Add helper to load config

lib/facebooker2.rb

@@ -2,11 +2,35 @@
 require "mogli"
 
 module Facebooker2
-  
+  class NotConfigured < Exception; end
   class << self
     attr_accessor :api_key, :secret, :app_id
   end
     
+  def self.secret
+    @secret || raise_unconfigured_exception    
+  end
+  
+  def self.app_id
+    @app_id || raise_unconfigured_exception
+  end
+  
+  def self.raise_unconfigured_exception
+    raise NotConfigured.new("No configuration provided for Facebooker2. Either set the app_id and secret or call Facebooker2.load_facebooker_yaml in an initializer")
+  end
+  
+  def self.configuration=(hash)
+    self.api_key = hash[:api_key]
+    self.secret = hash[:secret]
+    self.app_id = hash[:app_id]
+  end
+  
+  def self.load_facebooker_yaml
+    config = YAML.load(File.read(File.join(::Rails.root,"config","facebooker.yml")))[::Rails.env]
+    raise NotConfigured.new("Unable to load configuration for #{::Rails.env} from facebooker.yml. Is it set up?") if config.nil?
+    self.configuration = config.with_indifferent_access
+  end
+  
   def self.cast_to_facebook_id(object)
     if object.kind_of?(Mogli::Profile)
       object.id

lib/facebooker2/rails/controller.rb

@@ -4,6 +4,12 @@ module Facebooker2
   module Rails
     module Controller
       
+      def self.included(controller)
+        controller.helper Facebooker2::Rails::Helpers
+        controller.helper_method :current_facebook_user
+        controller.helper_method :current_facebook_client
+      end
+      
       def current_facebook_user
         fetch_client_and_user_from_cookie
         @_current_facebook_user
@@ -19,17 +25,24 @@ module Facebooker2
         app_id = Facebooker2.app_id
         if (hash_data = fb_cookie_hash_for_app_id(app_id)) and
           fb_cookie_signature_correct?(fb_cookie_hash_for_app_id(app_id),Facebooker2.secret)
-          @_current_facebook_client = Mogli::Client.new(hash_data["access_token"],hash_data["expires"].to_i)
-          @_current_facebook_user = Mogli::User.new(:id=>hash_data["uid"])
-          @_current_facebook_user.client = @_current_facebook_client
+          client = Mogli::Client.new(hash_data["access_token"],hash_data["expires"].to_i)
+          user = Mogli::User.new(:id=>hash_data["uid"])
+          user.client = @_current_facebook_client
+          fb_sign_in_user_and_client(user,client)
         end
         @_fb_user_fetched = true
       end
       
+      def fb_sign_in_user_and_client(user,client)
+        @_current_facebook_user = user
+        @_current_facebook_client = client
+        @_fb_user_fetched = true
+      end
+      
       def fb_cookie_hash_for_app_id(app_id)
         return nil unless fb_cookie_for_app_id?(app_id)
         hash={}
-        data = fb_cookie_for_app_id(app_id)
+        data = fb_cookie_for_app_id(app_id).gsub(/"/,"")
         data.split("&").each do |str|
           parts = str.split("=")
           hash[parts.first] = parts.last

lib/facebooker2/rails/helpers/javascript.rb

@@ -6,7 +6,7 @@ module Facebooker2
           opts = Hash.new(true).merge!(options)
           cookie = opts[:cookie]
           status = opts[:status]
-          status = opts[:xfbml]
+          xfbml = opts[:xfbml]
           js = <<-JAVASCRIPT
           <div id="fb-root"></div>
           <script>

spec/config/facebooker.yml

@@ -0,0 +1,3 @@
+spec:
+  app_id: 1234fromyaml
+  secret: fromyaml

spec/facebooker2_spec.rb

@@ -16,6 +16,35 @@ describe Facebooker2 do
       Facebooker2.app_id = "12345"
       Facebooker2.app_id.should == "12345"      
     end
+    
+    it "should allow setting the configuration in bulk" do
+      Facebooker2.configuration = {:app_id=>1234,:secret=>"secret"}
+      Facebooker2.app_id.should == 1234
+      Facebooker2.secret.should == "secret"
+      
+    end
+    
+    it "raises an exception if you access a nil app_id" do
+      Facebooker2.app_id = nil
+      lambda do 
+        Facebooker2.app_id
+      end.should raise_error(Facebooker2::NotConfigured)
+    end
+    
+    it "can load the configuration via facebooker.yml" do
+      ::Rails=mock("rails",:env=>"spec",:root=>File.dirname(__FILE__))
+      Facebooker2.load_facebooker_yaml
+      Facebooker2.app_id.should == "1234fromyaml"
+      Facebooker2.secret.should == "fromyaml"
+    end
+    
+    it "raises an error if there is no configuration for the env" do
+      ::Rails=mock("rails",:env=>"invalid",:root=>File.dirname(__FILE__))
+      lambda do
+        Facebooker2.load_facebooker_yaml
+      end.should raise_error(Facebooker2::NotConfigured)
+      
+    end
   end
   
   describe "Casting to facebook_id" do

spec/rails/controller_spec.rb

@@ -1,6 +1,6 @@
 require "spec_helper"
 
-class FakeController
+class FakeController < ActionController::Base
   include Facebooker2::Rails::Controller
 end
 
@@ -9,12 +9,19 @@ describe Facebooker2::Rails::Controller do
     Facebooker2.app_id = "12345"
     Facebooker2.secret = "42ca6de519d53f6e0420247a4d108d90"
   end
+  
+  let :controller do
+    controller = FakeController.new
+    controller.stub!(:cookies).and_return("fbs_12345"=>"\"access_token=114355055262088|57f0206b01ad48bf84ac86f1-12451752|63WyZjRQbzowpN8ibdIfrsg80OA.&expires=0&secret=1e3375dcc4527e7ead0f82c095421690&session_key=57f0206b01ad48bf84ac86f1-12451752&sig=4337fcdee4cc68bb70ec495c0eebf89c&uid=12451752\"")
+    controller
+  end
+  
+  
+  it "should include helpers" do
+    controller.master_helper_module.ancestors.should include(Facebooker2::Rails::Helpers)
+  end
+  
   describe "Cookie handling" do
-    let :controller do
-      controller = FakeController.new
-      controller.stub!(:cookies).and_return("fbs_12345"=>"access_token=114355055262088|57f0206b01ad48bf84ac86f1-12451752|63WyZjRQbzowpN8ibdIfrsg80OA.&expires=0&secret=1e3375dcc4527e7ead0f82c095421690&session_key=57f0206b01ad48bf84ac86f1-12451752&sig=4337fcdee4cc68bb70ec495c0eebf89c&uid=12451752")
-      controller
-    end
     
     it "knows if a cookie exists for this app" do
       controller.fb_cookie_for_app_id?(12345).should be_true
@@ -75,12 +82,20 @@ describe Facebooker2::Rails::Controller do
   end
   
   describe "Methods" do
-    it "has a current_facebook_user" do
     
+    it "allows you to sign in a user" do
+      controller.fb_sign_in_user_and_client(Mogli::User.new,Mogli::Client.new)
+    end
+    it "has a current_facebook_user" do
+      user = mock("user")
+      controller.fb_sign_in_user_and_client(user,Mogli::Client.new)
+      controller.current_facebook_user.should == user
     end
     
     it "has a current_facebook_client" do
-      
+      client = mock("client")
+      controller.fb_sign_in_user_and_client(Mogli::User.new,client)
+      controller.current_facebook_client.should == client
     end
     
   end