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

   1 defmodule Pleroma.Web.ActivityPub.ActivityPub do
   2   alias Pleroma.Repo
   3   alias Pleroma.Activity
   4   import Ecto.Query
   5
   6   def insert(map) when is_map(map) do
   7     map = Map.put_new_lazy(map, "id", &generate_activity_id/0)
   8
   9     Repo.insert(%Activity{data: map})
  10   end
  11
  12   def generate_activity_id do
  13     host =
  14       Application.get_env(:pleroma, Pleroma.Web.Endpoint)
  15       |> Keyword.fetch!(:url)
  16       |> Keyword.fetch!(:host)
  17     "https://#{host}/activities/#{Ecto.UUID.generate}"
  18   end
  19
  20   def fetch_public_activities(opts \\ %{}) do
  21     public = ["https://www.w3.org/ns/activitystreams#Public"]
  22     fetch_activities(public, opts)
  23   end
  24
  25   def fetch_activities(recipients, opts \\ %{}) do
  26     since_id = opts["since_id"] || 0
  27
  28     query = from activity in Activity,
  29       limit: 20,
  30       order_by: [desc: :inserted_at]
  31
  32     query = Enum.reduce(recipients, query, fn (recipient, q) ->
  33       map = %{ to: [recipient] }
  34       from activity in q,
  35       or_where: fragment(~s(? @> ?), activity.data, ^map)
  36     end)
  37
  38     query = from activity in query,
  39       where: activity.id > ^since_id
  40
  41     Repo.all(query)
  42     |> Enum.reverse
  43   end
  44 end