from typing import Sequence
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy import select, delete, update
from ..schemas import LoginRead, LoginCreate, LoginUpdate
from ..models import LoginModel

from utils.hashing import get_password_hash

async def get_all_logins(
        session: AsyncSession
) -> Sequence[LoginModel]:
    stmt = select(LoginModel).order_by(LoginModel.id)
    result = await session.scalars(stmt)
    return result.all()

async def get_login(
        session: AsyncSession,
        login_id: int
) -> LoginModel:
    db_login = await session.get(LoginModel,login_id)
    if  db_login is None:
        return None
    return db_login

async def create_login(
        session:AsyncSession,
        login_create: LoginCreate
) -> LoginModel:
    login = LoginModel(**login_create.model_dump())
    login.password = get_password_hash(login.password)
    session.add(login)
    await session.commit()
    return login

async def delete_login(
        session: AsyncSession,
        login_id: int
):
    db_login = await session.get(LoginModel,login_id)
    if  db_login is None:
        return None
    stmt = delete(LoginModel).filter(LoginModel.id == login_id)
    await session.execute(stmt)
    await session.commit()

async def update_login(
        session:AsyncSession,
        login_id: int,
        login_update: LoginUpdate
) -> LoginModel:
    db_login = await session.get(LoginModel,login_id)
    if  db_login is None:
        return None
    for var, value in vars(login_update).items():
        setattr(db_login, var, value if var != "password" else get_password_hash(value)) if value else None
    await session.commit()
    return db_login