module ActionText::Attachable

def as_json(*)
  super.merge("attachable_sgid" => persisted? ? attachable_sgid : nil)
end

def attachable_content_type
  try(:content_type) || "application/octet-stream"
end

def attachable_filename
  filename.to_s if respond_to?(:filename)
end

def attachable_filesize
  try(:byte_size) || try(:filesize)
end

def attachable_from_sgid(sgid)
  from_attachable_sgid(sgid)
rescue ActiveRecord::RecordNotFound
  nil
end

def attachable_metadata
  try(:metadata) || {}
end

def attachable_sgid
  to_sgid(expires_in: nil, for: LOCATOR_NAME).to_s
end

def from_attachable_sgid(sgid, options = {})
  method = sgid.is_a?(Array) ? :locate_many_signed : :locate_signed
  record = GlobalID::Locator.public_send(method, sgid, options.merge(for: LOCATOR_NAME))
  record || raise(ActiveRecord::RecordNotFound)
end

def from_attachable_sgid(sgid)
  ActionText::Attachable.from_attachable_sgid(sgid, only: self)
end

def from_node(node)
  if attachable = attachable_from_sgid(node["sgid"])
    attachable
  elsif attachable = ActionText::Attachables::ContentAttachment.from_node(node)
    attachable
  elsif attachable = ActionText::Attachables::RemoteImage.from_node(node)
    attachable
  else
    ActionText::Attachables::MissingAttachable
  end
end

def previewable_attachable?
  false
end

def to_attachable_partial_path
  to_partial_path
end

def to_rich_text_attributes(attributes = {})
  attributes.dup.tap do |attrs|
    attrs[:sgid] = attachable_sgid
    attrs[:content_type] = attachable_content_type
    attrs[:previewable] = true if previewable_attachable?
    attrs[:filename] = attachable_filename
    attrs[:filesize] = attachable_filesize
    attrs[:width] = attachable_metadata[:width]
    attrs[:height] = attachable_metadata[:height]
  end.compact
end

def to_trix_content_attachment_partial_path
  to_partial_path
end