Further separate module agents and module impl

Add Omnibot.Module.Agent which implements the basic agent cfg + state
persistence functionality, which is then included in the Omnibot.Module.

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

lib/module/agent.ex

@@ -0,0 +1,43 @@
+defmodule Omnibot.Module.Agent do
+  defmacro __using__([]) do
+    quote do
+      import Omnibot.Module.Agent
+      alias Omnibot.Module
+      use Agent
+
+      def start_link(opts) do
+        cfg = opts[:cfg]
+        state = opts[:state] || on_init(cfg)
+
+        IO.inspect({__MODULE__, state})
+        Module.Agent.start_link(cfg, state, opts)
+      end
+
+      def cfg, do: Module.Agent.cfg(__MODULE__)
+      def state, do: Module.Agent.state(__MODULE__)
+
+      def update_state(update, timeout \\ 5000),
+        do: Module.Agent.update_state(__MODULE__, update, timeout)
+    end
+  end
+
+  def start_link(cfg, state, opts) do
+    Agent.start_link(fn -> {cfg, state} end, opts)
+  end
+
+  def cfg(agent) do
+    Agent.get(agent, fn {cfg, _} -> cfg end)
+  end
+
+  def state(agent) do
+    Agent.get(agent, fn {_, state} -> state end)
+  end
+
+  def update_state(agent, update, timeout \\ 5000) do
+    Agent.update(
+      agent,
+      fn {cfg, state} -> {cfg, apply(update, [state])} end,
+      timeout
+    )
+  end
+end

lib/module/base.ex

@@ -32,7 +32,6 @@ defmodule Omnibot.Module.Base do
     quote do
       alias Omnibot.{Irc, Module}
       import Omnibot.Module.Base
-      require Logger
 
       @behaviour Module.Base
 

lib/module/module.ex

@@ -2,28 +2,7 @@ defmodule Omnibot.Module do
   defmacro __using__([]) do
     quote do
       use Omnibot.Module.Base
-      use Agent
-
-      def start_link(opts) do
-        cfg = opts[:cfg]
-        Agent.start_link(fn -> {cfg, on_init(cfg)} end, opts ++ [name: __MODULE__])
-      end
-
-      def cfg do
-        Agent.get(__MODULE__, fn {cfg, _} -> cfg end)
-      end
-
-      def state do
-        Agent.get(__MODULE__, fn {_, state} -> state end)
-      end
-
-      def update_state(update, timeout \\ 5000) do
-        Agent.update(
-          __MODULE__,
-          fn {cfg, state} -> {cfg, apply(update, [state])} end,
-          timeout
-        )
-      end
+      use Omnibot.Module.Agent
     end
   end
 end