Add user route

lib/clacks/actor.ex

@@ -27,6 +27,11 @@ defmodule Clacks.Actor do
     |> validate_required([:ap_id, :nickname, :local, :data])
   end
 
+  @spec get_by_nickanme(nickname :: String.t()) :: t() | nil
+  def get_by_nickanme(nickname) do
+    Repo.one(from a in __MODULE__, where: a.nickname == ^nickname)
+  end
+
   @spec get_by_ap_id(ap_id :: String.t(), force_refetch :: boolean()) :: t() | nil
   def get_by_ap_id(ap_id, force_refetch \\ false) do
     if force_refetch do

lib/clacks_web/controllers/actor_controller.ex

@@ -0,0 +1,22 @@
+defmodule ClacksWeb.ActorController do
+  use ClacksWeb, :controller
+  alias Clacks.{Repo, Actor}
+  import Ecto.Query
+
+  def get(conn, %{"nickname" => nickname}) do
+    case Actor.get_by_nickanme(nickname) do
+      %Actor{local: true, data: data} ->
+        conn
+        |> put_resp_header("content-type", "application/activity+json")
+        |> json(data)
+
+      %Actor{local: false, ap_id: ap_id} ->
+        conn
+        |> redirect(external: ap_id)
+
+      _ ->
+        conn
+        |> put_status(404)
+    end
+  end
+end

lib/clacks_web/router.ex

@@ -15,14 +15,13 @@ defmodule ClacksWeb.Router do
 
   scope "/", ClacksWeb do
     pipe_through :browser
-
-    get "/", PageController, :index
   end
 
   scope "/", ClacksWeb do
     pipe_through :activitypub
 
     get "/objects/:id", ObjectsController, :get
+    get "/users/:nickname", ActorController, :get
   end
 
   # Other scopes may use custom stacks.