FC Communication — Retail POS System

FC Communication is a mobile phone and accessories retail store in Lahore. We delivered a complete offline-first desktop Point of Sale system built on Electron (vanilla JS) with a JSON flat-file database — tailored to their exact workflow and branded with the FC Communication logo throughout.

The sale screen features a split-panel layout: the left side handles invoice entry with pay type selection (Cash, Credit, Partial, JazzCash, EasyPaisa, Card), customer assignment, bill-level and per-item discounts, extra cargo charges, and a live items grid. The right side is a clickable product panel with category filtering and F5 barcode search — cashiers click a product to add it instantly. The system supports wholesale pricing tiers, hold orders, and on-screen balance calculation. Receipts are printed in thermal (58mm/80mm) or professional A4/A3 invoice format, all with the FC Communication logo embedded.

Purchase management includes a vendor-linked product selector with automatic stock updates. Both sale returns and purchase returns are fully supported with stock reversal and customer/vendor ledger adjustments. The Customers and Vendors modules track outstanding balances with full transaction history in modal ledger views.

The Expenses module tracks daily operational costs with per-user attribution and date filtering. Bank transactions are logged separately. The Reports module covers: Daily Sale (cash/credit/partial breakdown), Purchase Report, Profit & Loss, Stock Levels, Top Products, Expenses (daily and summary), Customer Ledger, Vendor Ledger, Vendor Outstanding Balance, and Sale Returns — all filterable by user, date range, and one-click Today/This Month shortcuts.

The dashboard displays real-time stats: today's cash, credit, partial collections, active customers, total products, and low-stock alerts. Security is enforced at the IPC level via Electron's contextBridge — devtools and right-click are disabled in production. Multi-user support with role-based access (Admin, Cashier) with per-user transaction tracking throughout.