Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import { useEffect, useRef, useState } from "react";
import { useRouter } from "next/navigation";
import type { Item } from "@/types";
import { Card } from "@/components/ui";
import { ItemCard } from "@/features/items/ItemCard";
import { DecisionControls } from "./DecisionControls";
import { triageDecisions, type TriageResult } from "./roundCopy";
import { DeferControl } from "./DeferControl";
import { SetAsideButton } from "./SetAsideButton";
import { useOptionalTriageUndo } from "./TriageUndoProvider";
import { enqueue, newClientKey, type PendingEntry } from "./decisionQueue";
import { directSubmit } from "./directSubmit";
import { drain, triggerFlush } from "./decisionFlusher";
import { STUMBLE_LINE, useOptimisticRound } from "./useOptimisticRound";
import { PendingNotices } from "./pendingNotices";
import { SortProgress } from "./SortProgress";
export interface TriageRoundQueueEntry {
item: Item;
deferred: boolean;
heroPhotoUrl?: string;
}
const add = (set: ReadonlySet<string>, id: string): ReadonlySet<string> => new Set(set).add(id);
const without = (set: ReadonlySet<string>, id: string): ReadonlySet<string> => {
const next = new Set(set);
next.delete(id);
return next;
};
interface TriageRoundProps {
curatorId: string;
sessionId: string;
/** ULID collection.id — the queue key + disposition endpoint (never the slug). */
collectionId: string;
/** collection.slug ?? collection.id — ItemCard's link base. */
collectionSlugOrId: string;
/** chooseSortPhase's feelings queue: active pieces first, then Not yet ones. */
queue: TriageRoundQueueEntry[];
/** Live pieces already placed before this visit (the progress seed). */
placedSeed: number;
/** Where the phase hands off once every piece has passed through (…/sort?phase=pairs). */
nextHref: string;
}
/**
* The feelings phase (spec §4): "How do you feel about this one?" for every live
* piece, once. Answers advance from local state (persist-before-advance); Not yet
* sends a piece to the end of the phase, and a second Not yet lets it rest; Not
* mine sets it aside (with Bring back). When every piece has passed through, the
* answers are landed and the screen hands off to pairs.
*/
export function TriageRound({ curatorId, sessionId, collectionId, collectionSlugOrId, queue, placedSeed, nextHref }: TriageRoundProps) {
const router = useRouter();
const [seed] = useState(placedSeed);
const [deferredAtMount] = useState(() => new Set(queue.filter((e) => e.deferred).map((e) => e.item.id)));
const [entries, setEntries] = useState<TriageRoundQueueEntry[]>(queue);
const [handled, setHandled] = useState<ReadonlySet<string>>(new Set());
const [placed, setPlaced] = useState<ReadonlySet<string>>(new Set());
const [escaped, setEscaped] = useState<ReadonlySet<string>>(new Set());
const undoCtx = useOptionalTriageUndo();
const current = entries.find((e) => !handled.has(e.item.id));
const round = useOptimisticRound({ curatorId, sessionId, collectionId });
const { key, revisit } = round;
// Mounted empty so the region exists before its text changes (SC 4.1.3).
const [announcement, setAnnouncement] = useState("");
const heading = useRef<HTMLHeadingElement>(null);
const backControl = useRef<HTMLButtonElement>(null);
const focusAfterUndo = useRef(false);
// Bring back (provider's undo cleared) returns the piece to this phase.
const lastUndoRef = useRef(undoCtx?.undo ?? null);
const undoNow = undoCtx?.undo ?? null;
useEffect(() => {
const prev = lastUndoRef.current;
lastUndoRef.current = undoNow;
if (prev === null || undoNow !== null || !handled.has(prev.itemId)) return;
setHandled((h) => without(h, prev.itemId));
setEscaped((e) => without(e, prev.itemId));
}, [undoNow, handled]);
const revisitEntry = revisit === null ? undefined : entries.find((e) => e.item.id === revisit.itemId);
const shown = revisitEntry ?? current;
// Undo of the only queued answer takes its control away; land on the question.
useEffect(() => {
if (!focusAfterUndo.current) return;
focusAfterUndo.current = false;
Eif (!backControl.current) heading.current?.focus();
});
// Every piece has passed through: land the answers, then on to pairs (once).
const handedOff = useRef(false);
useEffect(() => {
if (shown !== undefined || handedOff.current) return;
handedOff.current = true;
void drain([key]).finally(() => router.replace(nextHref));
}, [shown, key, nextHref, router]);
async function handleTriage(target: Item, decision: { itemId: string; result: TriageResult }): Promise<boolean> {
if (!(await round.submitDecision(target.id, decision))) return false;
setPlaced((p) => add(p, target.id));
setEscaped((e) => without(e, target.id));
setHandled((h) => add(h, target.id));
return true;
}
// The piece changes under the person's focus, so say which one is in front of them.
function undo() {
const back = round.goBack();
if (back === null) return;
const name = entries.find((e) => e.item.id === back.itemId)?.item.name ?? "";
if (!back.fresh) {
setAnnouncement(`Back to ${name}. You placed this with ${back.label} — change it?`);
return;
}
setPlaced((p) => without(p, back.itemId));
setHandled((h) => without(h, back.itemId));
setAnnouncement(`Back to ${name}.`);
focusAfterUndo.current = true;
}
function keepGoing() {
round.clearRevisit();
Eif (current) setAnnouncement(`Back to ${current.item.name}.`);
}
async function handleNotYet(target: TriageRoundQueueEntry) {
setEscaped((e) => add(e, target.item.id));
if (target.deferred) {
// Already waited once this visit (or came back waiting): let it rest so the phase can end.
setHandled((h) => add(h, target.item.id));
return;
}
const entry: PendingEntry = {
kind: "disposition",
clientKey: newClientKey(),
itemId: target.item.id,
disposition: "deferred",
enqueuedAt: new Date().toISOString(),
};
const persisted = await enqueue(key, entry, () => triggerFlush(key));
// best-effort: the piece still waits at the end and returns next visit
if (persisted === "needs_fallback") await directSubmit({ sessionId, collectionId }, entry);
setEntries((prev) => [...prev.filter((e) => e.item.id !== target.item.id), { ...target, deferred: true }]);
}
function handleNotMine(target: Item) {
Eif (undoCtx) void undoCtx.setAside(target.id, target.name);
setEscaped((e) => add(e, target.id));
setHandled((h) => add(h, target.id));
}
// Placed so far over what this visit can still place: pieces placed before it
// (seed), plus this visit's active pieces, plus any piece that came back waiting
// and has now been placed (a waiting piece only counts once it is answered, so a
// second Not yet never leaves a hole), minus the active pieces that left without a
// feeling (Not yet / Not mine) — they are not "to place" any more this visit.
const done = seed + placed.size;
const total =
seed +
(queue.length - deferredAtMount.size) +
[...placed].filter((id) => deferredAtMount.has(id)).length -
[...escaped].filter((id) => !deferredAtMount.has(id)).length;
return (
<div className="space-y-6">
<SortProgress done={done} total={total} />
<p aria-live="polite" className="sr-only">
{announcement}
</p>
<PendingNotices collectionId={collectionId} sessionId={sessionId} />
{shown === undefined ? (
<p role="status" className="text-sm text-ink-soft">
Just a moment…
</p>
) : (
<div className="space-y-6">
<div>
<h1 ref={heading} tabIndex={-1} className="text-2xl text-ink focus:outline-hidden sm:text-3xl">
How do you feel about this one?
</h1>
{/* One button that swaps Undo ↔ Keep going, so focus stays put (SC 2.4.3). */}
{(round.canGoBack || revisit !== null) && (
<button
ref={backControl}
type="button"
onClick={revisit !== null ? keepGoing : undo}
className="mt-1 inline-flex h-11 items-center rounded-control text-sm text-ink-soft transition-colors hover:text-ink focus:outline-hidden focus-visible:ring-2 focus-visible:ring-offset-2 focus-visible:ring-offset-ground focus-visible:ring-primary"
>
{revisit !== null ? "Keep going" : `Undo: ${round.lastLabel}`}
</button>
)}
</div>
{round.stumble && (
<p role="status" className="text-sm text-ink-soft">
{STUMBLE_LINE}
</p>
)}
{shown.deferred && (
<div className="flex items-center gap-2 rounded-control bg-content-mid px-4 py-3 text-ink">
<span aria-hidden className="text-lg leading-none">☾</span>
<p className="text-sm">
<span className="font-medium">Ready when you are.</span> This one was waiting for you — no rush.
</p>
</div>
)}
<ItemCard item={shown.item} collectionId={collectionSlugOrId} heroPhotoUrl={shown.heroPhotoUrl} imageClassName="h-64" />
<Card padding="lg">
<div className="space-y-4">
{revisit !== null && (
<p className="text-sm text-ink-soft">You placed this with {revisit.label} — change it?</p>
)}
{/* NOT keyed per piece: a re-keyed region is never announced (SC 4.1.3). */}
<DecisionControls
onDecision={(d) => handleTriage(shown.item, d)}
decisions={triageDecisions(shown.item.id)}
priorAnswer={revisit?.label}
/>
{revisit === null && (
<div className="flex flex-wrap items-start gap-x-6 gap-y-3 border-t border-hairline pt-3">
<DeferControl onDecision={() => void handleNotYet(shown)} />
<SetAsideButton onDecision={() => handleNotMine(shown.item)} />
</div>
)}
</div>
</Card>
</div>
)}
</div>
);
}
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