#!@PYTHON@
#    This file is part of GNUnet.
#    (C) 2010, 2017 Christian Grothoff (and other contributing authors)
#
#    GNUnet is free software: you can redistribute it and/or modify it
#    under the terms of the GNU Affero General Public License as published
#    by the Free Software Foundation, either version 3 of the License,
#    or (at your option) any later version.
#
#    GNUnet is distributed in the hope that it will be useful, but
#    WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#    Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#    SPDX-License-Identifier: AGPL3.0-or-later
#
#
from __future__ import print_function
import sys
import signal
import os
import subprocess
import re
import shutil
import time
from gnunet_testing import Peer
from gnunet_testing import Test
from gnunet_testing import Check
from gnunet_testing import Condition
from gnunet_testing import *


#
# This test tests if a fresh peer bootstraps from a hostlist server and then
# successfully connects to the server. When both peers are connected
# in transport, core, topology, fs, the server is shutdown
#
# Conditions for successful exit:
# Client peer has 0 connected peer in transport, core, topology, dht, fs

#definitions

testname = "test_integration_disconnect"
verbose = True
check_timeout = 180

if os.name == "nt":
  tmp = os.getenv ("TEMP")
  signals = [signal.SIGTERM, signal.SIGINT]
else:
  tmp = "/tmp"
  signals = [signal.SIGTERM, signal.SIGINT, signal.SIGHUP, signal.SIGQUIT]

def cleanup_onerror (function, path, excinfo):
  import stat
  if not os.path.exists (path):
    pass
  elif not os.access(path, os.W_OK):
    # Is the error an access error ?
    os.chmod (path, stat.S_IWUSR)
    function (path)
  else:
    raise

def cleanup ():
  shutil.rmtree (os.path.join (tmp, "c_bootstrap_server"), False, cleanup_onerror)
  shutil.rmtree (os.path.join (tmp, "c_no_nat_client"), False, cleanup_onerror)


def success_disconnect_cont (check):
	print('Peers disconnected successfully')
	global success
	success = True;


def fail_disconnect_cont (check):
	global success
	success = False;
	print('Peers failed to disconnect')
	check.evaluate(True)

def check_disconnect ():
  test.p ('Shutting down bootstrap server')
  server.stop ()
  check = Check (test)
  check.add (StatisticsCondition (client, 'transport', '# peers connected',0))
  check.add (StatisticsCondition (client, 'core', '# peers connected',0))
  check.add (StatisticsCondition (client, 'topology', '# peers connected',0))
  check.add (StatisticsCondition (client, 'dht', '# peers connected',0))
  check.add (StatisticsCondition (client, 'fs', '# peers connected',0))
  check.run_blocking (check_timeout, success_disconnect_cont, fail_disconnect_cont)


def success_connect_cont (check):
	print('Peers connected successfully')
	check_disconnect ()


def fail_connect_cont (check):
  global success
  success= False
  print('Peers failed to connected!')
  check.evaluate(True)


def check_connect ():
  check = Check (test)
  check.add (StatisticsCondition (client, 'transport', '# peers connected',2))
  check.add (StatisticsCondition (client, 'core', '# peers connected',2))
  check.add (StatisticsCondition (client, 'topology', '# peers connected',2))
  check.add (StatisticsCondition (client, 'dht', '# peers connected',2))
  check.add (StatisticsCondition (client, 'fs', '# peers connected',2))

  check.add (StatisticsCondition (server, 'transport', '# peers connected',2))
  check.add (StatisticsCondition (server, 'core', '# peers connected',2))
  check.add (StatisticsCondition (server, 'topology', '# peers connected',2))
  check.add (StatisticsCondition (server, 'dht', '# peers connected',2))
  check.add (StatisticsCondition (server, 'fs', '# peers connected',2))

  check.run_blocking (check_timeout, success_connect_cont, fail_connect_cont)

#
# Test execution
#

def SigHandler(signum = None, frame = None):
	global success
	global server
	global client

	print('Test was aborted!')
	if (None != server):
		server.stop ()
	if (None != client):
		client.stop ()
	cleanup ()
	sys.exit(success)

def run ():
	global success
	global test
	global server
	global client

	server = None
	client = None
	success = False

	for sig in signals:
		signal.signal(sig, SigHandler)

	test = Test ('test_integration_bootstrap_and_connect.py', verbose)
	cleanup ()

	server = Peer(test, './confs/c_bootstrap_server.conf');
	client = Peer(test, './confs/c_no_nat_client.conf');

	if (True != server.start()):
		print('Failed to start server')
		if (None != server):
			server.stop ()
		cleanup ()
		sys.exit(success)

	# Give the server time to start
	time.sleep(5)

	if (True != client.start()):
		print('Failed to start client')
		if (None != server):
			server.stop ()
		if (None != client):
			client.stop ()
		cleanup ()
		sys.exit(success)

	if ((client.started == True) and (server.started == True)):
		test.p ('Peers started, running check')
		time.sleep(5)
		check_connect ()
	server.stop ()
	client.stop ()

	cleanup ()

	if (success == False):
		print ('Test failed')
		return False
	else:
		return True

try:
	run ()
except (KeyboardInterrupt, SystemExit):
	print('Test interrupted')
	server.stop ()
	client.stop ()
	cleanup ()
if (success == False):
	sys.exit(1)
else:
	sys.exit(0)