type SupportedGateway = 'stripe' | 'razorpay';
type KeyProps = {
    gateway: SupportedGateway;
    apiKey: string;
    apiSecret?: string;
};
type PaymentPayload = {
    gateway: SupportedGateway;
    amount: number;
    currency: string;
    description: string;
    customerEmail?: string;
    metadata?: Record<string, any>;
    paymentMethodTypes?: string[];
    customerId?: string;
    receiptId?: string;
};
type PaymentResponse = {
    success: boolean;
    gateway: SupportedGateway;
    message?: string;
    error?: any;
} & (StripePaymentResponse | RazorpayPaymentResponse);
type StripePaymentResponse = {
    gateway: 'stripe';
    clientSecret?: string;
    paymentIntentId?: string;
};
type RazorpayPaymentResponse = {
    gateway: 'razorpay';
    order?: any;
    orderId?: string;
};
type ValidationResponse = {
    success: boolean;
    gateway?: SupportedGateway;
    message?: string;
    account?: any;
    type?: string;
};
type PaymentVerificationPayload = {
    gateway: SupportedGateway;
    paymentId: string;
    orderId?: string;
    signature?: string;
};

declare class OnePay {
    private gatewayInstances;
    private apiSecrets;
    constructor(keys: KeyProps[]);
    validateGateway(gateway: SupportedGateway): Promise<ValidationResponse>;
    private validateStripe;
    private validateRazorpay;
    /**
     * Create a payment with the specified gateway
     */
    createPayment(payload: PaymentPayload): Promise<PaymentResponse>;
    /**
     * Create a payment intent with Razorpay
     */
    private createRazorpayPayment;
    /**
     * Create a payment intent with Stripe
     */
    private createStripePayment;
    /**
     * Verify a payment
     */
    verifyPayment(payload: PaymentVerificationPayload): Promise<PaymentResponse>;
    private verifyRazorpayPayment;
    private verifyStripePayment;
    /**
     * Refund a payment
     */
    refundPayment(gateway: SupportedGateway, paymentId: string, amount?: number): Promise<PaymentResponse>;
    private refundRazorpayPayment;
    private refundStripePayment;
    /**
     * Get payment details
     */
    getPaymentDetails(gateway: SupportedGateway, paymentId: string): Promise<PaymentResponse>;
    private getRazorpayPaymentDetails;
    private getStripePaymentDetails;
}

export { type KeyProps, OnePay, type PaymentPayload, type PaymentResponse, type PaymentVerificationPayload, type RazorpayPaymentResponse, type StripePaymentResponse, type SupportedGateway, type ValidationResponse };