Airtime API Hubot script support

src/scripts/airtime.coffee

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+# Description:
+#   Airtime API Interaction for Hubot (http://www.sourcefabric.org/en/airtime/)
+#
+# Dependencies:
+#   None
+#
+# Configuration:
+#   HUBOT_AIRTIME_URL - URL to Airtime installation (ie.: http://airtime.myhost.com)
+#
+#   How to find you HUBOT_AIRTIME_URL: 
+#   If you log into your Airtime installation at http://airtime.myhost.com/login 
+#   then the HUBOT_AIRTIME_URL will be "http://airtime.myhost.com" (without the quotes).
+#   
+#   To launch hubot locally with the correct environment variable value: 
+#   HUBOT_AIRTIME_URL=http://airtime.myhost.com ./bin/hubot
+#   To add the correct environment variable to an existing and working Heroku deployment, you'll issue something like: 
+#   heroku config:add HUBOT_AIRTIME_URL=http://airtime.myhost.com
+#
+# Commands:
+#   hubot airtime now - Display what's currently broadcasted on this Airtime installation
+#   hubot airtime next track - Displays what will be the next track to be broadcasted on Airtime
+#   hubot airtime next show - Displays what will be the next show broadcasted on Airtime
+#   hubot airtime previous track - Displays what has just been broadcasted on Airtime
+#
+# Notes: 
+#   Airtime is a free and open source radio automation software (http://www.sourcefabric.org/en/airtime/)
+#   Source code is available on GitHub (https://github.com/sourcefabric/Airtime)
+#   Airtime Pro is the SaaS version, hosted by its creators Sourcefabric, of open source Airtime (http://www.sourcefabric.org/en/airtime/airtimepro)
+# 
+# Author:
+#   sjourdan
+
+validEnvironment = (msg) ->
+  if process.env.HUBOT_AIRTIME_URL
+    true
+  else
+    msg.send "Please set the HUBOT_AIRTIME_URL environment variable."
+    false
+
+module.exports = (robot) ->
+
+  robot.respond /airtime now/i, (msg) ->
+    return unless validEnvironment(msg)
+    msg.http("#{process.env.HUBOT_AIRTIME_URL}/api/live-info")
+    .get() (err, res, body) ->
+      json= JSON.parse(body)
+      track = json.current.name
+      show = json.currentShow[0].name
+      msg.send "Now playing: #{track} on #{show}" 
+
+  robot.respond /airtime next track/i, (msg) ->
+    return unless validEnvironment(msg)
+    msg.http("#{process.env.HUBOT_AIRTIME_URL}/api/live-info")
+    .get() (err, res, body) ->
+      json= JSON.parse(body)
+      track = json.next.name
+      starts = json.next.starts.split " "
+      time = starts[1]
+      tz = json.timezone
+      msg.send "Coming next: #{track} at #{time} #{tz}" 
+
+  robot.respond /airtime next show/i, (msg) ->
+    return unless validEnvironment(msg)
+    msg.http("#{process.env.HUBOT_AIRTIME_URL}/api/live-info")
+    .get() (err, res, body) ->
+      json= JSON.parse(body)
+      show = json.nextShow[0].name
+      starts = json.nextShow[0].starts.split " "
+      time = starts[1]
+      tz = json.timezone
+      msg.send "Next show is: #{show} at #{time} #{tz}" 
+
+  robot.respond /airtime previous track/i, (msg) ->
+    return unless validEnvironment(msg)
+    msg.http("#{process.env.HUBOT_AIRTIME_URL}/api/live-info")
+    .get() (err, res, body) ->
+      json= JSON.parse(body)
+      track = json.previous.name
+      starts = json.previous.starts.split " "
+      time = starts[1]
+      tz = json.timezone
+      msg.send "Just played: #{track} at #{time} #{tz}"