from sqlalchemy.orm import Session
from datetime import datetime
from typing import Optional
from fastapi import HTTPException
from app.modules.license.models import License
from app.modules.license.schema import 


class LicenseService:
    @staticmethod
    def create_license(db: Session, data: ):
        
        
        
        
        new_license = License(**data.dict())
        db.add(new_license)
        db.commit()
        db.refresh(new_license)
        return new_license

    @staticmethod
    def get_license(db: Session, license_id: int, current_user):
        license = db.query(License).filter(License.id == license_id).first()
        if not license:
            raise ValueError("license no encontrado")
        return license

    @staticmethod
    def update_license(db: Session, license_id: int, data: , current_user):
        license = db.query(License).filter(License.id == license_id).first()
        if not license:
            raise ValueError("license no encontrado")
        
        if current_user.role not in ["ROOT", "ADMIN"]:
            raise ValueError("No tienes permisos para actualizar este license")
        
        update_data = data.dict(exclude_unset=True)
        for key, value in update_data.items():
            setattr(license, key, value)
        
        db.commit()
        db.refresh(license)
        return license

    @staticmethod
    def delete_license(db: Session, license_id: int, current_user):
        license = db.query(License).filter(License.id == license_id).first()
        if not license:
            raise ValueError("license no encontrado")
        
        if current_user.role not in ["ROOT", "ADMIN"]:
            raise ValueError("No tienes permisos para eliminar este license")
        
        try:
            license.is_active = False
            license.deleted_at = datetime.utcnow()
            license.deleted_by = current_user.id
            db.commit()
            db.refresh(license)
        except Exception as e:
            db.rollback()
            raise ValueError(f"Error al eliminar el license: {e}")
        
        return {"message": "license eliminado correctamente"}