/**
 * Copyright (C) 2019 Paytm.
 */
export declare class Payment {
    /**
     * createTxnToken gets PaymentDetail object as parameter and creates request
     * object to call ProcessRequest.process. It returns the
     * InitiateTransactionResponseBody which holds the createTxnToken result
     * parameters which will be used by merchant in future. It handles the exception
     * if occurred, and returns the respective object with error message.
     *
     * @param PaymentDetail
     * @return SDKResponse
     * @throws Exception
     */
    static createTxnToken(paymentDetails: any): Promise<any>;
    /**
     * validateCreateTxnToken checks if all mandatory parameters are present for
     * CreateTxnToken api call.
     * If not, then this will throw SDKException exception
     *
     * @param PaymentDetail
     * @throws Exception
     * @return void
     */
    private static validatePaymentDetailsObject;
    /**
     * @param PaymentDetail
     * @return InitiateTransactionRequest
     * @throws Exception
     */
    private static createInitiateTransactionRequest;
    /**
     * setSignature set the signature in head(SecureRequestHeader), signature will
     * be generated by the body(Object)
     *
     * @param SecureRequestHeader
     * @param InitiateTransactionRequestBody|NativePaymentStatusRequestBody
     * @throws Exception
     */
    private static setSignature;
    /**
     * getPaymentStatus gets constant parameters and creates request object to call
     * ProcessRequest.process. It returns the NativeMerchantStatusResponseBody which
     * holds the getPaymentStatus result parameters which will be used by merchant
     * in future. It handles the exception if occurred, and returns the respective
     * object with error message.
     *
     * @param PaymentStatusDetail
     * @return SDKResponse
     * @throws Exception
     */
    static getPaymentStatus(paymentStatusDetail: any): Promise<any>;
    /**
     * validateGetPaymentStatus checks if all mandatory parameters are present for
     * Payment Status api call. If not, then is will throw the
     * SDKException exception
     *
     * @param PaymentStatusDetail
     * @return void
     * @throws Exception
     */
    private static validatePaymentStatusDetailObject;
    /**
     * @param PaymentStatusDetail
     * @return NativePaymentStatusRequest
     * @throws Exception
     */
    private static createNativePaymentStatusRequest;
    /**
     * @param url
     * @param mid
     * @param orderId
     * @return string
     * Returns the url string with adding queryParameters
     */
    private static urlBuilder;
}