import logging

from discord import ApplicationContext, Cog, option
from discord.ext import commands

from classes.enums import MemberStatus
from classes.errors import (
    CheckChallengeNotFoundError,
    CheckNotFoundError,
    GuildNotFoundError,
    MemberNotFoundError,
)
from classes.pycord_bot import PycordBot

logger = logging.getLogger(__name__)


class CogVerifySetup(Cog):
    def __init__(self, client: PycordBot) -> None:
        super().__init__()
        self.client = client

    @commands.slash_command(
        name="verify", description="Submit verification check answer"
    )
    @option("answer", description="Answer to the challenge")
    async def command_verify(self, ctx: ApplicationContext, answer: str):
        # Verify that this command has been called in a guild
        if ctx.guild is None:
            await ctx.respond(
                "This command can only be used in a guild.", ephemeral=True
            )
            return

        # Verify that the guild exists and is configured
        try:
            pycord_guild = await self.client.find_guild(ctx.guild.id)
            if not pycord_guild.is_valid():
                raise GuildNotFoundError(pycord_guild.id)
        except GuildNotFoundError:
            await ctx.respond(
                "This guild has not been set up for checks.", ephemeral=True
            )
            return

        # Verify that the member is already known
        try:
            pycord_member = await self.client.find_member(ctx.user.id, pycord_guild._id)
        except MemberNotFoundError:
            await ctx.respond("There's no check on your record.", ephemeral=True)
            return

        # Verify that the member has an active check
        try:
            check = await pycord_member.get_check()
        except CheckNotFoundError:
            await ctx.respond("You do not have an active check.", ephemeral=True)
            return

        # Verify that the check has a valid challenge
        try:
            challenge = await check.get_challenge()
        except CheckChallengeNotFoundError:
            await ctx.respond(
                "Your check does not have a valid channel.", ephemeral=True
            )
            return

        # If the answer provided is incorrect
        if not challenge.solve(answer):
            logger.info(
                "Member %s of guild %s has failed a check %s (challenge %s) with answer '%s'",
                pycord_member.id,
                pycord_guild.id,
                check._id,
                challenge._id,
                answer,
            )

            # Update member's status
            await pycord_member.set_status(MemberStatus.ADDITIONAL)

            await ctx.respond("Your answer to the challenge is incorrect.")

            # Assign the member an additional verification role
            try:
                member = ctx.guild.get_member(ctx.user.id)
                additional_role = ctx.guild.get_role(pycord_guild.roles.additional)  # type: ignore
                await member.add_roles(additional_role)
            except Exception as exc:
                logger.error(
                    "Could not give role %s to %s of guild %s after passing the check due to %s",
                    pycord_guild.roles.verified,
                    pycord_member.id,
                    pycord_guild.id,
                    exc,
                )

            moderator_role = ctx.guild.get_role(pycord_guild.roles.moderator)  # type: ignore

            # Notify moderators (if the thread is available)
            if thread := ctx.guild.get_thread(check.thread_id):
                await thread.send(f"{moderator_role.mention} ACTION REQUIRED")

            return

        logger.info(
            "Member %s of guild %s has passed a check %s (challenge %s) with answer '%s'",
            pycord_member.id,
            pycord_guild.id,
            check._id,
            challenge._id,
            answer,
        )

        # Deactivate the check and update member's status
        await check.deactivate()
        await pycord_member.set_status(MemberStatus.VERIFIED)

        await ctx.respond("You have passed the challenge!")

        # Assign the member a verified role
        try:
            member = ctx.guild.get_member(ctx.user.id)
            verified_role = ctx.guild.get_role(pycord_guild.roles.verified)  # type: ignore

            await member.add_roles(verified_role)
        except Exception as exc:
            logger.error(
                "Could not give role %s to %s of guild %s after passing the check due to %s",
                pycord_guild.roles.verified,
                pycord_member.id,
                pycord_guild.id,
                exc,
            )

        # Delete the thread (if possible)
        if thread := ctx.guild.get_thread(check.thread_id):
            try:
                await thread.delete()
            except Exception as exc:
                logger.error(
                    "Could not delete thread %s after the check of %s in guild %s due to %s",
                    thread.id,
                    pycord_member.id,
                    pycord_guild.id,
                    exc,
                )


def setup(client: PycordBot):
    client.add_cog(CogVerifySetup(client))