import { PMTGatewayConfig, CreatePaymentIntentRequest, PaymentIntent } from '../types';
export declare class APIClient {
    private config;
    private baseUrl;
    constructor(config: PMTGatewayConfig);
    private getDefaultApiUrl;
    private request;
    createPaymentIntent(request: CreatePaymentIntentRequest): Promise<PaymentIntent>;
    getPaymentIntent(id: string): Promise<PaymentIntent>;
    cancelPaymentIntent(id: string): Promise<PaymentIntent>;
    getSupportedWallets(): Promise<Array<{
        id: string;
        name: string;
        icon: string;
        downloadUrl: string;
    }>>;
    generateAuthChallenge(address: string, chainId?: string): Promise<{
        challenge: {
            message: string;
            nonce: string;
            timestamp: number;
        };
    }>;
    getSupportedChains(): Promise<Array<{
        id: string;
        name: string;
        rpcUrl: string;
        ss58Format: number;
        decimals: number;
        symbol: string;
    }>>;
    verifyWalletAuth(data: {
        signature: string;
        address: string;
        challenge: {
            message: string;
            nonce: string;
            timestamp: number;
        };
        merchantId: string;
        chainId?: string;
    }): Promise<{
        token: string;
        address: string;
        merchantId: string;
        sessionId?: string;
        walletType?: string;
    }>;
    getConnectionStatus(): Promise<{
        connected: boolean;
        address?: string;
        merchantId?: string;
        type?: string;
    }>;
}
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