distraction.party/lib/pleroma/web/activity_pub/visibility.ex

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defmodule Pleroma.Web.ActivityPub.Visibility do
alias Pleroma.Activity
alias Pleroma.Object
alias Pleroma.User
def is_public?(%Object{data: %{"type" => "Tombstone"}}), do: false
def is_public?(%Object{data: data}), do: is_public?(data)
def is_public?(%Activity{data: data}), do: is_public?(data)
def is_public?(%{"directMessage" => true}), do: false
def is_public?(data) do
"https://www.w3.org/ns/activitystreams#Public" in (data["to"] ++ (data["cc"] || []))
end
def is_private?(activity) do
unless is_public?(activity) do
follower_address = User.get_cached_by_ap_id(activity.data["actor"]).follower_address
Enum.any?(activity.data["to"], &(&1 == follower_address))
else
false
end
end
def is_direct?(%Activity{data: %{"directMessage" => true}}), do: true
def is_direct?(%Object{data: %{"directMessage" => true}}), do: true
def is_direct?(activity) do
!is_public?(activity) && !is_private?(activity)
end
def visible_for_user?(activity, nil) do
is_public?(activity)
end
def visible_for_user?(activity, user) do
x = [user.ap_id | user.following]
y = [activity.actor] ++ activity.data["to"] ++ (activity.data["cc"] || [])
visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))
end
# guard
def entire_thread_visible_for_user?(nil, _user), do: false
# XXX: Probably even more inefficient than the previous implementation intended to be a placeholder untill https://git.pleroma.social/pleroma/pleroma/merge_requests/971 is in develop
# credo:disable-for-previous-line Credo.Check.Readability.MaxLineLength
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def entire_thread_visible_for_user?(
%Activity{} = tail,
# %Activity{data: %{"object" => %{"inReplyTo" => parent_id}}} = tail,
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user
) do
case Object.normalize(tail) do
%{data: %{"inReplyTo" => parent_id}} when is_binary(parent_id) ->
parent = Activity.get_in_reply_to_activity(tail)
visible_for_user?(tail, user) && entire_thread_visible_for_user?(parent, user)
_ ->
visible_for_user?(tail, user)
end
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end
end