WIP: Supervisor-based plugin base

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

lib/core.ex

@@ -1,74 +0,0 @@
-defmodule Omnibot.Core do
-  use Omnibot.Plugin.GenServer
-  alias Omnibot.State
-
-  @default_config [channels: :all]
-
-  @impl true
-  def on_join(irc, channel, nick) do
-    cfg = State.cfg()
-    if nick == cfg.nick do
-      add_channel(channel)
-      # Sync if we join a channel we shouldn't be in
-      if !Enum.member?(State.all_channels(), channel),
-        do: sync_channels(irc)
-    end
-  end
-
-  @impl true
-  def on_part(irc, channel, nick) do
-    cfg = State.cfg()
-    if nick == cfg.nick do
-      remove_channel(channel)
-      # Sync if we join a channel we forcibly part a channel we shouldn't leave
-      if Enum.member?(State.all_channels(), channel),
-        do: sync_channels(irc)
-    end
-  end
-
-  @impl true
-  def on_kick(irc, channel, _nick, target) do
-    cfg = State.cfg()
-    if target == cfg.nick do
-      remove_channel(channel)
-      # Generally, being kicked is not intentionally leaving a channel, so always sync here
-      sync_channels(irc)
-    end
-  end
-
-  @impl true
-  def on_msg(irc, msg) do
-    case String.upcase(msg.command) do
-      "001" -> sync_channels(irc)
-      "PING" -> Irc.send_msg(irc, "PONG", msg.params)
-      _ -> route_msg(irc, msg)
-    end
-  end
-
-  @impl true
-  def on_init(_cfg) do
-    MapSet.new()
-  end
-
-  defp sync_channels(irc) do
-    desired = MapSet.new(State.all_channels())
-    present = state()
-
-    to_join = MapSet.difference(desired, present)
-      |> MapSet.to_list()
-    to_part = MapSet.difference(present, desired)
-      |> MapSet.to_list()
-
-    Enum.each(to_join, fn channel -> Irc.join(irc, channel) end)
-    Enum.each(to_part, fn channel -> Irc.part(irc, channel) end)
-  end
-
-  defp add_channel(channel) do
-    update_state(fn state -> MapSet.put(state, channel) end)
-  end
-  
-  defp remove_channel(channel) do
-    update_state(fn state -> MapSet.delete(state, channel) end)
-  end
-end
-