import { Service } from '../../services/service';
import * as v from 'valibot';
export declare const URL_METADATA_SVC = "UrlMetadataService";
declare const UrlMetadataAPIResponseSchema: v.ObjectSchema<{
    readonly title: v.SchemaWithPipe<readonly [v.StringSchema<undefined>, v.MinLengthAction<string, 1, undefined>]>;
    readonly description: v.OptionalSchema<v.StringSchema<undefined>, undefined>;
    readonly url: v.SchemaWithPipe<readonly [v.StringSchema<undefined>, v.UrlAction<string, undefined>]>;
    readonly urlOnly: v.SchemaWithFallback<v.SchemaWithPipe<readonly [v.StringSchema<undefined>, v.TransformAction<string, boolean>]>, false>;
    readonly image: v.SchemaWithFallback<v.OptionalSchema<v.SchemaWithPipe<readonly [v.StringSchema<undefined>, v.UrlAction<string, undefined>, v.MaxLengthAction<string, 1500, undefined>]>, undefined>, any>;
}, undefined>;
type UrlMetadataAPIResponse = v.InferInput<typeof UrlMetadataAPIResponseSchema>;
export declare class UrlMetaData {
    title: string;
    url: string;
    description?: string;
    image?: string;
    urlOnly: boolean;
    private constructor();
    static create(data: UrlMetadataAPIResponse): UrlMetaData | null;
}
export interface IUrlMetadataService {
    getUrlFromString(text: string): string | undefined;
    getUrlMetadata(url: string, timeout: number): Promise<UrlMetaData | null>;
}
/**
 * @module
 * @name UrlMetadataService
 * @public
 * @description This service manages urlMetadata in Rainbow.
 */
export declare class UrlMetadataService extends Service implements IUrlMetadataService {
    private logger;
    private authService;
    private linkRegex;
    private abortController;
    /**
     * @function getInstance
     * @static
     * @private
     * @description return the urlMetaSErvice singleton
     * @returns {UrlMetadataService} the UrlMetadataService instance
     */
    static getInstance(): UrlMetadataService;
    static build(): UrlMetadataService;
    private constructor();
    getUrlFromString(text: string): string | undefined;
    getUrlMetadata(url: string, timeout?: number): Promise<UrlMetaData | null>;
    abortUrlMetadataRequest(): void;
}
export {};
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