# Pleroma: A lightweight social networking server # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/> # SPDX-License-Identifier: AGPL-3.0-only defmodule Pleroma.Web.Push.Impl do @moduledoc "The module represents implementation push web notification" alias Pleroma.Activity alias Pleroma.Notification alias Pleroma.Object alias Pleroma.Repo alias Pleroma.User alias Pleroma.Web.Metadata.Utils alias Pleroma.Web.Push.Subscription require Logger import Ecto.Query @types ["Create", "Follow", "Announce", "Like"] @doc "Performs sending notifications for user subscriptions" @spec perform(Notification.t()) :: list(any) | :error def perform( %{ activity: %{data: %{"type" => activity_type}, id: activity_id} = activity, user_id: user_id } = notif ) when activity_type in @types do actor = User.get_cached_by_ap_id(notif.activity.data["actor"]) type = Activity.mastodon_notification_type(notif.activity) gcm_api_key = Application.get_env(:web_push_encryption, :gcm_api_key) avatar_url = User.avatar_url(actor) object = Object.normalize(activity) for subscription <- fetch_subsriptions(user_id), get_in(subscription.data, ["alerts", type]) do %{ title: format_title(notif), access_token: subscription.token.token, body: format_body(notif, actor, object), notification_id: notif.id, notification_type: type, icon: avatar_url, preferred_locale: "en", pleroma: %{ activity_id: activity_id } } |> Jason.encode!() |> push_message(build_sub(subscription), gcm_api_key, subscription) end end def perform(_) do Logger.warn("Unknown notification type") :error end @doc "Push message to web" def push_message(body, sub, api_key, subscription) do case WebPushEncryption.send_web_push(body, sub, 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 @doc "Gets user subscriptions" def fetch_subsriptions(user_id) do Subscription |> where(user_id: ^user_id) |> preload(:token) |> Repo.all() end def build_sub(subscription) do %{ keys: %{ p256dh: subscription.key_p256dh, auth: subscription.key_auth }, endpoint: subscription.endpoint } end def format_body( %{activity: %{data: %{"type" => "Create"}}}, actor, %{data: %{"content" => content}} ) do "@#{actor.nickname}: #{Utils.scrub_html_and_truncate(content, 80)}" end def format_body( %{activity: %{data: %{"type" => "Announce"}}}, actor, %{data: %{"content" => content}} ) do "@#{actor.nickname} repeated: #{Utils.scrub_html_and_truncate(content, 80)}" end def format_body( %{activity: %{data: %{"type" => type}}}, actor, _object ) when type in ["Follow", "Like"] do case type do "Follow" -> "@#{actor.nickname} has followed you" "Like" -> "@#{actor.nickname} has favorited your post" end end def format_title(%{activity: %{data: %{"type" => type}}}) do case type do "Create" -> "New Mention" "Follow" -> "New Follower" "Announce" -> "New Repeat" "Like" -> "New Favorite" end end end