This should theoretically work

data/schema.sql

@@ -33,4 +33,9 @@ CREATE TABLE IF NOT EXISTS guilds (
     levelling_message      TEXT    DEFAULT '**GG**, **{user}** has reached level **{level}**!',
     levelling_multiplier   FLOAT   DEFAULT 1.0,
     levelling_delete_after INT     DEFAULT NULL
-);
+);
+
+CREATE TABLE IF NOT EXISTS avatars (
+    user_id     BIGINT PRIMARY KEY,
+    avatar_url  TEXT NOT NULL
+)

extensions/events/__init__.py

@@ -1,8 +1,9 @@
 from .guild import GuildCog
 from .ping import PingCog
+from .avatars import AvatarsCog
 
 
-class Events(PingCog, GuildCog): # PingCog needs to be first, it adds attributes
+class Events(AvatarsCog, PingCog, GuildCog): # PingCog needs to be first, it adds attributes
     pass
 
 

extensions/events/avatars.py

@@ -0,0 +1,45 @@
+import contextlib
+import random
+
+import discord
+from discord.ext import commands, tasks
+
+from utils import Embed, Korii
+import logging
+
+
+class AvatarsCog(commands.Cog):
+    def __init__(self, bot: Korii):
+        self.bot = bot
+        self.update_avatars.start()
+        self.rustbyte_guild: discord.Guild
+        self.developers_role: discord.Role
+
+    def cog_unload(self):
+        self.update_avatars.cancel()
+
+    @tasks.loop(minutes=5)
+    async def update_avatars(self):
+        for member in self.rustbyte_guild.members:
+            if self.developers_role in member.roles:
+                assert member.avatar
+                await self.bot.pool.execute("INSERT INTO avatars(user_id, avatar_url) VALUES ($1, $2) ON CONFLICT(user_id) DO UPDATE SET avatar_url = $2",
+                                            member.id, member.avatar.replace(size=256, format="webp"))
+
+    @update_avatars.before_loop
+    async def wait_until_ready(self):
+        await self.bot.wait_until_ready()
+
+        guild = self.bot.get_guild(1096226282292920403)
+        if not isinstance(guild, discord.Guild):
+            logging.error("Cannot find Rustbyte guild")
+            return
+
+        self.rustbyte_guild = guild
+
+        role = guild.get_role(1096354583888003102)
+        if not isinstance(role, discord.Role):
+            logging.error("Cannot find Developers role in Rustbyte guild")
+            return
+
+        self.developers_role = role