from fastapi import HTTPException
from sqlalchemy.ext.asyncio import AsyncSession

from modules.fulfillment_base.models import DealProductService
from modules.fulfillment_base.repositories import ProductServiceRepository
from modules.fulfillment_base.schemas.product_service import *


class ProductServiceService:
    schema_class = ProductServiceSchema

    def __init__(self, session: AsyncSession):
        self.repository = ProductServiceRepository(session)

    async def create(
        self, request: CreateProductServiceRequest
    ) -> CreateProductServiceResponse:
        await self.repository.create(request.entity)
        deal_product = await self.repository.get_by_id(
            request.entity.deal_id,
            request.entity.product_id,
            request.entity.service_id,
        )
        return CreateProductServiceResponse(
            entity=ProductServiceSchema.model_validate(deal_product),
            message="Услуга добавлена к товару",
        )

    async def update(
        self,
        deal_id: int,
        product_id: int,
        service_id: int,
        data: UpdateProductServiceRequest,
    ) -> UpdateProductServiceResponse:
        entity = await self.repository.get_by_id(deal_id, product_id, service_id)
        if not entity:
            raise HTTPException(status_code=404, detail=self.entity_not_found_msg)

        await self.repository.update(entity, data.entity)
        return UpdateProductServiceResponse(message="Услуга обновлена")

    async def delete(
        self, deal_id: int, product_id: int, service_id: int
    ) -> DeleteProductServiceResponse:
        entity = await self.repository.get_by_id(deal_id, product_id, service_id)
        if not entity:
            raise HTTPException(status_code=404, detail=self.entity_not_found_msg)

        await self.repository.delete(entity)
        return DeleteProductServiceResponse(message="Товар удален из сделки")

    async def duplicate_product_services(
        self, request: ProductServicesDuplicateRequest
    ) -> ProductServicesDuplicateResponse:
        services_to_copy: list[
            DealProductService
        ] = await self.repository.get_product_services(
            request.deal_id, request.source_deal_product_id
        )

        await self.repository.duplicate_services(
            request.deal_id, request.target_deal_product_ids, services_to_copy
        )
        return ProductServicesDuplicateResponse(message="Услуги продублированы")