Update outbox

lib/nulla_web/controllers/outbox_controller.ex

@@ -5,14 +5,51 @@ defmodule NullaWeb.OutboxController do
   alias Nulla.Models.Note
   alias Nulla.Models.InstanceSettings
 
-  def show(conn, %{"username" => username}) do
-    instance_settings = InstanceSettings.get_instance_settings!()
-    domain = instance_settings.domain
-    user = User.get_user_by_username!(username)
-    total = Note.get_total_notes_count(user.id)
+  def show(conn, %{"username" => username} = params) do
+    case Map.get(params, "page") do
+      "true" ->
+        instance_settings = InstanceSettings.get_instance_settings!()
+        domain = instance_settings.domain
+        user = User.get_user_by_username!(username)
+        max_id = params["max_id"] && String.to_integer(params["max_id"])
 
-    conn
-    |> put_resp_content_type("application/activity+json")
-    |> send_resp(200, Jason.encode!(ActivityPub.outbox(domain, username, total)))
+        notes =
+          if max_id do
+            Note.get_before_notes(user.id, max_id)
+          else
+            Note.get_latest_notes(user.id)
+          end
+
+        items = Enum.map(notes, &ActivityPub.render_activity(&1, domain))
+
+        next_max_id =
+          case List.last(notes) do
+            nil -> 0
+            last -> last.id
+          end
+
+        min_id =
+          case List.first(notes) do
+            nil -> 0
+            first -> first.id
+          end
+
+        conn
+        |> put_resp_content_type("application/activity+json")
+        |> send_resp(
+          200,
+          Jason.encode!(ActivityPub.outbox(domain, username, next_max_id, min_id || 0, items))
+        )
+
+      _ ->
+        instance_settings = InstanceSettings.get_instance_settings!()
+        domain = instance_settings.domain
+        user = User.get_user_by_username!(username)
+        total = Note.get_total_notes_count(user.id)
+
+        conn
+        |> put_resp_content_type("application/activity+json")
+        |> send_resp(200, Jason.encode!(ActivityPub.outbox(domain, username, total)))
+    end
   end
 end