forked from potsda.mn/mobilizon
61 lines
1.9 KiB
Elixir
61 lines
1.9 KiB
Elixir
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defmodule Mobilizon.Service.CleanOrphanMedia do
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@moduledoc """
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Service to clean orphan media
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"""
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alias Mobilizon.Actors.Actor
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alias Mobilizon.Medias
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alias Mobilizon.Medias.Media
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alias Mobilizon.Storage.Repo
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import Ecto.Query
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@grace_period Mobilizon.Config.get([:instance, :orphan_upload_grace_period_hours], 48)
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@doc """
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Clean orphan media
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Remove media that is not attached to an entity, such as media uploads that were never used in entities.
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Options:
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* `grace_period` how old in hours can the media be before it's taken into account for deletion
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* `dry_run` just return the media that would have been deleted, don't actually delete it
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"""
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@spec clean(Keyword.t()) :: {:ok, list(Media.t())} | {:error, String.t()}
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def clean(opts \\ []) do
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medias = find_media(opts)
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if Keyword.get(opts, :dry_run, false) do
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{:ok, medias}
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else
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Enum.each(medias, fn media ->
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Medias.delete_media(media, ignore_file_not_found: true)
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end)
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{:ok, medias}
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end
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end
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@spec find_media(Keyword.t()) :: list(Media.t())
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defp find_media(opts) do
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grace_period = Keyword.get(opts, :grace_period, @grace_period)
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expiration_date = DateTime.add(DateTime.utc_now(), grace_period * -3600)
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Media
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|> where([m], m.inserted_at < ^expiration_date)
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|> join(:inner, [m], a in Actor)
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|> where([_m, a], is_nil(a.domain))
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|> join(:left, [m], e in assoc(m, :events))
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|> join(:left, [m], ep in assoc(m, :event_picture))
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|> join(:left, [m], p in assoc(m, :posts))
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|> join(:left, [m], pp in assoc(m, :posts_picture))
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|> join(:left, [m], c in assoc(m, :comments))
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|> where([_m, _a, e], is_nil(e.id))
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|> where([_m, _a, _e, ep], is_nil(ep.id))
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|> where([_m, _a, _e, _ep, p], is_nil(p.id))
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|> where([_m, _a, _e, _ep, _p, pp], is_nil(pp.id))
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|> where([_m, _a, _e, _ep, _p, _pp, c], is_nil(c.id))
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|> distinct(true)
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|> Repo.all()
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end
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end
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