from flask import Response
from datetime import datetime
from auth.auth_view import AuthorizedView
from campaign_ads.services.campaign_ads_exporter import CampaignAdsExporter
from campaign_ads.permissions.campaign_ads_permissions import CampaignAdsPermissions
from shared.validators import validate_UUID
from utils.handlers import get_request_query_model
from campaign_ads.schemas import CampaignAdsExportParams
from dateutil.tz import gettz


class ExportCampaignAdsView(AuthorizedView):
    permissions = CampaignAdsPermissions()

    def get(self, campaign_uuid: str):
        validate_UUID(campaign_uuid)
        params = get_request_query_model(CampaignAdsExportParams)
        service = CampaignAdsExporter()
        csv_content = service.export_campaign_ads_csv(campaign_uuid, params)
        response = Response(csv_content, mimetype="text/csv")
        response.headers["Content-Disposition"] = "attachment; filename={} Ad Sets.csv".format(
            datetime.now(gettz(params.timeZone)).strftime("%Y-%m-%d %H-%M-%S")
        )
        return response