soxa 6b440cfdf3
Live updates to comment threads (#2115)
* check new comments every 10 seconds

* enhance: clear newComments on child comments when we show a topLevel new comment; cleanup: resolvers, logs

* handle comments of comments, new structure to clear newComments on childs

* use original recursive comments data structure

* correct comment structure after deduplication

* faster newComments query deduplication, don't need to know how many comments are there

* cleanup: comments on newComments fetches and dedupes

* cleanup, use correct function declarations

* stop polling after 30 minutes, pause polling if user is not on the page

* ActionTooltip indicating that the user is in a live comment section

* handleVisibilityChange to control polling by visibility

* paused polling styling, check activity on 1 minute intervals and visibility change, light cleanup

* user can resume polling without refreshing the page

* better naming, straightforward dedupeComment on newComment arrival

* cleanup: better naming, get latest comment creation, correct order of comment injection

* cleanup: refactor live comments related functions to use-live-comments.js

* refactor: clearer naming, optimized polling and date retrieval logic, use of constants, general cleanup

* ui: place ShowNewComments in the bottom-right corner of nested comments

* fix: make updateQuery sort-aware to correctly inject the comment in the correct Item query

* cleanup: better naming; fix: usecallback on live comments component; fix leak on useEffect because of missing sort
atomic apollo cache manipulations; manage top sort not being present in item query cache
queue nested comments without a parent, retry on the next poll
fix commit messages

* fix: don't show unpaid comments; cleanup: compact cache merge/dedupe, queue comments via state

* fix: read new comments fragments to inject fresh new comments, fixing dropped comments;

ui: show amount of new comments

refactor: correct function positioning;

cleanup: useless logs

* enhance: queuedComments Ref, cache-and-network fetch policy; freshNewComments readFragment fallback to received comment

* cleanup: detailed comments and better ShowNewComment text

* fix: while showing new comments, also update ncomments for UI and pagination

* refactor: ShowNewComments is its own component; cleanup: proven useless dedupe on ShowNewComments, count nested ncomments from fresh new comments

* enhance: direct latest comment createdAt calc with reduce

* cleanup queue on unmount

* feat: live comments indicator for bottomed-out replies, ncomments updates; fix: nested comment structures

- new comments indicator for bottomed-out replies
- ncomments sync for parent and its ancestors
- limited comments fragment for comments that don't have CommentsRecursive
- reduce cache complexity by removing useless roundtrips

ux: live comments indicator on bottomedOut replies

fix: dedupe newComments before displaying ShowNewComments to avoid false positives

enhance: store ids of new comments in the cache, instead of carrying full comments that would get discarded anyway

hotfix: newComments deduplication ID mismatch, filter null comments from freshNewComments

fix: ncomments not updating for all comment levels; refactor: share Reply update ancestors' ncomments function with ShowNewComments

cleanup: better naming to indicate the total number of comments including nested comments

fix: increment parent comment ncomments

cleanup: Items that will have comments will always have a structure where item.comments is true

cleanup: reduce code complexity checking the nested comment update result instead of preventively reading the fragment

cleanup: avoid double-updating ncomments on parent

fix: don't use CommentsRecursive for bottomed-out comments

cleanup: better fragment naming; add TODO for absolute bottom comments

* backport live comments logic enhancements

use-live-comments:
- remove useless dedupe against already present comments
- check newComments.comments length to tell if there are new comments
- code reordering

show-new-comments:
- show all new comments recursively for nested comments
- get always the newest comments to inject also their own child new comments
- update local storage commentsViewedAt on comment injection
- respect depth on comment injection

comments.js
- apollo cache manipulations now live here

* hotfix: handle undefined item.comments.comments on dedupe

* hotfix: limited fragment for recursive comment collection; protect from null fragments; add missing deps to memoization

* docs: clarify ncomments updates

* cleanup: remove unused export

* count and show only the direct new comments and recursively their children

enhance: dedupe against existing comments only in the component
enhance: recursive count/injection share the same logic

* fix regression on top level counting

* hotfix: introduce readNestedCommentsFragment in lib/comments.js

* fix: count also existing comments of a new comment; cleanup: use readCommentFragment also for prepareComments; reduce freshNewComments usage

* add support for comments at the deepest level

fixes:
- client-side navigation re-fetched all new comments because 'after' was cached, now the latest new comment time persists in sessionStorage

enhancements:
- use CommentWithNewMinimal fragment fallback for comments at the deepest level
- tweak ReplyOnAnotherPage to show also how many direct new comments are there

cleanup:
- queue management is not needed anymore, therefore it has been removed

* cleanup: remove logs

* revert counting on ReplyOnAnotherPage, TODO for enhancements PR

* move ShowNewComments to CommentsHeader for top level comments

* fix: update commentsViewedAfterComment to support ncomments

* fix typo, lint

* cleanup: remove old CSS

* enhance: inject topLevel and its children new comments, simplify injection logic

- top-level and nested comment handling share the same recursion logic
- ShowNewComments references the item object for every type of comments
— note: item from item-full.js is passed to comments.js
- depth now starts at 0 to support top level comments
- injection and counting now reach the deepest level, updating also the deepest comment

* cleanup: remove unused topLevel prop

* fix: deepest comments don't have CommentsRecursive structure, don't access it on injection

* move top level ShowNewComments above CommentsHeader; preserve space to avoid vertical layout shifting

* cleanup: remove unused item on CommentsHeader

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Co-authored-by: Keyan <34140557+huumn@users.noreply.github.com>
2025-07-21 15:38:15 -05:00
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