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julian d71ba82999 feat(booth): payment receipt / exit voucher — transparency slip + CP852 fixes

After a completed payment the customer always gets a transparency record:
entry time, payment time, duration parked, amount + tender. One shared
ESC/POS renderer (renderReceipt + ReceiptData in @parking/devices), two
modes: VOUCHER = those figures PLUS the scannable Code128 barcode and an
emphasised walk-back-grace line, so the one slip both proves payment and
self-exits at a distant exit reader (replaced the old barcode-only voucher);
STANDALONE = detail-only, auto-printed at payment when no voucher is issued.
Figures fold from the SIGNED ledger (latest payment event); printed on the
booth printer (failover to dispenser). Best-effort: a printer fault never
blocks the exit that already happened — the modal shows a note and offers
"Reprint receipt".

Server: booth-print.ts printPaymentReceipt() + receiptFigures(); routes
POST /api/voucher (voucher) + new POST /api/receipt (standalone/reprint).
Both ESC/POS drivers gained printReceipt(). Web: BoothPayModal auto-prints
after a non-voucher payment + reprint button; api.ts printReceipt().

CP852 fixes found on a real printout: (1) uppercase Ë was mapped to 0xEB
(that's ű) — correct byte is 0xD3; (2) Intl.NumberFormat injects a NO-BREAK
SPACE (U+00A0/U+202F) that isn't in CP852 and printed as "?" — line() now
normalises it to a plain space ("1000 Lekë"); (3) grace line wrapped
mid-word — split into two short lines.

Full build green; both receipt modes render-verified; routes live.

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

2026-06-18 20:46:38 +02:00

4.4 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).
Two printers configured (as of 2026-06-18), by role — see printer-roles-failover:
- entry-dispenser — 10.0.10.9, outside at the lane; the driver takes the entry ticket. This unit is a Cashino, not a Rongta: it prints the same ESC/POS stream but serves no /prn_stat.htm status page, so it runs on the cashino driver (reachability PING only, no paper/cover status) — see printer-status-monitoring.
- booth-receipt — 10.0.10.10, inside the booth; receipts, AND the backup that prints the entry ticket if the outside dispenser is offline. This unit is a Rongta (rongta driver, full status-page monitoring).

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.)

printReceipt(ReceiptData) (added 2026-06-18) — the payment receipt / exit voucher (booth-exit-flow). Same ESC/POS preamble; figures + amount, optional Code128 + grace.

CP852 codepage — two gotchas found on a real misprint (2026-06-18)

The driver selects CP852 (Latin-2) via ESC t 18 and maps the Albanian letters to their CP852 bytes. A printed voucher surfaced two encoding bugs, both now fixed in printer-escpos.ts:

Uppercase Ë was mapped to 0xEB — wrong. In CP852 0xEB is ű; the correct byte for Ë (U+00CB) is 0xD3. The title BILETË DALJE / FATURË PAGESE printed garbled until fixed. (Lowercase ë = 0x89 was always correct.) Anyone extending the CP852 map must verify bytes against the actual Unicode.org CP852.TXT, not guess.
Intl.NumberFormat injects a NO-BREAK SPACE. Formatting ALL money yields "1000 Lekë" (separator = U+00A0, sometimes U+202F narrow NBSP) — neither is in CP852, so it printed as 1000?Lekë. line() now normalises U+00A0/U+202F → a plain space before encoding. Any Intl-formatted value on a ticket is affected, not just money.

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.

4.4 KiB Raw Blame History