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from __future__ import annotations
import time
import os
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.keys import Keys
from ...typing import CreateResult, Messages
from ..base_provider import AbstractProvider
from ..helper import format_prompt
from ...webdriver import WebDriver, WebDriverSession
class Bard(AbstractProvider):
url = "https://bard.google.com"
working = True
needs_auth = True
@classmethod
def create_completion(
cls,
model: str,
messages: Messages,
stream: bool,
proxy: str = None,
webdriver: WebDriver = None,
user_data_dir: str = None,
headless: bool = True,
**kwargs
) -> CreateResult:
prompt = format_prompt(messages)
session = WebDriverSession(webdriver, user_data_dir, headless, proxy=proxy)
with session as driver:
try:
driver.get(f"{cls.url}/chat")
wait = WebDriverWait(driver, 10 if headless else 240)
wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, "div.ql-editor.textarea")))
except:
# Reopen browser for login
if not webdriver:
driver = session.reopen()
driver.get(f"{cls.url}/chat")
login_url = os.environ.get("G4F_LOGIN_URL")
if login_url:
yield f"Please login: [Google Bard]({login_url})\n\n"
wait = WebDriverWait(driver, 240)
wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, "div.ql-editor.textarea")))
else:
raise RuntimeError("Prompt textarea not found. You may not be logged in.")
# Add hook in XMLHttpRequest
script = """
const _http_request_open = XMLHttpRequest.prototype.open;
window._message = "";
XMLHttpRequest.prototype.open = function(method, url) {
if (url.includes("/assistant.lamda.BardFrontendService/StreamGenerate")) {
this.addEventListener("load", (event) => {
window._message = JSON.parse(JSON.parse(this.responseText.split("\\n")[3])[0][2])[4][0][1][0];
});
}
return _http_request_open.call(this, method, url);
}
"""
driver.execute_script(script)
# Submit prompt
driver.find_element(By.CSS_SELECTOR, "div.ql-editor.textarea").send_keys(prompt)
driver.find_element(By.CSS_SELECTOR, "div.ql-editor.textarea").send_keys(Keys.ENTER)
# Yield response
while True:
chunk = driver.execute_script("return window._message;")
if chunk:
yield chunk
return
else:
time.sleep(0.1)
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