Update

lib/nulla_web/controllers/inbox_controller.ex

@@ -1,19 +1,49 @@
 defmodule NullaWeb.InboxController do
   use NullaWeb, :controller
-  alias Nulla.Models.Follow
+  alias Nulla.HTTPSignature
+  alias Nulla.ActivityPub
   alias Nulla.Utils
+  alias Nulla.Models.Actor
+  alias Nulla.Models.Relation
 
   def inbox(
         conn,
-        %{"type" => "Follow", "actor" => actor_uri, "object" => target_uri} = activity
+        %{"id" => follow_id, "type" => "Follow", "actor" => actor_uri, "object" => target_uri}
       ) do
-    with {:ok, target_user} <- Utils.resolve_local_actor(target_uri),
-         {:ok, remote_actor} <- Utils.fetch_remote_actor(actor_uri),
-         :ok <- HTTPSignature.verify(conn, remote_actor),
-         remote_user <- Follow.create_remote_user(remote_actor),
-         follow <- Follow.create_follow(%{user: remote_user, target: target_user}),
-         :ok <- Utils.send_accept_activity(remote_actor, target_user, follow, activity) do
-      json(conn, %{"status" => "Follow accepted"})
+    with {:ok, target_actor} <- Utils.resolve_local_actor(target_uri),
+         {:ok, remote_actor_json} <- Utils.fetch_remote_actor(actor_uri),
+         :ok <- HTTPSignature.verify(conn, remote_actor_json),
+         remote_actor <-
+           Actor.create_actor(
+             remote_actor_json
+             |> Map.put("ap_id", remote_actor_json["id"])
+             |> Map.delete("id")
+             |> Map.put("domain", URI.parse(remote_actor_json["id"]).host)
+           ),
+         follow_activity <-
+           Activity.create_activity(%{
+             ap_id: follow_id,
+             type: "Follow",
+             actor: actor_uri,
+             object: target_uri
+           }),
+         accept_activity <-
+           Activity.create_activity(%{
+             type: "Accept",
+             actor: target_uri,
+             object: follow_activity
+           }),
+         relation <- Relation.create_relation(%{
+           id: 1,
+           follower: remote_actor.id,
+           followed: target_actor.id
+         }) do
+      conn
+      |> put_resp_content_type("application/activity+json")
+      |> send_resp(
+        200,
+        Jason.encode!(ActivityPub.follow_accept(accept_activity))
+      )
     else
       error ->
         IO.inspect(error, label: "Follow error")