#Authentication utilities and dependencies
import jwt
from fastapi import Request, HTTPException
import config as config_module


def get_current_user(request: Request) -> dict:
    #Dependency to check authentication and return user info
    token = request.cookies.get("auth_token")

    if not token:
        raise HTTPException(status_code=401, detail="Not authenticated")

    try:
        payload = jwt.decode(token, config_module.JWT_SECRET, algorithms=["HS256"])
        return payload
    except jwt.ExpiredSignatureError:
        raise HTTPException(status_code=401, detail="Token expired")
    except jwt.InvalidTokenError:
        raise HTTPException(status_code=401, detail="Invalid token")


def check_auth(request: Request) -> bool:
    #Check if user is authenticated (returns bool, doesn't raise exception)
    token = request.cookies.get("auth_token")
    if not token:
        return False

    try:
        jwt.decode(token, config_module.JWT_SECRET, algorithms=["HS256"])
        return True
    except (jwt.ExpiredSignatureError, jwt.InvalidTokenError):
        return False