podemos-info / iban_bic

require "regexp-examples"

module IbanBic

  module_function

  def random_iban(options = {})

    country = options[:country]

    searched_tags = options[:tags]

    non_searched_tags = options[:not_tags]

    unless country

      possible_countries = random_generator.keys

      possible_countries -= IbanBic.tags.select { |_country, country_tags| (searched_tags - country_tags).any? } .keys if searched_tags.present?

      possible_countries -= IbanBic.tags.select { |_country, country_tags| (non_searched_tags & country_tags).any? } .keys if non_searched_tags.present?

      country = possible_countries.sample

    end

    IbanBic.fix(random_generator[country].random_example)

  end

  def random_generator

    @random_generator ||= Hash[

      iban_meta.map do |country, meta|

        [country, /^#{country}#{meta["parts"].delete(" ").gsub(/\(\?\<\w+\>([^\)]*)\)/, "\\1")}$/]

      end

    ].freeze

  end

  alias _clear_cache clear_cache