from sqlalchemy import func
from app.api.utilitys import schema
from app.models.main.utility import TblUtility, UtilityBase
from app.utils.schemas_utils import CustomResponse
from sqlalchemy.orm import Session
from app.dependency.authantication import JWTPayloadSchema
from app.locale.messages import Messages
from fastapi import HTTPException

class UtilityService:
    def __init__(self, db:Session, token:JWTPayloadSchema):
        self.db = db
        self.token = token
        
    async def create_utility(self, request:schema.UtilityCreate):
        created_utility = UtilityBase.model_validate(request.model_dump())
        TblUtility.create_utility(created_utility, self.db)
        self.db.commit()
        return CustomResponse(status="1", message=Messages.UTILITY)
    
    
    async def get_utility(self, group_id:int):
        new_get_utility = TblUtility.get_utility(group_id, self.db)
        if not new_get_utility:
            raise HTTPException(status_code=404, detail="Get group ID not found")
        return [schema.UtilityResponse.model_validate(get_group) for get_group in new_get_utility]
    
    async def get_total_cost(self) ->"TblUtility":
         new_get_total_cost = self.db.query(func.sum(TblUtility.cost_per_month)).scalar()
         return new_get_total_cost
    
    async def update_utility(self, request:schema.UtilityUpdate):
        updated_utility = UtilityBase.model_validate(request.model_dump())
        if updated_utility.utility_id is None:
            return CustomResponse(status="-1", message=Messages.UTILITY_NOT)
        TblUtility.update_utility(updated_utility, updated_utility.utility_id, self.db)
        return CustomResponse(status="1", message=Messages.UTILITY_UPDATE)
    
    async def delete_utility(self, group_id:int):
        deleted_utility = TblUtility.delete_utility(group_id, self.db)
        if not deleted_utility:
            return CustomResponse(status="-1", message=Messages.UTILITY_NOT)
        return CustomResponse(status="1", message=Messages.UTILITY_DELETE)