module ActiveRecord::Timestamp

def _create_record
  if record_timestamps
    current_time = current_time_from_proper_timezone
    all_timestamp_attributes_in_model.each do |column|
      _write_attribute(column, current_time) unless _read_attribute(column)
    end
  end
  super
end

def _update_record
  if @_touch_record && should_record_timestamps?
    current_time = current_time_from_proper_timezone
    timestamp_attributes_for_update_in_model.each do |column|
      next if will_save_change_to_attribute?(column)
      _write_attribute(column, current_time)
    end
  end
  super
end

def all_timestamp_attributes_in_model
  self.class.all_timestamp_attributes_in_model
end

def clear_timestamp_attributes
  all_timestamp_attributes_in_model.each do |attribute_name|
    self[attribute_name] = nil
    clear_attribute_change(attribute_name)
  end
end

def create_or_update(touch: true, **)
  @_touch_record = touch
  super
end

def current_time_from_proper_timezone
  self.class.current_time_from_proper_timezone
end

def initialize_dup(other) # :nodoc:
  super
  clear_timestamp_attributes
end

def max_updated_column_timestamp
  timestamp_attributes_for_update_in_model
    .filter_map { |attr| self[attr]&.to_time }
    .max
end

def should_record_timestamps?
  record_timestamps && (!partial_updates? || has_changes_to_save?)
end

def timestamp_attributes_for_create_in_model
  self.class.timestamp_attributes_for_create_in_model
end

def timestamp_attributes_for_update_in_model
  self.class.timestamp_attributes_for_update_in_model
end