import unittest
import inspect
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions


def wait_net_service(server, port, timeout=None):
    """ Wait for network service to appear
        @param timeout: in seconds, if None or 0 wait forever
        @return: True of False, if timeout is None may return only True or
                 throw unhandled network exception
    """
    import socket
    import errno

    s = socket.socket()
    if timeout:
        from time import time as now
        # time module is needed to calc timeout shared between two exceptions
        end = now() + timeout

    while True:
        try:
            if timeout:
                next_timeout = end - now()
                if next_timeout < 0:
                    return False
                else:
                    s.settimeout(next_timeout)

            s.connect((server, port))

        except socket.timeout as err:
            # this exception occurs only if timeout is set
            if timeout:
                return False

        except socket.error as err:
            # catch timeout exception from underlying network library
            # this one is different from socket.timeout
            if type(err.args) != tuple or err[0] != errno.ETIMEDOUT:
                raise
        else:
            s.close()
            return True


class BaseTestCase(unittest.TestCase):
    def setUp(self):
        self.screen_shot_counter = 0
        self.driver = webdriver.Remote(
            command_executor='http://selenium:4444/wd/hub',
            desired_capabilities=DesiredCapabilities.FIREFOX)
        self.driver.get("http://rollerverbrauch:5000")
        WebDriverWait(self.driver, 10).until(expected_conditions.presence_of_element_located((By.ID, "email")))

    def create_screenshot(self):
        self.driver.get_screenshot_as_file(
            '/results/%s_%s_%s.png' % (self.__class__.__name__, inspect.stack()[1][3], str(self.screen_shot_counter)))
        self.screen_shot_counter += 1

    def tearDown(self):
        self.driver.close()


class RegisterCheck(BaseTestCase):
    def setUp(self):
        self.screen_shot_counter = 0
        self.driver = webdriver.Remote(
            command_executor='http://selenium:4444/wd/hub',
            desired_capabilities=DesiredCapabilities.FIREFOX)
        self.driver.get("http://rollerverbrauch:5000")
        WebDriverWait(self.driver, 10).until(expected_conditions.presence_of_element_located((By.ID, "email")))

    def test_page_loads(self):
        self.driver.get("http://rollerverbrauch:5000")
        self.create_screenshot()
        self.assertIn("refuel", self.driver.title, "Title must contain reload")

    def test_can_register(self):
        self.driver.get("http://rollerverbrauch:5000")
        self.driver.find_element_by_partial_link_text('Register').click()
        self.create_screenshot()
        WebDriverWait(self.driver, 10).until(expected_conditions.presence_of_element_located((By.ID, "submit")))
        self.create_screenshot()
        self.driver.find_element_by_id('email').send_keys('test@test.com')
        self.driver.find_element_by_id('password').send_keys('test123')
        self.driver.find_element_by_id('password_confirm').send_keys('test123')
        self.create_screenshot()
        self.driver.find_element_by_id('submit').click()
        WebDriverWait(self.driver, 10).until(expected_conditions.presence_of_element_located((By.ID, "i1")))
        self.create_screenshot()

    def test_register_must_repeat_pwd(self):
        self.driver.get("http://rollerverbrauch:5000")
        self.driver.find_element_by_partial_link_text('Register').click()
        self.create_screenshot()
        WebDriverWait(self.driver, 10).until(expected_conditions.presence_of_element_located((By.ID, "submit")))
        self.create_screenshot()
        self.driver.find_element_by_id('email').send_keys('test1@test.com')
        self.driver.find_element_by_id('password').send_keys('test123')
        self.create_screenshot()
        self.driver.find_element_by_id('submit').click()
        self.create_screenshot()
        error = self.driver.find_elements_by_class_name('error')
        self.assertIsNotNone(error[0], 'we expect an error')
        self.assertIn('Passwords do not match', error[0].text, 'wrong error message')

    def test_register_must_be_equal_pwd(self):
        self.driver.get("http://rollerverbrauch:5000")
        self.driver.find_element_by_partial_link_text('Register').click()
        self.create_screenshot()
        WebDriverWait(self.driver, 10).until(expected_conditions.presence_of_element_located((By.ID, "submit")))
        self.create_screenshot()
        self.driver.find_element_by_id('email').send_keys('test1@test.com')
        self.driver.find_element_by_id('password').send_keys('test123')
        self.driver.find_element_by_id('password_confirm').send_keys('test1234')
        self.create_screenshot()
        self.driver.find_element_by_id('submit').click()
        self.create_screenshot()
        error = self.driver.find_elements_by_class_name('error')
        self.assertIsNotNone(error[0], 'we expect an error')
        self.assertIn('Passwords do not match', error[0].text, 'wrong error message')


class LoginCheck(BaseTestCase):

    def can_login(self):
        pass

if __name__ == "__main__":
    wait_net_service('selenium', 4444)
    unittest.main()