qrm2/main.py

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#!/usr/bin/env python3
"""
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qrm, a bot for Discord
---
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Copyright (C) 2019 Abigail Gold, 0x5c
This file is part of discord-qrm2 and is released under the terms of the GNU
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General Public License, version 2.
"""
import discord
from discord.ext import commands, tasks
import common as cmn
import info
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import data.options as opt
import data.keys as keys
# --- Settings ---
exit_code = 1 # The default exit code. ?shutdown and ?restart will change it accordingly (fail-safe)
ext_dir = "exts" # The name of the directory where extensions are located.
debug_mode = opt.debug # Separate assignement in-case we define an override (ternary operator goes here)
# --- Bot setup ---
bot = commands.Bot(command_prefix=opt.prefix,
description=info.description,
help_command=commands.MinimalHelpCommand())
# --- Commands ---
@bot.command(name="restart", hidden=True)
@commands.check(cmn.check_if_owner)
async def _restart_bot(ctx: commands.Context):
"""Restarts the bot."""
global exit_code
await cmn.add_react(ctx.message, cmn.emojis.good)
print(f"[**] Restarting! Requested by {ctx.author}.")
exit_code = 42 # Signals to the wrapper script that the bot needs to be restarted.
await bot.logout()
@bot.command(name="shutdown", hidden=True)
@commands.check(cmn.check_if_owner)
async def _shutdown_bot(ctx: commands.Context):
"""Shuts down the bot."""
global exit_code
await cmn.add_react(ctx.message, cmn.emojis.good)
print(f"[**] Shutting down! Requested by {ctx.author}.")
exit_code = 0 # Signals to the wrapper script that the bot should not be restarted.
await bot.logout()
@bot.group(name="extctl", hidden=True)
@commands.check(cmn.check_if_owner)
async def _extctl(ctx: commands.Context):
"""Extension control commands.
Defaults to `list` if no subcommand specified"""
if ctx.invoked_subcommand is None:
cmd = bot.get_command("extctl list")
await ctx.invoke(cmd)
@_extctl.command(name="list")
async def _extctl_list(ctx: commands.Context):
"""Lists Extensions."""
embed = cmn.embed_factory(ctx)
embed.title = "Loaded Extensions"
embed.description = "\n".join(["" + x.split(".")[1] for x in bot.extensions.keys()])
await ctx.send(embed=embed)
@_extctl.command(name="load")
async def _extctl_load(ctx: commands.Context, extension: str):
try:
bot.load_extension(ext_dir + "." + extension)
await cmn.add_react(ctx.message, cmn.emojis.good)
except commands.ExtensionError as ex:
embed = cmn.error_embed_factory(ctx, ex, debug_mode)
await ctx.send(embed=embed)
@_extctl.command(name="reload")
async def _extctl_reload(ctx: commands.Context, extension: str):
try:
bot.reload_extension(ext_dir + "." + extension)
await cmn.add_react(ctx.message, cmn.emojis.good)
except commands.ExtensionError as ex:
embed = cmn.error_embed_factory(ctx, ex, debug_mode)
await ctx.send(embed=embed)
@_extctl.command(name="unload")
async def _extctl_unload(ctx: commands.Context, extension: str):
try:
bot.unload_extension(ext_dir + "." + extension)
await cmn.add_react(ctx.message, cmn.emojis.good)
except commands.ExtensionError as ex:
embed = cmn.error_embed_factory(ctx, ex, debug_mode)
await ctx.send(embed=embed)
# --- Events ---
@bot.event
async def on_ready():
print(f"Logged in as: {bot.user} - {bot.user.id}")
print("------")
@bot.event
async def on_message(message):
msg = message.content.lower()
for emoji, keywords in opt.msg_reacts.items():
if any([keyword in msg for keyword in keywords]):
await message.add_reaction(discord.utils.find(lambda x: x.id == emoji, bot.emojis))
await bot.process_commands(message)
# --- Tasks ---
@tasks.loop(minutes=5)
async def _ensure_activity():
await bot.change_presence(activity=discord.Game(name=opt.game))
@_ensure_activity.before_loop
async def _before_ensure_activity():
await bot.wait_until_ready()
# --- Run ---
for ext in opt.exts:
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bot.load_extension(ext_dir + '.' + ext)
_ensure_activity.start()
try:
bot.run(keys.discord_token)
except discord.LoginFailure as ex:
# Miscellaneous authentications errors: borked token and co
if debug_mode:
raise
raise SystemExit("Error: Failed to authenticate: {}".format(ex))
except discord.ConnectionClosed as ex:
# When the connection to the gateway (websocket) is closed
if debug_mode:
raise
raise SystemExit("Error: Discord gateway connection closed: [Code {}] {}".format(ex.code, ex.reason))
except ConnectionResetError as ex:
# More generic connection reset error
if debug_mode:
raise
raise SystemExit("ConnectionResetError: {}".format(ex))
# --- Exit ---
# Codes for the wrapper shell script:
# 0 - Clean exit, don't restart
# 1 - Error exit, [restarting is up to the shell script]
# 42 - Clean exit, do restart
raise SystemExit(exit_code)