from configparser import ConfigParser
import logging

import discord
from discord.ext import commands

TOKEN = 'MTE1NDc0ODQ3MzE4MzMwNTc4OQ.Gz_Q7u.02sb2YNV_QQy7Bs19roXlB62mjoMKA6y8aubHU' # Bot token (replace with your own)
DEFAULT_CONFIG_FILE = 'config.ini' # Configuration file with server IDs and study group roles
DEFAULT_LOG_FILE = 'kruhobot.log' # Log file for the bot


# Create an instance of the bot
intents = discord.Intents.default()
intents.members = True
intents.message_content = True

bot = commands.Bot(command_prefix='!', intents=intents)

logging.basicConfig(filename=DEFAULT_LOG_FILE, level=logging.INFO)
logger = logging.getLogger("Kruhobot")


async def reply_error(ctx: commands.Context, message: str):
    await reply(ctx, f'**Error:** {message}', True)


async def reply(ctx: commands.Context, message: str):
    await ctx.send(message)


def init(config):
    """
    Initialize the server IDs and study groups from the configuration file.
    :param config: The configuration file.
    :return: A tuple with server IDs and study groups.
    """
    def get_section_server_id(section):
        return int(config[section]["server_ID"])

    server_ids = {get_section_server_id(section) for section in config.sections() if "server_ID" in config[section]}
    study_groups = {server_id: dict() for server_id in server_ids}

    for section in config.sections():
        server_id = get_section_server_id(section)
        if server_id is None:
            continue

        # Study group names are in style "kruh-XX", where XX is a two-digit number
        # Iterate over all from top to bottom
        for (key, value) in config.items(section):
            if key.startswith('kruh-'):
                study_groups[server_id][key] = int(value)

    return server_ids, study_groups


@bot.event
async def on_ready():
    logger.info(f'Logged in as {bot.user.name}')


@bot.command()
async def grant_role(ctx, study_group_name: str):
    author_id = ctx.author.id

    for guild_id in server_ids:
        guild = bot.get_guild(guild_id)

        if guild is None:
            continue

        author = guild.get_member(author_id)

        if author is None:
            continue

        if study_group_name in study_groups[guild_id]:
            role_name = study_groups[guild_id][study_group_name]
            role = discord.utils.get(guild.roles, id=role_name)

            if role is not None:
                await author.add_roles(role)
                await reply(ctx, f'{author.mention} has been granted the {study_group_name} role on the [{guild.name}] server.')
                logger.info(f'Granted role [{role_name}] to [{author_id}] in [{guild_id}] corresponding to the study group [{study_group_name}].')
                return

    await reply_error(ctx, 'Something went wrong. Please check your command and try again.')
    logger.error(f'Failed to grant a role to [{author_id}] in [{guild_id}] corresponding to the study group [{study_group_name}].')
    return


@bot.event
async def on_message(message):
    # Check if the message is a private message and not from the bot itself
    if isinstance(message.channel, discord.DMChannel) and message.author != bot.user:
        # Split the message content into words
        words = message.content.split()

        # Check if the message starts with the bot's command prefix and has enough arguments
        if len(words) >= 3 and words[0] == '!grant_role':
            # Process the command
            await bot.process_commands(message)


config = ConfigParser()
config.read(DEFAULT_CONFIG_FILE)

server_ids, study_groups = init(config)

# Run the bot
bot.run(TOKEN)