defmodule Pleroma.Web.Push do use GenServer alias Pleroma.{Repo, User} alias Pleroma.Web.Push.Subscription require Logger import Ecto.Query @types ["Create", "Follow", "Announce", "Like"] def start_link() do GenServer.start_link(__MODULE__, :ok, name: __MODULE__) end def vapid_config() do Application.get_env(:web_push_encryption, :vapid_details, []) end def enabled() do case vapid_config() do [] -> false list when is_list(list) -> true _ -> false end end def send(notification) do if enabled() do GenServer.cast(Pleroma.Web.Push, {:send, notification}) end end def init(:ok) do if enabled() do Logger.warn(""" VAPID key pair is not found. If you wish to enabled web push, please run mix web_push.gen.keypair and add the resulting output to your configuration file. """) :ignore else {:ok, nil} end end def handle_cast( {:send, %{activity: %{data: %{"type" => type}}, user_id: user_id} = notification}, state ) when type in @types do actor = User.get_cached_by_ap_id(notification.activity.data["actor"]) type = format_type(notification) Subscription |> where(user_id: ^user_id) |> preload(:token) |> Repo.all() |> Enum.filter(fn subscription -> get_in(subscription.data, ["alerts", type]) || false end) |> Enum.each(fn subscription -> sub = %{ keys: %{ p256dh: subscription.key_p256dh, auth: subscription.key_auth }, endpoint: subscription.endpoint } body = Jason.encode!(%{ title: format_title(notification), access_token: subscription.token.token, body: format_body(notification, actor), notification_id: notification.id, notification_type: type, icon: User.avatar_url(actor), preferred_locale: "en" }) case WebPushEncryption.send_web_push( body, sub, Application.get_env(:web_push_encryption, :gcm_api_key) ) do {:ok, %{status_code: code}} when 400 <= code and code < 500 -> Logger.debug("Removing subscription record") Repo.delete!(subscription) :ok {:ok, %{status_code: code}} when 200 <= code and code < 300 -> :ok {:ok, %{status_code: code}} -> Logger.error("Web Push Notification failed with code: #{code}") :error _ -> Logger.error("Web Push Notification failed with unknown error") :error end end) {:noreply, state} end def handle_cast({:send, _}, state) do Logger.warn("Unknown notification type") {:noreply, state} end # https://github.com/tootsuite/mastodon/blob/master/app/models/notification.rb#L19 defp format_type(%{activity: %{data: %{"type" => type}}}) do case type do "Create" -> "mention" "Follow" -> "follow" "Announce" -> "reblog" "Like" -> "favourite" end end defp format_title(%{activity: %{data: %{"type" => type}}}) do case type do "Create" -> "New Mention" "Follow" -> "New Follower" "Announce" -> "New Repeat" "Like" -> "New Favorite" end end defp format_body(%{activity: %{data: %{"type" => type}}}, actor) do case type do "Create" -> "@#{actor.nickname} has mentioned you" "Follow" -> "@#{actor.nickname} has followed you" "Announce" -> "@#{actor.nickname} has repeated your post" "Like" -> "@#{actor.nickname} has favorited your post" end end end