tasks: relay: add list task

CHANGELOG.md

@@ -10,6 +10,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Mastodon API: return the actual profile URL in the Account entity's `url` property when appropriate
 - Templates: properly style anchor tags
 
+### Added
+- Relays: Added a task to list relay subscriptions.
+
 ## [1.0.4] - 2019-08-01
 ### Fixed
 - Invalid SemVer version generation, when the current branch does not have commits ahead of tag/checked out on a tag

lib/mix/tasks/pleroma/relay.ex

@@ -5,6 +5,7 @@
 defmodule Mix.Tasks.Pleroma.Relay do
   use Mix.Task
   import Mix.Pleroma
+  alias Pleroma.User
   alias Pleroma.Web.ActivityPub.Relay
 
   @shortdoc "Manages remote relays"
@@ -22,6 +23,10 @@ defmodule Mix.Tasks.Pleroma.Relay do
   ``mix pleroma.relay unfollow <relay_url>``
 
   Example: ``mix pleroma.relay unfollow https://example.org/relay``
+
+  ## List relay subscriptions
+
+  ``mix pleroma.relay list``
   """
   def run(["follow", target]) do
     start_pleroma()
@@ -44,4 +49,19 @@ defmodule Mix.Tasks.Pleroma.Relay do
       {:error, e} -> shell_error("Error while following #{target}: #{inspect(e)}")
     end
   end
+
+  def run(["list"]) do
+    start_pleroma()
+
+    with %User{} = user <- Relay.get_actor() do
+      user.following
+      |> Enum.each(fn entry ->
+        URI.parse(entry)
+        |> Map.get(:host)
+        |> shell_info()
+      end)
+    else
+      e -> shell_error("Error while fetching relay subscription list: #{inspect(e)}")
+    end
+  end
 end