import logging
from typing import Optional
from uuid import UUID

from sqlmodel import Session, select

from app.core.security import get_password_hash, verify_password
from app.crud.shop_crud import get_shop_id_from_uuid
from app.database.models.user_model import User, UserRole
from app.schemas.user_schemas import UserRegister
from app.utils.models import generate_user_uuid5

logger = logging.getLogger(__name__)


def get_user_by_generated_uuid(session: Session, email: str, shop_uuid: Optional[UUID]) -> Optional[User]:
    logger.debug("Getting shop id by UUID - %s", shop_uuid)
    shop_id = get_shop_id_from_uuid(session, shop_uuid)
    logger.debug("Generating user UUID5")
    user_uuid = generate_user_uuid5(email, shop_id)
    stmt = select(User).where(User.uuid == user_uuid)
    logger.debug("Executing select query")
    db_user = session.exec(stmt).one_or_none()
    return db_user

def create_user(session: Session, user_register: UserRegister, shop_uuid: Optional[UUID], user_role: UserRole):
    logger.debug("Getting shop id by UUID - %s", shop_uuid)
    shop_id = get_shop_id_from_uuid(session, shop_uuid)
    logger.debug("Generating user UUID5")
    user_uuid = generate_user_uuid5(user_register.email, shop_id)
    logger.debug("Hashing password")
    hashed_password = get_password_hash(user_register.password)
    new_user = User(
        uuid=user_uuid,
        shop_id=shop_id,
        email=user_register.email,
        username=user_register.username,
        phone_number=user_register.phone_number,
        user_role=user_role,
        password=hashed_password
        )
    logger.debug("Inserting new user")
    session.add(new_user)
    session.commit()


def authenticate(session: Session, email: str, password: str, shop_uuid: Optional[int]) -> Optional[User]:
    logger.debug("Getting shop id by UUID - %s", shop_uuid)
    shop_id = get_shop_id_from_uuid(session, shop_uuid)
    logger.debug("Fetching user from db by email - %s", email)
    db_user = get_user_by_generated_uuid(session, email, shop_id)
    if db_user is None:
        logger.warn("Didn't find User with email=%s for shop=%s", email, shop_uuid)
        return None
    if not verify_password(plain_password=password, hashed_password=db_user.password):
        logger.warn("Found user with email=%s for shop=%s", email, shop_uuid)
        return None
    return db_user