import { business, finance } from '../index.js';
import type { TCurrency } from './currency.js';
export type TInvoiceStatus = 'draft' | 'invoice' | 'paid' | 'refunded';
export type TInvoiceItem = {
    position: number;
    name: string;
    articleNumber?: string;
    unitType: string;
    unitQuantity: number;
    unitNetPrice: number;
    vatPercentage: number;
};
export type TInvoiceEnvelope<TYPE extends 'creditnote' | 'debitnote', FIELDS> = business.TLetterEnvelope<'invoice', {
    invoiceId: string;
    invoiceType: TYPE;
    status: TInvoiceStatus;
    items: TInvoiceItem[];
    periodOfPerformance?: {
        from: number;
        to: number;
    };
    deliveryDate?: number;
    dueInDays: number;
    reverseCharge: boolean;
    /**
     * buyer reference is an optional field, that helps the buyer to identify the invoice
     */
    buyerReference?: string;
    /**
     * also a kind of reference, esspecially needed for circular xinvoice support.
     */
    electronicAddress?: {
        scheme: string;
        value: string;
    };
    printResult?: {
        pdfBufferString: string;
        totalNet: number;
        totalGross: number;
        vatGroups: {
            percentage: number;
            items: TInvoiceItem[];
        };
    };
    notes: string[];
    paymentOptions?: finance.IPaymentOptionInfo;
    currency: TCurrency;
} & FIELDS>;
export type TCreditNote = TInvoiceEnvelope<'creditnote', {}>;
export type TDebitNote = TInvoiceEnvelope<'debitnote', {}>;
export type TInvoice = TCreditNote | TDebitNote;
export interface IInvoiceItem extends TInvoiceItem {
}