from __future__ import annotations
import asyncio
import os
import random
import secrets
import string
from asyncio import AbstractEventLoop
from platformdirs import user_config_dir
from browser_cookie3 import (
chrome, chromium, opera, opera_gx,
brave, edge, vivaldi, firefox,
_LinuxPasswordManager, BrowserCookieError
)
from ..typing import Dict, Messages
from .. import debug
# Global variable to store cookies
_cookies: Dict[str, Dict[str, str]] = {}
def get_event_loop() -> AbstractEventLoop:
"""
Get the current asyncio event loop. If the loop is closed or not set, create a new event loop.
If a loop is running, handle nested event loops. Patch the loop if 'nest_asyncio' is installed.
Returns:
AbstractEventLoop: The current or new event loop.
"""
try:
loop = asyncio.get_running_loop()
if not hasattr(loop.__class__, "_nest_patched"):
import nest_asyncio
nest_asyncio.apply(loop)
except RuntimeError:
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)
except ImportError:
raise RuntimeError(
'Use "create_async" instead of "create" function in a running event loop. Or install "nest_asyncio" package.'
)
return loop
if os.environ.get('DBUS_SESSION_BUS_ADDRESS') == "/dev/null":
_LinuxPasswordManager.get_password = lambda a, b: b"secret"
def get_cookies(domain_name: str = '') -> Dict[str, str]:
"""
Load cookies for a given domain from all supported browsers and cache the results.
Args:
domain_name (str): The domain for which to load cookies.
Returns:
Dict[str, str]: A dictionary of cookie names and values.
"""
if domain_name in _cookies:
return _cookies[domain_name]
cookies = _load_cookies_from_browsers(domain_name)
_cookies[domain_name] = cookies
return cookies
def _load_cookies_from_browsers(domain_name: str) -> Dict[str, str]:
"""
Helper function to load cookies from various browsers.
Args:
domain_name (str): The domain for which to load cookies.
Returns:
Dict[str, str]: A dictionary of cookie names and values.
"""
cookies = {}
for cookie_fn in [_g4f, chrome, chromium, opera, opera_gx, brave, edge, vivaldi, firefox]:
try:
cookie_jar = cookie_fn(domain_name=domain_name)
if len(cookie_jar) and debug.logging:
print(f"Read cookies from {cookie_fn.__name__} for {domain_name}")
for cookie in cookie_jar:
if cookie.name not in cookies:
cookies[cookie.name] = cookie.value
except BrowserCookieError:
pass
except Exception as e:
if debug.logging:
print(f"Error reading cookies from {cookie_fn.__name__} for {domain_name}: {e}")
return cookies
def _g4f(domain_name: str) -> list:
"""
Load cookies from the 'g4f' browser (if exists).
Args:
domain_name (str): The domain for which to load cookies.
Returns:
list: List of cookies.
"""
user_data_dir = user_config_dir("g4f")
cookie_file = os.path.join(user_data_dir, "Default", "Cookies")
return [] if not os.path.exists(cookie_file) else chrome(cookie_file, domain_name)
def format_prompt(messages: Messages, add_special_tokens=False) -> str:
"""
Format a series of messages into a single string, optionally adding special tokens.
Args:
messages (Messages): A list of message dictionaries, each containing 'role' and 'content'.
add_special_tokens (bool): Whether to add special formatting tokens.
Returns:
str: A formatted string containing all messages.
"""
if not add_special_tokens and len(messages) <= 1:
return messages[0]["content"]
formatted = "\n".join([
f'{message["role"].capitalize()}: {message["content"]}'
for message in messages
])
return f"{formatted}\nAssistant:"
def get_random_string(length: int = 10) -> str:
"""
Generate a random string of specified length, containing lowercase letters and digits.
Args:
length (int, optional): Length of the random string to generate. Defaults to 10.
Returns:
str: A random string of the specified length.
"""
return ''.join(
random.choice(string.ascii_lowercase + string.digits)
for _ in range(length)
)
def get_random_hex() -> str:
"""
Generate a random hexadecimal string of a fixed length.
Returns:
str: A random hexadecimal string of 32 characters (16 bytes).
"""
return secrets.token_hex(16).zfill(32)
