From a6fc4a092c5896a620549c5049887345a865ecdd Mon Sep 17 00:00:00 2001
From: Jacob Gable <jacob.gable@gmail.com>
Date: Wed, 18 Jul 2012 21:39:40 -0500
Subject: [PATCH] Adding some helpful errors for missing environment variables

---
 src/irc.coffee | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/irc.coffee b/src/irc.coffee
index 6864702..312033e 100644
--- a/src/irc.coffee
+++ b/src/irc.coffee
@@ -73,9 +73,19 @@ class IrcBot extends Adapter
   command: (command, strings...) ->
     @bot.send command, strings...
 
+  checkCanStart: ->
+    if not process.env.HUBOT_IRC_NICK or @robot.name
+      throw new Error("HUBOT_IRC_NICK is not defined; try: export HUBOT_IRC_NICK='mybot'")
+    else if not process.env.HUBOT_IRC_ROOMS
+      throw new Error("HUBOT_IRC_ROOMS is not defined; try: export HUBOT_IRC_ROOMS='#myroom'")
+    else if not process.env.HUBOT_IRC_SERVER
+      throw new Error("HUBOT_IRC_SERVER is not defined: try: export HUBOT_IRC_SERVER='irc.myserver.com'")
+
   run: ->
     self = @
 
+    do @checkCanStart
+
     options =
       nick:     process.env.HUBOT_IRC_NICK or @robot.name
       port:     process.env.HUBOT_IRC_PORT