honkoma/lib/pleroma/web/ostatus/activity_representer.ex

313 lines
11 KiB
Elixir

# 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
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)
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']},
# For notes, federate the object id.
{:id, h.(object.data["id"])},
{:title, ['New note by #{user.nickname}']},
{: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_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_activity.data["object"]["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