perf(posts): memoised replies, paginated comments, persistent drafts - #31
perf(posts): memoised replies, paginated comments, persistent drafts#31Ayush7614 wants to merge 5 commits into
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TokenComments filtered the whole list per top-level post (O(n^2) per render) and rendered every comment at once with a silent slice composer. Build the reply map once with groupReplies, paginate the top level at 20 with a Show more button and live status, persist the draft per token so a failed signature or reload never loses a typed comment, and announce the character count and errors to assistive tech.
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Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Feature Suggested reviewers: Merge Risk: 🔵 Low · up to Users restoring a reply draft may be unable to submit if its parent was deleted or hidden before comments finish loading. Validate the target after the initial load before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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In `@app/src/components/launchpad/Posts.tsx`:
- Around line 57-60: Update the useEffect that calls loadDraft(chain, token) so
it always assigns the loaded draft to body, including when the result is an
empty string; retain the POST_MAX truncation and ensure chain or token changes
cannot leave the previous body in state.
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…Gitlawb#31) The draft-restore effect only assigned when a draft existed, so text typed for one token stayed in state — and was submittable — after switching to a token without a draft. Always assign the loaded value, even when empty.
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The reply grouping and smaller initial render are worthwhile improvements. Please finish draft persistence so a saved reply retains its destination after a reload.
The 4 new tests and additional storage/grouping checks pass. The reply-target issue follows from the component state and stored format; I did not run a browser/wallet submission. Also, the new Show more control batches the already-fetched array. It does not consume #32's cursor, so those PRs still need coordination before calling this server pagination.
| // token can never leak into — and be submitted from — another token's composer. | ||
| useEffect(() => { | ||
| const t = setTimeout(() => { | ||
| setBody(loadDraft(chain, token).slice(0, POST_MAX)); |
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[P2] Restore the reply target along with the draft body. Start a reply to an existing comment, type text, then reload: this restores the text while replyTo initializes to null, so submitting sends parentId: null and creates a top-level post. The storage helper currently saves only text, so the original destination cannot be recovered. Persist and restore { body, parentId }, handle a missing/hidden parent explicitly, and cover restoring both a top-level draft and a reply draft.
- drafts store {body, parentId} JSON, legacy plain-text still reads
- composer restores both, persists on type/reply/cancel
- missing/hidden parent derives to top-level with explicit notice, no effect loop
- tests for top-level vs reply restore and legacy/bad parent handling
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Inline comments:
In `@app/src/components/launchpad/Posts.tsx`:
- Line 119: Update the target derivation in Posts so restored reply targets are
not signed or submitted until the initial posts load has completed. Track the
initial-load status, validate replyTo against the loaded posts after loading
even when the list is empty, and fall back to null when the parent is missing or
hidden; preserve normal top-level posting behavior.
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…post top-level (PR Gitlawb#31) - track postsLoaded; restored replyTo is pending until first load settles - resolveReplyTarget validates even on empty list, falls back to null (no 404) - submit blocks while pending; composer shows checking/gone states
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Thanks @Vasanthdev2004 for the review ! Addressed the reply-target P2 and the follow-up validation race: drafts now persist |
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Thanks for adding the reply destination to saved drafts. That addresses the original storage issue, and blocking submission during the initial load is the right direction.
Two cases still turn a valid reply into a top-level post: a failed initial fetch, and a parent that exists outside the latest 100 returned comments. I reproduced both against this head with isolated fetch/helper checks; no browser or wallet submission was performed. The inline notes explain the fixes and regression cases.
Requesting changes until reply destinations are preserved when their validity is unknown. The response window is not authoritative evidence that a comment was deleted.
| } catch { | ||
| /* keep */ | ||
| } finally { | ||
| setPostsLoaded(true); |
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setPostsLoaded(true) also runs after an HTTP error or rejected fetch. With a restored reply and the initially empty posts array, that makes resolveReplyTarget mark the parent as missing, and submission uses parentId: null. I reproduced this with both a 503 response and a network rejection. Please mark validation complete only after a successful, valid response, keep the saved target on failure, and cover those failure cases.
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@Vasanthdev2004 Thanks — fixed to only set postsLoaded=true after a successful validated response. A 503 or network rejection now keeps the restored reply pending (blocks submit) so the draft isn’t lost or silently posted as top-level. Added helper checks for both failure modes.
| if (replyTo === null) return { target: null, pending: false, missing: false }; | ||
| if (!postsLoaded) return { target: replyTo, pending: true, missing: false }; | ||
| if (posts.some((p) => p.id === replyTo)) return { target: replyTo, pending: false, missing: false }; | ||
| return { target: null, pending: false, missing: true }; |
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Not finding an ID in this array does not mean the parent is gone: the endpoint only returns the latest 100 rows. For example, a saved reply to ID 100 becomes top-level when the response contains IDs 200 through 101, even if comment 100 still exists. Please preserve the target unless its absence is checked authoritatively; if it really is unavailable, ask the user before changing the destination. Add a regression test for a valid parent outside the returned window.
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@Vasanthdev2004 Thanks — you’re right the window is truncated (latest 100). Fixed resolveReplyTarget to preserve the saved parent instead of falling back to null when not found in the window, so a reply to ID 100 with window 200..101 stays as a reply. Server will reject if truly gone; no silent top-level fallback. Added regression for that case.
…runcated window (PR Gitlawb#31) - Posts.tsx load(): only set postsLoaded after a successful, validated response. A 503 or network rejection no longer marks validation complete with an empty posts array, so a restored reply stays pending (blocks submit) and the draft is not silently turned into a top-level post. - post-threads.ts resolveReplyTarget(): the posts endpoint returns only the latest 100 rows, so absence in the window is not proof the parent was deleted. Preserve the saved reply target after load (no auto fallback to null); server will reject if truly gone. Adds regression for parent ID 100 with window 200..101. Verified: post-threads suite 8/8, tsc --noEmit pass, lint pass, build pass.
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@Vasanthdev2004 Thanks for the follow-up review — both cases you reproduced are fixed: 1) Failed initial fetch (503 / network rejection) no longer loses the reply target —
2) Valid parent outside the latest-100 window is preserved —
Verified: |
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TokenComments did posts.filter(parent_id === id).slice().reverse() for every top-level post on every render (O(n^2)) and rendered all comments at once; the composer silently sliced at POST_MAX with no announcement and a failed signature flow could lose a typed 500-char draft.
This PR: new pure post-threads.ts (groupReplies O(n) + visibleTopIds pagination + per-token draft helpers) with 4 unit tests; TokenComments builds the reply map once via useMemo, paginates the top level at 20 with a Show more button + Showing X of Y status, persists/restores the draft per token, and adds aria-label/describedby, aria-live counter, and role=alert errors.
Verified locally on upstream/main base:
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