Function toggleExperiment_

tools/experiments/experiments.js:313–343

* Toggles the experiment. * @param {string} id * @param {string} name * @param {boolean=} opt_on

(id, name, opt_on)

 * @param {boolean=} opt_on
 */
function toggleExperiment_(id, name, opt_on) {
  const currentlyOn = isExperimentOn_(id);
  const on = opt_on === undefined ? !currentlyOn : opt_on;
  // Protect against accidental choice.
  const confirmMessage = on
    ? 'Do you really want to activate the AMP experiment?'
    : 'Do you really want to deactivate the AMP experiment?';

  showConfirmation_(`${confirmMessage}: "${name}"`, () => {
    switch (id) {
      case EXPERIMENTAL_CHANNEL_ID:
        setAmpOptInCookie_(
          on ? AMP_OPT_IN_COOKIE.EXPERIMENTAL : AMP_OPT_IN_COOKIE.DISABLED
        );
        break;
      case BETA_CHANNEL_ID:
        setAmpOptInCookie_(
          on ? AMP_OPT_IN_COOKIE.BETA : AMP_OPT_IN_COOKIE.DISABLED
        );
        break;
      case NIGHTLY_CHANNEL_ID:
        setAmpOptInCookie_(
          on ? AMP_OPT_IN_COOKIE.NIGHTLY : AMP_OPT_IN_COOKIE.DISABLED
        );
        break;
      default:
        toggleExperiment(window, id, on);
    }
    update();
  });
}

/**
 * Shows confirmation and calls callback if it's approved.