bot.py

import os
import discord
import time
import logging
import json
from discord.ext import commands
from discord import Game, Embed, Color, Status, ChannelType
from random import randint, sample
from discord.ext.commands import cooldown
from os import path


#Logging
logger = logging.getLogger('discord')
logger.setLevel(logging.INFO)
handler = logging.FileHandler(filename='logs.log', encoding='utf-8', mode='w')
handler.setFormatter(logging.Formatter('%(asctime)s:%(levelname)s:%(name)s: %(message)s'))
logger.addHandler(handler)

if path.exists("config.json") == False:
    with open('config.json', 'w') as configout:
        json.dump({
        "token": "Token goes here",
        "prefix": "!",
        "owner": 350765965278969860,
        "danbooru_username": "",
        "danbooru_key": ""
         }, configout)
    print("[INFO] config.json generated!!")
    quit()
else:
    with open("config.json") as f:
        config = json.load(f)


# Creating bot instance
bot = commands.Bot(command_prefix=config.get('prefix'), self_bot=False, owner_id=config.get('owner'), case_insensitive=True, help_command=None)

#Loaading cogs

if __name__ == '__main__':
    for extension in os.listdir("cogs"):
        if extension == "__pycache__":
            pass
        else:
            bot.load_extension("cogs."+extension[:-3])

#listeners

@bot.event
async def on_ready():
    id = bot.user.id
    bot_user = bot.user.name
    print ("------------------------------------")
    print ("Bot Name: " + bot_user)
    print ("Bot ID: " + str(id))
    print ("discord.py version: " + discord.__version__)
    print ("------------------------------------")
    if path.isfile("presence.txt"):
        with open("presence.txt") as f:
            presence = f.readline()
            await bot.change_presence(activity=discord.Game(name=presence, type=1))
    else:
        with open("presence.txt", "w") as f:
            f.write("Prefix: "+str(config.get('prefix')))
        with open("presence.txt") as f:
            presence = f.readline()
            await bot.change_presence(activity=discord.Game(name=presence, type=1))


#Message on error event
@bot.event
async def on_command_error(ctx, error):
    if isinstance(error, commands.CommandOnCooldown):
        msg = '> [ERROR] This command is on a cooldown, please try again in {:.2f}s'.format(error.retry_after)
        user = ctx.message.author
        await user.send(msg)
    elif isinstance(error, commands.CheckFailure):
        msg = '> [ERROR] You do not have the required permission to use this command!.'
        user = ctx.message.author
        await user.send(msg)
    elif isinstance(error, commands.CommandNotFound):
        ...
    elif isinstance(error, commands.MissingRequiredArgument):
        msg = "> [ERROR] Missing required argument(s)!"
        user = ctx.message.author
        await ctx.send(msg)
    elif isinstance(error, ConnectionError):
        print("Fucker ConnectionError. bot")
    elif isinstance(error, commands.CommandInvokeError):
        await ctx.send("> [ERROR] "+str(error))
    else:
        raise error


# Authentication

if config.get('token') == "Token goes here":
    print("[ERROR] Change token in config!")
elif config.get('token') == "":
    print("[ERROR] No token present!")
else:
    print("[INFO] Starting up and logging in...")
    bot.run(config.get('token'), bot=True, reconnect=True)