hardpixel/smart-settings

require 'rails/generators'

module SmartSettings
  class SettingGenerator < Rails::Generators::Base

    desc 'Generates a new setting class in settings folder.'
    source_root File.expand_path('../templates', __FILE__)

    argument :name, type: :string, required: true

    def create_migration_file
      template 'setting.rb', "app/settings/#{setting_file}.rb"
    end

    private

    def setting_class
      name.camelize
    end

    def setting_file
      "#{name.downcase.underscore}_settings"
    end

    def setting_fields
      args.map do |arg|
        field, cast_type, default, group = arg.split(':')

        items  = [":#{field.to_sym}", ":#{cast_type.to_sym}"]
        items << ["default: #{value_type_cast(cast_type.to_sym, default)}"] if default.present?
        items << ["group: :#{group.to_sym}"] if group.present?

        items.join(', ')
      end
    end

    def value_type_cast(cast_type, value)
      strings = [:string, :date, :datetime, :time]
      cast_type.in?(strings) ? "'#{value}'" : value
    end
  end
end