module ActiveData
  module Model
    module Associations
      module PersistenceAdapters
        class ActiveRecord < Base
          class ReferencedProxy < ActiveData::Model::Associations::Collection::Proxy
            # You can't create data directly through ActiveRecord::Relation
            METHODS_EXCLUDED_FROM_DELEGATION = %w[build create create!].map(&:to_sym).freeze

            attr_reader :association
            delegate :scope, to: :@association

            def method_missing(method, *args, &block)
              delegate_to_scope?(method) ? scope.send(method, *args, &block) : super
            end

            def respond_to_missing?(method, include_private = false)
              delegate_to_scope?(method) || super
            end

          private

            def delegate_to_scope?(method)
              METHODS_EXCLUDED_FROM_DELEGATION.exclude?(method) && scope.respond_to?(method)
            end
          end
        end
      end
    end
  end
end