screentinker/server
ScreenTinker 3d9ef039e5 Make the volume slider real, and stop an empty playlist wiping the cache
Three faults in the web player, each found by driving the shipped code in a
browser against the real server rather than by reading it.

set_volume did nothing at all. The dashboard sends `{ level: 0..1 }`
(device-detail.js: slider/100) and the Android player reads exactly that; this
player read `payload.value` and divided it by 100. Nothing in the product sends
`value`, so every browser panel acked the command and ignored it — the quietest
possible failure. Correcting only the key would have been worse than leaving it
broken: `level: 0.5` would have become 0.5%, which is inaudible and looks fixed.
The fraction is now canonical, `value` is still read as a percentage for
anything written against the old handler, and the scale is chosen by WHICH KEY
arrived rather than by the size of the number — 1 is legal in both conventions,
so a magnitude guess is guaranteed to be wrong for somebody. Parsing moved into
volumeLevelFromCommand() so it can be asserted without a socket.

setMediaVolume() also wrote `el.muted = (v === 0)`, so any non-zero volume
un-muted whatever was playing. An item an operator had deliberately silenced
started making noise the moment anyone touched the slider — reproduced live:
item flagged muted, one set_volume, muted went false. Mute has four inputs and
a fixed order (lib/media-mute.js), it is resolved when the element is mounted,
and a level is not entitled to overrule it — least of all the autoplay rule,
where unmuting without a gesture costs the video rather than winning the audio.
Volume 0 is silence on its own.

And the service worker pruned its content cache to an EMPTY keep-set.
`assignments: []` is what the server sends for a device between playlists, for a
playlist never published, and inside the `catch` when a published_snapshot fails
to parse — none of which mean "delete the media". Reproduced: three cached
assets, one empty payload, cache emptied. That is only survivable while the
uplink is up, which is precisely when the offline cache is worthless. A cache
kept too long costs disk the quota reclaims anyway.

Verified in Chrome against a live server: volume 0.42/0.8/0/0.25 land on the
element and survive an item change, a muted item stays muted through a volume
command, and three cached assets survive an empty push.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Uaeo9MvzKoyXuN6ZsbhtkL
2026-08-06 16:18:25 -05:00
..
config fix(logging): gate CF-Connecting-IP on a Cloudflare peer, not any trusted proxy 2026-07-26 10:23:04 -05:00
db Offline media on every player, and a revision so the cache can still be updated 2026-08-05 15:27:36 -05:00
lib Merge #236/#235: portrait video walls, and a wall status view 2026-08-06 09:52:20 -05:00
middleware Merge branch 'fix/recovery-grants' into release/auth-campaign 2026-07-26 16:22:59 -05:00
player Make the volume slider real, and stop an empty playlist wiping the cache 2026-08-06 16:18:25 -05:00
routes Merge #236/#235: portrait video walls, and a wall status view 2026-08-06 09:52:20 -05:00
scripts fix(content+android): rotation-aware media — portrait upright on dashboard AND player (#170) (#172) 2026-07-12 22:05:11 -05:00
services Show only the controls a display can actually honour 2026-08-05 14:24:52 -05:00
test Make the volume slider real, and stop an empty playlist wiping the cache 2026-08-06 16:18:25 -05:00
ws Describe a portrait video wall as portrait, and stop a wall hiding its screens 2026-08-06 09:46:31 -05:00
.gitignore feat(email): Microsoft Graph send + alert spam protection + preferences UI 2026-05-12 18:16:40 -05:00
config.js Add an operator override for self-update on MDM-managed panels 2026-07-28 23:07:30 -05:00
package-lock.json chore(release): v1.9.29 2026-08-06 08:39:26 -05:00
package.json chore(release): v1.9.29 2026-08-06 08:39:26 -05:00
server.js Describe a portrait video wall as portrait, and stop a wall hiding its screens 2026-08-06 09:46:31 -05:00
smoke-ui.js Keep the smoke test out of npm test, and update the lockfile 2026-07-28 20:34:34 -05:00
version.js chore(version): single-source VERSION, env-configurable data paths, bump tooling 2026-06-10 12:56:03 -05:00