Rearrange lib/core.ex code

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

lib/core.ex

@@ -5,6 +5,26 @@ defmodule Omnibot.Core do
 
   @default_config quit_after: 180, ping_after: 60, channels: :all
   
+  ## Client API
+
+  defp add_channel(channel) do
+    update_state(fn cfg = %{channels: channels} -> %{cfg | channels: MapSet.put(channels, channel)} end)
+  end
+  
+  defp remove_channel(channel) do
+    update_state(fn cfg = %{channels: channels} -> %{cfg | channels: MapSet.delete(channels, channel)} end)
+  end
+
+  defp last_reply() do
+    state().last_reply
+  end
+
+  defp update_last_reply(last_reply) do
+    update_state(fn cfg -> %{cfg | last_reply: last_reply} end)
+  end
+
+  ## Server callbacks
+
   @impl true
   def children(_cfg) do
     [{Task.Supervisor, name: Omnibot.Core.PingWatchers}]
@@ -84,21 +104,7 @@ defmodule Omnibot.Core do
     Enum.each(to_part, fn channel -> Irc.part(irc, channel) end)
   end
 
-  defp add_channel(channel) do
-    update_state(fn cfg = %{channels: channels} -> %{cfg | channels: MapSet.put(channels, channel)} end)
-  end
-  
-  defp remove_channel(channel) do
-    update_state(fn cfg = %{channels: channels} -> %{cfg | channels: MapSet.delete(channels, channel)} end)
-  end
-
-  defp last_reply() do
-    state().last_reply
-  end
-
-  defp update_last_reply(last_reply) do
-    update_state(fn cfg -> %{cfg | last_reply: last_reply} end)
-  end
+  ## Ping watcher worker
   
   defp ping_watcher(irc) do
     since_reply = Util.now_unix() - last_reply()