Better Slowmode command (#95)

* Update mod.py

* Handle optional slowmode parameter correctly

---------

Co-authored-by: TSR Berry <20988865+TSRBerry@users.noreply.github.com>

robocop_ng/cogs/mod.py

@@ -3,7 +3,7 @@ from typing import Optional
 
 import discord
 from discord.ext import commands
-from discord.ext.commands import Cog
+from discord.ext.commands import Cog, Context
 
 from robocop_ng.helpers.checks import check_if_staff, check_if_bot_manager
 from robocop_ng.helpers.restrictions import add_restriction, remove_restriction
@@ -914,11 +914,18 @@ class Mod(Cog):
     @commands.guild_only()
     @commands.check(check_if_staff)
     @commands.command(aliases=["slow"])
-    async def slowmode(self, ctx, seconds: int):
+    async def slowmode(
+        self, ctx: Context, seconds: int, channel: Optional[discord.TextChannel] = None
+    ):
+        if channel is None:
+            channel = ctx.channel
+
         if seconds > 21600 or seconds < 0:
             return await ctx.send("Seconds can't be above '21600' or less then '0'")
 
-        await ctx.channel.edit(slowmode_delay=seconds)
+        await channel.edit(
+            slowmode_delay=seconds, reason=f"{str(ctx.author)} set the slowmode"
+        )
         await ctx.send(f"Set the slowmode delay in this channel to {seconds} seconds!")