from dataclasses import dataclass

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

from ows_text_campaigns.adapters.db.decorators import transactional
from ows_text_campaigns.artist.models import ArtistSettings
from ows_text_campaigns.artist.repositories import ArtistSettingsRepository
from ows_text_campaigns.artist.services import ArtistSettingsService
from ows_text_campaigns.artist.validators import ArtistSettingsValidator
from ows_text_campaigns.assets.exceptions import AssetNotFoundError
from ows_text_campaigns.assets.services import AssetService


@dataclass(kw_only=True)
class DeleteArtistImageRequest(AuthRequest):
    global_participant_id: str


@singleton
class DeleteArtistImageHandler:
    permission = Permission("text_campaign", "delete")

    def __init__(
        self,
        asset_service: AssetService,
        artist_settings_repository: ArtistSettingsRepository,
        artist_settings_service: ArtistSettingsService,
        artist_settings_validator: ArtistSettingsValidator,
    ) -> None:
        self.asset_service = asset_service
        self.artist_settings_repository = artist_settings_repository
        self.artist_settings_service = artist_settings_service
        self.artist_settings_validator = artist_settings_validator

    @transactional
    def handler(self, request: DeleteArtistImageRequest) -> ArtistSettings:
        self.artist_settings_validator.validate_roster_access(
            identity_id=request.identity_id,
            global_participant_id=request.global_participant_id,
            permission=self.permission,
        )

        artist_settings = self.artist_settings_service.get_settings(
            request.global_participant_id
        )
        if artist_settings.asset is None:
            raise AssetNotFoundError
        asset = artist_settings.asset
        self.asset_service.delete_asset(asset)
        # Reset the asset in artist settings
        artist_settings.asset = None
        artist_settings.asset_id = None
        self.artist_settings_repository.save(artist_settings)
        return artist_settings