bookwyrm/fedireads/outgoing.py

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''' handles all the activity coming out of the server '''
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
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from urllib.parse import urlencode
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from fedireads import activitypub
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from fedireads import models
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from fedireads.status import create_review, create_status, create_tag, \
create_notification
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from fedireads.remote_user import get_or_create_remote_user
from fedireads.broadcast import get_recipients, broadcast
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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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# paginated list of messages
if request.GET.get('page'):
limit = 20
min_id = request.GET.get('min_id')
max_id = request.GET.get('max_id')
# filters for use in the django queryset min/max
filters = {}
# params for the outbox page id
params = {'page': 'true'}
if min_id != None:
params['min_id'] = min_id
filters['id__gt'] = min_id
if max_id != None:
params['max_id'] = max_id
filters['id__lte'] = max_id
page_id = user.outbox + '?' + urlencode(params)
statuses = models.Status.objects.filter(
user=user,
**filters
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).select_subclasses().all()[:limit]
return JsonResponse(
activitypub.get_outbox_page(user, page_id, statuses, max_id, min_id)
)
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# collection overview
size = models.Status.objects.filter(user=user).count()
return JsonResponse(activitypub.get_outbox(user, size))
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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)
response = requests.get(url)
if not response.ok:
response.raise_for_status()
data = response.json()
for link in data['links']:
if link['rel'] == 'self':
try:
user = get_or_create_remote_user(link['href'])
except KeyError:
return HttpResponseNotFound()
return user
def handle_outgoing_follow(user, to_follow):
''' someone local wants to follow someone '''
activity = activitypub.get_follow_request(user, to_follow)
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errors = broadcast(user, activity, [to_follow.inbox])
for error in errors:
raise(error['error'])
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def handle_outgoing_unfollow(user, to_unfollow):
''' someone local wants to follow someone '''
relationship = models.UserFollows.objects.get(
user_subject=user,
user_object=to_unfollow
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)
activity = activitypub.get_unfollow(relationship)
errors = broadcast(user, activity, [to_unfollow.inbox])
to_unfollow.followers.remove(user)
for error in errors:
raise(error['error'])
def handle_outgoing_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 = activitypub.get_accept(to_follow, follow_request)
recipient = get_recipients(to_follow, 'direct', direct_recipients=[user])
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broadcast(to_follow, activity, recipient)
def handle_outgoing_reject(user, to_follow, relationship):
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''' a local user who managed follows rejects a follow request '''
relationship.delete()
activity = activitypub.get_reject(to_follow, relationship)
recipient = get_recipients(to_follow, 'direct', direct_recipients=[user])
broadcast(to_follow, activity, recipient)
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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
models.ShelfBook(book=book, shelf=shelf, added_by=user).save()
activity = activitypub.get_add(user, book, shelf)
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recipients = get_recipients(user, 'public')
broadcast(user, activity, recipients)
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# tell the world about this cool thing that happened
verb = {
'to-read': 'wants to read',
'reading': 'started reading',
'read': 'finished reading'
}[shelf.identifier]
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message = '%s %s' % (verb, book.title)
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status = create_status(user, message, mention_books=[book])
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status.status_type = 'Update'
status.save()
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activity = activitypub.get_status(status)
create_activity = activitypub.get_create(user, activity)
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broadcast(user, create_activity, recipients)
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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)
row.delete()
activity = activitypub.get_remove(user, book, shelf)
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recipients = get_recipients(user, 'public')
broadcast(user, activity, recipients)
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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review = create_review(user, book, name, content, rating)
review_activity = activitypub.get_review(review)
review_create_activity = activitypub.get_create(user, review_activity)
fr_recipients = get_recipients(user, 'public', limit='fedireads')
broadcast(user, review_create_activity, fr_recipients)
# re-format the activity for non-fedireads servers
article_activity = activitypub.get_review_article(review)
article_create_activity = activitypub.get_create(user, article_activity)
other_recipients = get_recipients(user, 'public', limit='other')
broadcast(user, article_create_activity, other_recipients)
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def handle_tag(user, book, name):
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''' tag a book '''
tag = create_tag(user, book, name)
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tag_activity = activitypub.get_add_tag(tag)
recipients = get_recipients(user, 'public')
broadcast(user, tag_activity, recipients)
def handle_untag(user, book, name):
''' tag a book '''
book = models.Book.objects.get(openlibrary_key=book)
tag = models.Tag.objects.get(name=name, book=book, user=user)
tag_activity = activitypub.get_remove_tag(tag)
tag.delete()
recipients = get_recipients(user, 'public')
broadcast(user, tag_activity, recipients)
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def handle_comment(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
comment = create_status(user, content, reply_parent=review)
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if comment.reply_parent:
create_notification(
comment.reply_parent.user,
'REPLY',
related_user=user,
related_status=comment,
)
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comment_activity = activitypub.get_status(comment)
create_activity = activitypub.get_create(user, comment_activity)
recipients = get_recipients(user, 'public')
broadcast(user, create_activity, recipients)
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def handle_outgoing_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
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fav_activity = activitypub.get_favorite(favorite)
recipients = get_recipients(user, 'direct', [status.user])
broadcast(user, fav_activity, recipients)
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def handle_outgoing_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.get_unfavorite(favorite)
recipients = get_recipients(user, 'direct', [status.user])
broadcast(user, fav_activity, recipients)