Moved to Rails 3... again

README.textile

@@ -0,0 +1,34 @@
+h1. przelewy24
+
+h2. What it is?
+
+* This is the gem that consist of generator, to generate files to play with polish payment service "Przelewy24.pl":http://www.przelewy24.pl
+* Generator creates model, controller and views for dealing with Przelewy24.
+
+h2. What for?
+
+* Application that have products to sell finally sends the form to Przelewy24 service. All transaction security and verification is held by generated files and Przelewy24 side.
+
+h2. Installation on Rails 3 app
+
+Add this to your Gemfile
+@gem 'przelewy24'@
+
+Then install it
+@bundle install@
+
+Generate the files for Przelewy24 with ModelName and Przelewy24 SellerID
+@rails generate przelewy24 payment 1034@
+
+and you are free to connect your transactions with Przelewy24 payment service.
+
+h2. Contribute
+
+Thanks for forking and helping!
+
+major issues:
+- rspecs or tests to gem needs to be done
+
+h3. License
+
+Copyright (c) 2010 ["Jakub Godawa":http://github.com/vysogot], released under the MIT license

Rakefile

@@ -0,0 +1,24 @@
+require 'rake/testtask'
+
+Rake::TestTask.new do |test|
+  test.pattern = 'test/**/*_test.rb'
+  test.libs << 'test'
+end
+
+
+begin
+  require "jeweler"
+  Jeweler::Tasks.new do |gem|
+    gem.name = "przelewy24"
+    gem.homepage = "http://github.com/rails3-przelewy24"
+    gem.summary = "This is a Rails engine to play with Polish payment service Przelewy24.pl"
+    gem.description = "Gem consist of a generator 'przelewy24'. Application that have products for sale finally sends the form to Przelewy24 service. All transaction security and verification is held by generated files and Przelewy24 side."
+    gem.email = "jakub.godawa@gmail.com"
+    gem.authors = ["Jakub Godawa"]
+    gem.files = Dir["{lib}/**/*", "{app}/**/*", "{public}/**/*", "{config}/**/*"]
+    gem.rubyforge_project = "rails-p24"
+  end
+  Jeweler::GemcutterTasks.new
+rescue
+  puts "Jeweler or dependency not available."
+end

VERSION

@@ -0,0 +1 @@
+0.0.3

lib/generators/przelewy24/USAGE

@@ -0,0 +1,14 @@
+Description:
+    Stubs out new model and controller for Przelewy24 payment service.
+    Pass the name of the model you want to be responsible for that.
+
+Example:
+    rails generate przelewy24 Payment
+
+    This will create:
+        app/models/payment.rb
+        app/controllers/payments_controller.rb
+        app/views/payments/...
+        db/migration/*_create_payments.rb
+        config/locales/przelewy24.yml
+        routes...

lib/generators/przelewy24/przelewy24_generator.rb

@@ -0,0 +1,76 @@
+class Przelewy24Generator < Rails::Generators::Base
+  source_root File.expand_path('../templates', __FILE__)
+  argument :class_name, :type => :string, :default => "Payment"
+  argument :seller_id, :type => :string, :default => "1000"
+  class_option :migration, :type => :boolean, :default => true, :desc => "Include migration file."
+
+  def generate_files
+
+    # Generate views
+    views.each do |view|
+      template "views/#{view}.html.erb", "app/views/#{plural_name}/#{view}.html.erb"
+    end
+
+    # Copy locales
+    copy_file "przelewy24.yml", "config/locales/przelewy24.yml"
+
+    # Generate controller
+    template 'controller.rb', "app/controllers/#{plural_name}_controller.rb"
+
+    # Generate helper
+    template 'helper.rb', "app/helpers/#{plural_name}_helper.rb"
+
+    # Generate model
+    template 'model.rb', "app/models/#{singular_name}.rb"
+
+    # Generate routes
+    routes_string=<<FINITO
+resources :#{plural_name} do
+    collection do
+      get  'confirm'
+      get  'error' 
+      post 'ok' 
+    end
+  end
+FINITO
+
+    route(routes_string)
+
+    # Generate migration
+    if options.migration?
+      # #{Time.now.utc.strftime("%Y%m%d%H%M%S")}_
+      migration_file_name = "#{Time.now.utc.strftime("%Y%m%d")}_create_#{table_name}"
+      template 'migration.rb', "db/migrate/#{migration_file_name}.rb"
+
+      # migrate
+      rake("db:migrate", :env => :development)
+    end
+  end
+
+  private
+
+  def views
+    %w(new index _form show ok error confirm)
+  end
+
+
+  # imagine model: SuperService
+  def controller_class_name
+    class_name.pluralize # SuperServices
+  end
+
+  def singular_name
+    class_name.underscore # super_service
+  end
+
+  def migration_name
+    "Create#{controller_class_name}" # CreateSuperServices
+  end
+
+  def plural_name
+    singular_name.pluralize # super_services
+  end
+
+  alias table_name plural_name # super_services
+  alias file_name singular_name # super_service
+end

lib/generators/przelewy24/templates/controller.rb

@@ -0,0 +1,113 @@
+# responsible for transactions and connection with payments service
+# Przelewy24.pl
+class <%= controller_class_name %>Controller < ApplicationController
+
+  # requests from Przelewy24.pl
+  protect_from_forgery :except => [:ok, :error]
+
+  # If you want to use ssl, uncomment that line
+  # before_filter :require_ssl, :only => [:new, :confirm]
+
+  def index
+    @<%= table_name %> = <%= class_name %>.all
+  end
+
+  def show
+    @<%= file_name %> = <%= class_name %>.find(params[:id])
+  end
+
+  def new
+    @<%= file_name %> = <%= class_name %>.new
+  end
+
+  # create new transaction with <%= file_name %> before verifing it with <%= file_name %> confirm form
+  def create
+    @<%= file_name %> = <%= class_name %>.new(params[:<%= file_name %>])
+
+    if @<%= file_name %>.save
+      flash[:notice] = t('transaction_created')
+      session[:<%= file_name %>_id] = @<%= file_name %>.id
+
+      redirect_to confirm_<%= plural_name %>_url
+    else
+      render :action => 'new'
+    end
+  end
+
+  def destroy
+    @<%= file_name %> = <%= class_name %>.find(params[:id])
+    @<%= file_name %>.destroy
+    flash[:notice] = t('transaction_destroyed')
+    redirect_to <%= table_name %>_url
+  end
+
+  # transaction confirmation
+  def confirm
+    @<%= file_name %> = <%= class_name %>.find(session[:<%= file_name %>_id])
+  end
+
+  # first verification from Przelewy24.pl
+  def ok
+    @<%= file_name %> = <%= class_name %>.find_by_session_id(params[:p24_session_id])
+    if @<%= file_name %> && @<%= file_name %>.update_attributes(:order_id => params[:p24_order_id], 
+                                                                :metoda => params[:p24_karta], 
+                                                                :order_id_full => params[:p24_order_id_full])
+
+      # verification with service - name in polish to be consistent with current PHP spec
+      przelewy24_weryfikuj
+    else
+      flash[:error] = 'Transaction not found'
+      redirect_to <%= table_name %>_url
+    end
+  end
+
+  def error
+  end
+
+  private
+
+  # Przelewy24.pl final verification process
+  def przelewy24_weryfikuj
+
+    # verification script url
+    url = URI.parse('https://secure.przelewy24.pl/transakcja.php')
+
+    # post request with '&' PHP connectors
+    req = Net::HTTP::Post.new(url.path)
+    req.set_form_data(@<%= file_name %>.attributes_for_verify, '&')
+
+    # create new http object with ssl usage
+    http = Net::HTTP.new(url.host, url.port)
+    http.use_ssl = true
+    
+    # UNCOMMENT THAT IF OpenSSL throws unwanted errors
+    http.verify_mode = OpenSSL::SSL::VERIFY_NONE
+
+    # get the response from Przelewy24.pl
+    res = http.start {|http| http.request(req) }
+
+    case res
+    when Net::HTTPSuccess, Net::HTTPRedirection
+      results = res.body.split("\r\n")
+      if results[1] == "TRUE"
+
+        # check if transaction is not already used
+        unless @<%= file_name %>.is_verified
+          @<%= file_name %>.update_attribute(:is_verified, true)
+          return
+        else
+          error_desc = t('transaction_already_used')
+        end
+      else
+        error_desc = "#{results[2]} #{results[3]}"
+      end
+    else
+      error_desc = t('connection_error') 
+    end
+
+    @<%= file_name %>.update_attribute(:error_code, results[2])
+    # display error flash and redirect to error action
+    flash[:error] = error_desc
+    redirect_to :action => :error
+  end
+end

lib/generators/przelewy24/templates/helper.rb

@@ -0,0 +1,2 @@
+module <%= controller_class_name %>Helper
+end

lib/generators/przelewy24/templates/migration.rb

@@ -0,0 +1,28 @@
+class <%= migration_name %> < ActiveRecord::Migration
+  def self.up
+    create_table :<%= table_name %> do |t|
+      t.string :session_id
+      t.string :id_sprzedawcy
+      t.integer :kwota
+      t.string :klient
+      t.string :adres
+      t.string :kod
+      t.string :miasto
+      t.string :kraj
+      t.string :email
+      t.text :opis
+      t.integer :order_id
+      t.integer :order_id_full
+      t.string :error_code
+      t.string :language
+      t.integer :metoda
+      t.boolean :is_verified, :default => false
+
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :<%= table_name %>
+  end
+end

lib/generators/przelewy24/templates/model.rb

@@ -0,0 +1,90 @@
+# responsible for process with payment service Przelewy24.pl
+class <%= class_name %> < ActiveRecord::Base
+
+  before_create :set_session_id
+
+  SELLER_ID = <%= seller_id %> # Put here you account login on przelewy24
+  COUNTRY   = 'PL'
+  LANGUAGE  = 'pl'
+
+  validates_presence_of :email, :klient, :adres, :kod, :miasto
+  validates_format_of :kod, :with => /[0-9]{2}-[0-9]{3}/ # polish post code check
+
+  # price to display - in db is in cents
+  def kwota_pln
+    kwota.to_f/100
+  end
+
+  # generate 64-char long key to przelewy24.pl
+  def self.generate_session_id
+    <%= class_name %>Tools::generate(64, 26, 97)
+  end
+
+  # attributes that are needed in second verification
+  def attributes_for_verify
+    {
+      'p24_session_id' => session_id,
+      'p24_order_id' => order_id,
+      'p24_id_sprzedawcy' => SELLER_ID,
+      'p24_kwota' => kwota
+    }
+  end
+
+  # attibutes that are needed for first contact with przelewy24.pl
+  def attributes_for_p24
+    {
+      'p24_session_id' => session_id,
+      'p24_id_sprzedawcy' => SELLER_ID,
+      'p24_opis' => <%= class_name %>Tools::replace_polish_chars(opis),
+      'p24_kwota' => kwota,
+      'p24_klient' => <%= class_name %>Tools::replace_polish_chars(klient),
+      'p24_adres' => <%= class_name %>Tools::replace_polish_chars(adres),
+      'p24_kod' => kod,
+      'p24_miasto' => <%= class_name %>Tools::replace_polish_chars(miasto),
+      'p24_kraj' => COUNTRY,
+      'p24_email' => email,
+      'p24_language' => LANGUAGE
+    }
+  end
+
+  # after the payment correct verification
+  def set_account
+    transaction do
+      unless is_verified
+        update_attribute(:is_verified, true)
+
+        # Here you should put what happen after correct verification process
+      end
+    end
+  end
+
+  private
+
+  # setting session id for connection with przelewy24
+  def set_session_id
+    self.session_id = <%= class_name %>.generate_session_id
+    self.id_sprzedawcy = SELLER_ID
+    self.kraj = COUNTRY
+    self.language = LANGUAGE
+  end
+
+  class <%= class_name %>Tools
+
+    # Generate a string with given length from given ascii range
+    def self.generate(length, from, to)
+      string = ""
+      length.times { |i| string << (rand(from)+to).chr }
+      string
+    end
+
+    # Replace polish chars, so there will be no funny signs on Przelewy24 in transactions
+    def self.replace_polish_chars(string)    
+      ascii = "acelnoszzACELNOSZZ"
+      cep = "\271\346\352\263\361\363\234\277\237\245\306\312\243\321\323\214\257\217"  
+      string = Iconv.new("cp1250", "UTF-8").iconv(string)  
+      string.tr(cep,ascii)  
+    end
+
+  end
+
+end