purge_expired_filter.ex
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purge_expired_filter.ex
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	# Pleroma: A lightweight social networking server
	# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
	# SPDX-License-Identifier: AGPL-3.0-only

	defmodule Pleroma.Workers.PurgeExpiredFilter do
	@moduledoc """
	Worker which purges expired filters
	"""

	use Oban.Worker, queue: :filter_expiration, max_attempts: 1, unique: [period: :infinity]

	import Ecto.Query

	alias Oban.Job
	alias Pleroma.Repo

	@spec enqueue(%{filter_id: integer(), expires_at: DateTime.t()}) ::
	{:ok, Job.t()} \| {:error, Ecto.Changeset.t()}
	def enqueue(args) do
	{scheduled_at, args} = Map.pop(args, :expires_at)

	args
	\|> new(scheduled_at: scheduled_at)
	\|> Oban.insert()
	end

	@impl true
	def perform(%Job{args: %{"filter_id" => id}}) do
	Pleroma.Filter
	\|> Repo.get(id)
	\|> Repo.delete()
	end

	@impl Oban.Worker
	def timeout(_job), do: :timer.seconds(5)

	@spec get_expiration(pos_integer()) :: Job.t() \| nil
	def get_expiration(id) do
	from(j in Job,
	where: j.state == "scheduled",
	where: j.queue == "filter_expiration",
	where: fragment("?->'filter_id' = ?", j.args, ^id)
	)
	\|> Repo.one()
	end
	end