from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import WebDriverWait


def check_navigator(driver):
    """检查navigator属性"""
    script = "return window.navigator.webdriver"
    return driver.execute_script(script)


def until_wait(
        driver,
        *,
        xpath=None,
        classname=None,
        text=None,
        timeout=None
):
    """
    显示等待页面加载,否则抛出TimeoutException

    :param driver: 浏览器驱动
    :param xpath: xpath规则，页面等待特征
    :param classname: class属性名称，页面等待特征
    :param text: 期待的文本
    :param timeout: 超时时间
    :return:
    """
    _timeout = (timeout or 60)
    wait = WebDriverWait(driver, _timeout, 0.2)
    if xpath is not None:
        locator = (By.XPATH, xpath)
        if text is not None:
            wait.until(EC.text_to_be_present_in_element(locator, text))
        else:
            wait.until(EC.presence_of_element_located(locator))

    elif classname is not None:
        locator = (By.CLASS_NAME, classname)
        if text is not None:
            wait.until(EC.text_to_be_present_in_element(locator, text))
        else:
            wait.until(EC.presence_of_element_located(locator))


def new_window(driver):
    """新的窗口"""
    driver.execute_script('window.open();')
    handles = driver.window_handles
    driver.switch_to.window(handles[-1])


def get_user_agent(driver):
    return driver.execute_script("return navigator.userAgent;")


def get_title(driver):
    return driver.execute_script('return document.title')