from datetime import datetime, timedelta, timezone

from jose import JWTError, 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:
    return pwd_context.verify(plain_password, hashed_password)


def get_password_hash(password: str) -> str:
    return pwd_context.hash(password)


def create_access_token(
    subject: str | int, expires_delta: timedelta | None = None
) -> str:
    now = datetime.now(timezone.utc)
    expire = now + (
        expires_delta
        if expires_delta
        else timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
    )
    to_encode = {"sub": str(subject), "exp": expire, "type": "access"}
    return jwt.encode(to_encode, settings.SECRET_KEY, algorithm=ALGORITHM)


def create_refresh_token(subject: str | int) -> str:
    now = datetime.now(timezone.utc)
    expire = now + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS)
    to_encode = {"sub": str(subject), "exp": expire, "type": "refresh"}
    return jwt.encode(to_encode, settings.SECRET_KEY, algorithm=ALGORITHM)


def decode_token(token: str) -> dict:
    try:
        payload = jwt.decode(token, settings.SECRET_KEY, algorithms=[ALGORITHM])
    except JWTError as exc:
        raise ValueError("Invalid token") from exc
    return payload