130 lines
3.7 KiB
Elixir
130 lines
3.7 KiB
Elixir
defmodule Omnibot.Plugin.Base do
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defmodule Hooks do
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defmacro __before_compile__(_env) do
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quote generated: true do
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@impl true
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def on_channel_msg(_irc, _channel, _nick, _line), do: nil
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@impl true
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def on_channel_msg(_irc, _channel, _nick, _cmd, _params), do: nil
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@impl true
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def on_join(_irc, _channel, _nick), do: nil
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@impl true
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def on_part(_irc, _channel, _nick), do: nil
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@impl true
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def on_kick(_irc, _channel, _nick, _target), do: nil
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@impl true
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def on_init(_cfg), do: nil
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@impl true
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def default_config(), do: @default_config
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def commands(), do: MapSet.to_list(@commands)
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end
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end
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end
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defmacro __using__([]) do
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quote do
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alias Omnibot.{Irc, Plugin}
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import Omnibot.Plugin.Base
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@behaviour Plugin.Base
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@impl Plugin.Base
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def on_msg(irc, msg) do
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# TODO - instead of using a router for modules, consider using a PubSub with a Registry:
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# https://hexdocs.pm/elixir/master/Registry.html#module-using-as-a-pubsub
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route_msg(irc, msg)
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end
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defp route_msg(irc, msg) do
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nick = msg.prefix.nick
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case String.upcase(msg.command) do
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"PRIVMSG" ->
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[channel | params] = msg.params
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line = Enum.join(params, " ")
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case String.split(line, " ") do
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[cmd | params] -> if Enum.member?(commands(), cmd),
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do: on_channel_msg(irc, channel, nick, cmd, params),
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else: on_channel_msg(irc, channel, nick, line)
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_ -> on_channel_msg(irc, channel, nick, line)
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end
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"JOIN" ->
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[channel | _] = msg.params
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on_join(irc, channel, nick)
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"PART" ->
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[channel | _] = msg.params
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on_part(irc, channel, nick)
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"KICK" ->
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[channel, target | _] = msg.params
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on_kick(irc, channel, nick, target)
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_ ->
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nil
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end
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end
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defoverridable Plugin.Base
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@commands MapSet.new()
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@default_config []
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@before_compile Omnibot.Plugin.Base.Hooks
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end
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end
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@callback on_msg(irc :: pid(), msg :: %Omnibot.Irc.Msg{}) :: any
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@callback on_channel_msg(irc :: pid(), channel :: String.t(), nick :: String.t(), line :: String.t()) :: any
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@callback on_channel_msg(
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irc :: pid(),
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channel :: String.t(),
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nick :: String.t(),
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cmd :: String.t(),
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params :: [String.t()]
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) :: any
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@callback on_join(irc :: pid(), channel :: String.t(), nick :: String.t()) :: any
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@callback on_part(irc :: pid(), channel :: String.t(), nick :: String.t()) :: any
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@callback on_kick(irc :: pid(), channel :: String.t(), nick :: String.t(), target :: String.t()) :: any
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@callback on_init(cfg :: any) :: any
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@callback default_config() :: any
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defmacro command(cmd, opts) do
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quote generated: true do
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@commands MapSet.put(@commands, unquote(cmd))
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@impl Omnibot.Plugin.Base
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def on_channel_msg(var!(irc), var!(channel), var!(nick), unquote(cmd), var!(params)) do
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unquote(opts[:do])
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end
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end
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end
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defmacro command(cmd, params, opts) do
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params =
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Enum.map(
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params,
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fn param ->
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case param do
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{_, _, _} -> quote(do: var!(unquote(param)))
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lit -> Macro.escape(lit)
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end
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end
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)
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quote generated: true do
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@commands MapSet.put(@commands, unquote(cmd))
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@impl Omnibot.Plugin.Base
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def on_channel_msg(var!(irc), var!(channel), var!(nick), unquote(cmd), unquote(params)) do
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unquote(opts[:do])
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end
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end
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end
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end
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