class Google::Cloud::Storage::Bucket::Updater

def check_for_changed_labels!
  return if @labels == @gapi.labels.to_h
  @gapi.labels = @labels
  patch_gapi! :labels
end

def check_for_mutable_cors!
  return if @cors_builder.nil?
  return unless @cors_builder.changed?
  @gapi.cors_configurations = @cors_builder.to_gapi
  patch_gapi! :cors_configurations
end

def check_for_mutable_lifecycle!
  return if @lifecycle_builder.nil?
  return unless @lifecycle_builder.changed?
  @gapi.lifecycle = @lifecycle_builder.to_gapi
  patch_gapi! :lifecycle
end

def cors
  # Same as Bucket#cors, but not frozen
  @cors_builder ||= Bucket::Cors.from_gapi @gapi.cors_configurations
  yield @cors_builder if block_given?
  @cors_builder
end

def initialize gapi
  super()
  @updates = []
  @gapi = gapi
  @labels = @gapi.labels.to_h.dup
  @cors_builder = nil
  @lifecycle_builder = nil
end

def labels
  @labels
end

def labels= labels
  @labels = labels
  @gapi.labels = @labels
  patch_gapi! :labels
end

def lifecycle
  # Same as Bucket#lifecycle, but not frozen
  @lifecycle_builder ||= Bucket::Lifecycle.from_gapi @gapi.lifecycle
  yield @lifecycle_builder if block_given?
  @lifecycle_builder
end

def patch_gapi! attribute
  @updates << attribute
  @updates.uniq!
end