Event-sourced aggregate root handling state transitions from domain events.

Handles POS checkout, product filtering, sale processing, and returns.

Computes a sale line total as quantity times price using bcmath, optionally subtracting the item discount when include_discount is true.

Domain entity representing a customer's basket with basket items; ensures valid ID and non-empty items, and supports replacing all items via Update.

Checks product stock level against threshold returns boolean low-stock flag.

Product aggregate root with Catalog repository interface for managing saleable items. Supports subclassing for custom product types.

Comprehensive Sunmi POS printer SDK wrapper supporting text, barcodes, QR codes, bitmaps, cash drawer, LCD display, label printing, and cutter control.

Abstraction for payment methods in the system.

Order aggregate with OrderLine items, ChargeLine discounts/fees, and event-driven lifecycle (Open->Paid->Completed/Canceled).

Generic fallback driver for unrecognized models using standard ESC/POS commands.

Stock tracking with UniqueInventory (single warehouse) and MultiInventory (multiple warehouses). Automatically updates stock on order completion.

Calculates line-item discount amount from quantity, price, discount value and type (percent or fixed), returning a rounded result.

Main public API: Printer class factory, connection abstractions, and standard print primitives.

Reference implementation of the full ESC/POS command set for Epson printers. Covers text, barcodes, QR codes, cut, cash drawer, and character table mapping.

Represents amounts with unit tracking using BigDecimal for precision and Metric for unit metadata. Enables type-safe quantity arithmetic for POS items.

Rails engine initialization and configuration for POS extension.

Returns all rounding mode constants as translated display labels keyed by their values, using reflection and language helper.

Opens a .conllu file and yields each parsed sentence, intended for training pipelines.

Calculates cart sale totals including discounts, taxes, payments, cash rounding, amount due, item count, and units.

Sale library handling sale processing, registration, and management in CodeIgniter.

Generates PDF barcodes for products/variants using Barby and Prawn. Lifts out cleanly - just requires barby, prawn, and variant objects with name, options_text, price, and sku.

Prints sales receipts in multiple formats (large/thermal) with customizable nota types, adaptable for any retail system.

Parses configured barcode formats to extract quantity, price, and item identifier from scanned barcode input, updating by reference. Enables flexible POS barcode handling.

Retrieves the sales cart from session, initializing it to an empty array if not set. Central accessor for cart state.

Factory method that returns the appropriate barcode encoder instance based on the requested barcode type.

HTML to PDF converter with CSS2.1 support, used for generating receipts and reports in the POS system.

Determines whether an order status is New, used to gate backoffice workflows on newly created orders.

Form request validating purchase cart item addition with product and quantity rules.

Manages sales transactions and order processing in a CodeIgniter e-commerce application.

Eloquent model representing order line items with price, quantity, and belongsTo relationships to Order and Product.

Sales retrieval and filtering controller providing REST API endpoints for POS systems to query sales records by customer, status, and date range.

Processes place order commands and persists resulting events.

Broadcasts NFC tag data to connected clients via WebSocket.

Item management operations including search, kit handling, and stock.

ESC/POS command constants and builder functions for thermal receipt printers. Covers alignment, bold, underline, bitmap printing, line spacing, and character encoding.

Updates an existing store's settings by sending a PUT request with the provided data. It validates inputs and returns the updated store data.

Builds and runs a query to retrieve detailed sale information, including totals, taxes, payments, and customer details for a given sale ID.

Calculates the total cost of all items in the receiving cart by summing each item's total using bcadd.

Cancels a sale within a transaction, optionally restocking inventory if it was completed, and returns transaction status.

Point-of-sale checkout logic: cart, totals, payment handling, and sale completion.

Loads sale details, cart, payments, taxes, totals, customer, and receipt config into a cleaned array for rendering sale documents.

Stores the receiving cart data in the session under 'recv_cart'.

Computes the total cost of all items in the receiving cart using arbitrary-precision addition via bcadd.

Immutable response object parsed from Square Point of Sale callback URLs. Extracts transaction ID, client ID, error, and success status.

Core point-of-sale orchestrator coordinating checkout flow and components.

Manages sale records with completed and suspended states in CodeIgniter application.

Eloquent model for orders, handling payments-related queries and scopes in Laravel app.

Represents a query to retrieve a customer's basket data, returning CustomerBasketDto.

Calculates sales taxes for cart items, handling origin/destination-based rules, included/excluded tax, and line-item tax details while updating taxed flags.

Adds scope to find variants available at a specific stock location with positive count_on_hand.