const logger = require("./logger.js");
const timediff = require("./timediff.js");

async function isOnline() {
  const url = global.config.draytek;
  let online = false;
  logger.info("checking if draytek is responding on url '" + url + "'...");
  const timestamp = Date.now();
  try {
    const controller = new AbortController();
    const timeoutId = setTimeout(async function () {
      logger.debug(
        "request to draytek timed out after " +
          timediff.inSeconds(timestamp) +
          " seconds!"
      );
      controller.abort();
    }, global.config.timeouts.request);

    const result = await fetch(url, {
      signal: controller.signal,
    });
    clearTimeout(timeoutId);
    logger.info(
      "draytek responded with status code '" +
        result.status +
        "' after " +
        timediff.inSeconds(timestamp) +
        " seconds!"
    );
    online = result.status === 200;
  } catch (err) {
    if (err.name !== "AbortError") {
      logger.error(
        "encountered an error checking if draytek is responding (" + err + ")"
      );
    }
  }
  return online;
}

// exports
module.exports = {
  isOnline,
};