"""
JWT Token Management and Authentication
"""
from datetime import datetime, timedelta
from typing import Optional
from jose import JWTError, jwt
from app.config import settings


def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
    """
    Create JWT access token
    """
    to_encode = data.copy()
    if expires_delta:
        expire = datetime.utcnow() + expires_delta
    else:
        expire = datetime.utcnow() + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
    
    to_encode.update({"exp": expire, "iat": datetime.utcnow()})
    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
    return encoded_jwt


def verify_token(token: str) -> Optional[dict]:
    """
    Verify and decode JWT token
    """
    try:
        payload = jwt.decode(token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM])
        return payload
    except JWTError:
        return None