alias Ecto.{Changeset, UUID}
import Ecto.Query
+ # Some implementations send the actor URI as the actor field, others send the entire actor object,
+ # so figure out what the actor's URI is based on what we have.
+ def normalize_actor(actor) do
+ cond do
+ is_binary(actor) ->
+ actor
+
+ is_map(actor) ->
+ actor["id"]
+ end
+ end
+
+ def normalize_params(params) do
+ Map.put(params, "actor", normalize_actor(params["actor"]))
+ end
+
def make_json_ld_header do
%{
"@context" => [
"#{Web.base_url()}/#{type}/#{UUID.generate()}"
end
+ def create_context(context) do
+ context = context || generate_id("contexts")
+ changeset = Object.context_mapping(context)
+
+ case Repo.insert(changeset) do
+ {:ok, object} ->
+ object
+
+ # This should be solved by an upsert, but it seems ecto
+ # has problems accessing the constraint inside the jsonb.
+ {:error, _} ->
+ Object.get_cached_by_ap_id(context)
+ end
+ end
+
@doc """
Enqueues an activity for federation if it's local
"""
also adds it to an included object
"""
def lazy_put_activity_defaults(map) do
+ %{data: %{"id" => context}, id: context_id} = create_context(map["context"])
+
map =
map
|> Map.put_new_lazy("id", &generate_activity_id/0)
|> Map.put_new_lazy("published", &make_date/0)
+ |> Map.put_new("context", context)
+ |> Map.put_new("context_id", context_id)
if is_map(map["object"]) do
- object = lazy_put_object_defaults(map["object"])
+ object = lazy_put_object_defaults(map["object"], map)
%{map | "object" => object}
else
map
@doc """
Adds an id and published date if they aren't there.
"""
- def lazy_put_object_defaults(map) do
+ def lazy_put_object_defaults(map, activity \\ %{}) do
map
|> Map.put_new_lazy("id", &generate_object_id/0)
|> Map.put_new_lazy("published", &make_date/0)
+ |> Map.put_new("context", activity["context"])
+ |> Map.put_new("context_id", activity["context_id"])
end
@doc """
def update_element_in_object(property, element, object) do
with new_data <-
- object.data |> Map.put("#{property}_count", length(element))
+ object.data
+ |> Map.put("#{property}_count", length(element))
|> Map.put("#{property}s", element),
changeset <- Changeset.change(object, data: new_data),
{:ok, object} <- Repo.update(changeset),
#### Announce-related helpers
+ @doc """
+ Retruns an existing announce activity if the notice has already been announced
+ """
+ def get_existing_announce(actor, %{data: %{"id" => id}}) do
+ query =
+ from(
+ activity in Activity,
+ where: fragment("(?)->>'actor' = ?", activity.data, ^actor),
+ # this is to use the index
+ where:
+ fragment(
+ "coalesce((?)->'object'->>'id', (?)->>'object') = ?",
+ activity.data,
+ activity.data,
+ ^id
+ ),
+ where: fragment("(?)->>'type' = 'Announce'", activity.data)
+ )
+
+ Repo.one(query)
+ end
+
@doc """
Make announce activity data for the given actor and object
"""
if activity_id, do: Map.put(data, "id", activity_id), else: data
end
+ @doc """
+ Make unannounce activity data for the given actor and object
+ """
+ def make_unannounce_data(
+ %User{ap_id: ap_id} = user,
+ %Activity{data: %{"context" => context}} = activity,
+ activity_id
+ ) do
+ data = %{
+ "type" => "Undo",
+ "actor" => ap_id,
+ "object" => activity.data,
+ "to" => [user.follower_address, activity.data["actor"]],
+ "cc" => ["https://www.w3.org/ns/activitystreams#Public"],
+ "context" => context
+ }
+
+ if activity_id, do: Map.put(data, "id", activity_id), else: data
+ end
+
+ def make_unlike_data(
+ %User{ap_id: ap_id} = user,
+ %Activity{data: %{"context" => context}} = activity,
+ activity_id
+ ) do
+ data = %{
+ "type" => "Undo",
+ "actor" => ap_id,
+ "object" => activity.data,
+ "to" => [user.follower_address, activity.data["actor"]],
+ "cc" => ["https://www.w3.org/ns/activitystreams#Public"],
+ "context" => context
+ }
+
+ if activity_id, do: Map.put(data, "id", activity_id), else: data
+ end
+
def add_announce_to_object(%Activity{data: %{"actor" => actor}}, object) do
with announcements <- [actor | object.data["announcements"] || []] |> Enum.uniq() do
update_element_in_object("announcement", announcements, object)
end
end
+ def remove_announce_from_object(%Activity{data: %{"actor" => actor}}, object) do
+ with announcements <- (object.data["announcements"] || []) |> List.delete(actor) do
+ update_element_in_object("announcement", announcements, object)
+ end
+ end
+
#### Unfollow-related helpers
- def make_unfollow_data(follower, followed, follow_activity) do
- %{
+ def make_unfollow_data(follower, followed, follow_activity, activity_id) do
+ data = %{
"type" => "Undo",
"actor" => follower.ap_id,
"to" => [followed.ap_id],
- "object" => follow_activity.data["id"]
+ "object" => follow_activity.data
+ }
+ if activity_id, do: Map.put(data, "id", activity_id), else: data
+ end
+
+ #### Block-related helpers
+ def fetch_latest_block(%User{ap_id: blocker_id}, %User{ap_id: blocked_id}) do
+ query =
+ from(
+ activity in Activity,
+ where:
+ fragment(
+ "? @> ?",
+ activity.data,
+ ^%{type: "Block", actor: blocker_id, object: blocked_id}
+ ),
+ order_by: [desc: :id],
+ limit: 1
+ )
+
+ Repo.one(query)
+ end
+
+ def make_block_data(blocker, blocked, activity_id) do
+ data = %{
+ "type" => "Block",
+ "actor" => blocker.ap_id,
+ "to" => [blocked.ap_id],
+ "object" => blocked.ap_id
}
+ if activity_id, do: Map.put(data, "id", activity_id), else: data
+ end
+
+ def make_unblock_data(blocker, blocked, block_activity, activity_id) do
+ data = %{
+ "type" => "Undo",
+ "actor" => blocker.ap_id,
+ "to" => [blocked.ap_id],
+ "object" => block_activity.data
+ }
+ if activity_id, do: Map.put(data, "id", activity_id), else: data
end
#### Create-related helpers
projects / akkoma / blobdiff