import logging
import os
import re
from typing import Union

import discord
import pandas as pd
from discord import RawReactionActionEvent, RawReactionClearEmojiEvent
from dotenv import load_dotenv

import data
import jokes

logging.basicConfig(level=logging.INFO)

LIL_STINKY_ID = 704043422276780072

LOGGER = logging.getLogger(__name__)


class RoboPage(discord.Client):
    db_path: str = 'messages.db'

    def __init__(self, *args, **kwargs):
        super(RoboPage, self).__init__(*args, **kwargs)
        attrs = filter(lambda n: n.endswith('Joke') and n not in ['Joke', 'GifJoke'], dir(jokes))
        attrs = map(lambda n: getattr(jokes, n)(), attrs)
        self.jokes = list(attrs)
        self.most_regex = re.compile(
            "^who is the most\s+(?P<emoji>\S+)\s*?(?:in the past (?P<days>\d+) days)?\??$",
            re.IGNORECASE,
        )
        self.leaderboard_regex = re.compile(
            '^most\s*?(?P<emoji>\S+?)\s*?(leaderboard|((?:.+?(?P<days>\d+) days)))',
            re.IGNORECASE
        )

    async def handle_ready(self):
        async def alive():
            channel: discord.TextChannel = discord.utils.get(self.get_all_channels(), name='robotics-facility')
            await channel.send(f"I'm aliiiiiive {discord.utils.get(self.emojis, name='kaylon')}")

        self.data: data.MsgData = await data.MsgData.create(
            client=self,
            limit=5000,
            days=30,
            # limit=100,
            # days=14,
        )
        self.data.to_sql(self.db_path)
        LOGGER.info(f'{self.data.msgs.shape[0]} messages total')
        # await alive()

    async def handle_message(self, message):
        if message.author != self.user:
            if hasattr(self, 'data'):
                await self.data.add_msg(message)

                if (m := self.leaderboard_regex.match(message.content)) is not None:
                    try:
                        await message.reply(await self.leaderboard(match=m))
                    except KeyError as e:
                        LOGGER.exception(e)
                        await message.reply(f"I couldn't find any {m.group('emoji')} reactions. Leave me alone!")
                        return

                elif (m := self.most_regex.match(message.content)) is not None:
                    try:
                        await message.reply(await self.biggest_single(match=m))
                    except Exception as e:
                        LOGGER.exception(e)
                        await message.reply('NObody')
            else:
                LOGGER.warning(f'No self.data attribute')

            for joke in self.jokes:
                if (m := joke.scan(message)) is not None:
                    LOGGER.info(f'{joke.__class__.__name__} detected: {message.content}, {m.group()}')
                    await joke.respond(message, self, m)

    async def handle_raw_reaction(self, payload: Union[RawReactionActionEvent, RawReactionClearEmojiEvent]):
        LOGGER.info(payload)
        guild = await client.fetch_guild(payload.guild_id)
        channel = await guild.fetch_channel(payload.channel_id)
        message = await channel.fetch_message(payload.message_id)

        if payload.event_type == 'REACTION_REMOVE':
            LOGGER.info(f'{payload.emoji} removed from\n{message.author}: {message.content}')
        elif payload.event_type == 'REACTION_ADD':
            LOGGER.info(
                f'{payload.member.display_name} added {payload.emoji} to\n' + \
                f'{message.author.display_name}: {message.content}')

        if hasattr(self, 'data'):
            await self.data.update_reaction(msg=message)

    async def leaderboard(self, match: re.Match) -> str:
        emoji_name = get_emoji_name(match.group('emoji'))
        days = match.group('days') or 14
        days = int(days)
        counts = await self.data.emoji_user_counts(client=self,
                                                   emoji_name=emoji_name,
                                                   days=days)
        width = max([len(str(s)) for s in counts.index.values])
        res = f'{match.group("emoji")} totals, past {days} days\n'
        res += '\n'.join(f"`{str(name).ljust(width + 1)}with {cnt:<2.0f} total`"
                         for name, cnt in counts.iteritems())
        return res

    async def biggest_single(self, match: re.Match) -> str:
        days = match.group('days') or 14
        days = int(days)
        data: pd.Series = self.data.emoji_totals(
            emoji_name=get_emoji_name(match.group('emoji')),
            days=days
        )
        user: discord.User = await client.fetch_user(user_id=data.index[0])
        LOGGER.info(f'User: {user.mention}')
        msg = f'{user.mention} with {data.iloc[0]:.0f}x {match.group("emoji")} over the past {days} days'
        msg += '\n' + await self.worst_offsenses(user=user, days=days, top=3, emoji_str=match.group('emoji'))
        return msg

    async def worst_offsenses(self, user: discord.User, days: int, top: int, emoji_str: str) -> str:
        cdf = self.data.emoji_messages(get_emoji_name(emoji_str), days=days)
        cdf = cdf[cdf['user id'] == user.id].sort_values('count', ascending=False).iloc[:top]

        if cdf.shape[0] > 0:
            res = f'Top {top} {emoji_str}\n'
            res += f'\n'.join(
                f'{emoji_str}x{row["count"]:.0f}\n{row["link"]}' for idx, row in cdf.iterrows())
        else:
            res = f'No {emoji_str} for {user} in the past {days} days'

        return res


def get_emoji_name(string: str) -> str:
    if (m := re.search('<:(?P<name>\w+):(?P<id>\d+)>', string)):
        string = m.group('name')
    return string.lower().strip()


if __name__ == '__main__':
    client = RoboPage()


    @client.event
    async def on_ready():
        await client.handle_ready()


    @client.event
    async def on_message(message: discord.Message):
        await client.handle_message(message)


    @client.event
    async def on_raw_reaction_add(payload: RawReactionActionEvent):
        await client.handle_raw_reaction(payload)


    @client.event
    async def on_raw_reaction_remove(payload: RawReactionActionEvent):
        await client.handle_raw_reaction(payload)


    load_dotenv()
    client.run(os.getenv('DISCORD_TOKEN'))