forked from AkkomaGang/akkoma
77 lines
2.3 KiB
Elixir
77 lines
2.3 KiB
Elixir
defmodule Pleroma.Web.ActivityPub.MRF.FollowBotPolicy do
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@behaviour Pleroma.Web.ActivityPub.MRF
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alias Pleroma.Activity.Queries
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alias Pleroma.Config
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alias Pleroma.Repo
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alias Pleroma.User
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alias Pleroma.Web.CommonAPI
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require Logger
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import Ecto.Query
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@impl true
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def filter(message) do
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with follower_nickname <- Config.get([:mrf_follow_bot, :follower_nickname]),
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%User{actor_type: "Service"} = follower <-
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User.get_cached_by_nickname(follower_nickname),
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%{"type" => "Create", "object" => %{"type" => "Note"}} <- message do
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try_follow(follower, message)
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else
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nil ->
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Logger.warn(
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"#{__MODULE__} skipped because of missing `:mrf_follow_bot, :follower_nickname` configuration, the :follower_nickname
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account does not exist, or the account is not correctly configured as a bot."
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)
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{:ok, message}
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_ ->
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{:ok, message}
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end
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end
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defp try_follow(follower, message) do
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Task.start(fn ->
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to = Map.get(message, "to", [])
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cc = Map.get(message, "cc", [])
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actor = [message["actor"]]
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Enum.concat([to, cc, actor])
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|> List.flatten()
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|> Enum.uniq()
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|> User.get_all_by_ap_id()
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|> Enum.each(fn user ->
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since_thirty_days_ago = NaiveDateTime.utc_now() |> NaiveDateTime.add(-(86_400 * 30))
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with false <- User.following?(follower, user),
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false <- User.locked?(user),
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false <- (user.bio || "") |> String.downcase() |> String.contains?("nobot"),
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false <- outstanding_follow_request_since?(follower, user, since_thirty_days_ago) do
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Logger.info("#{__MODULE__}: Follow request from #{follower.nickname} to #{user.nickname}")
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CommonAPI.follow(follower, user)
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end
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end)
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end)
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{:ok, message}
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end
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defp outstanding_follow_request_since?(
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%User{ap_id: follower_id},
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%User{ap_id: followee_id},
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since_datetime
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) do
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followee_id
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|> Queries.by_object_id()
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|> Queries.by_type("Follow")
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|> where([a], a.inserted_at > ^since_datetime)
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|> where([a], fragment("? ->> 'state' = 'pending'", a.data))
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|> where([a], a.actor == ^follower_id)
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|> Repo.exists?()
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end
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@impl true
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def describe do
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{:ok, %{}}
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end
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end
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