events.py

import discord
from config import bot
from utils import add_channel_roles, remove_channel_roles
from discord.ext.commands import is_owner

@bot.event
async def on_ready():
    print("Bot is ready")
    # set the bot status to "Ping @voice_vhannel_name"
    await bot.change_presence(
        activity=discord.Activity(
            type=discord.ActivityType.listening, name="@voice_channel_name"
        )
    )


@bot.event
# when someone joins a voice channel
async def on_voice_state_update(member, before, after):
    """Different cases:
    1. Member joins a voice channel:
        - Add the channel roles to the member
    2. Member leaves a voice channel:
        - Remove the channel roles from the member
    3. Member switches voice channels:
        - Remove the channel roles from the member for the old channel
        - Add the channel roles to the member for the new channel
    4. Member mutes/, or any change that dosen't change the voice channel id
        - Do nothing
    """
    if before.channel is None:
        # Case 1
        await add_channel_roles(after.channel, member)
    elif after.channel is None:
        # Case 2
        await remove_channel_roles(before.channel, member)
    elif before.channel.id != after.channel.id:
        # Case 3
        await remove_channel_roles(before.channel, member)
        await add_channel_roles(after.channel, member)
    else:
        # Case 4
        pass

@bot.command()
@is_owner()
async def shutdown(ctx):
    await ctx.respond("Shutting down...", ephemeral=True)
    await bot.change_presence(status=discord.Status.invisible)

@bot.command()
@is_owner()
async def shutup(ctx):
    await ctx.respond("Shutting up...", ephemeral=True)
    await bot.change_presence(status=discord.Status.online)