import argparse
import time
import csv

from selenium import webdriver
from selenium.common.exceptions import StaleElementReferenceException, TimeoutException, ElementNotInteractableException
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.wait import WebDriverWait

from datetime import datetime
from datetime import timedelta

parser = argparse.ArgumentParser(description="邮件批量发送脚本")
parser.add_argument('datasheet')
parser.add_argument('--column', type=str, nargs='?', default='邮箱')
parser.add_argument('--address', type=str, required=True)
parser.add_argument('--password', type=str, required=True)
parser.add_argument('--encoding', type=str, nargs='?', default='utf-8')
parser.add_argument('--timeout', type=int, nargs='?', default=60)
parser.add_argument('--interval', type=int, nargs='?', default=4)
parser.add_argument('--rate-limit', type=int, nargs='?', default=8.33)

args = parser.parse_args()
date = datetime.now()

sent = 0
errors = 0

def main():
    # 读取收件人列表
    print(f'[信息] 正在读取数据表：{args.datasheet}')
    try:
        with open(args.datasheet, 'r', encoding=args.encoding) as file:
            rows = csv.DictReader(file)
            recipients = [row[args.column] for row in rows]
            print(f'[信息] 已读取联系人信息共 {len(recipients)} 条')
    except Exception as e:
        print(f'[!!!!] 读取数据表失败：{e}')
        return 1

    try:
        print('[信息] 正在启动 Chrome 自动化实例')
        driver = webdriver.Chrome()

        print('[信息] 正在载入网页')
        driver.get('https://id.ionos.fr/identifier')
    except Exception as e:
        print(f'[!!!!] 初始化时发生了错误：{e}')
        return 2

    try:
        selectAll = locate(driver, EC.element_to_be_clickable, (By.ID, 'selectAll'))
        selectAll.click()
    except:
        pass

    try:
        print(f'[信息] 正在登陆 {args.address}')
        username = locate(driver, EC.element_to_be_clickable, (By.ID, 'username'))
        username.send_keys(args.address)

        submit = locate(driver, EC.element_to_be_clickable, (By.ID, 'button--with-loader'))
        submit.click()

        password = locate(driver, EC.element_to_be_clickable, (By.ID, 'password'))
        password.send_keys(args.password)

        submit = locate(driver, EC.element_to_be_clickable, (By.ID, 'button--with-loader'))
        submit.click()
    except Exception as e:
        print(f'[!!!!] 登录时发生了错误：{e}')
        return 4

    try:
        drafts = locate(driver, EC.presence_of_element_located, (By.CSS_SELECTOR, "li[data-id='default0/Brouillons']"))
        driver.execute_script('arguments[0].click();', drafts)
        
        drafts = locate(driver, EC.presence_of_element_located, (By.CSS_SELECTOR, "button[data-id='default0/Brouillons']"))
        driver.execute_script('arguments[0].click();', drafts)

        items = locate(driver, EC.presence_of_element_located, (By.CSS_SELECTOR, "ul[aria-label='List view']"))
        mail = locate(items, EC.presence_of_element_located, (By.CSS_SELECTOR, "li[data-index='0']"))
        mail.click()

        subject = locate(driver, EC.presence_of_element_located, (By.CSS_SELECTOR, "h1.subject"))
        print(f'[信息] 已读取邮件：{subject.text}')

        header = locate(driver, EC.presence_of_element_located, (By.TAG_NAME, 'header'))
        sender = header.find_element(By.CSS_SELECTOR, "div.from")
        print(f'[信息] 指定发件人：{sender.text[6:].replace('\n', ' ')}')
    except Exception as e:
        print(f'[!!!!] 读取邮件时发生了错误：{e}')
        return 5

    rate = 60 / (args.interval + 4)

    print(f'[信息] 当前发送速率 {rate} 封/分钟')
    print(f'[信息] 预计使用时间 {timedelta(seconds=rate * len(recipients))}')

    if rate > args.rate_limit:
        print('[警告] 当前发送速率已超出速率限制')

    key = input('[????] 是否确定发送？确定 (Y) / 取消 (N): ')

    if key == 'y' or key == 'Y':
        print('[信息] 已确定发送')
    else:
        print('[信息] 已取消发送')
        exit()

    global date
    global sent
    global errors

    date = datetime.now()

    for recipient in recipients:
        try:
            print(f'[信息] 正在发送：{recipient}')
            edit = locate(driver, EC.element_to_be_clickable, (By.CSS_SELECTOR, "button[aria-label='Edit copy']"))
            edit.click()

            # 等待页面加载
            locate(driver, EC.invisibility_of_element_located, (By.CSS_SELECTOR, "div.window-blocker.io-ox-busy"))

            mails = driver.find_elements(By.CSS_SELECTOR, "div.io-ox-mail-compose-window")
            draft = mails[-1:][0]

            # 等待页面加载
            locate(driver, EC.invisibility_of_element_located, (By.CSS_SELECTOR, "div.window-blocker.io-ox-busy"))

            title = locate(draft, EC.element_to_be_clickable, (By.CSS_SELECTOR, "div.floating-header"))
            title.click()

            to = locate(draft, EC.element_to_be_clickable, (By.CSS_SELECTOR, "input.token-input.tt-input[tabindex='0']"))
            to.send_keys(recipient)

            send = locate(draft, EC.element_to_be_clickable, (By.CSS_SELECTOR, "button[data-action='send']"))
            send.click()

            sent += 1
            time.sleep(args.interval)
        except Exception as e:
            print(f'[!!!!] 发生错误：{e}')
            return 6

        try:
            stale = driver.find_element(By.CSS_SELECTOR, "div.io-ox-mail-compose-window")
        except:
            continue

        alert = locate(driver, EC.element_to_be_clickable, (By.CSS_SELECTOR, "div.io-ox-alert.io-ox-alert-error"))
        message = alert.text.replace('\n', ' ')

        print(f'[警告] 来自网页：{message}')
        errors += 1

        button = locate(stale, EC.element_to_be_clickable, (By.CSS_SELECTOR, "button[data-action='close']"))
        button.click()

        modal = locate(driver, EC.element_to_be_clickable, (By.CSS_SELECTOR, "div.modal-footer"))
        button = locate(modal, EC.element_to_be_clickable, (By.CSS_SELECTOR, "button[data-action='delete']"))
        button.click()

def locate(driver, condition, locator):
    while True:
        try:
            wait = WebDriverWait(driver, timeout=args.timeout)
            return wait.until(condition(locator))
        except StaleElementReferenceException:
            # 如果遇到过期元素，重新尝试查找
            continue
        except TimeoutException:
            raise Exception('操作超时')

try:
    status = main()
except KeyboardInterrupt:
    print('[信息] 程序中断')
    status = 145

print(f'[信息] 已发送 {sent} 封；发送失败 {errors} 封')
print(f'[信息] 总耗时 {str(datetime.now() - date)}')
exit(status)