# frozen_string_literal: true
module BunnyMock
  module Exchanges
    class Topic < BunnyMock::Exchange

      # @private
      # @return [String] Multiple subdomain wildcard
      MULTI_WILDCARD = '#'

      # @private
      # @return [String] Single subdomain wildcard
      SINGLE_WILDCARD = '*'

      #
      # API
      #

      ##
      # Deliver a message to route with keys matching wildcards
      #
      # @param [Object] payload Message content
      # @param [Hash] opts Message properties
      # @param [String] key Routing key
      #
      # @api public
      #
      def deliver(payload, opts, key)

        # escape periods with backslash for regex
        key.gsub!('.', '\.')

        # replace single wildcards with regex for a single domain
        key.gsub!(SINGLE_WILDCARD, '(?:\w+)')

        # replace multi wildcards with regex for many domains separated by '.'
        key.gsub!(MULTI_WILDCARD, '\w+\.?')

        # turn key into regex
        key = Regexp.new(key)

        @routes.each do |route, destination|
          destination.publish(payload, opts) if route =~ key
        end
      end
    end
  end
end