text: const {events, i18n} = require('../../../server/lib/common');
  const logging = require('../../../shared/logging');
  const errors = require('@tryghost/errors');
  const active = require('../theme-engine/active');
  
  function activate(loadedTheme, checkedTheme, error) {
      // no need to check the score, activation should be used in combination with validate.check
      // Use the two theme objects to set the current active theme
      try {
          let previousGhostAPI;
  
          if (active.get()) {
              previousGhostAPI = active.get().engine('ghost-api');
          }
  
          active.set(loadedTheme, checkedTheme, error);
          const currentGhostAPI = active.get().engine('ghost-api');
  
          events.emit('services.themes.activated', loadedTheme.name);
  
          if (previousGhostAPI !== undefined && (previousGhostAPI !== currentGhostAPI)) {
              events.emit('services.themes.api.changed');
              const siteApp = require('../../../server/web/site/app');
              siteApp.reload();
          }
      } catch (err) {
          logging.error(new errors.InternalServerError({
              message: i18n.t('errors.middleware.themehandler.activateFailed', {theme: loadedTheme.name}),
              err: err
          }));
      }
  }
  
  module.exports = activate;
  