moviewyrm/bookwyrm/outgoing.py

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''' handles all the activity coming out of the server '''
from datetime import datetime
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from django.db import IntegrityError, transaction
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from django.http import HttpResponseNotFound, JsonResponse
from django.views.decorators.csrf import csrf_exempt
import requests
from bookwyrm import activitypub
from bookwyrm import models
from bookwyrm.broadcast import broadcast
from bookwyrm.status import create_review, create_status
from bookwyrm.status import create_quotation, create_comment
from bookwyrm.status import create_tag, create_notification, create_rating
from bookwyrm.status import create_generated_note
from bookwyrm.remote_user import get_or_create_remote_user
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@csrf_exempt
def outbox(request, username):
''' outbox for the requested user '''
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if request.method != 'GET':
return HttpResponseNotFound()
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try:
user = models.User.objects.get(localname=username)
except models.User.DoesNotExist:
return HttpResponseNotFound()
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# collection overview
return JsonResponse(
user.to_outbox(**request.GET),
encoder=activitypub.ActivityEncoder
)
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def handle_account_search(query):
''' webfingerin' other servers '''
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user = None
domain = query.split('@')[1]
try:
user = models.User.objects.get(username=query)
except models.User.DoesNotExist:
url = 'https://%s/.well-known/webfinger?resource=acct:%s' % \
(domain, query)
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try:
response = requests.get(url)
except requests.exceptions.ConnectionError:
return None
if not response.ok:
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return None
data = response.json()
for link in data['links']:
if link['rel'] == 'self':
try:
user = get_or_create_remote_user(link['href'])
except KeyError:
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return None
return [user]
def handle_follow(user, to_follow):
''' someone local wants to follow someone '''
try:
relationship, _ = models.UserFollowRequest.objects.get_or_create(
user_subject=user,
user_object=to_follow,
)
except IntegrityError as err:
if err.__cause__.diag.constraint_name != 'userfollowrequest_unique':
raise
activity = relationship.to_activity()
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broadcast(user, activity, direct_recipients=[to_follow])
def handle_unfollow(user, to_unfollow):
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''' someone local wants to follow someone '''
relationship = models.UserFollows.objects.get(
user_subject=user,
user_object=to_unfollow
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)
activity = relationship.to_undo_activity(user)
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broadcast(user, activity, direct_recipients=[to_unfollow])
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to_unfollow.followers.remove(user)
def handle_accept(user, to_follow, follow_request):
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''' send an acceptance message to a follow request '''
with transaction.atomic():
relationship = models.UserFollows.from_request(follow_request)
follow_request.delete()
relationship.save()
activity = relationship.to_accept_activity()
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broadcast(to_follow, activity, privacy='direct', direct_recipients=[user])
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def handle_reject(user, to_follow, relationship):
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''' a local user who managed follows rejects a follow request '''
activity = relationship.to_reject_activity(user)
relationship.delete()
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broadcast(to_follow, activity, privacy='direct', direct_recipients=[user])
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def handle_shelve(user, book, shelf):
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''' a local user is getting a book put on their shelf '''
# update the database
shelve = models.ShelfBook(book=book, shelf=shelf, added_by=user)
shelve.save()
broadcast(user, shelve.to_add_activity(user))
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# tell the world about this cool thing that happened
message = {
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'to-read': 'wants to read',
'reading': 'started reading',
'read': 'finished reading'
}[shelf.identifier]
status = create_generated_note(user, message, mention_books=[book])
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status.save()
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if shelf.identifier == 'reading':
read = models.ReadThrough(
user=user,
book=book,
start_date=datetime.now())
read.save()
elif shelf.identifier == 'read':
read = models.ReadThrough.objects.filter(
user=user,
book=book,
finish_date=None).order_by('-created_date').first()
if not read:
read = models.ReadThrough(
user=user,
book=book,
start_date=datetime.now())
read.finish_date = datetime.now()
read.save()
broadcast(user, status.to_create_activity(user))
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def handle_unshelve(user, book, shelf):
''' a local user is getting a book put on their shelf '''
# update the database
row = models.ShelfBook.objects.get(book=book, shelf=shelf)
activity = row.to_remove_activity(user)
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row.delete()
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broadcast(user, activity)
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def handle_import_books(user, items):
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''' process a goodreads csv and then post about it '''
new_books = []
for item in items:
if item.shelf:
desired_shelf = models.Shelf.objects.get(
identifier=item.shelf,
user=user
)
if isinstance(item.book, models.Work):
item.book = item.book.default_edition
if not item.book:
continue
shelf_book, created = models.ShelfBook.objects.get_or_create(
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book=item.book, shelf=desired_shelf, added_by=user)
if created:
new_books.append(item.book)
activity = shelf_book.to_add_activity(user)
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broadcast(user, activity)
if item.rating or item.review:
review_title = "Review of {!r} on Goodreads".format(
item.book.title,
) if item.review else ""
handle_review(
user,
item.book,
review_title,
item.review,
item.rating,
)
for read in item.reads:
read.book = item.book
read.user = user
read.save()
if new_books:
message = 'imported {} books'.format(len(new_books))
status = create_generated_note(user, message, mention_books=new_books)
status.save()
broadcast(user, status.to_create_activity(user))
return status
return None
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def handle_rate(user, book, rating):
''' a review that's just a rating '''
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builder = create_rating
handle_status(user, book, builder, rating)
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def handle_review(user, book, name, content, rating):
''' post a review '''
# validated and saves the review in the database so it has an id
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builder = create_review
handle_status(user, book, builder, name, content, rating)
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def handle_quotation(user, book, content, quote):
''' post a review '''
# validated and saves the review in the database so it has an id
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builder = create_quotation
handle_status(user, book, builder, content, quote)
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def handle_comment(user, book, content):
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''' post a comment '''
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# validated and saves the review in the database so it has an id
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builder = create_comment
handle_status(user, book, builder, content)
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def handle_status(user, book_id, builder, *args):
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''' generic handler for statuses '''
book = models.Edition.objects.get(id=book_id)
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status = builder(user, book, *args)
broadcast(user, status.to_create_activity(user), software='bookwyrm')
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# re-format the activity for non-bookwyrm servers
remote_activity = status.to_create_activity(user, pure=True)
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broadcast(user, remote_activity, software='other')
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def handle_tag(user, book, name):
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''' tag a book '''
tag = create_tag(user, book, name)
broadcast(user, tag.to_add_activity(user))
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def handle_untag(user, book, name):
''' tag a book '''
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book = models.Book.objects.get(id=book)
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tag = models.Tag.objects.get(name=name, book=book, user=user)
tag_activity = tag.to_remove_activity(user)
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tag.delete()
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broadcast(user, tag_activity)
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def handle_reply(user, review, content):
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''' respond to a review or status '''
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# validated and saves the comment in the database so it has an id
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reply = create_status(user, content, reply_parent=review)
if reply.reply_parent:
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create_notification(
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reply.reply_parent.user,
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'REPLY',
related_user=user,
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related_status=reply,
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)
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broadcast(user, reply.to_create_activity(user))
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def handle_favorite(user, status):
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''' a user likes a status '''
try:
favorite = models.Favorite.objects.create(
status=status,
user=user
)
except IntegrityError:
# you already fav'ed that
return
fav_activity = favorite.to_activity()
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broadcast(
user, fav_activity, privacy='direct', direct_recipients=[status.user])
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def handle_unfavorite(user, status):
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''' a user likes a status '''
try:
favorite = models.Favorite.objects.get(
status=status,
user=user
)
except models.Favorite.DoesNotExist:
# can't find that status, idk
return
fav_activity = activitypub.Undo(actor=user, object=favorite)
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broadcast(user, fav_activity, direct_recipients=[status.user])
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def handle_boost(user, status):
''' a user wishes to boost a status '''
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if models.Boost.objects.filter(
boosted_status=status, user=user).exists():
# you already boosted that.
return
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boost = models.Boost.objects.create(
boosted_status=status,
user=user,
)
boost.save()
boost_activity = boost.to_activity()
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broadcast(user, boost_activity)
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def handle_update_book(user, book):
''' broadcast the news about our book '''
broadcast(user, book.to_update_activity(user))
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def handle_update_user(user):
''' broadcast editing a user's profile '''
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broadcast(user, user.to_update_activity(user))