From 9b0b35b8bbd88795cac1535d96da142919fdcc7a Mon Sep 17 00:00:00 2001
From: Viet Nguyen <3805254+vnugent@users.noreply.github.com>
Date: Fri, 14 Jul 2023 20:12:35 +0200
Subject: [PATCH] fix: use media object lastUpdated for sorting (#342)

---
 src/model/MediaDataSource.ts | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/model/MediaDataSource.ts b/src/model/MediaDataSource.ts
index 5e2c90a4..8e34c726 100644
--- a/src/model/MediaDataSource.ts
+++ b/src/model/MediaDataSource.ts
@@ -63,9 +63,17 @@ export default class MediaDataSource extends MongoDataSource<MediaObject> {
       ...toIncludeMediaWithTagsOrNotfilters,
       {
         /**
-         * Sort by most recently uploaded media first
+         * Sort by most recently tags media
          */
-        $sort: { createdAt: -1, _id: -1 }
+        $sort: { updatedAt: -1, _id: -1 }
+      },
+      {
+        /**
+         * Limit the most recent list.  While unlikely, it may be
+         * possible that most recent tags belong to one user.
+         * We want this number to be large (to pick up more users).
+         */
+        $limit: 100
       },
       {
         $group: {
@@ -75,6 +83,9 @@ export default class MediaDataSource extends MongoDataSource<MediaObject> {
           mediaWithTags: { $push: '$$ROOT' }
         }
       },
+      {
+        $sort: { 'mediaWithTags.0.updatedAt': -1 }
+      },
       {
         $limit: safeMaxUsers
       },