from dataclasses import replace

from anydi import singleton
from fansifter_common.adapters.ows_account import OwsAccountClient
from fansifter_common.adapters.ows_users import OwsUsersClient
from fansifter_common.adapters.sendgrid import SendGridClient
from fansifter_common.auth.services import AuthService
from fansifter_common.auth.types import Permission
from fansifter_common.legal_info.services import LegalInfoService
from fansifter_common.translation.services import TranslationService

from email_campaigns.adapters.db import Repository
from email_campaigns.adapters.features import (
    AUDIENCE_ENABLE_STRIPO_PLUGIN_V2,
    Features,
)
from email_campaigns.adapters.stripo import AutomatedStripoClientV2
from email_campaigns.automated.models import AutomatedEmail
from email_campaigns.emails.exceptions import EmailNotFoundError
from email_campaigns.emails.handlers import (
    GetEmailPreviewHandler,
    GetEmailPreviewRequest,
)
from email_campaigns.emails.types import EmailPreview
from email_campaigns.fonts.services.google_fonts import GoogleFontsService


@singleton
class GetAutomatedEmailPreviewHandler(GetEmailPreviewHandler[AutomatedEmail]):
    # TODO: ---> Permission("automated_email", "view")
    permission = Permission("email_campaign", "view")

    def __init__(
        self,
        auth_service: AuthService,
        email_repository: Repository[AutomatedEmail],
        sendgrid_client: SendGridClient,
        legal_info_service: LegalInfoService,
        translation_service: TranslationService,
        ows_account_client: OwsAccountClient,
        ows_users_client: OwsUsersClient,
        fonts_service: GoogleFontsService,
        stripo_v2_client: AutomatedStripoClientV2,
        features: Features,
    ) -> None:
        super().__init__(
            auth_service=auth_service,
            email_repository=email_repository,
            sendgrid_client=sendgrid_client,
            legal_info_service=legal_info_service,
            translation_service=translation_service,
            ows_account_client=ows_account_client,
            ows_users_client=ows_users_client,
            fonts_service=fonts_service,
        )
        self.stripo_v2_client = stripo_v2_client
        self.features = features

    def handle(self, request: GetEmailPreviewRequest) -> EmailPreview:
        if not request.with_unapplied_changes or not self.features.is_on_for_identity(
            AUDIENCE_ENABLE_STRIPO_PLUGIN_V2,
            identity_id=request.identity_id,
        ):
            return super().handle(request)

        email = self.email_repository.get(request.email_id)
        if email is None:
            raise EmailNotFoundError

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

        response = self.stripo_v2_client.get_html_css(
            email_id=email.id,
            user_id=request.identity_id,
        )

        preview = replace(email.preview, html=response.html, css=response.css)

        return self.apply_substitutions(preview, email=email, request=request)