Creating the stop function

config.py

@@ -59,4 +59,6 @@ Ouvrir l'event a tous le monde:
 ```!open [message]```
 Faire un event privé et inviter les personnes individuellement:
 ```!private```
-"""
+"""
+
+STOP_MSG = """Pour confirmer la fermeture de l'event, cliquez sur ✅."""

helper.py

@@ -1,3 +1,7 @@
+import discord
+import config
+
+
 def auto_delete(f):
 	async def wrapper(*args, **kwargs):
 		ret = await f(*args, **kwargs)
@@ -6,3 +10,26 @@ def auto_delete(f):
 
 	return wrapper
 
+
+def event_command(f):
+	async def wrapper(*args, **kwargs):
+		channel: discord.TextChannel = kwargs["message"].channel
+		if not channel.name[:1].isdigit():
+			return None
+		return await f(*args, **kwargs, event=int(channel.name[:1]))
+
+	return wrapper
+
+
+def organizer_only(f):
+	async def wrapper(*args, **kwargs):
+		member: discord.Member = kwargs["member"]
+		channel: discord.TextChannel = kwargs["message"].channel
+		event: int = kwargs["event"]
+		if "administrator" in channel.permissions_for(member):
+			return await f(*args, **kwargs)
+		if any(x for x in member.roles if x.name == f"{config.ORGANIZER_PREFIX}{event}"):
+			return await f(*args, **kwargs)
+		return None
+
+	return wrapper

main.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+import asyncio
+
 import nemo
 import helper
 import config
@@ -77,5 +79,38 @@ async def edit_event_status(index: int, text: str, list_msg: discord.Message):
 	await list_msg.edit(content="\n".join(content))
 
 
+@nemo.command("!close")
+@nemo.command("!stop")
+@helper.event_command
+@helper.organizer_only
+@helper.auto_delete
+async def stop(*, 
+			   channel: discord.TextChannel, 
+			   member: discord.Member, 
+			   message: discord.Message, 
+			   guild: discord.Guild, 
+			   event: int,
+			   **_):
+	msg = await channel.send(config.STOP_MSG.replace("@User", f"<@{member.id}>"))
+	await msg.add_reaction("✅")
+	try:
+		await nemo.wait_for("reaction_add", timeout=60, check=lambda reaction, user: user == message.author)
+	except asyncio.TimeoutError:
+		await msg.delete()
+		return
+	await discord.utils.get(guild.roles, name=f"{config.ORGANIZER_PREFIX}{event}").delete()
+	await discord.utils.get(guild.roles, name=f"{config.PARTICIPANT_PREFIX}{event}").delete()
+	await channel.delete()
+	org_channel: discord.TextChannel = discord.utils.get(guild.channels, name=config.ORGANIZATION_NAME)
+	list_msg: discord.Message = [x async for x in org_channel.history() if config.LIST_KEY in x.content][0] 
+	if f"**{event + 1}:**" in list_msg.content:
+		await edit_event_status(event, config.EMPTY_SLOT, list_msg)
+	elif event == 1:
+		await list_msg.edit(content=config.EVENT_LIST)
+	else:
+		await list_msg.edit(content='\n'.join(list_msg.content.split('\n')[:-1]))
+	await list_msg.clear_reaction(number_emojis[event - 1])
+	
+
 if __name__ == "__main__":
 	nemo.run(config.TOKEN)

nemo.py

@@ -20,7 +20,7 @@ class Nemo(discord.Client):
 			return
 		print(f"{message.author.display_name} used the command: '{cmd[0]}'")
 		try:
-			await f(cmd[1::], message=message, guild=message.guild)
+			await f(cmd[1::], message=message, guild=message.guild, channel=message.channel)
 		except Exception:
 			await message.channel.send(f"Fatal error: {traceback.format_exc()}")
 			raise