Get trending section indices from GrowthBook (#11319)

src/view/com/posts/PostFeed.tsx

@@ -211,10 +211,6 @@ export type PostFeedRef = {
 // const REFRESH_AFTER = STALE.HOURS.ONE
 const CHECK_LATEST_AFTER = STALE.SECONDS.THIRTY
 
-const TRENDING_TOPICS_INDEX = 5
-const TRENDING_VIDEO_INDEX = 30
-const SUGGESTED_FOR_YOU_INDEX = 15
-
 let PostFeed = ({
   feed,
   description,
@@ -280,6 +276,15 @@ let PostFeed = ({
   const {rightNavVisible} = useLayoutBreakpoints()
   const areVideoFeedsEnabled = IS_NATIVE
 
+  const trendingIndices = ax.features.getValue(
+    ax.features.TrendingDiscoverValues,
+    {
+      topics: 5,
+      accounts: 15,
+      videos: 30,
+    },
+  )
+
   const [hasPressedShowLessUris, setHasPressedShowLessUris] = useState(
     () => new Set<string>(),
   )
@@ -574,19 +579,19 @@ let PostFeed = ({
                         key: 'composerPrompt-' + sliceIndex,
                       })
                     }
-                  } else if (sliceIndex === TRENDING_TOPICS_INDEX) {
+                  } else if (sliceIndex === trendingIndices.topics) {
                     arr.push({
                       type: 'interstitialFeedTrendingTopics',
                       key: 'interstitialFeedTrendingTopics-' + sliceIndex,
                     })
-                  } else if (sliceIndex === TRENDING_VIDEO_INDEX) {
+                  } else if (sliceIndex === trendingIndices.videos) {
                     if (areVideoFeedsEnabled && !trendingVideoDisabled) {
                       arr.push({
                         type: 'interstitialTrendingVideos',
                         key: 'interstitial-' + sliceIndex + '-' + lastFetchedAt,
                       })
                     }
-                  } else if (sliceIndex === SUGGESTED_FOR_YOU_INDEX) {
+                  } else if (sliceIndex === trendingIndices.accounts) {
                     arr.push({
                       type: 'interstitialFollows',
                       key: 'interstitial-' + sliceIndex + '-' + lastFetchedAt,
@@ -739,6 +744,7 @@ let PostFeed = ({
     ageAssuranceBannerState,
     isCurrentFeedAtStartupSelected,
     blockedOrMutedAuthors,
+    trendingIndices,
   ])
 
   // events