from datetime import datetime, timedelta, timezone
from sqlmodel import Session, SQLModel, create_engine
from passlib.context import CryptContext
from jose import jwt
from config import settings


db_url = settings.DB_SQLITE


engine = create_engine(db_url, echo=True, 
                       connect_args={"check_same_thread": False}
                    )


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


def create_db_and_tables():
    SQLModel.metadata.create_all(engine)


def get_session():
    with Session(engine) as session:
        yield session


def verify_password(plain_password, hashed_password):
    return pwd_context.verify(plain_password, hashed_password)


def get_password_hash(password):
    return pwd_context.hash(password)


def create_access_token(data: dict, expires_delta: timedelta | None = None):
    to_encode = data.copy()
    if expires_delta:
        expire = datetime.now(timezone.utc) + expires_delta
    else:
        expire = datetime.now(timezone.utc) + timedelta(minutes=15)
    to_encode.update({"exp": expire})
    print(to_encode)
    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
    return encoded_jwt