from dataclasses import dataclass

from campaigns.auth.dtos import User
from campaigns.connectors.db import Database, session_context
from campaigns.core.handler import Handler
from campaigns.meta.services import CampaignService, CampaignVideoService


@dataclass(frozen=True)
class DeleteCampaignVideoRequest:
    user: User
    campaign_id: str
    video_id: str


@dataclass
class DeleteCampaignVideoHandler(Handler[DeleteCampaignVideoRequest, None]):
    db: Database
    campaign_service: CampaignService
    campaign_video_service: CampaignVideoService

    @session_context(in_transaction=True)
    async def handle(self, request: DeleteCampaignVideoRequest) -> None:
        campaign = await self.campaign_service.get_user_campaign(
            user=request.user, campaign_id=request.campaign_id
        )
        video = campaign.get_video(request.video_id)

        await self.campaign_video_service.delete_video(video)