from dataclasses import dataclass
from typing import Any, override

from cross.service import OutputService
from database.connection import DatabasePool
from mastodon.info import InstanceInfo, MastodonService, validate_and_transform

ALLOWED_POSTING_VISIBILITY: list[str] = ["public", "unlisted", "private"]


@dataclass(kw_only=True)
class MastodonOutputOptions:
    token: str
    instance: str
    visibility: str = "public"

    @classmethod
    def from_dict(cls, data: dict[str, Any]) -> "MastodonOutputOptions":
        validate_and_transform(data)

        if "visibility" in data:
            if data["visibility"] not in ALLOWED_POSTING_VISIBILITY:
                raise ValueError(f"Invalid visibility option {data['visibility']}!")

        return MastodonOutputOptions(**data)


# TODO
class MastodonOutputService(MastodonService, OutputService):
    def __init__(self, db: DatabasePool, options: MastodonOutputOptions) -> None:
        super().__init__(options.instance, db)
        self.options: MastodonOutputOptions = options

        self.log.info("Verifying %s credentails...", self.url)
        responce = self.verify_credentials()
        self.user_id: str = responce["id"]

        self.log.info("Getting %s configuration...", self.url)
        responce = self.fetch_instance_info()
        self.instance_info: InstanceInfo = InstanceInfo.from_api(responce)

    @override
    def _get_token(self) -> str:
        return self.options.token