import logging
from dataclasses import dataclass
from re import IGNORECASE, Match, compile
from typing import List, Union

from bson import ObjectId, Regex

from modules.database import col_challenges

logger = logging.getLogger(__name__)


@dataclass
class PycordChallenge:
    """Dataclass of DB entry of a captcha challenge"""

    __slots__ = (
        "_id",
        "guild",
        "enabled",
        "archived",
        "challenge",
        "answers",
    )

    _id: ObjectId
    guild: ObjectId
    enabled: bool
    archived: bool
    challenge: str
    answers: List[Regex]

    @classmethod
    async def create(
        cls,
        guild: ObjectId,
        challenge: str,
        answers: List[Regex],
        enabled: bool = True,
        archived: bool = False,
    ):
        """Create new challenge entry in a database.

        ### Args:
            * guild (`ObjectId`): Guild's ID
            * challenge (`str`): Challenge text
            * answers (`List[Regex]`): List of regex patterns that are answers to the challenge
            * enabled (`bool`, *optional*): Whether the challenge is enabled. Defaults to `True`.
            * archived (`bool`, *optional*): Whether the challenge is archived. Defaults to `False`.

        ### Returns:
            * `PycordChallenge`: The challenge object
        """
        challenge_entry = {
            "guild": guild,
            "enabled": enabled,
            "archived": archived,
            "challenge": challenge,
            "answers": answers,
        }

        inserted = await col_challenges.insert_one(challenge_entry)

        challenge_entry["_id"] = inserted.inserted_id

        return cls(**challenge_entry)

    def solve(self, expression: str) -> bool:
        """Check if the expression is an answer to the challenge

        ### Args:
            * expression (`str`): Some expression to be matched against the challenge's answers.

        ### Returns:
            * `bool`: `True` if the answer is correct and `False` if not.
        """
        return bool(self.match(expression))

    def match(self, expression: str) -> Union[Match, None]:
        """Match the expression against challenge's answers

        ### Args:
            * expression (`str`): Some expression to be matched against the challenge's answers.

        ### Returns:
            * `Union[Match, None]`: Regex `Match` if a match is found, otherwise `None`.
        """
        for answer in self.answers:
            if re_match := compile(answer.pattern, IGNORECASE).match(
                expression.strip()
            ):
                return re_match

        return None

    async def enable(self, unarchive: bool = True) -> None:
        """Enable and unarchive the challenge

        ### Args:
            * unarchive (`bool`, *optional*): Whether to unarchive the challenge as well. Defaults to `True`.
        """
        self.enabled = True
        self.archived = unarchive if self.archived else False

        await col_challenges.update_one(
            {"_id": self._id},
            {
                "$set": {
                    "enabled": True,
                    "archived": unarchive if self.archived else False,
                }
            },
        )

    async def disable(self) -> None:
        """Disable the challenge"""
        self.enabled = False

        await col_challenges.update_one({"_id": self._id}, {"$set": {"enabled": False}})

    async def archive(self, disable: bool = True) -> None:
        """Archive and disable the challenge

        ### Args:
            * disable (`bool`, *optional*): Whether to disable the challenge as well. Defaults to `True`.
        """
        self.enabled = not disable if self.enabled else False
        self.archived = True

        await col_challenges.update_one(
            {"_id": self._id},
            {
                "$set": {
                    "enabled": not disable if self.enabled else False,
                    "archived": True,
                }
            },
        )

    async def unarchive(self) -> None:
        """Unarchive the challenge"""
        self.archived = False

        await col_challenges.update_one(
            {"_id": self._id}, {"$set": {"archived": False}}
        )