117 lines
3.4 KiB
Elixir
117 lines
3.4 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Repo.Migrations.FixBlockedFollows do
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use Ecto.Migration
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import Ecto.Query
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alias Pleroma.Config
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alias Pleroma.Repo
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def up do
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unfollow_blocked = Config.get([:activitypub, :unfollow_blocked])
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if unfollow_blocked do
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"activities"
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|> where([activity], fragment("? ->> 'type' = 'Block'", activity.data))
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|> distinct([activity], [
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activity.actor,
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fragment(
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"coalesce((?)->'object'->>'id', (?)->>'object')",
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activity.data,
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activity.data
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)
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])
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|> order_by([activity], [fragment("? desc nulls last", activity.id)])
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|> select([activity], %{
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blocker: activity.actor,
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blocked:
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fragment("coalesce((?)->'object'->>'id', (?)->>'object')", activity.data, activity.data),
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created_at: activity.id
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})
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|> Repo.stream()
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|> Enum.map(&unfollow_if_blocked/1)
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|> Enum.uniq()
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|> Enum.each(&update_follower_count/1)
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end
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end
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def down do
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end
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def unfollow_if_blocked(%{blocker: blocker_id, blocked: blocked_id, created_at: blocked_at}) do
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query =
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from(
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activity in "activities",
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where: fragment("? ->> 'type' = 'Follow'", activity.data),
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where: activity.actor == ^blocked_id,
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# this is to use the index
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where:
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fragment(
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"coalesce((?)->'object'->>'id', (?)->>'object') = ?",
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activity.data,
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activity.data,
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^blocker_id
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),
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where: activity.id > ^blocked_at,
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where: fragment("(?)->>'state' = 'accept'", activity.data),
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order_by: [fragment("? desc nulls last", activity.id)]
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)
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unless Repo.exists?(query) do
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blocker = "users" |> select([:id, :local]) |> Repo.get_by(ap_id: blocker_id)
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blocked = "users" |> select([:id]) |> Repo.get_by(ap_id: blocked_id)
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if !is_nil(blocker) && !is_nil(blocked) do
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unfollow(blocked, blocker)
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end
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end
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end
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def unfollow(%{id: follower_id}, %{id: followed_id} = followed) do
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following_relationship =
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"following_relationships"
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|> where(follower_id: ^follower_id, following_id: ^followed_id, state: "accept")
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|> select([:id])
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|> Repo.one()
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case following_relationship do
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nil ->
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{:ok, nil}
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%{id: following_relationship_id} ->
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"following_relationships"
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|> where(id: ^following_relationship_id)
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|> Repo.delete_all()
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followed
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end
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end
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def update_follower_count(%{id: user_id} = user) do
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if user.local or !Pleroma.Config.get([:instance, :external_user_synchronization]) do
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follower_count_query =
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"users"
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|> where([u], u.id != ^user_id)
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|> where([u], u.deactivated != ^true)
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|> join(:inner, [u], r in "following_relationships",
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as: :relationships,
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on: r.following_id == ^user_id and r.follower_id == u.id
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)
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|> where([relationships: r], r.state == "accept")
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|> select([u], %{count: count(u.id)})
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"users"
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|> where(id: ^user_id)
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|> join(:inner, [u], s in subquery(follower_count_query))
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|> update([u, s],
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set: [follower_count: s.count]
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)
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|> Repo.update_all([])
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end
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end
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def update_follower_count(_), do: :noop
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end
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