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refs https://github.com/TryGhost/Toolbox/issues/135 - The reason the test **settings** test was failing when the force start flag was removed in the **custom themes** was the bridge! The bridge was trying to execute function on the frontend when the boot was done without initializing the frontend. The setting test was changing locale and the timezone which triggered events calling up on frontend components - we clearly don't want to do this when the instance is booted without the frontend - To make event initialization conditional moved it to the "init". This way the event listeners are only set up when we boot with the "frontend" flag set to true
112 lines
4 KiB
JavaScript
112 lines
4 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 initialized 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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* NOTE: You may require anything from shared, the frontend or server here - it is the one place (other than boot) that is allowed :)
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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 routerManager = require('./frontend/services/routing').routerManager;
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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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init() {
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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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// NOTE: eventually this event should somehow be listened on and handled by the URL Service
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// for now this eliminates the need for the frontend routing to listen to
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// server events
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events.on('settings.timezone.edited', (model) => {
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routerManager.handleTimezoneEdit(model);
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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) {
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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);
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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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getCardAssetConfig() {
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if (this.getActiveTheme()) {
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return this.getActiveTheme().config('card_assets');
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} else {
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return true;
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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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const cardAssetConfig = this.getCardAssetConfig();
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debug('reload card assets config', cardAssetConfig);
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const cardAssetService = require('./frontend/services/card-assets');
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cardAssetService.load(cardAssetConfig);
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debug('reload frontend', apiVersion);
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const siteApp = require('./frontend/web/site');
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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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