#!/usr/bin/env python3
# SPDX-License-Identifier: LGPL-2.1-or-later

from __future__ import absolute_import, print_function, unicode_literals

from optparse import OptionParser
import os.path
import sys
import dbus
import dbus.service
import dbus.mainloop.glib
try:
  from gi.repository import GObject
except ImportError:
  import gobject as GObject

BUS_NAME='org.bluez.obex'
PATH = '/org/bluez/obex'
CLIENT_INTERFACE='org.bluez.obex.Client1'
SESSION_INTERFACE='org.bluez.obex.Session1'
FILE_TRASNFER_INTERFACE='org.bluez.obex.FileTransfer1'
TRANSFER_INTERFACE='org.bluez.obex.Transfer1'

def parse_options():
	parser.add_option("-d", "--device", dest="device",
			help="Device to connect", metavar="DEVICE")
	parser.add_option("-c", "--chdir", dest="new_dir",
			help="Change current directory to DIR", metavar="DIR")
	parser.add_option("-l", "--list", action="store_true", dest="list_dir",
			help="List the current directory")
	parser.add_option("-g", "--get", dest="get_file",
			help="Get FILE", metavar="FILE")
	parser.add_option("-p", "--put", dest="put_file",
			help="Put FILE", metavar="FILE")
	parser.add_option("-y", "--copy", dest="copy_file",
			help="Copy FILE", metavar="FILE")
	parser.add_option("-m", "--move", dest="move_file",
			help="Move FILE", metavar="FILE")
	parser.add_option("-n", "--destname", dest="dest_file",
			help="Destination FILE", metavar="FILE")
	parser.add_option("-r", "--remove", dest="remove_file",
			help="Remove FILE", metavar="FILE")
	parser.add_option("-v", "--verbose", action="store_true",
			dest="verbose")

	return parser.parse_args()

class FtpClient:
	def __init__(self, session_path, verbose=False):
		self.transferred = 0
		self.transfer_path = None
		self.transfer_size = 0
		self.verbose = verbose
		bus = dbus.SessionBus()
		obj = bus.get_object(BUS_NAME, session_path)
		self.session = dbus.Interface(obj, SESSION_INTERFACE)
		self.ftp = dbus.Interface(obj, FILE_TRASNFER_INTERFACE)
		bus.add_signal_receiver(self.properties_changed,
			dbus_interface="org.freedesktop.DBus.Properties",
			signal_name="PropertiesChanged",
			path_keyword="path")

	def create_transfer_reply(self, path, properties):
		self.transfer_path = path
		self.transfer_size = properties["Size"]
		if self.verbose:
			print("Transfer created: %s" % path)

	def generic_reply(self):
		if self.verbose:
			print("Operation succeeded")

	def error(self, err):
		print(err)
		mainloop.quit()

	def properties_changed(self, interface, properties, invalidated, path):
		if path != self.transfer_path:
			return

		if "Status" in properties and \
				(properties['Status'] == 'complete' or \
				properties['Status'] == 'error'):
			if self.verbose:
				print("Transfer %s" % properties['Status'])
			mainloop.quit()
			return

		if "Transferred" not in properties:
			return

		value = properties["Transferred"]
		speed = (value - self.transferred) / 1000
		print("Transfer progress %d/%d at %d kBps" % (value,
							self.transfer_size,
							speed))
		self.transferred = value

	def change_folder(self, new_dir):
		for node in new_dir.split("/"):
			self.ftp.ChangeFolder(node)

	def list_folder(self):
		for i in self.ftp.ListFolder():
			if i["Type"] == "folder":
				print("%s/" % (i["Name"]))
			else:
				print("%s" % (i["Name"]))

	def put_file(self, filename):
		self.ftp.PutFile(os.path.abspath(filename),
				os.path.basename(filename),
				reply_handler=self.create_transfer_reply,
				error_handler=self.error)

	def get_file(self, filename):
		self.ftp.GetFile(os.path.abspath(filename),
				os.path.basename(filename),
				reply_handler=self.create_transfer_reply,
				error_handler=self.error)

	def remove_file(self, filename):
		self.ftp.Delete(filename,
				reply_handler=self.generic_reply,
				error_handler=self.error)

	def move_file(self, filename, destname):
		self.ftp.MoveFile(filename, destname,
				reply_handler=self.generic_reply,
				error_handler=self.error)

	def copy_file(self, filename, destname):
		self.ftp.CopyFile(filename, destname,
				reply_handler=self.generic_reply,
				error_handler=self.error)

if  __name__ == '__main__':

	dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)

	parser = OptionParser()

	(options, args) = parse_options()

	if not options.device:
		parser.print_help()
		sys.exit(0)

	bus = dbus.SessionBus()
	mainloop = GObject.MainLoop()

	client = dbus.Interface(bus.get_object(BUS_NAME, PATH,),
							CLIENT_INTERFACE)

	print("Creating Session")
	path = client.CreateSession(options.device, { "Target": "ftp" })

	ftp_client = FtpClient(path, options.verbose)

	if options.new_dir:
		ftp_client.change_folder(options.new_dir)

	if options.list_dir:
		ftp_client.list_folder()

	if options.get_file:
		ftp_client.get_file(options.get_file)

	if options.put_file:
		ftp_client.put_file(options.put_file)

	if options.move_file:
		ftp_client.move_file(options.move_file, options.dest_file)

	if options.copy_file:
		ftp_client.copy_file(options.copy_file, options.dest_file)

	if options.remove_file:
		ftp_client.remove_file(options.remove_file)

	mainloop.run()
