Bill

import { Bill } from "@persian-tools/persian-tools";

// From bill ID + payment ID (currency defaults to "toman")
const b = new Bill({ billId: 1117753200, paymentId: 1234567890 });

// With explicit currency
const b2 = new Bill({ billId: 1117753200, paymentId: 1234567890, currency: "rial" });

// From a combined barcode
const b3 = new Bill({ barcode: "1117753200000123456789..." });

interface BillParams {
	billId?: number;
	paymentId?: number;
	currency?: "toman" | "rial"; // default "toman"
	barcode?: string;
}

b.getAmount(): number               // amount in chosen currency
b.getBillType(): BillTypes          // service category
b.getBarcode(): string              // billId + "000" + paymentId
b.findByBarcode(barcode?: string): { billId: number; paymentId: number }
b.verificationBillId(): boolean     // check digit on the bill ID
b.verificationBillPayment(): boolean // check digit on the payment ID
b.verificationBill(): boolean       // both must pass
b.getResult(): BillResult           // everything in one object

interface BillResult {
	amount: number;
	type: string; // field name is `type`, NOT `billType`
	barcode: string;
	isValid: boolean;
	isValidBillId: boolean;
	isValidBillPayment: boolean;
}

const r = b.getResult();
r.amount; // number
r.type; // "برق" | "آب" | ... | "unknown"   ← note: `type`, not `billType`
r.isValid; // r.isValidBillId && r.isValidBillPayment

amount = parseInt(paymentId.slice(0, -5)) * (currency === "rial" ? 1000 : 100)

import { Bill, billTypes } from "@persian-tools/persian-tools";
import type { BillTypes, Currency, BillParams, BillResult } from "@persian-tools/persian-tools";