Phase 2. NetworkPrinterService now builds the ESC/POS bytes (as before) and
dispatches them via a new router: if the receipt/kitchen/station printer is mapped
to a PrintDevice whose agent is online, the bytes are sent to that agent over the
hub and we await its ack; otherwise it falls back to a direct TCP connection (raw
IP), so existing on-prem/reachable printers keep working unchanged. Adds nullable
mapping columns Branch.ReceiptPrintDeviceId / KitchenPrintDeviceId and
KitchenStation.PrintDeviceId (additive migration), plus TestPrintDeviceAsync for
testing an agent printer. The cloud can now reach LAN/USB printers it never could.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Full backend implementation:
- Multi-tenant cafe/restaurant management (menus, orders, tables, staff)
- POS order flow with ZarinPal and Snappfood payment integration
- OTP authentication via Kavenegar SMS
- QR digital menu with public discover/finder endpoints
- Customer loyalty, coupons, CRM
- PostgreSQL via EF Core, Redis for caching/sessions
- Background jobs, webhook handlers
- Full migration history
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
soroush.asadi