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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.OStatus.FeedRepresenter do
   6   alias Pleroma.Web.OStatus
   7   alias Pleroma.Web.OStatus.{UserRepresenter, ActivityRepresenter}
   8   alias Pleroma.User
   9   alias Pleroma.Web.MediaProxy
  10
  11   def to_simple_form(user, activities, _users) do
  12     most_recent_update =
  13       (List.first(activities) || user).updated_at
  14       |> NaiveDateTime.to_iso8601()
  15
  16     h = fn str -> [to_charlist(str)] end
  17
  18     last_activity = List.last(activities)
  19
  20     entries =
  21       activities
  22       |> Enum.map(fn activity ->
  23         {:entry, ActivityRepresenter.to_simple_form(activity, user)}
  24       end)
  25       |> Enum.filter(fn {_, form} -> form end)
  26
  27     [
  28       {
  29         :feed,
  30         [
  31           xmlns: 'http://www.w3.org/2005/Atom',
  32           "xmlns:thr": 'http://purl.org/syndication/thread/1.0',
  33           "xmlns:activity": 'http://activitystrea.ms/spec/1.0/',
  34           "xmlns:poco": 'http://portablecontacts.net/spec/1.0',
  35           "xmlns:ostatus": 'http://ostatus.org/schema/1.0'
  36         ],
  37         [
  38           {:id, h.(OStatus.feed_path(user))},
  39           {:title, ['#{user.nickname}\'s timeline']},
  40           {:updated, h.(most_recent_update)},
  41           {:logo, [to_charlist(User.avatar_url(user) |> MediaProxy.url())]},
  42           {:link, [rel: 'hub', href: h.(OStatus.pubsub_path(user))], []},
  43           {:link, [rel: 'salmon', href: h.(OStatus.salmon_path(user))], []},
  44           {:link, [rel: 'self', href: h.(OStatus.feed_path(user)), type: 'application/atom+xml'],
  45            []},
  46           {:author, UserRepresenter.to_simple_form(user)}
  47         ] ++
  48           if last_activity do
  49             [
  50               {:link,
  51                [
  52                  rel: 'next',
  53                  href:
  54                    to_charlist(OStatus.feed_path(user)) ++
  55                      '?max_id=' ++ to_charlist(last_activity.id),
  56                  type: 'application/atom+xml'
  57                ], []}
  58             ]
  59           else
  60             []
  61           end ++ entries
  62       }
  63     ]
  64   end
  65 end