module Feeder
  class Configuration
    attr_accessor :scopes
    attr_accessor :observables

    def initialize
      @scopes = [
        proc { order created_at: :desc }
      ]

      @observables = {}
    end

    def add_observable(observable)
      warn "[DEPRECATION] Feeder::Configuration.add_observable is deprecated. Please use Feeder::Configuration.observe instead."

      observe observable
    end

    # Add an observable.
    #
    # observable - A model to observe.
    # options    - A Hash of options:
    #              :if - A lambda returning a boolean whether to create a feed item.
    def observe(observable, options = {})
      @observables[observable] = options
    end
  end
end