from sqlalchemy.orm import Session

from models.user import User

from core.security import (
    hash_password,
    verify_password
)


def get_user_by_email(
    db: Session,
    email: str
):
    return (
        db.query(User)
        .filter(User.email == email)
        .first()
    )


def create_user(
    db: Session,
    name: str,
    email: str,
    password: str
):
    user = User(
        name=name,
        email=email,
        password_hash=hash_password(password)
    )

    db.add(user)
    db.commit()
    db.refresh(user)

    return user


def authenticate_user(
    db: Session,
    email: str,
    password: str
):
    user = get_user_by_email(db, email)

    if not user:
        return None

    if not verify_password(
        password,
        user.password_hash
    ):
        return None

    return user