import { AxiosInstance } from 'axios';
import { CustomerInfo } from './CustomerInfo';
import { SubscriptionInfo } from './SubscriptionInfo';
import { TransactionInfo } from './TransactionInfo';
export declare type SendRequestArgs = {
    requestId: string;
    cache?: boolean;
};
export declare type FetchTransactionArgs = {
    merchantConfig: string;
    transactionId: string;
    cache?: boolean;
};
export declare type FetchSubscriptionArgs = {
    merchantConfig: string;
    subscriptionToken: string;
    cache?: boolean;
};
export declare type CancelSubscriptionArgs = {
    merchantConfig: string;
    subscriptionToken: string;
};
export declare type FetchCustomerArgs = {
    merchantConfig: string;
    customerToken: string;
    cache?: boolean;
};
export declare type UpdateCustomerArgs = {
    merchantConfig: string;
    customerToken: string;
    fields: {
        [key: string]: string | number | boolean;
    };
};
export interface IEpaymentApiProxy {
    fetchTransaction(args: FetchTransactionArgs): Promise<TransactionInfo>;
    fetchSubscription(args: FetchSubscriptionArgs): Promise<SubscriptionInfo>;
    cancelSubscription(args: CancelSubscriptionArgs): any;
    fetchCustomer(args: FetchCustomerArgs): Promise<CustomerInfo>;
    updateCustomer(args: UpdateCustomerArgs): any;
}
export declare class CachedEpaymentApiProxy implements IEpaymentApiProxy {
    private proxyUrl;
    private http;
    private requestPool;
    constructor(proxyUrl: string, http?: AxiosInstance);
    fetchTransaction({ merchantConfig, transactionId, cache }: FetchTransactionArgs): Promise<TransactionInfo>;
    fetchSubscription({ merchantConfig, subscriptionToken, cache }: FetchSubscriptionArgs): Promise<SubscriptionInfo>;
    cancelSubscription({ merchantConfig, subscriptionToken }: CancelSubscriptionArgs): Promise<any>;
    fetchCustomer({ merchantConfig, customerToken, cache }: FetchCustomerArgs): Promise<CustomerInfo>;
    updateCustomer({ merchantConfig, customerToken, fields }: UpdateCustomerArgs): Promise<CustomerInfo>;
    private sendRequest;
    private clearRequestPool;
    private generateRequestId;
    private getNormalizedFinalStatus;
    private getNormalizedPaymentMethod;
}
export declare function createEpaymentApiProxy(proxyUrl: string): IEpaymentApiProxy;