class Grape::Validations::AttributesDoc

def details
  @details ||= {}
end

def document(attrs)
  return if @api.namespace_inheritable(:do_not_document)
  details[:type] = type.to_s if type
  details[:values] = values if values
  documented_attrs = attrs.each_with_object({}) do |name, memo|
    memo[@scope.full_name(name)] = details
  end
  @api.namespace_stackable(:params, documented_attrs)
end

def extract_details(validations)
  details[:required] = validations.key?(:presence)
  desc = validations.delete(:desc) || validations.delete(:description)
  details[:desc] = desc if desc
  documentation = validations.delete(:documentation)
  details[:documentation] = documentation if documentation
  details[:default] = validations[:default] if validations.key?(:default)
  details[:min_length] = validations[:length][:min] if validations.key?(:length) && validations[:length].key?(:min)
  details[:max_length] = validations[:length][:max] if validations.key?(:length) && validations[:length].key?(:max)
end

def initialize(api, scope)
  @api = api
  @scope = scope
  @type = type
end

def required
  details[:required]
end