models.Favorite.objects.create(
status=status,
user=user,
remote_id=remote_id,
)
except IntegrityError:
return models.Favorite.objects.get(status=status, user=user)
def create_boost_from_activity(user, activity):
''' create a new boost activity '''
status = get_status(activity['object'])
remote_id = activity['id']
try:
return models.Boost.objects.create(
status=status,
user=user,
remote_id=remote_id,
)
except IntegrityError:
return models.Boost.objects.get(status=status, user=user)
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def get_status(absolute_id):
''' find a status in the database '''
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return get_by_absolute_id(absolute_id, models.Status)
def get_favorite(absolute_id):
''' find a status in the database '''
return get_by_absolute_id(absolute_id, models.Favorite)
def get_by_absolute_id(absolute_id, model):
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''' generalized function to get from a model with a remote_id field '''
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if not absolute_id:
return None
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# check if it's a remote status
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try:
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return model.objects.get(remote_id=absolute_id)
except model.DoesNotExist:
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pass
# try finding a local status with that id
local_id = absolute_id.split('/')[-1]
try:
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if hasattr(model.objects, 'select_subclasses'):
possible_match = model.objects.select_subclasses().get(id=local_id)
else:
possible_match = model.objects.get(id=local_id)
except model.DoesNotExist:
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return None
# make sure it's not actually a remote status with an id that
# clashes with a local id
if possible_match.absolute_id == absolute_id:
return possible_match
return None
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def create_status(user, content, reply_parent=None, mention_books=None,
remote_id=None):
''' a status update '''
# TODO: handle @'ing users
# sanitize input html
parser = InputHtmlParser()
parser.feed(content)
content = parser.get_output()
status = models.Status.objects.create(
user=user,
content=content,
reply_parent=reply_parent,
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remote_id=remote_id,
)
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if mention_books:
for book in mention_books:
status.mention_books.add(book)
return status
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def create_tag(user, possible_book, name):
''' add a tag to a book '''
book = get_or_create_book(possible_book)
try:
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tag = models.Tag.objects.create(name=name, book=book, user=user)
except IntegrityError:
return models.Tag.objects.get(name=name, book=book, user=user)
return tag
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def create_notification(user, notification_type, related_user=None, \
related_book=None, related_status=None):
''' let a user know when someone interacts with their content '''
if user == related_user:
# don't create notification when you interact with your own stuff
return
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models.Notification.objects.create(
user=user,
related_book=related_book,
related_user=related_user,
related_status=related_status,
notification_type=notification_type,
)
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def sanitize(content):
''' remove invalid html from free text '''
parser = InputHtmlParser()
parser.feed(content)
return parser.get_output()