fix(booking): every session writer produces the same 30-minute atom shape - #1331
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Every one of these was already prettier-dirty on `dev` under the pinned 3.8.x — the repo's `format:check` step is `continue-on-error`, so the drift accumulated unnoticed while prettier's conditional-expression and object-type-annotation layouts moved between minors. Isolated deliberately. `checkout.ts` alone is ~1100 lines of pure whitespace, almost all of it in the big Serializable transaction at the tail that this PR never touches, and `handlers.ts` is another ~570 in the same shape. Folded into the functional commits it would bury a four-line row-shape change; kept here, a reviewer can skip one commit, and a rebase that collides with a sibling branch can drop one commit rather than untangle a mixed diff. No behaviour, no logic, no comment text changed. Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
…ltation row A booked session is N contiguous 30-minute `SlotOfAppointment` atoms (#1071 / ADR B1). `handleConsultationCheckout` writes exactly that and connects both the consultant and the consultee to every atom, because the consultant-side conflict filter matches on `user.some.id` — the profile column alone is invisible to it. The webhook fallback that creates the appointment when a capture arrives with no `appointmentId` did neither. It wrote ONE row spanning the whole session, with only the buyer attached. Two consequences, both live: the row is not an atom run, so every run-aware reader (the three mappers, the Stream room key, the join gate, the session timeline) sees a session of the wrong shape; and because no consultant is connected, the allocator's conflict check cannot see it at all and will cheerfully allocate on top of a paid booking. 76 of 87 production consultations are single 60-minute rows, four of them from August, so a writer is still producing them. The chunking now lives once, in `buildContiguousSlotAtomsForWindow` next to the duration-based builder it delegates to, and both writers call it. Same for the event-seat linking that webinar and class checkout each open-coded — a registrant is connected to the consultant's existing slots, never given a row of their own — extracted to `connectAttendeeToEventSlots` ahead of the webhook creators needing it in the next commit. `isTentative` stays `false` here and that is the parity, not a divergence: checkout births `!skipPayment` and the capture webhook flips it, while this creator only ever runs post-capture. `confirmExistingAppointment` re-flips either way. Two things now fail loudly instead of persisting. A plan whose consultant profile has no user cannot produce a conflict-visible booking, so it throws rather than committing a half-connected one — the caller's CRITICAL payment-without-appointment alert is the correct destination for that. And `assertSingleContiguousLiveRun` runs on the rows the create returns, inside the transaction, at no query cost. Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
…hape The remaining three webhook fallback creators, audited against their checkout.ts counterparts (#1319). None of them matched, and two of the mismatches were worse than a wrong shape. **`createClass` was minting a session per buyer.** It created a whole new `Appointment` under the `classId`, holding one tentative seat row spanning `schedulingPeriodStartsAt` to `schedulingPeriodEndsAt` — months wide, no `consultantProfileId`. But a class's Appointments ARE its sessions: that row is what capacity counting, the "fully scheduled" enrolment gate and the consultee's timeline all read. Every legacy enrolment added a phantom months-long session to the class. `handleClassCheckout` connects the buyer to the slots of the sessions the consultant already allocated, and so does this now; an unscheduled class is refused rather than papered over with a placeholder, which is the refusal `createWebinar` already made. **`createSubscription`'s slot branch could not run.** It wrote a seat row with no `startsAt` and no `endsAt`, both NOT NULL with no default; the `as unknown as` cast is what let it compile, and at runtime it could only throw and take the capture transaction with it. `handleSubscriptionCheckout` writes a slotless placeholder and lets the consultant allocate from the Requests tab, so that is what this does now — the dead branch and its cast are gone. **`createWebinar` duplicated the master slot.** A per-attendee row with no `consultantProfileId`, parallel to the run rather than part of it, so the webinar's occupancy grew by a full session per ticket. Now a connection to the existing slots, via the same `connectAttendeeToEventSlots` both checkout handlers use. HOIf/#1202's tentative birth does not survive this, and does not need to: with no rows born there are no confirmed ghosts to strand, and the B2 event-state CAS in `confirmExistingAppointment` is still the only thing that decides what gets flipped or stamped. The residue on a capture-after-cancellation is a connection to the host's slots on a CANCELLED event, refunded by Phase 2 — which is precisely the residue the checkout path has always left, and matching it was the point. The #1202 suite is rewritten around the new shape rather than deleted: it now pins that nothing is minted and that the payer is joined to each existing session slot. Its payment fixture also gained the `user.id` the creators actually read — the mock had omitted it and no assertion had ever reached it. Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
`SlotAllocationService.allocate` in `requested` mode verifies that the appointments already on the request line up with what the consultee asked for. It did that by summing `slotsOfAppointment.length` and comparing it to `requestedSlots.length` — a row count against a 30-minute-atom count. Those are the same number only for an appointment stored the canonical way (#1071). 76 of 87 production consultations are a single 60-minute row. For every one of them the gate saw 1 against 2 and refused: "Appointment mismatch: Found 1 slots in appointments but 2 requested slots. The appointments may have been modified." Nothing had been modified, and no action available to the consultant could make the numbers agree — the request simply could not be approved. Now it sums the atoms each row COVERS, via a `countHalfHourAtoms` helper that lives next to the builder writers use, so the two halves of the invariant stay in one file. The message says what it actually measured. A malformed row — zero or negative width — counts as one rather than zero. It is still a row somebody has to reconcile, and rounding it away would let a mismatch pass silently, which is the opposite of this gate's job. Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
The `trending` sort scores each class plan by counting `SlotOfAppointment` rows created in the last thirty days. Rows are not sessions: under #1071 one session is N contiguous 30-minute atoms, so a plan whose classes were scheduled the canonical way scores twice an identical plan still holding legacy 60-minute rows. The leaderboard was measuring how a plan's sessions happen to be chunked. It now counts contiguous runs via `groupSlotsIntoRuns`, the same reader the mappers and the session timeline use, which answers "one session" for either storage shape. `isDeadSlot` filtering comes along for free, so a cancelled or rescheduled session no longer inflates a plan's rank either. The thirty-day window still applies to the slot rows, which means a run straddling the boundary is counted from the part inside it. That is the existing definition of "recent" here and this change does not renegotiate it. Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
New `2026-09-02 — wave 5` changelog heading with the PR 12 section, covering all seven fixes, the two deliberate behavioural consequences (HOIf/#1202's tentative birth no longer having a creator, and a consultant-less plan now failing a capture loudly), and the fact that nothing here needs a migration or a backfill. Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
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📝 SummarySummary by CodeRabbit
WalkthroughThe PR standardizes consultation slots as contiguous 30-minute atoms, enrolls webinar and class buyers into existing sessions, updates slot allocation and plan ranking, and adds parity and regression tests. ChangesAppointment semantics
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟠 High · up to This PR standardizes appointment rows and changes payment and enrollment behavior, but current paths can still confirm participants for terminal events, report successful class captures without connecting a buyer to session slots, or reject valid legacy-duration bookings; malformed class requests may also return 500 instead of 400. These correctness and payment-state risks should be resolved before merging. Sequence Diagram(s)sequenceDiagram
participant handleConsultationCheckout
participant handlePaymentSuccess
participant buildContiguousSlotAtomsForWindow
participant Prisma
participant EventSlots
handleConsultationCheckout->>buildContiguousSlotAtomsForWindow: Build 30-minute consultation atoms
buildContiguousSlotAtomsForWindow-->>handleConsultationCheckout: Return atom payloads
handleConsultationCheckout->>Prisma: Create tentative consultation appointment
handlePaymentSuccess->>buildContiguousSlotAtomsForWindow: Build 30-minute consultation atoms
buildContiguousSlotAtomsForWindow-->>handlePaymentSuccess: Return atom payloads
handlePaymentSuccess->>Prisma: Create confirmed consultation appointment
handlePaymentSuccess->>EventSlots: Link buyer to existing webinar or class slots
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 42.11% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 19 functions across 9 files. (1 skipped: 1 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Wave 5 PRs 1, 2, 3b, 5 and 6 landed on dev while this branch was open. Four files conflicted and each keeps both sides: - `lib/payments/webhooks/handlers.ts` — the capture fallback now builds the shared 30-minute atom run AND records the A9 participant rows. Consultation records both the consultant and the consultee, because those are the two users the atoms connect. The webinar and class creators no longer mint a seat row, so the attendee's participant row is written against the event's own appointment (one per session for a class), matching what the checkout twins do. - `lib/payments/operations/checkout.ts` — dev's participant writers, block 0b union validation and the A9 payment-linkage block are kept alongside this branch's shared atom builder and `connectAttendeeToEventSlots`. - `__tests__/payments/legacy-capture-tentative-birth.test.ts` — dev's `appointmentParticipant` mocks plus this branch's rewritten expectations. - `docs/booking/05-troubleshooting-and-changelog.md` — the two wave-5 headings are consolidated into one above the 2026-08-14 entry, sections ordered PR 1, 2, 3b, 5, 6, 12. Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
#1328 (wave 5 PR 3) landed while this branch was rebasing onto #1325. Only the booking changelog conflicted: #1328 had already consolidated the two wave-5 headings into one above the 2026-08-14 entry, so this keeps dev's block verbatim — PR 1, 2, 3b, 5, 6, 3 — and appends PR 12 after it. `checkout.ts` merged cleanly: #1328's dead-hold filter, per-attempt lock renewal and under-lock org re-assert sit alongside this branch's shared atom builder. Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
…ries PR 4's section verbatim so #1329's landing merges clean Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
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In `@__tests__/booking-algorithm/slotAllocationService.test.ts`:
- Line 768: Update the allocation test assertion around result to explicitly
require result.success to be true, optionally also verifying that result.error
is absent, so the test proves the legacy 60-minute slot is accepted rather than
merely excluding “Appointment mismatch.”
In `@__tests__/payments/consultation-atom-parity.test.ts`:
- Around line 312-348: Expand
__tests__/payments/consultation-atom-parity.test.ts lines 312-348 with
checkout/webhook parity and replay cases covering zero and negative amounts,
currency mismatch, concurrent invocations, expired signatures or orders, partial
refunds, and idempotent replays. Also update
__tests__/payments/legacy-capture-tentative-birth.test.ts lines 190-223 with
legacy-capture failure and replay cases for class enrollment, ensuring the
required money-capture matrix is covered without changing the existing
successful atom-parity assertions.
In `@app/api/plans/classes/route.ts`:
- Line 299: Validate the untyped request body with a Zod schema before the
classContents.map call, requiring classContents to be an array along with the
other route inputs. Return a 400 response for invalid or missing classContents,
and only invoke the create mapping after successful parsing in the route
handler.
In `@lib/payments/webhooks/handlers.ts`:
- Around line 1528-1533: The participant rows created by recordParticipants in
lib/payments/webhooks/handlers.ts lines 1528-1533 and 1578-1583 must use status
"HELD" rather than "CONFIRMED"; update both the webinar and class participant
creation paths, leaving the existing setParticipantStatus promotion flow
unchanged.
- Line 1565: Update the firstAppointment validation to require an appointment
with at least one session slot, not merely a truthy appointment object. Ensure
the flow only connects the buyer and records a paid participant when
slotsOfAppointment is non-empty; otherwise follow the existing rejection/error
path without reporting success.
In `@utils/slotAllocation/SlotAllocationService.ts`:
- Around line 1907-1910: Normalize the requested coverage to half-hour atoms
before the mismatch check in the allocation validation flow. Update the logic
around existingAtomCount and requestedSlots so legacy 60-minute rows contribute
two atoms, matching countHalfHourAtoms(slot), while preserving the existing
mismatch error for genuinely different coverage.
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__tests__/booking-algorithm/slotAllocationService.test.ts__tests__/payments/consultation-atom-parity.test.ts__tests__/payments/legacy-capture-tentative-birth.test.tsapp/api/plans/classes/route.tsdocs/booking/05-troubleshooting-and-changelog.mdlib/appointments/attendee-seats.tslib/appointments/contiguous-slot-run.tslib/payments/operations/checkout.tslib/payments/webhooks/handlers.tsutils/slotAllocation/SlotAllocationService.ts
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Money-critical code.
⚙️ CodeRabbit configuration file
Files:
lib/payments/operations/checkout.tslib/payments/webhooks/handlers.ts
Edge cases that must be covered for money tests: zero/negative amounts, currency mismatch, concurrent invocations, expired signatures/orders, partial refunds, idempotent replays.
⚙️ CodeRabbit configuration file
Files:
__tests__/booking-algorithm/slotAllocationService.test.ts__tests__/payments/legacy-capture-tentative-birth.test.ts__tests__/payments/consultation-atom-parity.test.ts
Route handlers: authz checked per handler (session + role + org scoping), inputs validated with zod, correct status codes, no internal error leaks.
⚙️ CodeRabbit configuration file
Files:
app/api/plans/classes/route.ts
🪛 GitHub Check: SonarCloud Code Analysis
lib/appointments/contiguous-slot-run.ts
[warning] 95-95: new Error() is too unspecific for a type check. Use new TypeError() instead.
[warning] 92-92: new Error() is too unspecific for a type check. Use new TypeError() instead.
🪛 LanguageTool
docs/booking/05-troubleshooting-and-changelog.md
[grammar] ~188-~188: Ensure spelling is correct
Context: ...: the rows are already in hand from the create's include. ...
(QB_NEW_EN_ORTHOGRAPHY_ERROR_IDS_1)
[style] ~195-~195: Consider an alternative for the overused word “exactly”.
Context: ...d event, refunded by Phase 2 — which is exactly what the checkout path has always left ...
(EXACTLY_PRECISELY)
# Conflicts: # docs/booking/05-troubleshooting-and-changelog.md
…event seats, and a class that must actually be scheduled CodeRabbit's first review of #1331. The approval gate normalised only one side of its comparison. `fetchEventData` handed the validator one requested slot per stored row, so expanding only the existing side would have turned "1 vs 2" into "2 vs 1" for the same legacy 60-minute booking. Both sides are atom COVERAGE now, through a new `halfHourAtomStarts` mirror of `countHalfHourAtoms`, on the consultation and subscription arms alike. The webinar and class webhook fallbacks record their participant rows HELD. Born CONFIRMED they outlived their own guard: `confirmExistingAppointment` runs immediately after and its B2 CAS refuses a capture landing on a cancelled event, but this transaction commits either way — a confirmed seat on a dead event Phase 2 has already refunded. On a live event the same CAS promotes them in the same transaction. `createClass` refuses a class whose sessions carry no slots, not just one with no session rows. Connecting a buyer to a slotless session enrolled them in a class with no time on the calendar and still recorded a paid seat. The class-plan POST validates `classContents` before mapping it: `body` is untyped JSON and nothing required the field, so omitting it threw inside the mapper and answered 500 to a malformed request. Tests: the legacy-60-minute allocation case asserts success rather than the absence of one error string, and the refused-capture case pins the seat row as HELD with no promotion. Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
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CodeRabbit review 1 — triageEvery claim was re-checked against the code as it stands after two restacks and the
Nothing needed a money or design decision, so nothing was deferred to the owner. Verification — This push also merges |
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…ngelog pre-carries PR 9's section Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
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…changelog pre-carries PR 8's section Part of #1319 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MgadJydWEKkdhhzY58yiL7
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What
Appointment row shape (wave-5 PR 12 of #1319). A booked session is N × 30-minute
SlotOfAppointmentatoms forming one contiguous run (ADR B1 / #1071); every reader that matters is run-aware, but four writers were not. A prod audit found 76 of 87 consultations stored as a single 60-minute row, four of them from August 2026.createConsultationminted one oversized row and connected only the consultee. That row violated the atom invariant and was invisible to the consultant-scoped conflict filter (user.some.id), so the allocator could double-book on top of a paid session. It now builds the same atoms checkout builds, through one shared helper (buildContiguousSlotAtomsForWindowinlib/appointments/contiguous-slot-run.ts), connects both parties, and asserts a single contiguous live run inside the transaction.createClasswrote one tentative seat row spanning the whole scheduling period (months) with no consultant;createWebinarduplicated the master slot per attendee without a consultant;createSubscription's seat branch could only throw at runtime (nostartsAt/endsAt, hidden by a cast). Each now produces exactly what its checkout counterpart produces: webinar and class attendees are connected to the event's existing session slots vialib/appointments/attendee-seats.ts, an unscheduled event is refused (ascreateWebinaralready did), and subscriptions get the same slotless placeholder checkout writes. Consequence, deliberate: Legacy-shape capture on a terminal event commits ghost confirmed slots before the refund decision (CodeRabbit HOIf) #1202's "tentative birth" has no creator left because no rows are born; a capture on a terminal event still hits the B2 CAS inconfirmExistingAppointmentand refunds, leaving only a connection to the host's own slots.groupSlotsIntoRuns, which also drops dead slots.No data repair: the pre-MVP reset replaces the existing rows.
Verification
Cold
tscclean; eslint zero new findings; full jest 344 suites / 3,775 tests green. One new suite pins that the webhook creator and checkout produce identical atom sets for a two-hour session and connect both users.Restack notes
Commit 1 is prettier-only on the six touched files (already dirty on
dev); drop it on restack and re-run prettier.lib/payments/webhooks/handlers.tsconflicts with #1322 insidecreateConsultation(take this branch's atom builder, re-add #1322's participant writer afterappointment.create);createWebinar/createClasswill conflict the same way if #1322 writes participants there.Part of #1319.
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