from dataclasses import dataclass

from anydi import singleton
from fansifter_common.auth.requests import AuthRequest
from fansifter_common.auth.services import AuthService
from fansifter_common.auth.types import Permission

from dmp.ad_reporting.dtos import AdReportingCampaign, AdReportingCampaignCriteria
from dmp.ad_reporting.exceptions import AdReportingCampaignNotFoundError
from dmp.ad_reporting.repositories import AdReportingCampaignRepository
from dmp.ad_reporting.services import (
    AdReportingAccountService,
    AdReportingReportService,
)


@dataclass(kw_only=True)
class GetAdReportingReportCampaignRequest(AuthRequest):
    report_id: str
    campaign_id: str


@singleton
class GetAdReportingReportCampaignHandler:
    permission = Permission("ad_report", "view")

    def __init__(
        self,
        auth_service: AuthService,
        campaign_repository: AdReportingCampaignRepository,
        account_service: AdReportingAccountService,
        report_service: AdReportingReportService,
    ) -> None:
        self.auth_service = auth_service
        self.campaign_repository = campaign_repository
        self.account_service = account_service
        self.report_service = report_service

    def handle(
        self, request: GetAdReportingReportCampaignRequest
    ) -> AdReportingCampaign:
        report = self.report_service.get_report(
            report_id=request.report_id,
            identity_id=request.identity_id,
        )

        self.auth_service.check_owned_resource(
            report.identity_id,
            permission=self.permission,
            resource_id=report.id,
        )

        if request.campaign_id not in report.campaign_ids:
            raise AdReportingCampaignNotFoundError

        campaigns = self.campaign_repository.find_by_criteria(
            AdReportingCampaignCriteria(
                campaign_ids={request.campaign_id},
            ),
            limit=1,
        )

        try:
            campaign = campaigns[0]
        except IndexError as exc:
            raise AdReportingCampaignNotFoundError from exc

        ad_account_labels = self.account_service.get_ad_account_labels(
            account_ids={campaign.account_id},
            platform=campaign.platform,
        )

        campaign.accounts = ad_account_labels.get(campaign.account_id, set())
        campaign.report_id = request.report_id
        campaign.report_name = report.name

        return campaign