Create cakedays function.

cogs/loops/daily_loop.py

@@ -54,6 +54,8 @@ class DailyLoop(commands.Cog, name="Daily Loop"):
             kandy: nextcord.User = await self.bot.fetch_user(239547993106284544)
             await kandy.send('Happy "Birthday"!')
 
+        await self.cakedays()
+
     @daily_loop.before_loop
     async def before_loop(self):
         """
@@ -104,3 +106,22 @@ class DailyLoop(commands.Cog, name="Daily Loop"):
         with Session(engine) as session:
             to_add = session.scalars(stmt)
             birthday_list.extend(to_add.all())
+
+    async def cakedays(self) -> None:
+        """
+        Loops through the guild's humans checking for joined_at dates that match today's date. Sends a message
+        saying happy cakeday.
+        """
+
+        today = datetime.today()
+        guild: nextcord.Guild = self.bot.get_guild(self.bot.config.params.guild_id)
+        announce_channel: nextcord.TextChannel = guild.get_channel(self.bot.config.params.announcement_category_id)
+
+        cakedays: list[nextcord.Member] = [
+            human for human in guild.humans if human.joined_at.month == today.month and human.joined_at.day == today.day
+        ]
+
+        for member in cakedays:
+            years = today.year - member.joined_at.year
+            msg = f"Happy Cake day! <@{member.id}> joined the discord {years} ago!"
+            await announce_channel.send(msg)