Dewasinghe Jewellery POS

Built on Next.js and Supabase, the system is multi-tenant from the schema up — a businesses table sits at the root, with nearly every table (products, orders, rentals, users) carrying a business_id foreign key and Postgres row-level security scoping every query to the caller's own tenant. Multiple physical stores can operate under one business, each with its own code, address, and tax settings, and every staff account is pinned to a specific store location.

The point of sale itself handles a full retail checkout: a barcode scanner looks products up directly into the cart, sales can be parked and resumed later, and checkout supports cash, card, bank transfer, store credit, or split payments. Completing a sale writes the order, decrements inventory through a dedicated stock-movement record, and awards loyalty points automatically.

Alongside outright sales, a full rental module — reachable from a dedicated checkout flow — tracks an item from issue through to return, capturing deposits taken and refunded and applying late or damage fees when it comes back. Access is enforced server-side across eight distinct roles, from cashiers and rental managers up to store managers and a super admin, each tied to an individual login.