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.models import CampaignVideo
from campaigns.meta.services import CampaignService


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


@dataclass
class GetCampaignVideoHandler(
    Handler[GetCampaignVideoRequest, CampaignVideo],
):
    db: Database
    campaign_service: CampaignService

    @session_context(in_transaction=False)
    async def handle(self, request: GetCampaignVideoRequest) -> CampaignVideo:
        campaign = await self.campaign_service.get_user_campaign(
            user=request.user, campaign_id=request.campaign_id
        )
        return campaign.get_video(request.video_id)