from sqlalchemy.orm import Session
from fastapi import HTTPException
from app.models.user import User
from app.core.security import get_password_hash
from app.schemas.user import UserCreate

class UserService:
    def __init__(self, db: Session):
        self._db = db

    def get_users(self, skip: int = 0, limit: int = 100):
        return self._db.query(User).offset(skip).limit(limit).all()

    def create_user(self, user: UserCreate):
        db_user = self._db.query(User).filter(User.email == user.email).first()
        if db_user:
            raise HTTPException(status_code=400, detail="Email already registered")
        hashed_password = get_password_hash(user.password)
        db_user = User(
            email=user.email,
            hashed_password=hashed_password,
            full_name=user.full_name,
            role=user.role
        )
        self._db.add(db_user)
        self._db.commit()
        self._db.refresh(db_user)
        return db_user