class Oidc::ConnectObject

def self.all_attributes
  required_attributes + optional_attributes
end

def all_attributes
  self.class.all_attributes
end

def as_json(options = {})
  options ||= {} # options can be nil when to_json is called without options
  validate! unless options[:skip_validation]
  all_attributes.inject({}) do |hash, _attr_|
    value = self.send(_attr_)
    hash.merge! _attr_ => case value
    when ConnectObject
      value.as_json options
    else
      value
    end
  end.delete_if do |key, value|
    value.nil?
  end
end

def initialize(attributes = {})
  all_attributes.each do |_attr_|
    self.send :"#{_attr_}=", attributes[_attr_]
  end
  self.raw_attributes = attributes
  attr_missing!
end

def require_at_least_one_attributes
  all_blank = all_attributes.all? do |key|
    self.send(key).blank?
  end
  errors.add :base, 'At least one attribute is required' if all_blank
end

def validate!
  valid? or raise ValidationFailed.new(self)
end