akkoma/lib/pleroma/web/activity_pub/activity_pub.ex

185 lines
4.9 KiB
Elixir
Raw Normal View History

2017-03-21 08:21:52 +00:00
defmodule Pleroma.Web.ActivityPub.ActivityPub do
alias Pleroma.{Activity, Repo, Object, Upload, User, Web}
alias Ecto.{Changeset, UUID}
2017-03-21 16:53:20 +00:00
import Ecto.Query
2017-03-21 08:21:52 +00:00
def insert(map) when is_map(map) do
2017-04-13 13:50:05 +00:00
map = map
|> Map.put_new_lazy("id", &generate_activity_id/0)
|> Map.put_new_lazy("published", &make_date/0)
2017-03-23 16:56:49 +00:00
2017-04-04 00:30:07 +00:00
map = if is_map(map["object"]) do
2017-03-23 20:22:49 +00:00
object = Map.put_new_lazy(map["object"], "id", &generate_object_id/0)
Repo.insert!(%Object{data: object})
2017-03-23 20:22:49 +00:00
Map.put(map, "object", object)
else
map
end
2017-03-21 08:21:52 +00:00
Repo.insert(%Activity{data: map})
end
2017-03-21 16:53:20 +00:00
def like(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object) do
cond do
# There's already a like here, so return the original activity.
ap_id in (object.data["likes"] || []) ->
query = from activity in Activity,
2017-04-14 16:08:47 +00:00
where: fragment("? @> ?", activity.data, ^%{actor: ap_id, object: id, type: "Like"})
2017-04-13 13:50:05 +00:00
activity = Repo.one(query)
{:ok, activity, object}
true ->
data = %{
"type" => "Like",
"actor" => ap_id,
"object" => id,
"to" => [User.ap_followers(user), object.data["actor"]]
}
2017-04-13 13:50:05 +00:00
{:ok, activity} = insert(data)
2017-04-13 13:50:05 +00:00
likes = [ap_id | (object.data["likes"] || [])] |> Enum.uniq
new_data = object.data
|> Map.put("like_count", length(likes))
|> Map.put("likes", likes)
changeset = Changeset.change(object, data: new_data)
{:ok, object} = Repo.update(changeset)
2017-04-14 16:08:47 +00:00
update_object_in_activities(object)
{:ok, activity, object}
end
2017-04-13 13:50:05 +00:00
end
2017-04-14 16:08:47 +00:00
defp update_object_in_activities(%{data: %{"id" => id}} = object) do
# Update activities that already had this. Could be done in a seperate process.
relevant_activities = Activity.all_by_object_ap_id(id)
Enum.map(relevant_activities, fn (activity) ->
new_activity_data = activity.data |> Map.put("object", object.data)
changeset = Changeset.change(activity, data: new_activity_data)
2017-04-14 16:08:47 +00:00
Repo.update(changeset)
end)
end
2017-04-15 11:54:46 +00:00
def unlike(%User{ap_id: ap_id}, %Object{data: %{ "id" => id}} = object) do
2017-04-14 16:08:47 +00:00
query = from activity in Activity,
where: fragment("? @> ?", activity.data, ^%{actor: ap_id, object: id, type: "Like"})
activity = Repo.one(query)
if activity do
# just delete for now...
{:ok, _activity} = Repo.delete(activity)
likes = (object.data["likes"] || []) |> List.delete(ap_id)
new_data = object.data
|> Map.put("like_count", length(likes))
|> Map.put("likes", likes)
changeset = Changeset.change(object, data: new_data)
2017-04-14 16:08:47 +00:00
{:ok, object} = Repo.update(changeset)
update_object_in_activities(object)
{:ok, object}
else
{:ok, object}
end
end
2017-03-23 16:56:49 +00:00
def generate_activity_id do
2017-03-23 22:34:10 +00:00
generate_id("activities")
end
def generate_context_id do
generate_id("contexts")
2017-03-23 16:56:49 +00:00
end
2017-03-23 20:22:49 +00:00
def generate_object_id do
2017-03-23 22:34:10 +00:00
generate_id("objects")
end
def generate_id(type) do
"#{Web.base_url()}/#{type}/#{UUID.generate}"
2017-03-23 20:22:49 +00:00
end
2017-03-21 19:31:48 +00:00
def fetch_public_activities(opts \\ %{}) do
2017-03-22 13:45:17 +00:00
public = ["https://www.w3.org/ns/activitystreams#Public"]
fetch_activities(public, opts)
end
def fetch_activities(recipients, opts \\ %{}) do
2017-03-21 20:09:20 +00:00
since_id = opts["since_id"] || 0
2017-03-21 19:31:48 +00:00
2017-03-21 16:53:20 +00:00
query = from activity in Activity,
2017-03-21 19:22:05 +00:00
limit: 20,
order_by: [desc: :inserted_at]
2017-03-21 16:53:20 +00:00
2017-03-22 13:45:17 +00:00
query = Enum.reduce(recipients, query, fn (recipient, q) ->
map = %{ to: [recipient] }
from activity in q,
or_where: fragment(~s(? @> ?), activity.data, ^map)
end)
query = from activity in query,
where: activity.id > ^since_id
query = if opts["max_id"] do
from activity in query, where: activity.id < ^opts["max_id"]
else
query
end
2017-04-14 13:09:13 +00:00
query = if opts["actor_id"] do
from activity in query,
where: fragment("? @> ?", activity.data, ^%{actor: opts["actor_id"]})
else
query
end
Enum.reverse(Repo.all(query))
2017-03-21 16:53:20 +00:00
end
2017-03-23 23:09:08 +00:00
2017-04-15 10:11:20 +00:00
def announce(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object) do
data = %{
"type" => "Announce",
"actor" => ap_id,
"object" => id,
"to" => [User.ap_followers(user), object.data["actor"]]
2017-04-15 10:11:20 +00:00
}
{:ok, activity} = insert(data)
announcements = [ap_id | (object.data["announcements"] || [])] |> Enum.uniq
new_data = object.data
|> Map.put("announcement_count", length(announcements))
|> Map.put("announcements", announcements)
changeset = Changeset.change(object, data: new_data)
2017-04-15 10:11:20 +00:00
{:ok, object} = Repo.update(changeset)
update_object_in_activities(object)
{:ok, activity, object}
end
2017-03-23 23:09:08 +00:00
def fetch_activities_for_context(context) do
query = from activity in Activity,
where: fragment("? @> ?", activity.data, ^%{ context: context })
Repo.all(query)
end
2017-03-29 00:05:51 +00:00
2017-04-16 12:23:30 +00:00
def upload(file) do
2017-03-29 00:05:51 +00:00
data = Upload.store(file)
Repo.insert(%Object{data: data})
end
2017-04-13 13:50:05 +00:00
defp make_date do
DateTime.utc_now() |> DateTime.to_iso8601
end
2017-03-21 08:21:52 +00:00
end