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defmodule Pleroma.Web.OStatus.NoteHandler do
require Logger
alias Pleroma.Web.{XML, OStatus}
alias Pleroma.{Object, User, Activity}
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.CommonAPI
@doc """
Get the context for this note. Uses this:
1. The context of the parent activity
2. The conversation reference in the ostatus xml
3. A newly generated context id.
"""
def get_context(entry, inReplyTo) do
context = (
XML.string_from_xpath("//ostatus:conversation[1]", entry)
|| XML.string_from_xpath("//ostatus:conversation[1]/@ref", entry)
|| "") |> String.trim
with %{data: %{"context" => context}} <- Object.get_cached_by_ap_id(inReplyTo) do
context
else _e ->
if String.length(context) > 0 do
context
else
Utils.generate_context_id
end
end
end
def get_people_mentions(entry) do
:xmerl_xpath.string('//link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/person"]', entry)
|> Enum.map(fn(person) -> XML.string_from_xpath("@href", person) end)
end
def get_collection_mentions(entry) do
transmogrify = fn
("http://activityschema.org/collection/public") ->
"https://www.w3.org/ns/activitystreams#Public"
(group) ->
group
end
:xmerl_xpath.string('//link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/collection"]', entry)
|> Enum.map(fn(collection) -> XML.string_from_xpath("@href", collection) |> transmogrify.() end)
end
def get_mentions(entry) do
(get_people_mentions(entry)
++ get_collection_mentions(entry))
|> Enum.filter(&(&1))
end
def get_emoji(entry) do
try do
:xmerl_xpath.string('//link[@rel="emoji"]', entry)
|> Enum.reduce(%{}, fn(emoji, acc) ->
Map.put(acc, XML.string_from_xpath("@name", emoji), XML.string_from_xpath("@href", emoji))
end)
rescue
_e -> nil
end
end
def make_to_list(actor, mentions) do
[
actor.follower_address
] ++ mentions
end
def add_external_url(note, entry) do
url = XML.string_from_xpath("//link[@rel='alternate' and @type='text/html']/@href", entry)
Map.put(note, "external_url", url)
end
def fetch_replied_to_activity(entry, inReplyTo) do
with %Activity{} = activity <- Activity.get_create_activity_by_object_ap_id(inReplyTo) do
activity
else
_e ->
with inReplyToHref when not is_nil(inReplyToHref) <- XML.string_from_xpath("//thr:in-reply-to[1]/@href", entry),
{:ok, [activity | _]} <- OStatus.fetch_activity_from_url(inReplyToHref) do
activity
else
_e -> nil
end
end
end
def handle_note(entry, doc \\ nil) do
with id <- XML.string_from_xpath("//id", entry),
activity when is_nil(activity) <- Activity.get_create_activity_by_object_ap_id(id),
[author] <- :xmerl_xpath.string('//author[1]', doc),
{:ok, actor} <- OStatus.find_make_or_update_user(author),
content_html <- OStatus.get_content(entry),
cw <- OStatus.get_cw(entry),
inReplyTo <- XML.string_from_xpath("//thr:in-reply-to[1]/@ref", entry),
inReplyToActivity <- fetch_replied_to_activity(entry, inReplyTo),
inReplyTo <- (inReplyToActivity && inReplyToActivity.data["object"]["id"]) || inReplyTo,
attachments <- OStatus.get_attachments(entry),
context <- get_context(entry, inReplyTo),
tags <- OStatus.get_tags(entry),
mentions <- get_mentions(entry),
to <- make_to_list(actor, mentions),
date <- XML.string_from_xpath("//published", entry),
note <- CommonAPI.Utils.make_note_data(actor.ap_id, to, context, content_html, attachments, inReplyToActivity, [], cw),
note <- note |> Map.put("id", id) |> Map.put("tag", tags),
note <- note |> Map.put("published", date),
note <- note |> Map.put("emoji", get_emoji(entry)),
note <- add_external_url(note, entry),
# TODO: Handle this case in make_note_data
note <- (if inReplyTo && !inReplyToActivity, do: note |> Map.put("inReplyTo", inReplyTo), else: note)
do
res = ActivityPub.create(to, actor, context, note, %{}, date, false)
User.increase_note_count(actor)
res
else
%Activity{} = activity -> {:ok, activity}
e -> {:error, e}
end
end
end
|
