fix(zoo): read signature timestamps as UTC so the scan age stops reading 0h - #150
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…ing 0h The scan-age bookmark sat at "0h" no matter how long ago a system was really scanned. `get_system_signatures/1` serialises timestamps with `Calendar.strftime(dt, "%Y/%m/%d %H:%M:%S")`, which is UTC but carries nothing that says so. `new Date` reads that format as *local* time, so west of UTC every signature resolves to an instant in the future, `now - updated_at` goes negative, and the `Math.max(0, ...)` clamp in `computeSignatureAge` returns 0. At UTC-5 that swallows the first five hours of every system's age, and since pasting the probe scanner window re-stamps every signature it contains, an actively scanned chain never leaves that window. `parseTimestamp` now resolves the zone-less server format through `Date.UTC` explicitly, and still accepts an ISO-8601 string that names its own zone. The value it returns is a real instant, so callers compare it against `Date.now()` without knowing how it was encoded. This is not a regression from #142. The code that PR replaced parsed `updated_at` exactly the same way; what changed is that the bookmark used to render only for unlinked wormhole signatures and only under 12h, so the skew mostly hid behind a bookmark that was not drawn. Making the age render everywhere turned a latent bug into a visible one. The same wire format reaches the signature table, where `TimeLeft` corrects for it by adding `getTimezoneOffset()` to *now*. That is why this is fixed in the helper rather than in the serialiser: sending ISO-8601 instead would fix the source for both readers, but `TimeLeft` would then double-correct and put a fresh offset error into the "Added" and "Updated" columns. `map_structures_event_handler.ex` emits the same ambiguous format and has the same latent trap. Tests run pinned to America/Phoenix. Every existing fixture was built with `toISOString()`, which is unambiguous, and at offset 0 a local-parsed timestamp is indistinguishable from a UTC one — so a regression test for this cannot detect anything in a UTC-run suite.
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Included review availability: 0 reviews are currently available. Based on recent review activity, included reviews refill at 3 per hour. 📝 WalkthroughWalkthroughThe timestamp age helper now parses zone-less backend timestamps as UTC. Jest runs timestamp tests in the ChangesTimestamp age handling
Elixir handler formatting
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to The change makes server timestamps parse as UTC while preserving explicitly zoned ISO-8601 values, correcting scan-age display without introducing an actionable merge-blocking risk. Poem
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@assets/js/hooks/Mapper/components/map/helpers/signatureAge.ts`:
- Line 57: Update the SERVER_TIMESTAMP parsing in signatureAge.ts to require the
entire value to match and validate captured month, day, hour, minute, and second
ranges before calling Date.UTC, rejecting malformed or out-of-range timestamps
instead of allowing normalization. Add regression tests covering out-of-range
components and trailing text.
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assets/jest.config.jsassets/js/hooks/Mapper/components/map/helpers/signatureAge.test.tsassets/js/hooks/Mapper/components/map/helpers/signatureAge.ts
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🧪 Test Results Summary
Full output for the advisory checks is attached to this run as 🔧 Reproduce locallymix format
mix test
mix credo --strict
mix dialyzer🤖 Auto-generated by GitHub Actions |
The file has been failing `mix format --check-formatted` and taking the
whole static-analysis gate down with it, which blocks every PR into
guarzo/zoo, not just this one.
Mechanical only: line wrapping, plus the formatter dropping the
redundant parens in `&("#{...}_#{&1}")` captures. `mix compile
--warnings-as-errors` is clean and the suite is green.
Raised in review on #150. The match was unanchored and `Date.UTC` normalises rather than rejects, so a value the previous `new Date` call would have thrown out could now resolve to a real instant: `2026/13/09` became February 2027, `2026/02/31` became March 3rd, and a valid prefix followed by arbitrary text parsed as though the text were not there. That is worse than no timestamp, because nothing downstream can tell the difference — it quietly contradicts the documented contract that an unparseable value falls through to `inserted_at`. The pattern is now anchored at both ends, and the components are read back off the result: anything `Date.UTC` had to normalise fails the comparison. That covers every out-of-range field, leap years included, without enumerating per-field bounds.
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Aug 17, 2026
…id it (#151) Follow-up to #150, which fixed the scan-age bookmark at the reader while leaving the ambiguous wire format in place. `get_system_signatures/1` and `get_system_structures/1` serialised UTC as `%Y/%m/%d %H:%M:%S`, which carries nothing marking it as UTC, so `new Date` read it as local time. Two readers compensated by adding `getTimezoneOffset()` to *now* — `TimeLeft` and `getRowBackgroundColor` — which cancelled the error out and made the format look correct. Any reader that did not know the trick was silently wrong by the viewer's offset, which is how the bookmark came to sit at "0h". Both handlers now emit `DateTime.to_iso8601/1`, and both corrections are gone. They had to move together: either half alone leaves the readers double-correcting in the opposite direction. `signatureAge.ts` drops the format-sniffing branch #150 added, and its tests go with it — nothing in lib/ emits the zone-less format any more, so there is one parse path again. Structure timestamps have no frontend reader at all (`mapServerStructure` spreads them through untouched; the structure timers use a separate `end_time` field), so that half is hygiene, not a behaviour change. Verified: 1808 Elixir tests, 35 frontend tests, `mix format --check-formatted`, `mix compile --warnings-as-errors`, prettier, and no new tsc errors. The new tests fail against the old format — the backend one because `DateTime.from_iso8601/1` rejects it outright, the row-colour one because a signature added seconds ago was landing seven hours stale.
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The scan-age bookmark on the zoo node sat at
0hregardless of how long ago a system was actually scanned.Cause
get_system_signatures/1serialises timestamps withCalendar.strftime(dt, "%Y/%m/%d %H:%M:%S")— UTC, but with nothing marking it as UTC.new Datereads that slash format as local time, so west of UTC every signature resolves to an instant in the future,now - updated_atgoes negative, and theMath.max(0, ...)clamp incomputeSignatureAgereturns 0. At UTC-5 that swallows the first five hours of every age, and because pasting the probe scanner window re-stamps every signature in the system, an actively scanned chain never leaves that window.parseTimestampnow resolves the zone-less server format throughDate.UTCexplicitly, and still accepts an ISO-8601 string that names its own zone.Not a regression from #142
The code #142 replaced parsed
updated_atthe same way. What changed is that the bookmark used to render only for unlinked wormhole signatures and only under 12h, so the skew mostly hid behind a bookmark that was never drawn. Rendering the age everywhere turned a latent bug into a visible one.Why the helper and not the serialiser
The same wire format reaches the signature table, where
TimeLeftcorrects for it by addinggetTimezoneOffset()to now. Sending ISO-8601 instead would fix the source for both readers, butTimeLeftwould then double-correct and put a fresh offset error into the "Added" and "Updated" columns.map_structures_event_handler.exemits the same ambiguous format and carries the same latent trap — both are worth a follow-up that changes serialiser and reader together.Tests
Pinned to
America/Phoenix(no DST). Every existing fixture was built withtoISOString(), which is unambiguous, so at offset 0 a local-parsed timestamp is indistinguishable from a UTC one and a regression test here cannot detect anything in a UTC-run suite. New cases fail onmain(6h reads0, 9h reads2) and pass with the fix. Full frontend suite green: 33 tests.Summary by CodeRabbit