from sqlalchemy.orm import Session
from datetime import datetime
from typing import Optional
from fastapi import HTTPException
from app.modules.configuration.models import Configuration
from app.modules.configuration.schema import ConfigCreate, ConfigResponse, Configupdate, MessageResponse


class ConfigurationService:
    @staticmethod
    def create_configuration(db: Session, data: ConfigCreate):
        
        new_configuration = Configuration(**data.dict())
        db.add(new_configuration)
        db.commit()
        db.refresh(new_configuration)
        return new_configuration

    @staticmethod
    def get_configuration(db: Session, configuration_id: int, current_user):
        configuration = db.query(Configuration).filter(Configuration.id == configuration_id).first()
        if not configuration:
            raise ValueError("configuration no encontrado")
        return configuration

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

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