import subprocess
import sys
import time

import unicodedata

from threading import Thread

from termcolor import colored

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 whether it requires V1 registry protocol
BOXES = [
  ("AntonioMeireles/coreos-stable --box-version=835.8.0", False),
  ("AntonioMeireles/coreos-stable --box-version=766.3.0", False),
  ("AntonioMeireles/coreos-stable --box-version=681.0.0", False),
  ("AntonioMeireles/coreos-stable --box-version=607.0.0", False),
  ("AntonioMeireles/coreos-stable --box-version=557.2.0", False),

  ("yungsang/coreos --box-version=1.3.8", False),
  ("yungsang/coreos --box-version=1.3.7", False),
  ("yungsang/coreos --box-version=1.2.9", False),
  ("yungsang/coreos --box-version=1.1.5", False),
  ("yungsang/coreos --box-version=1.0.0", False),
  ("yungsang/coreos --box-version=1.0.0", False),
  ("yungsang/coreos --box-version=0.9.10", False),
  ("yungsang/coreos --box-version=0.9.6", False),

  ("yungsang/coreos --box-version=0.9.1", True),
  ("yungsang/coreos --box-version=0.3.1", True),
]

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_box(box, requires_v1, registry):
  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 Docker', 'yellow')
  _run_and_wait(['vagrant', 'ssh', '-c', 'sudo mkdir -p /etc/systemd/system/docker.service.d/'])
  _run_and_wait(['vagrant', 'scp', '50-insecure-registry.conf', '/home/core'])
  _run_and_wait(['vagrant', 'scp', 'Dockerfile.test', '/home/core/Dockerfile'])

  cp_command = ('sudo cp /home/core/50-insecure-registry.conf ' +
                '/etc/systemd/system/docker.service.d/50-insecure-registry.conf')
  _run_and_wait(['vagrant', 'ssh', '-c', cp_command])
  _run_and_wait(['vagrant', 'ssh', '-c', 'sudo systemctl daemon-reload'])

  print colored('>>> Docker version', 'cyan')
  docker_version = _run_and_wait(['vagrant', 'ssh', '-c', 'docker version'])
  print _indent(docker_version, 4)

  print colored('>>> Building test image', 'yellow')
  if requires_v1:
    # These versions of Docker don't support the new TLS cert on quay.io, so we need to pull
    # from v1.quay.io and then retag so the build works.
    _run_and_wait(['vagrant', 'ssh', '-c', 'docker pull v1.quay.io/quay/busybox'])
    _run_and_wait(['vagrant', 'ssh', '-c',
                   'docker tag v1.quay.io/quay/busybox quay.io/quay/busybox'])

  _run_and_wait(['vagrant', 'ssh', '-c', 'docker build -t %s/devtable/testrepo .' % registry])

  print colored('>>> Testing login', 'cyan')
  _run_and_wait(['vagrant', 'ssh', '-c',
                 'docker login --username=devtable --password=password --email=foo %s' % registry])

  print colored('>>> Testing push', 'cyan')
  _run_and_wait(['vagrant', 'ssh', '-c', 'docker push %s/devtable/testrepo' % registry])

  print colored('>>> Removing all images', 'yellow')
  prefix = 'v1.' if requires_v1 else ''
  _run_and_wait(['vagrant', 'ssh', '-c', 'docker rmi -f %s/devtable/testrepo' % registry])
  _run_and_wait(['vagrant', 'ssh', '-c', 'docker rmi -f %squay.io/quay/busybox' % prefix])

  print colored('>>> Testing pull', 'cyan')
  _run_and_wait(['vagrant', 'ssh', '-c', 'docker pull %s/devtable/testrepo' % registry])

  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, requires_v1 in BOXES:
    try:
      _run_box(box, requires_v1, 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')