+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
defmodule Pleroma.Web.OStatus.ActivityRepresenter do
- def to_simple_form(%{data: %{"object" => %{"type" => "Note"}}} = activity, user) do
- h = fn(str) -> [to_charlist(str)] end
+ alias Pleroma.Activity
+ alias Pleroma.Object
+ alias Pleroma.User
+ alias Pleroma.Web.OStatus.UserRepresenter
+
+ require Logger
+ require Pleroma.Constants
+
+ defp get_href(id) do
+ with %Object{data: %{"external_url" => external_url}} <- Object.get_cached_by_ap_id(id) do
+ external_url
+ else
+ _e -> id
+ end
+ end
+
+ defp get_in_reply_to(activity) do
+ with %Object{data: %{"inReplyTo" => in_reply_to}} <- Object.normalize(activity) do
+ [
+ {:"thr:in-reply-to",
+ [ref: to_charlist(in_reply_to), href: to_charlist(get_href(in_reply_to))], []}
+ ]
+ else
+ _ ->
+ []
+ end
+ end
+
+ defp get_mentions(to) do
+ Enum.map(to, fn id ->
+ cond do
+ # Special handling for the AP/Ostatus public collections
+ Pleroma.Constants.as_public() == id ->
+ {:link,
+ [
+ rel: "mentioned",
+ "ostatus:object-type": "http://activitystrea.ms/schema/1.0/collection",
+ href: "http://activityschema.org/collection/public"
+ ], []}
+
+ # Ostatus doesn't handle follower collections, ignore these.
+ Regex.match?(~r/^#{Pleroma.Web.base_url()}.+followers$/, id) ->
+ []
+
+ true ->
+ {:link,
+ [
+ rel: "mentioned",
+ "ostatus:object-type": "http://activitystrea.ms/schema/1.0/person",
+ href: id
+ ], []}
+ end
+ end)
+ end
+
+ defp get_links(%{local: true}, %{"id" => object_id}) do
+ h = fn str -> [to_charlist(str)] end
+
+ [
+ {:link, [type: ['application/atom+xml'], href: h.(object_id), rel: 'self'], []},
+ {:link, [type: ['text/html'], href: h.(object_id), rel: 'alternate'], []}
+ ]
+ end
+
+ defp get_links(%{local: false}, %{"external_url" => external_url}) do
+ h = fn str -> [to_charlist(str)] end
+
+ [
+ {:link, [type: ['text/html'], href: h.(external_url), rel: 'alternate'], []}
+ ]
+ end
+
+ defp get_links(_activity, _object_data), do: []
+
+ defp get_emoji_links(emojis) do
+ Enum.map(emojis, fn {emoji, file} ->
+ {:link, [name: to_charlist(emoji), rel: 'emoji', href: to_charlist(file)], []}
+ end)
+ end
+
+ def to_simple_form(activity, user, with_author \\ false)
+
+ def to_simple_form(%{data: %{"type" => "Create"}} = activity, user, with_author) do
+ h = fn str -> [to_charlist(str)] end
+
+ object = Object.normalize(activity)
+
+ updated_at = object.data["published"]
+ inserted_at = object.data["published"]
+
+ attachments =
+ Enum.map(object.data["attachment"] || [], fn attachment ->
+ url = hd(attachment["url"])
+
+ {:link,
+ [rel: 'enclosure', href: to_charlist(url["href"]), type: to_charlist(url["mediaType"])],
+ []}
+ end)
- updated_at = activity.updated_at
- |> NaiveDateTime.to_iso8601
- inserted_at = activity.inserted_at
- |> NaiveDateTime.to_iso8601
+ in_reply_to = get_in_reply_to(activity)
+ author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
+ mentions = activity.recipients |> get_mentions
+
+ categories =
+ (object.data["tag"] || [])
+ |> Enum.map(fn tag ->
+ if is_binary(tag) do
+ {:category, [term: to_charlist(tag)], []}
+ else
+ nil
+ end
+ end)
+ |> Enum.filter(& &1)
+
+ emoji_links = get_emoji_links(object.data["emoji"] || %{})
+
+ summary =
+ if object.data["summary"] do
+ [{:summary, [], h.(object.data["summary"])}]
+ else
+ []
+ end
[
{:"activity:object-type", ['http://activitystrea.ms/schema/1.0/note']},
{:"activity:verb", ['http://activitystrea.ms/schema/1.0/post']},
- {:id, h.(activity.data["object"]["id"])},
+ # For notes, federate the object id.
+ {:id, h.(object.data["id"])},
{:title, ['New note by #{user.nickname}']},
- {:content, [type: 'html'], h.(activity.data["object"]["content"])},
+ {:content, [type: 'html'], h.(object.data["content"] |> String.replace(~r/[\n\r]/, ""))},
+ {:published, h.(inserted_at)},
+ {:updated, h.(updated_at)},
+ {:"ostatus:conversation", [ref: h.(activity.data["context"])],
+ h.(activity.data["context"])},
+ {:link, [ref: h.(activity.data["context"]), rel: 'ostatus:conversation'], []}
+ ] ++
+ summary ++
+ get_links(activity, object.data) ++
+ categories ++ attachments ++ in_reply_to ++ author ++ mentions ++ emoji_links
+ end
+
+ def to_simple_form(%{data: %{"type" => "Like"}} = activity, user, with_author) do
+ h = fn str -> [to_charlist(str)] end
+
+ updated_at = activity.data["published"]
+ inserted_at = activity.data["published"]
+
+ author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
+ mentions = activity.recipients |> get_mentions
+
+ [
+ {:"activity:verb", ['http://activitystrea.ms/schema/1.0/favorite']},
+ {:id, h.(activity.data["id"])},
+ {:title, ['New favorite by #{user.nickname}']},
+ {:content, [type: 'html'], ['#{user.nickname} favorited something']},
+ {:published, h.(inserted_at)},
+ {:updated, h.(updated_at)},
+ {:"activity:object",
+ [
+ {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/note']},
+ # For notes, federate the object id.
+ {:id, h.(activity.data["object"])}
+ ]},
+ {:"ostatus:conversation", [ref: h.(activity.data["context"])],
+ h.(activity.data["context"])},
+ {:link, [ref: h.(activity.data["context"]), rel: 'ostatus:conversation'], []},
+ {:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []},
+ {:"thr:in-reply-to", [ref: to_charlist(activity.data["object"])], []}
+ ] ++ author ++ mentions
+ end
+
+ def to_simple_form(%{data: %{"type" => "Announce"}} = activity, user, with_author) do
+ h = fn str -> [to_charlist(str)] end
+
+ updated_at = activity.data["published"]
+ inserted_at = activity.data["published"]
+
+ author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
+
+ retweeted_activity = Activity.get_create_by_object_ap_id(activity.data["object"])
+ retweeted_object = Object.normalize(retweeted_activity)
+ retweeted_user = User.get_cached_by_ap_id(retweeted_activity.data["actor"])
+
+ retweeted_xml = to_simple_form(retweeted_activity, retweeted_user, true)
+
+ mentions =
+ ([retweeted_user.ap_id] ++ activity.recipients)
+ |> Enum.uniq()
+ |> get_mentions()
+
+ [
+ {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/activity']},
+ {:"activity:verb", ['http://activitystrea.ms/schema/1.0/share']},
+ {:id, h.(activity.data["id"])},
+ {:title, ['#{user.nickname} repeated a notice']},
+ {:content, [type: 'html'], ['RT #{retweeted_object.data["content"]}']},
+ {:published, h.(inserted_at)},
+ {:updated, h.(updated_at)},
+ {:"ostatus:conversation", [ref: h.(activity.data["context"])],
+ h.(activity.data["context"])},
+ {:link, [ref: h.(activity.data["context"]), rel: 'ostatus:conversation'], []},
+ {:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []},
+ {:"activity:object", retweeted_xml}
+ ] ++ mentions ++ author
+ end
+
+ def to_simple_form(%{data: %{"type" => "Follow"}} = activity, user, with_author) do
+ h = fn str -> [to_charlist(str)] end
+
+ updated_at = activity.data["published"]
+ inserted_at = activity.data["published"]
+
+ author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
+
+ mentions = (activity.recipients || []) |> get_mentions
+
+ [
+ {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/activity']},
+ {:"activity:verb", ['http://activitystrea.ms/schema/1.0/follow']},
+ {:id, h.(activity.data["id"])},
+ {:title, ['#{user.nickname} started following #{activity.data["object"]}']},
+ {:content, [type: 'html'],
+ ['#{user.nickname} started following #{activity.data["object"]}']},
+ {:published, h.(inserted_at)},
+ {:updated, h.(updated_at)},
+ {:"activity:object",
+ [
+ {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/person']},
+ {:id, h.(activity.data["object"])},
+ {:uri, h.(activity.data["object"])}
+ ]},
+ {:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []}
+ ] ++ mentions ++ author
+ end
+
+ # Only undos of follow for now. Will need to get redone once there are more
+ def to_simple_form(
+ %{data: %{"type" => "Undo", "object" => %{"type" => "Follow"} = follow_activity}} =
+ activity,
+ user,
+ with_author
+ ) do
+ h = fn str -> [to_charlist(str)] end
+
+ updated_at = activity.data["published"]
+ inserted_at = activity.data["published"]
+
+ author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
+
+ mentions = (activity.recipients || []) |> get_mentions
+ follow_activity = Activity.normalize(follow_activity)
+
+ [
+ {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/activity']},
+ {:"activity:verb", ['http://activitystrea.ms/schema/1.0/unfollow']},
+ {:id, h.(activity.data["id"])},
+ {:title, ['#{user.nickname} stopped following #{follow_activity.data["object"]}']},
+ {:content, [type: 'html'],
+ ['#{user.nickname} stopped following #{follow_activity.data["object"]}']},
+ {:published, h.(inserted_at)},
+ {:updated, h.(updated_at)},
+ {:"activity:object",
+ [
+ {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/person']},
+ {:id, h.(follow_activity.data["object"])},
+ {:uri, h.(follow_activity.data["object"])}
+ ]},
+ {:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []}
+ ] ++ mentions ++ author
+ end
+
+ def to_simple_form(%{data: %{"type" => "Delete"}} = activity, user, with_author) do
+ h = fn str -> [to_charlist(str)] end
+
+ updated_at = activity.data["published"]
+ inserted_at = activity.data["published"]
+
+ author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
+
+ [
+ {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/activity']},
+ {:"activity:verb", ['http://activitystrea.ms/schema/1.0/delete']},
+ {:id, h.(activity.data["object"])},
+ {:title, ['An object was deleted']},
+ {:content, [type: 'html'], ['An object was deleted']},
{:published, h.(inserted_at)},
{:updated, h.(updated_at)}
+ ] ++ author
+ end
+
+ def to_simple_form(_, _, _), do: nil
+
+ def wrap_with_entry(simple_form) do
+ [
+ {
+ :entry,
+ [
+ xmlns: 'http://www.w3.org/2005/Atom',
+ "xmlns:thr": 'http://purl.org/syndication/thread/1.0',
+ "xmlns:activity": 'http://activitystrea.ms/spec/1.0/',
+ "xmlns:poco": 'http://portablecontacts.net/spec/1.0',
+ "xmlns:ostatus": 'http://ostatus.org/schema/1.0'
+ ],
+ simple_form
+ }
]
end
end