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