from datetime import datetime, timedelta, timezone
from typing import Any, Union
from jose import jwt
from passlib.context import CryptContext
from app.core.config import settings

pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")

ALGORITHM = "HS256"

def verify_password(plain_password: str, hashed_password: str) -> bool:
    """Verify a plain password against its hashed version."""
    return pwd_context.verify(plain_password, hashed_password)

def get_password_hash(password: str) -> str:
    """Hash a password using bcrypt."""
    return pwd_context.hash(password)

def create_access_token(subject: Union[str, Any], expires_delta: timedelta = None) -> str:
    """Create a short-lived JWT Access Token."""
    if expires_delta:
        expire = datetime.now(timezone.utc) + expires_delta
    else:
        expire = datetime.now(timezone.utc) + timedelta(minutes=60)  # Default 60 mins
    
    to_encode = {"exp": expire, "sub": str(subject), "type": "access"}
    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=ALGORITHM)
    return encoded_jwt

def create_refresh_token(subject: Union[str, Any], expires_delta: timedelta = None) -> str:
    """Create a long-lived JWT Refresh Token."""
    if expires_delta:
        expire = datetime.now(timezone.utc) + expires_delta
    else:
        # Default 7 hari untuk refresh token
        expire = datetime.now(timezone.utc) + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
    
    to_encode = {"exp": expire, "sub": str(subject), "type": "refresh"}
    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=ALGORITHM)
    return encoded_jwt