from models import DealGroup, Deal
from repositories import DealRepository
from repositories.mixins import *
from schemas.deal_group import UpdateDealGroupSchema


class DealGroupRepository(
    BaseRepository,
    RepGetByIdMixin[DealGroup],
    RepUpdateMixin[DealGroup, UpdateDealGroupSchema],
):
    entity_class = DealGroup

    async def create(self, deals: list[Deal], lexorank: str) -> DealGroup:
        group = DealGroup(deals=deals, lexorank=lexorank)
        self.session.add(group)
        await self.session.commit()
        await self.session.refresh(group)
        return group

    async def update(self, entity: DealGroup, data: UpdateDealGroupSchema) -> DealGroup:
        if data.status_id:
            deal_repo = DealRepository(self.session)
            deals = await deal_repo.get_by_group_id(entity.id)
            for deal in deals:
                await deal_repo.update_status(deal, data.status_id)
            del data.status_id
        return await self._apply_update_data_to_model(entity, data, True)

    async def update_group_deals(
        self, group_id: int, old_deals: list[Deal], new_deals: list[Deal]
    ):
        old_set = set(old_deals)
        new_set = set(new_deals)
        deals_to_remove = old_set - new_set
        deals_to_add = new_set - old_set

        for deal in deals_to_remove:
            deal.group_id = None
        for deal in deals_to_add:
            deal.group_id = group_id

        self.session.add_all([*deals_to_remove, *deals_to_add])
        await self.session.commit()

    async def delete(self, group_id: int) -> None:
        deal_repo = DealRepository(self.session)
        deals = await deal_repo.get_by_group_id(group_id)
        for deal in deals:
            deal.is_deleted = True
            self.session.add(deal)
        await self.session.commit()