git.squeep.com Git - akkoma/blob - lib/pleroma/web/ostatus/handlers/note_handler.ex

   1 defmodule Pleroma.Web.OStatus.NoteHandler do
   2   require Logger
   3   alias Pleroma.Web.{XML, OStatus}
   4   alias Pleroma.{Object, User, Activity}
   5   alias Pleroma.Web.ActivityPub.ActivityPub
   6   alias Pleroma.Web.ActivityPub.Utils
   7   alias Pleroma.Web.TwitterAPI
   8
   9   def fetch_replied_to_activity(entry, inReplyTo) do
  10     if inReplyTo && !Object.get_cached_by_ap_id(inReplyTo) do
  11       inReplyToHref = XML.string_from_xpath("//thr:in-reply-to[1]/@href", entry)
  12       if inReplyToHref do
  13         OStatus.fetch_activity_from_html_url(inReplyToHref)
  14       else
  15         Logger.debug("Couldn't find a href link to #{inReplyTo}")
  16       end
  17     end
  18   end
  19
  20   @doc """
  21   Get the context for this note. Uses this:
  22   1. The context of the parent activity
  23   2. The conversation reference in the ostatus xml
  24   3. A newly generated context id.
  25   """
  26   def get_context(entry, inReplyTo) do
  27     context = (XML.string_from_xpath("//ostatus:conversation[1]", entry) || "") |> String.trim
  28
  29     with %{data: %{"context" => context}} <- Object.get_cached_by_ap_id(inReplyTo) do
  30       context
  31     else _e ->
  32       if String.length(context) > 0 do
  33         context
  34       else
  35         Utils.generate_context_id
  36       end
  37     end
  38   end
  39
  40   def get_mentions(entry) do
  41     :xmerl_xpath.string('//link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/person"]', entry)
  42     |> Enum.map(fn(person) -> XML.string_from_xpath("@href", person) end)
  43   end
  44
  45   def make_to_list(actor, mentions) do
  46     [
  47       "https://www.w3.org/ns/activitystreams#Public",
  48       User.ap_followers(actor)
  49     ] ++ mentions
  50   end
  51
  52   def handle_note(entry, doc \\ nil) do
  53     with id <- XML.string_from_xpath("//id", entry),
  54          activity when is_nil(activity) <- Activity.get_create_activity_by_object_ap_id(id),
  55          [author] <- :xmerl_xpath.string('//author[1]', doc),
  56          {:ok, actor} <- OStatus.find_make_or_update_user(author),
  57          content_html <- OStatus.get_content(entry),
  58          inReplyTo <- XML.string_from_xpath("//thr:in-reply-to[1]/@ref", entry),
  59          _inReplyToActivity <- fetch_replied_to_activity(entry, inReplyTo),
  60          inReplyToActivity <- Activity.get_create_activity_by_object_ap_id(inReplyTo),
  61          attachments <- OStatus.get_attachments(entry),
  62          context <- get_context(entry, inReplyTo),
  63          tags <- OStatus.get_tags(entry),
  64          mentions <- get_mentions(entry),
  65          to <- make_to_list(actor, mentions),
  66          date <- XML.string_from_xpath("//published", entry),
  67          note <- TwitterAPI.Utils.make_note_data(actor.ap_id, to, context, content_html, attachments, inReplyToActivity, []),
  68          note <- note |> Map.put("id", id) |> Map.put("tag", tags),
  69          # TODO: Handle this case in make_note_data
  70          note <- (if inReplyTo && !inReplyToActivity, do: note |> Map.put("inReplyTo", inReplyTo), else: note)
  71       do
  72       ActivityPub.create(to, actor, context, note, %{}, date, false)
  73     else
  74       %Activity{} = activity -> {:ok, activity}
  75       e -> {:error, e}
  76     end
  77   end
  78 end