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Author SHA1 Message Date
b4c81d820c Cast a party's video to a Chromecast
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Implements a detailed spec (Google Cast / Chromecast integration) asking
for a member to cast the party's video to a Chromecast's Default Media
Receiver, with play/pause/seek shown as a remote on the sender's own
screen. The spec's description of this app's architecture (one shared
Emby stream per party, the server proxying 100% of Emby access) was
verified directly against the real code before building anything, since
it named specific existing services/routes as the integration points.

A Chromecast is a new kind of client for the existing party-stream/burn
relay: it can't carry the sender's httpOnly session cookie at all, so it
needed its own narrow way in without weakening "the server holds the
only real Emby token" the rest of the app is built around.

- New CastTokenService (same shape as AuthService: in-memory Map, opaque
  crypto.randomUUID() keys, TTL-checked) issues a token scoped to one
  {partyId, userId}, standing in for that member's own EmbySession.
  New POST/DELETE /api/parties/:partyId/cast-token to mint/revoke one.
- The 4 routes a Chromecast actually needs (party-stream/master.m3u8,
  party-stream/raw, burn/master.m3u8, burn/:segment) gained one small
  fallback (sessionForStream in index.ts): try the session cookie first,
  same as ever, then a castToken query param - either way the result is
  the same EmbySession type, so PartyStreamService/TranscodeService/
  EmbyClient needed zero changes. The image/subtitle routes stay
  cookie-only, outside the spec's own 4-route list.
- PartyService.leave() now revokes whatever cast token the leaving
  member held, unconditionally - a token dies the instant its owner
  actually leaves the party regardless of TTL or whether the client got
  a chance to call the explicit stop-casting route.
- New client/src/cast.ts is the only module touching the CAF Sender SDK
  (loaded as a pinned CDN script, same pattern as hls.js/socket.io) -
  exposes a small PlaybackDriver interface (currentTime/paused/play/
  pause) with two implementations, one over the local <video>, one over
  CAF's RemotePlayer/RemotePlayerController. This was the only new
  abstraction the feature needed, not a new sync mechanism: Player.ts's
  existing sendLocalState/applyRemoteState already read and write "the
  player" in one place each, so pointing them at whichever driver is
  active carried the host-only gate, drift-tolerance reconciliation, and
  3s heartbeat over unchanged. Seek was already "the host's next
  broadcast" with no separate event, so seeking on the TV is party-wide
  for free; a non-host caster already only ever received state, so
  redirecting that to the cast driver reproduces "still dependent on the
  host" automatically.
- Cast button in the player's action bar, shown to any member (not just
  the host) once cast.framework reports a receiver on the network.
  Starting a cast tears down the local hls.js instance; ending one
  (user-stopped, or the receiver dropping off on its own) resyncs local
  playback via the same loadVideo path an audio/quality change already
  uses. A real reload for any other reason (item change, burn-in/
  subtitle/stream-options change) simply ends an active cast first,
  rather than keeping a live session in sync with every kind of party
  transition - not worth the complexity for v1.

Scoped to video parties only - the spec's every concrete reference is
video-specific, and MusicBar.ts has no comparable control surface today.

Tests: CastTokenService (issue/resolve/reissue-invalidates-the-old-one/
revoke/wrong-party-rejection), PartyService.leave()'s new call. Full
typecheck/test/build clean on both projects (115/115 server tests).
Confirmed against the real running server that the 4 streaming routes
still reject a request with no auth exactly as before, and now also
reject an invalid castToken - both a plain 401, no regression. Confirmed
in a real browser that the Cast SDK loads and initializes correctly. Not
verified: no real Chromecast or Emby login credentials in this
environment to take a cast session, or the button's own live behavior,
any further - see docs/architecture.md's "Casting to a Chromecast"
section.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-15 10:13:12 +02:00
8c9852d854 Move the request-pause/resume buttons off the subtitle zone
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Asked for directly: .requestToolbar (the non-host's "Demander une
pause"/"Demander une reprise" buttons) shared .bottomOverlay's
centered-bottom column with the request banner and the follower
notice - which is also exactly where a native <track> subtitle
renders. Real, clickable buttons sitting there for the whole session
is a worse problem than the banner (transient, 4s) or the notice
(static text) occasionally doing the same.

Pulled #requestToolbar out of .bottomOverlay into its own sibling
block in Player.html, positioned independently in the bottom-right
corner instead (position: absolute; right: 16px; bottom: 20px), and
stacked as a column (align-items: flex-end) rather than a row so the
two pill buttons never fight a narrow phone screen for width side by
side. .bottomOverlay itself is untouched - still centered-bottom,
still just the banner and the notice.

Verified against the real bundle (mocked-fetch + real dist, this
session's standing harness) as a follower at both desktop and phone
width: the two buttons render bottom-right, clear of the (still
centered) follower notice, at both widths. Client typecheck/build
clean. docs/architecture.md updated.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-14 23:08:28 +02:00
26da8fc5dc Self-hosted ffmpeg pipeline for PGS (image) subtitle burn-in
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Asked for directly, right after the client-side <track> redesign closed
every *text* subtitle case: PGS/VobSub/DVB subtitles (Blu-ray/DVD rips)
are bitmaps, not text - there's nothing for Emby's Stream.vtt conversion
to extract, so a native <track> fundamentally can't render one. Rather
than keep asking Emby's own transcode to burn these in (the exact thing
that kept failing in earlier sessions - missing fontconfig, then an
unrelated "Error starting ffmpeg"), this runs ffmpeg ourselves: a PGS
stream decodes like a second video track, and ffmpeg's `overlay` filter
composites it directly - no text rendering, no libass, no fontconfig
anywhere in this path.

One shared stream per PARTY, not per viewer - explicitly asked for after
the initial plan: every member plugs into the exact same server-emitted
stream, mirroring "host drives, everyone follows" rather than a
per-viewer model. Picking a burn-in subtitle is therefore a host-only,
party-wide choice, like play/pause/next already are.

- server/src/services/TranscodeService.ts (new): one ffmpeg session per
  partyId. getOrStartSession negotiates PlaybackInfo (via the new
  CatalogService.getMediaSource), converts Emby's absolute
  MediaStreams[].Index into ffmpeg's type-relative 0:s:N/0🅰️N
  (absoluteToRelativeIndex - pure, unit-tested), and spawns ffmpeg
  against Emby's own direct/static file endpoint (TODO(verify) - no
  Emby server reachable from this dev environment, see the function's
  own comment). Output is real progressive HLS to a temp dir, served by
  two new routes that poll briefly for the next file. endSession/
  reapIdleSessions handle teardown; PartyService's destroy path and
  advanceQueue both end a party's session immediately, the idle sweep
  is the backstop.
- server/src/services/PartyService.ts: Party/PartyPublicState gain
  burnInSubtitleIndex/burnInAudioIndex (null together = no burn-in);
  advanceQueue clears them (a new item's indices mean nothing on the
  old one).
- server/src/realtime/SocketGateway.ts: new host-only "setBurnInSubtitle"
  handler broadcasting "burnInChanged" - same shape as "next"/
  "itemChanged".
- server/src/services/CatalogService.ts: new getMediaSource() (id/
  container/streams together - what TranscodeService needs); extended
  the local PlaybackInfoResponse type with Container.
- server/src/Logger.ts: new Logger.transcode().
- server/src/index.ts: GET /api/catalog/burn/:partyId/master.m3u8 and
  .../:segment (membership-checked, same pattern as the party REST
  routes); a dedicated idle-reap interval for TranscodeService.
- server/Dockerfile: `apk add ffmpeg` in the runtime stage - no font
  packages needed, unlike Emby's own text-subtitle burn-in.
- client/src/api/party.ts, client/src/api/embyApi.ts: setBurnInSubtitle/
  onBurnInChanged on PartyConnection, burnInStreamUrl().
- client/src/views/player/Player.{html,css,ts}: the subtitle picker's
  image-track options go from unconditionally disabled to host-only
  selectable, labeled to say picking one restarts the stream for
  everyone. Every member (host included) only ever reacts to the
  resulting "burnInChanged" broadcast - never applies a pick
  optimistically, same discipline the rest of the player already uses.
  Audio/quality are disabled while a burn-in is active (one fixed
  encode); a follower's subtitle select is disabled too (nothing left
  for them to meaningfully pick).
- server/test/transcodeService.test.ts (new): absoluteToRelativeIndex,
  session start/reuse/replace, endSession, reapIdleSessions -
  child_process.spawn mocked via a small explicit test seam
  (setSpawnForTesting), never invoking a real ffmpeg binary.
- server/test/socketGateway.test.ts, partyService.test.ts,
  catalogService.test.ts: host-only gating + broadcast for
  setBurnInSubtitle, advanceQueue's reset, toPublicState exposing the
  new fields, getMediaSource.
- docs/architecture.md, README.md: design + an explicit "assumptions to
  verify" note (the direct-source URL shape, first and foremost).

Verified: full typecheck+test+build on both projects (56/56 server
tests). No Emby server or ffmpeg binary is reachable from this dev
environment, so the actual command against a real PGS file is
unverified - flagged explicitly in the docs, same "TODO(verify)" spirit
already used elsewhere in this codebase for an Emby response shape that
can't be checked locally.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-14 18:05:08 +02:00
c14d0bc08b Replace avatar-click with a request toolbar; add "request resume"
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Asked for directly: a visible bottom toolbar for non-host members
instead of clicking your own small avatar circle (never a very
discoverable affordance), and a second request alongside pause -
"please resume".

- server/src/types.ts, server/src/realtime/SocketGateway.ts: new
  requestResume/resumeRequested, byte-for-byte the same shape and
  handler pattern as requestPause/pauseRequested, independently
  throttled (its own lastResumeRequestUtc - not a shared budget with
  pause). Kept as a plain broadcast signal, same as pause always was -
  no accept/deny state tracked server-side, the host sees the same
  banner/avatar highlight as everyone else and acts with their own
  existing controls.
- client/src/api/party.ts, client/src/types.ts: requestResume() on
  PartyConnection, onResumeRequested callback, a ResumeRequestedMsg type
  (same shape as PauseRequestedMsg, kept separate so a callback's own
  signature says which request it's for).
- client/src/views/player/Player.{html,css,ts}: the avatar is presence-
  only now (no click handler, no "- demander une pause" title) - a new
  .bottomOverlay wraps the request banner, the follower notice, and a
  new .requestToolbar (Demander une pause / Demander une reprise) as one
  flex column, same "stack in normal flow instead of hand-picking a
  pixel offset per box" fix .topOverlay already needed. Pause and resume
  share one showRequestBanner() - they only ever differed by which word
  appears in the banner text. Renamed the shared CSS classes
  (avatarPauseRequested/avatarPauseBadge -> avatarActionRequested/
  avatarRequestBadge) since they're no longer pause-specific.
- server/test/socketGateway.test.ts: new case confirming requestResume's
  throttle is independent from requestPause's own.

Verified against the real compiled bundle: the toolbar shows for a
follower and stays hidden for the host; each button's own client-side
cooldown collapses a rapid double-click to one emission; a pushed
resumeRequested shows the banner with the right text and highlights the
right avatar.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-14 17:09:01 +02:00
4a31ee741e Rewrite server + client in TypeScript, service-oriented server architecture
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Full rewrite, requested directly. Two independent decisions since
TypeScript can't compile itself away at runtime - "no build step" and
"TypeScript" are mutually exclusive, not a small addition to the existing
setup:
- Server: plain tsc (no bundling need - Node resolves its own requires).
  server/dist mirrors server/src 1:1.
- Client: esbuild (does need bundling) - picked over a heavier tool
  (Vite, webpack) since this app's whole client is a couple thousand
  lines; its built-in CSS-from-JS bundling and a `text` loader for
  importing an HTML template as a string cover everything needed via a
  ~30-line hand-written build script (client/build.mjs), not a config
  file for something built for much bigger apps.
Both projects compile independently (no shared-types package - considered
and rejected as more structural commitment than this app's size
justifies; server/src/types.ts and client/src/types.ts have their own
overlapping DTO copies instead). server/'s `npm run dev` uses tsx for a
compile-free dev loop; `npm run build` (tsc) is what server/Dockerfile's
build stage actually runs. client/'s `npm run watch` is esbuild's own
watch mode.

Server: one singleton service class per feature, generalizing the
PartyManager/MusicQueueService pattern that already existed, rather than
route handlers with logic inline:
- AuthService (from embyAuth.js), CatalogService (NEW - previously ~15
  route handlers' worth of Emby queries/DTO shaping inlined directly in
  index.js), PartyService (renamed from PartyManager), MusicQueueService
  (ported as-is, already service-shaped), SocketGateway (from
  socketHandler.js), EmbyClient (from embyProxy.js - low-level plumbing,
  not called a "service" since it has no state/feature of its own).
- index.ts is now thin wiring only: every route reads the session, calls
  one service method, returns the result.
- Real error-handling pass, not just a port: Express 4 doesn't catch a
  rejected Promise from an async handler on its own - a new asyncRoute()
  wrapper + a single error-handling middleware replace what used to be
  zero handling for a request that outright throws. CatalogService
  methods throw a CatalogFetchError (own HTTP status - getRawItem now
  preserves Emby's real 404 instead of a blanket 502) rather than
  touching res directly.

Client: one folder per view (src/views/<name>/<Name>.ts + .html + .css)
instead of one .js file with the markup inline as a template literal. A
view's static shell moved to its .html (esbuild's text loader); per-item
dynamic content (tile grids, episode/track lists) stays as template
-literal-returning functions in the .ts, same as before. Genuinely shared
CSS (tiles, the presence avatar, the series/album detail-header pattern,
track-list rows) lives under src/styles/, imported by whichever views
need it; src/styles/base.css holds the global primitives, imported once
by app.ts. Deliberately not pushed to zero duplication/renaming shared
classes across views for tidiness alone - not worth the risk in a change
already this large. Player.ts keeps its pre-existing internal shape (the
/party/:id dispatcher + the video renderer in one file, importing
renderMusicPlayer from the sibling folder) - that pattern predates this
rewrite and only needed types, not restructuring.

Two real things the port itself caught, not just carried over:
- A type bug: porting SocketGateway's "members" broadcast, reusing
  PartyService's PublicMember interface would have type-checked fine but
  was the wrong (larger) shape - the socket broadcast never included
  isPaused/positionTicks, only the REST response did. Caught by
  comparing against the original JS line by line, fixed with a dedicated
  SocketMemberDto type.
- A real Express+TypeScript friction point: noUncheckedIndexedAccess
  (enabled in both tsconfigs - genuinely useful elsewhere, e.g.
  PartyService.advanceQueue's array indexing) makes every req.params.xxx
  read a type error, since Express's index-signature typing doesn't know
  a matched route's required :name segment is always present. Resolved
  once with a param(req, name) helper rather than 15 routes' worth of
  scattered assertions.

Verified: both projects type-check cleanly in strict mode (tsc --noEmit -
not just "esbuild didn't complain", which it wouldn't even with type
errors present, since it transpiles without checking). Server: every
unit/integration test from the JS version (party lifecycle logging, the
music queue's timer/vote/pause behavior incl. real setTimeout
auto-advance, the socket integration through SocketGateway+PartyService+
MusicQueueService together, the library-type filter, the playback
-override forcing) re-run against the compiled server/dist output -
identical results; the compiled server was actually started and confirmed
listening cleanly. Client: since esbuild bundles everything into one
app.js (no more individually-importable view modules), testing moved to
driving the real compiled bundle through its actual boot -> login ->
router -> view chain (mocked fetch/Socket.IO/hls.js, real clicks/hash
navigation) - arguably more realistic than the old per-module approach.
Confirmed this way: login, the sidebar, home's carousels, a video party
(presence, host controls, leave), the full music hierarchy, a music party
(presence, vote-skip, pause toggle, the inline browse-and-add panel), and
the series page - all through client/dist's actual output, no thrown
errors anywhere.

Not verified: an actual `docker build` of the new multi-stage Dockerfile -
this dev environment has no Docker at all. The build stage runs the exact
npm run build commands already confirmed working locally, just inside
node:20-alpine - the main remaining risk is something environment
-specific, not the build commands themselves, but a real build is still
the first thing to try after this lands.

docs/architecture.md has the full writeup (new "TypeScript and a
service-oriented architecture" section, plus a corrected top-level
"Components" overview that had gone stale even before this change).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-09-14 09:38:14 +02:00