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feat(youtube): queue media for background cache and fill fields when rea

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- Add `youtube.mediaCache.maxHeight` config option (default 720p)
- Background mode creates text-only cards while cache downloads, queues media updates, fills audio/image fields once cached file is ready
- Announce cache download start and readiness via overlay/OSD notifications
- Skip mpv stream indexes when generating audio from a YouTube cached file
This commit is contained in:
Kyle Yasuda
2026-06-23 20:45:28 -07:00
parent 236f22662c
commit 028636c76d
38 changed files with 2047 additions and 67 deletions
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src/core/services/youtube/media-cache.test.ts
+66
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@@ -55,11 +55,19 @@ test('YouTube media cache exposes the downloaded file after the background job c
const cacheRoot = makeTempCacheRoot();
const spawnedProcesses: FakeYtDlpProcess[] = [];
const spawnCalls: SpawnCall[] = [];
const readyEvents: Array<{ url: string; path: string }> = [];
const startedEvents: Array<{ url: string }> = [];
try {
const cache = createYoutubeMediaCacheService({
cacheRoot,
getYtDlpCommand: () => 'yt-dlp',
onDownloadStarted: (event) => {
startedEvents.push(event);
},
onReady: (event) => {
readyEvents.push(event);
},
spawn: (command, args, options) => {
spawnCalls.push({ command, args, options });
const proc = new FakeYtDlpProcess();
@@ -70,10 +78,15 @@ test('YouTube media cache exposes the downloaded file after the background job c
cache.start('https://youtu.be/demo', { mode: 'background' });
assert.deepEqual(startedEvents, [{ url: 'https://youtu.be/demo' }]);
assert.equal(spawnCalls.length, 1);
assert.equal(spawnCalls[0]?.command, 'yt-dlp');
assert.ok(spawnCalls[0]?.args.includes('--no-playlist'));
assert.ok(spawnCalls[0]?.args.includes('--merge-output-format'));
assert.equal(
spawnCalls[0]?.args[spawnCalls[0].args.indexOf('-f') + 1],
'bestvideo*[height<=720]+bestaudio/best[height<=720]',
);
assert.deepEqual(spawnCalls[0]?.options?.stdio, ['ignore', 'ignore', 'ignore']);
assert.equal(await cache.getCachedMediaPath('https://youtu.be/demo'), null);
@@ -88,6 +101,59 @@ test('YouTube media cache exposes the downloaded file after the background job c
await new Promise((resolve) => setImmediate(resolve));
assert.equal(await cache.getCachedMediaPath('https://youtu.be/demo'), outputPath);
assert.deepEqual(readyEvents, [{ url: 'https://youtu.be/demo', path: outputPath }]);
} finally {
fs.rmSync(cacheRoot, { recursive: true, force: true });
}
});
test('YouTube media cache can disable the download height cap', () => {
const cacheRoot = makeTempCacheRoot();
const spawnCalls: SpawnCall[] = [];
try {
const cache = createYoutubeMediaCacheService({
cacheRoot,
getYtDlpCommand: () => 'yt-dlp',
spawn: (command, args, options) => {
spawnCalls.push({ command, args, options });
return new FakeYtDlpProcess();
},
});
cache.start('https://youtu.be/demo', { mode: 'background', maxHeight: 0 });
assert.equal(spawnCalls.length, 1);
assert.equal(
spawnCalls[0]?.args[spawnCalls[0].args.indexOf('-f') + 1],
'bestvideo*+bestaudio/best',
);
} finally {
fs.rmSync(cacheRoot, { recursive: true, force: true });
}
});
test('YouTube media cache applies the configured download height cap', () => {
const cacheRoot = makeTempCacheRoot();
const spawnCalls: SpawnCall[] = [];
try {
const cache = createYoutubeMediaCacheService({
cacheRoot,
getYtDlpCommand: () => 'yt-dlp',
spawn: (command, args, options) => {
spawnCalls.push({ command, args, options });
return new FakeYtDlpProcess();
},
});
cache.start('https://youtu.be/demo', { mode: 'background', maxHeight: 480 });
assert.equal(spawnCalls.length, 1);
assert.equal(
spawnCalls[0]?.args[spawnCalls[0].args.indexOf('-f') + 1],
'bestvideo*[height<=480]+bestaudio/best[height<=480]',
);
} finally {
fs.rmSync(cacheRoot, { recursive: true, force: true });
}