Add nickserv plugin

This allows the bot to register itself and login.

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

plugins/nickserv.py

@@ -0,0 +1,50 @@
+import logging
+from typing import Sequence
+
+from asyncirc.protocol import IrcProtocol
+from irclib.parser import Message, Prefix
+from omnibot.plugin import Plugin
+
+
+log = logging.getLogger(__name__)
+
+
+class NickServ(Plugin):
+    def get_message_types(self) -> Sequence[str]:
+        return ["001"]
+
+    @property
+    def password(self) -> str:
+        return self.plugin_config["password"]
+
+    @property
+    def email(self) -> str:
+        return self.plugin_config.get("email", "omnibot@omni.bot")
+
+    @property
+    def nickserv(self) -> str:
+        return self.plugin_config.get("nickserv", "NickServ")
+
+    async def on_message(self, conn: IrcProtocol, channel: str, who: Prefix, line: str):
+        # XXX : channel is the wrong nomenclature here and kind of an artifact of the API design
+        log.info("Registering with NickServ")
+        self.send_message(
+            conn,
+            Message(
+                None,
+                None,
+                "PRIVMSG",
+                self.nickserv,
+                "register",
+                self.password,
+                self.email,
+            ),
+        )
+        log.info("Authenticating with NickServ")
+        self.send_message(
+            conn,
+            Message(None, None, "PRIVMSG", self.nickserv, "identify", self.password),
+        )
+
+
+PLUGIN_TYPE = NickServ