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julian bba988c4e8 feat(subscription): QR credentials — operator-choose (QR-only now), auto-generate, multi-month, printed card

Builds out subscription credentials on top of the rename.

- Operator chooses the credential type; only QR is live (RFID shown disabled
  "soon"). Backend/schema keep accepting both — re-enabling RFID is UI-only.
- QR codes are AUTO-GENERATED server-side (SUB-<base32>, crypto-random,
  globally-unique-checked) — the customer/operator never picks the value.
  RF stays operator-entered (the physical card id). Reader output decided =
  TCP/IP full string (Wiegand-numeric fallback noted).
- Multi-month: form takes a `months` count → server sets validTo =
  validFrom + N months (day-clamp); one record/one window; total = N×monthly.
- The QR card is PRINTED so the operator can hand it over: real ESC/POS 2D QR
  (GS ( k) added to the Rongta driver (printSubscriptionCard); auto-print on
  create (best-effort — never fails the create; returns {printed,printError})
  + reprint via POST /api/subscriptions/:id/print and a "Print code" button.

Verified via buildServer+inject incl. a TCP capture of the on-wire QR bytes
(autogen+uniqueness, Jan31+3mo→Apr30, auto-print, GS ( k QR with embedded
code, reprint, no-QR→409). Updated wiki (subscription, rongta-printer). No
migration.

Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V

2026-06-18 14:48:38 +02:00

2.9 KiB

Raw Blame History

type, tags, sources, updated

type

Rongta 80mm thermal printer

The chosen ticket/receipt printer: a Rongta RP-series 80mm network thermal printer (and the many ESC/POS-compatible OEM clones that share its firmware). Driver rongta in packages/devices implements device-adapter-pattern.

Transport & protocol

ESC/POS over a raw TCP socket on port 9100 (the JetDirect/RAW convention). The driver opens the socket, writes the ESC/POS byte stream, waits for flush, closes.
No authentication on the print socket — anyone who can reach port 9100 can print. Like every other field device it must sit on the isolated device VLAN (network-isolation). There is no real HTTP/control boundary on the device (same posture as dingtian-relay).
Health check is a TCP connect probe to 9100. The print socket exposes no status protocol we rely on; the print itself is the real reachability test (failover attempts the print).
Live status comes from the device's own web page http://<host>/prn_stat.htm (port 80), which decodes Cover Open / Cutter Error / Paper End / Paper Near End / Off-Line into Yes/No. We scrape that rather than hand-decode DLE EOT — this clone's DLE EOT reply bytes do not match the canonical ESC/POS bit layout (verified on hardware), so trusting the device's own decode avoids a false-healthy. Implemented as readStatus(); see printer-status-monitoring.

Deployment (this site)

First printer verified reachable at 10.0.10.6:9100 from the host (TCP connect OK, 2026-06-14).
At least two printers, by role — see printer-roles-failover:
- entry-dispenser — outside, at the lane; the driver takes the entry ticket.
- booth-receipt — inside the booth; receipts, AND the backup that prints the entry ticket if the outside dispenser is offline.

Ticket rendering

printTicket(TicketData) builds ESC/POS: ESC @ init, centered/bold/double-size header, lane, ticket id, issued-at, feed + partial cut (GS V B). CP437/ASCII subset. The entry ticket encodes the id as a 1D Code128 barcode (GS k).

printSubscriptionCard(SubscriptionCardData) (added 2026-06-18) renders a 2D QR of the subscription code via ESC/POS GS ( k (model 2, EC level M) — firmware-rendered, no bitmap dependency — plus the code as text + holder/validity. Used for the auto-printed + reprintable subscription card. (Verified: the GS ( k store/print byte sequences + the embedded code appear on the wire against a TCP capture.)

Status

Driver written and compiles; entry-ticket layout is a first pass; live status monitoring is implemented and verified (printer-status-monitoring). The receipt/exit layout and the cash-drawer kick (ESC/POS ESC p) are not yet implemented — they arrive with the exit/payment flow. Replaces the generic "Epson TM / Citizen" booth-printer line in bom.

2.9 KiB Raw Blame History