from datetime import datetime

import pytest

from mock import patch

from data.database import EmailConfirmation, User, DeletedNamespace
from data.model.organization import get_organization
from data.model.notification import create_notification
from data.model.team import create_team, add_user_to_team
from data.model.user import create_user_noverify, validate_reset_code, get_active_users
from data.model.user import mark_namespace_for_deletion, delete_namespace_via_marker
from data.model.user import create_robot, lookup_robot, list_namespace_robots
from data.model.user import get_pull_credentials, retrieve_robot_token, verify_robot
from data.model.user import InvalidRobotException, delete_robot, get_matching_users
from data.model.repository import create_repository
from data.fields import Credential
from data.queue import WorkQueue
from util.timedeltastring import convert_to_timedelta
from util.timedeltastring import convert_to_timedelta
from util.security.token import encode_public_private_token
from test.fixtures import *

def test_create_user_with_expiration(initialized_db):
  with patch('data.model.config.app_config', {'DEFAULT_TAG_EXPIRATION': '1h'}):
    user = create_user_noverify('foobar', 'foo@example.com', email_required=False)
    assert user.removed_tag_expiration_s == 60 * 60

@pytest.mark.parametrize('token_lifetime, time_since', [
  ('1m', '2m'),
  ('2m', '1m'),
  ('1h', '1m'),
])
def test_validation_code(token_lifetime, time_since, initialized_db):
  user = create_user_noverify('foobar', 'foo@example.com', email_required=False)
  created = datetime.now() - convert_to_timedelta(time_since)
  verification_code, unhashed = Credential.generate()
  confirmation = EmailConfirmation.create(user=user, pw_reset=True,
                                          created=created, verification_code=verification_code)
  encoded = encode_public_private_token(confirmation.code, unhashed)

  with patch('data.model.config.app_config', {'USER_RECOVERY_TOKEN_LIFETIME': token_lifetime}):
    result = validate_reset_code(encoded)
    expect_success = convert_to_timedelta(token_lifetime) >= convert_to_timedelta(time_since)
    assert expect_success == (result is not None)


@pytest.mark.parametrize('disabled', [
  (True),
  (False),
])
@pytest.mark.parametrize('deleted', [
  (True),
  (False),
])
def test_get_active_users(disabled, deleted, initialized_db):
  # Delete a user.
  deleted_user = model.user.get_user('public')
  queue = WorkQueue('testgcnamespace', lambda db: db.transaction())
  mark_namespace_for_deletion(deleted_user, [], queue)

  users = get_active_users(disabled=disabled, deleted=deleted)
  deleted_found = [user for user in users if user.id == deleted_user.id]
  assert bool(deleted_found) == (deleted and disabled)

  for user in users:
    if not disabled:
      assert user.enabled


def test_mark_namespace_for_deletion(initialized_db):
  def create_transaction(db):
    return db.transaction()

  # Create a user and then mark it for deletion.
  user = create_user_noverify('foobar', 'foo@example.com', email_required=False)

  # Add some robots.
  create_robot('foo', user)
  create_robot('bar', user)

  assert lookup_robot('foobar+foo') is not None
  assert lookup_robot('foobar+bar') is not None
  assert len(list(list_namespace_robots('foobar'))) == 2

  # Mark the user for deletion.
  queue = WorkQueue('testgcnamespace', create_transaction)
  mark_namespace_for_deletion(user, [], queue)

  # Ensure the older user is still in the DB.
  older_user = User.get(id=user.id)
  assert older_user.username != 'foobar'

  # Ensure the robots are deleted.
  with pytest.raises(InvalidRobotException):
    assert lookup_robot('foobar+foo')

  with pytest.raises(InvalidRobotException):
    assert lookup_robot('foobar+bar')

  assert len(list(list_namespace_robots(older_user.username))) == 0

  # Ensure we can create a user with the same namespace again.
  new_user = create_user_noverify('foobar', 'foo@example.com', email_required=False)
  assert new_user.id != user.id

  # Ensure the older user is still in the DB.
  assert User.get(id=user.id).username != 'foobar'


def test_delete_namespace_via_marker(initialized_db):
  def create_transaction(db):
    return db.transaction()

  # Create a user and then mark it for deletion.
  user = create_user_noverify('foobar', 'foo@example.com', email_required=False)

  # Add some repositories.
  create_repository('foobar', 'somerepo', user)
  create_repository('foobar', 'anotherrepo', user)

  # Mark the user for deletion.
  queue = WorkQueue('testgcnamespace', create_transaction)
  marker_id = mark_namespace_for_deletion(user, [], queue)

  # Delete the user.
  delete_namespace_via_marker(marker_id, [])

  # Ensure the user was actually deleted.
  with pytest.raises(User.DoesNotExist):
    User.get(id=user.id)

  with pytest.raises(DeletedNamespace.DoesNotExist):
    DeletedNamespace.get(id=marker_id)


def test_delete_robot(initialized_db):
  # Create a robot account.
  user = create_user_noverify('foobar', 'foo@example.com', email_required=False)
  robot, _ = create_robot('foo', user)

  # Add some notifications and other rows pointing to the robot.
  create_notification('repo_push', robot)

  team = create_team('someteam', get_organization('buynlarge'), 'member')
  add_user_to_team(robot, team)

  # Ensure the robot exists.
  assert lookup_robot(robot.username).id == robot.id

  # Delete the robot.
  delete_robot(robot.username)

  # Ensure it is gone.
  with pytest.raises(InvalidRobotException):
    lookup_robot(robot.username)


def test_get_matching_users(initialized_db):
  # Exact match.
  for user in User.select().where(User.organization == False, User.robot == False):
    assert list(get_matching_users(user.username))[0].username == user.username

  # Prefix matching.
  for user in User.select().where(User.organization == False, User.robot == False):
    assert user.username in [r.username for r in get_matching_users(user.username[:2])]


def test_get_matching_users_with_same_prefix(initialized_db):
  # Create a bunch of users with the same prefix.
  for index in range(0, 20):
    create_user_noverify('foo%s' % index, 'foo%s@example.com' % index, email_required=False)

  # For each user, ensure that lookup of the exact name is found first.
  for index in range(0, 20):
    username = 'foo%s' % index
    assert list(get_matching_users(username))[0].username == username

  # Prefix matching.
  found = list(get_matching_users('foo', limit=50))
  assert len(found) == 20


def test_robot(initialized_db):
  # Create a robot account.
  user = create_user_noverify('foobar', 'foo@example.com', email_required=False)
  robot, token = create_robot('foo', user)
  assert retrieve_robot_token(robot) == token

  # Ensure we can retrieve its information.
  found = lookup_robot('foobar+foo')
  assert found == robot

  creds = get_pull_credentials('foobar+foo')
  assert creds is not None
  assert creds['username'] == 'foobar+foo'
  assert creds['password'] == token

  assert verify_robot('foobar+foo', token) == robot

  with pytest.raises(InvalidRobotException):
    assert verify_robot('foobar+foo', 'someothertoken')

  with pytest.raises(InvalidRobotException):
    assert verify_robot('foobar+unknownbot', token)