#!/usr/bin/env python3

from discord.utils import setup_logging
import argparse
import discord
import logging
import re
import shutil
import subprocess as sp

discord.utils.setup_logging()
_log = logging.getLogger("statbot")

_GAMES = "games.txt"
_DB = "holy-heck2.db"
_DB_DEST = f"/var/lib/grafana/{_DB}"


def _write_game(content: str):
    try:
        with open(_GAMES, "a") as f:
            f.write(content)
            f.write("\n")
    except:
        _log.exception(f"failed writing game {content}")


def _update_db():
    try:
        games = []
        with open(_GAMES) as f:
            for line in f:
                games.append(line.strip())
        sp.run(["./index.py", "-o", _DB] + games)
        shutil.move(_DB, _DB_DEST)
    except:
        _log.exception(f"failed updating db")


class BotClient(discord.Client):
    async def on_ready(self):
        _log.info(f"ready as {self.user}")

    async def on_message(self, message: discord.Message):
        content = message.content
        if re.match("https://replay.pokemonshowdown.com/dl-.*", content):
            _log.info(f"Recognised {content} as a League game")
            _write_game(content)
            _update_db()


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument(
        "-t",
        "--token-file",
        metavar="FILE",
        default="token",
        help="file containing Discord API token",
    )

    args = parser.parse_args()

    intents = discord.Intents.default()
    intents.message_content = True
    client = BotClient(intents=intents)
    with open(args.token_file) as f:
        token = f.read().strip()
        client.run(token, log_handler=None)


if __name__ == "__main__":
    main()