getsmarter/moodle-api

module Moodle
  module Api
    # Handles all configuration settings required
    # to interaction with a Moodle API
    class Configuration
      attr_writer :token_service
      attr_accessor :host,
                    :username,
                    :password,
                    :service,
                    :token,
                    :format

      DEFAULT_FORMAT = :json

      DEFAULT_WEB_SERVICE_API_URL = '/webservice/rest/server.php'

      DEFAULT_TOKEN_API_URL = '/login/token.php'

      def initialize(options = {})
        @format = DEFAULT_FORMAT

        configure(options)
      end

      def reset
        @host = nil
        @username = nil
        @password = nil
        @service = nil
        @token = nil
        @format = DEFAULT_FORMAT
      end

      def web_service_api_url
        "#{host}#{DEFAULT_WEB_SERVICE_API_URL}"
      end

      def token_api_url
        "#{host}#{DEFAULT_TOKEN_API_URL}"
      end

      def configure(options = {}, &block)
        options.each { |key, value| instance_variable_set("@#{key}", value) }
        block.call(self) if block_given?
      end

      def token
        @token ||= token_service.call # if not set use token service
      end

      def token_service
        @token_service ||= TokenGenerator.new(self)
      end
    end
  end
end