class FileStorage::Request

	JSONIPC.request Download, 30 do
		property mid        : String   # autogenerated
		property filedigest : String?  # SHA256 digest of the file, used as ID
		property name       : String?
		property tags       : Array(String)?
		def initialize(@filedigest = nil, @name = nil, @tags = nil)
			@mid = UUID.random.to_s
		end

		def handle(filestoraged : FileStorage::Service, event : IPC::Event::Events)
			user = filestoraged.get_logged_user event

			raise Exception.new "unauthorized" if user.nil?

			# FIXME: Maybe this should be moved to FileStorage::Service
			fd = event.connection.fd

			user_data = filestoraged.get_user_data user.uid

			filestoraged.storage.download self, user_data
		rescue e
			return Response::Error.new @mid, "unauthorized"
		end
	end
	FileStorage.requests << Download
end

class FileStorage::Client
	def download(filedigest = nil, name = nil, tags = nil)
		request = FileStorage::Request::Download.new filedigest, name, tags
		send request

		response = parse_message [ FileStorage::Response::Download, FileStorage::Response::Error ], read

		case response
		when FileStorage::Response::Download
		when FileStorage::Response::Error
			raise "Download request denied: #{response.reason}"
		end

		response
	end
end


class FileStorage::Response
	JSONIPC.request Download, 30 do
		property mid : String
		def initialize(@mid)
		end
	end
end