AlexWayfer/formalism-model_forms

# frozen_string_literal: true

module Formalism
    module ModelForms
        ## Base form for model moving
        module Move
            include Formalism::ModelForms::Base

            primary_field :id, Integer

            attr_reader :direction

            def initialize(direction, primary_field_value, how_many = 1)
                @direction = direction.to_sym
                @how_many = how_many.to_i

                super(primary_field_name => primary_field_value)
            end

            private

            POSSIBLE_DIRECTIONS = %i[up down].freeze

            def validate
                return if POSSIBLE_DIRECTIONS.include?(@direction)

                errors.add :direction, :unknown, args: { direction: @direction }
            end

            def execute
                instance.public_send(:"move_#{@direction}", @how_many)
                super
            end
        end
    end
end