import type { Invoice } from '../schemas/index.js';
export type InvoiceSubjectType = 'Subject1' | 'Subject2' | 'Subject3';
export interface FetchInvoicesOpts {
    from: string;
    to: string;
    nip?: string;
    /**
     * Role of the queried NIP in the invoice. `Subject1` = issuer (sales invoices,
     * where the company sold), `Subject2` = buyer (cost invoices, where the
     * company bought). Defaults to `Subject2` for backwards compatibility.
     */
    subjectType?: InvoiceSubjectType;
    pageSize?: number;
    pageOffset?: number;
    /**
     * When true, also fetch the full FA(2)/FA(3) XML body for each invoice via
     * `GET /invoices/ksef/{ksefNumber}` and put it on `Invoice.rawXml`. Off by
     * default — metadata alone covers grossAmount/NIPs/dates.
     */
    includeXml?: boolean;
}
export interface SendInvoiceInput {
    xml: string;
    nip: string;
}
export interface SendInvoiceResult {
    ksefReference: string;
    timestamp: string;
}
export interface UpoResult {
    ksefReference: string;
    upoXml: string;
    status: 'confirmed' | 'pending' | 'rejected';
}
export interface KsefAdapter {
    fetchInvoices(opts: FetchInvoicesOpts): Promise<Invoice[]>;
    sendInvoice(input: SendInvoiceInput): Promise<SendInvoiceResult>;
    getUpo(ksefReference: string): Promise<UpoResult>;
    initSession?(): Promise<void>;
    closeSession?(): Promise<void>;
}
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