Merge branch 'feat/api-v2-checkin-accounts'

- v2: auth/signup, auth/login (+ code step, rate limited), PATCH /me; check-in look-up and
  scan returning an outcome for every normal result. Campus rule as v1.
- Sign up/login/2FA/profile moved to src/services/auth.ts; scan preview and scan to
  src/services/checkin.ts. v1 answers unchanged (ServiceError v1Status).
- Login, 2FA step, sign up and profile/password pages use v2.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ls1vMdg2GYqbnKZmPaX1ot

CHANGELOG.md

@@ -7,6 +7,53 @@ and this project follows [Semantic Versioning](https://semver.org/).
 
 ## [Unreleased]
 
+## [1.51.2] - 2026-10-29
+
+### Added
+
+- **API v2 accounts:** `POST /auth/signup` (needs `acceptTerms`), `POST /auth/login` (answers
+  `signed_in` with a token, or `code_required` for two-factor) and `POST /auth/login/code`, both
+  behind the login rate limit; `PATCH /me` (only what is sent changes; a new password needs the
+  current one) and `GET /me` now with `notificationPreference` and `homeCampusId`.
+- **API v2 check-in:** `GET /checkin/{qrCode}` (look up: holder, what's left, session, consent)
+  and `POST /checkin/{qrCode}` (check in everyone left or `people`). Every normal result is a 200
+  with an `outcome` — `checked_in`, `already_used`, `consent_required`, `wrong_event`,
+  `wrong_section`, `section_not_found`, `no_session`, `locked`, `transferred`. Staff only, with the
+  same campus rule as v1.
+- **Services:** sign up, log in, the 2FA step and profile changes moved from `userController.js`
+  (~430 lines shorter) to `src/services/auth.ts`; scan preview and scanning from
+  `ticketController.js` to `src/services/checkin.ts`. v1 answers exactly as before (`ServiceError`
+  can carry the old `v1Status`, e.g. 400 for a wrong password, which is 401 in v2).
+- v2 routes can take extra middleware (`middleware: [loginLimiter]`).
+
+### Changed
+
+- Logging in (and the 2FA code step), signing up, and changing your details or password use API v2.
+  The scanner stays on v1 until 1.51.3.
+
+## [1.51.1] - 2026-10-29
+
+### Added
+
+- **API v2 registrations and payments:** `POST /registrations` (signed in, guest for free
+  events, or a waitlist link), `GET /registrations/{id}`, `POST /registrations/{id}/cancel` and
+  `POST /registrations/{id}/checkout` (online payment, with an optional donation; answers
+  `priceUpdated` with the new balance when an early-bird price ran out). Owners only (admins too);
+  someone else's registration is `NOT_FOUND`.
+- **Services in TypeScript:** making and cancelling registrations moved from
+  `registrationController.js` to `src/services/registrations.ts`, and paying a registration
+  online from `paymentController.js` to `src/services/payments.ts`. v1 and v2 run the same code;
+  `ServiceError` carries the HTTP status. `registrationController.js` is ~560 lines shorter.
+- **Typed frontend calls:** `npm run api:types` (repo root) writes the OpenAPI document to
+  `frontend/src/lib/api-v2/openapi.json` and generates `schema.d.ts` from it (openapi-typescript);
+  `apiV2(method, path, { params, query, body, authToken })` in `frontend/src/lib/apiV2.ts` checks
+  the path, parameters, body and answer. A backend test fails while the saved document is stale.
+
+### Changed
+
+- The register page, "Pay now" (registration success page and My Events) and cancelling on My
+  Events use API v2. `apiFetch` reads v2 errors (`error.message`, with `code`/`fields` in `data`).
+
 ## [1.51.0] - 2026-10-29
 
 ### Added

FEATURES.md

@@ -890,7 +890,10 @@ can't start, the same jobs run on in-process timers.
   set.
 - Unhandled promise rejections are logged and don't crash the server.
 - Backend status page (`/`) and built-in API docs page (`/docs`); **API v2** (`/api/v2`, 1.51.0)
-  with one error shape, paged lists and an OpenAPI 3.1 reference at `/docs/v2` (admins).
+  with one error shape, paged lists and an OpenAPI 3.1 reference at `/docs/v2` (admins). Public
+  events, my account and registrations, registering, cancelling and paying online (1.51.1),
+  signing up, logging in (with the 2FA step), changing my details and checking tickets in (1.51.2);
+  the frontend's v2 calls are typed from the OpenAPI document.
 - **TypeScript backend** (1.51.0): `.ts` files are checked strictly, `.js` compiles as it is;
   deploys build `dist/`, which `src/index.js` runs.
 - **Tests** — Jest unit tests in `backend/tests` (`npm test`), and Playwright

WHATS-NEW.md

@@ -12,6 +12,16 @@ Write for church admins, not developers: no environment variables, endpoints or
 developer log is CHANGELOG.md. A tagged version without a section here shows "No details given".
 -->
 
+## 1.51.2
+
+- **More groundwork for 2.0.** Logging in, signing up and changing your details now run on the
+  new version of the server's connection to the app. They work just as before.
+
+## 1.51.1
+
+- **More groundwork for 2.0.** Registering, paying online and cancelling now run on the new
+  version of the server's connection to the app. They work just as before.
+
 ## 1.51.0
 
 - **Groundwork for Cross Events 2.0.** Behind the scenes, the server is moving to a newer, safer

backend/API_DOCUMENTATION.md

@@ -6,7 +6,8 @@ Full interactive docs (with request/response examples) are available at `GET /do
 > (admin token), the document at `GET /api/v2/openapi.json` (admin). It is generated from the route
 > declarations, so it is not repeated here. v2 responses are `{ data }` (lists add
 > `meta: { page, limit, total, pages }`, `?page=&limit=` up to 100) and errors
-> `{ error: { code, message, fields? } }`. This file documents v1 (`/api/…`), which stays until 2.0.
+> `{ error: { code, message, fields? } }`. This file documents v1 (`/api/…`), which stays until 2.0. The frontend calls v2 through the typed
+> `apiV2()` helper (`frontend/src/lib/apiV2.ts`, types regenerated with `npm run api:types`).
 
 All authenticated requests require:
 ```

backend/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "event-management-backend",
-  "version": "1.51.0",
+  "version": "1.51.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "event-management-backend",
-      "version": "1.51.0",
+      "version": "1.51.2",
       "hasInstallScript": true,
       "dependencies": {
         "@prisma/adapter-pg": "^7.10.1",

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "event-management-backend",
-  "version": "1.51.0",
+  "version": "1.51.2",
   "description": "Event Management System Backend",
   "main": "src/index.js",
   "scripts": {
@@ -16,7 +16,8 @@
     "migrate:env-to-db:dry": "node scripts/migrate-env-to-db.js --dry-run",
     "set-demo": "node scripts/set-demo.js",
     "build": "tsc -p tsconfig.json && node -e \"require('fs').writeFileSync('dist/build.json', JSON.stringify({ version: require('./package.json').version, builtAt: new Date().toISOString() }))\"",
-    "typecheck": "tsc -p tsconfig.json --noEmit"
+    "typecheck": "tsc -p tsconfig.json --noEmit",
+    "openapi": "tsx scripts/openapi.ts"
   },
   "dependencies": {
     "@prisma/adapter-pg": "^7.10.1",

backend/scripts/openapi.ts

@@ -0,0 +1,22 @@
+/**
+ * Writes the /api/v2 OpenAPI document to frontend/src/lib/api-v2/openapi.json, from which the
+ * frontend's types are generated (`npm run api:types` in the repo root does both). Run it after
+ * adding or changing a v2 route; tests/v2.test.ts fails while the saved copy is out of date.
+ */
+import 'dotenv/config';
+import fs from 'fs';
+import path from 'path';
+import { buildOpenApi } from '../src/v2/openapi';
+import '../src/v2';
+
+export const OPENAPI_FILE = path.join(__dirname, '..', '..', 'frontend', 'src', 'lib', 'api-v2', 'openapi.json');
+
+// The version is left out so a release bump doesn't change the file.
+export const currentDocument = () => JSON.stringify(buildOpenApi({ version: 'v2' }), null, 2) + '\n';
+
+if (require.main === module) {
+  fs.mkdirSync(path.dirname(OPENAPI_FILE), { recursive: true });
+  fs.writeFileSync(OPENAPI_FILE, currentDocument());
+  console.log(`Wrote ${path.relative(process.cwd(), OPENAPI_FILE)}`);
+  process.exit(0);
+}

backend/src/controllers/paymentController.js

@@ -6,7 +6,6 @@ const { computeDonationRemaining } = require('../utils/donationUtils');
 const { logAdminAction } = require('../utils/adminAudit');
 const { getClientIp } = require('../utils/requestUtils');
 const payments = require('../payments');
-const { createRegistrationCheckout } = require('../payments/checkouts');
 const { emailTickets } = require('./ticketController');
 const { safeErrorMessage } = require('../utils/errorUtils');
 const { assertEventOpen, assertRegistrationEventOpen } = require('../utils/cashupUtils');
@@ -941,54 +940,14 @@ const createCheckout = async (req, res) => {
       throw new Error('Either registrationId or eventId is required');
     }
 
-    // A registration's balance
+    // A registration's balance (shared with POST /api/v2/registrations/:id/checkout)
     if (registrationId) {
-      const reg = await prisma.registration.findUnique({ where: { id: registrationId }, select: { userId: true, eventId: true, event: { select: { endDate: true } } } });
-      if (!reg) { res.status(404); throw new Error('Registration not found'); }
-      if (reg.userId !== userId && req.user.role !== 'admin' && req.user.role !== 'supervisor') {
-        res.status(403); throw new Error('Not authorized to create checkout for this registration');
-      }
-      // If event is in the past, block self-service payment (mirrors the registration-edit block)
-      if (req.user.role !== 'admin' && req.user.role !== 'supervisor' && reg.event?.endDate && new Date(reg.event.endDate).getTime() < Date.now()) {
-        res.status(400); throw new Error('This event has already ended; payment can no longer be made for this registration');
-      }
-      await assertEventOpen(reg.eventId, res);
-
-      // Refresh early-bird pricing — updates priceSnapshot if any tier has expired or sold out.
-      // Must run before the balance is worked out so the checkout charges the right price.
-      const { changed: priceChanged } = await refreshPricingForRegistration(registrationId);
-      if (priceChanged) {
-        const freshReg = await prisma.registration.findUnique({
-          where: { id: registrationId },
-          include: {
-            registrationOptions: { include: { eventOption: { include: { earlyBirdTiers: true } }, tranches: true } },
-            payments: true
-          }
-        });
-        const newTotal = computeRegistrationTotalDue(freshReg, new Date());
-        const totalPaid = (freshReg.payments || []).reduce((s, p) => s + p.amount, 0);
-        return res.status(200).json({
-          priceUpdated: true,
-          newTotal: Math.max(0, newTotal - totalPaid),
-          message: 'One or more early-bird prices have changed since your registration was created. Please review the updated total before proceeding.'
-        });
-      }
-
-      // Part of the balance (supervisor payments page)
-      if (amount && !isNaN(parseFloat(amount))) {
-        const result = await createRegistrationCheckout(registrationId, userId, { successUrl, cancelUrl, failureUrl, amount: parseFloat(amount), provider });
-        return res.status(200).json(result);
-      }
-
-      // Optional donation added at registration ("Donation amount" on the register form)
-      let donation = 0;
-      if (donationAmount !== undefined && donationAmount !== null && donationAmount !== '') {
-        donation = Math.round(parseFloat(donationAmount) * 100) / 100;
-        if (!(donation >= 0) || donation > 100000) { res.status(400); throw new Error('Invalid donation amount'); }
-        if (donation > 0 && donation < payments.MIN_ONLINE_AMOUNT) { res.status(400); throw new Error(`Minimum donation is R${payments.MIN_ONLINE_AMOUNT}`); }
-      }
-
-      const result = await createRegistrationCheckout(registrationId, userId, { successUrl, cancelUrl, failureUrl, donationAmount: donation, provider });
+      const { startRegistrationCheckout } = require('../services/payments');
+      const result = await startRegistrationCheckout(registrationId, req.user, {
+        amount: amount && !isNaN(parseFloat(amount)) ? parseFloat(amount) : null,
+        donationAmount: donationAmount === undefined || donationAmount === null || donationAmount === '' ? null : parseFloat(donationAmount),
+        successUrl, cancelUrl, failureUrl, provider,
+      });
       return res.status(200).json(result);
     }
 

backend/src/controllers/registrationController.js

@@ -3,534 +3,33 @@ const { v4: uuidv4 } = require('uuid');
 const { generateTicketsForRegistration } = require('../utils/ticketUtils');
 const { emailTickets } = require('./ticketController');
 const { hashPassword } = require('../config/auth');
-const { resolveOptionPrice, resolveVariantTierPrice, computeRegistrationTotalDue, refreshPricingForRegistration, attachComputedTotals, attachComputedTotalsToList } = require('../utils/pricing');
+const { computeRegistrationTotalDue, refreshPricingForRegistration, attachComputedTotals, attachComputedTotalsToList } = require('../utils/pricing');
 const { assertEventOpen } = require('../utils/cashupUtils');
 const { logAdminAction } = require('../utils/adminAudit');
 const { getClientIp } = require('../utils/requestUtils');
-const { buildCouponLines, previewCoupon, applyCouponToRegistration, recalculateRegistrationDiscount, releaseRegistrationCoupons, describeCoupon } = require('../utils/coupons');
-const { lineKey, validateAttendees, createAttendees, namedPlacesByKey } = require('../utils/attendees');
+const { previewCoupon, applyCouponToRegistration, recalculateRegistrationDiscount, releaseRegistrationCoupons, describeCoupon } = require('../utils/coupons');
+const { validateAttendees, createAttendees, namedPlacesByKey } = require('../utils/attendees');
 const { findAccountByContact } = require('../utils/accountMatch');
-const { ensureConsentRequests } = require('../utils/consent');
-const { takenCount } = require('../utils/stock');
-const { findOfferByToken, queueWaitlist } = require('../utils/waitlist');
+const { queueWaitlist } = require('../utils/waitlist');
 const { reservedOptionIds } = require('../utils/volunteers');
 
-// Youth events: send parental consent requests for any new under-18 attendees. Runs in
-// the background so a slow mail/WhatsApp send never holds up the registration.
-function queueConsentRequests(registrationId) {
-  ensureConsentRequests(registrationId).catch(e => console.error('[consent] Failed to send requests:', e?.message || e));
-}
-
-// Named attendees for API responses, with whether their ticket has been issued/used.
-const ATTENDEES_INCLUDE = {
-  orderBy: { order: 'asc' },
-  include: {
-    ticket: { select: { id: true, isUsed: true } },
-    // Latest consent request (youth events) — it decides check-in.
-    consentRequests: { orderBy: { createdAt: 'desc' }, take: 1, select: { id: true, status: true, respondedAt: true, lastSentAt: true, textVersion: true } },
-  },
-};
-
-const TICKET_DELIVERY = ['payer', 'each'];
-
-/**
- * Places each line will have once `requested` is added to `existingLines` — used to
- * check attendee names against what's actually being bought.
- */
-function placesAfter(existingLines, requested) {
-  const out = {};
-  // Picked-session lines take no attendee names.
-  for (const l of [...(existingLines || []), ...(requested || [])].filter(x => !x.sessionId)) {
-    const k = lineKey(l.eventOptionId, l.variantId);
-    out[k] = (out[k] || 0) + Number(l.quantity || 0);
-  }
-  return out;
-}
-
-// Active coupon on a registration, for API responses (the discount itself is
-// Registration.discountTotal).
-const ACTIVE_COUPONS_INCLUDE = {
-  where: { releasedAt: null },
-  select: { id: true, discountAmount: true, createdAt: true, coupon: { select: { id: true, code: true, type: true, value: true, description: true } } },
-};
+// Shared with POST /api/v2/registrations: the registration service (TypeScript, 1.51.1).
+const registrationService = require('../services/registrations');
+const {
+  queueConsentRequests, ATTENDEES_INCLUDE, TICKET_DELIVERY, placesAfter, ACTIVE_COUPONS_INCLUDE,
+  pendingCouponLines, priceRequestedOption, checkOptionStock, checkVariantStock, isStaffRole,
+} = registrationService;
 const { BUNDLE_APPS_INCLUDE } = require('../utils/bundles');
-const { registrationClosesAt, wholeCourseClosesAt, expandPickLines, assertSessionCapacity, isPickOption, mergeSessionIds } = require('../utils/sessions');
-
-/**
- * Coupon lines for options that haven't been saved yet, so a code can be checked
- * before anything is created. Mirrors buildCouponLines for one tranche per option.
- */
-function pendingCouponLines(event, resolvedOptions) {
-  return buildCouponLines({
-    registrationOptions: resolvedOptions.map(o => ({
-      eventOptionId: o.eventOptionId,
-      variantId: o.variantId || null,
-      quantity: o.quantity,
-      eventOption: event.eventOptions.find(eo => eo.id === o.eventOptionId),
-      tranches: [{ quantity: o.quantity, priceSnapshot: o.priceSnapshot, appliedTierId: o.appliedTierId }],
-    })),
-  });
-}
-
-/**
- * Price one requested option for this buyer: early-bird tiers, then variant/option price,
- * then the staff price for Staff and above. Returns { priceSnapshot, appliedTierId }.
- */
-async function priceRequestedOption(eventOption, variantId, qty, buyer) {
-  try {
-    const resolved = variantId
-      ? await resolveVariantTierPrice(eventOption, variantId, qty, buyer)
-      : await resolveOptionPrice(eventOption, qty, buyer);
-    return { priceSnapshot: resolved.price, appliedTierId: resolved.tierId };
-  } catch (e) {
-    const variant = variantId ? (eventOption.variants || []).find(v => v.id === variantId) : null;
-    const price = variant && variant.price !== null && variant.price !== undefined ? variant.price : eventOption.price;
-    return { priceSnapshot: Number(price || 0), appliedTierId: null };
-  }
-}
-
-/**
- * Check overall stock availability for an EventOption. Places held for live waitlist
- * offers count as taken, except the offer being claimed (`excludeEntryId`).
- * Returns { available: boolean, remaining: number|null }
- */
-async function checkOptionStock(option, requestedQty, excludeEntryId = null, sessionId = null) {
-  if (!option.stockLimit || option.stockLimit === 0) return { available: true, remaining: null };
-  const remaining = option.stockLimit - await takenCount({ eventOptionId: option.id, sessionId }, { excludeEntryId });
-  return { available: remaining >= requestedQty, remaining };
-}
-
-/**
- * Check stock availability for a specific variant (same rules as checkOptionStock).
- */
-async function checkVariantStock(variant, requestedQty, excludeEntryId = null, sessionId = null) {
-  if (!variant.stockLimit || variant.stockLimit === 0) return { available: true, remaining: null };
-  const remaining = variant.stockLimit - await takenCount({ eventOptionId: variant.eventOptionId, variantId: variant.id, sessionId }, { excludeEntryId });
-  return { available: remaining >= requestedQty, remaining };
-}
+const { expandPickLines, assertSessionCapacity, isPickOption, mergeSessionIds } = require('../utils/sessions');
 
 // @desc    Create a new registration
 // @route   POST /api/registrations
 // @access  Private
 const createRegistration = async (req, res) => {
   try {
-    const { eventId, options, guestName, guestEmail, guestPhone, couponCode, attendees, ticketDelivery, waitlistToken, analyticsSessionId } = req.body;
-
-    // Check if event exists
-    const canIncludeVariants = !!(prisma && prisma.optionVariant && typeof prisma.optionVariant.findMany === 'function');
-    const canIncludeTiers = !!(prisma && prisma.earlyBirdTier && typeof prisma.earlyBirdTier.findMany === 'function');
-    const optionInclude = canIncludeTiers
-      ? { earlyBirdTiers: true, ...(canIncludeVariants ? { variants: true } : {}) }
-      : true;
-    const event = await prisma.event.findUnique({
-      where: { id: eventId },
-      include: { eventOptions: optionInclude ? { include: optionInclude } : true, sessions: true }
-    });
-
-    if (!event) {
-      res.status(404);
-      throw new Error('Event not found');
-    }
-
-    if (!event.isActive) {
-      res.status(400);
-      throw new Error('Event is not active');
-    }
-
-    if (event.cashupStatus === 'closed') {
-      res.status(400);
-      throw new Error('This event is closed and no longer accepting registrations.');
-    }
-
-    // A waitlist claim link: its token identifies the person and releases the places
-    // held for them. It works without logging in, the same way a consent link does.
-    let waitlistOffer = null;
-    if (waitlistToken) {
-      waitlistOffer = await findOfferByToken(waitlistToken);
-      if (!waitlistOffer || waitlistOffer.eventId !== eventId) { res.status(400); throw new Error('This waitlist link is not valid.'); }
-      if (waitlistOffer.status !== 'offered') { res.status(400); throw new Error(`This waitlist offer has ${waitlistOffer.status === 'claimed' ? 'already been used' : 'expired'}.`); }
-      if (new Date(waitlistOffer.offerExpiresAt) < new Date()) { res.status(400); throw new Error('This waitlist offer has expired.'); }
-      if (req.user && req.user.id !== waitlistOffer.userId) { res.status(403); throw new Error('This waitlist offer belongs to someone else.'); }
-    }
-
-    // Enforce auth unless event explicitly opts out
-    const eventRequiresAuth = event.requiresAuth !== false;
-    if (eventRequiresAuth && !req.user && !waitlistOffer) {
-      res.status(401);
-      throw new Error('Authentication required for this event');
-    }
-
-    // Unauthenticated guest registration is only permitted for free events
-    if (!req.user && !waitlistOffer) {
-      const totalDueCheck = (event.eventOptions || []).reduce((sum, eo) => sum + (eo.price || 0), 0);
-      // Also check against the requested options specifically
-      const requestedTotal = (options || []).reduce((sum, opt) => {
-        const eo = event.eventOptions.find(o => o.id === opt.eventOptionId);
-        return sum + ((eo?.price || 0) * (opt.quantity || 1));
-      }, 0);
-      if (requestedTotal > 0) {
-        res.status(400);
-        throw new Error('Guest registration is only available for free events. Please create an account to pay for tickets.');
-      }
-    }
-
-    // Resolve userId — authenticated or guest
-    let userId;
-    if (req.user) {
-      userId = req.user.id;
-    } else if (waitlistOffer) {
-      userId = waitlistOffer.userId;
-    } else {
-      // Guest registration: find existing user by email or create inactive placeholder
-      if (!guestEmail || !guestName) {
-        res.status(400);
-        throw new Error('Name and email are required for unauthenticated registration');
-      }
-      const match = await findAccountByContact({ email: guestEmail, phone: guestPhone });
-      if (match.conflict) {
-        res.status(409);
-        throw new Error('This email and phone number belong to two different accounts. Please log in, or check your details.');
-      }
-      const existingGuest = match.user;
-      if (existingGuest) {
-        userId = existingGuest.id;
-      } else {
-        const newGuest = await prisma.user.create({
-          data: {
-            id: uuidv4(),
-            name: guestName,
-            email: guestEmail,
-            password: '',
-            phoneNumber: guestPhone || null,
-            isActive: false,
-            updatedAt: new Date(),
-          }
-        });
-        userId = newGuest.id;
-      }
-    }
-
-    // Enforce registration cutoff for public registrations (multi-day events close when
-    // the first session starts, or later with late joining — see utils/sessions.js).
-    const now = new Date();
-    if (now >= registrationClosesAt(event, event.sessions)) {
-      res.status(400);
-      throw new Error('Registration is closed for this event');
-    }
-
-    // Validate options
-    if (!options || !Array.isArray(options) || options.length === 0) {
-      res.status(400);
-      throw new Error('At least one option must be selected');
-    }
-
-    // "Pick sessions" options become one line per chosen session; whole-course tickets
-    // on such an event still close when the whole course does.
-    const lines = expandPickLines(event, options, { now });
-    // (An all-sessions ticket with sessions ticked is checked per session instead.)
-    if (event.attendanceMode === 'pick' && lines.some(l => !l.sessionId && !l.sessionIds?.length) && now >= wholeCourseClosesAt(event, event.sessions)) {
-      res.status(400);
-      throw new Error('Whole-course tickets are no longer on sale — choose the sessions you want instead.');
-    }
-    await assertSessionCapacity(event, lines, undefined, { excludeEntryId: waitlistOffer?.id });
-
-    // Validate each option and resolve prices / check stock.
-    // Options are independent of each other, so resolve them concurrently. Errors are marked
-    // with `.isStockError` rather than relying on shared `res.statusCode` (which would race
-    // across concurrent iterations) — the outer catch always responds 400 regardless.
-    // The kids check-in and volunteer tickets are handed out by staff, never sold.
-    const reserved = new Set(isStaffRole(req.user?.role) ? [] : reservedOptionIds(event));
-    const resolvedOptions = await Promise.all(lines.map(async (option) => {
-      const eventOption = event.eventOptions.find(eo => eo.id === option.eventOptionId);
-      if (!eventOption || reserved.has(eventOption.id)) {
-        throw new Error(`Option with ID ${option.eventOptionId} not found for this event`);
-      }
-      if (!option.quantity || option.quantity < 1) {
-        throw new Error('Quantity must be at least 1');
-      }
-
-      const qty = option.quantity;
-
-      // Check overall option stock
-      try {
-        const stockCheck = await checkOptionStock(eventOption, qty, waitlistOffer?.id, option.sessionId);
-        if (!stockCheck.available) {
-          const err = new Error(`"${eventOption.name}" is sold out or does not have enough stock (${stockCheck.remaining ?? 0} remaining).`);
-          err.isStockError = true;
-          throw err;
-        }
-      } catch (e) {
-        if (e.isStockError) throw e; // propagate stock errors
-        // If stock check function fails (pre-migration), continue without stock check
-      }
-
-      // Check variant stock (if a variant is selected)
-      let variantId = option.variantId || null;
-      let variantPrice = null;
-      if (variantId && canIncludeVariants) {
-        const variant = (eventOption.variants || []).find(v => v.id === variantId);
-        if (!variant) {
-          throw new Error(`Variant not found for option "${eventOption.name}"`);
-        }
-        try {
-          const vStock = await checkVariantStock(variant, qty, waitlistOffer?.id, option.sessionId);
-          if (!vStock.available) {
-            const err = new Error(`Variant "${variant.name}" is sold out (${vStock.remaining ?? 0} remaining).`);
-            err.isStockError = true;
-            throw err;
-          }
-        } catch (e) {
-          if (e.isStockError) throw e;
-        }
-        variantPrice = variant.price; // null = use option price
-      }
-
-      // Resolve price: variant-level tiers take priority, then option-level tiers, then
-      // base prices, then the staff price for Staff and above.
-      let priceSnapshot = null;
-      let appliedTierId = null;
-      if (canIncludeTiers) {
-        const buyer = req.user || (waitlistOffer ? await prisma.user.findUnique({ where: { id: waitlistOffer.userId }, select: { id: true, role: true } }) : null);
-        ({ priceSnapshot, appliedTierId } = await priceRequestedOption(eventOption, variantId, qty, buyer));
-      } else {
-        priceSnapshot = variantPrice !== null && variantPrice !== undefined ? variantPrice : null;
-      }
-      if (priceSnapshot === null) priceSnapshot = eventOption.price;
-
-      return { ...option, variantId, appliedTierId, priceSnapshot };
-    }));
-
-    // Check a coupon code before anything is saved, so a bad code doesn't leave a
-    // half-made registration behind. It's applied (and re-checked under a lock) below.
-    if (couponCode) {
-      const buyer = req.user ? { id: req.user.id, role: req.user.role, email: req.user.email } : null;
-      await previewCoupon({ code: couponCode, eventId, user: buyer, lines: pendingCouponLines(event, resolvedOptions) });
-    }
-
-    // Check for existing non-cancelled registration for this user+event → merge instead
-    const existingReg = await prisma.registration.findFirst({
-      where: { userId, eventId, status: { not: 'cancelled' } },
-      include: { registrationOptions: true }
-    });
-
-    // Attendee names are checked against the places the registration will have after
-    // this purchase, counting names already given on an existing registration.
-    const cleanAttendees = validateAttendees(
-      event,
-      placesAfter(existingReg?.registrationOptions, resolvedOptions),
-      attendees,
-      existingReg ? await namedPlacesByKey(existingReg.id) : {}
-    );
-    if (ticketDelivery !== undefined && !TICKET_DELIVERY.includes(ticketDelivery)) {
-      res.status(400);
-      throw new Error("ticketDelivery must be 'payer' or 'each'");
-    }
-
-    let registration;
-    let isNewRegistration = false;
-    if (existingReg) {
-      // Merge: add a new price tranche per requested option into the existing registration.
-      // Never overwrite an existing row's priceSnapshot/quantity in place — that would blend
-      // tickets bought at different early-bird prices into a single (wrong) price. Each
-      // purchase gets its own tranche; the RegistrationOption row stays a maintained aggregate.
-      for (const opt of resolvedOptions) {
-        // Match on eventOptionId + variantId (+ session, for picked sessions) for correct row
-        const existing = existingReg.registrationOptions.find(
-          ro => ro.eventOptionId === opt.eventOptionId && (ro.variantId || null) === (opt.variantId || null) && (ro.sessionId || null) === (opt.sessionId || null)
-        );
-        if (existing) {
-          await prisma.$transaction([
-            prisma.registrationOptionTranche.create({
-              data: {
-                id: uuidv4(),
-                registrationOptionId: existing.id,
-                quantity: opt.quantity,
-                priceSnapshot: opt.priceSnapshot,
-                appliedTierId: opt.appliedTierId || null,
-              }
-            }),
-            prisma.registrationOption.update({
-              where: { id: existing.id },
-              data: { quantity: existing.quantity + opt.quantity, priceSnapshot: opt.priceSnapshot, appliedTierId: opt.appliedTierId || null, ...(existing.sessionId ? {} : { sessionIds: mergeSessionIds(existing.sessionIds, opt.sessionIds) }) }
-            })
-          ]);
-        } else {
-          await prisma.registrationOption.create({
-            data: {
-              id: uuidv4(),
-              registrationId: existingReg.id,
-              eventOptionId: opt.eventOptionId,
-              quantity: opt.quantity,
-              variantId: opt.variantId || null,
-              sessionId: opt.sessionId || null,
-              sessionIds: opt.sessionIds || [],
-              appliedTierId: opt.appliedTierId || null,
-              priceSnapshot: opt.priceSnapshot,
-              tranches: {
-                create: [{
-                  id: uuidv4(),
-                  quantity: opt.quantity,
-                  priceSnapshot: opt.priceSnapshot,
-                  appliedTierId: opt.appliedTierId || null,
-                }]
-              }
-            }
-          });
-        }
-      }
-      // Only downgrade from paid if the newly added items actually cost something
-      const newItemsCost = resolvedOptions.reduce((sum, opt) => {
-        return sum + ((opt.priceSnapshot || 0) * (opt.quantity || 0));
-      }, 0);
-      if (existingReg.status === 'paid' && newItemsCost > 0) {
-        await prisma.registration.update({ where: { id: existingReg.id }, data: { status: 'partial_paid', updatedAt: new Date() } });
-      } else {
-        await prisma.registration.update({ where: { id: existingReg.id }, data: { updatedAt: new Date() } });
-      }
-      registration = await prisma.registration.findUnique({
-        where: { id: existingReg.id },
-        include: {
-          registrationOptions: { include: { eventOption: true, tranches: true } },
-          event: true,
-          user: { select: { id: true, name: true, email: true, phoneNumber: true } }
-        }
-      });
-    } else {
-      isNewRegistration = true;
-      // Create new registration
-      const registrationId = uuidv4();
-      registration = await prisma.registration.create({
-        data: {
-          id: registrationId,
-          userId,
-          eventId,
-          updatedAt: new Date(),
-          registrationOptions: {
-            create: resolvedOptions.map(option => ({
-              id: uuidv4(),
-              eventOptionId: option.eventOptionId,
-              quantity: option.quantity,
-              variantId: option.variantId || null,
-              sessionId: option.sessionId || null,
-              sessionIds: option.sessionIds || [],
-              appliedTierId: option.appliedTierId || null,
-              priceSnapshot: option.priceSnapshot,
-              tranches: {
-                create: [{
-                  id: uuidv4(),
-                  quantity: option.quantity,
-                  priceSnapshot: option.priceSnapshot,
-                  appliedTierId: option.appliedTierId || null,
-                }]
-              }
-            }))
-          }
-        },
-        include: {
-          registrationOptions: { include: { eventOption: true, tranches: true } },
-          event: true,
-          user: { select: { id: true, name: true, email: true, phoneNumber: true } }
-        }
-      });
-    }
-
-    if (cleanAttendees.length > 0) {
-      await createAttendees(registration.id, cleanAttendees);
-      queueConsentRequests(registration.id);
-    }
-    if (waitlistOffer) {
-      await prisma.waitlistEntry.update({
-        where: { id: waitlistOffer.id },
-        data: { status: 'claimed', claimedAt: new Date(), registrationId: registration.id, offerTokenHash: null },
-      });
-    }
-    if (ticketDelivery) {
-      await prisma.registration.update({ where: { id: registration.id }, data: { ticketDelivery } });
-    }
-
-    // Bundle deals, then the coupon (or re-work an existing one over the merged items).
-    let couponError = null;
-    const hasDiscount = (await recalculateRegistrationDiscount(registration.id)) > 0;
-    if (couponCode) {
-      try {
-        await applyCouponToRegistration({ registrationId: registration.id, code: couponCode });
-      } catch (e) {
-        // Lost a race for the last use since the check above — keep the registration.
-        if (!e.isCouponError) throw e;
-        couponError = e.message;
-      }
-    }
-    if (couponCode || hasDiscount || !isNewRegistration || cleanAttendees.length > 0 || ticketDelivery) {
-      registration = await prisma.registration.findUnique({
-        where: { id: registration.id },
-        include: {
-          registrationOptions: { include: { eventOption: true, tranches: true } },
-          event: true,
-          user: { select: { id: true, name: true, email: true, phoneNumber: true } },
-          couponRedemptions: ACTIVE_COUPONS_INCLUDE,
-
-          bundleApplications: BUNDLE_APPS_INCLUDE,
-          attendees: ATTENDEES_INCLUDE,
-        }
-      });
-    }
-
-    // If total due is zero, mark as paid and generate/update tickets if no required form
-    let freeTicketMockReq = null, freeTicketMockRes = null;
-    try {
-      const totalDue = computeRegistrationTotalDue(registration, new Date());
-      if (totalDue === 0) {
-        // Mark paid (no-op if already paid)
-        if (registration.status !== 'paid') {
-          await prisma.registration.update({ where: { id: registration.id }, data: { status: 'paid', updatedAt: new Date() } });
-        }
-        // check if event has a required form
-        let hasRequiredForm = false;
-        try {
-          const form = await prisma.eventForm.findUnique({ where: { eventId: registration.eventId } });
-          hasRequiredForm = !!(form && form.isRequired);
-        } catch {}
-        if (!hasRequiredForm) {
-          // Same generator as paid registrations: a ticket per named attendee, and one
-          // shared quantity ticket for the rest of each line.
-          await generateTicketsForRegistration(registration.id);
-          // Capture for chained email — tickets sent after registration confirmation
-          freeTicketMockReq = { user: { id: registration.userId }, body: { registrationId: registration.id } };
-          freeTicketMockRes = { status: () => freeTicketMockRes, json: () => {} };
-        }
-
-        // reflect status change in the returned object
-        registration.status = 'paid';
-      }
-    } catch (e) {
-      // ignore errors in auto-generation path; manual generation remains available
-    }
-
-    // Fire-and-forget: registration email first, then tickets (guarantees order)
-    const { sendRegistrationEmails, sendRegistrationUpdatedEmails } = require('../utils/notifications');
-    const _regId = registration.id;
-    const _freeTicketReq = freeTicketMockReq;
-    const _freeTicketRes = freeTicketMockRes;
-    (async () => {
-      try {
-        if (isNewRegistration) {
-          await sendRegistrationEmails(_regId);
-        } else {
-          await sendRegistrationUpdatedEmails(_regId);
-        }
-      } catch (e) { console.error('Failed to send registration emails:', e); }
-      if (_freeTicketReq) {
-        try { await emailTickets(_freeTicketReq, _freeTicketRes); } catch (e) { console.error('Error emailing tickets for free registration:', e); }
-      }
-    })();
-
-    // Funnel: this registration came from a tracked (cookie-consented) visit.
-    if (analyticsSessionId) {
-      const { recordSubmit } = require('../utils/analytics');
-      recordSubmit(registration, analyticsSessionId).catch(e => console.warn('[analytics] submit not recorded:', e?.message || e));
-    }
-
-    res.status(201).json({ ...attachComputedTotals(registration), ...(couponError ? { couponError } : {}) });
+    const actor = req.user ? { id: req.user.id, role: req.user.role, email: req.user.email } : null;
+    const { registration, couponError } = await registrationService.createRegistration(req.body || {}, actor);
+    res.status(201).json({ ...registration, ...(couponError ? { couponError } : {}) });
   } catch (error) {
     res.status(400).json({ message: error.message });
   }
@@ -827,71 +326,7 @@ const updateRegistrationStatus = async (req, res) => {
 // @access  Private
 const cancelRegistration = async (req, res) => {
   try {
-    const registration = await prisma.registration.findUnique({
-      where: { id: req.params.id },
-      include: { event: { select: { endDate: true } } }
-    });
-
-    if (!registration) {
-      res.status(404);
-      throw new Error('Registration not found');
-    }
-
-    // Check if user is authorized to cancel this registration
-    if (registration.userId !== req.user.id && req.user.role !== 'admin') {
-      res.status(403);
-      throw new Error('Not authorized to cancel this registration');
-    }
-
-    // If event is in the past, block self-cancellation (mirrors the edit-block above)
-    if (req.user.role !== 'admin' && registration.event?.endDate && new Date(registration.event.endDate).getTime() < Date.now()) {
-      res.status(400);
-      throw new Error('This event has already ended; registration can no longer be cancelled');
-    }
-
-    await assertEventOpen(registration.eventId, res);
-
-    // Check if registration can be cancelled
-    if (registration.status === 'cancelled') {
-      res.status(400);
-      throw new Error('Registration is already cancelled');
-    }
-
-    // Non-admins cannot cancel a registration that has payments against it
-    if (req.user.role !== 'admin') {
-      const paymentCount = await prisma.payment.count({
-        where: { registrationId: registration.id, amount: { gt: 0 } }
-      });
-      if (paymentCount > 0) {
-        res.status(403);
-        throw new Error('This registration has payments recorded against it and cannot be self-cancelled. Please contact the organisation for assistance.');
-      }
-    }
-
-    const updatedRegistration = await prisma.registration.update({
-      where: { id: req.params.id },
-      data: {
-        status: 'cancelled',
-        updatedAt: new Date()
-      }
-    });
-    await releaseRegistrationCoupons(req.params.id);
-    queueWaitlist(registration.eventId);
-
-    // Only log when staff cancels on someone else's behalf — a routine self-service
-    // cancellation isn't an admin action worth cluttering the audit trail with.
-    if (registration.userId !== req.user.id) {
-      logAdminAction({
-        actorId: req.user.id,
-        actorRole: req.user.role,
-        action: 'registration_cancelled',
-        targetType: 'Registration',
-        targetId: req.params.id,
-        metadata: { registrationOwnerId: registration.userId },
-        ip: getClientIp(req),
-      });
-    }
-
+    const updatedRegistration = await registrationService.cancelRegistration(req.params.id, req.user, getClientIp(req));
     res.json({ message: 'Registration cancelled', registration: updatedRegistration });
   } catch (error) {
     res.status(400).json({ message: error.message });
@@ -2153,7 +1588,6 @@ async function syncStatusAfterDiscount(registrationId) {
   return status;
 }
 
-const isStaffRole = (role) => ['admin', 'supervisor', 'staff'].includes(role);
 
 // @desc    Apply a coupon code to an existing registration
 // @route   POST /api/registrations/:id/coupon

backend/src/controllers/ticketController.js

@@ -1,8 +1,9 @@
 const prisma = require('../config/db');
-const { v4: uuidv4 } = require('uuid');
 const { safeErrorMessage } = require('../utils/errorUtils');
 const { generateTicketsForRegistration } = require('../utils/ticketUtils');
 const { assertRegistrationEventOpen } = require('../utils/cashupUtils');
+// Scanning, shared with /api/v2/checkin (TypeScript, 1.51.2).
+const checkin = require('../services/checkin');
 
 // @desc    Generate tickets for a registration
 // @route   POST /api/tickets/generate
@@ -256,99 +257,11 @@ const getTicketByQrCode = async (req, res) => {
 // @access  Private/Staff
 const getScanPreview = async (req, res) => {
   try {
-    // Single JOIN query instead of 6 sequential Prisma round-trips (critical for remote DBs)
-    const rows = await prisma.$queryRaw`
-      SELECT
-        t.id,
-        t."qrCode",
-        t.quantity,
-        t."isUsed",
-        t."eventId",
-        ro.id                AS "registrationOptionId",
-        ro."sessionId"       AS "pinnedSessionId",
-        ro."sessionIds"      AS "chosenSessionIds",
-        eo.id                AS "eventOptionId",
-        eo.name              AS "eventOptionName",
-        ov.id                AS "variantId",
-        ov.name              AS "variantName",
-        e.id                 AS "evId",
-        e.title              AS "eventTitle",
-        e."scheduleType"     AS "scheduleType",
-        u.id                 AS "userId",
-        u.name               AS "userName",
-        a.name               AS "attendeeName",
-        COALESCE(
-          json_agg(
-            json_build_object(
-              'quantityRedeemed', tu."quantityRedeemed",
-              'scannedAt',        tu."scannedAt",
-              'sessionId',        tu."sessionId"
-            )
-          ) FILTER (WHERE tu.id IS NOT NULL),
-          '[]'::json
-        ) AS usages
-      FROM "Ticket" t
-      LEFT JOIN "RegistrationOption" ro ON ro.id = t."registrationOptionId"
-      LEFT JOIN "EventOption"        eo ON eo.id = ro."eventOptionId"
-      LEFT JOIN "OptionVariant"      ov ON ov.id = ro."variantId"
-      LEFT JOIN "Event"               e ON  e.id = t."eventId"
-      LEFT JOIN "User"                u ON  u.id = t."userId"
-      LEFT JOIN "Attendee"            a ON  a.id = t."attendeeId"
-      LEFT JOIN "TicketUsage"        tu ON tu."ticketId" = t.id
-      WHERE t."qrCode" = ${req.params.qrCode}
-      GROUP BY t.id, ro.id, eo.id, ov.id, e.id, u.id, a.id
-    `;
-
-    if (!rows || rows.length === 0) {
-      const { findTransferByOldCode, transferredMessage } = require('../utils/ticketTransfer');
-      const transfer = await findTransferByOldCode(req.params.qrCode);
-      if (transfer) return res.status(410).json({ message: transferredMessage(transfer), code: 'TICKET_TRANSFERRED' });
-      res.status(404);
-      throw new Error('Ticket not found');
-    }
-
-    const r = rows[0];
-    const { consentStatusForTickets } = require('../utils/consent');
-    const consentStatus = (await consentStatusForTickets([r.id])).get(r.id) || 'not_required';
-    const usages = r.usages || [];
-    // Multi-day events: check-in is per session, so what's left is counted for the
-    // session this scan is for (the one picked, or today's).
-    let remaining = Number(r.quantity) - usages.reduce((s, u) => s + (u.quantityRedeemed || 1), 0);
-    let session = null;
-    let sessionError = null;
-    if (r.scheduleType === 'sessions') {
-      const sessionsUtil = require('../utils/sessions');
-      const schedule = await sessionsUtil.eventSchedule(r.eventId);
-      const found = sessionsUtil.ticketScanSession(schedule, schedule.sessions, r.pinnedSessionId, req.query.sessionId || null, new Date(), r.chosenSessionIds);
-      sessionError = found.error;
-      if (found.session) {
-        session = { id: found.session.id, label: sessionsUtil.sessionLabel(found.session, schedule.sessions) };
-        remaining = Number(r.quantity) - sessionsUtil.redeemedForSession(usages, found.session.id);
-      } else {
-        remaining = 0;
-      }
-    }
-    res.json({
-      id:       r.id,
-      quantity: Number(r.quantity),
-      isUsed:   r.isUsed,
-      eventId:  r.eventId,
-      consentStatus,
-      remaining,
-      session,
-      sessionError,
-      registrationOption: {
-        id: r.registrationOptionId,
-        eventOption: { id: r.eventOptionId, name: r.eventOptionName },
-        variant: r.variantId ? { id: r.variantId, name: r.variantName } : null,
-      },
-      event:  { id: r.evId,   title: r.eventTitle },
-      user:   { id: r.userId, name:  r.userName   },
-      attendee: r.attendeeName ? { name: r.attendeeName } : null,
-      usages
-    });
+    const result = await checkin.previewScan(req.params.qrCode, { sessionId: req.query.sessionId || null });
+    if (result.outcome === 'transferred') return res.status(410).json({ message: result.message, code: 'TICKET_TRANSFERRED' });
+    res.json(result.ticket);
   } catch (error) {
-    res.status(res.statusCode === 200 ? 400 : res.statusCode).json({ message: safeErrorMessage(error) });
+    res.status(error.statusCode || (res.statusCode === 200 ? 400 : res.statusCode)).json({ message: safeErrorMessage(error) });
   }
 };
 
@@ -357,187 +270,19 @@ const getScanPreview = async (req, res) => {
 // @access  Private/Staff
 const scanTicket = async (req, res) => {
   try {
-    // Single JOIN query — avoids multiple sequential round-trips to the remote DB
-    const rows = await prisma.$queryRaw`
-      SELECT
-        t.id,
-        t.quantity,
-        t."isUsed",
-        t."eventId",
-        e.title              AS "eventTitle",
-        e."scheduleType"     AS "scheduleType",
-        ro."sessionId"       AS "pinnedSessionId",
-        ro."sessionIds"      AS "chosenSessionIds",
-        eo.id                AS "eventOptionId",
-        eo.name              AS "eventOptionName",
-        eo."isMainTicket"    AS "isMainTicket",
-        COALESCE(
-          json_agg(
-            json_build_object(
-              'id',               tu.id,
-              'quantityRedeemed', tu."quantityRedeemed",
-              'scannedAt',        tu."scannedAt",
-              'sessionId',        tu."sessionId"
-            )
-          ) FILTER (WHERE tu.id IS NOT NULL),
-          '[]'::json
-        ) AS usages
-      FROM "Ticket" t
-      LEFT JOIN "Event"              e  ON  e.id = t."eventId"
-      LEFT JOIN "RegistrationOption" ro ON ro.id = t."registrationOptionId"
-      LEFT JOIN "EventOption"        eo ON eo.id = ro."eventOptionId"
-      LEFT JOIN "TicketUsage"        tu ON tu."ticketId" = t.id
-      WHERE t."qrCode" = ${req.params.qrCode}
-      GROUP BY t.id, e.id, eo.id, ro.id
-    `;
-
-    if (!rows || rows.length === 0) {
-      const { findTransferByOldCode, transferredMessage } = require('../utils/ticketTransfer');
-      const transfer = await findTransferByOldCode(req.params.qrCode);
-      if (transfer) return res.status(410).json({ message: transferredMessage(transfer), code: 'TICKET_TRANSFERRED' });
-      res.status(404);
-      throw new Error('Ticket not found');
-    }
-
-    const r = rows[0];
-    const ticket = {
-      id:       r.id,
-      quantity: Number(r.quantity),
-      isUsed:   r.isUsed,
-      eventId:  r.eventId,
-      event:    { title: r.eventTitle },
-      registrationOption: { eventOption: { id: r.eventOptionId, name: r.eventOptionName, isMainTicket: r.isMainTicket } },
-      usages:   r.usages || []
-    };
-
-    // Optional server-side guard: ensure ticket belongs to the requested event when provided
-    const providedEventId = String((req.query?.eventId || req.body?.eventId) || '').trim();
-    if (providedEventId && ticket.eventId !== providedEventId) {
-      return res.status(400).json({ message: 'Ticket belongs to a different event', ticket });
-    }
-
-    // Section checks used to happen only in the browser; enforce them here too.
-    const sectionId = String((req.query?.sectionId || req.body?.sectionId) || '').trim() || null;
-    if (sectionId) {
-      const section = await prisma.section.findUnique({ where: { id: sectionId }, include: { allowedOptions: true } });
-      if (!section || section.eventId !== ticket.eventId) {
-        return res.status(400).json({ message: 'Section not found for this event', ticket });
-      }
-      if (!section.allowedOptions.some(o => o.eventOptionId === r.eventOptionId)) {
-        return res.status(400).json({ message: 'This ticket is not valid for this section', ticket });
-      }
-    }
-
-    // A section (or the whole event) locked to another device for offline scanning
-    // can't be scanned online — those scans would be invisible to the offline device.
-    const { blockingLock } = require('../utils/scanLocks');
-    const lock = await blockingLock({ eventId: ticket.eventId, optionId: r.eventOptionId }, { sectionId, deviceId: req.body?.deviceId || null });
-    if (lock) {
-      const scope = lock.section ? `"${lock.section.name}"` : 'This event';
-      return res.status(423).json({ message: `${scope} is offline-locked by ${lock.user?.name || 'another device'}${lock.deviceName ? ` on ${lock.deviceName}` : ''}. Scan it on that device, or ask a supervisor to release the lock.`, code: 'SCAN_LOCKED' });
-    }
-
-    // Multi-day events: the check-in is for one session (the one picked, or today's), and
-    // what's left is counted per session.
-    let session = null;
-    let sessionsUtil = null;
-    let schedule = null;
-    if (r.scheduleType === 'sessions') {
-      sessionsUtil = require('../utils/sessions');
-      schedule = await sessionsUtil.eventSchedule(ticket.eventId);
-      const found = sessionsUtil.ticketScanSession(schedule, schedule.sessions, r.pinnedSessionId, String(req.body?.sessionId || req.query?.sessionId || '').trim() || null, new Date(), r.chosenSessionIds);
-      if (!found.session) return res.status(400).json({ message: found.error, code: 'NO_SESSION', ticket });
-      session = found.session;
-    }
-
-    // Compute how many have already been redeemed
-    const totalRedeemed = session
-      ? sessionsUtil.redeemedForSession(ticket.usages, session.id)
-      : (ticket.usages || []).reduce((s, u) => s + (u.quantityRedeemed || 1), 0);
-    const remaining = (ticket.quantity || 1) - totalRedeemed;
-
-    if (remaining <= 0) {
-      if (session) {
-        const last = (ticket.usages || []).filter(u => u.sessionId === session.id).sort((a, b) => new Date(b.scannedAt) - new Date(a.scannedAt))[0];
-        const at = last ? new Date(last.scannedAt).toLocaleTimeString('en-ZA', { timeZone: sessionsUtil.TIMEZONE, hour: '2-digit', minute: '2-digit' }) : '';
-        return res.status(403).json({
-          message: `Already checked in for ${sessionsUtil.sessionLabel(session, schedule.sessions)}${at ? ` at ${at}` : ''}`,
-          ticket,
-          remaining: 0
-        });
-      }
-      return res.status(403).json({
-        message: 'Ticket has already been fully used',
-        ticket,
-        remaining: 0
-      });
-    }
-
-    // Youth events: no check-in without parental consent, unless a supervisor overrides.
-    const { consentStatusForTickets } = require('../utils/consent');
-    const consentStatus = (await consentStatusForTickets([ticket.id])).get(ticket.id) || 'not_required';
-    if (!['not_required', 'given'].includes(consentStatus)) {
-      const canOverride = ['admin', 'supervisor'].includes(req.user?.role);
-      if (!(req.body?.overrideConsent === true && canOverride)) {
-        const why = consentStatus === 'declined' ? 'Parental consent was declined' : consentStatus === 'pending' ? 'Parental consent is still pending' : 'Parental consent is missing';
-        return res.status(403).json({ message: `${why} — this ticket can't be checked in.`, code: 'CONSENT_REQUIRED', consentStatus, canOverride, ticket });
-      }
-      const { logAdminAction } = require('../utils/adminAudit');
-      const { getClientIp } = require('../utils/requestUtils');
-      logAdminAction({
-        actorId: req.user.id, actorRole: req.user.role, action: 'consent_override',
-        targetType: 'Ticket', targetId: ticket.id,
-        metadata: { consentStatus, eventId: ticket.eventId },
-        ip: getClientIp(req),
-      });
-    }
-
-    // Determine how many to redeem this scan (defaults to all remaining)
-    const requestedQty = parseInt(req.body?.qty || req.body?.quantity) || remaining;
-    const qtyToRedeem = Math.min(Math.max(1, requestedQty), remaining);
-
-    const newTotalRedeemed = totalRedeemed + qtyToRedeem;
-    const newRemaining = (ticket.quantity || 1) - newTotalRedeemed;
-    const fullyUsed = newRemaining <= 0;
-
-    // Run the usage insert and ticket status update in parallel — they don't depend on each other
-    const [ticketUsage] = await Promise.all([
-      prisma.ticketUsage.create({
-        data: {
-          id: uuidv4(),
-          ticketId: ticket.id,
-          scannedById: req.user.id,
-          quantityRedeemed: qtyToRedeem,
-          sessionId: session ? session.id : null,
-        }
-      }),
-      // A multi-session ticket is never "used up" — it's checked in again next session.
-      prisma.ticket.update({
-        where: { id: ticket.id },
-        data: { isUsed: session ? false : fullyUsed, updatedAt: new Date() }
-      })
-    ]);
-
-    // Only Main Tickets trigger a check-in notification (add-on tickets scanned via
-    // the QR camera flow are unaffected)
-    if (ticket.registrationOption?.eventOption?.isMainTicket) {
-      require('../utils/notifications')
-        .sendCheckInEmails(ticket.id, qtyToRedeem, newTotalRedeemed, newRemaining)
-        .catch(e => console.error('Failed to send check-in notification:', e));
-    }
-
-    const sessionPart = session ? ` for ${sessionsUtil.sessionLabel(session, schedule.sessions)}` : '';
-    res.json({
-      message: `Ticket scanned successfully${sessionPart} (${qtyToRedeem} of ${ticket.quantity || 1} redeemed${newRemaining > 0 ? `, ${newRemaining} remaining` : ''})`,
-      session: session ? { id: session.id, label: sessionsUtil.sessionLabel(session, schedule.sessions) } : null,
-      ticketUsage,
-      ticket,
-      qtyRedeemed: qtyToRedeem,
-      totalRedeemed: newTotalRedeemed,
-      remaining: newRemaining,
-    });
+    const { getClientIp } = require('../utils/requestUtils');
+    const result = await checkin.scanTicket(req.params.qrCode, req.user, {
+      eventId: req.query?.eventId || req.body?.eventId || null,
+      sectionId: req.query?.sectionId || req.body?.sectionId || null,
+      sessionId: req.body?.sessionId || req.query?.sessionId || null,
+      deviceId: req.body?.deviceId || null,
+      qty: parseInt(req.body?.qty || req.body?.quantity) || null,
+      overrideConsent: req.body?.overrideConsent === true,
+    }, getClientIp(req));
+    const { status, body } = checkin.v1ScanResponse(result);
+    res.status(status).json(body);
   } catch (error) {
-    res.status(res.statusCode === 200 ? 400 : res.statusCode).json({ message: safeErrorMessage(error) });
+    res.status(error.statusCode || (res.statusCode === 200 ? 400 : res.statusCode)).json({ message: safeErrorMessage(error) });
   }
 };
 

backend/src/controllers/userController.js

@@ -3,28 +3,22 @@ const { generateToken, hashPassword, comparePassword } = require('../config/auth
 const { v4: uuidv4 } = require('uuid');
 const { safeErrorMessage } = require('../utils/errorUtils');
 const { logSecurityEvent, getRecentSecurityEvents } = require('../utils/securityEvents');
-const { getSettingSync } = require('../utils/settingsCache');
 const {
   METHODS: TWO_FACTOR_METHODS,
   availableMethods,
   createChallenge,
   verifyChallenge,
   resendChallenge,
-  issueTrustedDevice,
-  isTrustedDevice,
   clearTrustedDevices,
   requiresTwoFactor,
-  enforcementMethod,
 } = require('../utils/twoFactor');
-const axios = require('axios');
 
 // ─── Helpers ────────────────────────────────────────────────────────────────
 
-// Org name for email subjects — falls back to Cross Code (the platform vendor)
-// rather than any specific customer's name when unconfigured.
-function getOrgName() {
-  return getSettingSync('org_name', process.env.ORG_NAME || 'Cross Code');
-}
+// Sign up, log in and profile changes are shared with /api/v2 (TypeScript, 1.51.2).
+const accounts = require('../services/auth');
+const { getOrgName, sendActivationLink, sendWelcomeEmail } = accounts;
+const { v1StatusOf } = require('../services/errors');
 
 // Resolve a client IP from the request (works behind proxies)
 function getClientIp(req) {
@@ -33,145 +27,10 @@ function getClientIp(req) {
   return req.socket?.remoteAddress || 'unknown';
 }
 
-const PRIVATE_IP_RE = /^(::1|::ffff:127\.|127\.|10\.|172\.(1[6-9]|2\d|3[01])\.|192\.168\.)/;
-
-// Fire-and-forget: create a 24h activation token and deliver it to an inactive
-// account — via email if it has a real (non-guest) address, otherwise via
-// WhatsApp if it has a phone number. Used both when a login attempt hits an
-// inactive account, and immediately when an admin/supervisor creates an
-// account on someone's behalf (walk-in / manual registration).
-async function sendActivationLink(user) {
-  const hasRealEmail = !!(user?.email && !user.email.endsWith('@guest.local'));
-  if (!hasRealEmail && !user?.phoneNumber) return;
-  try {
-    const token = uuidv4();
-    const expiresAt = new Date(Date.now() + 24 * 60 * 60 * 1000); // 24h
-    await prisma.passwordReset.updateMany({
-      where: { userId: user.id, used: false },
-      data: { used: true }
-    });
-    await prisma.passwordReset.create({
-      data: { id: uuidv4(), userId: user.id, token, expiresAt, used: false }
-    });
-    const baseUrl = process.env.FRONTEND_URL || process.env.APP_BASE_URL || 'http://localhost:3001';
-    const activationUrl = `${baseUrl.replace(/\/$/, '')}/activate-account?token=${encodeURIComponent(token)}`;
-
-    if (hasRealEmail) {
-      const { sendMail, buildAccountActivationEmail } = require('../utils/email');
-      const content = buildAccountActivationEmail({ name: user.name, activationUrl });
-      sendMail({ to: user.email, subject: `Activate your ${getOrgName()} account`, ...content })
-        .catch(e => console.warn('[activation email] Failed:', e?.message || e));
-    } else {
-      const orgName = getOrgName();
-      const waMessage = [
-        `🔓 *Activate your ${orgName} account*`,
-        '',
-        `Hi ${user.name || 'there'},`,
-        '',
-        `Your account needs to be activated before you can log in. Tap the link below to set a password and activate your account:`,
-        '',
-        activationUrl,
-        '',
-        `_This link expires in 24 hours._`,
-      ].join('\n');
-      const { waTextAny } = require('../utils/notify');
-      waTextAny(user, waMessage).catch(e => console.warn('[activation WA] Failed:', e?.message || e));
-    }
-  } catch (e) {
-    console.warn('[activation token] Failed to create activation token:', e?.message || e);
-  }
-}
-
-// Fire-and-forget: send a login notification email with approximate geo location
-async function sendLoginNotification(user, req) {
-  try {
-    const ip = getClientIp(req);
-    const userAgent = req.headers['user-agent'] || 'Unknown device';
-    const when = new Date().toLocaleString('en-ZA', { timeZone: 'Africa/Johannesburg' });
-
-    let location = 'Unknown location';
-    if (ip !== 'unknown' && !PRIVATE_IP_RE.test(ip)) {
-      try {
-        const geo = await axios.get(
-          `http://ip-api.com/json/${ip}?fields=status,city,regionName,country`,
-          { timeout: 3000 }
-        );
-        if (geo.data?.status === 'success') {
-          const parts = [geo.data.city, geo.data.regionName, geo.data.country].filter(Boolean);
-          if (parts.length) location = parts.join(', ');
-        }
-      } catch { /* geo lookup failure is non-fatal */ }
-    }
-
-    const { sendMail, buildLoginNotificationEmail } = require('../utils/email');
-    const { buildWALogin } = require('../utils/waMessages');
-    const content = buildLoginNotificationEmail({ name: user.name, when, location, userAgent });
-    // Security: always email; also WhatsApp if preferred
-    await sendMail({ to: user.email, subject: `New login to your ${getOrgName()} account`, ...content });
-    const { waText } = require('../utils/notify');
-    await waText(user, buildWALogin({ name: user.name, when, location, userAgent })).catch(() => {});
-  } catch (e) {
-    console.warn('[login notification] Failed:', e?.message || e);
-  }
-}
-
-// Fire-and-forget: send welcome email with next upcoming events
-async function sendWelcomeEmail(user) {
-  try {
-    const events = await prisma.event.findMany({
-      where: { isActive: true, startDate: { gt: new Date() } },
-      orderBy: { startDate: 'asc' },
-      take: 3,
-      select: { title: true, startDate: true },
-    });
-    const { sendMail, buildWelcomeEmail } = require('../utils/email');
-    const { buildWAWelcome } = require('../utils/waMessages');
-    const content = buildWelcomeEmail({ name: user.name, events });
-    const { shouldEmail, waText } = require('../utils/notify');
-    // Welcome is always sent via email; also via WhatsApp if preferred
-    await sendMail({ to: user.email, subject: `Welcome to ${getOrgName()}!`, ...content });
-    await waText(user, buildWAWelcome({ name: user.name, events })).catch(() => {});
-  } catch (e) {
-    console.warn('[welcome email] Failed:', e?.message || e);
-  }
-}
-
-// Fields the login flow needs once the password (and any 2FA code) has checked out.
-const LOGIN_USER_SELECT = {
-  id: true, name: true, email: true, role: true, tokenVersion: true, isActive: true,
-  phoneNumber: true, notificationPreference: true, twoFactorEnabled: true, twoFactorMethod: true, newsAskedAt: true,
-  noticeVersionAccepted: true,
-};
-
-// Errors from utils/twoFactor carry their own HTTP status; everything else follows
-// the controller convention of res.status(...) before throwing.
+// Errors from utils/twoFactor and the services carry their own HTTP status; everything else
+// follows the controller convention of res.status(...) before throwing.
 function errorStatus(error, res) {
-  return error?.statusCode || (res.statusCode === 200 ? 400 : res.statusCode);
-}
-
-// Final step of a successful login (after the password, and the 2FA code when
-// required): notify, record the activity, and issue the session token.
-async function completeLogin(user, req, res, extra = {}) {
-  const noticePromptPending = await require('../utils/privacyNotice').noticePromptPending(user).catch(() => false);
-  // Retention: logging in keeps the account (and cancels an inactivity warning).
-  prisma.user.update({ where: { id: user.id }, data: { lastLoginAt: new Date(), inactivityWarnedAt: null } }).catch(() => {});
-
-  // Send login notification in the background
-  sendLoginNotification(user, req).catch(() => {});
-  logSecurityEvent({ userId: user.id, type: 'login', ip: getClientIp(req), userAgent: req.headers['user-agent'] }).catch(() => {});
-
-  res.json({
-    id: user.id,
-    name: user.name,
-    email: user.email,
-    role: user.role,
-    token: generateToken(user.id, user.role, user.tokenVersion),
-    // POPIA: ask about News & announcements once (see NewsPrompt on the frontend), and to
-    // accept a privacy notice version marked as a significant change (NoticePrompt).
-    newsPromptPending: !user.newsAskedAt,
-    noticePromptPending,
-    ...extra
-  });
+  return v1StatusOf(error, res.statusCode === 200 ? 400 : res.statusCode);
 }
 
 // @desc    Register a new user
@@ -179,79 +38,9 @@ async function completeLogin(user, req, res, extra = {}) {
 // @access  Public
 const registerUser = async (req, res) => {
   try {
-    const { name, email, password, phoneNumber, notificationPreference, newsOptIn } = req.body;
-
-    // Normalize phone using SA-aware normalisation
-    const { normalizeZAPhone, isValidZAPhone } = require('../utils/whatsapp');
-    const phone = normalizeZAPhone(phoneNumber) || (phoneNumber ? phoneNumber.replace(/\D/g, '') || null : null);
-
-    // Validate preference — WhatsApp requires a valid phone number
-    const allowedPrefs = ['email', 'whatsapp', 'both'];
-    let pref = allowedPrefs.includes(notificationPreference) ? notificationPreference : 'email';
-    if ((pref === 'whatsapp' || pref === 'both') && !isValidZAPhone(phoneNumber)) {
-      pref = 'email'; // silently fall back if no valid number
-    }
-
-    // Check if user already exists
-    const userExists = await prisma.user.findFirst({
-      where: {
-        OR: [
-          { email },
-          ...(phone ? [{ phoneNumber: phone }] : [])
-        ]
-      }
-    });
-
-    if (userExists) {
-      res.status(400);
-      throw new Error('User already exists');
-    }
-
-    // Hash password
-    const hashedPassword = await hashPassword(password);
-
-    // Create user
-    const user = await prisma.user.create({
-      data: {
-        id: uuidv4(),
-        name,
-        email,
-        password: hashedPassword,
-        phoneNumber: phone,
-        notificationPreference: pref,
-        updatedAt: new Date()
-      }
-    });
-
-    if (user) {
-      // POPIA: the sign-up form's (unticked) "news and announcements" box. Recorded either
-      // way, so they aren't asked again at their first login.
-      await require('../utils/privacy').setNewsPreferences(
-        user.id,
-        { email: newsOptIn === true, whatsapp: newsOptIn === true },
-        { source: 'signup', ip: getClientIp(req), answered: true, logAll: true },
-      ).catch(e => console.warn('[signup] news preference not saved:', e?.message || e));
-      // The sign-up form requires ticking "I agree to the Terms of Use and Privacy Policy".
-      await require('../utils/privacyNotice').acceptNotice(user.id, { source: 'signup', ip: getClientIp(req) })
-        .catch(e => console.warn('[signup] notice acceptance not saved:', e?.message || e));
-
-
-      // Send welcome email in the background — don't block the response
-      sendWelcomeEmail(user).catch(() => {});
-
-      res.status(201).json({
-        id: user.id,
-        name: user.name,
-        email: user.email,
-        role: user.role,
-        token: generateToken(user.id, user.role, user.tokenVersion)
-      });
-    } else {
-      res.status(400);
-      throw new Error('Invalid user data');
-    }
+    res.status(201).json(await accounts.signUp(req.body || {}, { ip: getClientIp(req), userAgent: req.headers['user-agent'] }));
   } catch (error) {
-    res.status(res.statusCode === 200 ? 400 : res.statusCode).json({ message: safeErrorMessage(error) });
+    res.status(errorStatus(error, res)).json({ message: safeErrorMessage(error) });
   }
 };
 
@@ -260,108 +49,12 @@ const registerUser = async (req, res) => {
 // @access  Public
 const loginUser = async (req, res) => {
   try {
-    const {email, password, deviceToken} = req.body;
-
-    const rawInput = email;
-
-    // Normalize phone input — convert SA local format (0xx) → international (27xx)
-    const { normalizeZAPhone } = require('../utils/whatsapp');
-    const normalizedPhone = normalizeZAPhone(rawInput) || rawInput.replace(/\D/g, '');
-
-    // Check for user email or phone
-    const user = await prisma.user.findFirst({
-      where: {
-        OR: [
-          { email: rawInput },
-          ...(normalizedPhone ? [{ phoneNumber: normalizedPhone }] : []),
-        ]
-      }
-    });
-
-    if (!user) {
-      res.status(401);
-      throw new Error('User does not exist');
+    const { email, password, deviceToken } = req.body || {};
+    const result = await accounts.logIn({ identifier: email, password, deviceToken }, { ip: getClientIp(req), userAgent: req.headers['user-agent'] });
+    if (result.status === 'code_required') {
+      return res.json({ twoFactorRequired: true, ...(result.enrolling ? { enrolling: true } : {}), ...result.challenge });
     }
-
-    // Check if user is active
-    if (!user.isActive) {
-      // Resend the activation link on each failed login attempt against an inactive
-      // account, in case the original one (sent at creation, or a prior attempt) expired.
-      await sendActivationLink(user);
-      // If the account has a real email (not a guest placeholder), it went out via email
-      if (user.email && !user.email.endsWith('@guest.local')) {
-        res.status(401);
-        throw new Error('Your account is not yet active. We\'ve sent you an email with a link to activate your account.');
-      }
-      // No real email — if they have a phone number, it went out via WhatsApp
-      if (user.phoneNumber) {
-        res.status(401);
-        throw new Error('Your account is not yet active. We\'ve sent you a WhatsApp message with a link to activate your account.');
-      }
-      res.status(401);
-      throw new Error('Your account has been deactivated');
-    }
-
-    const MAX_ATTEMPTS = 5;
-    const LOCK_TIME = 5 * 60 * 1000; // 5 min
-
-    // Check lock
-    if (user.lockUntil && user.lockUntil > new Date()) {
-      const now = new Date().getTime();
-      const lockTime = new Date(user.lockUntil).getTime();
-
-      const diffMs = lockTime - now;
-      const diffMinutes = Math.ceil(diffMs / (1000 * 60));
-
-      throw new Error(`Too many attempts. Try again in ${diffMinutes} minute(s).`);
-    }
-
-    // Check password
-    const isMatch = await comparePassword(password, user.password);
-
-    if (!isMatch) {
-      const attempts = user.failedAttempts + 1;
-
-      await prisma.user.update({
-        where: { id: user.id },
-        data: {
-          failedAttempts: attempts,
-          lockUntil:
-              attempts >= MAX_ATTEMPTS
-                  ? new Date(Date.now() + LOCK_TIME)
-                  : null,
-        },
-      });
-
-      throw new Error("Invalid email or password");
-    }
-
-    // ✅ SUCCESS → reset attempts
-    const updated = await prisma.user.update({
-      where: { id: user.id },
-      data: { failedAttempts: 0, lockUntil: null },
-      select: LOGIN_USER_SELECT,
-    });
-
-    // Two-factor: the password alone isn't enough unless this browser was
-    // remembered earlier. Send a code and hand back a challenge instead of a token.
-    if (updated.twoFactorEnabled && !(await isTrustedDevice(updated.id, deviceToken))) {
-      const challenge = await createChallenge(updated, 'login', updated.twoFactorMethod || 'email');
-      return res.json({ twoFactorRequired: true, ...challenge });
-    }
-
-    // Admins and supervisors must use 2FA. Not set up yet: send a code to the
-    // first channel that can deliver one, and verifying it turns 2FA on. A
-    // trusted device can't skip this — nothing has been verified yet.
-    if (!updated.twoFactorEnabled && requiresTwoFactor(updated)) {
-      const method = await enforcementMethod(updated);
-      if (method) {
-        const challenge = await createChallenge(updated, 'login', method);
-        return res.json({ twoFactorRequired: true, enrolling: true, ...challenge });
-      }
-    }
-
-    await completeLogin(updated, req, res);
+    res.json(result.session);
   } catch (error) {
     res.status(errorStatus(error, res)).json({ message: safeErrorMessage(error) });
   }
@@ -373,30 +66,7 @@ const loginUser = async (req, res) => {
 const verifyLoginTwoFactor = async (req, res) => {
   try {
     const { challengeId, code, rememberDevice } = req.body || {};
-    const challenge = await verifyChallenge(challengeId, code, 'login');
-
-    let user = await prisma.user.findUnique({ where: { id: challenge.userId }, select: LOGIN_USER_SELECT });
-    if (!user || !user.isActive) {
-      res.status(401);
-      throw new Error('Your account has been deactivated');
-    }
-
-    // First login since 2FA became required for this role: the code proves the
-    // channel works, so turn 2FA on with it.
-    if (!user.twoFactorEnabled && requiresTwoFactor(user)) {
-      user = await prisma.user.update({
-        where: { id: user.id },
-        data: { twoFactorEnabled: true, twoFactorMethod: challenge.method, updatedAt: new Date() },
-        select: LOGIN_USER_SELECT,
-      });
-      logSecurityEvent({ userId: user.id, type: 'two_factor_enabled', ip: getClientIp(req), userAgent: req.headers['user-agent'] }).catch(() => {});
-    }
-
-    const extra = {};
-    if (rememberDevice === true) {
-      extra.deviceToken = await issueTrustedDevice(user.id, req.headers['user-agent']);
-    }
-    await completeLogin(user, req, res, extra);
+    res.json(await accounts.verifyLoginCode({ challengeId, code, rememberDevice }, { ip: getClientIp(req), userAgent: req.headers['user-agent'] }));
   } catch (error) {
     res.status(errorStatus(error, res)).json({ message: safeErrorMessage(error) });
   }
@@ -565,114 +235,10 @@ const getUserProfile = async (req, res) => {
 // @access  Private
 const updateUserProfile = async (req, res) => {
   try {
-    const user = await prisma.user.findUnique({
-      where: { id: req.user.id }
-    });
-
-    if (!user) {
-      res.status(404);
-      throw new Error('User not found');
-    }
-
-    const { name, email, password, phoneNumber, currentPassword, notificationPreference, homeCampusId } = req.body || {};
-
-    // Home campus (only while campuses are on): an active campus, or ''/null for none.
-    let newHomeCampusId = user.homeCampusId;
-    if (homeCampusId !== undefined && await require('../utils/campuses').campusesEnabled()) {
-      if (!homeCampusId) newHomeCampusId = null;
-      else {
-        const campus = await prisma.campus.findFirst({ where: { id: String(homeCampusId), archivedAt: null }, select: { id: true } });
-        if (!campus) { res.status(400); throw new Error('Choose one of the campuses in the list.'); }
-        newHomeCampusId = campus.id;
-      }
-    }
-
-    // If a password change is requested, verify current password for safety
-    let newHashedPassword = undefined;
-    if (typeof password === 'string' && password.trim().length > 0) {
-      const newPw = password.trim();
-      if (!currentPassword || typeof currentPassword !== 'string' || currentPassword.length === 0) {
-        res.status(400);
-        throw new Error('Current password is required to set a new password');
-      }
-      const matches = await comparePassword(currentPassword, user.password);
-      if (!matches) {
-        res.status(400);
-        throw new Error('Current password is incorrect');
-      }
-      if (newPw.length < 8) {
-        res.status(400);
-        throw new Error('New password must be at least 8 characters long');
-      }
-      newHashedPassword = await hashPassword(newPw);
-    }
-
-    // Normalize phone
-    const { normalizeZAPhone } = require('../utils/whatsapp');
-    let newPhone = user.phoneNumber;
-    if (phoneNumber !== undefined) {
-      newPhone = phoneNumber ? (normalizeZAPhone(phoneNumber) || phoneNumber.replace(/\D/g, '') || null) : null;
-    }
-
-    // Validate notification preference — WhatsApp requires a valid SA phone number
-    const { resolveNotificationPreference } = require('../utils/notificationPreference');
-    const newPref = resolveNotificationPreference(notificationPreference, newPhone, user.notificationPreference);
-
-    // 2FA codes can't go to WhatsApp without a usable number — move them to email
-    // rather than leave the account pointing at a channel that no longer exists.
-    const { isValidZAPhone } = require('../utils/whatsapp');
-    const newTwoFactorMethod = user.twoFactorMethod === 'whatsapp' && !isValidZAPhone(newPhone) ? 'email' : user.twoFactorMethod;
-
-    // Update user data
-    const updatedUser = await prisma.user.update({
-      where: { id: req.user.id },
-      data: {
-        name: name || user.name,
-        email: email || user.email,
-        password: newHashedPassword ? newHashedPassword : user.password,
-        phoneNumber: newPhone,
-        notificationPreference: newPref,
-        twoFactorMethod: newTwoFactorMethod,
-        homeCampusId: newHomeCampusId,
-        updatedAt: new Date()
-      },
-      select: {
-        id: true,
-        name: true,
-        email: true,
-        role: true,
-        phoneNumber: true,
-        notificationPreference: true,
-        twoFactorEnabled: true,
-        twoFactorMethod: true,
-        createdAt: true,
-        updatedAt: true,
-        isActive: true,
-        homeCampusId: true,
-        tokenVersion: true
-      }
-    });
-
-    // If the password was changed, send a security alert email (fire-and-forget)
-    if (newHashedPassword) {
-      await clearTrustedDevices(updatedUser.id);
-      const { sendMail, buildPasswordChangedEmail } = require('../utils/email');
-      const supportEmail = getSettingSync('org_email', process.env.EMAIL_FROM || '');
-      const content = buildPasswordChangedEmail({ name: updatedUser.name, when: Date.now(), supportEmail });
-      sendMail({ to: updatedUser.email, subject: `Your ${getOrgName()} password was changed`, ...content })
-        .catch(e => console.warn('[email] Failed to send password changed alert:', e?.message || e));
-      const { waText } = require('../utils/notify');
-      waText(updatedUser, content.text).catch(() => {});
-      logSecurityEvent({ userId: updatedUser.id, type: 'password_changed', ip: getClientIp(req), userAgent: req.headers['user-agent'] }).catch(() => {});
-    }
-
-    res.json({
-      ...updatedUser,
-      twoFactorRequired: requiresTwoFactor(updatedUser),
-      token: generateToken(updatedUser.id, updatedUser.role, updatedUser.tokenVersion)
-    });
+    const { user, twoFactorRequired, token } = await accounts.updateProfile(req.user.id, req.body || {}, { ip: getClientIp(req), userAgent: req.headers['user-agent'] });
+    res.json({ ...user, twoFactorRequired, token });
   } catch (error) {
-    res.status(res.statusCode === 200 ? 400 : res.statusCode).json({ message: safeErrorMessage(error) });
+    res.status(errorStatus(error, res)).json({ message: safeErrorMessage(error) });
   }
 };
 

backend/src/services/auth.ts

@@ -0,0 +1,349 @@
+/**
+ * Accounts: sign up, log in (with the 2FA code step) and changing your own details (1.51.2).
+ * Moved from userController.js so /api/users/* (v1) and /api/v2/auth/*, /api/v2/me share it.
+ */
+import { v4 as uuidv4 } from 'uuid';
+import axios from 'axios';
+import { prisma } from '../v2/legacy';
+import { fail, ServiceError } from './errors';
+
+/* eslint-disable @typescript-eslint/no-explicit-any -- the JS helpers below aren't typed yet */
+const auth = require('../config/auth') as {
+  generateToken(id: string, role: string, tokenVersion: number): string;
+  hashPassword(pw: string): Promise<string>;
+  comparePassword(pw: string, hash: string): Promise<boolean>;
+};
+const twoFactor = require('../utils/twoFactor') as {
+  createChallenge(user: any, purpose: string, method: string): Promise<{ challengeId: string; method: string; destination: string | null }>;
+  verifyChallenge(challengeId: string, code: string, purpose: string): Promise<{ userId: string; method: string }>;
+  issueTrustedDevice(userId: string, userAgent?: string): Promise<string>;
+  isTrustedDevice(userId: string, deviceToken?: string): Promise<boolean>;
+  clearTrustedDevices(userId: string): Promise<unknown>;
+  requiresTwoFactor(user: { role: string }): boolean;
+  enforcementMethod(user: any): Promise<string | null>;
+};
+const { logSecurityEvent } = require('../utils/securityEvents') as { logSecurityEvent(e: object): Promise<unknown> };
+const { getSettingSync } = require('../utils/settingsCache') as { getSettingSync(key: string, fallback: string): string };
+const whatsapp = () => require('../utils/whatsapp') as { normalizeZAPhone(p: unknown): string | null; isValidZAPhone(p: unknown): boolean };
+
+/** Who is asking, for security notices and the activity log. */
+export type RequestInfo = { ip?: string; userAgent?: string };
+
+// Org name for email subjects — falls back to Cross Code (the platform vendor)
+// rather than any specific customer's name when unconfigured.
+export function getOrgName(): string {
+  return getSettingSync('org_name', process.env.ORG_NAME || 'Cross Code');
+}
+
+const PRIVATE_IP_RE = /^(::1|::ffff:127\.|127\.|10\.|172\.(1[6-9]|2\d|3[01])\.|192\.168\.)/;
+const frontendUrl = () => (process.env.FRONTEND_URL || process.env.APP_BASE_URL || 'http://localhost:3001').replace(/\/$/, '');
+
+/**
+ * Fire-and-forget: create a 24h activation token and deliver it to an inactive account — by
+ * email if it has a real (non-guest) address, otherwise by WhatsApp if it has a phone number.
+ * Used when a login hits an inactive account, and when staff create an account for someone.
+ */
+export async function sendActivationLink(user: { id: string; name?: string | null; email?: string | null; phoneNumber?: string | null }): Promise<void> {
+  const hasRealEmail = !!(user?.email && !user.email.endsWith('@guest.local'));
+  if (!hasRealEmail && !user?.phoneNumber) return;
+  try {
+    const token = uuidv4();
+    const expiresAt = new Date(Date.now() + 24 * 60 * 60 * 1000);
+    await prisma.passwordReset.updateMany({ where: { userId: user.id, used: false }, data: { used: true } });
+    await prisma.passwordReset.create({ data: { id: uuidv4(), userId: user.id, token, expiresAt, used: false } });
+    const activationUrl = `${frontendUrl()}/activate-account?token=${encodeURIComponent(token)}`;
+
+    if (hasRealEmail) {
+      const { sendMail, buildAccountActivationEmail } = require('../utils/email');
+      const content = buildAccountActivationEmail({ name: user.name, activationUrl });
+      sendMail({ to: user.email, subject: `Activate your ${getOrgName()} account`, ...content })
+        .catch((e: any) => console.warn('[activation email] Failed:', e?.message || e));
+    } else {
+      const orgName = getOrgName();
+      const waMessage = [
+        `🔓 *Activate your ${orgName} account*`,
+        '',
+        `Hi ${user.name || 'there'},`,
+        '',
+        'Your account needs to be activated before you can log in. Tap the link below to set a password and activate your account:',
+        '',
+        activationUrl,
+        '',
+        '_This link expires in 24 hours._',
+      ].join('\n');
+      const { waTextAny } = require('../utils/notify');
+      waTextAny(user, waMessage).catch((e: any) => console.warn('[activation WA] Failed:', e?.message || e));
+    }
+  } catch (e: any) {
+    console.warn('[activation token] Failed to create activation token:', e?.message || e);
+  }
+}
+
+// Fire-and-forget: a login notice with the approximate place it came from.
+async function sendLoginNotification(user: any, info: RequestInfo): Promise<void> {
+  try {
+    const ip = info.ip || 'unknown';
+    const userAgent = info.userAgent || 'Unknown device';
+    const when = new Date().toLocaleString('en-ZA', { timeZone: 'Africa/Johannesburg' });
+
+    let location = 'Unknown location';
+    if (ip !== 'unknown' && !PRIVATE_IP_RE.test(ip)) {
+      try {
+        const geo = await axios.get(`http://ip-api.com/json/${ip}?fields=status,city,regionName,country`, { timeout: 3000 });
+        if (geo.data?.status === 'success') {
+          const parts = [geo.data.city, geo.data.regionName, geo.data.country].filter(Boolean);
+          if (parts.length) location = parts.join(', ');
+        }
+      } catch { /* geo lookup failure is non-fatal */ }
+    }
+
+    const { sendMail, buildLoginNotificationEmail } = require('../utils/email');
+    const { buildWALogin } = require('../utils/waMessages');
+    const content = buildLoginNotificationEmail({ name: user.name, when, location, userAgent });
+    // Security: always email; also WhatsApp if preferred
+    await sendMail({ to: user.email, subject: `New login to your ${getOrgName()} account`, ...content });
+    const { waText } = require('../utils/notify');
+    await waText(user, buildWALogin({ name: user.name, when, location, userAgent })).catch(() => {});
+  } catch (e: any) {
+    console.warn('[login notification] Failed:', e?.message || e);
+  }
+}
+
+/** Fire-and-forget: the welcome email, with the next few upcoming events. */
+export async function sendWelcomeEmail(user: any): Promise<void> {
+  try {
+    const events = await prisma.event.findMany({
+      where: { isActive: true, startDate: { gt: new Date() } },
+      orderBy: { startDate: 'asc' },
+      take: 3,
+      select: { title: true, startDate: true },
+    });
+    const { sendMail, buildWelcomeEmail } = require('../utils/email');
+    const { buildWAWelcome } = require('../utils/waMessages');
+    const content = buildWelcomeEmail({ name: user.name, events });
+    const { waText } = require('../utils/notify');
+    // Welcome is always sent via email; also via WhatsApp if preferred
+    await sendMail({ to: user.email, subject: `Welcome to ${getOrgName()}!`, ...content });
+    await waText(user, buildWAWelcome({ name: user.name, events })).catch(() => {});
+  } catch (e: any) {
+    console.warn('[welcome email] Failed:', e?.message || e);
+  }
+}
+
+// Fields the login flow needs once the password (and any 2FA code) has checked out.
+export const LOGIN_USER_SELECT = {
+  id: true, name: true, email: true, role: true, tokenVersion: true, isActive: true,
+  phoneNumber: true, notificationPreference: true, twoFactorEnabled: true, twoFactorMethod: true, newsAskedAt: true,
+  noticeVersionAccepted: true,
+} as const;
+
+type LoginUser = { id: string; name: string; email: string; role: string; tokenVersion: number; newsAskedAt: Date | null; noticeVersionAccepted: number | null } & Record<string, unknown>;
+
+export type Session = {
+  id: string; name: string; email: string; role: string; token: string;
+  newsPromptPending: boolean; noticePromptPending: false | 'first' | 'updated'; deviceToken?: string;
+};
+
+/**
+ * Final step of a successful login (after the password, and the 2FA code when required):
+ * notify, record the activity, and issue the session token.
+ */
+export async function completeLogin(user: LoginUser, info: RequestInfo, extra: { deviceToken?: string } = {}): Promise<Session> {
+  const noticePromptPending = await (require('../utils/privacyNotice') as { noticePromptPending(u: object): Promise<false | 'first' | 'updated'> }).noticePromptPending(user).catch(() => false as const);
+  // Retention: logging in keeps the account (and cancels an inactivity warning).
+  prisma.user.update({ where: { id: user.id }, data: { lastLoginAt: new Date(), inactivityWarnedAt: null } }).catch(() => {});
+  sendLoginNotification(user, info).catch(() => {});
+  logSecurityEvent({ userId: user.id, type: 'login', ip: info.ip, userAgent: info.userAgent }).catch(() => {});
+  return {
+    id: user.id,
+    name: user.name,
+    email: user.email,
+    role: user.role,
+    token: auth.generateToken(user.id, user.role, user.tokenVersion),
+    // POPIA: ask about News & announcements once (NewsPrompt on the frontend), and to accept a
+    // privacy notice version marked as a significant change (NoticePrompt).
+    newsPromptPending: !user.newsAskedAt,
+    noticePromptPending,
+    ...extra,
+  };
+}
+
+export type SignUpInput = { name: string; email: string; password: string; phoneNumber?: string | null; notificationPreference?: string; newsOptIn?: boolean };
+
+/** A new account (signed in straight away), with the news choice and privacy notice recorded. */
+export async function signUp(input: SignUpInput, info: RequestInfo) {
+  const { name, email, password, phoneNumber, notificationPreference, newsOptIn } = input;
+  const { normalizeZAPhone, isValidZAPhone } = whatsapp();
+  const phone = normalizeZAPhone(phoneNumber) || (phoneNumber ? phoneNumber.replace(/\D/g, '') || null : null);
+
+  // WhatsApp needs a valid phone number; otherwise quietly use email
+  const allowedPrefs = ['email', 'whatsapp', 'both'];
+  let pref = allowedPrefs.includes(String(notificationPreference)) ? String(notificationPreference) : 'email';
+  if ((pref === 'whatsapp' || pref === 'both') && !isValidZAPhone(phoneNumber)) pref = 'email';
+
+  const userExists = await prisma.user.findFirst({ where: { OR: [{ email }, ...(phone ? [{ phoneNumber: phone }] : [])] } });
+  if (userExists) fail(409, 'User already exists', undefined, { v1Status: 400 });
+
+  const user = await prisma.user.create({
+    data: { id: uuidv4(), name, email, password: await auth.hashPassword(password), phoneNumber: phone, notificationPreference: pref as 'email' | 'whatsapp' | 'both', updatedAt: new Date() },
+  });
+
+  // POPIA: the sign-up form's (unticked) "news and announcements" box. Recorded either way,
+  // so they aren't asked again at their first login.
+  await require('../utils/privacy').setNewsPreferences(
+    user.id,
+    { email: newsOptIn === true, whatsapp: newsOptIn === true },
+    { source: 'signup', ip: info.ip, answered: true, logAll: true },
+  ).catch((e: any) => console.warn('[signup] news preference not saved:', e?.message || e));
+  // The sign-up form requires ticking "I agree to the Terms of Use and Privacy Policy".
+  await require('../utils/privacyNotice').acceptNotice(user.id, { source: 'signup', ip: info.ip })
+    .catch((e: any) => console.warn('[signup] notice acceptance not saved:', e?.message || e));
+
+  sendWelcomeEmail(user).catch(() => {});
+  return { id: user.id, name: user.name, email: user.email, role: user.role, token: auth.generateToken(user.id, user.role, user.tokenVersion) };
+}
+
+export type LoginResult =
+  | { status: 'signed_in'; session: Session }
+  | { status: 'code_required'; challenge: { challengeId: string; method: string; destination: string | null }; enrolling: boolean };
+
+const MAX_ATTEMPTS = 5;
+const LOCK_TIME = 5 * 60 * 1000;
+
+/**
+ * Checks an email (or phone number) and password. Five wrong passwords lock the account for
+ * five minutes. With 2FA (or when the role needs it), a code is sent instead of a token.
+ */
+export async function logIn(input: { identifier: string; password: string; deviceToken?: string }, info: RequestInfo): Promise<LoginResult> {
+  const rawInput = String(input.identifier || '');
+  // SA local format (0xx) → international (27xx)
+  const normalizedPhone = whatsapp().normalizeZAPhone(rawInput) || rawInput.replace(/\D/g, '');
+  const user = await prisma.user.findFirst({ where: { OR: [{ email: rawInput }, ...(normalizedPhone ? [{ phoneNumber: normalizedPhone }] : [])] } });
+  if (!user) return fail(401, 'User does not exist');
+
+  if (!user.isActive) {
+    // Resend the activation link on each attempt, in case the earlier one expired.
+    await sendActivationLink(user);
+    if (user.email && !user.email.endsWith('@guest.local')) fail(401, 'Your account is not yet active. We\'ve sent you an email with a link to activate your account.');
+    if (user.phoneNumber) fail(401, 'Your account is not yet active. We\'ve sent you a WhatsApp message with a link to activate your account.');
+    fail(401, 'Your account has been deactivated');
+  }
+
+  if (user.lockUntil && user.lockUntil > new Date()) {
+    const minutes = Math.ceil((new Date(user.lockUntil).getTime() - Date.now()) / 60000);
+    fail(429, `Too many attempts. Try again in ${minutes} minute(s).`, undefined, { v1Status: 400 });
+  }
+
+  if (!(await auth.comparePassword(input.password, user.password))) {
+    const attempts = user.failedAttempts + 1;
+    await prisma.user.update({ where: { id: user.id }, data: { failedAttempts: attempts, lockUntil: attempts >= MAX_ATTEMPTS ? new Date(Date.now() + LOCK_TIME) : null } });
+    fail(401, 'Invalid email or password', undefined, { v1Status: 400 });
+  }
+
+  const updated = await prisma.user.update({ where: { id: user.id }, data: { failedAttempts: 0, lockUntil: null }, select: LOGIN_USER_SELECT });
+
+  // Two-factor: the password alone isn't enough unless this browser was remembered earlier.
+  if (updated.twoFactorEnabled && !(await twoFactor.isTrustedDevice(updated.id, input.deviceToken))) {
+    return { status: 'code_required', challenge: await twoFactor.createChallenge(updated, 'login', updated.twoFactorMethod || 'email'), enrolling: false };
+  }
+  // Admins and supervisors must use 2FA. Not set up yet: send a code to the first channel that
+  // can take one; verifying it turns 2FA on. A trusted device can't skip this.
+  if (!updated.twoFactorEnabled && twoFactor.requiresTwoFactor(updated)) {
+    const method = await twoFactor.enforcementMethod(updated);
+    if (method) return { status: 'code_required', challenge: await twoFactor.createChallenge(updated, 'login', method), enrolling: true };
+  }
+  return { status: 'signed_in', session: await completeLogin(updated, info) };
+}
+
+/** The second login step: the emailed or WhatsApp code for a token (and optionally remember this device). */
+export async function verifyLoginCode(input: { challengeId: string; code: string; rememberDevice?: boolean }, info: RequestInfo): Promise<Session> {
+  const challenge = await twoFactor.verifyChallenge(input.challengeId, input.code, 'login');
+  let user = await prisma.user.findUnique({ where: { id: challenge.userId }, select: LOGIN_USER_SELECT });
+  if (!user || !user.isActive) return fail(401, 'Your account has been deactivated');
+
+  // First login since 2FA became required for this role: the code proves the channel works,
+  // so turn 2FA on with it.
+  if (!user.twoFactorEnabled && twoFactor.requiresTwoFactor(user)) {
+    user = await prisma.user.update({ where: { id: user.id }, data: { twoFactorEnabled: true, twoFactorMethod: challenge.method as 'email' | 'whatsapp', updatedAt: new Date() }, select: LOGIN_USER_SELECT });
+    logSecurityEvent({ userId: user.id, type: 'two_factor_enabled', ip: info.ip, userAgent: info.userAgent }).catch(() => {});
+  }
+  const extra = input.rememberDevice === true ? { deviceToken: await twoFactor.issueTrustedDevice(user.id, info.userAgent) } : {};
+  return completeLogin(user, info, extra);
+}
+
+export type ProfileInput = {
+  name?: string; email?: string; phoneNumber?: string | null; notificationPreference?: string; homeCampusId?: string | null;
+  /** A new password; needs currentPassword. */
+  password?: string; currentPassword?: string;
+};
+
+export const PROFILE_SELECT = {
+  id: true, name: true, email: true, role: true, phoneNumber: true, notificationPreference: true, twoFactorEnabled: true,
+  twoFactorMethod: true, createdAt: true, updatedAt: true, isActive: true, homeCampusId: true, tokenVersion: true,
+} as const;
+
+/**
+ * Changes your own details. A new password needs the current one, signs out other devices'
+ * remembered 2FA, and sends a security notice. Returns the account and a fresh token.
+ */
+export async function updateProfile(userId: string, input: ProfileInput, info: RequestInfo) {
+  const user = await prisma.user.findUnique({ where: { id: userId } });
+  if (!user) return fail(404, 'User not found');
+  const { name, email, password, phoneNumber, currentPassword, notificationPreference, homeCampusId } = input;
+
+  // Home campus (only while campuses are on): an active campus, or ''/null for none.
+  let newHomeCampusId = user.homeCampusId;
+  if (homeCampusId !== undefined && await require('../utils/campuses').campusesEnabled()) {
+    if (!homeCampusId) newHomeCampusId = null;
+    else {
+      const campus = await prisma.campus.findFirst({ where: { id: String(homeCampusId), archivedAt: null }, select: { id: true } });
+      if (!campus) fail(400, 'Choose one of the campuses in the list.');
+      newHomeCampusId = campus!.id;
+    }
+  }
+
+  // A password change needs the current password
+  let newHashedPassword: string | undefined;
+  if (typeof password === 'string' && password.trim().length > 0) {
+    const newPw = password.trim();
+    if (!currentPassword) fail(400, 'Current password is required to set a new password');
+    if (!(await auth.comparePassword(currentPassword!, user.password))) fail(400, 'Current password is incorrect');
+    if (newPw.length < 8) fail(400, 'New password must be at least 8 characters long');
+    newHashedPassword = await auth.hashPassword(newPw);
+  }
+
+  const { normalizeZAPhone, isValidZAPhone } = whatsapp();
+  let newPhone = user.phoneNumber;
+  if (phoneNumber !== undefined) newPhone = phoneNumber ? (normalizeZAPhone(phoneNumber) || phoneNumber.replace(/\D/g, '') || null) : null;
+
+  // WhatsApp needs a valid SA phone number
+  const { resolveNotificationPreference } = require('../utils/notificationPreference');
+  const newPref = resolveNotificationPreference(notificationPreference, newPhone, user.notificationPreference);
+  // 2FA codes can't go to WhatsApp without a usable number — move them to email.
+  const newTwoFactorMethod = user.twoFactorMethod === 'whatsapp' && !isValidZAPhone(newPhone) ? 'email' : user.twoFactorMethod;
+
+  const updated = await prisma.user.update({
+    where: { id: userId },
+    data: {
+      name: name || user.name, email: email || user.email, password: newHashedPassword ?? user.password, phoneNumber: newPhone,
+      notificationPreference: newPref, twoFactorMethod: newTwoFactorMethod, homeCampusId: newHomeCampusId, updatedAt: new Date(),
+    },
+    select: PROFILE_SELECT,
+  });
+
+  if (newHashedPassword) {
+    await twoFactor.clearTrustedDevices(updated.id);
+    const { sendMail, buildPasswordChangedEmail } = require('../utils/email');
+    const supportEmail = getSettingSync('org_email', process.env.EMAIL_FROM || '');
+    const content = buildPasswordChangedEmail({ name: updated.name, when: Date.now(), supportEmail });
+    sendMail({ to: updated.email, subject: `Your ${getOrgName()} password was changed`, ...content })
+      .catch((e: any) => console.warn('[email] Failed to send password changed alert:', e?.message || e));
+    const { waText } = require('../utils/notify');
+    waText(updated, content.text).catch(() => {});
+    logSecurityEvent({ userId: updated.id, type: 'password_changed', ip: info.ip, userAgent: info.userAgent }).catch(() => {});
+  }
+
+  return { user: updated, twoFactorRequired: twoFactor.requiresTwoFactor(updated), token: auth.generateToken(updated.id, updated.role, updated.tokenVersion) };
+}
+
+export { ServiceError };

backend/src/services/checkin.ts

@@ -0,0 +1,286 @@
+/**
+ * Checking a ticket in by its QR code (1.51.2). Moved from ticketController.js so
+ * /api/tickets/scan-preview|scan (v1) and /api/v2/checkin/{qrCode} share it.
+ *
+ * Scanning has several normal answers besides "checked in" (already used, wrong event, consent
+ * missing…). They come back as an `outcome`, not thrown, so each caller can show them its way;
+ * only an unknown code is an error (404).
+ */
+import { v4 as uuidv4 } from 'uuid';
+import { prisma } from '../v2/legacy';
+import { fail } from './errors';
+import type { Role } from './registrations';
+
+/* eslint-disable @typescript-eslint/no-explicit-any -- the JS helpers below aren't typed yet */
+const transfer = () => require('../utils/ticketTransfer') as { findTransferByOldCode(code: string): Promise<any>; transferredMessage(t: any): string };
+const consent = () => require('../utils/consent') as { consentStatusForTickets(ids: string[]): Promise<Map<string, string>> };
+type Session = { id: string; label?: string | null; startsAt: Date };
+const sessions = () => require('../utils/sessions') as {
+  TIMEZONE: string;
+  eventSchedule(eventId: string): Promise<{ sessions: Session[] } & Record<string, unknown>>;
+  ticketScanSession(schedule: any, list: Session[], pinned: string | null, picked: string | null, now: Date, chosen: string[] | null): { session: Session | null; error: string | null };
+  sessionLabel(session: Session, list: Session[]): string;
+  redeemedForSession(usages: Usage[], sessionId: string): number;
+};
+type Usage = { id?: string; quantityRedeemed: number | null; scannedAt: string; sessionId: string | null };
+
+export type ConsentStatus = 'not_required' | 'given' | 'pending' | 'declined' | 'missing' | string;
+
+/** A ticket that was handed on: the old code tells the scanner who has it now. */
+async function transferredOutcome(qrCode: string) {
+  const t = transfer();
+  const found = await t.findTransferByOldCode(qrCode);
+  return found ? { outcome: 'transferred' as const, message: t.transferredMessage(found) } : null;
+}
+
+export type PreviewResult =
+  | { outcome: 'transferred'; message: string }
+  | {
+    outcome: 'found';
+    ticket: {
+      id: string; quantity: number; isUsed: boolean; eventId: string; consentStatus: ConsentStatus; remaining: number;
+      session: { id: string; label: string } | null; sessionError: string | null;
+      registrationOption: { id: string | null; eventOption: { id: string | null; name: string | null }; variant: { id: string; name: string } | null };
+      event: { id: string; title: string }; user: { id: string; name: string }; attendee: { name: string } | null;
+      usages: Usage[];
+    };
+  };
+
+/** What a scan would do, without checking anything in (the scanner's preview card). */
+export async function previewScan(qrCode: string, opts: { sessionId?: string | null } = {}): Promise<PreviewResult> {
+  // Single JOIN query instead of 6 sequential Prisma round-trips (critical for remote DBs)
+  const rows = await prisma.$queryRaw<any[]>`
+    SELECT
+      t.id, t."qrCode", t.quantity, t."isUsed", t."eventId",
+      ro.id AS "registrationOptionId", ro."sessionId" AS "pinnedSessionId", ro."sessionIds" AS "chosenSessionIds",
+      eo.id AS "eventOptionId", eo.name AS "eventOptionName",
+      ov.id AS "variantId", ov.name AS "variantName",
+      e.id AS "evId", e.title AS "eventTitle", e."scheduleType" AS "scheduleType",
+      u.id AS "userId", u.name AS "userName",
+      a.name AS "attendeeName",
+      COALESCE(
+        json_agg(json_build_object('quantityRedeemed', tu."quantityRedeemed", 'scannedAt', tu."scannedAt", 'sessionId', tu."sessionId"))
+          FILTER (WHERE tu.id IS NOT NULL),
+        '[]'::json
+      ) AS usages
+    FROM "Ticket" t
+    LEFT JOIN "RegistrationOption" ro ON ro.id = t."registrationOptionId"
+    LEFT JOIN "EventOption"        eo ON eo.id = ro."eventOptionId"
+    LEFT JOIN "OptionVariant"      ov ON ov.id = ro."variantId"
+    LEFT JOIN "Event"               e ON  e.id = t."eventId"
+    LEFT JOIN "User"                u ON  u.id = t."userId"
+    LEFT JOIN "Attendee"            a ON  a.id = t."attendeeId"
+    LEFT JOIN "TicketUsage"        tu ON tu."ticketId" = t.id
+    WHERE t."qrCode" = ${qrCode}
+    GROUP BY t.id, ro.id, eo.id, ov.id, e.id, u.id, a.id
+  `;
+  if (!rows || rows.length === 0) return (await transferredOutcome(qrCode)) ?? fail(404, 'Ticket not found');
+
+  const r = rows[0];
+  const consentStatus = (await consent().consentStatusForTickets([r.id])).get(r.id) || 'not_required';
+  const usages: Usage[] = r.usages || [];
+  // Multi-day events: check-in is per session, so what's left is counted for the
+  // session this scan is for (the one picked, or today's).
+  let remaining = Number(r.quantity) - usages.reduce((s, u) => s + (u.quantityRedeemed || 1), 0);
+  let session: { id: string; label: string } | null = null;
+  let sessionError: string | null = null;
+  if (r.scheduleType === 'sessions') {
+    const s = sessions();
+    const schedule = await s.eventSchedule(r.eventId);
+    const found = s.ticketScanSession(schedule, schedule.sessions, r.pinnedSessionId, opts.sessionId || null, new Date(), r.chosenSessionIds);
+    sessionError = found.error;
+    if (found.session) {
+      session = { id: found.session.id, label: s.sessionLabel(found.session, schedule.sessions) };
+      remaining = Number(r.quantity) - s.redeemedForSession(usages, found.session.id);
+    } else {
+      remaining = 0;
+    }
+  }
+  return {
+    outcome: 'found',
+    ticket: {
+      id: r.id, quantity: Number(r.quantity), isUsed: r.isUsed, eventId: r.eventId, consentStatus, remaining, session, sessionError,
+      registrationOption: {
+        id: r.registrationOptionId,
+        eventOption: { id: r.eventOptionId, name: r.eventOptionName },
+        variant: r.variantId ? { id: r.variantId, name: r.variantName } : null,
+      },
+      event: { id: r.evId, title: r.eventTitle },
+      user: { id: r.userId, name: r.userName },
+      attendee: r.attendeeName ? { name: r.attendeeName } : null,
+      usages,
+    },
+  };
+}
+
+export type ScanTicket = {
+  id: string; quantity: number; isUsed: boolean; eventId: string; event: { title: string };
+  registrationOption: { eventOption: { id: string | null; name: string | null; isMainTicket: boolean | null } };
+  usages: Usage[];
+};
+
+export type ScanOptions = {
+  /** Refuse a ticket for any other event (the scanner's chosen event). */
+  eventId?: string | null;
+  /** Only tickets valid for this section. */
+  sectionId?: string | null;
+  /** Multi-day events: the session (default: today's). */
+  sessionId?: string | null;
+  /** The scanning device, so its own offline lock doesn't block it. */
+  deviceId?: string | null;
+  /** How many people to check in (default: everyone left). */
+  qty?: number | null;
+  /** Supervisors and admins: check in without parental consent (logged). */
+  overrideConsent?: boolean;
+};
+
+export type ScanResult =
+  | { outcome: 'checked_in'; message: string; session: { id: string; label: string } | null; ticketUsage: { id: string; scannedAt: Date; quantityRedeemed: number; sessionId: string | null }; ticket: ScanTicket; qtyRedeemed: number; totalRedeemed: number; remaining: number }
+  | { outcome: 'transferred'; message: string }
+  | { outcome: 'wrong_event' | 'section_not_found' | 'wrong_section' | 'no_session'; message: string; ticket: ScanTicket }
+  | { outcome: 'locked'; message: string }
+  | { outcome: 'already_used'; message: string; ticket: ScanTicket }
+  | { outcome: 'consent_required'; message: string; consentStatus: ConsentStatus; canOverride: boolean; ticket: ScanTicket };
+
+/** Checks a ticket in (all of it, or `qty` people), or says why it can't be. */
+export async function scanTicket(qrCode: string, actor: { id: string; role: Role }, opts: ScanOptions = {}, ip?: string): Promise<ScanResult> {
+  // Single JOIN query — avoids multiple sequential round-trips to the remote DB
+  const rows = await prisma.$queryRaw<any[]>`
+    SELECT
+      t.id, t.quantity, t."isUsed", t."eventId",
+      e.title AS "eventTitle", e."scheduleType" AS "scheduleType",
+      ro."sessionId" AS "pinnedSessionId", ro."sessionIds" AS "chosenSessionIds",
+      eo.id AS "eventOptionId", eo.name AS "eventOptionName", eo."isMainTicket" AS "isMainTicket",
+      COALESCE(
+        json_agg(json_build_object('id', tu.id, 'quantityRedeemed', tu."quantityRedeemed", 'scannedAt', tu."scannedAt", 'sessionId', tu."sessionId"))
+          FILTER (WHERE tu.id IS NOT NULL),
+        '[]'::json
+      ) AS usages
+    FROM "Ticket" t
+    LEFT JOIN "Event"              e  ON  e.id = t."eventId"
+    LEFT JOIN "RegistrationOption" ro ON ro.id = t."registrationOptionId"
+    LEFT JOIN "EventOption"        eo ON eo.id = ro."eventOptionId"
+    LEFT JOIN "TicketUsage"        tu ON tu."ticketId" = t.id
+    WHERE t."qrCode" = ${qrCode}
+    GROUP BY t.id, e.id, eo.id, ro.id
+  `;
+  if (!rows || rows.length === 0) return (await transferredOutcome(qrCode)) ?? fail(404, 'Ticket not found');
+
+  const r = rows[0];
+  const ticket: ScanTicket = {
+    id: r.id,
+    quantity: Number(r.quantity),
+    isUsed: r.isUsed,
+    eventId: r.eventId,
+    event: { title: r.eventTitle },
+    registrationOption: { eventOption: { id: r.eventOptionId, name: r.eventOptionName, isMainTicket: r.isMainTicket } },
+    usages: r.usages || [],
+  };
+
+  // Ensure the ticket belongs to the event being scanned, when given
+  const providedEventId = String(opts.eventId || '').trim();
+  if (providedEventId && ticket.eventId !== providedEventId) return { outcome: 'wrong_event', message: 'Ticket belongs to a different event', ticket };
+
+  // Section checks used to happen only in the browser; enforce them here too.
+  const sectionId = String(opts.sectionId || '').trim() || null;
+  if (sectionId) {
+    const section = await prisma.section.findUnique({ where: { id: sectionId }, include: { allowedOptions: true } });
+    if (!section || section.eventId !== ticket.eventId) return { outcome: 'section_not_found', message: 'Section not found for this event', ticket };
+    if (!section.allowedOptions.some(o => o.eventOptionId === r.eventOptionId)) return { outcome: 'wrong_section', message: 'This ticket is not valid for this section', ticket };
+  }
+
+  // A section (or the whole event) locked to another device for offline scanning
+  // can't be scanned online — those scans would be invisible to the offline device.
+  const { blockingLock } = require('../utils/scanLocks') as { blockingLock(target: object, opts: object): Promise<any> };
+  const lock = await blockingLock({ eventId: ticket.eventId, optionId: r.eventOptionId }, { sectionId, deviceId: opts.deviceId || null });
+  if (lock) {
+    const scope = lock.section ? `"${lock.section.name}"` : 'This event';
+    return { outcome: 'locked', message: `${scope} is offline-locked by ${lock.user?.name || 'another device'}${lock.deviceName ? ` on ${lock.deviceName}` : ''}. Scan it on that device, or ask a supervisor to release the lock.` };
+  }
+
+  // Multi-day events: the check-in is for one session (the one picked, or today's), and
+  // what's left is counted per session.
+  let session: Session | null = null;
+  let schedule: { sessions: Session[] } | null = null;
+  const s = sessions();
+  if (r.scheduleType === 'sessions') {
+    schedule = await s.eventSchedule(ticket.eventId);
+    const found = s.ticketScanSession(schedule, schedule.sessions, r.pinnedSessionId, String(opts.sessionId || '').trim() || null, new Date(), r.chosenSessionIds);
+    if (!found.session) return { outcome: 'no_session', message: found.error || 'No session is open for check-in now', ticket };
+    session = found.session;
+  }
+  const label = session && schedule ? s.sessionLabel(session, schedule.sessions) : '';
+
+  const totalRedeemed = session
+    ? s.redeemedForSession(ticket.usages, session.id)
+    : ticket.usages.reduce((sum, u) => sum + (u.quantityRedeemed || 1), 0);
+  const remaining = (ticket.quantity || 1) - totalRedeemed;
+
+  if (remaining <= 0) {
+    if (session) {
+      const last = ticket.usages.filter(u => u.sessionId === session!.id).sort((a, b) => +new Date(b.scannedAt) - +new Date(a.scannedAt))[0];
+      const at = last ? new Date(last.scannedAt).toLocaleTimeString('en-ZA', { timeZone: s.TIMEZONE, hour: '2-digit', minute: '2-digit' }) : '';
+      return { outcome: 'already_used', message: `Already checked in for ${label}${at ? ` at ${at}` : ''}`, ticket };
+    }
+    return { outcome: 'already_used', message: 'Ticket has already been fully used', ticket };
+  }
+
+  // Youth events: no check-in without parental consent, unless a supervisor overrides.
+  const consentStatus = (await consent().consentStatusForTickets([ticket.id])).get(ticket.id) || 'not_required';
+  if (!['not_required', 'given'].includes(consentStatus)) {
+    const canOverride = ['admin', 'supervisor'].includes(actor.role);
+    if (!(opts.overrideConsent === true && canOverride)) {
+      const why = consentStatus === 'declined' ? 'Parental consent was declined' : consentStatus === 'pending' ? 'Parental consent is still pending' : 'Parental consent is missing';
+      return { outcome: 'consent_required', message: `${why} — this ticket can't be checked in.`, consentStatus, canOverride, ticket };
+    }
+    const { logAdminAction } = require('../utils/adminAudit') as { logAdminAction(entry: object): Promise<void> };
+    logAdminAction({ actorId: actor.id, actorRole: actor.role, action: 'consent_override', targetType: 'Ticket', targetId: ticket.id, metadata: { consentStatus, eventId: ticket.eventId }, ip });
+  }
+
+  // How many to check in this scan (defaults to all remaining)
+  const requestedQty = Math.trunc(Number(opts.qty)) || remaining;
+  const qtyToRedeem = Math.min(Math.max(1, requestedQty), remaining);
+  const newTotalRedeemed = totalRedeemed + qtyToRedeem;
+  const newRemaining = (ticket.quantity || 1) - newTotalRedeemed;
+
+  // The usage insert and the ticket's status don't depend on each other
+  const [ticketUsage] = await Promise.all([
+    prisma.ticketUsage.create({
+      data: { id: uuidv4(), ticketId: ticket.id, scannedById: actor.id, quantityRedeemed: qtyToRedeem, sessionId: session ? session.id : null },
+    }),
+    // A multi-session ticket is never "used up" — it's checked in again next session.
+    prisma.ticket.update({ where: { id: ticket.id }, data: { isUsed: session ? false : newRemaining <= 0, updatedAt: new Date() } }),
+  ]);
+
+  // Only Main Tickets trigger a check-in notification
+  if (ticket.registrationOption.eventOption.isMainTicket) {
+    (require('../utils/notifications') as { sendCheckInEmails(id: string, qty: number, total: number, left: number): Promise<unknown> })
+      .sendCheckInEmails(ticket.id, qtyToRedeem, newTotalRedeemed, newRemaining)
+      .catch(e => console.error('Failed to send check-in notification:', e));
+  }
+
+  return {
+    outcome: 'checked_in',
+    message: `Ticket scanned successfully${session ? ` for ${label}` : ''} (${qtyToRedeem} of ${ticket.quantity || 1} redeemed${newRemaining > 0 ? `, ${newRemaining} remaining` : ''})`,
+    session: session ? { id: session.id, label } : null,
+    ticketUsage,
+    ticket,
+    qtyRedeemed: qtyToRedeem,
+    totalRedeemed: newTotalRedeemed,
+    remaining: newRemaining,
+  };
+}
+
+/** The HTTP status and body v1 (/api/tickets/scan/:qrCode) has always answered for each outcome. */
+export function v1ScanResponse(result: ScanResult): { status: number; body: Record<string, unknown> } {
+  const { outcome, ...rest } = result;
+  switch (outcome) {
+    case 'checked_in': return { status: 200, body: rest };
+    case 'transferred': return { status: 410, body: { ...rest, code: 'TICKET_TRANSFERRED' } };
+    case 'locked': return { status: 423, body: { ...rest, code: 'SCAN_LOCKED' } };
+    case 'no_session': return { status: 400, body: { ...rest, code: 'NO_SESSION' } };
+    case 'already_used': return { status: 403, body: { ...rest, remaining: 0 } };
+    case 'consent_required': return { status: 403, body: { ...rest, code: 'CONSENT_REQUIRED' } };
+    default: return { status: 400, body: rest };
+  }
+}

backend/src/services/errors.ts

@@ -0,0 +1,26 @@
+/**
+ * An error from a service (src/services/*) with the HTTP status it means. v2 turns it into its
+ * error shape by the status (v2/errors.ts); v1 controllers keep answering as they always did —
+ * `v1Status` when v1 used a different status for it (e.g. 400 for a wrong password).
+ */
+export class ServiceError extends Error {
+  readonly statusCode: number;
+  /** Extra, e.g. a code the caller can switch on. */
+  readonly code?: string;
+  readonly v1Status?: number;
+
+  constructor(statusCode: number, message: string, code?: string, opts: { v1Status?: number } = {}) {
+    super(message);
+    this.statusCode = statusCode;
+    this.code = code;
+    this.v1Status = opts.v1Status;
+  }
+}
+
+export const fail = (statusCode: number, message: string, code?: string, opts?: { v1Status?: number }): never => {
+  throw new ServiceError(statusCode, message, code, opts);
+};
+
+/** The status a v1 controller answers for an error (its old one where it differs). */
+export const v1StatusOf = (error: { v1Status?: number; statusCode?: number } | null | undefined, fallback: number): number =>
+  error?.v1Status || error?.statusCode || fallback;

backend/src/services/payments.ts

@@ -0,0 +1,88 @@
+/**
+ * Paying a registration online (1.51.1). Moved from paymentController.createCheckout so
+ * POST /api/payments/checkout (v1) and POST /api/v2/registrations/:id/checkout share it.
+ */
+import { prisma } from '../v2/legacy';
+import { fail, ServiceError } from './errors';
+import type { Role } from './registrations';
+
+/* eslint-disable @typescript-eslint/no-explicit-any -- the JS helpers below aren't typed yet */
+const payments = require('../payments') as { MIN_ONLINE_AMOUNT: number };
+const { createRegistrationCheckout } = require('../payments/checkouts') as {
+  createRegistrationCheckout(registrationId: string, userId: string, opts: { successUrl?: string; cancelUrl?: string; failureUrl?: string; donationAmount?: number; amount?: number | null; provider?: string | null }): Promise<{
+    checkoutId: string; redirectUrl: string; provider: string; amount: number; registration: { id: string; eventId: string; eventTitle: string };
+  }>;
+};
+const pricing = require('../utils/pricing') as {
+  refreshPricingForRegistration(id: string): Promise<{ changed: boolean }>;
+  computeRegistrationTotalDue(registration: any, at: Date): number;
+};
+const { assertEventOpen } = require('../utils/cashupUtils') as { assertEventOpen(eventId: string): Promise<unknown> };
+
+export type CheckoutOptions = {
+  /** Pay only this much of the balance (staff taking part payments). */
+  amount?: number | null;
+  /** An optional donation added on top (the register form's "Donation amount"). */
+  donationAmount?: number | null;
+  provider?: string | null;
+  successUrl?: string;
+  cancelUrl?: string;
+  failureUrl?: string;
+};
+
+export type CheckoutResult =
+  | { priceUpdated: true; newTotal: number; message: string }
+  | { priceUpdated?: false; checkoutId: string; redirectUrl: string; provider: string; amount: number; registration: { id: string; eventId: string; eventTitle: string } };
+
+/**
+ * Starts an online payment for what's owed on a registration (the owner, or a supervisor or
+ * admin). If an early-bird price ran out since it was made, nothing is charged: the caller is
+ * told the new total to show first.
+ */
+export async function startRegistrationCheckout(registrationId: string, actor: { id: string; role: Role }, opts: CheckoutOptions = {}): Promise<CheckoutResult> {
+  const reg = await prisma.registration.findUnique({ where: { id: registrationId }, select: { userId: true, eventId: true, event: { select: { endDate: true } } } });
+  if (!reg) return fail(404, 'Registration not found');
+  const staffSide = actor.role === 'admin' || actor.role === 'supervisor';
+  if (reg.userId !== actor.id && !staffSide) fail(403, 'Not authorized to create checkout for this registration');
+  // If event is in the past, block self-service payment (mirrors the registration-edit block)
+  if (!staffSide && reg.event?.endDate && new Date(reg.event.endDate).getTime() < Date.now()) {
+    fail(400, 'This event has already ended; payment can no longer be made for this registration');
+  }
+  try {
+    await assertEventOpen(reg.eventId);
+  } catch (e: any) {
+    throw new ServiceError(e.message === 'Event not found' ? 404 : 400, e.message);
+  }
+
+  // Refresh early-bird pricing — updates priceSnapshot if any tier has expired or sold out.
+  // Must run before the balance is worked out so the checkout charges the right price.
+  const { changed } = await pricing.refreshPricingForRegistration(registrationId);
+  if (changed) {
+    const fresh = await prisma.registration.findUniqueOrThrow({
+      where: { id: registrationId },
+      include: { registrationOptions: { include: { eventOption: { include: { earlyBirdTiers: true } }, tranches: true } }, payments: true },
+    });
+    const newTotal = pricing.computeRegistrationTotalDue(fresh, new Date());
+    const totalPaid = fresh.payments.reduce((s, p) => s + p.amount, 0);
+    return {
+      priceUpdated: true,
+      newTotal: Math.max(0, newTotal - totalPaid),
+      message: 'One or more early-bird prices have changed since your registration was created. Please review the updated total before proceeding.',
+    };
+  }
+
+  const urls = { successUrl: opts.successUrl, cancelUrl: opts.cancelUrl, failureUrl: opts.failureUrl, provider: opts.provider ?? null };
+
+  // Part of the balance (supervisor payments page)
+  if (opts.amount !== undefined && opts.amount !== null && !isNaN(Number(opts.amount))) {
+    return createRegistrationCheckout(registrationId, actor.id, { ...urls, amount: Number(opts.amount) });
+  }
+
+  let donation = 0;
+  if (opts.donationAmount !== undefined && opts.donationAmount !== null) {
+    donation = Math.round(Number(opts.donationAmount) * 100) / 100;
+    if (!(donation >= 0) || donation > 100000) fail(400, 'Invalid donation amount');
+    if (donation > 0 && donation < payments.MIN_ONLINE_AMOUNT) fail(400, `Minimum donation is R${payments.MIN_ONLINE_AMOUNT}`);
+  }
+  return createRegistrationCheckout(registrationId, actor.id, { ...urls, donationAmount: donation });
+}

backend/src/services/registrations.ts

@@ -0,0 +1,497 @@
+/**
+ * Making and cancelling registrations (1.51.1). Moved here from registrationController.js so
+ * POST /api/registrations (v1) and POST /api/v2/registrations run the same code. Errors are
+ * ServiceErrors carrying their HTTP status.
+ */
+import { v4 as uuidv4 } from 'uuid';
+import { prisma } from '../v2/legacy';
+import { fail, ServiceError } from './errors';
+
+/* eslint-disable @typescript-eslint/no-explicit-any -- the JS helpers below aren't typed yet */
+const { generateTicketsForRegistration } = require('../utils/ticketUtils') as { generateTicketsForRegistration(id: string): Promise<unknown> };
+const pricing = require('../utils/pricing') as {
+  resolveOptionPrice(option: any, qty: number, buyer: any): Promise<{ price: number; tierId: string | null }>;
+  resolveVariantTierPrice(option: any, variantId: string, qty: number, buyer: any): Promise<{ price: number; tierId: string | null }>;
+  computeRegistrationTotalDue(registration: any, at: Date): number;
+  attachComputedTotals<T>(registration: T): T & { totalDueComputed: number };
+};
+const coupons = require('../utils/coupons') as {
+  buildCouponLines(registration: any): any[];
+  previewCoupon(args: { code: string; eventId: string; user: any; lines: any[] }): Promise<unknown>;
+  applyCouponToRegistration(args: { registrationId: string; code: string }): Promise<unknown>;
+  recalculateRegistrationDiscount(registrationId: string): Promise<number>;
+  releaseRegistrationCoupons(registrationId: string): Promise<unknown>;
+};
+const attendeesUtil = require('../utils/attendees') as {
+  lineKey(eventOptionId: string, variantId?: string | null): string;
+  validateAttendees(event: any, places: Record<string, number>, attendees: unknown, existing: Record<string, number>): any[];
+  createAttendees(registrationId: string, attendees: any[]): Promise<unknown>;
+  namedPlacesByKey(registrationId: string): Promise<Record<string, number>>;
+};
+const { findAccountByContact } = require('../utils/accountMatch') as { findAccountByContact(c: { email?: string; phone?: string }): Promise<{ user: { id: string } | null; conflict?: boolean }> };
+const { ensureConsentRequests } = require('../utils/consent') as { ensureConsentRequests(registrationId: string): Promise<unknown> };
+const { takenCount } = require('../utils/stock') as { takenCount(where: object, opts?: { excludeEntryId?: string | null }): Promise<number> };
+const waitlist = require('../utils/waitlist') as { findOfferByToken(token: string): Promise<any>; queueWaitlist(eventId: string): void };
+const { reservedOptionIds } = require('../utils/volunteers') as { reservedOptionIds(event: any): string[] };
+const { BUNDLE_APPS_INCLUDE } = require('../utils/bundles') as { BUNDLE_APPS_INCLUDE: any };
+const sessions = require('../utils/sessions') as {
+  registrationClosesAt(event: any, sessions: any[]): Date;
+  wholeCourseClosesAt(event: any, sessions: any[]): Date;
+  expandPickLines(event: any, options: any[], opts: { now: Date }): any[];
+  assertSessionCapacity(event: any, lines: any[], registrationId?: string, opts?: { excludeEntryId?: string }): Promise<void>;
+  mergeSessionIds(a: string[] | null | undefined, b: string[] | null | undefined): string[];
+};
+const { assertEventOpen } = require('../utils/cashupUtils') as { assertEventOpen(eventId: string, res?: unknown): Promise<unknown> };
+const { logAdminAction } = require('../utils/adminAudit') as { logAdminAction(entry: object): Promise<void> };
+
+export type Role = 'admin' | 'supervisor' | 'staff' | 'user';
+export type Actor = { id: string; role: Role; email?: string } | null;
+
+export const TICKET_DELIVERY = ['payer', 'each'] as const;
+export const isStaffRole = (role: string | undefined | null): boolean => ['admin', 'supervisor', 'staff'].includes(String(role));
+
+// Named attendees for API responses, with whether their ticket has been issued/used.
+export const ATTENDEES_INCLUDE = {
+  orderBy: { order: 'asc' as const },
+  include: {
+    ticket: { select: { id: true, isUsed: true } },
+    // Latest consent request (youth events) — it decides check-in.
+    consentRequests: { orderBy: { createdAt: 'desc' as const }, take: 1, select: { id: true, status: true, respondedAt: true, lastSentAt: true, textVersion: true } },
+  },
+};
+
+// Active coupon on a registration, for API responses (the discount itself is
+// Registration.discountTotal).
+export const ACTIVE_COUPONS_INCLUDE = {
+  where: { releasedAt: null },
+  select: { id: true, discountAmount: true, createdAt: true, coupon: { select: { id: true, code: true, type: true, value: true, description: true } } },
+};
+
+// Youth events: send parental consent requests for any new under-18 attendees. Runs in
+// the background so a slow mail/WhatsApp send never holds up the registration.
+export function queueConsentRequests(registrationId: string): void {
+  ensureConsentRequests(registrationId).catch((e: any) => console.error('[consent] Failed to send requests:', e?.message || e));
+}
+
+type Line = { eventOptionId: string; variantId?: string | null; sessionId?: string | null; quantity: number | string };
+
+/**
+ * Places each line will have once `requested` is added to `existingLines` — used to
+ * check attendee names against what's actually being bought.
+ */
+export function placesAfter(existingLines: Line[] | undefined, requested: Line[] | undefined): Record<string, number> {
+  const out: Record<string, number> = {};
+  // Picked-session lines take no attendee names.
+  for (const l of [...(existingLines || []), ...(requested || [])].filter(x => !x.sessionId)) {
+    const k = attendeesUtil.lineKey(l.eventOptionId, l.variantId);
+    out[k] = (out[k] || 0) + Number(l.quantity || 0);
+  }
+  return out;
+}
+
+/**
+ * Coupon lines for options that haven't been saved yet, so a code can be checked
+ * before anything is created. Mirrors buildCouponLines for one tranche per option.
+ */
+export function pendingCouponLines(event: { eventOptions: { id: string }[] }, resolvedOptions: any[]): any[] {
+  return coupons.buildCouponLines({
+    registrationOptions: resolvedOptions.map(o => ({
+      eventOptionId: o.eventOptionId,
+      variantId: o.variantId || null,
+      quantity: o.quantity,
+      eventOption: event.eventOptions.find(eo => eo.id === o.eventOptionId),
+      tranches: [{ quantity: o.quantity, priceSnapshot: o.priceSnapshot, appliedTierId: o.appliedTierId }],
+    })),
+  });
+}
+
+/**
+ * Price one requested option for this buyer: early-bird tiers, then variant/option price,
+ * then the staff price for Staff and above. Returns { priceSnapshot, appliedTierId }.
+ */
+export async function priceRequestedOption(eventOption: any, variantId: string | null, qty: number, buyer: any): Promise<{ priceSnapshot: number; appliedTierId: string | null }> {
+  try {
+    const resolved = variantId
+      ? await pricing.resolveVariantTierPrice(eventOption, variantId, qty, buyer)
+      : await pricing.resolveOptionPrice(eventOption, qty, buyer);
+    return { priceSnapshot: resolved.price, appliedTierId: resolved.tierId };
+  } catch {
+    const variant = variantId ? (eventOption.variants || []).find((v: any) => v.id === variantId) : null;
+    const price = variant && variant.price !== null && variant.price !== undefined ? variant.price : eventOption.price;
+    return { priceSnapshot: Number(price || 0), appliedTierId: null };
+  }
+}
+
+/**
+ * Check overall stock availability for an EventOption. Places held for live waitlist
+ * offers count as taken, except the offer being claimed (`excludeEntryId`).
+ */
+export async function checkOptionStock(option: { id: string; stockLimit: number }, requestedQty: number, excludeEntryId: string | null = null, sessionId: string | null = null) {
+  if (!option.stockLimit || option.stockLimit === 0) return { available: true, remaining: null as number | null };
+  const remaining = option.stockLimit - await takenCount({ eventOptionId: option.id, sessionId }, { excludeEntryId });
+  return { available: remaining >= requestedQty, remaining };
+}
+
+/** Check stock availability for a specific variant (same rules as checkOptionStock). */
+export async function checkVariantStock(variant: { id: string; eventOptionId: string; stockLimit: number | null }, requestedQty: number, excludeEntryId: string | null = null, sessionId: string | null = null) {
+  if (!variant.stockLimit || variant.stockLimit === 0) return { available: true, remaining: null as number | null };
+  const remaining = variant.stockLimit - await takenCount({ eventOptionId: variant.eventOptionId, variantId: variant.id, sessionId }, { excludeEntryId });
+  return { available: remaining >= requestedQty, remaining };
+}
+
+export type RequestedOption = { eventOptionId: string; quantity: number; variantId?: string | null; sessionIds?: string[] };
+export type CreateRegistrationInput = {
+  eventId: string;
+  options: RequestedOption[];
+  guestName?: string;
+  guestEmail?: string;
+  guestPhone?: string;
+  couponCode?: string;
+  attendees?: unknown[];
+  ticketDelivery?: string;
+  waitlistToken?: string;
+  analyticsSessionId?: string;
+};
+
+const FULL_INCLUDE = {
+  registrationOptions: { include: { eventOption: true, tranches: true } },
+  event: true,
+  user: { select: { id: true, name: true, email: true, phoneNumber: true } },
+} as const;
+
+/**
+ * Registers someone for an event (online, a guest for a free event, or with a waitlist link):
+ * checks the event is open, prices each line (early-bird, variant, staff price), checks stock
+ * and session places, adds to an existing registration for the same person and event, applies
+ * bundle deals and a coupon, and issues tickets straight away when nothing is owed.
+ */
+export async function createRegistration(input: CreateRegistrationInput, actor: Actor) {
+  try {
+    return await create(input, actor);
+  } catch (e: any) {
+    // The helpers (coupons, attendee names, session places…) throw plain Errors written for
+    // people; like v1, those are the caller's problem (400) unless they carry a status.
+    if (e instanceof ServiceError || /^P\d{4}$/.test(String(e?.code || ''))) throw e;
+    throw new ServiceError(e?.statusCode || 400, e?.message || 'Registration failed');
+  }
+}
+
+async function create(input: CreateRegistrationInput, actor: Actor) {
+  const { eventId, options, guestName, guestEmail, guestPhone, couponCode, attendees, ticketDelivery, waitlistToken, analyticsSessionId } = input;
+
+  const event = await prisma.event.findUnique({
+    where: { id: eventId },
+    include: { eventOptions: { include: { earlyBirdTiers: true, variants: true } }, sessions: true },
+  });
+  if (!event) return fail(404, 'Event not found');
+  if (!event.isActive) return fail(400, 'Event is not active');
+  if (event.cashupStatus === 'closed') return fail(400, 'This event is closed and no longer accepting registrations.');
+
+  // A waitlist claim link: its token identifies the person and releases the places
+  // held for them. It works without logging in, the same way a consent link does.
+  let waitlistOffer: any = null;
+  if (waitlistToken) {
+    waitlistOffer = await waitlist.findOfferByToken(waitlistToken);
+    if (!waitlistOffer || waitlistOffer.eventId !== eventId) fail(400, 'This waitlist link is not valid.');
+    if (waitlistOffer.status !== 'offered') fail(400, `This waitlist offer has ${waitlistOffer.status === 'claimed' ? 'already been used' : 'expired'}.`);
+    if (new Date(waitlistOffer.offerExpiresAt) < new Date()) fail(400, 'This waitlist offer has expired.');
+    if (actor && actor.id !== waitlistOffer.userId) fail(403, 'This waitlist offer belongs to someone else.');
+  }
+
+  // Enforce auth unless event explicitly opts out
+  if (event.requiresAuth !== false && !actor && !waitlistOffer) fail(401, 'Authentication required for this event');
+
+  // Unauthenticated guest registration is only permitted for free events
+  if (!actor && !waitlistOffer) {
+    const requestedTotal = (options || []).reduce((sum, opt) => {
+      const eo = event.eventOptions.find(o => o.id === opt.eventOptionId);
+      return sum + ((eo?.price || 0) * (opt.quantity || 1));
+    }, 0);
+    if (requestedTotal > 0) fail(400, 'Guest registration is only available for free events. Please create an account to pay for tickets.');
+  }
+
+  // Resolve userId — authenticated or guest
+  let userId: string;
+  if (actor) {
+    userId = actor.id;
+  } else if (waitlistOffer) {
+    userId = waitlistOffer.userId;
+  } else {
+    // Guest registration: find existing user by email or create inactive placeholder
+    if (!guestEmail || !guestName) return fail(400, 'Name and email are required for unauthenticated registration');
+    const match = await findAccountByContact({ email: guestEmail, phone: guestPhone });
+    if (match.conflict) fail(409, 'This email and phone number belong to two different accounts. Please log in, or check your details.');
+    if (match.user) {
+      userId = match.user.id;
+    } else {
+      const newGuest = await prisma.user.create({
+        data: { id: uuidv4(), name: guestName, email: guestEmail, password: '', phoneNumber: guestPhone || null, isActive: false, updatedAt: new Date() },
+      });
+      userId = newGuest.id;
+    }
+  }
+
+  // Enforce registration cutoff for public registrations (multi-day events close when
+  // the first session starts, or later with late joining — see utils/sessions.js).
+  const now = new Date();
+  if (now >= sessions.registrationClosesAt(event, event.sessions)) fail(400, 'Registration is closed for this event');
+
+  if (!options || !Array.isArray(options) || options.length === 0) fail(400, 'At least one option must be selected');
+
+  // "Pick sessions" options become one line per chosen session; whole-course tickets
+  // on such an event still close when the whole course does.
+  const lines = sessions.expandPickLines(event, options, { now });
+  // (An all-sessions ticket with sessions ticked is checked per session instead.)
+  if (event.attendanceMode === 'pick' && lines.some(l => !l.sessionId && !l.sessionIds?.length) && now >= sessions.wholeCourseClosesAt(event, event.sessions)) {
+    fail(400, 'Whole-course tickets are no longer on sale — choose the sessions you want instead.');
+  }
+  await sessions.assertSessionCapacity(event, lines, undefined, { excludeEntryId: waitlistOffer?.id });
+
+  // Validate each option and resolve prices / check stock. Options are independent of each
+  // other, so resolve them concurrently. The kids check-in and volunteer tickets are handed
+  // out by staff, never sold.
+  const reserved = new Set(isStaffRole(actor?.role) ? [] : reservedOptionIds(event));
+  const buyerFor = async () => actor || (waitlistOffer ? await prisma.user.findUnique({ where: { id: waitlistOffer.userId }, select: { id: true, role: true } }) : null);
+  const resolvedOptions = await Promise.all(lines.map(async (option: any) => {
+    const eventOption = event.eventOptions.find(eo => eo.id === option.eventOptionId);
+    if (!eventOption || reserved.has(eventOption.id)) fail(400, `Option with ID ${option.eventOptionId} not found for this event`);
+    if (!option.quantity || option.quantity < 1) fail(400, 'Quantity must be at least 1');
+    const qty = option.quantity;
+
+    // (A failing count doesn't block the sale — only a real shortage does.)
+    const stockCheck = await checkOptionStock(eventOption!, qty, waitlistOffer?.id, option.sessionId).catch(() => ({ available: true, remaining: null }));
+    if (!stockCheck.available) fail(400, `"${eventOption!.name}" is sold out or does not have enough stock (${stockCheck.remaining ?? 0} remaining).`);
+
+    const variantId: string | null = option.variantId || null;
+    if (variantId) {
+      const variant = (eventOption!.variants || []).find(v => v.id === variantId);
+      if (!variant) return fail(400, `Variant not found for option "${eventOption!.name}"`);
+      const vStock = await checkVariantStock(variant, qty, waitlistOffer?.id, option.sessionId).catch(() => ({ available: true, remaining: null }));
+      if (!vStock.available) fail(400, `Variant "${variant.name}" is sold out (${vStock.remaining ?? 0} remaining).`);
+    }
+
+    // Variant-level tiers take priority, then option-level tiers, then base prices, then
+    // the staff price for Staff and above.
+    const { priceSnapshot, appliedTierId } = await priceRequestedOption(eventOption, variantId, qty, await buyerFor());
+    return { ...option, variantId, appliedTierId, priceSnapshot: priceSnapshot ?? eventOption!.price };
+  }));
+
+  // Check a coupon code before anything is saved, so a bad code doesn't leave a
+  // half-made registration behind. It's applied (and re-checked under a lock) below.
+  if (couponCode) {
+    const buyer = actor ? { id: actor.id, role: actor.role, email: actor.email } : null;
+    await coupons.previewCoupon({ code: couponCode, eventId, user: buyer, lines: pendingCouponLines(event, resolvedOptions) });
+  }
+
+  // Check for existing non-cancelled registration for this user+event → merge instead
+  const existingReg = await prisma.registration.findFirst({
+    where: { userId, eventId, status: { not: 'cancelled' } },
+    include: { registrationOptions: true },
+  });
+
+  // Attendee names are checked against the places the registration will have after
+  // this purchase, counting names already given on an existing registration.
+  const cleanAttendees = attendeesUtil.validateAttendees(
+    event,
+    placesAfter(existingReg?.registrationOptions, resolvedOptions),
+    attendees,
+    existingReg ? await attendeesUtil.namedPlacesByKey(existingReg.id) : {},
+  );
+  if (ticketDelivery !== undefined && !(TICKET_DELIVERY as readonly string[]).includes(ticketDelivery)) fail(400, "ticketDelivery must be 'payer' or 'each'");
+
+  let registrationId: string;
+  let isNewRegistration = false;
+  if (existingReg) {
+    // Merge: add a new price tranche per requested option into the existing registration.
+    // Never overwrite an existing row's priceSnapshot/quantity in place — that would blend
+    // tickets bought at different early-bird prices into a single (wrong) price. Each
+    // purchase gets its own tranche; the RegistrationOption row stays a maintained aggregate.
+    for (const opt of resolvedOptions) {
+      // Match on eventOptionId + variantId (+ session, for picked sessions) for correct row
+      const existing = existingReg.registrationOptions.find(
+        ro => ro.eventOptionId === opt.eventOptionId && (ro.variantId || null) === (opt.variantId || null) && (ro.sessionId || null) === (opt.sessionId || null),
+      );
+      if (existing) {
+        await prisma.$transaction([
+          prisma.registrationOptionTranche.create({
+            data: { id: uuidv4(), registrationOptionId: existing.id, quantity: opt.quantity, priceSnapshot: opt.priceSnapshot, appliedTierId: opt.appliedTierId || null },
+          }),
+          prisma.registrationOption.update({
+            where: { id: existing.id },
+            data: { quantity: existing.quantity + opt.quantity, priceSnapshot: opt.priceSnapshot, appliedTierId: opt.appliedTierId || null, ...(existing.sessionId ? {} : { sessionIds: sessions.mergeSessionIds(existing.sessionIds, opt.sessionIds) }) },
+          }),
+        ]);
+      } else {
+        await prisma.registrationOption.create({
+          data: {
+            id: uuidv4(),
+            registrationId: existingReg.id,
+            eventOptionId: opt.eventOptionId,
+            quantity: opt.quantity,
+            variantId: opt.variantId || null,
+            sessionId: opt.sessionId || null,
+            sessionIds: opt.sessionIds || [],
+            appliedTierId: opt.appliedTierId || null,
+            priceSnapshot: opt.priceSnapshot,
+            tranches: { create: [{ id: uuidv4(), quantity: opt.quantity, priceSnapshot: opt.priceSnapshot, appliedTierId: opt.appliedTierId || null }] },
+          },
+        });
+      }
+    }
+    // Only downgrade from paid if the newly added items actually cost something
+    const newItemsCost = resolvedOptions.reduce((sum, opt) => sum + ((opt.priceSnapshot || 0) * (opt.quantity || 0)), 0);
+    await prisma.registration.update({
+      where: { id: existingReg.id },
+      data: existingReg.status === 'paid' && newItemsCost > 0 ? { status: 'partial_paid', updatedAt: new Date() } : { updatedAt: new Date() },
+    });
+    registrationId = existingReg.id;
+  } else {
+    isNewRegistration = true;
+    registrationId = uuidv4();
+    await prisma.registration.create({
+      data: {
+        id: registrationId,
+        userId,
+        eventId,
+        updatedAt: new Date(),
+        registrationOptions: {
+          create: resolvedOptions.map(option => ({
+            id: uuidv4(),
+            eventOptionId: option.eventOptionId,
+            quantity: option.quantity,
+            variantId: option.variantId || null,
+            sessionId: option.sessionId || null,
+            sessionIds: option.sessionIds || [],
+            appliedTierId: option.appliedTierId || null,
+            priceSnapshot: option.priceSnapshot,
+            tranches: { create: [{ id: uuidv4(), quantity: option.quantity, priceSnapshot: option.priceSnapshot, appliedTierId: option.appliedTierId || null }] },
+          })),
+        },
+      },
+    });
+  }
+
+  if (cleanAttendees.length > 0) {
+    await attendeesUtil.createAttendees(registrationId, cleanAttendees);
+    queueConsentRequests(registrationId);
+  }
+  if (waitlistOffer) {
+    await prisma.waitlistEntry.update({
+      where: { id: waitlistOffer.id },
+      data: { status: 'claimed', claimedAt: new Date(), registrationId, offerTokenHash: null },
+    });
+  }
+  if (ticketDelivery) {
+    await prisma.registration.update({ where: { id: registrationId }, data: { ticketDelivery: ticketDelivery as 'payer' | 'each' } });
+  }
+
+  // Bundle deals, then the coupon (or re-work an existing one over the merged items).
+  let couponError: string | null = null;
+  await coupons.recalculateRegistrationDiscount(registrationId);
+  if (couponCode) {
+    try {
+      await coupons.applyCouponToRegistration({ registrationId, code: couponCode });
+    } catch (e: any) {
+      // Lost a race for the last use since the check above — keep the registration.
+      if (!e.isCouponError) throw e;
+      couponError = e.message;
+    }
+  }
+  const load = () => prisma.registration.findUniqueOrThrow({
+    where: { id: registrationId },
+    include: { ...FULL_INCLUDE, couponRedemptions: ACTIVE_COUPONS_INCLUDE, bundleApplications: BUNDLE_APPS_INCLUDE, attendees: ATTENDEES_INCLUDE },
+  });
+  let registration = await load();
+
+  // Nothing owed: mark paid and issue tickets (unless a required form comes first).
+  let emailTicketsAfter = false;
+  try {
+    if (pricing.computeRegistrationTotalDue(registration, new Date()) === 0) {
+      if (registration.status !== 'paid') {
+        await prisma.registration.update({ where: { id: registrationId }, data: { status: 'paid', updatedAt: new Date() } });
+      }
+      const form = await prisma.eventForm.findUnique({ where: { eventId: registration.eventId } }).catch(() => null);
+      if (!(form && form.isRequired)) {
+        // Same generator as paid registrations: a ticket per named attendee, and one
+        // shared quantity ticket for the rest of each line.
+        await generateTicketsForRegistration(registrationId);
+        emailTicketsAfter = true;
+      }
+      registration = { ...registration, status: 'paid' };
+    }
+  } catch {
+    // ignore errors in auto-generation path; manual generation remains available
+  }
+
+  // Fire-and-forget: registration email first, then tickets (guarantees order)
+  const notifications = require('../utils/notifications') as { sendRegistrationEmails(id: string): Promise<unknown>; sendRegistrationUpdatedEmails(id: string): Promise<unknown> };
+  const ownerId = registration.userId;
+  void (async () => {
+    try {
+      if (isNewRegistration) await notifications.sendRegistrationEmails(registrationId);
+      else await notifications.sendRegistrationUpdatedEmails(registrationId);
+    } catch (e) { console.error('Failed to send registration emails:', e); }
+    if (emailTicketsAfter) {
+      try {
+        const { emailTickets } = require('../controllers/ticketController') as { emailTickets(req: unknown, res: unknown): Promise<unknown> };
+        const res: { status(): unknown; json(): void } = { status: () => res, json: () => {} };
+        await emailTickets({ user: { id: ownerId }, body: { registrationId } }, res);
+      } catch (e) { console.error('Error emailing tickets for free registration:', e); }
+    }
+  })();
+
+  // Funnel: this registration came from a tracked (cookie-consented) visit.
+  if (analyticsSessionId) {
+    const { recordSubmit } = require('../utils/analytics') as { recordSubmit(reg: unknown, sessionId: string): Promise<unknown> };
+    recordSubmit(registration, analyticsSessionId).catch((e: any) => console.warn('[analytics] submit not recorded:', e?.message || e));
+  }
+
+  return { registration: pricing.attachComputedTotals(registration), isNew: isNewRegistration, couponError };
+}
+
+/**
+ * Cancels a registration: the owner (not after the event, not once anything is paid) or an
+ * admin. Releases its coupon and offers its places to the waitlist.
+ */
+export async function cancelRegistration(registrationId: string, actor: { id: string; role: Role }, ip?: string) {
+  const registration = await prisma.registration.findUnique({
+    where: { id: registrationId },
+    include: { event: { select: { endDate: true } } },
+  });
+  if (!registration) return fail(404, 'Registration not found');
+
+  if (registration.userId !== actor.id && actor.role !== 'admin') fail(403, 'Not authorized to cancel this registration');
+
+  // If event is in the past, block self-cancellation (mirrors the edit block)
+  if (actor.role !== 'admin' && registration.event?.endDate && new Date(registration.event.endDate).getTime() < Date.now()) {
+    fail(400, 'This event has already ended; registration can no longer be cancelled');
+  }
+
+  try {
+    await assertEventOpen(registration.eventId);
+  } catch (e: any) {
+    throw new ServiceError(e.message === 'Event not found' ? 404 : 400, e.message);
+  }
+
+  if (registration.status === 'cancelled') fail(400, 'Registration is already cancelled');
+
+  // Non-admins cannot cancel a registration that has payments against it
+  if (actor.role !== 'admin') {
+    const paymentCount = await prisma.payment.count({ where: { registrationId: registration.id, amount: { gt: 0 } } });
+    if (paymentCount > 0) fail(403, 'This registration has payments recorded against it and cannot be self-cancelled. Please contact the organisation for assistance.');
+  }
+
+  const updated = await prisma.registration.update({ where: { id: registrationId }, data: { status: 'cancelled', updatedAt: new Date() } });
+  await coupons.releaseRegistrationCoupons(registrationId);
+  waitlist.queueWaitlist(registration.eventId);
+
+  // Only log when staff cancels on someone else's behalf — a routine self-service
+  // cancellation isn't an admin action worth cluttering the audit trail with.
+  if (registration.userId !== actor.id) {
+    logAdminAction({
+      actorId: actor.id, actorRole: actor.role, action: 'registration_cancelled', targetType: 'Registration', targetId: registrationId,
+      metadata: { registrationOwnerId: registration.userId }, ip,
+    });
+  }
+  return updated;
+}

backend/src/v2/index.ts

@@ -7,6 +7,9 @@ import auth from '../middleware/authMiddleware';
 // Resources: importing one registers its routes.
 import './resources/events';
 import './resources/me';
+import './resources/registrations';
+import './resources/checkin';
+import './resources/auth';
 
 const pkg = require('../../package.json') as { version: string };
 

backend/src/v2/resources/auth.ts

@@ -0,0 +1,105 @@
+import { z } from 'zod';
+import type { Request } from 'express';
+import { defineRoute } from '../route';
+import { single } from '../paging';
+import { id } from '../schemas';
+import auth from '../../middleware/authMiddleware';
+import { signUp, logIn, verifyLoginCode, type Session } from '../../services/auth';
+
+const requestInfo = (req: Request) => {
+  const { getClientIp } = require('../../utils/requestUtils') as { getClientIp(req: unknown): string };
+  return { ip: getClientIp(req), userAgent: req.headers['user-agent'] };
+};
+
+const session = z.object({
+  status: z.literal('signed_in'),
+  token: z.string().describe('Send as `Authorization: Bearer <token>`'),
+  user: z.object({ id, name: z.string(), email: z.string(), role: z.enum(['admin', 'supervisor', 'staff', 'user']) }),
+  newsPromptPending: z.boolean().describe('Ask once whether they want News & announcements'),
+  noticePromptPending: z.union([z.literal(false), z.enum(['first', 'updated'])]).describe('A privacy notice they must accept: never accepted (first) or a newer version (updated)'),
+  deviceToken: z.string().optional().describe('With rememberDevice: send it with the next login to skip the code on this device'),
+});
+
+const toSession = (s: Session): z.input<typeof session> => ({
+  status: 'signed_in',
+  token: s.token,
+  user: { id: s.id, name: s.name, email: s.email, role: s.role as 'admin' | 'supervisor' | 'staff' | 'user' },
+  newsPromptPending: s.newsPromptPending,
+  noticePromptPending: s.noticePromptPending,
+  ...(s.deviceToken ? { deviceToken: s.deviceToken } : {}),
+});
+
+export const signup = defineRoute({
+  method: 'post',
+  path: '/auth/signup',
+  tag: 'Accounts',
+  summary: 'Create an account',
+  description: 'Signs the new account in straight away. `acceptTerms` must be true (the Terms of Use and Privacy Policy); `newsOptIn` is the unticked "News & announcements" box.',
+  access: 'public',
+  status: 201,
+  body: z.object({
+    name: z.string().trim().min(1).max(200),
+    email: z.email().max(200),
+    password: z.string().min(8).max(200),
+    phone: z.string().trim().max(40).optional(),
+    notificationPreference: z.enum(['email', 'whatsapp', 'both']).optional().describe('WhatsApp needs a valid South African number; otherwise email is used'),
+    newsOptIn: z.boolean().optional(),
+    acceptTerms: z.literal(true),
+  }),
+  response: single(session),
+  async handler({ body, req }) {
+    const made = await signUp({ name: body.name, email: body.email, password: body.password, phoneNumber: body.phone, notificationPreference: body.notificationPreference, newsOptIn: body.newsOptIn }, requestInfo(req));
+    return { data: { status: 'signed_in' as const, token: made.token, user: { id: made.id, name: made.name, email: made.email, role: made.role }, newsPromptPending: false, noticePromptPending: false as const } };
+  },
+});
+
+export const login = defineRoute({
+  method: 'post',
+  path: '/auth/login',
+  tag: 'Accounts',
+  summary: 'Log in',
+  description: [
+    'With an email address or phone number. Five wrong passwords lock the account for five minutes (`RATE_LIMITED`).',
+    'With two-factor authentication (always for supervisors and admins), the answer is `code_required`: a code was sent by email or WhatsApp — finish with `POST /auth/login/code`.',
+  ].join('\n\n'),
+  access: 'public',
+  middleware: [auth.loginLimiter],
+  body: z.object({
+    identifier: z.string().trim().min(1).max(200).describe('Email address or phone number'),
+    password: z.string().min(1).max(200),
+    deviceToken: z.string().max(500).optional().describe('From an earlier login with rememberDevice'),
+  }),
+  response: single(z.discriminatedUnion('status', [
+    session,
+    z.object({
+      status: z.literal('code_required'),
+      challengeId: z.string(),
+      method: z.enum(['email', 'whatsapp']),
+      destination: z.string().nullable().describe('Where the code went, partly hidden'),
+      enrolling: z.boolean().describe('true = this turns two-factor on (required for the role)'),
+    }),
+  ])),
+  async handler({ body, req }) {
+    const result = await logIn(body, requestInfo(req));
+    if (result.status === 'signed_in') return { data: toSession(result.session) };
+    return { data: { status: 'code_required' as const, challengeId: result.challenge.challengeId, method: result.challenge.method as 'email' | 'whatsapp', destination: result.challenge.destination ?? null, enrolling: result.enrolling } };
+  },
+});
+
+export const loginCode = defineRoute({
+  method: 'post',
+  path: '/auth/login/code',
+  tag: 'Accounts',
+  summary: 'Finish logging in with the code',
+  access: 'public',
+  middleware: [auth.loginLimiter],
+  body: z.object({
+    challengeId: z.string().min(1).max(100),
+    code: z.string().trim().min(4).max(12),
+    rememberDevice: z.boolean().optional().describe('Skip the code on this device next time (30 days)'),
+  }),
+  response: single(session),
+  async handler({ body, req }) {
+    return { data: toSession(await verifyLoginCode(body, requestInfo(req))) };
+  },
+});

backend/src/v2/resources/checkin.ts

@@ -0,0 +1,130 @@
+import { z } from 'zod';
+import type { Request } from 'express';
+import { defineRoute } from '../route';
+import { ApiError } from '../errors';
+import { single } from '../paging';
+import { id } from '../schemas';
+import { previewScan, scanTicket, type ScanTicket } from '../../services/checkin';
+
+const OUTCOMES = ['checked_in', 'already_used', 'consent_required', 'wrong_event', 'wrong_section', 'section_not_found', 'no_session', 'locked', 'transferred'] as const;
+
+const qrParams = z.object({ qrCode: z.string().min(1).max(200).describe('The code in the ticket\'s QR') });
+
+/**
+ * Campus-scoped staff may only check in tickets for their campuses' events (and church-wide
+ * ones) — the same rule as v1's scopeEvent({ resolve: 'ticketQr', nameCampus: true }).
+ */
+async function assertTicketCampus(req: Request, qrCode: string) {
+  const cs = require('../../utils/campusScope') as {
+    scopeFor(req: unknown): Promise<object | null>;
+    eventOf(resolve: string, value: string): Promise<{ campusId: string | null; campusName?: string | null } | null>;
+    canView(scope: object, campusId: string | null): boolean;
+  };
+  const scope = await cs.scopeFor(req);
+  if (!scope) return;
+  const ev = await cs.eventOf('ticketQr', qrCode);
+  if (ev && !cs.canView(scope, ev.campusId)) throw new ApiError('FORBIDDEN', `This ticket is for an event at ${ev.campusName || 'another campus'}.`);
+}
+
+const ticketInfo = z.object({
+  id,
+  eventId: id,
+  eventTitle: z.string().nullable(),
+  ticketName: z.string().nullable().describe('The ticket option, e.g. "Adult"'),
+  quantity: z.number().int().describe('People on this ticket'),
+});
+const toTicketInfo = (t: ScanTicket) => ({ id: t.id, eventId: t.eventId, eventTitle: t.event.title ?? null, ticketName: t.registrationOption.eventOption.name ?? null, quantity: t.quantity });
+
+const sessionRef = z.object({ id, label: z.string() });
+
+export const preview = defineRoute({
+  method: 'get',
+  path: '/checkin/:qrCode',
+  tag: 'Check-in',
+  summary: 'Look a ticket up before checking it in',
+  description: 'Who it is for, how many are left to check in (for today\'s session on multi-day events, or `sessionId`), and parental consent. Nothing is changed.',
+  access: 'staff',
+  campusScope: 'event:ticketQr:view (assertTicketCampus)',
+  params: qrParams,
+  query: z.object({ sessionId: id.optional().describe('Multi-day events: the session (default: today\'s)') }),
+  response: single(z.object({
+    outcome: z.enum(['found', 'transferred']),
+    message: z.string().nullable().describe('For a transferred ticket: who has it now'),
+    ticket: z.object({
+      id,
+      eventId: id,
+      eventTitle: z.string().nullable(),
+      ticketName: z.string().nullable(),
+      variant: z.string().nullable(),
+      holder: z.string().nullable().describe('The attendee named on it, or the person who registered'),
+      quantity: z.number().int(),
+      remaining: z.number().int().describe('Still to check in (this session, on multi-day events)'),
+      session: sessionRef.nullable(),
+      sessionError: z.string().nullable().describe('Why no session is open for check-in now'),
+      consentStatus: z.string().describe('not_required, given, pending, declined or missing'),
+    }).nullable(),
+  })),
+  async handler({ params, query, req }) {
+    await assertTicketCampus(req, params.qrCode);
+    const result = await previewScan(params.qrCode, { sessionId: query.sessionId ?? null });
+    if (result.outcome === 'transferred') return { data: { outcome: 'transferred' as const, message: result.message, ticket: null } };
+    const t = result.ticket;
+    return {
+      data: {
+        outcome: 'found' as const,
+        message: null,
+        ticket: {
+          id: t.id, eventId: t.eventId, eventTitle: t.event.title ?? null, ticketName: t.registrationOption.eventOption.name ?? null,
+          variant: t.registrationOption.variant?.name ?? null, holder: t.attendee?.name ?? t.user.name ?? null, quantity: t.quantity,
+          remaining: t.remaining, session: t.session, sessionError: t.sessionError, consentStatus: t.consentStatus,
+        },
+      },
+    };
+  },
+});
+
+export const scan = defineRoute({
+  method: 'post',
+  path: '/checkin/:qrCode',
+  tag: 'Check-in',
+  summary: 'Check a ticket in',
+  description: [
+    'Checks in everyone left on the ticket, or `people`. Every normal result is a 200 with an `outcome`:',
+    '`checked_in`, `already_used`, `consent_required` (a supervisor can resend with `overrideConsent`, which is logged), `wrong_event`, `wrong_section`, `section_not_found`, `no_session` (multi-day: nothing open now), `locked` (offline-locked to another device) or `transferred` (handed on; `message` says to whom).',
+    'An unknown code is `NOT_FOUND`.',
+  ].join('\n\n'),
+  access: 'staff',
+  campusScope: 'event:ticketQr:view (assertTicketCampus)',
+  params: qrParams,
+  body: z.object({
+    eventId: id.optional().describe('Refuse tickets for any other event'),
+    sectionId: id.optional().describe('Only tickets valid for this section'),
+    sessionId: id.optional().describe('Multi-day events: the session (default: today\'s)'),
+    people: z.number().int().min(1).max(10000).optional().describe('How many to check in (default: everyone left)'),
+    overrideConsent: z.boolean().optional(),
+    deviceId: z.string().max(200).optional().describe('This scanner, so its own offline lock doesn\'t block it'),
+  }),
+  response: single(z.object({
+    outcome: z.enum(OUTCOMES),
+    message: z.string(),
+    ticket: ticketInfo.nullable(),
+    checkedIn: z.number().int().describe('People checked in by this request (0 unless checked_in)'),
+    remaining: z.number().int().nullable().describe('Still to check in afterwards'),
+    session: sessionRef.nullable(),
+    consentStatus: z.string().nullable(),
+    canOverride: z.boolean().describe('consent_required: whether you may override'),
+  })),
+  async handler({ params, body, user, req }) {
+    await assertTicketCampus(req, params.qrCode);
+    const { getClientIp } = require('../../utils/requestUtils') as { getClientIp(req: unknown): string };
+    const r = await scanTicket(params.qrCode, user!, {
+      eventId: body.eventId, sectionId: body.sectionId, sessionId: body.sessionId, deviceId: body.deviceId,
+      qty: body.people ?? null, overrideConsent: body.overrideConsent,
+    }, getClientIp(req));
+    const base = { outcome: r.outcome, message: r.message, ticket: 'ticket' in r ? toTicketInfo(r.ticket) : null, checkedIn: 0, remaining: null as number | null, session: null as { id: string; label: string } | null, consentStatus: null as string | null, canOverride: false };
+    if (r.outcome === 'checked_in') return { data: { ...base, checkedIn: r.qtyRedeemed, remaining: r.remaining, session: r.session } };
+    if (r.outcome === 'already_used') return { data: { ...base, remaining: 0 } };
+    if (r.outcome === 'consent_required') return { data: { ...base, consentStatus: r.consentStatus, canOverride: r.canOverride } };
+    return { data: base };
+  },
+});

backend/src/v2/resources/me.ts

@@ -2,8 +2,10 @@ import { z } from 'zod';
 import { defineRoute } from '../route';
 import { ApiError } from '../errors';
 import { pageQuery, paged, single, skipTake, pageOf } from '../paging';
-import { eventRef, id, iso, isoDate } from '../schemas';
-import { prisma, computeRegistrationTotalDue } from '../legacy';
+import { id, iso, isoDate } from '../schemas';
+import { prisma } from '../legacy';
+import { registrationSummary, SUMMARY_INCLUDE, toSummary } from './registrations';
+import { updateProfile } from '../../services/auth';
 
 const me = z.object({
   id,
@@ -12,9 +14,17 @@ const me = z.object({
   phone: z.string().nullable(),
   role: z.enum(['admin', 'supervisor', 'staff', 'user']),
   twoFactorEnabled: z.boolean(),
+  notificationPreference: z.enum(['email', 'whatsapp', 'both']),
+  homeCampusId: id.nullable(),
   createdAt: isoDate,
 });
 
+type MeRow = { id: string; name: string; email: string; phoneNumber: string | null; role: 'admin' | 'supervisor' | 'staff' | 'user'; twoFactorEnabled: boolean | null; notificationPreference: 'email' | 'whatsapp' | 'both'; homeCampusId: string | null; createdAt: Date };
+const toMe = (u: MeRow): z.input<typeof me> => ({
+  id: u.id, name: u.name, email: u.email, phone: u.phoneNumber ?? null, role: u.role, twoFactorEnabled: !!u.twoFactorEnabled,
+  notificationPreference: u.notificationPreference, homeCampusId: u.homeCampusId ?? null, createdAt: iso(u.createdAt),
+});
+
 export const getMe = defineRoute({
   method: 'get',
   path: '/me',
@@ -25,33 +35,37 @@ export const getMe = defineRoute({
   async handler({ user }) {
     const u = await prisma.user.findUnique({
       where: { id: user!.id },
-      select: { id: true, name: true, email: true, phoneNumber: true, role: true, twoFactorEnabled: true, createdAt: true },
+      select: { id: true, name: true, email: true, phoneNumber: true, role: true, twoFactorEnabled: true, notificationPreference: true, homeCampusId: true, createdAt: true },
     });
     if (!u) throw new ApiError('UNAUTHENTICATED', 'User not found');
-    return { data: { id: u.id, name: u.name, email: u.email, phone: u.phoneNumber ?? null, role: u.role, twoFactorEnabled: !!u.twoFactorEnabled, createdAt: iso(u.createdAt) } };
+    return { data: toMe(u) };
   },
 });
 
-const STATUSES = ['pending', 'confirmed', 'partial_paid', 'paid', 'cancelled'] as const;
-
-const myRegistration = z.object({
-  id,
-  status: z.enum(STATUSES),
-  createdAt: isoDate,
-  event: eventRef,
-  items: z.array(z.object({
-    ticket: z.string(),
-    variant: z.string().nullable(),
-    quantity: z.number().int(),
-    unitPrice: z.number(),
-  })),
-  totalDue: z.number().describe('In rand, after discounts'),
-  amountPaid: z.number().describe('In rand (refunds subtracted)'),
-  balance: z.number().describe('totalDue − amountPaid; 0 or less = nothing owing'),
+export const updateMe = defineRoute({
+  method: 'patch',
+  path: '/me',
+  tag: 'Me',
+  summary: 'Change my details',
+  description: 'Only what is sent changes. A new `password` needs `currentPassword`; it sends a security notice and stops other devices skipping the 2FA code. The answer has a fresh `token` (the old one keeps working).',
+  access: 'user',
+  body: z.object({
+    name: z.string().trim().min(1).max(200).optional(),
+    email: z.email().max(200).optional(),
+    phone: z.string().trim().max(40).nullable().optional().describe('null or empty removes it'),
+    notificationPreference: z.enum(['email', 'whatsapp', 'both']).optional(),
+    homeCampusId: id.nullable().optional().describe('While campuses are on'),
+    password: z.string().min(8).max(200).optional(),
+    currentPassword: z.string().max(200).optional(),
+  }),
+  response: single(me).extend({ token: z.string() }),
+  async handler({ body, user, req }) {
+    const { getClientIp } = require('../../utils/requestUtils') as { getClientIp(req: unknown): string };
+    const { user: u, token } = await updateProfile(user!.id, { ...body, phoneNumber: body.phone }, { ip: getClientIp(req), userAgent: req.headers['user-agent'] });
+    return { data: toMe(u), token };
+  },
 });
 
-const r2 = (n: number) => Math.round(n * 100) / 100;
-
 export const listMyRegistrations = defineRoute({
   method: 'get',
   path: '/me/registrations',
@@ -62,38 +76,16 @@ export const listMyRegistrations = defineRoute({
   query: pageQuery.extend({
     past: z.enum(['true', 'false']).default('false').transform(v => v === 'true').describe('Include past and cancelled registrations'),
   }),
-  response: paged(myRegistration),
+  response: paged(registrationSummary),
   async handler({ query, user }) {
     const now = new Date();
     const where = query.past
       ? { userId: user!.id }
       : { userId: user!.id, status: { not: 'cancelled' as const }, event: { endDate: { gte: now } } };
     const [rows, total] = await Promise.all([
-      prisma.registration.findMany({
-        where,
-        include: {
-          event: { select: { id: true, title: true, startDate: true, endDate: true } },
-          registrationOptions: { include: { eventOption: { include: { earlyBirdTiers: true } }, variant: { select: { name: true, price: true } }, tranches: true } },
-          payments: { select: { amount: true, createdAt: true } },
-        },
-        orderBy: [{ createdAt: 'desc' }, { id: 'desc' }],
-        ...skipTake(query),
-      }),
+      prisma.registration.findMany({ where, include: SUMMARY_INCLUDE, orderBy: [{ createdAt: 'desc' }, { id: 'desc' }], ...skipTake(query) }),
       prisma.registration.count({ where }),
     ]);
-    return pageOf(rows.map(r => {
-      const totalDue = r2(computeRegistrationTotalDue(r, now));
-      const amountPaid = r2(r.payments.reduce((s, p) => s + p.amount, 0));
-      return {
-        id: r.id,
-        status: r.status,
-        createdAt: iso(r.createdAt),
-        event: { id: r.event.id, title: r.event.title, startDate: iso(r.event.startDate), endDate: iso(r.event.endDate) },
-        items: r.registrationOptions.map(o => ({ ticket: o.eventOption?.name ?? '', variant: o.variant?.name ?? null, quantity: o.quantity, unitPrice: o.priceSnapshot ?? o.eventOption?.price ?? 0 })),
-        totalDue,
-        amountPaid,
-        balance: r2(totalDue - amountPaid),
-      };
-    }), total, query);
+    return pageOf(rows.map(r => toSummary(r, now)), total, query);
   },
 });

backend/src/v2/resources/registrations.ts

@@ -0,0 +1,187 @@
+import { z } from 'zod';
+import { defineRoute, type ApiUser } from '../route';
+import { ApiError, notFound } from '../errors';
+import { single } from '../paging';
+import { eventRef, id, idParams, iso, isoDate } from '../schemas';
+import { prisma, computeRegistrationTotalDue } from '../legacy';
+import { createRegistration, cancelRegistration } from '../../services/registrations';
+import { startRegistrationCheckout } from '../../services/payments';
+
+const STATUSES = ['pending', 'confirmed', 'partial_paid', 'paid', 'cancelled'] as const;
+
+/** A registration as v2 shows it to its owner. Also used by GET /me/registrations. */
+export const registrationSummary = z.object({
+  id,
+  status: z.enum(STATUSES),
+  createdAt: isoDate,
+  event: eventRef,
+  items: z.array(z.object({
+    ticket: z.string(),
+    variant: z.string().nullable(),
+    quantity: z.number().int(),
+    unitPrice: z.number(),
+  })),
+  totalDue: z.number().describe('In rand, after discounts'),
+  amountPaid: z.number().describe('In rand (refunds subtracted)'),
+  balance: z.number().describe('totalDue − amountPaid; 0 or less = nothing owing'),
+});
+
+const r2 = (n: number) => Math.round(n * 100) / 100;
+
+export const SUMMARY_INCLUDE = {
+  event: { select: { id: true, title: true, startDate: true, endDate: true } },
+  registrationOptions: { include: { eventOption: { include: { earlyBirdTiers: true } }, variant: { select: { name: true, price: true } }, tranches: true } },
+  payments: { select: { amount: true, createdAt: true } },
+} as const;
+
+type SummaryRow = {
+  id: string; status: (typeof STATUSES)[number]; createdAt: Date;
+  event: { id: string; title: string; startDate: Date; endDate: Date };
+  registrationOptions: { quantity: number; priceSnapshot: number | null; eventOption: { name: string; price: number } | null; variant: { name: string } | null }[];
+  payments: { amount: number }[];
+};
+
+export function toSummary(r: SummaryRow, now = new Date()): z.input<typeof registrationSummary> {
+  const totalDue = r2(computeRegistrationTotalDue(r, now));
+  const amountPaid = r2(r.payments.reduce((s, p) => s + p.amount, 0));
+  return {
+    id: r.id,
+    status: r.status,
+    createdAt: iso(r.createdAt),
+    event: { id: r.event.id, title: r.event.title, startDate: iso(r.event.startDate), endDate: iso(r.event.endDate) },
+    items: r.registrationOptions.map(o => ({ ticket: o.eventOption?.name ?? '', variant: o.variant?.name ?? null, quantity: o.quantity, unitPrice: o.priceSnapshot ?? o.eventOption?.price ?? 0 })),
+    totalDue,
+    amountPaid,
+    balance: r2(totalDue - amountPaid),
+  };
+}
+
+/** The owner's registration (admins may see anyone's); others get NOT_FOUND, not a hint it exists. */
+async function ownRegistration(registrationId: string, user: ApiUser) {
+  const r = await prisma.registration.findUnique({ where: { id: registrationId }, include: SUMMARY_INCLUDE });
+  if (!r || (r.userId !== user.id && user.role !== 'admin')) throw notFound('That registration');
+  return r;
+}
+
+const attendee = z.object({
+  eventOptionId: id,
+  variantId: id.nullish(),
+  name: z.string().trim().min(1).max(200),
+  email: z.string().trim().max(200).nullish(),
+  phone: z.string().trim().max(40).nullish(),
+  dateOfBirth: z.string().max(40).nullish().describe('YYYY-MM-DD (youth events)'),
+  gender: z.string().max(20).nullish(),
+  parentName: z.string().max(200).nullish(),
+  parentEmail: z.string().max(200).nullish(),
+  parentPhone: z.string().max(40).nullish(),
+});
+
+export const register = defineRoute({
+  method: 'post',
+  path: '/registrations',
+  tag: 'Registrations',
+  summary: 'Register for an event',
+  description: [
+    'Signed in, or as a guest for a free event that allows it (`guest` then required), or with a waitlist link (`waitlistToken`).',
+    'Registering again for the same event adds to the existing registration. When nothing is owed it is marked paid and tickets are issued; otherwise pay with `POST /registrations/{id}/checkout`.',
+    'A coupon that was valid when checked but used up a moment later is reported in `couponError`; the registration is still made.',
+  ].join('\n\n'),
+  access: 'optional',
+  status: 201,
+  body: z.object({
+    eventId: id,
+    options: z.array(z.object({
+      eventOptionId: id,
+      quantity: z.number().int().min(1).max(1000),
+      variantId: id.nullish(),
+      sessionIds: z.array(id).max(200).optional().describe('"Pick sessions" tickets: the sessions chosen'),
+    })).min(1).max(50),
+    guest: z.object({ name: z.string().trim().min(1).max(200), email: z.email().max(200), phone: z.string().trim().max(40).optional() }).optional(),
+    couponCode: z.string().trim().max(60).optional(),
+    attendees: z.array(attendee).max(500).optional().describe('Names for the places (events that collect them)'),
+    ticketDelivery: z.enum(['payer', 'each']).optional().describe('With attendees: tickets to the payer, or to each attendee'),
+    waitlistToken: z.string().max(200).optional(),
+    analyticsSessionId: z.string().max(100).optional(),
+  }),
+  response: single(registrationSummary.extend({
+    isNew: z.boolean().describe('false = added to an existing registration'),
+    couponError: z.string().nullable(),
+  })),
+  async handler({ body, user }) {
+    const { registration, isNew, couponError } = await createRegistration({
+      eventId: body.eventId,
+      options: body.options.map(o => ({ ...o, variantId: o.variantId ?? null })),
+      guestName: body.guest?.name,
+      guestEmail: body.guest?.email,
+      guestPhone: body.guest?.phone,
+      couponCode: body.couponCode,
+      attendees: body.attendees,
+      ticketDelivery: body.ticketDelivery,
+      waitlistToken: body.waitlistToken,
+      analyticsSessionId: body.analyticsSessionId,
+    }, user ? { id: user.id, role: user.role, email: user.email } : null);
+    const fresh = await prisma.registration.findUniqueOrThrow({ where: { id: registration.id }, include: SUMMARY_INCLUDE });
+    return { data: { ...toSummary(fresh), isNew, couponError } };
+  },
+});
+
+export const getRegistration = defineRoute({
+  method: 'get',
+  path: '/registrations/:id',
+  tag: 'Registrations',
+  summary: 'One of my registrations',
+  access: 'user',
+  params: idParams,
+  response: single(registrationSummary),
+  async handler({ params, user }) {
+    return { data: toSummary(await ownRegistration(params.id, user!)) };
+  },
+});
+
+export const cancel = defineRoute({
+  method: 'post',
+  path: '/registrations/:id/cancel',
+  tag: 'Registrations',
+  summary: 'Cancel my registration',
+  description: 'Not after the event has ended, and not once anything has been paid (the church can do that). Its places go to the waitlist.',
+  access: 'user',
+  params: idParams,
+  response: single(registrationSummary),
+  async handler({ params, user, req }) {
+    await ownRegistration(params.id, user!);
+    const { getClientIp } = require('../../utils/requestUtils') as { getClientIp(req: unknown): string };
+    await cancelRegistration(params.id, user!, getClientIp(req));
+    return { data: toSummary(await ownRegistration(params.id, user!)) };
+  },
+});
+
+export const checkout = defineRoute({
+  method: 'post',
+  path: '/registrations/:id/checkout',
+  tag: 'Registrations',
+  summary: 'Pay what I owe online',
+  description: [
+    'Starts a payment with the church\'s provider (Yoco or PayFast) and returns where to send the person (`redirectUrl`).',
+    'If an early-bird price ran out since the registration was made, nothing is started: `priceUpdated` is true with the new amount owing — show it, then call again.',
+  ].join('\n\n'),
+  access: 'user',
+  params: idParams,
+  body: z.object({
+    donationAmount: z.number().min(0).max(100000).optional().describe('An optional donation added on top, in rand'),
+    provider: z.string().max(40).optional().describe('yoco or payfast (default: the first one switched on)'),
+    successUrl: z.url().max(2000).optional(),
+    cancelUrl: z.url().max(2000).optional(),
+    failureUrl: z.url().max(2000).optional(),
+  }),
+  response: single(z.discriminatedUnion('priceUpdated', [
+    z.object({ priceUpdated: z.literal(true), newBalance: z.number(), message: z.string() }),
+    z.object({ priceUpdated: z.literal(false), checkoutId: z.string(), redirectUrl: z.string(), provider: z.string(), amount: z.number().describe('Charged now, in rand (with any donation)') }),
+  ])),
+  async handler({ params, body, user }) {
+    await ownRegistration(params.id, user!);
+    const result = await startRegistrationCheckout(params.id, user!, body);
+    if (result.priceUpdated) return { data: { priceUpdated: true as const, newBalance: result.newTotal, message: result.message } };
+    if (!result.redirectUrl) throw new ApiError('INTERNAL', 'The payment provider did not return a payment page.');
+    return { data: { priceUpdated: false as const, checkoutId: result.checkoutId, redirectUrl: result.redirectUrl, provider: result.provider, amount: result.amount } };
+  },
+});

backend/src/v2/route.ts

@@ -48,6 +48,8 @@ export type RouteDef<P extends Schema | undefined, Q extends Schema | undefined,
   response: R;
   /** HTTP status on success (default 200). */
   status?: number;
+  /** Runs after the access check, e.g. a rate limiter. */
+  middleware?: RequestHandler[];
   handler: (ctx: Ctx<Infer<P>, Infer<Q>, Infer<B>>) => Promise<z.input<R>> | z.input<R>;
 };
 
@@ -100,6 +102,6 @@ export function mount(router: Router, list: AnyRoute[] = routes): void {
         next(err);
       }
     };
-    router[def.method](def.path, ...ACCESS[def.access], run);
+    router[def.method](def.path, ...ACCESS[def.access], ...(def.middleware ?? []), run);
   }
 }

backend/tests/v2.test.ts

@@ -7,7 +7,7 @@ import request from 'supertest';
 const mockDb = {
   event: { findMany: jest.fn(), count: jest.fn(), findFirst: jest.fn() },
   user: { findUnique: jest.fn() },
-  registration: { findMany: jest.fn(), count: jest.fn() },
+  registration: { findMany: jest.fn(), count: jest.fn(), findUnique: jest.fn(), findUniqueOrThrow: jest.fn() },
 };
 jest.mock('../src/config/db', () => mockDb);
 jest.mock('../src/utils/campuses', () => ({
@@ -24,11 +24,32 @@ jest.mock('../src/middleware/authMiddleware', () => {
     protect: (req: { user?: unknown }, res: { status(n: number): void }, next: (e?: Error) => void) => (signedIn ? ((req.user = signedIn), next()) : deny(401, 'Not authorized, no token')(req, res, next as (e: Error) => void)),
     optionalAuth: (req: { user?: unknown }, _res: unknown, next: () => void) => { if (signedIn) req.user = signedIn; next(); },
     admin: (req: { user?: { role: string } }, res: { status(n: number): void }, next: (e?: Error) => void) => (req.user?.role === 'admin' ? next() : deny(403, 'Not authorized as an admin')(req, res, next as (e: Error) => void)),
-    staff: jest.fn(), supervisor: jest.fn(),
+    staff: (req: { user?: { role: string } }, res: { status(n: number): void }, next: (e?: Error) => void) => (['admin', 'supervisor', 'staff'].includes(req.user?.role || '') ? next() : deny(403, 'Not authorized as staff')(req, res, next as (e: Error) => void)),
+    supervisor: jest.fn(),
+    loginLimiter: (_req: unknown, _res: unknown, next: () => void) => next(),
   };
 });
 
+// The services are tested through v1 (e2e); here only how v2 calls them and maps their answers.
+const mockServices = { createRegistration: jest.fn(), cancelRegistration: jest.fn(), startRegistrationCheckout: jest.fn() };
+jest.mock('../src/services/registrations', () => ({ createRegistration: (...a: unknown[]) => mockServices.createRegistration(...a), cancelRegistration: (...a: unknown[]) => mockServices.cancelRegistration(...a) }));
+jest.mock('../src/services/payments', () => ({ startRegistrationCheckout: (...a: unknown[]) => mockServices.startRegistrationCheckout(...a) }));
+const mockAuth = { signUp: jest.fn(), logIn: jest.fn(), verifyLoginCode: jest.fn(), updateProfile: jest.fn() };
+jest.mock('../src/services/auth', () => ({
+  signUp: (...a: unknown[]) => mockAuth.signUp(...a), logIn: (...a: unknown[]) => mockAuth.logIn(...a),
+  verifyLoginCode: (...a: unknown[]) => mockAuth.verifyLoginCode(...a), updateProfile: (...a: unknown[]) => mockAuth.updateProfile(...a),
+}));
+const mockCheckin = { previewScan: jest.fn(), scanTicket: jest.fn() };
+jest.mock('../src/services/checkin', () => ({ previewScan: (...a: unknown[]) => mockCheckin.previewScan(...a), scanTicket: (...a: unknown[]) => mockCheckin.scanTicket(...a) }));
+const mockScope = { scope: null as object | null, campusId: 'north' as string | null };
+jest.mock('../src/utils/campusScope', () => ({
+  scopeFor: async () => mockScope.scope,
+  eventOf: async () => ({ campusId: mockScope.campusId, campusName: 'North' }),
+  canView: (scope: { campusIds: string[] }, campusId: string | null) => !campusId || scope.campusIds.includes(campusId),
+}));
+
 import { v2Router } from '../src/v2';
+import { ServiceError } from '../src/services/errors';
 import { routes } from '../src/v2/route';
 import { buildOpenApi } from '../src/v2/openapi';
 
@@ -150,3 +171,168 @@ describe('the API description', () => {
     expect(res.body.error.code).toBe('NOT_FOUND');
   });
 });
+
+describe('registrations', () => {
+  const row = (over: Record<string, unknown> = {}) => ({
+    id: 'r1', userId: 'u1', status: 'pending', createdAt: new Date('2026-10-01T10:00:00Z'), discountTotal: 0,
+    event: { id: 'e1', title: 'Youth Camp', startDate: new Date('2026-12-04T16:00:00Z'), endDate: new Date('2026-12-06T12:00:00Z') },
+    registrationOptions: [{ quantity: 1, priceSnapshot: 600, eventOption: { name: 'Camper', price: 600, earlyBirdTiers: [] }, variant: null, tranches: [] }],
+    payments: [], ...over,
+  });
+
+  test('registering passes a guest through and answers 201 with what is owing', async () => {
+    mockServices.createRegistration.mockResolvedValue({ registration: { id: 'r1' }, isNew: true, couponError: null });
+    mockDb.registration.findUniqueOrThrow.mockResolvedValue(row());
+    const res = await request(app).post('/api/v2/registrations').send({
+      eventId: 'e1', options: [{ eventOptionId: 'o1', quantity: 1 }], guest: { name: 'Thandi', email: 'thandi@example.com' },
+    });
+    expect(res.status).toBe(201);
+    expect(res.body.data).toMatchObject({ id: 'r1', isNew: true, couponError: null, totalDue: 600, balance: 600 });
+    expect(mockServices.createRegistration).toHaveBeenCalledWith(expect.objectContaining({ eventId: 'e1', guestName: 'Thandi', guestEmail: 'thandi@example.com' }), null);
+  });
+
+  test('a bad body never reaches the service', async () => {
+    const res = await request(app).post('/api/v2/registrations').send({ eventId: 'e1', options: [{ eventOptionId: 'o1', quantity: 0 }], guest: { name: 'T', email: 'not-an-email' } });
+    expect(res.status).toBe(400);
+    expect(Object.keys(res.body.error.fields).sort()).toEqual(['guest.email', 'options.0.quantity']);
+    expect(mockServices.createRegistration).not.toHaveBeenCalled();
+  });
+
+  test("the service's errors keep their meaning", async () => {
+    mockServices.createRegistration.mockRejectedValueOnce(new ServiceError(401, 'Authentication required for this event'));
+    const res = await request(app).post('/api/v2/registrations').send({ eventId: 'e1', options: [{ eventOptionId: 'o1', quantity: 1 }] });
+    expect(res.status).toBe(401);
+    expect(res.body.error).toEqual({ code: 'UNAUTHENTICATED', message: 'Authentication required for this event' });
+
+    mockServices.createRegistration.mockRejectedValueOnce(new ServiceError(400, '"Camper" is sold out or does not have enough stock (0 remaining).'));
+    const sold = await request(app).post('/api/v2/registrations').send({ eventId: 'e1', options: [{ eventOptionId: 'o1', quantity: 1 }] });
+    expect(sold.body.error.code).toBe('VALIDATION_FAILED');
+  });
+
+  test("someone else's registration is NOT_FOUND, and can't be cancelled or paid", async () => {
+    signedIn = { id: 'u2', role: 'user' };
+    mockDb.registration.findUnique.mockResolvedValue(row());
+    for (const [method, path] of [['get', '/api/v2/registrations/r1'], ['post', '/api/v2/registrations/r1/cancel'], ['post', '/api/v2/registrations/r1/checkout']] as const) {
+      const res = await request(app)[method](path).send({});
+      expect([path, res.status]).toEqual([path, 404]);
+    }
+    expect(mockServices.cancelRegistration).not.toHaveBeenCalled();
+    expect(mockServices.startRegistrationCheckout).not.toHaveBeenCalled();
+  });
+
+  test('cancelling my registration', async () => {
+    signedIn = { id: 'u1', role: 'user' };
+    mockDb.registration.findUnique.mockResolvedValueOnce(row()).mockResolvedValueOnce(row({ status: 'cancelled' }));
+    mockServices.cancelRegistration.mockResolvedValue({});
+    const res = await request(app).post('/api/v2/registrations/r1/cancel');
+    expect(res.status).toBe(200);
+    expect(res.body.data.status).toBe('cancelled');
+  });
+
+  test('checkout: the payment page, or the new balance when an early-bird price ran out', async () => {
+    signedIn = { id: 'u1', role: 'user' };
+    mockDb.registration.findUnique.mockResolvedValue(row());
+    mockServices.startRegistrationCheckout.mockResolvedValueOnce({ checkoutId: 'c1', redirectUrl: 'https://pay.example/c1', provider: 'yoco', amount: 650, registration: {} });
+    const pay = await request(app).post('/api/v2/registrations/r1/checkout').send({ donationAmount: 50 });
+    expect(pay.body.data).toEqual({ priceUpdated: false, checkoutId: 'c1', redirectUrl: 'https://pay.example/c1', provider: 'yoco', amount: 650 });
+    expect(mockServices.startRegistrationCheckout).toHaveBeenCalledWith('r1', signedIn, { donationAmount: 50 });
+
+    mockServices.startRegistrationCheckout.mockResolvedValueOnce({ priceUpdated: true, newTotal: 700, message: 'Prices changed' });
+    const changed = await request(app).post('/api/v2/registrations/r1/checkout').send({});
+    expect(changed.body.data).toEqual({ priceUpdated: true, newBalance: 700, message: 'Prices changed' });
+  });
+});
+
+describe('the frontend types', () => {
+  test('frontend/src/lib/api-v2/openapi.json is up to date (run `npm run api:types` in the repo root)', () => {
+    // eslint-disable-next-line @typescript-eslint/no-require-imports
+    const { OPENAPI_FILE, currentDocument } = require('../scripts/openapi');
+    // eslint-disable-next-line @typescript-eslint/no-require-imports
+    const saved = require('fs').readFileSync(OPENAPI_FILE, 'utf8').replace(/\r\n/g, '\n');
+    expect(saved).toBe(currentDocument());
+  });
+});
+
+describe('accounts', () => {
+  const sess = { id: 'u1', name: 'Thandi', email: 't@x.co', role: 'user', token: 'jwt', newsPromptPending: true, noticePromptPending: false };
+
+  test('log in: a token, or a code to finish with', async () => {
+    mockAuth.logIn.mockResolvedValueOnce({ status: 'signed_in', session: sess });
+    const ok = await request(app).post('/api/v2/auth/login').send({ identifier: 't@x.co', password: 'secret' });
+    expect(ok.body.data).toEqual({ status: 'signed_in', token: 'jwt', user: { id: 'u1', name: 'Thandi', email: 't@x.co', role: 'user' }, newsPromptPending: true, noticePromptPending: false });
+
+    mockAuth.logIn.mockResolvedValueOnce({ status: 'code_required', challenge: { challengeId: 'c1', method: 'email', destination: 't***@x.co' }, enrolling: true });
+    const code = await request(app).post('/api/v2/auth/login').send({ identifier: 't@x.co', password: 'secret' });
+    expect(code.body.data).toEqual({ status: 'code_required', challengeId: 'c1', method: 'email', destination: 't***@x.co', enrolling: true });
+    // The token never comes with a code challenge.
+    expect(code.body.data.token).toBeUndefined();
+  });
+
+  test('a wrong password is UNAUTHENTICATED and a locked account RATE_LIMITED', async () => {
+    mockAuth.logIn.mockRejectedValueOnce(new ServiceError(401, 'Invalid email or password', undefined, { v1Status: 400 }));
+    expect((await request(app).post('/api/v2/auth/login').send({ identifier: 'a', password: 'b' })).body.error.code).toBe('UNAUTHENTICATED');
+    mockAuth.logIn.mockRejectedValueOnce(new ServiceError(429, 'Too many attempts. Try again in 5 minute(s).'));
+    const locked = await request(app).post('/api/v2/auth/login').send({ identifier: 'a', password: 'b' });
+    expect([locked.status, locked.body.error.code]).toEqual([429, 'RATE_LIMITED']);
+  });
+
+  test('sign up needs the terms accepted and a password of 8+', async () => {
+    const bad = await request(app).post('/api/v2/auth/signup').send({ name: 'T', email: 't@x.co', password: 'short' });
+    expect(Object.keys(bad.body.error.fields).sort()).toEqual(['acceptTerms', 'password']);
+    mockAuth.signUp.mockResolvedValue({ id: 'u9', name: 'T', email: 't@x.co', role: 'user', token: 'jwt9' });
+    const ok = await request(app).post('/api/v2/auth/signup').send({ name: 'T', email: 't@x.co', password: 'long-enough', acceptTerms: true, newsOptIn: true });
+    expect(ok.status).toBe(201);
+    expect(ok.body.data).toMatchObject({ status: 'signed_in', token: 'jwt9' });
+    expect(mockAuth.signUp).toHaveBeenCalledWith(expect.objectContaining({ newsOptIn: true }), expect.any(Object));
+  });
+
+  test('PATCH /me changes only what is sent and hands back a fresh token', async () => {
+    signedIn = { id: 'u1', role: 'user' };
+    mockAuth.updateProfile.mockResolvedValue({ user: { id: 'u1', name: 'New', email: 't@x.co', phoneNumber: null, role: 'user', twoFactorEnabled: false, notificationPreference: 'email', homeCampusId: null, createdAt: new Date('2026-01-01T00:00:00Z'), tokenVersion: 0 }, token: 'jwt2' });
+    const res = await request(app).patch('/api/v2/me').send({ name: 'New' });
+    expect(res.body).toMatchObject({ data: { name: 'New', phone: null }, token: 'jwt2' });
+    expect(res.body.data.tokenVersion).toBeUndefined();
+    expect(mockAuth.updateProfile).toHaveBeenCalledWith('u1', { name: 'New', phoneNumber: undefined }, expect.any(Object));
+  });
+});
+
+describe('check-in', () => {
+  const ticket = { id: 't1', quantity: 2, isUsed: false, eventId: 'e1', event: { title: 'Youth Camp' }, registrationOption: { eventOption: { id: 'o1', name: 'Camper', isMainTicket: true } }, usages: [] };
+  afterEach(() => { mockScope.scope = null; });
+
+  test('staff only', async () => {
+    signedIn = { id: 'u1', role: 'user' };
+    expect((await request(app).post('/api/v2/checkin/QR1').send({})).body.error.code).toBe('FORBIDDEN');
+  });
+
+  test('every normal result is a 200 with an outcome', async () => {
+    signedIn = { id: 's1', role: 'staff' };
+    mockCheckin.scanTicket.mockResolvedValueOnce({ outcome: 'checked_in', message: 'Ticket scanned successfully (1 of 2 redeemed, 1 remaining)', session: null, ticketUsage: {}, ticket, qtyRedeemed: 1, totalRedeemed: 1, remaining: 1 });
+    const ok = await request(app).post('/api/v2/checkin/QR1').send({ people: 1, eventId: 'e1' });
+    expect(ok.body.data).toEqual({ outcome: 'checked_in', message: expect.any(String), ticket: { id: 't1', eventId: 'e1', eventTitle: 'Youth Camp', ticketName: 'Camper', quantity: 2 }, checkedIn: 1, remaining: 1, session: null, consentStatus: null, canOverride: false });
+    expect(mockCheckin.scanTicket).toHaveBeenCalledWith('QR1', signedIn, expect.objectContaining({ qty: 1, eventId: 'e1' }), expect.anything());
+
+    mockCheckin.scanTicket.mockResolvedValueOnce({ outcome: 'consent_required', message: 'Parental consent is missing', consentStatus: 'missing', canOverride: false, ticket });
+    const consent = await request(app).post('/api/v2/checkin/QR1').send({});
+    expect(consent.status).toBe(200);
+    expect(consent.body.data).toMatchObject({ outcome: 'consent_required', checkedIn: 0, consentStatus: 'missing' });
+
+    mockCheckin.scanTicket.mockResolvedValueOnce({ outcome: 'transferred', message: 'Given to Sipho' });
+    expect((await request(app).post('/api/v2/checkin/QR1').send({})).body.data).toMatchObject({ outcome: 'transferred', ticket: null });
+  });
+
+  test("campus-scoped staff can't check in another campus's ticket", async () => {
+    signedIn = { id: 's1', role: 'staff' };
+    mockScope.scope = { campusIds: ['south'] };
+    const res = await request(app).post('/api/v2/checkin/QR1').send({});
+    expect(res.body.error).toEqual({ code: 'FORBIDDEN', message: 'This ticket is for an event at North.' });
+    expect(mockCheckin.scanTicket).not.toHaveBeenCalled();
+  });
+
+  test('the preview names the holder and what is left', async () => {
+    signedIn = { id: 's1', role: 'staff' };
+    mockCheckin.previewScan.mockResolvedValue({ outcome: 'found', ticket: { ...ticket, consentStatus: 'not_required', remaining: 2, session: null, sessionError: null, registrationOption: { id: 'ro1', eventOption: { id: 'o1', name: 'Camper' }, variant: null }, event: { id: 'e1', title: 'Youth Camp' }, user: { id: 'u1', name: 'Thandi' }, attendee: { name: 'Lulu' } } });
+    const res = await request(app).get('/api/v2/checkin/QR1');
+    expect(res.body.data.ticket).toMatchObject({ holder: 'Lulu', remaining: 2, consentStatus: 'not_required' });
+  });
+});

docs/HANDOVER.md

@@ -1,6 +1,6 @@
 # Handover — where things stand and how to carry on
 
-Last updated: 2026-10-29, after **1.51.0** (and Hub 1.5.0). The plan itself is in
+Last updated: 2026-10-29, after **1.51.2** (and Hub 1.5.0). The plan itself is in
 [ROADMAP-v2.md](./ROADMAP-v2.md) (decisions table at the end); the previous round of
 features is in [FEATURES-ROUND-1.md](./FEATURES-ROUND-1.md).
 
@@ -14,6 +14,8 @@ encrypted settings unreadable or break existing installs.
 
 | Version | What |
 |---------|------|
+| 1.51.2 | **v2 accounts and check-in**: signup, login (+ code step), `PATCH /me`; check-in look-up and scan with `outcome`s. `src/services/auth.ts` (from userController) and `src/services/checkin.ts` (from ticketController); login/signup/profile pages on v2 |
+| 1.51.1 | **v2 registrations and payments**: register, get, cancel, checkout; create/cancel moved to `src/services/registrations.ts`, online checkout to `src/services/payments.ts` (v1 uses them too); typed frontend calls (`apiV2`, `npm run api:types`); register page, Pay now and My Events cancel on v2 |
 | 1.51.0 | **TypeScript backend + `/api/v2` foundations** (§14): tsconfig (`allowJs`), build to `dist/`, launcher `src/index.js` → `src/app.js`; v2 route declarations with zod → validation, response stripping and OpenAPI 3.1 at `/docs/v2`; first endpoints events, event, me, my registrations. Tests `tests/v2.test.ts`, e2e `e2e/api-v2.spec.ts` |
 | 1.50.2 | Searchable **event picker** (`components/shared/EventPicker.tsx`) on staff/supervisor pages and the kiosk; searchable reports events list; **How webhooks work** guide on Site settings → Webhooks (examples from `EVENT_TYPES[].example`). e2e `e2e/event-picker.spec.ts` |
 | 1.50.1 | Long lists: audit-log search/role filter/all actions and inclusive To date, data-request search and paging, webhook-delivery status filter and Load older, supervisor Payments loads only what it needs (`unpaid`, `userId`, `from`, `donations` filters). `components/shared/Pager.tsx`; e2e `e2e/long-lists.spec.ts` |
@@ -62,9 +64,9 @@ encrypted settings unreadable or break existing installs.
 Hub 1.1.0 is deployed with update requests rolled out, and `scripts/install.sh` has been tried on
 a test server (both done 2026-10-28).
 
-1. **1.51.1 — v2 write endpoints** (register, pay, check-in, users; split `registrationController`
-   and `eventController` into TS services as they move; typed frontend calls from the schemas), then
-   **1.51.2 — the rest of v2, Express 5, v1 deprecation headers**, then **2.0.0 — AI helpers** (§15).
+1. **1.51.3 — the rest of v2** (the scanner page onto `/checkin`, staff and admin screens),
+   **Express 5, v1 deprecation headers and v2-shaped global middleware** (rate limits, read-only
+   modes, campus refusals), then **2.0.0 — AI helpers** (§15).
    Languages (Afrikaans, §10) are removed from scope (2026-10-28).
 2. AI rules decided 2026-10-29 (see §15 in the roadmap): the AI buttons show only when the
    licence's monthly cap is above R0, and are disabled (not hidden) once it's reached. The Hub
@@ -471,6 +473,18 @@ a test server (both done 2026-10-28).
   The response is parsed by its schema: unknown fields are dropped, and a mismatch is a 500 plus a
   log line (tests catch it). Staff/supervisor routes must declare `campusScope` (start-up fails
   otherwise).
+- **Services** (`src/services/*.ts`, 1.51.1): business logic both API versions call. Throw
+  `ServiceError(status, message)` (`fail()`); v1 controllers keep their old answers (mostly 400
+  for any error), v2 maps the status to its codes. Helper errors without a status count as 400,
+  like v1. JS helpers are required with a typed signature at the top of each service.
+- **Outcomes, not errors** (1.51.2): where an endpoint has several normal answers (scanning:
+  already used, consent missing…), v2 returns 200 with an `outcome` and keeps errors for real
+  failures. The service returns a union (`ScanResult`); `v1ScanResponse()` maps it to v1's statuses.
+- **v1 statuses:** `ServiceError(status, message, code, { v1Status })` when v2 means something
+  different (wrong password: 401 in v2, 400 in v1); v1 controllers use `v1StatusOf(error, fallback)`.
+- **Frontend v2 calls:** `apiV2("post", "/registrations/{id}/cancel", { params: { id }, authToken })`
+  (`frontend/src/lib/apiV2.ts`). After adding or changing a v2 route run `npm run api:types` in the
+  repo root and commit `frontend/src/lib/api-v2/` (`tests/v2.test.ts` fails while it's stale).
 - Not yet v2-shaped: the global middleware in front of every route (rate limit, impersonation
   read-only guard, licence read-only) still answers `{ message }`. Do that with 1.51.2.
 

docs/ROADMAP-v2.md

@@ -39,7 +39,8 @@ report** and 1.47.3 **season passes** shipped — §6 is done. 1.48.0 **outbound
 shipped; 1.49.1 **bulk actions** and 1.49.2 **saved filters** shipped — §9 is done. Languages
 (Afrikaans) are removed from scope (2026-10-28), so everything after moves up by one. 1.50.0 **accessibility
 pass** shipped. 1.50.1 **pagination and search on long lists** and 1.50.2 **event picker and webhook guide** shipped. 1.51.0 **TypeScript backend and `/api/v2`
-foundations** shipped. **Next: 1.51.1 v2 write endpoints, then 1.51.2.**
+foundations**, 1.51.1 **v2 registrations and payments** and 1.51.2 **v2 accounts and check-in** shipped.
+**Next: 1.51.3 — the rest of v2, Express 5.**
 
 **Repositories:**
 
@@ -1007,7 +1008,7 @@ income justify the hardware:
 | 8 | 1.45.0 ✅ – 1.46.0 ✅ | Kids check-in, Volunteer rosters | Depend on sessions and campuses |
 | 9 | 1.47.0 ✅ – 1.47.3 ✅, 1.48.0 ✅ | Event series & cloning (1.47.0 clone, 1.47.1 series, 1.47.2 year-on-year reports, 1.47.3 season pass), Outbound webhooks (Wallet passes removed from scope) | Smaller, independent wins |
 | 10 | 1.49.0 ✅ – 1.49.2 ✅, 1.50.0 ✅, 1.50.1 ✅, 1.50.2 ✅ | Admin dashboard/Ctrl+K/bulk actions/saved filters, Accessibility pass, pagination and search on long lists, event picker and webhook guide (Afrikaans removed from scope) | Polish before the big release |
-| 11 | 1.51.0 ✅, 1.51.1, 1.51.2 | TypeScript backend + OpenAPI + `/api/v2` alongside v1: 1.51.0 foundations (build, launcher, route declarations, errors, paging, OpenAPI at `/docs/v2`, first read endpoints); 1.51.1 write endpoints and services, typed frontend calls; 1.51.2 the rest, Express 5, v1 deprecation headers | The breaking-change groundwork |
+| 11 | 1.51.0 ✅, 1.51.1 ✅, 1.51.2 ✅, 1.51.3 | TypeScript backend + OpenAPI + `/api/v2` alongside v1: 1.51.0 foundations (build, launcher, route declarations, errors, paging, OpenAPI at `/docs/v2`, first read endpoints); 1.51.1 registrations and payments as TS services, typed frontend calls; 1.51.2 check-in and accounts; 1.51.3 the rest, Express 5, v1 deprecation headers | The breaking-change groundwork |
 | 12 | **2.0.0** | **AI helpers** (§15 — headline feature: draft an event, summarise reports and feedback, draft messages, improve text; through the Hub with a rand cap per licence), v1 API removed, migration guide, marketing site/docs for selling | The release. AI needs the Hub (phase 6) for the key, metering and caps |
 
 Each phase should add matching help content (`frontend/src/content/help/`),

e2e/api-v2.spec.ts

@@ -35,6 +35,55 @@ test.describe("API v2", () => {
     expect(regs.data.length).toBe(Math.min(25, regs.meta.total));
   });
 
+  test("register for a free event, then cancel it", async ({ request }) => {
+    const headers = { Authorization: `Bearer ${seed().users.staff.token}` };
+    const event = (await (await request.get(`${API}/api/v2/events/${seed().events.free}`)).json()).data;
+    const made = await request.post(`${API}/api/v2/registrations`, { headers, data: { eventId: event.id, options: [{ eventOptionId: event.ticketOptions[0].id, quantity: 1 }] } });
+    expect(made.status()).toBe(201);
+    const reg = (await made.json()).data;
+    expect(reg).toMatchObject({ status: "paid", balance: 0, event: { id: event.id } });
+
+    const someoneElse = await request.post(`${API}/api/v2/registrations/${reg.id}/cancel`, { headers: { Authorization: `Bearer ${seed().users.user.token}` } });
+    expect((await someoneElse.json()).error.code).toBe("NOT_FOUND");
+
+    const cancelled = await request.post(`${API}/api/v2/registrations/${reg.id}/cancel`, { headers });
+    expect((await cancelled.json()).data.status).toBe("cancelled");
+    const again = await request.post(`${API}/api/v2/registrations/${reg.id}/cancel`, { headers });
+    expect((await again.json()).error).toMatchObject({ code: "VALIDATION_FAILED", message: "Registration is already cancelled" });
+  });
+
+  test("log in, change my details, and check a ticket in", async ({ request }) => {
+    const bad = await request.post(`${API}/api/v2/auth/login`, { data: { identifier: seed().users.user.email, password: "wrong-password" } });
+    expect(bad.status()).toBe(401);
+    expect((await bad.json()).error).toMatchObject({ code: "UNAUTHENTICATED", message: "Invalid email or password" });
+
+    const login = await (await request.post(`${API}/api/v2/auth/login`, { data: { identifier: seed().users.user.email, password: "E2e-password-123" } })).json();
+    expect(login.data).toMatchObject({ status: "signed_in", user: { id: seed().users.user.id, role: "user" } });
+    const headers = { Authorization: `Bearer ${login.data.token}` };
+
+    const changed = await (await request.patch(`${API}/api/v2/me`, { headers, data: { notificationPreference: "email" } })).json();
+    expect(changed.data).toMatchObject({ id: seed().users.user.id, notificationPreference: "email" });
+    expect(changed.token).toEqual(expect.any(String));
+
+    // A free ticket for the user, then check it in twice through v2.
+    const event = (await (await request.get(`${API}/api/v2/events/${seed().events.free}`)).json()).data;
+    await request.post(`${API}/api/v2/registrations`, { headers, data: { eventId: event.id, options: [{ eventOptionId: event.ticketOptions[0].id, quantity: 1 }] } });
+    const tickets = await (await request.get(`${API}/api/tickets/mytickets`, { headers })).json();
+    const qr = tickets.find((t: { eventId: string; qrCode: string }) => t.eventId === event.id).qrCode;
+
+    const staff = { Authorization: `Bearer ${seed().users.staff.token}` };
+    expect((await request.post(`${API}/api/v2/checkin/${qr}`, { headers, data: {} })).status()).toBe(403);
+    const look = await (await request.get(`${API}/api/v2/checkin/${qr}`, { headers: staff })).json();
+    expect(look.data).toMatchObject({ outcome: "found", ticket: { eventId: event.id } });
+    expect(look.data.ticket.remaining).toBeGreaterThan(0);
+
+    const scanned = await (await request.post(`${API}/api/v2/checkin/${qr}`, { headers: staff, data: { eventId: event.id } })).json();
+    expect(scanned.data).toMatchObject({ outcome: "checked_in", remaining: 0 });
+    const again = await (await request.post(`${API}/api/v2/checkin/${qr}`, { headers: staff, data: {} })).json();
+    expect(again.data).toMatchObject({ outcome: "already_used", checkedIn: 0 });
+    expect((await (await request.post(`${API}/api/v2/checkin/NOT-A-CODE`, { headers: staff, data: {} })).json()).error.code).toBe("NOT_FOUND");
+  });
+
   test("an admin can read the OpenAPI reference at /docs/v2", async ({ page, request }) => {
     const headers = { Authorization: `Bearer ${seed().users.user.token}` };
     expect((await request.get(`${API}/api/v2/openapi.json`, { headers })).status()).toBe(403);

frontend/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "hope-events-frontend",
-  "version": "1.51.0",
+  "version": "1.51.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "hope-events-frontend",
-      "version": "1.51.0",
+      "version": "1.51.2",
       "dependencies": {
         "@dnd-kit/core": "^6.3.1",
         "@hookform/resolvers": "^5.2.1",
@@ -54,6 +54,7 @@
         "autoprefixer": "^10.4.21",
         "eslint": "^9",
         "eslint-config-next": "^15.5.24",
+        "openapi-typescript": "^7.13.0",
         "postcss": "^8.5.6",
         "tailwindcss": "3.4",
         "typescript": "^5"
@@ -2770,6 +2771,99 @@
       "integrity": "sha512-JtyZR+mqgBibTo8xea3B6ZRmzZiM/YeVBtUkas6zMuXjAlfIFIW2FgqeM9eLyvEaYX66vr6DJMK+4U6LV0KhNw==",
       "license": "MIT"
     },
+    "node_modules/@redocly/ajv": {
+      "version": "8.11.2",
+      "resolved": "https://registry.npmjs.org/@redocly/ajv/-/ajv-8.11.2.tgz",
+      "integrity": "sha512-io1JpnwtIcvojV7QKDUSIuMN/ikdOUd1ReEnUnMKGfDVridQZ31J0MmIuqwuRjWDZfmvr+Q0MqCcfHM2gTivOg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "fast-deep-equal": "^3.1.1",
+        "json-schema-traverse": "^1.0.0",
+        "require-from-string": "^2.0.2",
+        "uri-js-replace": "^1.0.1"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/epoberezkin"
+      }
+    },
+    "node_modules/@redocly/config": {
+      "version": "0.22.0",
+      "resolved": "https://registry.npmjs.org/@redocly/config/-/config-0.22.0.tgz",
+      "integrity": "sha512-gAy93Ddo01Z3bHuVdPWfCwzgfaYgMdaZPcfL7JZ7hWJoK9V0lXDbigTWkhiPFAaLWzbOJ+kbUQG1+XwIm0KRGQ==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@redocly/openapi-core": {
+      "version": "1.34.22",
+      "resolved": "https://registry.npmjs.org/@redocly/openapi-core/-/openapi-core-1.34.22.tgz",
+      "integrity": "sha512-dEyx4uHh6Pc6ZkdU9Xe8rA4h12Odq6QKU/fqseBn07xwVwskhHiF3KHhqmw5BR+jAiFTvKTmwCafFql/k1pSzA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@redocly/ajv": "8.11.2",
+        "@redocly/config": "0.22.0",
+        "colorette": "1.4.0",
+        "https-proxy-agent": "7.0.6",
+        "js-levenshtein": "1.1.6",
+        "js-yaml": "4.3.2",
+        "minimatch": "5.1.9",
+        "pluralize": "8.0.0",
+        "yaml-ast-parser": "0.0.43"
+      },
+      "engines": {
+        "node": ">=18.17.0",
+        "npm": ">=9.5.0"
+      }
+    },
+    "node_modules/@redocly/openapi-core/node_modules/agent-base": {
+      "version": "7.1.4",
+      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-7.1.4.tgz",
+      "integrity": "sha512-MnA+YT8fwfJPgBx3m60MNqakm30XOkyIoH1y6huTQvC0PwZG7ki8NacLBcrPbNoo8vEZy7Jpuk7+jMO+CUovTQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 14"
+      }
+    },
+    "node_modules/@redocly/openapi-core/node_modules/brace-expansion": {
+      "version": "2.1.7",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.1.7.tgz",
+      "integrity": "sha512-uZbew1NqdmPDTMJ8ah1y+b+9QEJrfkXFk3RcTQw3X0jW/xRUvFKsg1CfQdSYGdTbXZWExtU3J3ccxtnfw1Fi0g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^1.0.0"
+      }
+    },
+    "node_modules/@redocly/openapi-core/node_modules/https-proxy-agent": {
+      "version": "7.0.6",
+      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-7.0.6.tgz",
+      "integrity": "sha512-vK9P5/iUfdl95AI+JVyUuIcVtd4ofvtrOr3HNtM2yxC9bnMbEdp3x01OhQNnjb8IJYi38VlTE3mBXwcfvywuSw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "agent-base": "^7.1.2",
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 14"
+      }
+    },
+    "node_modules/@redocly/openapi-core/node_modules/minimatch": {
+      "version": "5.1.9",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-5.1.9.tgz",
+      "integrity": "sha512-7o1wEA2RyMP7Iu7GNba9vc0RWWGACJOCZBJX2GJWip0ikV+wcOsgVuY9uE8CPiyQhkGFSlhuSkZPavN7u1c2Fw==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "brace-expansion": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/@rollup/plugin-commonjs": {
       "version": "28.0.1",
       "resolved": "https://registry.npmjs.org/@rollup/plugin-commonjs/-/plugin-commonjs-28.0.1.tgz",
@@ -4650,6 +4744,16 @@
         "ajv": "^8.8.2"
       }
     },
+    "node_modules/ansi-colors": {
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-4.1.3.tgz",
+      "integrity": "sha512-/6w/C21Pm1A7aZitlI5Ni/2J6FFQN8i1Cvz3kHABAAbw93v/NlvKdVOqz7CCWz/3iv/JplRSEEZ83XION15ovw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/ansi-regex": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
@@ -5208,6 +5312,13 @@
         "url": "https://github.com/chalk/chalk?sponsor=1"
       }
     },
+    "node_modules/change-case": {
+      "version": "5.4.4",
+      "resolved": "https://registry.npmjs.org/change-case/-/change-case-5.4.4.tgz",
+      "integrity": "sha512-HRQyTk2/YPEkt9TnUPbOpr64Uw3KOicFWPVBb+xiHvd6eBx/qPr9xqfBFDT8P2vWsvvz4jbEkfDe71W3VyNu2w==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/chokidar": {
       "version": "3.6.0",
       "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.6.0.tgz",
@@ -5316,6 +5427,13 @@
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       "license": "MIT"
     },
+    "node_modules/colorette": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.4.0.tgz",
+      "integrity": "sha512-Y2oEozpomLn7Q3HFP7dpww7AtMJplbM9lGZP6RDfHqmbeRjiwRg4n6VM6j4KLmRke85uWEI7JqF17f3pqdRA0g==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/commander": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/commander/-/commander-4.1.1.tgz",
@@ -6903,6 +7021,19 @@
         "node": ">=0.8.19"
       }
     },
+    "node_modules/index-to-position": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/index-to-position/-/index-to-position-1.2.0.tgz",
+      "integrity": "sha512-Yg7+ztRkqslMAS2iFaU+Oa4KTSidr63OsFGlOrJoW981kIYO3CGCS3wA95P1mUi/IVSJkn0D479KTJpVpvFNuw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/internal-slot": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/internal-slot/-/internal-slot-1.1.0.tgz",
@@ -7446,6 +7577,16 @@
         "jiti": "bin/jiti.js"
       }
     },
+    "node_modules/js-levenshtein": {
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/js-levenshtein/-/js-levenshtein-1.1.6.tgz",
+      "integrity": "sha512-X2BB11YZtrRqY4EnQcLX5Rh373zbK4alC1FW7D7MBhL2gtcC17cTnr6DmfHZeS0s2rTHjUTMMHfG7gO8SSdw+g==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/js-tokens": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
@@ -7498,8 +7639,7 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz",
       "integrity": "sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==",
-      "license": "MIT",
-      "peer": true
+      "license": "MIT"
     },
     "node_modules/json-stable-stringify-without-jsonify": {
       "version": "1.0.1",
@@ -8134,6 +8274,50 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/openapi-typescript": {
+      "version": "7.13.0",
+      "resolved": "https://registry.npmjs.org/openapi-typescript/-/openapi-typescript-7.13.0.tgz",
+      "integrity": "sha512-EFP392gcqXS7ntPvbhBzbF8TyBA+baIYEm791Hy5YkjDYKTnk/Tn5OQeKm5BIZvJihpp8Zzr4hzx0Irde1LNGQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@redocly/openapi-core": "^1.34.6",
+        "ansi-colors": "^4.1.3",
+        "change-case": "^5.4.4",
+        "parse-json": "^8.3.0",
+        "supports-color": "^10.2.2",
+        "yargs-parser": "^21.1.1"
+      },
+      "bin": {
+        "openapi-typescript": "bin/cli.js"
+      },
+      "peerDependencies": {
+        "typescript": "^5.x"
+      }
+    },
+    "node_modules/openapi-typescript/node_modules/supports-color": {
+      "version": "10.2.2",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-10.2.2.tgz",
+      "integrity": "sha512-SS+jx45GF1QjgEXQx4NJZV9ImqmO2NPz5FNsIHrsDjh2YsHnawpan7SNQ1o8NuhrbHZy9AZhIoCUiCeaW/C80g==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/supports-color?sponsor=1"
+      }
+    },
+    "node_modules/openapi-typescript/node_modules/yargs-parser": {
+      "version": "21.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-21.1.1.tgz",
+      "integrity": "sha512-tVpsJW7DdjecAiFpbIB1e3qxIQsE6NoPc5/eTdrbbIC4h0LVsWhnoa3g+m2HclBIujHzsxZ4VJVA+GUuc2/LBw==",
+      "dev": true,
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/optionator": {
       "version": "0.9.4",
       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.9.4.tgz",
@@ -8223,6 +8407,37 @@
         "node": ">=6"
       }
     },
+    "node_modules/parse-json": {
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-8.3.0.tgz",
+      "integrity": "sha512-ybiGyvspI+fAoRQbIPRddCcSTV9/LsJbf0e/S85VLowVGzRmokfneg2kwVW/KU5rOXrPSbF1qAKPMgNTqqROQQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/code-frame": "^7.26.2",
+        "index-to-position": "^1.1.0",
+        "type-fest": "^4.39.1"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/parse-json/node_modules/type-fest": {
+      "version": "4.41.0",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-4.41.0.tgz",
+      "integrity": "sha512-TeTSQ6H5YHvpqVwBRcnLDCBnDOHWYu7IvGbHT6N8AOymcr9PJGjc1GTtiWZTYg0NCgYwvnYWEkVChQAr9bjfwA==",
+      "dev": true,
+      "license": "(MIT OR CC0-1.0)",
+      "engines": {
+        "node": ">=16"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/path-exists": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
@@ -8300,6 +8515,16 @@
         "node": ">= 6"
       }
     },
+    "node_modules/pluralize": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/pluralize/-/pluralize-8.0.0.tgz",
+      "integrity": "sha512-Nc3IT5yHzflTfbjgqWcCPpo7DaKy4FnpB0l/zCAW0Tc7jxAiuqSxHasntB3D7887LSrA93kDJ9IXovxJYxyLCA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=4"
+      }
+    },
     "node_modules/pngjs": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/pngjs/-/pngjs-5.0.0.tgz",
@@ -8813,7 +9038,6 @@
       "resolved": "https://registry.npmjs.org/require-from-string/-/require-from-string-2.0.2.tgz",
       "integrity": "sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==",
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -10051,6 +10275,13 @@
         "punycode": "^2.1.0"
       }
     },
+    "node_modules/uri-js-replace": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/uri-js-replace/-/uri-js-replace-1.0.2.tgz",
+      "integrity": "sha512-VeBBt/nMxedczht3KDL2yBBMJqIxpCQLMZp3UJ1otcWwUHdQW4IiyHpJivExzSK+FdxTowRfGL4FmwDqH9+S8Q==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/use-callback-ref": {
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/use-callback-ref/-/use-callback-ref-1.3.3.tgz",
@@ -10328,6 +10559,13 @@
       "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==",
       "license": "ISC"
     },
+    "node_modules/yaml-ast-parser": {
+      "version": "0.0.43",
+      "resolved": "https://registry.npmjs.org/yaml-ast-parser/-/yaml-ast-parser-0.0.43.tgz",
+      "integrity": "sha512-2PTINUwsRqSd+s8XxKaJWQlUuEMHJQyEuh2edBbW8KNJz0SJPwUSD2zRWqezFEdN7IzAgeuYHFUCF7o8zRdZ0A==",
+      "dev": true,
+      "license": "Apache-2.0"
+    },
     "node_modules/yargs": {
       "version": "15.4.1",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-15.4.1.tgz",

frontend/package.json

@@ -1,12 +1,13 @@
 {
   "name": "hope-events-frontend",
-  "version": "1.51.0",
+  "version": "1.51.2",
   "private": true,
   "scripts": {
     "dev": "next dev --turbopack",
     "build": "next build",
     "start": "next start",
-    "lint": "next lint"
+    "lint": "next lint",
+    "api:types": "openapi-typescript src/lib/api-v2/openapi.json -o src/lib/api-v2/schema.d.ts"
   },
   "dependencies": {
     "@dnd-kit/core": "^6.3.1",
@@ -55,6 +56,7 @@
     "autoprefixer": "^10.4.21",
     "eslint": "^9",
     "eslint-config-next": "^15.5.24",
+    "openapi-typescript": "^7.13.0",
     "postcss": "^8.5.6",
     "tailwindcss": "3.4",
     "typescript": "^5"

frontend/src/app/dashboard/user/page.tsx

@@ -2,6 +2,7 @@
 import React, { useEffect, useMemo, useState } from "react";
 import { useAuth } from "@/hooks/useAuth";
 import { apiFetch, createFullPaymentCheckout } from "@/lib/api";
+import { apiV2 } from "@/lib/apiV2";
 import { useOnlinePayments } from "@/lib/onlinePayments";
 import { useRouter } from "next/navigation";
 import { formatDate } from "@/lib/date";
@@ -454,10 +455,7 @@ export default function UserDashboardPage() {
     if (!token || !activeRegId) return;
     setCancelLoading(true);
     try {
-      await apiFetch(`/api/registrations/${encodeURIComponent(activeRegId)}`, {
-        method: 'DELETE',
-        authToken: token,
-      });
+      await apiV2("post", "/registrations/{id}/cancel", { params: { id: activeRegId }, authToken: token });
       const myRegs = await apiFetch<Registration[]>(`/api/registrations/myregistrations?showPast=${showPast ? '1' : '0'}`, { authToken: token });
       setRegistrations(myRegs);
       setActiveRegId(null);

frontend/src/app/dashboard/user/profile/page.tsx

@@ -12,6 +12,7 @@ import { User, Lock, ShieldAlert, ShieldCheck, ShieldOff, Trash2, Clock, LogIn,
 import { errorMessage } from "@/lib/utils";
 import { BackLink } from "@/components/shared/BackLink";
 import { useCampuses } from "@/hooks/useCampuses";
+import { apiV2 } from "@/lib/apiV2";
 
 type ActivityEvent = { id: string; type: "login" | "password_changed" | "password_reset" | "two_factor_enabled" | "two_factor_disabled"; device: string | null; createdAt: string };
 
@@ -61,19 +62,18 @@ export default function UserProfilePage() {
     setSavingProfile(true);
     setProfileMsg(null);
     try {
-      const res = await apiFetch<{ token?: string }>("/api/users/profile", {
-        method: "PUT",
+      const res = await apiV2("patch", "/me", {
         authToken: token,
         body: {
           name,
           email,
-          phoneNumber: phone || null,
+          phone: phone || null,
           notificationPreference: hasValidPhone ? notifPref : "email",
           ...(campusInfo.enabled ? { homeCampusId: homeCampusId || null } : {}),
         },
       });
-      // Backend returns a refreshed token — save it so the session stays valid
-      if (res?.token) updateToken(res.token);
+      // A refreshed token comes back — save it so the session stays valid
+      updateToken(res.token);
       setProfileMsg({ type: "ok", text: "Profile updated." });
     } catch (e) {
       setProfileMsg({ type: "err", text: errorMessage(e) || "Failed to update profile." });
@@ -103,12 +103,8 @@ export default function UserProfilePage() {
     setSavingPw(true);
     setPwMsg(null);
     try {
-      const res = await apiFetch<{ token?: string }>("/api/users/profile", {
-        method: "PUT",
-        authToken: token,
-        body: { currentPassword, password: newPassword },
-      });
-      if (res?.token) updateToken(res.token);
+      const res = await apiV2("patch", "/me", { authToken: token, body: { currentPassword, password: newPassword } });
+      updateToken(res.token);
       setCurrentPassword("");
       setNewPassword("");
       setConfirmPassword("");

frontend/src/app/dashboard/user/reset-password/page.tsx

@@ -1,12 +1,12 @@
 "use client";
 import React, { useMemo, useState } from "react";
 import { useAuth } from "@/hooks/useAuth";
-import { apiFetch } from "@/lib/api";
 import { useDismissingState } from "@/hooks/useDismissingState";
 import { useRouter } from "next/navigation";
 import { KeyRound } from "lucide-react";
 import { errorMessage } from "@/lib/utils";
 import { BackLink } from "@/components/shared/BackLink";
+import { apiV2 } from "@/lib/apiV2";
 
 export default function ResetPasswordPage() {
   const { token } = useAuth();
@@ -31,7 +31,7 @@ export default function ResetPasswordPage() {
     if (!canSubmit) return;
     try {
       setLoading(true);
-      await apiFetch("/api/users/profile", { method: "PUT", authToken: token, body: { password, currentPassword: current } });
+      await apiV2("patch", "/me", { authToken: token, body: { password, currentPassword: current } });
       setStatus("Your password has been updated successfully.");
       setCurrent("");
       setPassword("");

frontend/src/app/register/[eventId]/RegisterForm.tsx

@@ -3,6 +3,7 @@
 import React, { useEffect, useMemo, useState } from "react";
 import { useAuth } from "@/hooks/useAuth";
 import { apiFetch } from "@/lib/api";
+import { apiV2 } from "@/lib/apiV2";
 import { useOnlinePayments } from "@/lib/onlinePayments";
 import { CouponCodeField, AppliedCoupon } from "@/components/shared/CouponCodeField";
 import { BundleBuilder, BundleOffers, BundleSavings, useBundleQuote } from "@/components/shared/BundleDeals";
@@ -552,6 +553,15 @@ export default function RegisterForm({ event: baseEvent }: { event: RegisterEven
       setError(`The minimum donation is R${MIN_DONATION}. Choose None to skip it.`);
       return;
     }
+    // Registers through API v2; returns the new registration (balance = what's owed now).
+    const register = async (extra: { couponCode?: string; waitlistToken?: string; guest?: { name: string; email: string; phone?: string } }, authToken?: string | null) => {
+      const named = namedAttendees();
+      const { data } = await apiV2("post", "/registrations", {
+        body: { eventId, options: items, analyticsSessionId: analyticsSessionId(), ...(named.length > 0 ? { attendees: named, ticketDelivery: delivery } : {}), ...extra },
+        authToken,
+      });
+      return data;
+    };
     const donationParam = donation > 0 ? `&donation=${encodeURIComponent(donation.toFixed(2))}` : "";
 
     // Claim link without logging in: the link identifies the person.
@@ -559,11 +569,8 @@ export default function RegisterForm({ event: baseEvent }: { event: RegisterEven
       try {
         setError(null);
         setCreatingRegistration(true);
-        const res = await apiFetch<{ id: string; totalDueComputed?: number }>("/api/registrations", {
-          method: "POST",
-          body: { eventId, options: items, waitlistToken, analyticsSessionId: analyticsSessionId(), ...(namedAttendees().length > 0 ? { attendees: namedAttendees(), ticketDelivery: delivery } : {}) },
-        });
-        if (res?.id) window.location.href = `/registration/success?registrationId=${encodeURIComponent(res.id)}&totalDue=${encodeURIComponent((res.totalDueComputed ?? payable).toFixed(2))}`;
+        const res = await register({ waitlistToken });
+        window.location.href = `/registration/success?registrationId=${encodeURIComponent(res.id)}&totalDue=${encodeURIComponent(Math.max(0, res.balance).toFixed(2))}`;
       } catch (e) {
         setError(errorMessage(e) || "Registration failed");
       } finally {
@@ -581,21 +588,10 @@ export default function RegisterForm({ event: baseEvent }: { event: RegisterEven
       try {
         setError(null);
         setCreatingRegistration(true);
-        const res = await apiFetch<{ id: string; totalDueComputed?: number; couponError?: string }>("/api/registrations", {
-          method: "POST",
-          body: {
-            eventId,
-            options: items,
-            ...(coupon ? { couponCode: coupon.code } : {}),
-            analyticsSessionId: analyticsSessionId(),
-            ...(namedAttendees().length > 0 ? { attendees: namedAttendees(), ticketDelivery: delivery } : {}),
-            ...(waitlistToken ? { waitlistToken } : {}),
-          },
-          authToken: token,
-        });
-        if (res?.id) {
+        const res = await register({ ...(coupon ? { couponCode: coupon.code } : {}), ...(waitlistToken ? { waitlistToken } : {}) }, token);
+        {
           const hasForm = !!(event?.form && Array.isArray(event.form.fields) && event.form.fields.length > 0);
-          const due = res.totalDueComputed ?? payable;
+          const due = Math.max(0, res.balance);
           const next = hasForm
             ? `/forms?registrationId=${encodeURIComponent(res.id)}${donationParam}`
             : `/registration/success?registrationId=${encodeURIComponent(res.id)}&totalDue=${encodeURIComponent((due || 0).toFixed(2))}${donationParam}`;
@@ -628,15 +624,8 @@ export default function RegisterForm({ event: baseEvent }: { event: RegisterEven
     try {
       setError(null);
       setCreatingRegistration(true);
-      const res = await apiFetch<{ id: string }>("/api/registrations", {
-        method: "POST",
-        body: {
-          eventId, options: items, guestName: guestName.trim(), guestEmail: guestEmail.trim(), guestPhone: guestPhone.trim() || undefined,
-          analyticsSessionId: analyticsSessionId(),
-          ...(namedAttendees().length > 0 ? { attendees: namedAttendees(), ticketDelivery: delivery } : {}),
-        },
-      });
-      if (res?.id) {
+      const res = await register({ guest: { name: guestName.trim(), email: guestEmail.trim(), ...(guestPhone.trim() ? { phone: guestPhone.trim() } : {}) } });
+      {
         const hasForm = !!(event?.form && Array.isArray(event.form.fields) && event.form.fields.length > 0);
         if (hasForm) {
           window.location.href = `/forms?registrationId=${encodeURIComponent(res.id)}`;

frontend/src/contexts/AuthContext.tsx

@@ -2,7 +2,15 @@
 
 import React, { createContext, useCallback, useContext, useEffect, useMemo, useState } from "react";
 import { apiFetch, ApiError } from "@/lib/api";
-import { AuthResponse, AuthUser, TwoFactorChallenge, clearToken, getDeviceToken, getToken, isTwoFactorChallenge, saveDeviceToken, saveToken } from "@/lib/auth";
+import { AuthResponse, AuthUser, TwoFactorChallenge, clearToken, getDeviceToken, getToken, saveDeviceToken, saveToken } from "@/lib/auth";
+import { apiV2, type V2Result } from "@/lib/apiV2";
+
+// A v2 "signed_in" answer as the session the app keeps (the user's fields plus the token).
+type V2Session = Extract<V2Result<"/auth/login", "post">["data"], { status: "signed_in" }>;
+const toAuthResponse = (s: V2Session): AuthResponse => ({
+  ...s.user, token: s.token, newsPromptPending: s.newsPromptPending, noticePromptPending: s.noticePromptPending,
+  ...(s.deviceToken ? { deviceToken: s.deviceToken } : {}),
+});
 
 export type AuthContextValue = {
   user: AuthUser | null;
@@ -91,22 +99,21 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
   }, []);
 
   const login = useCallback(async (email: string, password: string) => {
-    const res = await apiFetch<AuthResponse | TwoFactorChallenge>("/api/users/login", {
-      method: "POST",
-      body: { email, password, deviceToken: getDeviceToken() || undefined },
+    const { data } = await apiV2("post", "/auth/login", {
+      body: { identifier: email, password, deviceToken: getDeviceToken() || undefined },
     });
     // 2FA accounts get a challenge back instead of a token — nothing is saved
     // until verifyTwoFactor exchanges the emailed/WhatsApp code for one.
-    if (isTwoFactorChallenge(res)) return res;
-    return startSession(res as AuthResponse);
+    if (data.status === "code_required") {
+      const challenge: TwoFactorChallenge = { twoFactorRequired: true, challengeId: data.challengeId, method: data.method, destination: data.destination || "", ...(data.enrolling ? { enrolling: true } : {}) };
+      return challenge;
+    }
+    return startSession(toAuthResponse(data));
   }, [startSession]);
 
   const verifyTwoFactor = useCallback(async (challengeId: string, code: string, rememberDevice: boolean) => {
-    const res = await apiFetch<AuthResponse>("/api/users/login/2fa", {
-      method: "POST",
-      body: { challengeId, code, rememberDevice },
-    });
-    return startSession(res);
+    const { data } = await apiV2("post", "/auth/login/code", { body: { challengeId, code, rememberDevice } });
+    return startSession(toAuthResponse(data));
   }, [startSession]);
 
   const resendTwoFactor = useCallback((challengeId: string) => {
@@ -117,11 +124,16 @@ export function AuthProvider({ children }: { children: React.ReactNode }) {
   }, []);
 
   const register = useCallback(async (data: { name: string; email: string; password: string; phoneNumber?: string; notificationPreference?: "email" | "whatsapp" | "both"; newsOptIn?: boolean }) => {
-    const res = await apiFetch<AuthResponse>("/api/users", {
-      method: "POST",
-      body: data,
+    // The sign-up form only submits once "I agree to the Terms of Use and Privacy Policy" is ticked.
+    const { data: made } = await apiV2("post", "/auth/signup", {
+      body: {
+        name: data.name, email: data.email, password: data.password, acceptTerms: true,
+        ...(data.phoneNumber ? { phone: data.phoneNumber } : {}),
+        ...(data.notificationPreference ? { notificationPreference: data.notificationPreference } : {}),
+        ...(data.newsOptIn !== undefined ? { newsOptIn: data.newsOptIn } : {}),
+      },
     });
-    const { token, ...registeredUser } = res;
+    const { token, ...registeredUser } = toAuthResponse(made);
     saveToken(token);
     setToken(token);
     setUser(registeredUser);

frontend/src/lib/api.ts

@@ -74,8 +74,9 @@ export function resolveToApiOrigin(urlOrPath: string | null | undefined): string
   return API_BASE ? `${API_BASE}${raw}` : raw;
 }
 
-// The parsed JSON body of a failed request — the backend always sends `message`, and
-// some routes add a machine-readable `code` or extra detail fields.
+// The parsed JSON body of a failed request — v1 sends `message` (some routes add a
+// machine-readable `code` or extra detail fields); for v2 it is the `error` object
+// (`code`, `message`, and `fields` on validation errors).
 export type ApiErrorData = { message?: string; code?: string; [key: string]: unknown };
 
 export class ApiError extends Error {
@@ -122,6 +123,11 @@ export async function apiFetch<T = unknown>(path: string, options: ApiOptions =
       const json = JSON.parse(text);
       if (json?.message && typeof json.message === "string") message = json.message;
       data = json;
+      // /api/v2 errors: { error: { code, message, fields? } }
+      if (json?.error && typeof json.error === "object" && typeof json.error.message === "string") {
+        message = json.error.message;
+        data = { ...json.error };
+      }
     } catch { /* not JSON — use raw text */ }
     // An admin/supervisor session from before 2FA was required for their role:
     // end it and send them to log in, where they enrol.
@@ -198,21 +204,23 @@ export function fetchAllPayments(token: string, params: Record<string, string> =
   return fetchAllPages<Payment>("/api/payments", token, params);
 }
 
-// Creates an online checkout (default payment provider) for a registration's full remaining balance.
-// Omitting `amount` makes the backend charge the full remainder rather than a partial amount —
-// partial-amount checkouts are only ever created from the supervisor payments dashboard.
+// Starts an online payment for everything still owed on one of my registrations (API v2), with
+// an optional donation on top. Partial amounts are only taken from the supervisor payments page.
 export type CheckoutResponse = { redirectUrl?: string; priceUpdated?: boolean; newTotal?: number; message?: string };
 
-export function createFullPaymentCheckout(token: string, registrationId: string, donationAmount?: number): Promise<CheckoutResponse> {
-  return apiFetch<CheckoutResponse>("/api/payments/checkout", {
-    method: "POST",
+export async function createFullPaymentCheckout(token: string, registrationId: string, donationAmount?: number): Promise<CheckoutResponse> {
+  const { apiV2 } = await import("@/lib/apiV2");
+  const { data } = await apiV2("post", "/registrations/{id}/checkout", {
+    params: { id: registrationId },
     authToken: token,
     body: {
-      registrationId,
       ...(donationAmount && donationAmount > 0 ? { donationAmount } : {}),
       successUrl: window.location.origin + "/payment/success",
       cancelUrl: window.location.origin + "/payment/cancel",
       failureUrl: window.location.origin + "/payment/failure",
     },
   });
+  // The price changed since registering: nothing was started — show the new amount owing.
+  if (data.priceUpdated) return { priceUpdated: true, newTotal: data.newBalance, message: data.message };
+  return { redirectUrl: data.redirectUrl };
 }

frontend/src/lib/apiV2.ts

@@ -0,0 +1,44 @@
+import { apiFetch } from "@/lib/api";
+import type { paths } from "@/lib/api-v2/schema";
+
+/**
+ * Typed calls to /api/v2. The types come from the backend's OpenAPI document
+ * (`npm run api:types` in the repo root regenerates src/lib/api-v2/), so a path, its parameters,
+ * its body and its answer are all checked by TypeScript:
+ *
+ *   const { data, meta } = await apiV2("get", "/events", { query: { q: "camp", limit: 10 } });
+ *   const { data } = await apiV2("post", "/registrations/{id}/cancel", { params: { id }, authToken });
+ *
+ * Errors throw ApiError (from apiFetch) with the v2 `code` and `fields` in `.data`.
+ */
+
+type Method = "get" | "post" | "put" | "patch" | "delete";
+type PathsWith<M extends Method> = { [P in keyof paths]: paths[P][M] extends { responses: unknown } ? P : never }[keyof paths];
+type Op<P extends keyof paths, M extends Method> = NonNullable<paths[P][M]>;
+
+type Json<T> = T extends { content: { "application/json": infer J } } ? J : never;
+type Responses<O> = O extends { responses: infer R } ? R : never;
+/** The 2xx answer's JSON. */
+export type V2Result<P extends keyof paths, M extends Method> = Json<Responses<Op<P, M>>[Extract<keyof Responses<Op<P, M>>, 200 | 201>]>;
+
+type PathParams<O> = O extends { parameters: { path: infer X } } ? (X extends Record<string, unknown> ? X : never) : never;
+type QueryParams<O> = O extends { parameters: { query?: infer X } } ? X : never;
+type Body<O> = O extends { requestBody: { content: { "application/json": infer B } } } ? B : never;
+
+type IfAny<T, Then> = [T] extends [never] ? object : Then;
+export type V2Options<P extends keyof paths, M extends Method> =
+  { authToken?: string | null }
+  & IfAny<PathParams<Op<P, M>>, { params: PathParams<Op<P, M>> }>
+  & IfAny<QueryParams<Op<P, M>>, { query?: QueryParams<Op<P, M>> }>
+  & IfAny<Body<Op<P, M>>, { body: Body<Op<P, M>> }>;
+
+export function apiV2<M extends Method, P extends PathsWith<M>>(method: M, path: P, ...[options]: object extends V2Options<P, M> ? [V2Options<P, M>?] : [V2Options<P, M>]): Promise<V2Result<P, M>> {
+  const opts = (options || {}) as { authToken?: string | null; params?: Record<string, string>; query?: Record<string, unknown>; body?: unknown };
+  let url = String(path).replace(/\{(\w+)\}/g, (_, name: string) => encodeURIComponent(String(opts.params?.[name] ?? "")));
+  const qs = new URLSearchParams();
+  for (const [k, v] of Object.entries(opts.query || {})) {
+    if (v !== undefined && v !== null && v !== "") qs.set(k, String(v));
+  }
+  if (qs.toString()) url += `?${qs.toString()}`;
+  return apiFetch<V2Result<P, M>>(`/api/v2${url}`, { method: method.toUpperCase(), authToken: opts.authToken, body: opts.body });
+}

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "hope-events",
-  "version": "1.51.0",
+  "version": "1.51.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "hope-events",
-      "version": "1.51.0",
+      "version": "1.51.2",
       "license": "ISC",
       "devDependencies": {
         "@axe-core/playwright": "^4.14.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hope-events",
-  "version": "1.51.0",
+  "version": "1.51.2",
   "main": "index.js",
   "scripts": {
     "dev:backend": "cd backend && npm run dev",
@@ -16,7 +16,8 @@
     "demo:small": "npm --prefix backend run set-demo -- --profile=small",
     "demo:events": "npm --prefix backend run set-demo -- --profile=events",
     "demo:ministry": "npm --prefix backend run set-demo -- --profile=ministry",
-    "demo:multicampus": "npm --prefix backend run set-demo -- --profile=multicampus"
+    "demo:multicampus": "npm --prefix backend run set-demo -- --profile=multicampus",
+    "api:types": "npm --prefix backend run openapi && npm --prefix frontend run api:types"
   },
   "keywords": [],
   "author": "",