import { AxiosInstance } from "axios";
import { Instance } from "../types";
import { GreenApiLogger } from "../utils/logger";
/**
 * Base client for GREEN-API interactions.
 * Provides common HTTP request methods and URL building.
 */
export declare abstract class BaseClient {
    protected instance: Instance;
    protected client: AxiosInstance;
    protected readonly baseUrl = "https://api.green-api.com";
    protected readonly logger: GreenApiLogger;
    /**
     * Creates a new BaseClient instance.
     *
     * @param instance - GREEN-API instance credentials
     */
    protected constructor(instance: Instance);
    /**
     * Builds the base URL for the GREEN-API instance.
     *
     * @returns The complete base URL
     */
    protected buildUrl(): string;
    /**
     * Builds an endpoint path with the API token.
     *
     * @param endpoint - API endpoint name
     * @returns Complete endpoint path
     */
    protected buildEndpoint(endpoint: string): string;
    /**
     * Makes an HTTP request to the GREEN-API.
     *
     * @param method - HTTP method (get, post or delete)
     * @param endpoint - API endpoint
     * @param data - Request body data (for POST)
     * @param queryParams - Query parameters (for GET/DELETE)
     * @param config - Additional Axios config
     * @param pathAfterToken - Additional path segment to append after the API token
     * @returns Promise resolving to the response data
     * @throws Error on failure
     */
    protected makeRequest<T>(method: "get" | "post" | "delete", endpoint: string, data?: any, queryParams?: Record<string, string | number>, config?: any, pathAfterToken?: string): Promise<T>;
    /**
     * Makes a file upload request to the GREEN-API.
     *
     * @param endpoint - API endpoint
     * @param formData - Form data with file
     * @param headers - Additional headers
     * @returns Promise resolving to the response data
     */
    protected makeFileUploadRequest<T>(endpoint: string, formData: FormData, headers?: Record<string, string>): Promise<T>;
}