[Mod] Make tempbans permanent when using [p]hackban (#4025)

* Remove users from tempban unban list when hackbanning them

* black and missing bracket

* make sure this actually gets processed

* let the user know when a tempban was upgraded

* say more things

* reduce config calls

* jack loves performance

* adress review

* review the 2nd

redbot/cogs/mod/kickban.py

@@ -7,7 +7,7 @@ from typing import Optional, Union
 import discord
 from redbot.core import commands, i18n, checks, modlog
 from redbot.core.utils import AsyncIter
-from redbot.core.utils.chat_formatting import pagify, humanize_number, bold
+from redbot.core.utils.chat_formatting import pagify, humanize_number, bold, humanize_list
 from redbot.core.utils.mod import is_allowed_by_hierarchy, get_audit_reason
 from .abc import MixinMeta
 from .converters import RawUserIds
@@ -292,6 +292,7 @@ class KickBanMixin(MixinMeta):
         using this command"""
         banned = []
         errors = {}
+        upgrades = []
 
         async def show_results():
             text = _("Banned {num} users from the server.").format(
@@ -300,6 +301,11 @@ class KickBanMixin(MixinMeta):
             if errors:
                 text += _("\nErrors:\n")
                 text += "\n".join(errors.values())
+            if upgrades:
+                text += _(
+                    "\nFollowing user IDs have been upgraded from a temporary to a permanent ban:\n"
+                )
+                text += humanize_list(upgrades)
 
             for p in pagify(text):
                 await ctx.send(p)
@@ -326,10 +332,16 @@ class KickBanMixin(MixinMeta):
         if not guild.me.guild_permissions.ban_members:
             return await ctx.send(_("I lack the permissions to do this."))
 
+        tempbans = await self.config.guild(guild).current_tempbans()
+
         ban_list = await guild.bans()
         for entry in ban_list:
             for user_id in user_ids:
                 if entry.user.id == user_id:
+                    if user_id in tempbans:
+                        # We need to check if a user is tempbanned here because otherwise they won't be processed later on.
+                        continue
+                    else:
                         errors[user_id] = _("User {user_id} is already banned.").format(
                             user_id=user_id
                         )
@@ -343,6 +355,10 @@ class KickBanMixin(MixinMeta):
         for user_id in user_ids:
             user = guild.get_member(user_id)
             if user is not None:
+                if user_id in tempbans:
+                    # We need to check if a user is tempbanned here because otherwise they won't be processed later on.
+                    continue
+                else:
                     # Instead of replicating all that handling... gets attr from decorator
                     try:
                         result = await self.ban_user(
@@ -369,17 +385,30 @@ class KickBanMixin(MixinMeta):
             user = discord.Object(id=user_id)
             audit_reason = get_audit_reason(author, reason)
             queue_entry = (guild.id, user_id)
+            async with self.config.guild(guild).current_tempbans() as tempbans:
+                if user_id in tempbans:
+                    tempbans.remove(user_id)
+                    upgrades.append(str(user_id))
+                    log.info(
+                        "{}({}) upgraded the tempban for {} to a permaban.".format(
+                            author.name, author.id, user_id
+                        )
+                    )
+                    banned.append(user_id)
+                else:
                     try:
                         await guild.ban(user, reason=audit_reason, delete_message_days=days)
                         log.info("{}({}) hackbanned {}".format(author.name, author.id, user_id))
                     except discord.NotFound:
-                errors[user_id] = _("User {user_id} does not exist.").format(user_id=user_id)
+                        errors[user_id] = _("User {user_id} does not exist.").format(
-                continue
-            except discord.Forbidden:
-                errors[user_id] = _("Could not ban {user_id}: missing permissions.").format(
                             user_id=user_id
                         )
                         continue
+                    except discord.Forbidden:
+                        errors[user_id] = _(
+                            "Could not ban {user_id}: missing permissions."
+                        ).format(user_id=user_id)
+                        continue
                     else:
                         banned.append(user_id)