Цвылев Александр Вадимович
ac6b76bf98
"Start radio" in the track menu seeds the queue from a track; RadioController
(headless, in AppShell) tops it up via /radio/next as it drains. QueuePanel's
radio scaffolding is now live: the exploration slider drives familiar<->new and
each entry shows its reason ("why this is playing"). Adds the radio endpoints
(start/next/similar), radio context + actions on the queue slice, and the pick->
entry mapper. Degrades to metadata picks while ML is offline.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
52 lines
1.8 KiB
TypeScript
52 lines
1.8 KiB
TypeScript
import { useEffect, useRef } from 'react';
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import { useAppDispatch, useAppSelector } from '../../hooks/useAppDispatch';
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import { useRadioNextMutation } from '../../api/endpoints/radio';
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import { appendToQueue } from '../../store/slices/queue';
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import { pickToEntry } from '../../lib/radio';
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// Prefetch more radio tracks once the current position is within this many of
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// the end of the queue.
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const LOOKAHEAD = 3;
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/**
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* Headless controller: while a radio drives the queue, top it up as it drains
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* (§6.5 / B6 infinite feed). Mounted once in AppShell. A failed prefetch just
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* stops the feed — playback of what's already queued is unaffected.
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*/
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export function RadioController() {
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const dispatch = useAppDispatch();
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const radio = useAppSelector((s) => s.queue.radio);
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const currentIndex = useAppSelector((s) => s.queue.currentIndex);
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const entries = useAppSelector((s) => s.queue.entries);
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const [radioNext] = useRadioNextMutation();
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const loadingRef = useRef(false);
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useEffect(() => {
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if (!radio) return;
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const nearEnd = currentIndex >= entries.length - LOOKAHEAD;
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if (!nearEnd || loadingRef.current) return;
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loadingRef.current = true;
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void (async () => {
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try {
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const res = await radioNext({
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seedTrackId: radio.seedTrackId ?? undefined,
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fromLikes: radio.fromLikes,
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exploration: radio.exploration,
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count: 10,
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excludeIds: entries.map((e) => e.trackId),
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}).unwrap();
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if (res.picks.length > 0) {
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dispatch(appendToQueue(res.picks.map(pickToEntry)));
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}
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} catch {
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// best-effort — leave the queue as-is
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} finally {
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loadingRef.current = false;
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}
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})();
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}, [radio, currentIndex, entries, radioNext, dispatch]);
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return null;
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}
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