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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.MigrationHelper.NotificationBackfill do
   6   alias Pleroma.Object
   7   alias Pleroma.Repo
   8   alias Pleroma.User
   9
  10   import Ecto.Query
  11
  12   def fill_in_notification_types do
  13     query =
  14       from(n in Pleroma.Notification,
  15         where: is_nil(n.type),
  16         preload: :activity
  17       )
  18
  19     query
  20     |> Repo.chunk_stream(100)
  21     |> Enum.each(fn notification ->
  22       if notification.activity do
  23         type = type_from_activity(notification.activity)
  24
  25         notification
  26         |> Ecto.Changeset.change(%{type: type})
  27         |> Repo.update()
  28       end
  29     end)
  30   end
  31
  32   defp get_by_ap_id(ap_id) do
  33     q =
  34       from(u in User,
  35         select: u.id
  36       )
  37
  38     Repo.get_by(q, ap_id: ap_id)
  39   end
  40
  41   # This is copied over from Notifications to keep this stable.
  42   defp type_from_activity(%{data: %{"type" => type}} = activity) do
  43     case type do
  44       "Follow" ->
  45         accepted_function = fn activity ->
  46           with %User{} = follower <- get_by_ap_id(activity.data["actor"]),
  47                %User{} = followed <- get_by_ap_id(activity.data["object"]) do
  48             Pleroma.FollowingRelationship.following?(follower, followed)
  49           end
  50         end
  51
  52         if accepted_function.(activity) do
  53           "follow"
  54         else
  55           "follow_request"
  56         end
  57
  58       "Announce" ->
  59         "reblog"
  60
  61       "Like" ->
  62         "favourite"
  63
  64       "Move" ->
  65         "move"
  66
  67       "EmojiReact" ->
  68         "pleroma:emoji_reaction"
  69
  70       # Compatibility with old reactions
  71       "EmojiReaction" ->
  72         "pleroma:emoji_reaction"
  73
  74       "Create" ->
  75         type_from_activity_object(activity)
  76
  77       t ->
  78         raise "No notification type for activity type #{t}"
  79     end
  80   end
  81
  82   defp type_from_activity_object(%{data: %{"type" => "Create", "object" => %{}}}), do: "mention"
  83
  84   defp type_from_activity_object(%{data: %{"type" => "Create"}} = activity) do
  85     object = Object.get_by_ap_id(activity.data["object"])
  86
  87     case object && object.data["type"] do
  88       "ChatMessage" -> "pleroma:chat_mention"
  89       _ -> "mention"
  90     end
  91   end
  92 end