from __future__ import annotations

import os

try:
    from platformdirs import user_config_dir
    has_platformdirs = True
except ImportError:
    has_platformdirs = False
try:
    from browser_cookie3 import (
        chrome, chromium, opera, opera_gx,
        brave, edge, vivaldi, firefox,
        _LinuxPasswordManager, BrowserCookieError
    )
    has_browser_cookie3 = True
except ImportError:
    has_browser_cookie3 = False

from .typing import Dict, Cookies
from .errors import MissingRequirementsError
from . import debug

# Global variable to store cookies
_cookies: Dict[str, Cookies] = {}

if has_browser_cookie3 and os.environ.get('DBUS_SESSION_BUS_ADDRESS') == "/dev/null":
    _LinuxPasswordManager.get_password = lambda a, b: b"secret"

def get_cookies(domain_name: str = '', raise_requirements_error: bool = True, single_browser: bool = False) -> 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, raise_requirements_error, single_browser)
    _cookies[domain_name] = cookies
    return cookies

def set_cookies(domain_name: str, cookies: Cookies = None) -> None:
    if cookies:
        _cookies[domain_name] = cookies
    elif domain_name in _cookies:
        _cookies.pop(domain_name)

def load_cookies_from_browsers(domain_name: str, raise_requirements_error: bool = True, single_browser: bool = False) -> Cookies:
    """
    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.
    """
    if not has_browser_cookie3:
        if raise_requirements_error:
            raise MissingRequirementsError('Install "browser_cookie3" package')
        return {}
    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
            if single_browser and len(cookie_jar):
                break
        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.
    """
    if not has_platformdirs:
        return []
    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)