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 fansifter_common.utils import timezone

from email_campaigns.automated.exceptions import AutomatedEmailHasTriggerError
from email_campaigns.automated.repositories import AutomatedEmailRepository
from email_campaigns.emails.exceptions import EmailNotFoundError


@dataclass(kw_only=True)
class DeleteAutomatedEmailRequest(AuthRequest):
    email_id: str


@singleton
class DeleteAutomatedEmailHandler:
    permission = Permission("email_campaign", "delete")

    def __init__(
        self,
        auth_service: AuthService,
        automated_email_repository: AutomatedEmailRepository,
    ) -> None:
        self.auth_service = auth_service
        self.automated_email_repository = automated_email_repository

    def handle(self, request: DeleteAutomatedEmailRequest) -> None:
        automated_email = self.automated_email_repository.get(request.email_id)
        if automated_email is None:
            raise EmailNotFoundError

        if automated_email.is_automated:
            raise AutomatedEmailHasTriggerError

        self.auth_service.authorize_account(
            request.identity_id,
            account=automated_email.account,
            permission=self.permission,
        )

        automated_email.deleted_at = timezone.now()
        automated_email.deleted_by = request.identity_id

        self.automated_email_repository.save(automated_email)

        return None