mirror of
https://git.pleroma.social/pleroma/pleroma.git
synced 2024-09-08 20:58:28 +00:00
149 lines
5.8 KiB
Elixir
149 lines
5.8 KiB
Elixir
defmodule Pleroma.Repo.Migrations.CreateFollowingRelationships do
|
|
use Ecto.Migration
|
|
|
|
def change do
|
|
create_if_not_exists table(:following_relationships) do
|
|
add(:follower_id, references(:users, type: :uuid, on_delete: :delete_all), null: false)
|
|
add(:following_id, references(:users, type: :uuid, on_delete: :delete_all), null: false)
|
|
add(:state, :string, null: false)
|
|
|
|
timestamps()
|
|
end
|
|
|
|
create_if_not_exists(index(:following_relationships, :follower_id))
|
|
create_if_not_exists(unique_index(:following_relationships, [:follower_id, :following_id]))
|
|
|
|
execute(update_thread_visibility(), restore_thread_visibility())
|
|
end
|
|
|
|
# The only difference between the original version: `actor_user` replaced with `actor_user_following`
|
|
def update_thread_visibility do
|
|
"""
|
|
CREATE OR REPLACE FUNCTION thread_visibility(actor varchar, activity_id varchar) RETURNS boolean AS $$
|
|
DECLARE
|
|
public varchar := 'https://www.w3.org/ns/activitystreams#Public';
|
|
child objects%ROWTYPE;
|
|
activity activities%ROWTYPE;
|
|
author_fa varchar;
|
|
valid_recipients varchar[];
|
|
actor_user_following varchar[];
|
|
BEGIN
|
|
--- Fetch actor following
|
|
SELECT array_agg(following.follower_address) INTO actor_user_following FROM following_relationships
|
|
JOIN users ON users.id = following_relationships.follower_id
|
|
JOIN users AS following ON following.id = following_relationships.following_id
|
|
WHERE users.ap_id = actor;
|
|
|
|
--- Fetch our initial activity.
|
|
SELECT * INTO activity FROM activities WHERE activities.data->>'id' = activity_id;
|
|
|
|
LOOP
|
|
--- Ensure that we have an activity before continuing.
|
|
--- If we don't, the thread is not satisfiable.
|
|
IF activity IS NULL THEN
|
|
RETURN false;
|
|
END IF;
|
|
|
|
--- We only care about Create activities.
|
|
IF activity.data->>'type' != 'Create' THEN
|
|
RETURN true;
|
|
END IF;
|
|
|
|
--- Normalize the child object into child.
|
|
SELECT * INTO child FROM objects
|
|
INNER JOIN activities ON COALESCE(activities.data->'object'->>'id', activities.data->>'object') = objects.data->>'id'
|
|
WHERE COALESCE(activity.data->'object'->>'id', activity.data->>'object') = objects.data->>'id';
|
|
|
|
--- Fetch the author's AS2 following collection.
|
|
SELECT COALESCE(users.follower_address, '') INTO author_fa FROM users WHERE users.ap_id = activity.actor;
|
|
|
|
--- Prepare valid recipients array.
|
|
valid_recipients := ARRAY[actor, public];
|
|
IF ARRAY[author_fa] && actor_user_following THEN
|
|
valid_recipients := valid_recipients || author_fa;
|
|
END IF;
|
|
|
|
--- Check visibility.
|
|
IF NOT valid_recipients && activity.recipients THEN
|
|
--- activity not visible, break out of the loop
|
|
RETURN false;
|
|
END IF;
|
|
|
|
--- If there's a parent, load it and do this all over again.
|
|
IF (child.data->'inReplyTo' IS NOT NULL) AND (child.data->'inReplyTo' != 'null'::jsonb) THEN
|
|
SELECT * INTO activity FROM activities
|
|
INNER JOIN objects ON COALESCE(activities.data->'object'->>'id', activities.data->>'object') = objects.data->>'id'
|
|
WHERE child.data->>'inReplyTo' = objects.data->>'id';
|
|
ELSE
|
|
RETURN true;
|
|
END IF;
|
|
END LOOP;
|
|
END;
|
|
$$ LANGUAGE plpgsql IMMUTABLE;
|
|
"""
|
|
end
|
|
|
|
# priv/repo/migrations/20190515222404_add_thread_visibility_function.exs
|
|
def restore_thread_visibility do
|
|
"""
|
|
CREATE OR REPLACE FUNCTION thread_visibility(actor varchar, activity_id varchar) RETURNS boolean AS $$
|
|
DECLARE
|
|
public varchar := 'https://www.w3.org/ns/activitystreams#Public';
|
|
child objects%ROWTYPE;
|
|
activity activities%ROWTYPE;
|
|
actor_user users%ROWTYPE;
|
|
author_fa varchar;
|
|
valid_recipients varchar[];
|
|
BEGIN
|
|
--- Fetch our actor.
|
|
SELECT * INTO actor_user FROM users WHERE users.ap_id = actor;
|
|
|
|
--- Fetch our initial activity.
|
|
SELECT * INTO activity FROM activities WHERE activities.data->>'id' = activity_id;
|
|
|
|
LOOP
|
|
--- Ensure that we have an activity before continuing.
|
|
--- If we don't, the thread is not satisfiable.
|
|
IF activity IS NULL THEN
|
|
RETURN false;
|
|
END IF;
|
|
|
|
--- We only care about Create activities.
|
|
IF activity.data->>'type' != 'Create' THEN
|
|
RETURN true;
|
|
END IF;
|
|
|
|
--- Normalize the child object into child.
|
|
SELECT * INTO child FROM objects
|
|
INNER JOIN activities ON COALESCE(activities.data->'object'->>'id', activities.data->>'object') = objects.data->>'id'
|
|
WHERE COALESCE(activity.data->'object'->>'id', activity.data->>'object') = objects.data->>'id';
|
|
|
|
--- Fetch the author's AS2 following collection.
|
|
SELECT COALESCE(users.follower_address, '') INTO author_fa FROM users WHERE users.ap_id = activity.actor;
|
|
|
|
--- Prepare valid recipients array.
|
|
valid_recipients := ARRAY[actor, public];
|
|
IF ARRAY[author_fa] && actor_user.following THEN
|
|
valid_recipients := valid_recipients || author_fa;
|
|
END IF;
|
|
|
|
--- Check visibility.
|
|
IF NOT valid_recipients && activity.recipients THEN
|
|
--- activity not visible, break out of the loop
|
|
RETURN false;
|
|
END IF;
|
|
|
|
--- If there's a parent, load it and do this all over again.
|
|
IF (child.data->'inReplyTo' IS NOT NULL) AND (child.data->'inReplyTo' != 'null'::jsonb) THEN
|
|
SELECT * INTO activity FROM activities
|
|
INNER JOIN objects ON COALESCE(activities.data->'object'->>'id', activities.data->>'object') = objects.data->>'id'
|
|
WHERE child.data->>'inReplyTo' = objects.data->>'id';
|
|
ELSE
|
|
RETURN true;
|
|
END IF;
|
|
END LOOP;
|
|
END;
|
|
$$ LANGUAGE plpgsql IMMUTABLE;
|
|
"""
|
|
end
|
|
end
|