module ActiveRecord::Timestamp::ClassMethods

def all_timestamp_attributes_in_model
  @all_timestamp_attributes_in_model ||=
    (timestamp_attributes_for_create_in_model + timestamp_attributes_for_update_in_model).freeze
end

def current_time_from_proper_timezone
  ActiveRecord.default_timezone == :utc ? Time.now.utc : Time.now
end

def reload_schema_from_cache
  @timestamp_attributes_for_create_in_model = nil
  @timestamp_attributes_for_update_in_model = nil
  @all_timestamp_attributes_in_model = nil
  super
end

def timestamp_attributes_for_create
  ["created_at", "created_on"].map! { |name| attribute_aliases[name] || name }
end

def timestamp_attributes_for_create_in_model
  @timestamp_attributes_for_create_in_model ||=
    (timestamp_attributes_for_create & column_names).freeze
end

def timestamp_attributes_for_update
  ["updated_at", "updated_on"].map! { |name| attribute_aliases[name] || name }
end

def timestamp_attributes_for_update_in_model
  @timestamp_attributes_for_update_in_model ||=
    (timestamp_attributes_for_update & column_names).freeze
end

def touch_attributes_with_time(*names, time: nil)
  attribute_names = timestamp_attributes_for_update_in_model
  attribute_names |= names.map(&:to_s)
  attribute_names.index_with(time || current_time_from_proper_timezone)
end