module DeviseInvitable
  module Generators
    class InstallGenerator < Rails::Generators::Base
      source_root File.expand_path("../../templates", __FILE__)
      desc "Add DeviseInvitable config variables to the Devise initializer and copy DeviseInvitable locale files to your application."

      # def devise_install
      #   invoke "devise:install"
      # end

      def add_config_options_to_initializer
        devise_initializer_path = "config/initializers/devise.rb"
        if File.exist?(devise_initializer_path)
          old_content = File.read(devise_initializer_path)

          if old_content.match(Regexp.new(/^\s# ==> Configuration for :invitable\n/))
            false
          else
            inject_into_file(devise_initializer_path, :before => "  # ==> Configuration for :confirmable\n") do
<<-CONTENT
  # ==> Configuration for :invitable
  # The period the generated invitation token is valid, after
  # this period, the invited resource won't be able to accept the invitation.
  # When invite_for is 0 (the default), the invitation won't expire.
  # config.invite_for = 2.weeks

  # Number of invitations users can send.
  # - If invitation_limit is nil, there is no limit for invitations, users can
  # send unlimited invitations, invitation_limit column is not used.
  # - If invitation_limit is 0, users can't send invitations by default.
  # - If invitation_limit n > 0, users can send n invitations.
  # You can change invitation_limit column for some users so they can send more
  # or less invitations, even with global invitation_limit = 0
  # Default: nil
  # config.invitation_limit = 5

  # The key to be used to check existing users when sending an invitation
  # and the regexp used to test it when validate_on_invite is not set.
  # config.invite_key = {:email => /\\A[^@]+@[^@]+\\z/}
  # config.invite_key = {:email => /\\A[^@]+@[^@]+\\z/, :username => nil}

  # Flag that force a record to be valid before being actually invited
  # Default: false
  # config.validate_on_invite = true

CONTENT
            end
          end
        end
      end

      def copy_locale
        copy_file "../../../config/locales/en.yml", "config/locales/devise_invitable.en.yml"
      end

    end
  end
end