import { ExternalApiService } from '../services/external-api-service.js';
export interface DocumentParseResult {
    content: string;
    metadata: {
        title?: string;
        author?: string;
        pages?: number;
        language?: string;
        fileSize?: number;
        mimeType?: string;
        extractedAt: Date;
    };
    sections?: {
        heading: string;
        content: string;
        level: number;
    }[];
    tables?: {
        headers: string[];
        rows: string[][];
    }[];
    links?: {
        url: string;
        text: string;
    }[];
}
export interface DocumentParseOptions {
    maxContentLength?: number;
    extractTables?: boolean;
    extractLinks?: boolean;
    extractSections?: boolean;
    allowedMimeTypes?: string[];
    timeout?: number;
}
export declare class DocumentParser {
    private static readonly DEFAULT_OPTIONS;
    private externalApiService;
    constructor(externalApiService: ExternalApiService);
    parseDocumentFromUrl(url: string, options?: DocumentParseOptions): Promise<DocumentParseResult>;
    private parsePdf;
    private parseHtml;
    private parseMarkdown;
    private parseText;
    private isValidUrl;
    private isAllowedMimeType;
    private extractTextFromPdf;
    private stripHtmlTags;
    private extractHtmlTitle;
    private extractHtmlSections;
    private extractHtmlTables;
    private extractHtmlLinks;
    private stripMarkdownFormatting;
    private extractMarkdownTitle;
    private extractMarkdownSections;
    private extractMarkdownTables;
    private extractMarkdownLinks;
    private extractSections;
    private extractTablesFromText;
    private extractLinksFromText;
    private extractTableHeaders;
    private extractTableRows;
}