GAAH - Google Apps API Helper

CLIENT_KEY = '000000000000.apps.googleusercontent.com'
CLIENT_SECRET = 'abcdefghijklmnopqrstuvwx'
REDIRECT_URI = 'http://localhost:3021/oauth2' #as set in your application in Google

# Setup
require 'gaah'
Gaah.setup_oauth2(CLIENT_KEY, CLIENT_SECRET, REDIRECT_URI)

# Obtain a valid OAuth2 token
gh = Gaah::ApiClient.new
authorization_url = gh.oauth2_authorization_uri

...redirect the user to login on the authorization_url. If authorized, the user will be redirected back with a valid access_code...

gh.access_code='#whatever_returned_by_google'

# Store your access token, refresh token somewhere for future usage

gh.storable_token #=> Store the token somewhere, db, etc

#... then in the future ...

gh = Gaah::OAuth.new(stored_token)

# Get users
users = Gaah::Directory::Api.users(gh)
user = users.first
user.id    # "https://apps-apis.google.com/a/feeds/example.com/user/2.0/bobert"
user.name  # "Bobert Jones"
user.title # "bobert"

# Get calendar events
events = user.events(gh)
event = events.first
event.title           # "Meeting with Joe"
event.when.start_time # 2013-04-16 13:00:00 -0400

# Get calendar resources *
rooms = Gaah::Resource::Api.resources(gh)
room = rooms.first
room.name # "U.S.S. Distill"
room.type # "Conference room"