Show replies in context of their threads (#4871)

* Don't reconstruct threads from separate posts

* Remove post-level dedupe for now

* Change repost dedupe condition to look just at length

* Delete unused isThread

* Delete another isThread field

It is now meaningless because there's nothing special about author threads.

* Narrow down slice item shape so it does not need reply

* Consolidate slice validation criteria in one place

* Show replies in context

* Make fallback marker work

* Remove misleading and now-unused property

It was called rootUri but it was actually the leaf URI. Regardless, it's not used anymore.

* Add by-thread dedupe to non-author feeds

* Add post-level dedupe

* Always count from the start

This is easier to think about.

* Only tuner state need to be untouched on dry run

* Account for threads in reply filtering

* Remove repost deduping

This is already being taken care of by item-level deduping. It's also now wrong and removing too much (since it wasn't filtering for reposts directly).

* Calculate rootUri correctly

* Apply Following settings to all lists

* Don't dedupe intentional reposts by thread

* Show reply parent when ambiguous

* Explicitly remove orphaned replies from following/lists

* Fix thread dedupe to work across pages

* Mark grandparent-blocked as orphaned

* Guard tuner state change by dryRun

* Remove dead code

* Don't dedupe feedgen threads

* Revert "Apply Following settings to all lists"

This reverts commit aff86be6d37b60cc5d0ac38f22c31a4808342cf4.

Let's not do this yet and have a bit more discussion. This is a chunky change already.

* Reason belongs to a slice, not item

* Logically feedContext belongs to the slice

* Update comment to reflect latest behavior

1 files changed, 6 insertions, 13 deletions

diff --git a/src/state/preferences/feed-tuners.tsx b/src/state/preferences/feed-tuners.tsx
index d816bde64..b6f14fae7 100644
--- a/src/state/preferences/feed-tuners.tsx
+++ b/src/state/preferences/feed-tuners.tsx
@@ -19,20 +19,15 @@ export function useFeedTuners(feedDesc: FeedDescriptor) {
       }
     }
     if (feedDesc.startsWith('feedgen')) {
-      return [
-        FeedTuner.dedupReposts,
-        FeedTuner.preferredLangOnly(langPrefs.contentLanguages),
-      ]
+      return [FeedTuner.preferredLangOnly(langPrefs.contentLanguages)]
     }
     if (feedDesc.startsWith('list')) {
-      const feedTuners = []
-
+      let feedTuners = []
       if (feedDesc.endsWith('|as_following')) {
         // Same as Following tuners below, copypaste for now.
+        feedTuners.push(FeedTuner.removeOrphans)
         if (preferences?.feedViewPrefs.hideReposts) {
           feedTuners.push(FeedTuner.removeReposts)
-        } else {
-          feedTuners.push(FeedTuner.dedupReposts)
         }
         if (preferences?.feedViewPrefs.hideReplies) {
           feedTuners.push(FeedTuner.removeReplies)
@@ -46,18 +41,15 @@ export function useFeedTuners(feedDesc: FeedDescriptor) {
         if (preferences?.feedViewPrefs.hideQuotePosts) {
           feedTuners.push(FeedTuner.removeQuotePosts)
         }
-      } else {
-        feedTuners.push(FeedTuner.dedupReposts)
+        feedTuners.push(FeedTuner.dedupThreads)
       }
       return feedTuners
     }
     if (feedDesc === 'following') {
-      const feedTuners = []
+      const feedTuners = [FeedTuner.removeOrphans]
 
       if (preferences?.feedViewPrefs.hideReposts) {
         feedTuners.push(FeedTuner.removeReposts)
-      } else {
-        feedTuners.push(FeedTuner.dedupReposts)
       }
       if (preferences?.feedViewPrefs.hideReplies) {
         feedTuners.push(FeedTuner.removeReplies)
@@ -71,6 +63,7 @@ export function useFeedTuners(feedDesc: FeedDescriptor) {
       if (preferences?.feedViewPrefs.hideQuotePosts) {
         feedTuners.push(FeedTuner.removeQuotePosts)
       }
+      feedTuners.push(FeedTuner.dedupThreads)
 
       return feedTuners
     }