import time
import unittest

from flask import url_for, request

# These imports are required, because otherwise we get circular imports?!
from uffd import ldap, user

from uffd.session.views import login_required
from uffd.session.models import DeviceLoginConfirmation
from uffd.oauth2.models import OAuth2DeviceLoginInitiation
from uffd import create_app, db

from utils import dump, UffdTestCase

class TestSession(UffdTestCase):
	def setUpApp(self):
		self.app.config['SESSION_LIFETIME_SECONDS'] = 2

		@self.app.route('/test_login_required')
		@login_required()
		def test_login_required():
			return 'SUCCESS', 200

		@self.app.route('/test_group_required1')
		@login_required(group='users')
		def test_group_required1():
			return 'SUCCESS', 200

		@self.app.route('/test_group_required2')
		@login_required(group='notagroup')
		def test_group_required2():
			return 'SUCCESS', 200

	def setUp(self):
		super().setUp()
		self.assertIsNone(request.user)

	def login(self):
		self.login_as('user')
		self.assertIsNotNone(request.user)

	def assertLoggedIn(self):
		self.assertIsNotNone(request.user)
		self.assertEqual(self.client.get(path=url_for('test_login_required'), follow_redirects=True).data, b'SUCCESS')
		self.assertEqual(request.user.loginname, self.get_user().loginname)

	def assertLoggedOut(self):
		self.assertIsNone(request.user)
		self.assertNotEqual(self.client.get(path=url_for('test_login_required'),
							follow_redirects=True).data, b'SUCCESS')
		self.assertEqual(request.user, None)

	def test_login(self):
		self.assertLoggedOut()
		r = self.client.get(path=url_for('session.login'), follow_redirects=True)
		dump('login', r)
		self.assertEqual(r.status_code, 200)
		r = self.login_as('user')
		dump('login_post', r)
		self.assertEqual(r.status_code, 200)
		self.assertLoggedIn()

	def test_titlecase_password(self):
		r = self.client.post(path=url_for('session.login'),
			data={'loginname': self.test_data.get('user').get('loginname').title(), 'password': self.test_data.get('user').get('password')}, follow_redirects=True)
		self.assertEqual(r.status_code, 200)
		self.assertLoggedIn()

	def test_redirect(self):
		r = self.login_as('user', ref=url_for('test_login_required'))
		self.assertEqual(r.status_code, 200)
		self.assertEqual(r.data, b'SUCCESS')

	def test_wrong_password(self):
		r = self.client.post(path=url_for('session.login'),
							data={'loginname': self.test_data.get('user').get('loginname'), 'password': 'wrongpassword'},
							follow_redirects=True)
		dump('login_wrong_password', r)
		self.assertEqual(r.status_code, 200)
		self.assertLoggedOut()

	def test_empty_password(self):
		r = self.client.post(path=url_for('session.login'),
			data={'loginname': self.test_data.get('user').get('loginname'), 'password': ''}, follow_redirects=True)
		dump('login_empty_password', r)
		self.assertEqual(r.status_code, 200)
		self.assertLoggedOut()

	# Regression test for #100 (uncatched LDAPSASLPrepError)
	def test_saslprep_invalid_password(self):
		r = self.client.post(path=url_for('session.login'),
			data={'loginname': self.test_data.get('user').get('loginname'), 'password': 'wrongpassword\n'}, follow_redirects=True)
		dump('login_saslprep_invalid_password', r)
		self.assertEqual(r.status_code, 200)
		self.assertLoggedOut()

	def test_wrong_user(self):
		r = self.client.post(path=url_for('session.login'),
							data={'loginname': 'nouser', 'password': self.test_data.get('user').get('password')},
							follow_redirects=True)
		dump('login_wrong_user', r)
		self.assertEqual(r.status_code, 200)
		self.assertLoggedOut()

	def test_empty_user(self):
		r = self.client.post(path=url_for('session.login'),
			data={'loginname': '', 'password': self.test_data.get('user').get('password')}, follow_redirects=True)
		dump('login_empty_user', r)
		self.assertEqual(r.status_code, 200)
		self.assertLoggedOut()

	def test_no_access(self):
		r = self.client.post(path=url_for('session.login'),
			data={'loginname': 'testservice', 'password': 'servicepassword'}, follow_redirects=True)
		dump('login_no_access', r)
		self.assertEqual(r.status_code, 200)
		self.assertLoggedOut()

	def test_group_required(self):
		self.login()
		self.assertEqual(self.client.get(path=url_for('test_group_required1'),
										follow_redirects=True).data, b'SUCCESS')
		self.assertNotEqual(self.client.get(path=url_for('test_group_required2'),
											follow_redirects=True).data, b'SUCCESS')

	def test_logout(self):
		self.login()
		r = self.client.get(path=url_for('session.logout'), follow_redirects=True)
		dump('logout', r)
		self.assertEqual(r.status_code, 200)
		self.assertLoggedOut()

	@unittest.skip('See #29')
	def test_timeout(self):
		self.login()
		time.sleep(3)
		self.assertLoggedOut()

	def test_ratelimit(self):
		for i in range(20):
			self.client.post(path=url_for('session.login'),
							data={'loginname': self.test_data.get('user').get('loginname'),
								'password': 'wrongpassword_%i'%i}, follow_redirects=True)
		r = self.login_as('user')
		dump('login_ratelimit', r)
		self.assertEqual(r.status_code, 200)
		self.assertIsNone(request.user)

	def test_deviceauth(self):
		self.app.config['OAUTH2_CLIENTS'] = {
			'test': {'client_secret': 'testsecret', 'redirect_uris': ['http://localhost:5009/callback', 'http://localhost:5009/callback2']},
		}
		initiation = OAuth2DeviceLoginInitiation(oauth2_client_id='test')
		db.session.add(initiation)
		db.session.commit()
		code = initiation.code
		self.login()
		r = self.client.get(path=url_for('session.deviceauth'), follow_redirects=True)
		dump('deviceauth', r)
		self.assertEqual(r.status_code, 200)
		r = self.client.get(path=url_for('session.deviceauth', **{'initiation-code': code}), follow_redirects=True)
		dump('deviceauth_check', r)
		self.assertEqual(r.status_code, 200)
		self.assertIn(b'test', r.data)
		r = self.client.post(path=url_for('session.deviceauth_submit'), data={'initiation-code': code}, follow_redirects=True)
		dump('deviceauth_submit', r)
		self.assertEqual(r.status_code, 200)
		initiation = OAuth2DeviceLoginInitiation.query.filter_by(code=code).one()
		self.assertEqual(len(initiation.confirmations), 1)
		self.assertEqual(initiation.confirmations[0].user.loginname, 'testuser')
		self.assertIn(initiation.confirmations[0].code.encode(), r.data)
		r = self.client.get(path=url_for('session.deviceauth_finish'), follow_redirects=True)
		self.assertEqual(r.status_code, 200)
		self.assertEqual(DeviceLoginConfirmation.query.all(), [])

class TestSessionOL(TestSession):
	use_openldap = True

class TestSessionOLUser(TestSessionOL):
	use_userconnection = True