import os
import subprocess
import sys
import time

import unicodedata

from threading import Thread

from termcolor import colored

from test.clients.client import DockerClient, Command, FileCopy

def remove_control_characters(s):
  return "".join(ch for ch in unicode(s) if unicodedata.category(ch)[0]!="C")


# These tuples are the box&version and the client to use.
BOXES = [
  ("kleesc/coreos --box-version=1911.4.0", DockerClient()), # docker 18.06.1
  ("kleesc/coreos --box-version=1800.7.0", DockerClient()), # docker 18.03.1
  ("kleesc/coreos --box-version=1688.5.3", DockerClient()), # docker 17.12.1
  ("kleesc/coreos --box-version=1632.3.0", DockerClient()), # docker 17.09.1
  ("kleesc/coreos --box-version=1576.5.0", DockerClient()), # docker 17.09.0
  ("kleesc/coreos --box-version=1520.9.0", DockerClient()), # docker 1.12.6
  ("kleesc/coreos --box-version=1235.6.0", DockerClient()), # docker 1.12.3
  ("kleesc/coreos --box-version=1185.5.0", DockerClient()), # docker 1.11.2

  ("kleesc/coreos --box-version=1122.3.0", DockerClient()), # docker 1.10.3
  ("kleesc/coreos --box-version=899.17.0", DockerClient()), # docker 1.9.1
  ("kleesc/coreos --box-version=835.13.0", DockerClient()), # docker 1.8.3
  ("kleesc/coreos --box-version=766.5.0", DockerClient()), # docker 1.7.1
  ("kleesc/coreos --box-version=717.3.0", DockerClient()), # docker 1.6.2
  ("kleesc/coreos --box-version=647.2.0", DockerClient()), # docker 1.5.0
  ("kleesc/coreos --box-version=557.2.0", DockerClient()), # docker 1.4.1
  ("kleesc/coreos --box-version=522.6.0", DockerClient()), # docker 1.3.3

  ("yungsang/coreos --box-version=1.3.7", DockerClient()), # docker 1.3.2
  ("yungsang/coreos --box-version=1.2.9", DockerClient()), # docker 1.2.0
  ("yungsang/coreos --box-version=1.1.5", DockerClient()), # docker 1.1.2
  ("yungsang/coreos --box-version=1.0.0", DockerClient()), # docker 1.0.1
  ("yungsang/coreos --box-version=0.9.10", DockerClient()), # docker 1.0.0
  ("yungsang/coreos --box-version=0.9.6", DockerClient()), # docker 0.11.1

  ("yungsang/coreos --box-version=0.9.1", DockerClient(True)), # docker 0.10.0
  ("yungsang/coreos --box-version=0.3.1", DockerClient(True)),
]

def _check_vagrant():
  vagrant_command = 'vagrant'
  vagrant = any(os.access(os.path.join(path, vagrant_command), os.X_OK)
                for path in os.environ.get('PATH').split(':'))
  vagrant_plugins = subprocess.check_output([vagrant_command, 'plugin', 'list'])
  return (vagrant, 'vagrant-scp' in vagrant_plugins)


class CommandFailedException(Exception):
  pass


class SpinOutputter(Thread):
  def __init__(self, initial_message):
    super(SpinOutputter, self).__init__()
    self.previous_line = ''
    self.next_line = initial_message
    self.running = True
    self.daemon = True

  @staticmethod
  def spinning_cursor():
    while 1:
      for cursor in '|/-\\':
        yield cursor

  def set_next(self, text):
    first_line = text.split('\n')[0].strip()
    first_line = remove_control_characters(first_line)
    self.next_line = first_line[:80]

  def _clear_line(self):
    sys.stdout.write('\r')
    sys.stdout.write(' ' * (len(self.previous_line) + 2))
    sys.stdout.flush()

    sys.stdout.write('\r')
    sys.stdout.flush()
    self.previous_line = ''

  def stop(self):
    self._clear_line()
    self.running = False

  def run(self):
    spinner = SpinOutputter.spinning_cursor()
    while self.running:
      self._clear_line()
      sys.stdout.write('\r')
      sys.stdout.flush()

      sys.stdout.write(next(spinner))
      sys.stdout.write(" ")
      sys.stdout.write(colored(self.next_line, attrs=['dark']))
      sys.stdout.flush()

      self.previous_line = self.next_line
      time.sleep(0.25)


def _run_and_wait(command, error_allowed=False):
  # Run the command itself.
  outputter = SpinOutputter('Running command %s' % command)
  outputter.start()

  output = ''
  process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
  for line in iter(process.stdout.readline, ''):
    output += line
    outputter.set_next(line)

  result = process.wait()
  outputter.stop()

  if result != 0 and not error_allowed:
    print colored('>>> Command `%s` Failed:' % command, 'red')
    print output
    raise CommandFailedException()

  return output


def _indent(text, amount):
  return ''.join((' ' * amount) + line for line in text.splitlines(True))


def _run_commands(commands):
  last_result = None
  for command in commands:
    if isinstance(command, Command):
      last_result = _run_and_wait(['vagrant', 'ssh', '-c', command.command])
    else:
      last_result = _run_and_wait(['vagrant', 'scp', command.source, command.destination])

  return last_result

def _run_box(box, client, registry):
  vagrant, vagrant_scp = _check_vagrant()
  if not vagrant:
    print("vagrant command not found")
    return

  if not vagrant_scp:
    print("vagrant-scp plugin not installed")
    return

  namespace = 'devtable'
  repo_name = 'testrepo%s' % int(time.time())
  username = 'devtable'
  password = 'password'

  print colored('>>> Box: %s' % box, attrs=['bold'])
  print colored('>>> Starting box', 'yellow')
  _run_and_wait(['vagrant', 'destroy', '-f'], error_allowed=True)
  _run_and_wait(['rm', 'Vagrantfile'], error_allowed=True)
  _run_and_wait(['vagrant', 'init'] + box.split(' '))
  _run_and_wait(['vagrant', 'up', '--provider', 'virtualbox'])

  print colored('>>> Setting up runtime', 'yellow')
  _run_commands(client.setup_client(registry))

  print colored('>>> Client version', 'cyan')
  docker_version = _run_commands(client.print_version())
  print _indent(docker_version, 4)

  print colored('>>> Populating test image', 'yellow')
  _run_commands(client.populate_test_image(registry, namespace, repo_name))

  print colored('>>> Testing login', 'cyan')
  _run_commands(client.login(registry, username, password))

  print colored('>>> Testing push', 'cyan')
  _run_commands(client.push(registry, namespace, repo_name))

  print colored('>>> Removing all images', 'yellow')
  _run_commands(client.pre_pull_cleanup(registry, namespace, repo_name))

  print colored('>>> Testing pull', 'cyan')
  _run_commands(client.pull(registry, namespace, repo_name))

  print colored('>>> Verifying', 'cyan')
  _run_commands(client.verify(registry, namespace, repo_name))

  print colored('>>> Tearing down box', 'magenta')
  _run_and_wait(['vagrant', 'destroy', '-f'], error_allowed=True)

  print colored('>>> Successfully tested box %s' % box, 'green')
  print ""

def test_clients(registry='10.0.2.2:5000'):
  print colored('>>> Running against registry ', attrs=['bold']) + colored(registry, 'cyan')
  for box, client in BOXES:
    try:
      _run_box(box, client, registry)
    except CommandFailedException:
      sys.exit(-1)


if __name__ == "__main__":
  test_clients(sys.argv[1] if len(sys.argv) > 1 else '10.0.2.2:5000')