spc-pleroma/lib/pleroma/web/ostatus/activity_representer.ex

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defmodule Pleroma.Web.OStatus.ActivityRepresenter do
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alias Pleroma.{Activity, User}
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alias Pleroma.Web.OStatus.UserRepresenter
require Logger
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defp get_in_reply_to(%{"object" => %{"inReplyTo" => in_reply_to}}) do
[{:"thr:in-reply-to", [ref: to_charlist(in_reply_to)], []}]
end
defp get_in_reply_to(_), do: []
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defp get_mentions(to) do
Enum.map(to, fn (id) ->
cond do
# Special handling for the AP/Ostatus public collections
"https://www.w3.org/ns/activitystreams#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
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end)
end
defp get_links(%{local: true, data: data}) do
h = fn(str) -> [to_charlist(str)] end
[
{:link, [type: ['application/atom+xml'], href: h.(data["object"]["id"]), rel: 'self'], []},
{:link, [type: ['text/html'], href: h.(data["object"]["id"]), rel: 'alternate'], []}
]
end
defp get_links(%{local: false,
data: %{
"object" => %{
"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), do: []
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def to_simple_form(activity, user, with_author \\ false)
def to_simple_form(%{data: %{"object" => %{"type" => "Note"}}} = activity, user, with_author) do
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h = fn(str) -> [to_charlist(str)] end
updated_at = activity.data["object"]["published"]
inserted_at = activity.data["object"]["published"]
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attachments = Enum.map(activity.data["object"]["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.data)
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author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
mentions = activity.data["to"] |> get_mentions
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categories = (activity.data["object"]["tag"] || [])
|> Enum.map(fn (tag) -> {:category, [term: to_charlist(tag)], []} end)
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[
{:"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.
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{:title, ['New note by #{user.nickname}']},
{:content, [type: 'html'], h.(activity.data["object"]["content"] |> String.replace(~r/[\n\r]/, ""))},
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{:published, h.(inserted_at)},
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{:updated, h.(updated_at)},
{:"ostatus:conversation", [], h.(activity.data["context"])},
{:link, [ref: h.(activity.data["context"]), rel: 'ostatus:conversation'], []},
] ++ get_links(activity) ++ categories ++ attachments ++ in_reply_to ++ author ++ mentions
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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"]
in_reply_to = get_in_reply_to(activity.data)
author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
mentions = activity.data["to"] |> 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']},
{:id, h.(activity.data["object"])}, # For notes, federate the object id.
]},
{:"ostatus:conversation", [], h.(activity.data["context"])},
{:link, [ref: h.(activity.data["context"]), rel: 'ostatus:conversation'], []},
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{: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
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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"]
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in_reply_to = get_in_reply_to(activity.data)
author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
retweeted_activity = Activity.get_create_activity_by_object_ap_id(activity.data["object"])
retweeted_user = User.get_cached_by_ap_id(retweeted_activity.data["actor"])
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retweeted_xml = to_simple_form(retweeted_activity, retweeted_user, true)
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mentions = activity.data["to"] |> get_mentions
[
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{:"activity:object-type", ['http://activitystrea.ms/schema/1.0/activity']},
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{:"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", [], h.(activity.data["context"])},
{:link, [ref: h.(activity.data["context"]), rel: 'ostatus:conversation'], []},
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{:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []},
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{:"activity:object", retweeted_xml}
] ++ mentions ++ author
end
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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"]
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author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []
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mentions = (activity.data["to"] || []) |> get_mentions
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[
{:"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"}} = 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: []
follow_activity = Activity.get_by_ap_id(activity.data["object"])
mentions = (activity.data["to"] || []) |> get_mentions
[
{:"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
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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
}]
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end
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def to_simple_form(_, _, _), do: nil
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end