moviewyrm/bookwyrm/outgoing.py
2020-11-01 10:49:28 -08:00

337 lines
10 KiB
Python

''' handles all the activity coming out of the server '''
from datetime import datetime
import re
from django.db import IntegrityError, transaction
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_tag, create_notification
from bookwyrm.status import create_generated_note
from bookwyrm.status import delete_status
from bookwyrm.remote_user import get_or_create_remote_user
from bookwyrm.settings import DOMAIN
from bookwyrm.utils import regex
@csrf_exempt
def outbox(request, username):
''' outbox for the requested user '''
if request.method != 'GET':
return HttpResponseNotFound()
try:
user = models.User.objects.get(localname=username)
except models.User.DoesNotExist:
return HttpResponseNotFound()
# collection overview
return JsonResponse(
user.to_outbox(**request.GET),
encoder=activitypub.ActivityEncoder
)
def handle_remote_webfinger(query):
''' webfingerin' other servers, username query should be user@domain '''
user = None
try:
domain = query.split('@')[2]
except IndexError:
return None
try:
user = models.User.objects.get(username=query)
except models.User.DoesNotExist:
url = 'https://%s/.well-known/webfinger?resource=acct:@%s' % \
(domain, query)
try:
response = requests.get(url)
except requests.exceptions.ConnectionError:
return None
if not response.ok:
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:
return None
return user
def handle_follow(user, to_follow):
''' someone local wants to follow someone '''
relationship, _ = models.UserFollowRequest.objects.get_or_create(
user_subject=user,
user_object=to_follow,
)
activity = relationship.to_activity()
broadcast(user, activity, privacy='direct', direct_recipients=[to_follow])
def handle_unfollow(user, to_unfollow):
''' someone local wants to follow someone '''
relationship = models.UserFollows.objects.get(
user_subject=user,
user_object=to_unfollow
)
activity = relationship.to_undo_activity(user)
broadcast(user, activity, privacy='direct', direct_recipients=[to_unfollow])
to_unfollow.followers.remove(user)
def handle_accept(follow_request):
''' send an acceptance message to a follow request '''
user = follow_request.user_subject
to_follow = follow_request.user_object
with transaction.atomic():
relationship = models.UserFollows.from_request(follow_request)
follow_request.delete()
relationship.save()
activity = relationship.to_accept_activity()
broadcast(to_follow, activity, privacy='direct', direct_recipients=[user])
def handle_reject(follow_request):
''' a local user who managed follows rejects a follow request '''
user = follow_request.user_subject
to_follow = follow_request.user_object
activity = follow_request.to_reject_activity()
follow_request.delete()
broadcast(to_follow, activity, privacy='direct', direct_recipients=[user])
def handle_shelve(user, book, shelf):
''' 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))
# tell the world about this cool thing that happened
try:
message = {
'to-read': 'wants to read',
'reading': 'started reading',
'read': 'finished reading'
}[shelf.identifier]
except KeyError:
# it's a non-standard shelf, don't worry about it
return
status = create_generated_note(user, message, mention_books=[book])
status.save()
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))
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)
row.delete()
broadcast(user, activity)
def handle_imported_book(user, item, include_reviews, privacy):
''' process a goodreads csv and then post about it '''
if isinstance(item.book, models.Work):
item.book = item.book.default_edition
if not item.book:
return
if item.shelf:
desired_shelf = models.Shelf.objects.get(
identifier=item.shelf,
user=user
)
# shelve the book if it hasn't been shelved already
shelf_book, created = models.ShelfBook.objects.get_or_create(
book=item.book, shelf=desired_shelf, added_by=user)
if created:
broadcast(user, shelf_book.to_add_activity(user), privacy=privacy)
# only add new read-throughs if the item isn't already shelved
for read in item.reads:
read.book = item.book
read.user = user
read.save()
if include_reviews and (item.rating or item.review):
review_title = 'Review of {!r} on Goodreads'.format(
item.book.title,
) if item.review else ''
# we don't know the publication date of the review,
# but "now" is a bad guess
published_date_guess = item.date_read or item.date_added
review = models.Review.objects.create(
user=user,
book=item.book,
name=review_title,
content=item.review,
rating=item.rating,
published_date=published_date_guess,
privacy=privacy,
)
# we don't need to send out pure activities because non-bookwyrm
# instances don't need this data
broadcast(user, review.to_create_activity(user), privacy=privacy)
def handle_delete_status(user, status):
''' delete a status and broadcast deletion to other servers '''
delete_status(status)
broadcast(user, status.to_delete_activity(user))
def handle_status(user, form):
''' generic handler for statuses '''
status = form.save()
# inspect the text for user tags
text = status.content
matches = re.finditer(
regex.username,
text
)
for match in matches:
username = match.group().strip().split('@')[1:]
if len(username) == 1:
# this looks like a local user (@user), fill in the domain
username.append(DOMAIN)
username = '@'.join(username)
mention_user = handle_remote_webfinger(username)
if not mention_user:
# we can ignore users we don't know about
continue
# add them to status mentions fk
status.mention_users.add(mention_user)
# create notification if the mentioned user is local
if mention_user.local:
create_notification(
mention_user,
'MENTION',
related_user=user,
related_status=status
)
status.save()
# notify reply parent or tagged users
if status.reply_parent and status.reply_parent.user.local:
create_notification(
status.reply_parent.user,
'REPLY',
related_user=user,
related_status=status
)
broadcast(user, status.to_create_activity(user), software='bookwyrm')
# re-format the activity for non-bookwyrm servers
if hasattr(status, 'pure_activity_serializer'):
remote_activity = status.to_create_activity(user, pure=True)
broadcast(user, remote_activity, software='other')
def handle_tag(user, book, name):
''' tag a book '''
tag = create_tag(user, book, name)
broadcast(user, tag.to_add_activity(user))
def handle_untag(user, book, name):
''' tag a book '''
book = models.Book.objects.get(id=book)
tag = models.Tag.objects.get(name=name, book=book, user=user)
tag_activity = tag.to_remove_activity(user)
tag.delete()
broadcast(user, tag_activity)
def handle_favorite(user, status):
''' 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()
broadcast(
user, fav_activity, privacy='direct', direct_recipients=[status.user])
def handle_unfavorite(user, status):
''' 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)
broadcast(user, fav_activity, direct_recipients=[status.user])
def handle_boost(user, status):
''' a user wishes to boost a status '''
if models.Boost.objects.filter(
boosted_status=status, user=user).exists():
# you already boosted that.
return
boost = models.Boost.objects.create(
boosted_status=status,
user=user,
)
boost.save()
boost_activity = boost.to_activity()
broadcast(user, boost_activity)
def handle_update_book(user, book):
''' broadcast the news about our book '''
broadcast(user, book.to_update_activity(user))
def handle_update_user(user):
''' broadcast editing a user's profile '''
broadcast(user, user.to_update_activity(user))