How to improve antispam function discord.py? - datetime

Question

I'm making a discord bot and I have antispam function build in, but I want to improve it. I don't want this function to react to certain roles, like admin or moderator (so I want this function NOT to react to certain roles, so admins can spam). Also I have spam channel where I don't want this function to work, how do I do that? And last, but not least: how do I delete the same (spammed) messages? Because what my bot does is: it says "Stop spamming". But I want to delete the same message. Thank you very much! I hope you can help me!
THE CODE:
import os
import discord
import datetime
intents = discord.Intents.all()
bot = commands.Bot(command_prefix='$', intents=intents)
time_window_milliseconds = 5000
max_msg_per_window = 5
author_msg_times = {}
#bot.event
async def on_message(ctx): #spam allowed in channel and for admins? How to make?
global author_msg_counts
author_id = ctx.author.id
curr_time = datetime.datetime.now().timestamp() * 1000
if not author_msg_times.get(author_id, False):
author_msg_times[author_id] = []
author_msg_times[author_id].append(curr_time)
expr_time = curr_time - time_window_milliseconds
expired_msgs = [
msg_time for msg_time in author_msg_times[author_id]
if msg_time < expr_time
]
for msg_time in expired_msgs:
author_msg_times[author_id].remove(msg_time)
if len(author_msg_times[author_id]) > max_msg_per_window:
await ctx.delete(ctx)
await ctx.send("Stop Spamming")
else:
print("You are good to go!")
bot.run(os.getenv('token'))

Answer 1

For your first question about roles, you should add at the start of your spam check:
if ctx.author.guild_permissions.manage_messages:
return
This will make it not affect any member who has the permission to delete messages (this would be moderators or admins).
You can also do
if ctx.channel.id == [id here]:
return
replacing [id here] with the id of your spam channel.
Lastly, put await ctx.send("Stop Spamming") before await ctx.delete(ctx), and make sure your bot has permission to delete messages.