refactor: Move queue commands to queue.ex

lib/sergei/commands.ex

@@ -11,19 +11,10 @@ defmodule Sergei.Commands do
     opt.(3, "url", "URL of the audio to play", [])
   ]
 
-  @queue_add_opts [
-    opt.(3, "url", "URL of the audio to queue", required: true)
-  ]
-
-  @queue_opts [
-    opt.(1, "add", "Add a song to the queue", options: @queue_add_opts),
-    opt.(1, "clear", "Clear the queue", [])
-  ]
-
   @slash_commands [
     {"ping", "Pong", []},
     {"play", "Play a song or resume playback", @play_opts},
-    {"queue", "Manage the song queue", @queue_opts},
+    {"queue", "Manage the song queue", Sergei.Commands.Queue.subcommands()},
     {"pause", "Pause media playback", []},
     {"stop", "Stop media playback and leave the voice channel", []},
     {"song", "What song is currently playing?", []}

lib/sergei/commands/queue.ex

@@ -1,4 +1,23 @@
 defmodule Sergei.Commands.Queue do
+  # Translate params to list of maps
+  opt = fn type, name, desc, opts ->
+    %{type: type, name: name, description: desc}
+    |> Map.merge(Enum.into(opts, %{}))
+  end
+
+  @queue_add_opts [
+    opt.(3, "url", "URL of the audio to queue", required: true)
+  ]
+
+  @queue_commands [
+    opt.(1, "add", "Add a song to the queue", options: @queue_add_opts),
+    opt.(1, "clear", "Clear the queue", [])
+  ]
+
+  def subcommands() do
+    @queue_commands
+  end
+
   @spec handle(integer(), String.t(), [%{name: String.t(), value: String.t()}]) ::
           {:ok, String.t()} | {:err, String.t()}
   def handle(guild_id, "add", opts) do