module CouchRest
  module Attachments
  
    # saves an attachment directly to couchdb
    def put_attachment(name, file, options={})
      raise ArgumentError, "doc must be saved" unless self.rev
      raise ArgumentError, "doc.database required to put_attachment" unless database
      result = database.put_attachment(self, name, file, options)
      self['_rev'] = result['rev']
      result['ok']
    end

    # returns an attachment's data
    def fetch_attachment(name)
      raise ArgumentError, "doc must be saved" unless self.rev
      raise ArgumentError, "doc.database required to put_attachment" unless database
      database.fetch_attachment(self, name)
    end

    # deletes an attachment directly from couchdb
    def delete_attachment(name, force=false)
      raise ArgumentError, "doc.database required to delete_attachment" unless database
      result = database.delete_attachment(self, name, force)
      self['_rev'] = result['rev']
      result['ok']
    end
  
  end
end