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https://github.com/TryGhost/Ghost.git
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61e1b19d46
- This is a precursor to trying to split apart into:
- model events + webhooks system which makes sense
- frontend events which should be independent or removed
- maybe some concept of a settings manager that we can use in various places to bind logic 🤔
- other usages of events that should be refactored to not use events
90 lines
3.1 KiB
JavaScript
90 lines
3.1 KiB
JavaScript
/**
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* The Bridge
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*
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* The bridge is responsible for handing communication from the server to the frontend.
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* Data should only be flowing server -> frontend.
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* As the architecture improves, the number of cross requires here should go down
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* Eventually, the aim is to make this a component that is initialised on boot and is either handed to or actively creates the frontend, if the frontend is desired.
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*
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* This file is a great place for all the cross-component event handling in lieu of refactoring
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*/
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const debug = require('@tryghost/debug')('bridge');
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const errors = require('@tryghost/errors');
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const config = require('./shared/config');
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const logging = require('@tryghost/logging');
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const tpl = require('@tryghost/tpl');
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const themeEngine = require('./frontend/services/theme-engine');
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const settingsCache = require('./shared/settings-cache');
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// Listen to settings.lang.edited, similar to the member service and models/base/listeners
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const events = require('./server/lib/common/events');
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const messages = {
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activateFailed: 'Unable to activate the theme "{theme}".'
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};
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class Bridge {
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constructor() {
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/**
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* When locale changes, we reload theme translations
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* @deprecated: the term "lang" was deprecated in favor of "locale" publicly in 4.0
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*/
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events.on('settings.lang.edited', (model) => {
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debug('Active theme init18n');
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this.getActiveTheme().initI18n({locale: model.get('value')});
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});
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}
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getActiveTheme() {
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return themeEngine.getActive();
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}
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activateTheme(loadedTheme, checkedTheme, error) {
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let settings = {
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locale: settingsCache.get('lang')
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};
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// no need to check the score, activation should be used in combination with validate.check
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// Use the two theme objects to set the current active theme
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try {
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let previousGhostAPI;
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if (this.getActiveTheme()) {
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previousGhostAPI = this.getActiveTheme().engine('ghost-api');
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}
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themeEngine.setActive(settings, loadedTheme, checkedTheme, error);
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const currentGhostAPI = this.getActiveTheme().engine('ghost-api');
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if (previousGhostAPI !== undefined && (previousGhostAPI !== currentGhostAPI)) {
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events.emit('services.themes.api.changed');
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this.reloadFrontend();
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}
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} catch (err) {
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logging.error(new errors.InternalServerError({
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message: tpl(messages.activateFailed, {theme: loadedTheme.name}),
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err: err
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}));
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}
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}
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getFrontendApiVersion() {
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if (this.getActiveTheme()) {
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return this.getActiveTheme().engine('ghost-api');
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} else {
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return config.get('api:versions:default');
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}
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}
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reloadFrontend() {
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const apiVersion = this.getFrontendApiVersion();
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debug('reload frontend', apiVersion);
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const siteApp = require('./server/web/site/app');
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siteApp.reload({apiVersion});
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}
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}
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const bridge = new Bridge();
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module.exports = bridge;
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