screentinker/server
screentinker 65a24682f0
Stop schedules landing on the wrong date (#284)
Three separate defects all showed up as "I saved a schedule and it moved".

1. expandSchedule emitted two different wire formats. A one-off returned
   start_time untouched - a naive wall-clock string, which the browser parses
   in its own zone - while a recurring instance returned cursor.toISOString(),
   an absolute instant derived by reading that same string in the SERVER's
   zone. The browser converted it back and the two conversions do not cancel:
   an operator in Tokyo saving Wednesday 20:00 got Thursday 10:00 from a
   US-Central server. Only recurring schedules were affected, which is why it
   looked intermittent.

   The calendar was also the odd one out. services/scheduler.js compares
   start_time as a string and never builds a Date from it, so expandSchedule
   was the only place in the codebase treating a wall-clock time as an
   instant - the drawing disagreed with playback as well as with the browser.

2. Saving an edit moved the schedule to today. The save handler rebuilds
   start_time from `pendingCreateDate || new Date()`, and editSchedule()
   restored only HH:MM - it never recorded the date being edited. Changing a
   colour on a block dated 5 Aug rewrote it to this week. No timezone
   mismatch required; this one hit everybody and silently altered stored data.

3. A cancelled drag-create leaked its date into the next schedule.
   pendingCreateDate was cleared only on a successful save, and the modal's
   two dismissers are inline onclick="...display='none'" attributes that
   cannot reach that scope. The date is now assigned by every path that OPENS
   the modal, so no dismissal path can leave a stale value behind.

Tests assert the property rather than a literal: that the wire value is
wall-clock and that the day survives a server/browser zone mismatch in BOTH
directions. A literal-string assertion would pass just as happily with the
bug present on a differently-configured CI box. Both new files fail on the
parent commit and pass here; the schedule, calendar and timezone suites are
green at 85 tests.


Claude-Session: https://claude.ai/code/session_014kfhrUPit5MCqxeTQyqr56

Co-authored-by: Dan Walters <dan.walters@bytetinker.net>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-18 09:14:23 -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 Opt-in install statistics (#267) 2026-08-13 17:27:10 -05:00
lib Check what is IN a cached update, and add a way to throw it away (#274) 2026-08-14 08:37:05 -05:00
middleware Merge branch 'fix/recovery-grants' into release/auth-campaign 2026-07-26 16:22:59 -05:00
player Add org-level widget sandbox isolation toggle with warnings 2026-08-10 21:14:42 +00:00
routes Stop schedules landing on the wrong date (#284) 2026-08-18 09:14:23 -05:00
scripts Drop sharp: pure-JS image ops on a worker thread (#263) 2026-08-13 11:40:13 -05:00
services #240: stop the morning wave buying itself a blocking checkpoint 2026-08-06 20:22:21 -05:00
test Stop schedules landing on the wrong date (#284) 2026-08-18 09:14:23 -05:00
ws Add org-level widget sandbox isolation toggle with warnings 2026-08-10 21:14:42 +00:00
.gitignore feat(email): Microsoft Graph send + alert spam protection + preferences UI 2026-05-12 18:16:40 -05:00
config.js SSO: prove domain ownership by DNS, and fix what the second review found 2026-08-10 19:23:46 -05:00
package-lock.json Stop shipping a licence we would rather not have to explain (#281) 2026-08-14 14:50:18 -05:00
package.json Stop shipping a licence we would rather not have to explain (#281) 2026-08-14 14:50:18 -05:00
server.js Fix a load-time crash that took down any install collecting statistics (#279) 2026-08-14 12:17:41 -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