Interface Einvoice

interface Einvoice {
    buyer: InvoiceBuyer;
    connection_id: string;
    created_at: string;
    environment: Environment;
    error: string | null;
    failed_step:
        | "publish"
        | "create_draft"
        | "update_draft"
        | "delete_draft"
        | null;
    id: string;
    issued_at: string
    | null;
    items: (
        InvoiceItem & { amount: number; total: number; vat_amount: number }
    )[];
    lookup_code: string | null;
    mode: "draft" | "publish";
    number: string | null;
    object: "einvoice";
    origin: "hatang" | "provider";
    payment_id: string | null;
    pdf_url: string | null;
    provider: string | null;
    provider_invoice_id: string | null;
    reference: string;
    related_invoice_id: string | null;
    series: string | null;
    status: EinvoiceStatus;
    sync_state: "in_sync" | "pending_push" | "conflict";
    tax_authority_code: string | null;
    template: InvoiceTemplateRef;
    totals: { subtotal: number; total: number; vat: number };
    transaction_id: string | null;
    updated_at: string;
    version: number;
}