import { AxiosInstance } from "axios";
import { Customer, CreateCustomerRequest, UpdateCustomerRequest } from "../types/customer.types";
/**
 * Customer Service – CRUD operations for customer management.
 * Uses multipart/form-data for requests that include ID card images.
 */
export declare class CustomerService {
    private readonly httpClient;
    constructor(httpClient: AxiosInstance);
    /**
     * Get all customers with pagination metadata.
     *
     * @returns Customer list and pagination info
     * @throws {EkycError} When request fails
     */
    getCustomers(): Promise<{
        data: Customer[];
        meta: Record<string, unknown>;
    }>;
    /**
     * Get a single customer by ID.
     *
     * @param id - Customer ID
     * @returns Customer details
     * @throws {EkycError} When request fails
     */
    getCustomerById(id: string): Promise<Customer>;
    /**
     * Create a new customer with ID card images (multipart/form-data).
     *
     * @param data - Customer creation data
     * @returns Created customer
     * @throws {EkycError} When request fails
     */
    createCustomer(data: CreateCustomerRequest): Promise<Customer>;
    /**
     * Update an existing customer (multipart/form-data).
     *
     * @param id - Customer ID
     * @param data - Fields to update
     * @returns Updated customer
     * @throws {EkycError} When request fails
     */
    updateCustomer(id: string, data: UpdateCustomerRequest): Promise<Customer>;
}
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