Add GET /api/pleroma/admin/relay endpoint - lists all followed relays

lib/mix/tasks/pleroma/relay.ex

@@ -5,7 +5,6 @@
 defmodule Mix.Tasks.Pleroma.Relay do
   use Mix.Task
   import Mix.Pleroma
-  alias Pleroma.User
   alias Pleroma.Web.ActivityPub.Relay
 
   @shortdoc "Manages remote relays"
@@ -36,13 +35,10 @@ defmodule Mix.Tasks.Pleroma.Relay do
   def run(["list"]) do
     start_pleroma()
 
-    with %User{following: following} = _user <- Relay.get_actor() do
-      following
-      |> Enum.map(fn entry -> URI.parse(entry).host end)
-      |> Enum.uniq()
-      |> Enum.each(&shell_info(&1))
+    with {:ok, list} <- Relay.list() do
+      list |> Enum.each(&shell_info(&1))
     else
-      e -> shell_error("Error while fetching relay subscription list: #{inspect(e)}")
+      {:error, e} -> shell_error("Error while fetching relay subscription list: #{inspect(e)}")
     end
   end
 end

lib/pleroma/web/activity_pub/relay.ex

@@ -51,6 +51,20 @@ defmodule Pleroma.Web.ActivityPub.Relay do
 
   def publish(_), do: {:error, "Not implemented"}
 
+  @spec list() :: {:ok, [String.t()]} | {:error, any()}
+  def list do
+    with %User{following: following} = _user <- get_actor() do
+      list =
+        following
+        |> Enum.map(fn entry -> URI.parse(entry).host end)
+        |> Enum.uniq()
+
+      {:ok, list}
+    else
+      error -> format_error(error)
+    end
+  end
+
   defp format_error({:error, error}), do: format_error(error)
 
   defp format_error(error) do

lib/pleroma/web/admin_api/admin_api_controller.ex

@@ -401,6 +401,16 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
     end
   end
 
+  def relay_list(conn, _params) do
+    with {:ok, list} <- Relay.list() do
+      json(conn, %{relays: list})
+    else
+      _ ->
+        conn
+        |> put_status(500)
+    end
+  end
+
   def relay_follow(%{assigns: %{user: admin}} = conn, %{"relay_url" => target}) do
     with {:ok, _message} <- Relay.follow(target) do
       ModerationLog.insert_log(%{

lib/pleroma/web/router.ex

@@ -152,6 +152,7 @@ defmodule Pleroma.Web.Router do
 
     put("/users/:nickname/activation_status", AdminAPIController, :set_activation_status)
 
+    get("/relay", AdminAPIController, :relay_list)
     post("/relay", AdminAPIController, :relay_follow)
     delete("/relay", AdminAPIController, :relay_unfollow)