createInvoice (posController.js)

Creates invoices with line items, calculates totals, validates customer credit and walk-in payment requirements, processes payments, and logs inventory movements.

// Source: https://github.com/orion-ai-community/BizzAI | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
// Provided via justclaw.it.com; keep this notice with the code.
import mongoose from "mongoose";
import Invoice from "../models/Invoice.js";
import Item from "../models/Item.js";
import Customer from "../models/Customer.js";
import Transaction from "../models/Transaction.js";
import CashbankTransaction from "../models/CashbankTransaction.js";
import BankAccount from "../models/BankAccount.js";
import Counter from "../models/Counter.js";
import { generateInvoicePDF } from "../utils/invoiceGenerator.js";
import { sendEmail } from "../utils/emailService.js";
import { info, error } from "../utils/logger.js";
import { logStockMovement } from "../

... (truncated -- full source via MCP)