Add feed tuner to remove muted threads (#8773)

src/lib/api/feed-manip.ts

@@ -41,6 +41,7 @@ export class FeedViewPostsSlice {
   isIncompleteThread: boolean
   isFallbackMarker: boolean
   isOrphan: boolean
+  isThreadMuted: boolean
   rootUri: string
   feedPostUri: string
 
@@ -50,6 +51,7 @@ export class FeedViewPostsSlice {
     this.isIncompleteThread = false
     this.isFallbackMarker = false
     this.isOrphan = false
+    this.isThreadMuted = post.viewer?.threadMuted ?? false
     this.feedPostUri = post.uri
     if (AppBskyFeedDefs.isPostView(reply?.root)) {
       this.rootUri = reply.root.uri
@@ -361,6 +363,20 @@ export class FeedTuner {
     return slices
   }
 
+  static removeMutedThreads(
+    tuner: FeedTuner,
+    slices: FeedViewPostsSlice[],
+    _dryRun: boolean,
+  ) {
+    for (let i = 0; i < slices.length; i++) {
+      if (slices[i].isThreadMuted) {
+        slices.splice(i, 1)
+        i--
+      }
+    }
+    return slices
+  }
+
   static dedupThreads(
     tuner: FeedTuner,
     slices: FeedViewPostsSlice[],