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