[Mod] Option to DM user with kick/ban reason. (#2990)

* FUCK

* FUCK

* FUCK

* Update kickban.py

* Update settings.py

* Update kickban.py

* Update kickban.py

* Add files via upload

* black

* Update kickban.py

* Update kickban.py

* Update redbot/cogs/mod/kickban.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update redbot/cogs/mod/kickban.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update settings.py

* Update kickban.py

* Update and rename 2990.enhance.rst.txt.txt to 2990.enhance.rst.txt

* Update settings.py

* Rename 2990.enhance.rst.txt to 2990.enhance.rst

* Update redbot/cogs/mod/kickban.py

Co-Authored-By: DevilXD <DevilXD@users.noreply.github.com>

* Update redbot/cogs/mod/kickban.py

Co-Authored-By: DevilXD <DevilXD@users.noreply.github.com>

* Update redbot/cogs/mod/settings.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update redbot/cogs/mod/settings.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update changelog.d/mod/2990.enhance.rst

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update redbot/cogs/mod/settings.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update redbot/cogs/mod/settings.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update redbot/cogs/mod/kickban.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update redbot/cogs/mod/kickban.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update kickban.py

* Update settings.py

* Update kickban.py

* Update kickban.py

* Update redbot/cogs/mod/kickban.py

Co-Authored-By: jack1142 <6032823+jack1142@users.noreply.github.com>

* Update kickban.py

* Update kickban.py

* Update mod.py

* Update settings.py

* Fix SyntaxError

* Don't pass "No reason was given." to modlog case

* Update settings.py

* Update 2990.enhance.rst

* black

Co-authored-by: jack1142 <6032823+jack1142@users.noreply.github.com>
Co-authored-by: DevilXD <DevilXD@users.noreply.github.com>

redbot/cogs/mod/kickban.py

@@ -7,7 +7,7 @@ from typing import cast, Optional, Union
 
 import discord
 from redbot.core import commands, i18n, checks, modlog
-from redbot.core.utils.chat_formatting import pagify, humanize_number
+from redbot.core.utils.chat_formatting import pagify, humanize_number, bold
 from redbot.core.utils.mod import is_allowed_by_hierarchy, get_audit_reason
 from .abc import MixinMeta
 from .converters import RawUserIds
@@ -82,6 +82,19 @@ class KickBanMixin(MixinMeta):
         elif not (0 <= days <= 7):
             return _("Invalid days. Must be between 0 and 7.")
 
+        toggle = await self.settings.guild(guild).dm_on_kickban()
+        if toggle:
+            with contextlib.suppress(discord.HTTPException):
+                em = discord.Embed(
+                    title=bold(_("You have been banned from {guild}.").format(guild=guild))
+                )
+                em.add_field(
+                    name=_("**Reason**"),
+                    value=reason if reason is not None else _("No reason was given."),
+                    inline=False,
+                )
+                await user.send(embed=em)
+
         audit_reason = get_audit_reason(author, reason)
 
         queue_entry = (guild.id, user.id)
@@ -186,6 +199,18 @@ class KickBanMixin(MixinMeta):
             await ctx.send(_("I cannot do that due to discord hierarchy rules"))
             return
         audit_reason = get_audit_reason(author, reason)
+        toggle = await self.settings.guild(guild).dm_on_kickban()
+        if toggle:
+            with contextlib.suppress(discord.HTTPException):
+                em = discord.Embed(
+                    title=bold(_("You have been kicked from {guild}.").format(guild=guild))
+                )
+                em.add_field(
+                    name=_("**Reason**"),
+                    value=reason if reason is not None else _("No reason was given."),
+                    inline=False,
+                )
+                await user.send(embed=em)
         try:
             await guild.kick(user, reason=audit_reason)
             log.info("{}({}) kicked {}({})".format(author.name, author.id, user.name, user.id))
@@ -225,10 +250,13 @@ class KickBanMixin(MixinMeta):
         """Ban a user from this server and optionally delete days of messages.
 
         If days is not a number, it's treated as the first word of the reason.
+
         Minimum 0 days, maximum 7. If not specified, defaultdays setting will be used instead."""
+        author = ctx.author
         guild = ctx.guild
         if days is None:
             days = await self.settings.guild(guild).default_days()
+
         result = await self.ban_user(
             user=user, ctx=ctx, days=days, reason=reason, create_modlog_case=True
         )