/// <reference types="node" />
import { PathLike } from 'fs';
import { BaseInvoice, BaseCompanyInfo, Vat } from '../models';
import { BigNumber } from '../utilities/big-number.utilities';
import { PdfMakeColumn, PdfMakeContent, PdfMakeDocumentDefinition, PdfMakeDynamicContent, PdfMakeImageDefinition, PdfMakeTableCell } from '../utilities/pdf.utilities';
/**
 * Handles the generation of invoice pdfs.
 * Uses pdfmake.
 */
export declare abstract class BasePdfService<Invoice extends BaseInvoice, CompanyInfo extends BaseCompanyInfo> {
    /**
     * The font size that should be used for the footer.
     * @default 10
     */
    protected readonly FOOTER_FONT_SIZE: number;
    /**
     * The currency used for formatting prices.
     * @default 'USD'
     */
    protected readonly CURRENCY: string;
    /**
     * The locale to use for formatting dates.
     * @default 'en-US'
     */
    protected readonly LOCALE: string;
    /**
     * The timezone to use for formatting dates.
     * @default 'America/New_York'
     */
    protected readonly TIMEZONE: string;
    /**
     * Globally defined images which can be referenced by name inside the document definition.
     * @default undefined
     */
    protected readonly IMAGES?: Record<string, string | PdfMakeImageDefinition>;
    /**
     * Available options:
     *
     * - A reference by name to an image defined in PdfMakeDocumentDefinition.images
     * - A data URL
     * - A remote URL via http:// or https://.
     *
     * Supported image formats: JPEG, PNG.
     * @default undefined
     */
    protected readonly LOGO?: string;
    /**
     * The label for the phone number on the invoice.
     * @default 'Phone'
     */
    protected readonly PHONE_LABEL: string;
    /**
     * The label for the email on the invoice.
     * @default 'E-Mail'
     */
    protected readonly EMAIL_LABEL: string;
    /**
     * The headline of the invoice.
     * @default 'Invoice'
     */
    protected readonly HEADLINE: string;
    /**
     * The font size of the headline.
     * @default 20
     */
    protected readonly HEADLINE_FONT_SIZE: number;
    /**
     * The label for the invoice number on the invoice.
     * @default 'Invoice No.'
     */
    protected readonly INVOICE_NUMBER_LABEL: string;
    /**
     * The notice below the invoice number.
     * @default 'Please specify when making payments and invoicing!'
     */
    protected readonly INVOICE_NUMBER_NOTICE: string;
    /**
     * The label for the date on the invoice.
     * @default 'Date'
     */
    protected readonly DATE_LABEL: string;
    /**
     * The label for the date of performance on the invoice.
     * @default 'Date of performance'
     */
    protected readonly PERFORMANCE_DATE_LABEL: string;
    /**
     * Whether or not a performance date should be displayed on the invoice.
     * @default false
     */
    protected readonly SHOW_PERFORMANCE_DATE: boolean;
    /**
     * Whether or not a due date should be displayed on the invoice.
     * @default true
     */
    protected readonly SHOW_DUE_DATE: boolean;
    /**
     * The label for the due date on the invoice.
     * @default 'Due date'
     */
    protected readonly DUE_DATE_LABEL: string;
    /**
     * The font size that should be used inside the tables.
     * @default 12
     */
    protected readonly TABLE_FONT_SIZE: number;
    /**
     * The label for item name on the invoice.
     * @default 'Name'
     */
    protected readonly ITEM_NAME_LABEL: string;
    /**
     * The label for the total when no taxes exist on the invoice.
     * @default 'Total'
     */
    protected readonly TOTAL_LABEL: string;
    /**
     * The label for the total before tax value on the invoice.
     * @default 'Total (excl. tax)'
     */
    protected readonly TOTAL_BEFORE_TAX_LABEL: string;
    /**
     * The label for the total after tax value on the invoice.
     * @default 'Total (incl. tax)'
     */
    protected readonly TOTAL_AFTER_TAX_LABEL: string;
    /**
     * The label for tax value on the invoice.
     * @default 'VAT'
     */
    protected readonly TAX_LABEL: string;
    /**
     * The label for tax number on the invoice.
     * @default 'Tax number:'
     */
    protected readonly TAX_NUMBER_LABEL: string;
    /**
     * The label for the ceo on the invoice.
     * @default 'CEO:'
     */
    protected readonly CEO_LABEL: string;
    /**
     * The label for item amount on the invoice.
     * @default 'Amount'
     */
    protected readonly ITEM_AMOUNT_LABEL: string;
    /**
     * The label for single price of an item on the invoice.
     * @default 'Price'
     */
    protected readonly ITEM_SINGLE_PRICE_LABEL: string;
    /**
     * The label for total price of an item on the invoice.
     * @default 'Total'
     */
    protected readonly ITEM_TOTAL_PRICE_LABEL: string;
    /**
     * The tax office to display in the footer.
     * Can be omitted.
     */
    protected abstract readonly TAX_OFFICE?: string;
    /**
     * The label for the bank details in the footer.
     */
    protected readonly BANK_DETAILS_LABEL: string;
    /**
     * The label for the iban to display in the footer.
     * @default 'IBAN:'
     */
    protected readonly IBAN_LABEL: string;
    /**
     * The label for the bic to display in the footer.
     * @default 'BIC/SWIFT:'
     */
    protected readonly BIC_LABEL: string;
    /**
     * The bank name to display in the footer.
     * Can be omitted.
     */
    protected abstract readonly BANK_NAME?: string;
    /**
     * Information about the company like the address.
     */
    protected abstract readonly companyInfo: CompanyInfo;
    /**
     * Creates a pdf for the provided invoice and handles it afterwards.
     * @param invoice - The invoice to create the pdf for.
     */
    createInvoicePdf(invoice: Invoice): Promise<void>;
    /**
     * Converts the pdf at the given path to pdf-a.
     * @param pdfFilePath - The path to the pdf that should be converted.
     * @throws When there was an error in the script.
     */
    pdfToPdfA(pdfFilePath: string | PathLike): void;
    /**
     * Attaches an X-Rechnung to the invoice pdf at the given path.
     * @param pdfFilePath - The path of the invoice pdf that the X-Rechnung should be attached to.
     * @param invoice - The invoice data.
     */
    pdfToXRechnung(pdfFilePath: string, invoice: Invoice): Promise<void>;
    /**
     * Converts the invoice pdf at the given path to conform to the factur-x invoice standard.
     * @param pdfFilePath - The path of the invoice pdf that should be transformed.
     * @param invoice - The invoice data.
     * @param producer - The producer that should be set. Defaults to `lbx-invoice`.
     */
    /**
     * What to do with the pdf after it has been created.
     * @param pdfData - The pdf content in the form of a base 64 string.
     */
    protected abstract handleFinishedInvoicePdf(pdfData: string, invoice: Invoice): unknown;
    /**
     * Generates a pdfmake document definition for the given invoice.
     * @param invoice - The invoice to generate the document definition for.
     * @returns The invoice document definition.
     */
    protected generateInvoiceDocumentDefinition(invoice: Invoice): PdfMakeDocumentDefinition;
    /**
     * Gets all relevant tax groups for the pdf file.
     * @param invoice - The invoice to get the tax groups for.
     * @returns The tax groups for the pdf.
     */
    protected getTaxGroups(invoice: Invoice): Vat[];
    /**
     * Gets the table that displays the total price of all items.
     * @param invoice - The invoice to get the table from.
     * @param taxGroups - The different tax groups that need to be taken into consideration.
     * @returns The total price of all items and the tax groups.
     */
    protected getTotalTable(invoice: Invoice, taxGroups: Vat[]): PdfMakeContent;
    /**
     * Gets the body of the total table.
     * @param invoice - The invoice to build the body from.
     * @param taxGroups - The different tax groups that need to be taken into consideration.
     * @returns The body of the total table.
     */
    protected getTotalBody(invoice: Invoice, taxGroups: Vat[]): PdfMakeTableCell[][];
    /**
     * Gets the table that displays all invoice items.
     * @param invoice - The invoice to build the table from.
     * @param taxGroups - The different tax groups that need to be taken into consideration.
     * @returns The table with all invoice items.
     */
    protected getInvoiceItemsTable(invoice: Invoice, taxGroups: Vat[]): PdfMakeContent;
    /**
     * Gets the body of the invoice items table.
     * @param invoice - The invoice to build the body from.
     * @param taxGroups - The different tax groups that need to be taken into consideration.
     * @returns The body of the invoice items table.
     */
    protected getInvoiceItemsBody(invoice: Invoice, taxGroups: Vat[]): PdfMakeTableCell[][];
    /**
     * Gets the headers for the invoice items table. If the only tax group is 0, the tax column is removed.
     * @param taxGroups - The different tax groups that need to be taken into consideration.
     * @returns The headers of the invoice items table.
     */
    protected getInvoiceItemsHeaders(taxGroups: Vat[]): PdfMakeTableCell[];
    /**
     * Formats the given number as a price.
     * Uses the locale and currency values of this class.
     * @param value - The number to format as a price.
     * @returns A string representation of the number, including the currency symbol etc.
     */
    protected formatPrice(value: number): string;
    /**
     * Formats the given number as a percentage.
     * Uses the locale of this class.
     * @param value - The number to format as a percentage.
     * @returns A string representation of the number, including the percentage symbol.
     */
    protected formatPercent(value: number | BigNumber): string;
    /**
     * Gets the text that should be displayed before the actual invoice items start.
     * @param paragraphs - The paragraphs to get the text from.
     * @returns The text that should be displayed before the actual invoice items.
     */
    protected getContentFromParagraphs(paragraphs: string[]): PdfMakeContent[];
    /**
     * Gets the headline of the invoice.
     * @returns The headline.
     */
    protected getHeadline(): PdfMakeContent;
    /**
     * Gets the invoice number and the dates.
     * @param invoice - The invoice to build the content from.
     * @returns The content containing the invoice number and the date, performance date and due date.
     */
    protected getNumberAndDates(invoice: Invoice): PdfMakeContent;
    /**
     * Formats the given date using the locale and timezone.
     * @param date - The date to format.
     * @returns The formatted date string with the locale and timezone.
     */
    protected formatDate(date: Date): string;
    /**
     * Gets the Content of the header.
     * @returns A row with the logo or an empty array if no logo has been specified.
     */
    protected getHeader(): PdfMakeDynamicContent | PdfMakeContent;
    /**
     * Gets the letterhead.
     * @param invoice - The invoice to get the letterhead from.
     * @returns The letterhead of the customer and the company.
     */
    protected getLetterhead(invoice: Invoice): PdfMakeContent;
    /**
     * Gets the letterhead of the company.
     * @returns The letterhead of the company, containing full name, address and contact information.
     */
    protected getCompanyLetterheadColumn(): PdfMakeColumn;
    /**
     * Gets the letterhead of the customer.
     * @param invoice - The invoice to get the customer letterhead from.
     * @returns The letterhead of the customer, containing the name and address.
     */
    protected getCustomerLetterheadColumn(invoice: Invoice): PdfMakeColumn;
    /**
     * Gets the font size for the provided company address line.
     * Checks if the address line is too big and makes the font smaller accordingly.
     * @param companyAddressLine - The company address line of the invoice.
     * @returns The font size to use for the letter head.
     */
    protected getFontSizeForLetterhead(companyAddressLine: string): number;
    /**
     * Gets the Content of the footer.
     * @returns Multiple rows containing information about the company and payment data.
     */
    protected getFooter(): PdfMakeDynamicContent | PdfMakeContent;
    /**
     * Gets the first column of the footer.
     * @returns The column definition.
     */
    protected getFirstFooterColumn(): PdfMakeColumn;
    /**
     * Gets the second column of the footer.
     * @returns The column definition.
     */
    protected getSecondFooterColumn(): PdfMakeColumn;
}