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# Pleroma: A lightweight social networking server
# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Repo.Migrations.RemoveUnreadConversationCountFromUser do
use Ecto.Migration
import Ecto.Query
alias Pleroma.Repo
def up do
alter table(:users) do
remove_if_exists(:unread_conversation_count, :integer)
end
end
def down do
alter table(:users) do
add_if_not_exists(:unread_conversation_count, :integer, default: 0)
end
flush()
recalc_unread_conversation_count()
end
defp recalc_unread_conversation_count do
participations_subquery =
from(
p in "conversation_participations",
where: p.read == false,
group_by: p.user_id,
select: %{user_id: p.user_id, unread_conversation_count: count(p.id)}
)
from(
u in "users",
join: p in subquery(participations_subquery),
on: p.user_id == u.id,
update: [set: [unread_conversation_count: p.unread_conversation_count]]
)
|> Repo.update_all([])
end
end
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