From 8b2a554c911ba0ec1ec857fe16a3c96a0fac64be Mon Sep 17 00:00:00 2001
From: ITOH <to@itoh.at>
Date: Thu, 27 May 2021 16:38:34 +0200
Subject: [PATCH] add: message sweeper

---
 src/cache.ts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/cache.ts b/src/cache.ts
index 02f30ca09..b93bd7773 100644
--- a/src/cache.ts
+++ b/src/cache.ts
@@ -14,7 +14,7 @@ export const cache = {
   /** All of the channel objects the bot has access to, mapped by their Ids */
   channels: new Collection<bigint, DiscordenoChannel>(),
   /** All of the message objects the bot has cached since the bot acquired `READY` state, mapped by their Ids */
-  messages: new Collection<bigint, DiscordenoMessage>(),
+  messages: new Collection<bigint, DiscordenoMessage>([], { sweeper: { filter: messageSweeper, interval: 300000 } }),
   /** All of the member objects that have been cached since the bot acquired `READY` state, mapped by their Ids */
   members: new Collection<bigint, DiscordenoMember>(),
   /** All of the unavailable guilds, mapped by their Ids (id, timestamp) */
@@ -33,6 +33,16 @@ export const cache = {
   },
 };
 
+function messageSweeper(message: DiscordenoMessage) {
+  // DM messages aren't needed
+  if (!message.guildId) return true;
+
+  // Only delete messages older than 10 minutes
+  if (Date.now() - message.timestamp > 600000) return true;
+
+  return false;
+}
+
 export let cacheHandlers = {
   /** Deletes all items from the cache */
   async clear(table: TableName) {