added Gowalla support

oa-oauth/lib/omniauth/oauth.rb

@@ -11,5 +11,6 @@ module Strategies
     autoload :GitHub,             'omniauth/strategies/github'
     autoload :ThirtySevenSignals, 'omniauth/strategies/thirty_seven_signals'
     autoload :Foursquare,         'omniauth/strategies/foursquare'
+    autoload :Gowalla,            'omniauth/strategies/gowalla'
   end
 end

oa-oauth/lib/omniauth/strategies/gowalla.rb

@@ -0,0 +1,60 @@
+require 'omniauth/oauth'
+require 'multi_json'
+
+module OmniAuth
+  module Strategies
+    #
+    # Authenticate to Gowalla utilizing OAuth 2.0 and retrieve
+    # basic user information.
+    #
+    # Usage:
+    #
+    #    use OmniAuth::Strategies::Gowalla, 'API Key', 'Secret Key'
+    #
+    # Options:
+    #
+    # <tt>:scope</tt> :: Extended permissions such as <tt>email</tt> and <tt>offline_access</tt> (which are the defaults).
+    class Gowalla < OAuth2
+      def initialize(app, api_key, secret_key, options = {})
+        options[:site] = 'https://api.gowalla.com/api/oauth'
+        options[:authorize_url] = 'https://gowalla.com/api/oauth/new'
+        options[:access_token_url] = 'https://api.gowalla.com/api/oauth/token'
+        super(app, :gowalla, api_key, secret_key, options)
+      end
+
+      def user_data
+        @data ||= MultiJson.decode(@access_token.get("/users/me.json"))
+      end
+
+      def request_phase(options = {})
+        options[:scope] ||= "email,offline_access"
+        super(options)
+      end
+
+      def user_info
+        {
+          'name' => "#{user_data['first_name']} #{user_data['last_name']}",
+          'nickname' => user_data["username"],
+          'first_name' => user_data["first_name"],
+          'last_name' => user_data["last_name"],
+          'location' => user_data["hometown"],
+          'description' => user_data["bio"],
+          'image' => user_data["image_url"],
+          'phone' => nil,
+          'urls' => {
+            'Gowalla' => "http://www.gowalla.com/#{user_data['url']}",
+            'Website' => user_data["website"]
+          }
+        }
+      end
+
+      def auth_hash
+        OmniAuth::Utils.deep_merge(super, {
+          'uid' => user_data["url"].split('/').last,
+          'user_info' => user_info,
+          'extra' => {'user_hash' => user_data}
+        })
+      end
+    end
+  end
+end

oa-oauth/spec/omniauth/strategies/gowalla_spec.rb

@@ -0,0 +1,13 @@
+require File.expand_path(File.dirname(__FILE__) + '/../../spec_helper')
+
+describe OmniAuth::Strategies::Gowalla do
+
+  it 'should subclass OAuth2' do
+    OmniAuth::Strategies::Gowalla.should < OmniAuth::Strategies::OAuth2
+  end
+
+  it 'should initialize with just api key and secret key' do
+    lambda{OmniAuth::Strategies::Gowalla.new({},'api_key','secret_key')}.should_not raise_error
+  end
+
+end