/** * The Bridge * * The bridge is responsible for handing communication from the server to the frontend. * Data should only be flowing server -> frontend. * As the architecture improves, the number of cross requires here should go down * Eventually, the aim is to make this a component that is initialized on boot and is either handed to or actively creates the frontend, if the frontend is desired. * * This file is a great place for all the cross-component event handling in lieu of refactoring * NOTE: You may require anything from shared, the frontend or server here - it is the one place (other than boot) that is allowed :) */ const debug = require('@tryghost/debug')('bridge'); const errors = require('@tryghost/errors'); const logging = require('@tryghost/logging'); const tpl = require('@tryghost/tpl'); const themeEngine = require('./frontend/services/theme-engine'); const cardAssetService = require('./frontend/services/card-assets'); const routerManager = require('./frontend/services/routing').routerManager; const settingsCache = require('./shared/settings-cache'); // Listen to settings.lang.edited, similar to the member service and models/base/listeners const events = require('./server/lib/common/events'); const messages = { activateFailed: 'Unable to activate the theme "{theme}".' }; class Bridge { init() { /** * When locale changes, we reload theme translations * @deprecated: the term "lang" was deprecated in favor of "locale" publicly in 4.0 */ events.on('settings.lang.edited', (model) => { debug('Active theme init18n'); this.getActiveTheme().initI18n({locale: model.get('value')}); }); // NOTE: eventually this event should somehow be listened on and handled by the URL Service // for now this eliminates the need for the frontend routing to listen to // server events events.on('settings.timezone.edited', (model) => { routerManager.handleTimezoneEdit(model); }); } getActiveTheme() { return themeEngine.getActive(); } async activateTheme(loadedTheme, checkedTheme) { let settings = { locale: settingsCache.get('lang') }; // 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 { themeEngine.setActive(settings, loadedTheme, checkedTheme); const cardAssetConfig = this.getCardAssetConfig(); debug('reload card assets config', cardAssetConfig); await cardAssetService.load(cardAssetConfig); } catch (err) { logging.error(new errors.InternalServerError({ message: tpl(messages.activateFailed, {theme: loadedTheme.name}), err: err })); } } getCardAssetConfig() { if (this.getActiveTheme()) { return this.getActiveTheme().config('card_assets'); } else { return true; } } async reloadFrontend() { debug('reload frontend'); const siteApp = require('./frontend/web/site'); await siteApp.reload(); } } const bridge = new Bridge(); module.exports = bridge;