l402/dist/client/axios.js

L402 client and tools for Javascript.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.setupL402Interceptor = void 0;
const axios_1 = __importDefault(require("axios"));
function setupL402Interceptor(instance, wallet, store) {
    instance.interceptors.request.use((config) => {
        const url = axios_1.default.getUri(config);
        const method = config.method?.toUpperCase() || 'GET';
        const token = store.get(url || '', method);
        if (token) {
            config.headers['Authorization'] = `${token}`;
        }
        return config;
    });
    instance.interceptors.response.use((response) => response, async (error) => {
        if (axios_1.default.isAxiosError(error) && error.config && error.response && error.response.status === 402) {
            const config = error.config;
            const authHeader = error.response.headers['www-authenticate'] || '';
            const challenge = parseHeader(authHeader);
            if (challenge && challenge.invoice) {
                const paymentResult = await wallet.payInvoice(challenge.invoice);
                if (paymentResult.success) {
                    const l402Token = `${challenge.header_key} ${challenge.macaroon}:${paymentResult.preimage}`;
                    const url = axios_1.default.getUri(config);
                    const method = config.method?.toUpperCase() || 'GET';
                    store.put(url || '', l402Token, method);
                    error.config.headers['Authorization'] = l402Token;
                    return instance.request(error.config);
                }
            }
        }
        return Promise.reject(error);
    });
}
exports.setupL402Interceptor = setupL402Interceptor;
function parseHeader(header) {
    const headerKeyMatch = /^(LSAT|L402)/.exec(header);
    const invoiceMatch = /invoice="([\w|\d]+)"/.exec(header);
    const macaroonMatch = /macaroon="([\w|\d\+\/=_-]+)"/.exec(header);
    if (invoiceMatch && macaroonMatch) {
        return {
            header_key: headerKeyMatch ? headerKeyMatch[0] : '',
            invoice: invoiceMatch[1],
            macaroon: macaroonMatch[1],
        };
    }
    return null;
}
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