improve sharedFeed performance

src/stores/sharedFeed.js

@@ -262,12 +262,13 @@ export const useSharedFeedStore = defineStore('SharedFeed', () => {
         } else {
             return;
         }
-        const bias = new Date(Date.now() - 86400000).toJSON(); // 24 hours
+        const bias = new Date(Date.now() - 1000 * 60 * 60 * 12).toJSON(); // 12 hours
         const wristArr = [];
         let w = 0;
         const wristFilter = notificationsSettingsStore.sharedFeedFilters.wrist;
         let currentUserLeaveTime = 0;
         let locationJoinTime = 0;
+        let earliestKeptTime = 0;
         for (i = sessionTable.length - 1; i > -1; i--) {
             const ctx = sessionTable[i];
             if (ctx.created_at < bias) {
@@ -276,21 +277,30 @@ export const useSharedFeedStore = defineStore('SharedFeed', () => {
             if (ctx.type === 'Notification') {
                 continue;
             }
+            let ctxTime = 0;
+            if (w >= 50 && earliestKeptTime > 0) {
+                ctxTime = Date.parse(ctx.created_at);
+                if (ctxTime < earliestKeptTime - 20 * 1000) {
+                    break;
+                }
+            }
             // on Location change remove OnPlayerLeft
             if (ctx.type === 'LocationDestination') {
-                currentUserLeaveTime = Date.parse(ctx.created_at);
+                if (!ctxTime) {
+                    ctxTime = Date.parse(ctx.created_at);
+                }
+                currentUserLeaveTime = ctxTime;
                 const currentUserLeaveTimeOffset =
                     currentUserLeaveTime + 5 * 1000;
                 for (var k = w - 1; k > -1; k--) {
                     var feedItem = wristArr[k];
+                    const feedItemTime = Date.parse(feedItem.created_at);
                     if (
                         (feedItem.type === 'OnPlayerLeft' ||
                             feedItem.type === 'BlockedOnPlayerLeft' ||
                             feedItem.type === 'MutedOnPlayerLeft') &&
-                        Date.parse(feedItem.created_at) >=
+                        feedItemTime >= currentUserLeaveTime &&
-                            currentUserLeaveTime &&
+                        feedItemTime <= currentUserLeaveTimeOffset
-                        Date.parse(feedItem.created_at) <=
-                            currentUserLeaveTimeOffset
                     ) {
                         wristArr.splice(k, 1);
                         w--;
@@ -299,17 +309,20 @@ export const useSharedFeedStore = defineStore('SharedFeed', () => {
             }
             // on Location change remove OnPlayerJoined
             if (ctx.type === 'Location') {
-                locationJoinTime = Date.parse(ctx.created_at);
+                if (!ctxTime) {
+                    ctxTime = Date.parse(ctx.created_at);
+                }
+                locationJoinTime = ctxTime;
                 const locationJoinTimeOffset = locationJoinTime + 20 * 1000;
                 for (let k = w - 1; k > -1; k--) {
                     let feedItem = wristArr[k];
+                    const feedItemTime = Date.parse(feedItem.created_at);
                     if (
                         (feedItem.type === 'OnPlayerJoined' ||
                             feedItem.type === 'BlockedOnPlayerJoined' ||
                             feedItem.type === 'MutedOnPlayerJoined') &&
-                        Date.parse(feedItem.created_at) >= locationJoinTime &&
+                        feedItemTime >= locationJoinTime &&
-                        Date.parse(feedItem.created_at) <=
+                        feedItemTime <= locationJoinTimeOffset
-                            locationJoinTimeOffset
                     ) {
                         wristArr.splice(k, 1);
                         w--;
@@ -351,6 +364,14 @@ export const useSharedFeedStore = defineStore('SharedFeed', () => {
             }
             // BlockedOnPlayerJoined, BlockedOnPlayerLeft, MutedOnPlayerJoined, MutedOnPlayerLeft
             if (ctx.type === 'OnPlayerJoined' || ctx.type === 'OnPlayerLeft') {
+                if (
+                    ctx.userId &&
+                    !moderationStore.cachedPlayerModerationsUserIds.has(
+                        ctx.userId
+                    )
+                ) {
+                    // no moderation for this userId, skip
+                } else {
                     for (var ref of moderationStore.cachedPlayerModerations.values()) {
                         if (
                             ref.targetDisplayName !== ctx.displayName &&
@@ -383,10 +404,18 @@ export const useSharedFeedStore = defineStore('SharedFeed', () => {
                                 (wristFilter[type] === 'VIP' && isFavorite))
                         ) {
                             wristArr.unshift(entry);
+                            const entryTime = Date.parse(entry.created_at);
+                            if (
+                                !earliestKeptTime ||
+                                entryTime < earliestKeptTime
+                            ) {
+                                earliestKeptTime = entryTime;
+                            }
                         }
                         notificationStore.queueGameLogNoty(entry);
                     }
                 }
+            }
             // when too many user joins happen at once when switching instances
             // the "w" counter maxes out and wont add any more entries
             // until the onJoins are cleared by "Location"
@@ -406,8 +435,15 @@ export const useSharedFeedStore = defineStore('SharedFeed', () => {
                     isFavorite
                 });
                 ++w;
+                if (!ctxTime) {
+                    ctxTime = Date.parse(ctx.created_at);
+                }
+                if (!earliestKeptTime || ctxTime < earliestKeptTime) {
+                    earliestKeptTime = ctxTime;
                 }
             }
+        }
+        wristArr.splice(50);
         sharedFeed.value.gameLog.wrist = wristArr;
         sharedFeed.value.pendingUpdate = true;
     }