"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.SERVER_TIME_MAP = void 0;
exports.createHttpClient = createHttpClient;
exports.getCurrentServerTime = getCurrentServerTime;
exports.version = void 0;
var _urijs = _interopRequireDefault(require("urijs"));
var _httpClient = require("../http-client");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/* eslint-disable global-require */

// eslint-disable-next-line prefer-import/prefer-import-over-require , @typescript-eslint/naming-convention

const version = exports.version = "14.3.3";
/**
 * keep a local map of server times
 * (export this purely for testing purposes)
 *
 * each entry will map the server domain to the last-known time and the local
 * time it was recorded, ex:
 *
 * @example
 * "horizon-testnet.stellar.org": {
 *   serverTime: 1552513039,
 *   localTimeRecorded: 1552513052
 * }
 *
 * @constant {Record.<string, ServerTime>}
 * @default {}
 * @memberof module:Horizon
 */
const SERVER_TIME_MAP = exports.SERVER_TIME_MAP = {};
function toSeconds(ms) {
  return Math.floor(ms / 1000);
}
function createHttpClient(headers) {
  const httpClient = (0, _httpClient.create)({
    headers: {
      ...headers,
      "X-Client-Name": "js-stellar-sdk",
      "X-Client-Version": version
    }
  });
  httpClient.interceptors.response.use(response => {
    const hostname = (0, _urijs.default)(response.config.url).hostname();
    let serverTime = 0;
    if (response.headers instanceof Headers) {
      const dateHeader = response.headers.get("date");
      if (dateHeader) {
        serverTime = toSeconds(Date.parse(dateHeader));
      }
    } else if (typeof response.headers === "object" && "date" in response.headers) {
      const responseHeader = response.headers; // Cast response.headers to the correct type
      if (typeof responseHeader.date === "string") {
        serverTime = toSeconds(Date.parse(responseHeader.date));
      }
    }
    const localTimeRecorded = toSeconds(new Date().getTime());
    if (!Number.isNaN(serverTime)) {
      SERVER_TIME_MAP[hostname] = {
        serverTime,
        localTimeRecorded
      };
    }
    return response;
  });
  return httpClient;
}

/**
 * Given a hostname, get the current time of that server (i.e., use the last-
 * recorded server time and offset it by the time since then.) If there IS no
 * recorded server time, or it's been 5 minutes since the last, return null.
 * @memberof module:Horizon
 *
 * @param {string} hostname Hostname of a Horizon server.
 * @returns {number} The UNIX timestamp (in seconds, not milliseconds)
 * representing the current time on that server, or `null` if we don't have
 * a record of that time.
 */
function getCurrentServerTime(hostname) {
  const entry = SERVER_TIME_MAP[hostname];
  if (!entry || !entry.localTimeRecorded || !entry.serverTime) {
    return null;
  }
  const {
    serverTime,
    localTimeRecorded
  } = entry;
  const currentTime = toSeconds(new Date().getTime());

  // if it's been more than 5 minutes from the last time, then null it out
  if (currentTime - localTimeRecorded > 60 * 5) {
    return null;
  }
  return currentTime - localTimeRecorded + serverTime;
}