Init commit

README.markdown

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+PAGSEGURO
+=========
+
+Este é um plugin do Ruby on Rails que permite utilizar o [PagSeguro](http://pagseguro.uol.com.br/), gateway de pagamentos do [UOL](http://uol.com.br).
+
+COMO USAR
+---------
+
+### Configuração
+
+[TODO]
+
+### Montando o formulário
+
+[TODO]
+
+### Recebendo notificações
+
+[TODO]
+
+### Enviando notificações
+
+[TODO]
+
+AUTOR:
+------
+
+Nando Vieira (<http://simplesideias.com.br>)
+
+Recomendar no [Working With Rails](http://www.workingwithrails.com/person/7846-nando-vieira)
+
+LICENÇA:
+--------
+
+(The MIT License)
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

init.rb

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+require File.dirname(__FILE__) + "/lib/pagseguro"
+
+if defined?(Rails)
+  %w(action_controller_ext helper).each do |f|
+    require File.dirname(__FILE__) + "/lib/pagseguro/#{f}"
+  end
+
+  ActionView::Base.send(:include, PagseguroHelper)
+  ActionController::Base.send(:include, PagSeguro::ActionController)
+end

lib/pagseguro.rb

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+require "net/https"
+require "uri"
+require "time"
+
+%w(notification order).each do |f|
+  require File.join(File.dirname(__FILE__), "pagseguro", f)
+end
+
+module PagSeguro
+  extend self
+
+  # The path to the configuration file
+  if defined?(Rails)
+    CONFIG_FILE = File.join(Rails.root, "config", "pagseguro.yml")
+  else
+    CONFIG_FILE = "config/pagseguro.yml"
+  end
+
+  # PagSeguro receives all invoices in this URL. If developer mode is enabled,
+  # then the URL will be /pagseguro_developer/invoice
+  GATEWAY_URL = "https://pagseguro.uol.com.br/security/webpagamentos/webpagto.aspx"
+
+  # Hold the config/pagseguro.yml contents
+  @@config = nil
+
+  # Initialize the developer mode if `developer`
+  # configuration is set
+  def init!
+    # check if configuration file is already created
+    unless File.exist?(CONFIG_FILE)
+      puts "=> [PagSeguro] The configuration could not be found at #{CONFIG_FILE.inspect}"
+      return
+    end
+
+    # The developer mode is enabled? So install it!
+    developer_mode_install! if developer?
+  end
+
+  # The gateway URL will point to a local URL is
+  # app is running in developer mode
+  def gateway_url
+    if developer?
+      File.join "/pagseguro_developer/create"
+    else
+      GATEWAY_URL
+    end
+  end
+
+  # Reader for the `developer` configuration
+  def developer?
+    config["developer"] == true
+  end
+
+  # The developer mode install will add a controller to the
+  # load path and set the URL routing to /pagseguro_developer/:action/:id
+  # For now, there are only 1 action available: create
+  def developer_mode_install!
+    controller_path = File.dirname(__FILE__) + "/pagseguro/controllers"
+
+    $LOAD_PATH << controller_path
+
+    if defined?(ActiveSupport::Dependencies)
+      ActiveSupport::Dependencies.load_paths << controller_path
+    elsif defined?(Dependencies.load_paths)
+      Dependencies.load_paths << controller_path
+    else
+      puts "=> [PagSeguro] Rails version too old for developer mode to work" and return
+    end
+
+    ::ActionController::Routing::RouteSet.class_eval do
+      next if defined?(draw_with_pagseguro_map)
+
+      def draw_with_pagseguro_map
+        draw_without_pagseguro_map do |map|
+          map.named_route "pagseguro_developer", 
+            "/pagseguro_developer/:action/:id",
+            :controller => "pagseguro_developer"
+
+          yield map
+        end
+      end
+
+      alias_method_chain :draw, :pagseguro_map
+    end
+  end
+
+  def config
+    raise MissingConfigurationException, "file not found on #{CONFIG_FILE.inspect}" unless File.exist?(CONFIG_FILE)
+
+    # load file if is not loaded yet
+    @@config ||= YAML.load_file(CONFIG_FILE)
+
+    # raise an exception if the environment hasn't been set 
+    # or if file is empty
+    if @@config == false || !@@config[RAILS_ENV]
+      raise MissingEnvironmentException, ":#{RAILS_ENV} environment not set on #{CONFIG_FILE.inspect}"
+    end
+
+    # retrieve the environment settings
+    @@config[RAILS_ENV]
+  end
+
+  # exceptions
+  class MissingEnvironmentException < StandardError; end
+  class MissingConfigurationException < StandardError; end
+end
+
+PagSeguro.init!

lib/pagseguro/action_controller_ext.rb

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+module PagSeguro
+  module ActionController
+    private
+      def pagseguro_status(&block)
+        return unless request.post?
+
+        _notification = PagSeguro::Notification.new(params)
+        yield _notification if _notification.valid?
+      end
+  end
+end

lib/pagseguro/controllers/pagseguro_developer_controller.rb

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+class PagseguroDeveloperController < ApplicationController
+  skip_before_filter :verify_authenticity_token
+  PAGSEGURO_ORDERS_FILE = File.join(Rails.root, "tmp", "pagseguro-#{RAILS_ENV}.yml")
+
+  def create
+    require "FileUtils" unless defined?(FileUtils)
+
+    # create the orders file if doesn't exist
+    FileUtils.touch(PAGSEGURO_ORDERS_FILE) unless File.exist?(PAGSEGURO_ORDERS_FILE)
+
+    # if file is empty, false is returned;
+    # default to a empty hash is this case
+    orders = YAML.load_file(PAGSEGURO_ORDERS_FILE) || {}
+
+    # add a new order, associating it to the order id
+    orders[params[:ref_transacao]] = params.except(:controller, :action, :only_path, :authenticity_token)
+
+    # save the file
+    File.open(PAGSEGURO_ORDERS_FILE, "w+") do |f|
+      f << orders.to_yaml
+    end
+
+    # redirect to the configuration url
+    redirect_to PagSeguro.config["return_to"]
+  end
+end

lib/pagseguro/helper.rb

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+module PagseguroHelper
+  PAGSEGURO_FORM_VIEW = File.expand_path(File.dirname(__FILE__) + "/views/_form.html.erb")
+
+  def pagseguro_form(order, options={})
+    options = {
+      :encoding => "utf-8",
+      :submit => "Pagar com PagSeguro"
+    }.merge(options)
+
+    render :file => PAGSEGURO_FORM_VIEW, :locals => {:options => options, :order => order}
+  end
+end