@bit-gpt/h402/dist/client/createPaymentHeader.d.ts

BitGPT's 402 open protocol for blockchain-native payments

import { PaymentRequirements } from "../types";
import { PaymentClient } from "../types";
/**
 * Creates a payment based header on the provided payment details and client.
 *
 * @param {PaymentRequirements} paymentRequirements - The details of the payment to be created
 * @param {PaymentClient} client - The client object containing chain-specific clients
 * @param h402Version
 * @returns {Promise<string>} A promise that resolves to the payment header
 *
 * @throws {Error} If payment details namespace is missing
 * @throws {Error} If the specified EVM network is not supported
 * @throws {Error} If evmClient is missing for EIP-155 payments
 * @throws {Error} If EVM client chainId doesn't match payment networkId
 * @throws {Error} If solanaClient is missing for Solana payments
 * @throws {Error} If the namespace is not supported
 * @throws {Error} If the payment scheme is not supported
 *
 * @description
 * This function handles the payment creation process by:
 * 1. Validating the payment namespace
 * 2.1 For EIP-155 (EVM) payments:
 *    - Verifies network support
 *    - Validates client configuration
 *    - Ensures chain ID matches
 *    - Processes the payment based on the specified scheme
 * 2.2 For Solana payments:
 *    - Verifies network support
 *    - Validates client configuration
 *    - Ensures signAndSendTransaction is available
 *    - Processes the payment based on the specified scheme
 * 3. Encodes and returns the payment data
 */
export declare function createPaymentHeader(client: PaymentClient, h402Version: number, paymentRequirements: PaymentRequirements): Promise<string>;
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