feat(App): Add option to enable dark mode for supported services

src/components/settings/services/EditServiceForm.js

@@ -304,6 +304,7 @@ export default @observer class EditServiceForm extends Component {
 
                 <div className="settings__settings-group">
                   <h3>{intl.formatMessage(messages.headlineGeneral)}</h3>
+                  <Toggle field={form.$('isDarkModeEnabled')} />
                   <Toggle field={form.$('isEnabled')} />
                 </div>
               </div>

src/containers/settings/EditServiceScreen.js

@@ -6,6 +6,7 @@ import { defineMessages, intlShape } from 'react-intl';
 import UserStore from '../../stores/UserStore';
 import RecipesStore from '../../stores/RecipesStore';
 import ServicesStore from '../../stores/ServicesStore';
+import SettingsStore from '../../stores/SettingsStore';
 import Form from '../../lib/Form';
 import { gaPage } from '../../lib/analytics';
 
@@ -50,6 +51,10 @@ const messages = defineMessages({
     id: 'settings.service.form.icon',
     defaultMessage: '!!!Custom icon',
   },
+  enableDarkMode: {
+    id: 'settings.service.form.enableDarkMode',
+    defaultMessage: '!!!Enable Dark Mode',
+  },
 });
 
 export default @inject('stores', 'actions') @observer class EditServiceScreen extends Component {
@@ -111,6 +116,11 @@ export default @inject('stores', 'actions') @observer class EditServiceScreen ex
           default: null,
           type: 'file',
         },
+        isDarkModeEnabled: {
+          label: intl.formatMessage(messages.enableDarkMode),
+          value: service.isDarkModeEnabled,
+          default: this.props.stores.settings.all.app.darkMode,
+        },
       },
     };
 
@@ -238,6 +248,7 @@ EditServiceScreen.wrappedComponent.propTypes = {
     user: PropTypes.instanceOf(UserStore).isRequired,
     recipes: PropTypes.instanceOf(RecipesStore).isRequired,
     services: PropTypes.instanceOf(ServicesStore).isRequired,
+    settings: PropTypes.instanceOf(SettingsStore).isRequired,
   }).isRequired,
   router: PropTypes.shape({
     params: PropTypes.shape({

src/i18n/locales/en-US.json

@@ -130,6 +130,7 @@
   "settings.service.form.icon": "Custom icon",
   "settings.service.form.iconDelete": "Delete",
   "settings.service.form.iconUpload": "Drop your image, or click here",
+  "settings.service.form.enableDarkMode": "Enable Dark Mode",
   "settings.service.error.headline": "Error",
   "settings.service.error.goBack": "Back to services",
   "settings.service.error.message": "Could not load service recipe.",

src/models/Recipe.js

@@ -1,5 +1,7 @@
 import emailParser from 'address-rfc2822';
 import semver from 'semver';
+import fs from 'fs-extra';
+import path from 'path';
 
 export default class Recipe {
   id = '';
@@ -73,4 +75,8 @@ export default class Recipe {
 
     return [];
   }
+
+  get hasDarkMode() {
+    return fs.pathExistsSync(path.join(this.path, 'darkmode.css'));
+  }
 }

src/models/Service.js

@@ -28,6 +28,7 @@ export default class Service {
   @observable iconUrl = '';
   @observable hasCustomUploadedIcon = false;
   @observable hasCrashed = false;
+  @observable isDarkModeEnabled = false;
 
   constructor(data, recipe) {
     if (!data) {
@@ -64,6 +65,8 @@ export default class Service {
 
     this.isMuted = data.isMuted !== undefined ? data.isMuted : this.isMuted;
 
+    this.isDarkModeEnabled = data.isDarkModeEnabled !== undefined ? data.isDarkModeEnabled : this.isDarkModeEnabled;
+
     this.hasCustomUploadedIcon = data.hasCustomIcon !== undefined ? data.hasCustomIcon : this.hasCustomUploadedIcon;
 
     this.recipe = recipe;

src/stores/ServicesStore.js

@@ -214,6 +214,14 @@ export default class ServicesStore extends Store {
     await request._promise;
     this.actionStatus = request.result.status;
 
+    if (service.isEnabled) {
+      this._sendIPCMessage({
+        serviceId,
+        channel: 'service-settings-update',
+        args: newData,
+      });
+    }
+
     if (redirect) {
       this.stores.router.push('/settings/services');
       gaEvent('Service', 'update', service.recipe.id);

src/webview/darkmode.js

@@ -0,0 +1,28 @@
+import path from 'path';
+import fs from 'fs-extra';
+
+const ID = 'franz-theme-dark-mode';
+
+export function injectDarkModeStyle(recipePath) {
+  const darkModeStyle = path.join(recipePath, 'darkmode.css');
+  if (fs.pathExistsSync(darkModeStyle)) {
+    const data = fs.readFileSync(darkModeStyle);
+    const styles = document.createElement('style');
+    styles.id = ID;
+    styles.innerHTML = data.toString();
+
+    document.querySelector('head').appendChild(styles);
+  }
+}
+
+export function removeDarkModeStyle() {
+  const style = document.querySelector(`#${ID}`);
+
+  if (style) {
+    style.remove();
+  }
+}
+
+export function isDarkModeStyleInjected() {
+  return !!document.querySelector(`#${ID}`);
+}

src/webview/plugin.js

@@ -6,18 +6,29 @@ import { isDevMode } from '../environment';
 import RecipeWebview from './lib/RecipeWebview';
 
 import Spellchecker from './spellchecker';
+import { injectDarkModeStyle, isDarkModeStyleInjected, removeDarkModeStyle } from './darkmode';
 import './notifications';
 
 const debug = require('debug')('Franz:Plugin');
 
+window.franzSettings = {};
+let serviceData;
+
 ipcRenderer.on('initializeRecipe', (e, data) => {
   const modulePath = path.join(data.recipe.path, 'webview.js');
   // Delete module from cache
   delete require.cache[require.resolve(modulePath)];
   try {
     // eslint-disable-next-line
     require(modulePath)(new RecipeWebview(), data);
-    debug('Initialize Recipe');
+    debug('Initialize Recipe', data);
+
+    serviceData = data;
+
+    if (data.isDarkModeEnabled) {
+      injectDarkModeStyle(data.recipe.path);
+      debug('Add dark theme styles');
+    }
   } catch (err) {
     debug('Recipe initialization failed', err);
   }
@@ -33,11 +44,27 @@ new ContextMenuListener((info) => { // eslint-disable-line
 });
 
 ipcRenderer.on('settings-update', (e, data) => {
-  spellchecker.toggleSpellchecker(data.enableSpellchecking);
   debug('Settings update received', data);
+
+  spellchecker.toggleSpellchecker(data.enableSpellchecking);
+  window.franzSettings = data;
+});
+
+ipcRenderer.on('service-settings-update', (e, data) => {
+  debug('Service settings update received', data);
+
+  if (data.isDarkModeEnabled && !isDarkModeStyleInjected()) {
+    injectDarkModeStyle(serviceData.recipe.path);
+
+    debug('Enable service dark mode');
+  } else if (!data.isDarkModeEnabled && isDarkModeStyleInjected()) {
+    removeDarkModeStyle();
+
+    debug('Disable service dark mode');
+  }
 });
 
-// initSpellche
+// initSpellchecker
 
 document.addEventListener('DOMContentLoaded', () => {
   ipcRenderer.sendToHost('hello');