require 'rubygems'
require 'active_support'
require 'active_merchant'


class GatewaySupport #:nodoc:
  ACTIONS = [:purchase, :authorize, :capture, :void, :credit, :recurring]

  include ActiveMerchant::Billing

  attr_reader :gateways

  def initialize
    Dir[File.expand_path(File.dirname(__FILE__) + '/../active_merchant/billing/gateways/*.rb')].each do |f|
      filename = File.basename(f, '.rb')
      gateway_name = filename + '_gateway'
      begin
        gateway_class = ('ActiveMerchant::Billing::' + gateway_name.camelize).constantize
      rescue NameError
        puts "Could not load gateway " + gateway_name.camelize + " from " + f + "."
      end
    end
    @gateways = Gateway.implementations.sort_by(&:name)
    @gateways.delete(ActiveMerchant::Billing::BogusGateway)
  end

  def each_gateway
    @gateways.each{|g| yield g }
  end

  def features
    width = 15

    print "Name".center(width + 20)
    ACTIONS.each{|f| print "#{f.to_s.capitalize.center(width)}" }
    puts

    each_gateway do |g|
      print "#{g.display_name.ljust(width + 20)}"
      ACTIONS.each do |f|
        print "#{(g.instance_methods.include?(f.to_s) ? "Y" : "N").center(width)}"
      end
      puts
    end
  end

  def to_rdoc
    each_gateway do |g|
      puts "* {#{g.display_name}}[#{g.homepage_url}] - #{g.supported_countries.join(', ')}"
    end
  end

  def to_textile
    each_gateway do |g|
      puts %/ * "#{g.display_name}":#{g.homepage_url} [#{g.supported_countries.join(', ')}]/
    end
  end

  def to_markdown
    each_gateway do |g|
      puts %/* [#{g.display_name}](#{g.homepage_url}) - #{g.supported_countries.join(', ')}/
    end
  end

  def to_s
    each_gateway do |g|
      puts "#{g.display_name} - #{g.homepage_url} [#{g.supported_countries.join(', ')}]"
    end
  end
end