git.squeep.com Git - akkoma/blob - lib/pleroma/web/push/push.ex

   1 defmodule Pleroma.Web.Push do
   2   use GenServer
   3
   4   alias Pleroma.{Repo, User}
   5   alias Pleroma.Web.Push.Subscription
   6
   7   require Logger
   8   import Ecto.Query
   9
  10   @types ["Create", "Follow", "Announce", "Like"]
  11
  12   def start_link() do
  13     GenServer.start_link(__MODULE__, :ok, name: __MODULE__)
  14   end
  15
  16   def vapid_config() do
  17     Application.get_env(:web_push_encryption, :vapid_details, [])
  18   end
  19
  20   def enabled() do
  21     case vapid_config() do
  22       [] -> false
  23       list when is_list(list) -> true
  24       _ -> false
  25     end
  26   end
  27
  28   def send(notification) do
  29     if enabled() do
  30       GenServer.cast(Pleroma.Web.Push, {:send, notification})
  31     end
  32   end
  33
  34   def init(:ok) do
  35     if enabled() do
  36       Logger.warn("""
  37       VAPID key pair is not found. If you wish to enabled web push, please run
  38
  39           mix web_push.gen.keypair
  40
  41       and add the resulting output to your configuration file.
  42       """)
  43
  44       :ignore
  45     else
  46       {:ok, nil}
  47     end
  48   end
  49
  50   def handle_cast(
  51         {:send, %{activity: %{data: %{"type" => type}}, user_id: user_id} = notification},
  52         state
  53       )
  54       when type in @types do
  55     actor = User.get_cached_by_ap_id(notification.activity.data["actor"])
  56
  57     type = format_type(notification)
  58
  59     Subscription
  60     |> where(user_id: ^user_id)
  61     |> preload(:token)
  62     |> Repo.all()
  63     |> Enum.filter(fn subscription ->
  64       get_in(subscription.data, ["alerts", type]) || false
  65     end)
  66     |> Enum.each(fn subscription ->
  67       sub = %{
  68         keys: %{
  69           p256dh: subscription.key_p256dh,
  70           auth: subscription.key_auth
  71         },
  72         endpoint: subscription.endpoint
  73       }
  74
  75       body =
  76         Jason.encode!(%{
  77           title: format_title(notification),
  78           access_token: subscription.token.token,
  79           body: format_body(notification, actor),
  80           notification_id: notification.id,
  81           notification_type: type,
  82           icon: User.avatar_url(actor),
  83           preferred_locale: "en"
  84         })
  85
  86       case WebPushEncryption.send_web_push(
  87              body,
  88              sub,
  89              Application.get_env(:web_push_encryption, :gcm_api_key)
  90            ) do
  91         {:ok, %{status_code: code}} when 400 <= code and code < 500 ->
  92           Logger.debug("Removing subscription record")
  93           Repo.delete!(subscription)
  94           :ok
  95
  96         {:ok, %{status_code: code}} when 200 <= code and code < 300 ->
  97           :ok
  98
  99         {:ok, %{status_code: code}} ->
 100           Logger.error("Web Push Notification failed with code: #{code}")
 101           :error
 102
 103         _ ->
 104           Logger.error("Web Push Notification failed with unknown error")
 105           :error
 106       end
 107     end)
 108
 109     {:noreply, state}
 110   end
 111
 112   def handle_cast({:send, _}, state) do
 113     Logger.warn("Unknown notification type")
 114     {:noreply, state}
 115   end
 116
 117   # https://github.com/tootsuite/mastodon/blob/master/app/models/notification.rb#L19
 118   defp format_type(%{activity: %{data: %{"type" => type}}}) do
 119     case type do
 120       "Create" -> "mention"
 121       "Follow" -> "follow"
 122       "Announce" -> "reblog"
 123       "Like" -> "favourite"
 124     end
 125   end
 126
 127   defp format_title(%{activity: %{data: %{"type" => type}}}) do
 128     case type do
 129       "Create" -> "New Mention"
 130       "Follow" -> "New Follower"
 131       "Announce" -> "New Repeat"
 132       "Like" -> "New Favorite"
 133     end
 134   end
 135
 136   defp format_body(%{activity: %{data: %{"type" => type}}}, actor) do
 137     case type do
 138       "Create" -> "@#{actor.nickname} has mentioned you"
 139       "Follow" -> "@#{actor.nickname} has followed you"
 140       "Announce" -> "@#{actor.nickname} has repeated your post"
 141       "Like" -> "@#{actor.nickname} has favorited your post"
 142     end
 143   end
 144 end