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from __future__ import annotations
import time
from ...typing import CreateResult, Messages
from ..base_provider import BaseProvider
from ..helper import WebDriver, format_prompt, get_browser
class Bard(BaseProvider):
url = "https://bard.google.com"
working = True
needs_auth = True
@classmethod
def create_completion(
cls,
model: str,
messages: Messages,
stream: bool,
proxy: str = None,
browser: WebDriver = None,
user_data_dir: str = None,
headless: bool = True,
**kwargs
) -> CreateResult:
prompt = format_prompt(messages)
driver = browser if browser else get_browser(user_data_dir, headless, proxy)
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
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 browser:
driver.quit()
driver = get_browser(None, False, proxy)
driver.get(f"{cls.url}/chat")
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.")
try:
# 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.ql-blank.textarea").send_keys(prompt)
driver.find_element(By.CSS_SELECTOR, "button.send-button").click()
# Yield response
while True:
chunk = driver.execute_script("return window._message;")
if chunk:
yield chunk
return
else:
time.sleep(0.1)
finally:
if not browser:
driver.close()
time.sleep(0.1)
driver.quit()
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