From b94f71465252a3c63f3c4c8ac2c2e8ae34f2cce4 Mon Sep 17 00:00:00 2001
From: Szymon Pilkowski <szymon.pilkowski@gmail.com>
Date: Fri, 7 Mar 2014 01:55:56 +0100
Subject: [PATCH] alternateNick support, ERR_NICKNAMEINUSE handling, nick
 suffixing

---
 examples/simple.js |  1 +
 lib/ircb.js        | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/examples/simple.js b/examples/simple.js
index 76abb5c..e7c717c 100644
--- a/examples/simple.js
+++ b/examples/simple.js
@@ -6,6 +6,7 @@ var irc = ircb({
   username: 'mycoolbot',
   realName: 'mycoolbot',
   nick: 'mycoolbot',
+  alternateNick: 'mycoolerbot',
   channels: ['#node.js']
 }, function () {
   irc.on('names', function (channel, names) {
diff --git a/lib/ircb.js b/lib/ircb.js
index 72cf54f..4edad1a 100644
--- a/lib/ircb.js
+++ b/lib/ircb.js
@@ -24,6 +24,7 @@ var IRCb = function (options, cb) {
   self.rejectUnauthorized = !!options.rejectUnauthorized;
   self.port = options.port || (self.secure ? 6697 : 6667);
   self.nick = options.nick;
+  self.alternateNick = options.alternateNick;
   self.password = options.password;
 
   self.channels = [];
@@ -158,9 +159,23 @@ IRCb.prototype._processMessage = function (message) {
         delete this._namesReplies[channel];
       }
       break;
+
+    case "ERR_NICKNAMEINUSE":
+      var newNick;
+      if (this.nick == message.middle[1] && this.alternateNick) {
+        newNick = this.alternateNick;
+      } else {
+        newNick = this._suffixNick(message.middle[1]);
+      }
+      this.nick_(newNick);
+      break;
   }
 };
 
+IRCb.prototype._suffixNick = function(baseNick) {
+  return baseNick + "_";
+};
+
 IRCb.prototype.pass = function (pass, cb) {
   this.write('PASS ' + pass, cb);
 };