microblog.pub/utils/notifications.py
2019-07-29 22:46:53 +02:00

133 lines
4.1 KiB
Python

import logging
from functools import singledispatch
from typing import Any
from typing import Dict
from little_boxes import activitypub as ap
from config import BASE_URL
from config import DB
from config import MetaKey
from config import _meta
from tasks import Tasks
from utils.meta import by_actor
from utils.meta import by_type
from utils.meta import in_inbox
from utils.meta import not_undo
_logger = logging.getLogger(__name__)
_NewMeta = Dict[str, Any]
def _is_from_outbox(activity: ap.BaseActivity) -> bool:
return activity.id.startswith(BASE_URL)
def _flag_as_notification(activity: ap.BaseActivity, new_meta: _NewMeta) -> None:
new_meta.update(
{_meta(MetaKey.NOTIFICATION): True, _meta(MetaKey.NOTIFICATION_UNREAD): True}
)
return None
@singledispatch
def set_inbox_flags(activity: ap.BaseActivity, new_meta: _NewMeta) -> None:
return None
@set_inbox_flags.register
def _accept_set_inbox_flags(activity: ap.Accept, new_meta: _NewMeta) -> None:
"""Handle notifications for "accepted" following requests."""
_logger.info(f"set_inbox_flags activity={activity!r}")
# Check if this actor already follow us back
follows_back = False
follow_query = {
**in_inbox(),
**by_type(ap.ActivityType.FOLLOW),
**by_actor(activity.get_actor()),
**not_undo(),
}
raw_follow = DB.activities.find_one(follow_query)
if raw_follow:
follows_back = True
DB.activities.update_many(
follow_query, {"$set": {_meta(MetaKey.NOTIFICATION_FOLLOWS_BACK): True}}
)
# This Accept will be a "You started following $actor" notification
_flag_as_notification(activity, new_meta)
new_meta.update({_meta(MetaKey.NOTIFICATION_FOLLOWS_BACK): follows_back})
return None
@set_inbox_flags.register
def _follow_set_inbox_flags(activity: ap.Follow, new_meta: _NewMeta) -> None:
"""Handle notification for new followers."""
# Check if we're already following this actor
follows_back = False
accept_query = {
**in_inbox(),
**by_type(ap.ActivityType.ACCEPT),
**by_actor(activity.get_actor()),
**not_undo(),
}
raw_accept = DB.activities.find_one(accept_query)
if raw_accept:
follows_back = True
DB.activities.update_many(
accept_query, {"$set": {_meta(MetaKey.NOTIFICATION_FOLLOWS_BACK): True}}
)
# This Follow will be a "$actor started following you" notification
_flag_as_notification(activity, new_meta)
new_meta.update({_meta(MetaKey.NOTIFICATION_FOLLOWS_BACK): follows_back})
return None
@set_inbox_flags.register
def _like_set_inbox_flags(activity: ap.Like, new_meta: _NewMeta) -> None:
# Is it a Like of local acitivty/from the outbox
if _is_from_outbox(activity.get_object()):
# Flag it as a notification
_flag_as_notification(activity, new_meta)
# Cache the object (for display on the notifcation page)
Tasks.cache_object(activity.id)
# Also set the "keep mark" for the GC (as we want to keep it forever)
new_meta.update({_meta(MetaKey.GC_KEEP): True})
return None
@set_inbox_flags.register
def _announce_set_inbox_flags(activity: ap.Announce, new_meta: _NewMeta) -> None:
# Is it a Like of local acitivty/from the outbox
if _is_from_outbox(activity.get_object()):
# Flag it as a notification
_flag_as_notification(activity, new_meta)
# Also set the "keep mark" for the GC (as we want to keep it forever)
new_meta.update({_meta(MetaKey.GC_KEEP): True})
# Cache the object in all case (for display on the notifcation page **and** the stream page)
Tasks.cache_object(activity.id)
return None
@set_inbox_flags.register
def _undo_set_inbox_flags(activity: ap.Undo, new_meta: _NewMeta) -> None:
obj = activity.get_object()
if obj.has_type(ap.ActivityType.FOLLOW):
# Flag it as a noticiation (for the "$actor unfollowed you"
_flag_as_notification(activity, new_meta)
# Also set the "keep mark" for the GC (as we want to keep it forever)
new_meta.update({_meta(MetaKey.GC_KEEP): True})
return None