[MM-36456] Add support for Gnome's do-not-disturb (#2278)

* Add support for gnome do-not-disturb mode

* Add tests

* Invert condition

.vscode/settings.json

@@ -20,6 +20,7 @@
         "filechooser",
         "flac",
         "FOCALBOARD",
+        "gsettings",
         "ICONNAME",
         "loadscreen",
         "mmjstool",

src/main/notifications/dnd-linux.ts

@@ -0,0 +1,23 @@
+// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {execSync} from 'child_process';
+
+import log from 'electron-log';
+
+const GNOME_READ_DND = 'gsettings get org.gnome.desktop.notifications show-banners';
+
+function getLinuxDoNotDisturb() {
+    try {
+        const showNotifications = execSync(GNOME_READ_DND).toString().replace('\n', '');
+        log.debug('getLinuxDoNotDisturb', {showNotifications});
+
+        return showNotifications !== 'true';
+    } catch (error) {
+        log.error('getLinuxDoNotDisturb Error:', {error});
+
+        return false;
+    }
+}
+
+export default getLinuxDoNotDisturb;

src/main/notifications/index.test.js

@@ -2,6 +2,7 @@
 // See LICENSE.txt for license information.
 
 'use strict';
+import cp from 'child_process';
 
 import {Notification, shell} from 'electron';
 
@@ -15,10 +16,16 @@ import {localizeMessage} from 'main/i18nManager';
 
 import WindowManager from '../windows/windowManager';
 
+import getLinuxDoNotDisturb from './dnd-linux';
+
 import {displayMention, displayDownloadCompleted, currentNotifications} from './index';
 
 const mentions = [];
 
+jest.mock('child_process', () => ({
+    execSync: jest.fn(),
+}));
+
 jest.mock('electron', () => {
     class NotificationMock {
         static isSupported = jest.fn();
@@ -231,4 +238,23 @@ describe('main/notifications', () => {
             expect(shell.showItemInFolder).toHaveBeenCalledWith('/path/to/file');
         });
     });
+
+    describe('getLinuxDoNotDisturb', () => {
+        it('should return false', () => {
+            cp.execSync.mockReturnValue('true');
+            expect(getLinuxDoNotDisturb()).toBe(false);
+        });
+
+        it('should return false if error is thrown', () => {
+            cp.execSync.mockImplementation(() => {
+                throw Error('error');
+            });
+            expect(getLinuxDoNotDisturb()).toBe(false);
+        });
+
+        it('should return true', () => {
+            cp.execSync.mockReturnValue('false');
+            expect(getLinuxDoNotDisturb()).toBe(true);
+        });
+    });
 });

src/main/notifications/index.ts

@@ -17,6 +17,7 @@ import WindowManager from '../windows/windowManager';
 import {Mention} from './Mention';
 import {DownloadNotification} from './Download';
 import {NewVersionNotification, UpgradeNotification} from './Upgrade';
+import getLinuxDoNotDisturb from './dnd-linux';
 
 export const currentNotifications = new Map();
 
@@ -152,5 +153,9 @@ function getDoNotDisturb() {
         return getDarwinDoNotDisturb();
     }
 
+    if (process.platform === 'linux') {
+        return getLinuxDoNotDisturb();
+    }
+
     return false;
 }