RTL/server/utils/request.ts

import axios from 'axios';
import * as https from 'https';

// Drop-in replacement for the deprecated request-promise, backed by axios.
// Accepts the same options shape used across the controllers ({ url, baseUrl,
// uri, qs, form, body, headers, rejectUnauthorized, json }), resolves with the
// response body directly and rejects with a plain, serializable object that
// mirrors request-promise's StatusCodeError/RequestError shape expected by
// CommonService.handleError. Auth headers are intentionally excluded from the
// rejected error so they can never leak into logs or API error responses.

const insecureAgent = new https.Agent({ rejectUnauthorized: false });

const buildConfig = (options, method: string) => {
  const config: any = {
    url: options.url && options.url !== '' ? options.url : options.uri,
    method: method || options.method || 'GET',
    headers: options.headers ? { ...options.headers } : {},
    // Bound hung upstreams; 10 minutes accommodates the slowest legitimate
    // operations (LND's /v2/router/send streams up to timeout_seconds=600 and
    // slow CLN channel operations get req.setTimeout(600000) upstream).
    timeout: 600000
  };
  if (options.baseUrl) { config.baseURL = options.baseUrl; }
  if (options.qs && Object.keys(options.qs).length > 0) { config.params = options.qs; }
  if (options.rejectUnauthorized === false) { config.httpsAgent = insecureAgent; }
  if (options.form !== null && options.form !== undefined) {
    if (typeof options.form === 'string') {
      // Pre-encoded (or raw JSON string for LND's wallet endpoints), send as-is.
      config.data = options.form;
    } else {
      const params = new URLSearchParams();
      Object.entries(options.form).forEach(([key, value]) => {
        if (value === null || value === undefined) { return; }
        if (Array.isArray(value)) {
          // Eclair parses list fields as comma-separated values; omit empty lists
          // (request-promise's qs encoding also dropped them).
          if (value.length > 0) { params.append(key, value.join(',')); }
        } else {
          params.append(key, String(value));
        }
      });
      config.data = params;
    }
    config.headers['Content-Type'] = 'application/x-www-form-urlencoded';
  } else if (options.body !== null && options.body !== undefined) {
    config.data = options.body;
  }
  if (options.json !== true) {
    // Callers without json: true (block explorer, currency rates) JSON.parse the body themselves.
    config.responseType = 'text';
    config.transformResponse = [(data) => data];
  }
  return config;
};

const toRequestPromiseError = (err, config) => {
  const errOptions = { url: config.url, method: config.method };
  if (err.response) {
    return {
      name: 'StatusCodeError',
      statusCode: err.response.status,
      message: err.response.status + ' - ' + JSON.stringify(err.response.data),
      error: err.response.data,
      options: errOptions
    };
  }
  const message = err.message && err.message !== '' ? err.message : err.code;
  return {
    name: 'RequestError',
    message: message,
    error: { code: err.code, message: message },
    options: errOptions
  };
};

const call = (options, method?: string) => {
  const config = buildConfig(options, method);
  return axios.request(config).then((response) => response.data).catch((err) => Promise.reject(toRequestPromiseError(err, config)));
};

const request = (options) => call(options);
request.get = (options) => call(options, 'GET');
request.post = (options) => call(options, 'POST');
request.put = (options) => call(options, 'PUT');
request.delete = (options) => call(options, 'DELETE');

export default request;