fix: updated frontend-build to resolve word-wrap ReDoS vulnerability (#368)

* feat: integrated notifications tray with backend apis

* test: updates test cases

* refactor: loader added and resolves minor nits

* test: fixes test cases related to pagination

* refactor: moved pagination to normalised data

.env.development

@@ -1,15 +1,22 @@
 ACCESS_TOKEN_COOKIE_NAME=edx-jwt-cookie-header-payload
+ACCOUNT_PROFILE_URL=http://localhost:1995
+ACCOUNT_SETTINGS_URL=http://localhost:1997
 BASE_URL=localhost:8080
 CREDENTIALS_BASE_URL=http://localhost:18150
 CSRF_TOKEN_API_PATH=/csrf/api/v1/token
 ECOMMERCE_BASE_URL=http://localhost:18130
 LANGUAGE_PREFERENCE_COOKIE_NAME=openedx-language-preference
 LMS_BASE_URL=http://localhost:18000
+STUDIO_BASE_URL=http://localhost:18010
 LOGIN_URL=http://localhost:18000/login
-LOGOUT_URL=http://localhost:18000/login
+LOGOUT_URL=http://localhost:18000/logout
 MARKETING_SITE_BASE_URL=http://localhost:18000
 ORDER_HISTORY_URL=localhost:1996/orders
 REFRESH_ACCESS_TOKEN_ENDPOINT=http://localhost:18000/login_refresh
 SEGMENT_KEY=null
 SITE_NAME=Open edX
 USER_INFO_COOKIE_NAME=edx-user-info
+LOGO_URL=https://edx-cdn.org/v3/default/logo.svg
+LOGO_TRADEMARK_URL=https://edx-cdn.org/v3/default/logo-trademark.svg
+LOGO_WHITE_URL=https://edx-cdn.org/v3/default/logo-white.svg
+FAVICON_URL=https://edx-cdn.org/v3/default/favicon.ico

.eslintrc.js

@@ -1,3 +1,4 @@
+// eslint-disable-next-line import/no-extraneous-dependencies
 const { createConfig } = require('@edx/frontend-build');
 
-module.exports = createConfig('eslint');
+module.exports = createConfig('eslint');

.github/workflows/add-depr-ticket-to-depr-board.yml

@@ -0,0 +1,19 @@
+# Run the workflow that adds new tickets that are either:
+# - labelled "DEPR"
+# - title starts with "[DEPR]"
+# - body starts with "Proposal Date" (this is the first template field)
+# to the org-wide DEPR project board
+
+name: Add newly created DEPR issues to the DEPR project board
+
+on:
+  issues:
+    types: [opened]
+
+jobs:
+  routeissue:
+    uses: openedx/.github/.github/workflows/add-depr-ticket-to-depr-board.yml@master
+    secrets:
+      GITHUB_APP_ID: ${{ secrets.GRAPHQL_AUTH_APP_ID }}
+      GITHUB_APP_PRIVATE_KEY: ${{ secrets.GRAPHQL_AUTH_APP_PEM }}
+      SLACK_BOT_TOKEN: ${{ secrets.SLACK_ISSUE_BOT_TOKEN }}

.github/workflows/add-remove-label-on-comment.yml

@@ -0,0 +1,20 @@
+# This workflow runs when a comment is made on the ticket
+# If the comment starts with "label: " it tries to apply
+# the label indicated in rest of comment.
+# If the comment starts with "remove label: ", it tries
+# to remove the indicated label.
+# Note: Labels are allowed to have spaces and this script does
+# not parse spaces (as often a space is legitimate), so the command
+# "label: really long lots of words label" will apply the
+# label "really long lots of words label"
+
+name: Allows for the adding and removing of labels via comment
+
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  add_remove_labels:
+    uses: openedx/.github/.github/workflows/add-remove-label-on-comment.yml@master
+

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: Default CI
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+    branches:
+    - '**'
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+    - name: Setup Nodejs Env
+      run: echo "NODE_VER=`cat .nvmrc`" >> $GITHUB_ENV
+    - name: Setup Nodejs
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ env.NODE_VER }}
+    - name: Install dependencies
+      run: npm ci
+    - name: Validate package-lock.json changes
+      run: make validate-no-uncommitted-package-lock-changes
+    - name: Lint
+      run: npm run lint
+    - name: Test
+      run: npm run test
+    - name: Build
+      run: npm run build
+    - name: i18n_extract
+      run: npm run i18n_extract
+    - name: Coverage
+      uses: codecov/codecov-action@v3

.github/workflows/commitlint.yml

@@ -0,0 +1,10 @@
+# Run commitlint on the commit messages in a pull request.
+
+name: Lint Commit Messages
+
+on:
+  - pull_request
+
+jobs:
+  commitlint:
+    uses: openedx/.github/.github/workflows/commitlint.yml@master

.github/workflows/lockfileversion-check.yml

@@ -0,0 +1,13 @@
+#check package-lock file version
+
+name: lockfileVersion check
+
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+
+jobs:
+  version-check:
+    uses: openedx/.github/.github/workflows/lockfileversion-check-v3.yml@master

.github/workflows/release.yml

@@ -0,0 +1,41 @@
+name: Release CI
+on:
+  push:
+    branches:
+    - master
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+    - name: Setup Nodejs Env
+      run: echo "NODE_VER=`cat .nvmrc`" >> $GITHUB_ENV
+    - name: Setup Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ env.NODE_VER }}
+    - name: Install dependencies
+      run: npm ci
+    - name: Validate package-lock.json changes
+      run: make validate-no-uncommitted-package-lock-changes
+    - name: Lint
+      run: npm run lint
+    - name: Test
+      run: npm run test
+    - name: i18n_extract
+      run: npm run i18n_extract
+    - name: Coverage
+      uses: codecov/codecov-action@v3
+    - name: Build
+      run: npm run build
+    - name: Release
+      uses: cycjimmy/semantic-release-action@v3
+      with:
+        semantic_version: 16
+      env:
+        GITHUB_TOKEN: ${{ secrets.SEMANTIC_RELEASE_GITHUB_TOKEN }}
+        NPM_TOKEN: ${{ secrets.SEMANTIC_RELEASE_NPM_TOKEN }}

.github/workflows/self-assign-issue.yml

@@ -0,0 +1,12 @@
+# This workflow runs when a comment is made on the ticket
+# If the comment starts with "assign me" it assigns the author to the
+# ticket (case insensitive)
+
+name: Assign comment author to ticket if they say "assign me"
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  self_assign_by_comment:
+    uses: openedx/.github/.github/workflows/self-assign-issue.yml@master

.gitignore

@@ -5,3 +5,7 @@ dist
 node_modules
 temp
 src/i18n/transifex_input.json
+module.config.js
+.idea/
+
+.vscode

.nvmrc

@@ -0,0 +1 @@
+18

.travis.yml

@@ -1,17 +0,0 @@
-language: node_js
-node_js: 12
-install:
-- npm install
-script:
-- npm run lint
-- npm run test
-- npm run build
-after_success:
-- npx semantic-release
-- codecov
-env:
-  global:
-  # GH_TOKEN
-  - secure: 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
-  # NPM_TOKEN
-  - secure: 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

.tx/config

@@ -1,8 +1,9 @@
 [main]
 host = https://www.transifex.com
 
-[edx-platform.frontend-component-header]
+[o:open-edx:p:edx-platform:r:frontend-component-header]
 file_filter = src/i18n/messages/<lang>.json
 source_file = src/i18n/transifex_input.json
 source_lang = en
-type = KEYVALUEJSON
+type        = KEYVALUEJSON
+

Makefile

@@ -1,11 +1,9 @@
-transifex_resource = frontend-component-header
-transifex_langs = "ar,fr,es_419,zh_CN"
+export TRANSIFEX_RESOURCE = frontend-component-header
+transifex_langs = "ar,fr,es_419,zh_CN,pt,it,de,uk,ru,hi,fr_CA"
 
 transifex_utils = ./node_modules/.bin/transifex-utils.js
 i18n = ./src/i18n
 transifex_input = $(i18n)/transifex_input.json
-tx_url1 = https://www.transifex.com/api/2/project/edx-platform/resource/$(transifex_resource)/translation/en/strings/
-tx_url2 = https://www.transifex.com/api/2/project/edx-platform/resource/$(transifex_resource)/source/
 
 # This directory must match .babelrc .
 transifex_temp = ./temp/babel-plugin-react-intl
@@ -42,15 +40,15 @@ push_translations:
 	# Pushing strings to Transifex...
 	tx push -s
 	# Fetching hashes from Transifex...
-	./node_modules/reactifex/bash_scripts/get_hashed_strings.sh $(tx_url1)
+	./node_modules/@edx/reactifex/bash_scripts/get_hashed_strings_v3.sh
 	# Writing out comments to file...
-	$(transifex_utils) $(transifex_temp) --comments
+	$(transifex_utils) $(transifex_temp) --comments --v3-scripts-path
 	# Pushing comments to Transifex...
-	./node_modules/reactifex/bash_scripts/put_comments.sh $(tx_url2)
+	./node_modules/@edx/reactifex/bash_scripts/put_comments_v3.sh
 
 # Pulls translations from Transifex.
 pull_translations:
-	tx pull -f --mode reviewed --language=$(transifex_langs)
+	tx pull -t -f --mode reviewed --languages=$(transifex_langs)
 
 # This target is used by Travis.
 validate-no-uncommitted-package-lock-changes:

README.rst

@@ -1,11 +1,79 @@
+#########################
 frontend-component-header
-=========================
+#########################
 
 |Build Status| |Codecov| |npm_version| |npm_downloads| |license| |semantic-release|
 
-This is the standard Open edX header for use in React applications. It has two exports:
-  - **default**: The Header Component
-  - **messages**: for i18n in the form of ``{ locale: { key: translatedString } }``
+********
+Overview
+********
+
+A generic header for Open edX micro-frontend applications.
+
+************
+Requirements
+************
+
+This component uses ``@edx/frontend-platform`` services such as i18n, analytics, configuration, and the ``AppContext`` React component, and expects that it has been loaded into a micro-frontend that has been properly initialized via ``@edx/frontend-platform``'s ``initialize`` function. `Please visit the frontend template application to see an example. <https://github.com/openedx/frontend-template-application/blob/master/src/index.jsx>`_
+
+Environment Variables
+=====================
+
+* ``LMS_BASE_URL`` - The URL of the LMS of your Open edX instance.
+* ``LOGOUT_URL`` - The URL of the API endpoint which performs a user logout.
+* ``LOGIN_URL`` - The URL of the login page where a user can sign into their account.
+* ``SITE_NAME`` - The user-facing name of the site, used as `alt` text on the logo in the header.
+  Defaults to "localhost" in development.
+* ``LOGO_URL`` - The URL of the site's logo.  This logo is displayed in the header.
+* ``ORDER_HISTORY_URL`` - The URL of the order history page.
+* ``ACCOUNT_PROFILE_URL`` - The URL of the account profile page.
+* ``ACCOUNT_SETTINGS_URL`` - The URL of the account settings page.
+* ``AUTHN_MINIMAL_HEADER`` - A boolean flag which hides the main menu, user menu, and logged-out
+  menu items when truthy.  This is intended to be used in micro-frontends like
+  frontend-app-authentication in which these menus are considered distractions from the user's task.
+
+************
+Installation
+************
+
+To install this header into your Open edX micro-frontend, run the following command in your MFE:
+
+``npm i --save @edx/frontend-component-header``
+
+This will make the component available to be imported into your application.
+
+*****
+Usage
+*****
+
+This library has the following exports:
+
+* ``(default)``: The header as a React component.
+* ``messages``: Internationalization messages suitable for use with `@edx/frontend-platform/i18n <https://edx.github.io/frontend-platform/module-Internationalization.html>`_
+* ``dist/index.scss``: A SASS file which contains style information for the component.  It should be imported into the micro-frontend's own SCSS file.
+
+Examples
+========
+
+* `An example of component and messages usage. <https://github.com/openedx/frontend-template-application/blob/3355bb3a96232390e9056f35b06ffa8f105ed7ca/src/index.jsx#L21>`_
+* `An example of SCSS file usage. <https://github.com/openedx/frontend-template-application/blob/3cd5485bf387b8c479baf6b02bf59e3061dc3465/src/index.scss#L8>`_
+
+
+***********
+Development
+***********
+
+Install dependencies::
+
+  npm ci
+
+Start the development server::
+
+  npm start
+
+Build a production distribution::
+
+  npm run build
 
 .. |Build Status| image:: https://api.travis-ci.com/edx/frontend-component-header.svg?branch=master
    :target: https://travis-ci.com/edx/frontend-component-header

commitlint.config.js

@@ -1,3 +0,0 @@
-module.exports = {
-  extends: ['@commitlint/config-angular'],
-};

example/index.js

@@ -4,8 +4,10 @@ import React from 'react';
 import ReactDOM from 'react-dom';
 import { initialize, getConfig, subscribe, APP_READY } from '@edx/frontend-platform';
 import { AppContext, AppProvider } from '@edx/frontend-platform/react';
+// import Header from '@edx/frontend-component-header';
+import { LearningHeader as Header } from '@edx/frontend-component-header';
+
 import './index.scss';
-import Header from '../src/';
 
 subscribe(APP_READY, () => {
   ReactDOM.render(

example/index.scss

@@ -1,2 +1,6 @@
-@import "~@edx/paragon/scss/core/core.scss";
-@import '../src/index.scss';
+@import "@edx/brand/paragon/fonts";
+@import "@edx/brand/paragon/variables";
+@import "@edx/paragon/scss/core/core";
+@import "@edx/brand/paragon/overrides";
+
+@import "@edx/frontend-component-header/index";

jest.config.js

@@ -1,7 +1,7 @@
 const { createConfig } = require('@edx/frontend-build');
 
 module.exports = createConfig('jest', {
-  setupFiles: [
+  setupFilesAfterEnv: [
     '<rootDir>/src/setupTest.js',
   ],
 });

package.json

@@ -19,52 +19,65 @@
   ],
   "husky": {
     "hooks": {
-      "pre-commit": "npm run lint",
-      "commit-msg": "commitlint -e $GIT_PARAMS"
+      "pre-commit": "npm run lint"
     }
   },
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/edx/frontend-component-header.git"
+    "url": "git+https://github.com/openedx/frontend-component-header.git"
   },
   "author": "edX",
   "license": "AGPL-3.0",
   "bugs": {
-    "url": "https://github.com/edx/frontend-component-header/issues"
+    "url": "https://github.com/openedx/frontend-component-header/issues"
   },
-  "homepage": "https://github.com/edx/frontend-component-header#readme",
+  "homepage": "https://github.com/openedx/frontend-component-header#readme",
   "devDependencies": {
-    "@commitlint/cli": "8.2.0",
-    "@commitlint/config-angular": "8.2.0",
-    "@commitlint/prompt": "8.2.0",
-    "@commitlint/prompt-cli": "8.2.0",
-    "@edx/frontend-build": "2.0.3",
-    "@edx/frontend-platform": "1.1.4",
-    "@edx/paragon": "7.1.4",
-    "codecov": "3.6.1",
-    "enzyme": "3.10.0",
-    "enzyme-adapter-react-16": "1.14.0",
-    "husky": "3.0.8",
-    "prop-types": "15.7.2",
-    "react": "16.9.0",
-    "react-dom": "16.9.0",
-    "react-redux": "^7.1.1",
-    "react-router-dom": "^5.1.2",
-    "react-test-renderer": "16.9.0",
-    "reactifex": "1.1.1",
-    "redux": "^4.0.4",
-    "redux-saga": "^1.1.1"
+    "@edx/brand": "npm:@edx/brand-openedx@1.2.0",
+    "@edx/browserslist-config": "^1.1.1",
+    "@edx/frontend-build": "12.8.61",
+    "@edx/frontend-platform": "4.6.0",
+    "@edx/reactifex": "^2.1.1",
+    "@testing-library/dom": "9.3.1",
+    "@testing-library/jest-dom": "5.16.5",
+    "@testing-library/react": "10.4.9",
+    "@wojtekmaj/enzyme-adapter-react-17": "0.8.0",
+    "enzyme": "3.11.0",
+    "husky": "8.0.3",
+    "jest": "29.6.1",
+    "jest-chain": "1.1.6",
+    "prop-types": "15.8.1",
+    "react": "17.0.2",
+    "react-dom": "17.0.2",
+    "react-redux": "7.2.9",
+    "react-router-dom": "5.3.4",
+    "react-test-renderer": "17.0.2",
+    "redux": "4.2.1",
+    "redux-saga": "1.2.3"
   },
   "dependencies": {
+    "@edx/paragon": "20.45.0",
+    "@fortawesome/fontawesome-svg-core": "6.4.0",
+    "@fortawesome/free-brands-svg-icons": "6.4.0",
+    "@fortawesome/free-regular-svg-icons": "6.4.0",
+    "@fortawesome/free-solid-svg-icons": "6.4.0",
+    "@fortawesome/react-fontawesome": "^0.2.0",
+    "@reduxjs/toolkit": "1.9.5",
+    "axios-mock-adapter": "1.21.5",
     "babel-polyfill": "6.26.0",
-    "react-responsive": "8.0.1",
-    "react-transition-group": "4.3.0"
+    "classnames": "2.3.2",
+    "lodash": "4.17.21",
+    "react-redux": "7.2.9",
+    "react-responsive": "8.2.0",
+    "react-router-dom": "5.3.4",
+    "react-transition-group": "4.4.5",
+    "rosie": "2.1.0",
+    "timeago.js": "4.0.2"
   },
   "peerDependencies": {
-    "@edx/frontend-platform": "^1.1.4",
-    "@edx/paragon": "^7.0.0",
+    "@edx/frontend-platform": "^4.0.0",
     "prop-types": "^15.5.10",
-    "react": "^16.9.0",
-    "react-dom": "^16.9.0"
+    "react": "^16.9.0 || ^17.0.0",
+    "react-dom": "^16.9.0 || ^17.0.0"
   }
 }

renovate.json

@@ -1,5 +1,33 @@
 {
   "extends": [
-    "config:base"
-  ]
+    "config:base",
+    "schedule:weekly",
+    ":automergeLinters",
+    ":automergeMinor",
+    ":automergeTesters",
+    ":enableVulnerabilityAlerts",
+    ":rebaseStalePrs",
+    ":semanticCommits",
+    ":updateNotScheduled"
+  ],
+  "packageRules": [
+    {
+      "matchDepTypes": [
+        "devDependencies"
+      ],
+      "matchUpdateTypes": [
+        "lockFileMaintenance",
+        "minor",
+        "patch",
+        "pin"
+      ],
+      "automerge": true
+    },
+    {
+      "matchPackagePatterns": ["@edx"],
+      "matchUpdateTypes": ["minor", "patch"],
+      "automerge": true
+    }
+  ],
+  "timezone": "America/New_York"
 }

src/Avatar.jsx

@@ -3,16 +3,16 @@ import PropTypes from 'prop-types';
 
 import { AvatarIcon } from './Icons';
 
-function Avatar({
+const Avatar = ({
   size,
   src,
   alt,
   className,
-}) {
+}) => {
   const avatar = src ? (
     <img className="d-block w-100 h-100" src={src} alt={alt} />
   ) : (
-    <AvatarIcon className="text-muted" style={{ width: size, height: size }} role="img" aria-hidden focusable="false" />
+    <AvatarIcon style={{ width: size, height: size }} role="img" aria-hidden focusable="false" />
   );
 
   return (
@@ -23,7 +23,7 @@ function Avatar({
       {avatar}
     </span>
   );
-}
+};
 
 Avatar.propTypes = {
   src: PropTypes.string,

src/DesktopHeader.jsx

@@ -1,6 +1,7 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
+import { getConfig } from '@edx/frontend-platform';
 
 // Local Components
 import { Menu, MenuTrigger, MenuContent } from './Menu';
@@ -22,7 +23,9 @@ class DesktopHeader extends React.Component {
     const { mainMenu } = this.props;
 
     // Nodes are accepted as a prop
-    if (!Array.isArray(mainMenu)) return mainMenu;
+    if (!Array.isArray(mainMenu)) {
+      return mainMenu;
+    }
 
     return mainMenu.map((menuItem) => {
       const {
@@ -51,6 +54,24 @@ class DesktopHeader extends React.Component {
     });
   }
 
+  // Renders an optional App Menu for
+  renderAppMenu() {
+    const { appMenu } = this.props;
+    const { content: appMenuContent, menuItems } = appMenu;
+    return (
+      <Menu transitionClassName="menu-dropdown" transitionTimeout={250}>
+        <MenuTrigger tag="a" className="nav-link d-inline-flex align-items-center">
+          {appMenuContent} <CaretIcon role="img" aria-hidden focusable="false" />
+        </MenuTrigger>
+        <MenuContent className="mb-0 dropdown-menu show dropdown-menu-right pin-right shadow py-2">
+          {menuItems.map(({ type, href, content }) => (
+            <a className={`dropdown-${type}`} key={`${type}-${content}`} href={href}>{content}</a>
+          ))}
+        </MenuContent>
+      </Menu>
+    );
+  }
+
   renderUserMenu() {
     const {
       userMenu,
@@ -64,7 +85,7 @@ class DesktopHeader extends React.Component {
         <MenuTrigger
           tag="button"
           aria-label={intl.formatMessage(messages['header.label.account.menu.for'], { username })}
-          className="btn btn-light d-inline-flex align-items-center pl-2 pr-3"
+          className="btn btn-outline-primary d-inline-flex align-items-center pl-2 pr-3"
         >
           <Avatar size="1.5em" src={avatar} alt="" className="mr-2" />
           {username} <CaretIcon role="img" aria-hidden focusable="false" />
@@ -99,20 +120,31 @@ class DesktopHeader extends React.Component {
       logoDestination,
       loggedIn,
       intl,
+      appMenu,
     } = this.props;
     const logoProps = { src: logo, alt: logoAltText, href: logoDestination };
+    const logoClasses = getConfig().AUTHN_MINIMAL_HEADER ? 'mw-100' : null;
 
     return (
       <header className="site-header-desktop">
-        <div className="container-fluid">
+        <a className="nav-skip sr-only sr-only-focusable" href="#main">{intl.formatMessage(messages['header.label.skip.nav'])}</a>
+        <div className={`container-fluid ${logoClasses}`}>
           <div className="nav-container position-relative d-flex align-items-center">
-            { logoDestination === null ? <Logo className="logo" src={logo} alt={logoAltText} /> : <LinkedLogo className="logo" {...logoProps} />}
+            {logoDestination === null ? <Logo className="logo" src={logo} alt={logoAltText} /> : <LinkedLogo className="logo" {...logoProps} />}
             <nav
               aria-label={intl.formatMessage(messages['header.label.main.nav'])}
               className="nav main-nav"
             >
               {this.renderMainMenu()}
             </nav>
+            {appMenu ? (
+              <nav
+                aria-label={intl.formatMessage(messages['header.label.app.nav'])}
+                className="nav app-nav"
+              >
+                {this.renderAppMenu()}
+              </nav>
+            ) : null}
             <nav
               aria-label={intl.formatMessage(messages['header.label.secondary.nav'])}
               className="nav secondary-menu-container align-items-center ml-auto"
@@ -150,6 +182,20 @@ DesktopHeader.propTypes = {
 
   // i18n
   intl: intlShape.isRequired,
+
+  // appMenu
+  appMenu: PropTypes.shape(
+    {
+      content: PropTypes.string,
+      menuItems: PropTypes.arrayOf(
+        PropTypes.shape({
+          type: PropTypes.string,
+          href: PropTypes.string,
+          content: PropTypes.string,
+        }),
+      ),
+    },
+  ),
 };
 
 DesktopHeader.defaultProps = {
@@ -162,6 +208,7 @@ DesktopHeader.defaultProps = {
   avatar: null,
   username: null,
   loggedIn: false,
+  appMenu: null,
 };
 
 export default injectIntl(DesktopHeader);

src/Header.jsx

@@ -2,13 +2,17 @@ import React, { useContext } from 'react';
 import Responsive from 'react-responsive';
 import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
 import { AppContext } from '@edx/frontend-platform/react';
-import { ensureConfig } from '@edx/frontend-platform/config';
+import {
+  APP_CONFIG_INITIALIZED,
+  ensureConfig,
+  mergeConfig,
+  getConfig,
+  subscribe,
+} from '@edx/frontend-platform';
 
 import DesktopHeader from './DesktopHeader';
 import MobileHeader from './MobileHeader';
 
-import LogoSVG from './logo.svg';
-
 import messages from './Header.messages';
 
 ensureConfig([
@@ -16,9 +20,17 @@ ensureConfig([
   'LOGOUT_URL',
   'LOGIN_URL',
   'SITE_NAME',
+  'LOGO_URL',
+  'ORDER_HISTORY_URL',
 ], 'Header component');
 
-function Header({ intl }) {
+subscribe(APP_CONFIG_INITIALIZED, () => {
+  mergeConfig({
+    AUTHN_MINIMAL_HEADER: !!process.env.AUTHN_MINIMAL_HEADER,
+  }, 'Header additional config');
+});
+
+const Header = ({ intl }) => {
   const { authenticatedUser, config } = useContext(AppContext);
 
   const mainMenu = [
@@ -29,6 +41,12 @@ function Header({ intl }) {
     },
   ];
 
+  const orderHistoryItem = {
+    type: 'item',
+    href: config.ORDER_HISTORY_URL,
+    content: intl.formatMessage(messages['header.user.menu.order.history']),
+  };
+
   const userMenu = authenticatedUser === null ? [] : [
     {
       type: 'item',
@@ -37,12 +55,12 @@ function Header({ intl }) {
     },
     {
       type: 'item',
-      href: `${config.LMS_BASE_URL}/u/${authenticatedUser.username}`,
+      href: `${config.ACCOUNT_PROFILE_URL}/u/${authenticatedUser.username}`,
       content: intl.formatMessage(messages['header.user.menu.profile']),
     },
     {
       type: 'item',
-      href: `${config.LMS_BASE_URL}/account/settings`,
+      href: config.ACCOUNT_SETTINGS_URL,
       content: intl.formatMessage(messages['header.user.menu.account.settings']),
     },
     {
@@ -52,6 +70,11 @@ function Header({ intl }) {
     },
   ];
 
+  // Users should only see Order History if have a ORDER_HISTORY_URL define in the environment.
+  if (config.ORDER_HISTORY_URL) {
+    userMenu.splice(-1, 0, orderHistoryItem);
+  }
+
   const loggedOutItems = [
     {
       type: 'item',
@@ -66,29 +89,28 @@ function Header({ intl }) {
   ];
 
   const props = {
-    logo: LogoSVG,
+    logo: config.LOGO_URL,
     logoAltText: config.SITE_NAME,
-    siteName: config.SITE_NAME,
     logoDestination: `${config.LMS_BASE_URL}/dashboard`,
     loggedIn: authenticatedUser !== null,
     username: authenticatedUser !== null ? authenticatedUser.username : null,
     avatar: authenticatedUser !== null ? authenticatedUser.avatar : null,
-    mainMenu,
-    userMenu,
-    loggedOutItems,
+    mainMenu: getConfig().AUTHN_MINIMAL_HEADER ? [] : mainMenu,
+    userMenu: getConfig().AUTHN_MINIMAL_HEADER ? [] : userMenu,
+    loggedOutItems: getConfig().AUTHN_MINIMAL_HEADER ? [] : loggedOutItems,
   };
 
   return (
-    <React.Fragment>
+    <>
       <Responsive maxWidth={768}>
         <MobileHeader {...props} />
       </Responsive>
       <Responsive minWidth={769}>
         <DesktopHeader {...props} />
       </Responsive>
-    </React.Fragment>
+    </>
   );
-}
+};
 
 Header.propTypes = {
   intl: intlShape.isRequired,

src/Header.messages.jsx

@@ -56,6 +56,16 @@ const messages = defineMessages({
     defaultMessage: 'Sign Up',
     description: 'Link to registration',
   },
+  'header.user.menu.studio.home': {
+    id: 'header.user.menu.studio.home',
+    defaultMessage: 'Studio Home',
+    description: 'Link to the Studio Home',
+  },
+  'header.user.menu.studio.maintenance': {
+    id: 'header.user.menu.studio.maintenance',
+    defaultMessage: 'Maintenance',
+    description: 'Link to the Studio Maintenance',
+  },
   'header.label.account.nav': {
     id: 'header.label.account.nav',
     defaultMessage: 'Account',
@@ -67,7 +77,7 @@ const messages = defineMessages({
     description: 'The aria label for the account menu trigger',
   },
   'header.label.account.menu.for': {
-    id: 'header.label.account.menu',
+    id: 'header.label.account.menu.for',
     defaultMessage: 'Account menu for {username}',
     description: 'The aria label for the account menu trigger when the username is displayed in it',
   },
@@ -91,6 +101,16 @@ const messages = defineMessages({
     defaultMessage: 'Secondary',
     description: 'The aria label for the seconary nav',
   },
+  'header.label.skip.nav': {
+    id: 'header.label.skip.nav',
+    defaultMessage: 'Skip to main content',
+    description: 'A link used by screen readers to allow users to skip to the main content of the page.',
+  },
+  'header.label.app.nav': {
+    id: 'header.label.app.nav',
+    defaultMessage: 'App',
+    description: 'The aria label for the app Nav',
+  },
 });
 
 export default messages;

src/Header.test.jsx

@@ -1,31 +1,51 @@
+/* eslint-disable react/prop-types */
 import React from 'react';
 import { IntlProvider } from '@edx/frontend-platform/i18n';
 import TestRenderer from 'react-test-renderer';
-import { AppContext } from '@edx/frontend-platform/react';
+import { AppContext, AppProvider } from '@edx/frontend-platform/react';
 import { Context as ResponsiveContext } from 'react-responsive';
+import { initializeMockApp } from '@edx/frontend-platform';
+import store from './store';
 
 import Header from './index';
 
+const HeaderComponent = ({ width, contextValue }) => (
+  <ResponsiveContext.Provider value={width}>
+    <IntlProvider locale="en" messages={{}}>
+      <AppProvider store={store}>
+        <AppContext.Provider
+          value={contextValue}
+        >
+          <Header />
+        </AppContext.Provider>
+      </AppProvider>
+    </IntlProvider>
+  </ResponsiveContext.Provider>
+);
+
 describe('<Header />', () => {
+  beforeEach(async () => {
+    initializeMockApp({
+      authenticatedUser: {
+        userId: '123abc',
+        username: 'testuser',
+        administrator: false,
+        roles: [],
+      },
+    });
+  });
   it('renders correctly for anonymous desktop', () => {
-    const component = (
-      <ResponsiveContext.Provider value={{ width: 1280 }}>
-        <IntlProvider locale="en" messages={{}}>
-          <AppContext.Provider value={{
-            authenticatedUser: null,
-            config: {
-              LMS_BASE_URL: process.env.LMS_BASE_URL,
-              SITE_NAME: process.env.SITE_NAME,
-              LOGIN_URL: process.env.LOGIN_URL,
-              LOGOUT_URL: process.env.LOGOUT_URL,
-            },
-            }}
-          >
-            <Header />
-          </AppContext.Provider>
-        </IntlProvider>
-      </ResponsiveContext.Provider>
-    );
+    const contextValue = {
+      authenticatedUser: null,
+      config: {
+        LMS_BASE_URL: process.env.LMS_BASE_URL,
+        SITE_NAME: process.env.SITE_NAME,
+        LOGIN_URL: process.env.LOGIN_URL,
+        LOGOUT_URL: process.env.LOGOUT_URL,
+        LOGO_URL: process.env.LOGO_URL,
+      },
+    };
+    const component = <HeaderComponent width={{ width: 1280 }} contextValue={contextValue} />;
 
     const wrapper = TestRenderer.create(component);
 
@@ -33,29 +53,22 @@ describe('<Header />', () => {
   });
 
   it('renders correctly for authenticated desktop', () => {
-    const component = (
-      <ResponsiveContext.Provider value={{ width: 1280 }}>
-        <IntlProvider locale="en" messages={{}}>
-          <AppContext.Provider value={{
-            authenticatedUser: {
-              userId: 'abc123',
-              username: 'edX',
-              roles: [],
-              administrator: false,
-            },
-            config: {
-              LMS_BASE_URL: process.env.LMS_BASE_URL,
-              SITE_NAME: process.env.SITE_NAME,
-              LOGIN_URL: process.env.LOGIN_URL,
-              LOGOUT_URL: process.env.LOGOUT_URL,
-            },
-            }}
-          >
-            <Header />
-          </AppContext.Provider>
-        </IntlProvider>
-      </ResponsiveContext.Provider>
-    );
+    const contextValue = {
+      authenticatedUser: {
+        userId: 'abc123',
+        username: 'edX',
+        roles: [],
+        administrator: false,
+      },
+      config: {
+        LMS_BASE_URL: process.env.LMS_BASE_URL,
+        SITE_NAME: process.env.SITE_NAME,
+        LOGIN_URL: process.env.LOGIN_URL,
+        LOGOUT_URL: process.env.LOGOUT_URL,
+        LOGO_URL: process.env.LOGO_URL,
+      },
+    };
+    const component = <HeaderComponent width={{ width: 1280 }} contextValue={contextValue} />;
 
     const wrapper = TestRenderer.create(component);
 
@@ -63,24 +76,17 @@ describe('<Header />', () => {
   });
 
   it('renders correctly for anonymous mobile', () => {
-    const component = (
-      <ResponsiveContext.Provider value={{ width: 500 }}>
-        <IntlProvider locale="en" messages={{}}>
-          <AppContext.Provider value={{
-            authenticatedUser: null,
-            config: {
-              LMS_BASE_URL: process.env.LMS_BASE_URL,
-              SITE_NAME: process.env.SITE_NAME,
-              LOGIN_URL: process.env.LOGIN_URL,
-              LOGOUT_URL: process.env.LOGOUT_URL,
-            },
-            }}
-          >
-            <Header />
-          </AppContext.Provider>
-        </IntlProvider>
-      </ResponsiveContext.Provider>
-    );
+    const contextValue = {
+      authenticatedUser: null,
+      config: {
+        LMS_BASE_URL: process.env.LMS_BASE_URL,
+        SITE_NAME: process.env.SITE_NAME,
+        LOGIN_URL: process.env.LOGIN_URL,
+        LOGOUT_URL: process.env.LOGOUT_URL,
+        LOGO_URL: process.env.LOGO_URL,
+      },
+    };
+    const component = <HeaderComponent width={{ width: 500 }} contextValue={contextValue} />;
 
     const wrapper = TestRenderer.create(component);
 
@@ -88,29 +94,22 @@ describe('<Header />', () => {
   });
 
   it('renders correctly for authenticated mobile', () => {
-    const component = (
-      <ResponsiveContext.Provider value={{ width: 500 }}>
-        <IntlProvider locale="en" messages={{}}>
-          <AppContext.Provider value={{
-            authenticatedUser: {
-              userId: 'abc123',
-              username: 'edX',
-              roles: [],
-              administrator: false,
-            },
-            config: {
-              LMS_BASE_URL: process.env.LMS_BASE_URL,
-              SITE_NAME: process.env.SITE_NAME,
-              LOGIN_URL: process.env.LOGIN_URL,
-              LOGOUT_URL: process.env.LOGOUT_URL,
-            },
-            }}
-          >
-            <Header />
-          </AppContext.Provider>
-        </IntlProvider>
-      </ResponsiveContext.Provider>
-    );
+    const contextValue = {
+      authenticatedUser: {
+        userId: 'abc123',
+        username: 'edX',
+        roles: [],
+        administrator: false,
+      },
+      config: {
+        LMS_BASE_URL: process.env.LMS_BASE_URL,
+        SITE_NAME: process.env.SITE_NAME,
+        LOGIN_URL: process.env.LOGIN_URL,
+        LOGOUT_URL: process.env.LOGOUT_URL,
+        LOGO_URL: process.env.LOGO_URL,
+      },
+    };
+    const component = <HeaderComponent width={{ width: 500 }} contextValue={contextValue} />;
 
     const wrapper = TestRenderer.create(component);
 

src/Icons.jsx

@@ -1,6 +1,6 @@
 import React from 'react';
 
-export const MenuIcon = props => (
+export const MenuIcon = (props) => (
   <svg
     width="24px"
     height="24px"
@@ -14,7 +14,7 @@ export const MenuIcon = props => (
   </svg>
 );
 
-export const AvatarIcon = props => (
+export const AvatarIcon = (props) => (
   <svg
     width="24px"
     height="24px"
@@ -29,7 +29,7 @@ export const AvatarIcon = props => (
   </svg>
 );
 
-export const CaretIcon = props => (
+export const CaretIcon = (props) => (
   <svg
     width="16px"
     height="16px"

src/Logo.jsx

@@ -1,30 +1,25 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 
-
-function Logo({ src, alt, ...attributes }) {
-  return (
-    <img src={src} alt={alt} {...attributes} />
-  );
-}
+const Logo = ({ src, alt, ...attributes }) => (
+  <img src={src} alt={alt} {...attributes} />
+);
 
 Logo.propTypes = {
   src: PropTypes.string.isRequired,
   alt: PropTypes.string.isRequired,
 };
 
-function LinkedLogo({
+const LinkedLogo = ({
   href,
   src,
   alt,
   ...attributes
-}) {
-  return (
-    <a href={href} {...attributes}>
-      <img className="d-block" src={src} alt={alt} />
-    </a>
-  );
-}
+}) => (
+  <a href={href} {...attributes}>
+    <img className="d-block" src={src} alt={alt} />
+  </a>
+);
 
 LinkedLogo.propTypes = {
   href: PropTypes.string.isRequired,

src/Menu/Menu.jsx

@@ -2,13 +2,10 @@ import React from 'react';
 import { CSSTransition } from 'react-transition-group';
 import PropTypes from 'prop-types';
 
-
-function MenuTrigger({ tag, className, ...attributes }) {
-  return React.createElement(tag, {
-    className: `menu-trigger ${className}`,
-    ...attributes,
-  });
-}
+const MenuTrigger = ({ tag, className, ...attributes }) => React.createElement(tag, {
+  className: `menu-trigger ${className}`,
+  ...attributes,
+});
 MenuTrigger.propTypes = {
   tag: PropTypes.string,
   className: PropTypes.string,
@@ -19,13 +16,10 @@ MenuTrigger.defaultProps = {
 };
 const MenuTriggerType = <MenuTrigger />.type;
 
-
-function MenuContent({ tag, className, ...attributes }) {
-  return React.createElement(tag, {
-    className: ['menu-content', className].join(' '),
-    ...attributes,
-  });
-}
+const MenuContent = ({ tag, className, ...attributes }) => React.createElement(tag, {
+  className: ['menu-content', className].join(' '),
+  ...attributes,
+});
 MenuContent.propTypes = {
   tag: PropTypes.string,
   className: PropTypes.string,
@@ -35,6 +29,17 @@ MenuContent.defaultProps = {
   className: null,
 };
 
+const menuPropTypes = {
+  tag: PropTypes.string,
+  onClose: PropTypes.func,
+  onOpen: PropTypes.func,
+  closeOnDocumentClick: PropTypes.bool,
+  respondToPointerEvents: PropTypes.bool,
+  className: PropTypes.string,
+  transitionTimeout: PropTypes.number,
+  transitionClassName: PropTypes.string,
+  children: PropTypes.arrayOf(PropTypes.node).isRequired,
+};
 
 class Menu extends React.Component {
   constructor(props) {
@@ -66,10 +71,14 @@ class Menu extends React.Component {
 
   // Event handlers
   onDocumentClick(e) {
-    if (!this.props.closeOnDocumentClick) return;
+    if (!this.props.closeOnDocumentClick) {
+      return;
+    }
 
     const clickIsInMenu = this.menu.current === e.target || this.menu.current.contains(e.target);
-    if (clickIsInMenu) return;
+    if (clickIsInMenu) {
+      return;
+    }
 
     this.close();
   }
@@ -77,7 +86,9 @@ class Menu extends React.Component {
   onTriggerClick(e) {
     // Let the browser follow the link of the trigger if the menu
     // is already expanded and the trigger has an href attribute
-    if (this.state.expanded && e.target.getAttribute('href')) return;
+    if (this.state.expanded && e.target.getAttribute('href')) {
+      return;
+    }
 
     e.preventDefault();
     this.toggle();
@@ -89,7 +100,9 @@ class Menu extends React.Component {
   }
 
   onKeyDown(e) {
-    if (!this.state.expanded) return;
+    if (!this.state.expanded) {
+      return;
+    }
     switch (e.key) {
       case 'Escape': {
         e.preventDefault();
@@ -131,16 +144,19 @@ class Menu extends React.Component {
   }
 
   onMouseEnter() {
-    if (!this.props.respondToPointerEvents) return;
+    if (!this.props.respondToPointerEvents) {
+      return;
+    }
     this.open();
   }
 
   onMouseLeave() {
-    if (!this.props.respondToPointerEvents) return;
+    if (!this.props.respondToPointerEvents) {
+      return;
+    }
     this.close();
   }
 
-
   // Internal functions
 
   getFocusableElements() {
@@ -151,7 +167,7 @@ class Menu extends React.Component {
     // Any extra props are attributes for the menu
     const attributes = {};
     Object.keys(this.props)
-      .filter(property => Menu.propTypes[property] === undefined)
+      .filter(property => menuPropTypes[property] === undefined)
       .forEach((property) => {
         attributes[property] = this.props[property];
       });
@@ -173,7 +189,9 @@ class Menu extends React.Component {
   }
 
   open() {
-    if (this.props.onOpen) this.props.onOpen();
+    if (this.props.onOpen) {
+      this.props.onOpen();
+    }
     this.setState({ expanded: true });
     // Listen to touchend and click events to ensure the menu
     // can be closed on mobile, pointer, and mixed input devices
@@ -182,7 +200,9 @@ class Menu extends React.Component {
   }
 
   close() {
-    if (this.props.onClose) this.props.onClose();
+    if (this.props.onClose) {
+      this.props.onClose();
+    }
     this.setState({ expanded: false });
     document.removeEventListener('touchend', this.onDocumentClick, true);
     document.removeEventListener('click', this.onDocumentClick, true);
@@ -240,18 +260,7 @@ class Menu extends React.Component {
   }
 }
 
-
-Menu.propTypes = {
-  tag: PropTypes.string,
-  onClose: PropTypes.func,
-  onOpen: PropTypes.func,
-  closeOnDocumentClick: PropTypes.bool,
-  respondToPointerEvents: PropTypes.bool,
-  className: PropTypes.string,
-  transitionTimeout: PropTypes.number,
-  transitionClassName: PropTypes.string,
-  children: PropTypes.arrayOf(PropTypes.node).isRequired,
-};
+Menu.propTypes = menuPropTypes;
 Menu.defaultProps = {
   tag: 'div',
   className: null,
@@ -263,5 +272,4 @@ Menu.defaultProps = {
   transitionClassName: 'menu-content',
 };
 
-
 export { Menu, MenuTrigger, MenuContent };

src/MobileHeader.jsx

@@ -1,6 +1,7 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
+import { getConfig } from '@edx/frontend-platform';
 
 // Local Components
 import { Menu, MenuTrigger, MenuContent } from './Menu';
@@ -22,7 +23,9 @@ class MobileHeader extends React.Component {
     const { mainMenu } = this.props;
 
     // Nodes are accepted as a prop
-    if (!Array.isArray(mainMenu)) return mainMenu;
+    if (!Array.isArray(mainMenu)) {
+      return mainMenu;
+    }
 
     return mainMenu.map((menuItem) => {
       const {
@@ -89,17 +92,22 @@ class MobileHeader extends React.Component {
       stickyOnMobile,
       intl,
       mainMenu,
+      userMenu,
+      loggedOutItems,
     } = this.props;
     const logoProps = { src: logo, alt: logoAltText, href: logoDestination };
     const stickyClassName = stickyOnMobile ? 'sticky-top' : '';
+    const logoClasses = getConfig().AUTHN_MINIMAL_HEADER ? 'justify-content-left pl-3' : 'justify-content-center';
 
     return (
       <header
         aria-label={intl.formatMessage(messages['header.label.main.header'])}
         className={`site-header-mobile d-flex justify-content-between align-items-center shadow ${stickyClassName}`}
       >
-        <div className="w-100 d-flex justify-content-start">
-          {mainMenu.length > 0 ?
+        <a className="nav-skip sr-only sr-only-focusable" href="#main">{intl.formatMessage(messages['header.label.skip.nav'])}</a>
+        {mainMenu.length > 0 ? (
+          <div className="w-100 d-flex justify-content-start">
+
             <Menu className="position-static">
               <MenuTrigger
                 tag="button"
@@ -116,26 +124,29 @@ class MobileHeader extends React.Component {
               >
                 {this.renderMainMenu()}
               </MenuContent>
-            </Menu> : null }
-        </div>
-        <div className="w-100 d-flex justify-content-center">
+            </Menu>
+          </div>
+        ) : null}
+        <div className={`w-100 d-flex ${logoClasses}`}>
           { logoDestination === null ? <Logo className="logo" src={logo} alt={logoAltText} /> : <LinkedLogo className="logo" {...logoProps} itemType="http://schema.org/Organization" />}
         </div>
-        <div className="w-100 d-flex justify-content-end align-items-center">
-          <Menu tag="nav" aria-label={intl.formatMessage(messages['header.label.secondary.nav'])} className="position-static">
-            <MenuTrigger
-              tag="button"
-              className="icon-button"
-              aria-label={intl.formatMessage(messages['header.label.account.menu'])}
-              title={intl.formatMessage(messages['header.label.account.menu'])}
-            >
-              <Avatar size="1.5rem" src={avatar} alt={username} />
-            </MenuTrigger>
-            <MenuContent tag="ul" className="nav flex-column pin-left pin-right border-top shadow py-2">
-              {loggedIn ? this.renderUserMenuItems() : this.renderLoggedOutItems()}
-            </MenuContent>
-          </Menu>
-        </div>
+        {userMenu.length > 0 || loggedOutItems.length > 0 ? (
+          <div className="w-100 d-flex justify-content-end align-items-center">
+            <Menu tag="nav" aria-label={intl.formatMessage(messages['header.label.secondary.nav'])} className="position-static">
+              <MenuTrigger
+                tag="button"
+                className="icon-button"
+                aria-label={intl.formatMessage(messages['header.label.account.menu'])}
+                title={intl.formatMessage(messages['header.label.account.menu'])}
+              >
+                <Avatar size="1.5rem" src={avatar} alt={username} />
+              </MenuTrigger>
+              <MenuContent tag="ul" className="nav flex-column pin-left pin-right border-top shadow py-2">
+                {loggedIn ? this.renderUserMenuItems() : this.renderLoggedOutItems()}
+              </MenuContent>
+            </Menu>
+          </div>
+        ) : null}
       </header>
     );
   }

src/Notifications/NotificationRowItem.jsx

@@ -0,0 +1,79 @@
+import React, { useCallback } from 'react';
+import { useDispatch } from 'react-redux';
+import { useIntl } from '@edx/frontend-platform/i18n';
+import PropTypes from 'prop-types';
+import { Icon } from '@edx/paragon';
+import { Link } from 'react-router-dom';
+import * as timeago from 'timeago.js';
+import { getIconByType } from './utils';
+import { markNotificationsAsRead } from './data/thunks';
+import messages from './messages';
+import timeLocale from '../common/time-locale';
+
+const NotificationRowItem = ({
+  id, type, contentUrl, content, courseName, createdAt, lastRead,
+}) => {
+  timeago.register('time-locale', timeLocale);
+  const intl = useIntl();
+  const dispatch = useDispatch();
+
+  const handleMarkAsRead = useCallback(() => {
+    dispatch(markNotificationsAsRead(id));
+  }, [dispatch, id]);
+
+  const { icon: iconComponent, class: iconClass } = getIconByType(type);
+
+  return (
+    <Link
+      target="_blank"
+      className="d-flex mb-2 align-items-center text-decoration-none"
+      to={contentUrl}
+      onClick={handleMarkAsRead}
+      data-testid={`notification-${id}`}
+    >
+      <Icon
+        src={iconComponent}
+        className={`${iconClass} mr-4 notification-icon`}
+        data-testid={`notification-icon-${id}`}
+      />
+      <div className="d-flex w-100" data-testid="notification-contents">
+        <div className="d-flex align-items-center w-100">
+          <div className="py-10px w-100 px-0 cursor-pointer">
+            <span
+              className="line-height-24 text-gray-700 mb-2 notification-item-content overflow-hidden content"
+              // eslint-disable-next-line react/no-danger
+              dangerouslySetInnerHTML={{ __html: content }}
+              data-testid={`notification-content-${id}`}
+            />
+            <div className="py-0 d-flex">
+              <span className="font-size-12 text-gray-500 line-height-20">
+                <span data-testid={`notification-course-${id}`}>{courseName}
+                </span>
+                <span className="text-light-700 px-1.5">{intl.formatMessage(messages.fullStop)}</span>
+                <span data-testid={`notification-created-date-${id}`}> {timeago.format(createdAt, 'time-locale')}
+                </span>
+              </span>
+            </div>
+          </div>
+          {!lastRead && (
+            <div className="d-flex py-1.5 px-1.5 ml-2 cursor-pointer">
+              <span className="bg-brand-500 rounded unread" data-testid={`unread-notification-${id}`} />
+            </div>
+          )}
+        </div>
+      </div>
+    </Link>
+  );
+};
+
+NotificationRowItem.propTypes = {
+  id: PropTypes.string.isRequired,
+  type: PropTypes.string.isRequired,
+  contentUrl: PropTypes.string.isRequired,
+  content: PropTypes.node.isRequired,
+  courseName: PropTypes.string.isRequired,
+  createdAt: PropTypes.string.isRequired,
+  lastRead: PropTypes.string.isRequired,
+};
+
+export default React.memo(NotificationRowItem);

src/Notifications/NotificationSections.jsx

@@ -0,0 +1,96 @@
+import React, { useCallback, useMemo } from 'react';
+import { Button, Spinner } from '@edx/paragon';
+import { useDispatch, useSelector } from 'react-redux';
+import { useIntl } from '@edx/frontend-platform/i18n';
+import isEmpty from 'lodash/isEmpty';
+import messages from './messages';
+import NotificationRowItem from './NotificationRowItem';
+import { markAllNotificationsAsRead } from './data/thunks';
+import {
+  selectNotificationsByIds, selectPaginationData, selectSelectedAppName, selectNotificationStatus,
+} from './data/selectors';
+import { splitNotificationsByTime } from './utils';
+import { updatePaginationRequest, RequestStatus } from './data/slice';
+
+const NotificationSections = () => {
+  const intl = useIntl();
+  const dispatch = useDispatch();
+  const selectedAppName = useSelector(selectSelectedAppName());
+  const notificationRequestStatus = useSelector(selectNotificationStatus());
+  const notifications = useSelector(selectNotificationsByIds(selectedAppName));
+  const { hasMorePages } = useSelector(selectPaginationData());
+  const { today = [], earlier = [] } = useMemo(
+    () => splitNotificationsByTime(notifications),
+    [notifications],
+  );
+
+  const handleMarkAllAsRead = useCallback(() => {
+    dispatch(markAllNotificationsAsRead(selectedAppName));
+  }, [dispatch, selectedAppName]);
+
+  const updatePagination = useCallback(() => {
+    dispatch(updatePaginationRequest());
+  }, [dispatch]);
+
+  const renderNotificationSection = (section, items) => {
+    if (isEmpty(items)) { return null; }
+
+    return (
+      <div className="pb-2">
+        <div className="d-flex justify-content-between align-items-center py-10px mb-2">
+          <span className="text-gray-500 line-height-10">
+            {section === 'today' && intl.formatMessage(messages.notificationTodayHeading)}
+            {section === 'earlier' && intl.formatMessage(messages.notificationEarlierHeading)}
+          </span>
+          {notifications?.length > 0 && (section === 'earlier' ? today.length === 0 : true) && (
+            <Button
+              variant="link"
+              className="text-info-500 font-size-14 line-height-10 text-decoration-none p-0 border-0"
+              onClick={handleMarkAllAsRead}
+              data-testid="mark-all-read"
+            >
+              {intl.formatMessage(messages.notificationMarkAsRead)}
+            </Button>
+          )}
+        </div>
+        {items.map((notification) => (
+          <NotificationRowItem
+            key={notification.id}
+            id={notification.id}
+            type={notification.type}
+            contentUrl={notification.contentUrl}
+            content={notification.content}
+            courseName={notification.courseName}
+            createdAt={notification.createdAt}
+            lastRead={notification.lastRead}
+          />
+        ))}
+      </div>
+    );
+  };
+
+  return (
+    <div className="mt-4 px-4" data-testid="notification-tray-section">
+      {renderNotificationSection('today', today)}
+      {renderNotificationSection('earlier', earlier)}
+      {hasMorePages && notificationRequestStatus === RequestStatus.IN_PROGRESS ? (
+        <div className="d-flex justify-content-center p-4">
+          <Spinner animation="border" variant="primary" size="lg" />
+        </div>
+      ) : (hasMorePages && notificationRequestStatus === RequestStatus.SUCCESSFUL
+        && (
+          <Button
+            variant="primary"
+            className="w-100 bg-primary-500"
+            onClick={updatePagination}
+            data-testid="load-more-notifications"
+          >
+            {intl.formatMessage(messages.loadMoreNotifications)}
+          </Button>
+        )
+      )}
+    </div>
+  );
+};
+
+export default React.memo(NotificationSections);

src/Notifications/NotificationTabs.jsx

@@ -0,0 +1,53 @@
+/* eslint-disable react-hooks/exhaustive-deps */
+import React, { useCallback, useEffect, useMemo } from 'react';
+import { useDispatch, useSelector } from 'react-redux';
+import { Tab, Tabs } from '@edx/paragon';
+import NotificationSections from './NotificationSections';
+import { fetchNotificationList, markNotificationsAsSeen } from './data/thunks';
+import {
+  selectNotificationTabs, selectNotificationTabsCount, selectPaginationData, selectSelectedAppName,
+} from './data/selectors';
+import { updateAppNameRequest } from './data/slice';
+
+const NotificationTabs = () => {
+  const dispatch = useDispatch();
+  const selectedAppName = useSelector(selectSelectedAppName());
+  const notificationUnseenCounts = useSelector(selectNotificationTabsCount());
+  const notificationTabs = useSelector(selectNotificationTabs());
+  const { currentPage } = useSelector(selectPaginationData());
+
+  useEffect(() => {
+    dispatch(fetchNotificationList({ appName: selectedAppName, page: currentPage }));
+    if (selectedAppName) { dispatch(markNotificationsAsSeen(selectedAppName)); }
+  }, [currentPage, selectedAppName]);
+
+  const handleActiveTab = useCallback((appName) => {
+    dispatch(updateAppNameRequest({ appName }));
+  }, []);
+
+  const tabArray = useMemo(() => notificationTabs?.map((appName) => (
+    <Tab
+      key={appName}
+      eventKey={appName}
+      title={appName}
+      notification={notificationUnseenCounts[appName]}
+      tabClassName="pt-0 pb-10px px-2.5 d-flex border-top-0 mb-0 align-items-center line-height-24 text-capitalize"
+      data-testid={`notification-tab-${appName}`}
+    >
+      {appName === selectedAppName && (<NotificationSections />)}
+    </Tab>
+  )), [notificationUnseenCounts, selectedAppName, notificationTabs]);
+
+  return (
+    <Tabs
+      variant="tabs"
+      defaultActiveKey={selectedAppName}
+      onSelect={handleActiveTab}
+      className="px-2.5 text-primary-500"
+    >
+      {tabArray}
+    </Tabs>
+  );
+};
+
+export default React.memo(NotificationTabs);

src/Notifications/data/__factories__/index.js

@@ -0,0 +1 @@
+import './notifications.factory';

src/Notifications/data/__factories__/notifications.factory.js

@@ -0,0 +1,31 @@
+import { Factory } from 'rosie';
+
+Factory.define('notificationsCount')
+  .attr('count', 45)
+  .attr('countByAppName', {
+    reminders: 10,
+    discussion: 20,
+    grades: 10,
+    authoring: 5,
+  })
+  .attr('showNotificationsTray', true);
+
+Factory.define('notification')
+  .sequence('id')
+  .attr('type', 'post')
+  .sequence('content', ['id'], (idx, notificationId) => `<p><strong>User ${idx}</strong> posts <strong>Hello and welcome to SC0x
+  ${notificationId}!</strong></p>`)
+  .attr('course_name', 'Supply Chain Analytics')
+  .sequence('content_url', (idx) => `https://example.com/${idx}`)
+  .attr('last_read', null)
+  .attr('last_seen', null)
+  .sequence('created_at', ['createdDate'], (idx, date) => date);
+
+Factory.define('notificationsList')
+  .attr('next', null)
+  .attr('previous', null)
+  .attr('count', null, 2)
+  .attr('num_pages', null, 1)
+  .attr('current_page', null, 1)
+  .attr('start', null, 0)
+  .attr('results', ['results'], (results) => results || Factory.buildList('notification', 2, null, { createdDate: new Date().toISOString() }));

src/Notifications/data/api.js

@@ -0,0 +1,39 @@
+import { getConfig, snakeCaseObject } from '@edx/frontend-platform';
+import { getAuthenticatedHttpClient } from '@edx/frontend-platform/auth';
+
+export const getNotificationsCountApiUrl = () => `${getConfig().LMS_BASE_URL}/api/notifications/count/`;
+export const getNotificationsListApiUrl = () => `${getConfig().LMS_BASE_URL}/api/notifications/`;
+export const markNotificationsSeenApiUrl = (appName) => `${getConfig().LMS_BASE_URL}/api/notifications/mark-seen/${appName}/`;
+export const markNotificationAsReadApiUrl = () => `${getConfig().LMS_BASE_URL}/api/notifications/read/`;
+
+export async function getNotificationsList(appName, page) {
+  const params = snakeCaseObject({ appName, page });
+  const { data } = await getAuthenticatedHttpClient().get(getNotificationsListApiUrl(), { params });
+  return data;
+}
+
+export async function getNotificationCounts() {
+  const { data } = await getAuthenticatedHttpClient().get(getNotificationsCountApiUrl());
+
+  return data;
+}
+
+export async function markNotificationSeen(appName) {
+  const { data } = await getAuthenticatedHttpClient().put(`${markNotificationsSeenApiUrl(appName)}`);
+
+  return data;
+}
+
+export async function markAllNotificationRead(appName) {
+  const params = snakeCaseObject({ appName });
+  const { data } = await getAuthenticatedHttpClient().patch(markNotificationAsReadApiUrl(), params);
+
+  return data;
+}
+
+export async function markNotificationRead(notificationId) {
+  const params = snakeCaseObject({ notificationId });
+  const { data } = await getAuthenticatedHttpClient().patch(markNotificationAsReadApiUrl(), params);
+
+  return { data, id: notificationId };
+}

src/Notifications/data/api.test.js

@@ -0,0 +1,147 @@
+import MockAdapter from 'axios-mock-adapter';
+import { Factory } from 'rosie';
+
+import { getAuthenticatedHttpClient } from '@edx/frontend-platform/auth';
+import { initializeMockApp } from '@edx/frontend-platform/testing';
+
+import {
+  getNotificationsListApiUrl, getNotificationsCountApiUrl, markNotificationAsReadApiUrl, markNotificationsSeenApiUrl,
+  getNotificationCounts, getNotificationsList, markNotificationSeen, markAllNotificationRead, markNotificationRead,
+} from './api';
+
+import './__factories__';
+
+const notificationCountsApiUrl = getNotificationsCountApiUrl();
+const notificationsApiUrl = getNotificationsListApiUrl();
+const markedAllNotificationsAsSeenApiUrl = markNotificationsSeenApiUrl('discussion');
+const markedAllNotificationsAsReadApiUrl = markNotificationAsReadApiUrl();
+
+let axiosMock = null;
+
+describe('Notifications API', () => {
+  beforeEach(async () => {
+    initializeMockApp({
+      authenticatedUser: {
+        userId: '123abc',
+        username: 'testuser',
+        administrator: false,
+        roles: [],
+      },
+    });
+    axiosMock = new MockAdapter(getAuthenticatedHttpClient());
+    Factory.resetAll();
+  });
+
+  afterEach(() => {
+    axiosMock.reset();
+  });
+
+  it('Successfully get notification counts for different tabs.', async () => {
+    axiosMock.onGet(notificationCountsApiUrl).reply(200, (Factory.build('notificationsCount')));
+
+    const { count, countByAppName } = await getNotificationCounts();
+
+    expect(count).toEqual(45);
+    expect(countByAppName.reminders).toEqual(10);
+    expect(countByAppName.discussion).toEqual(20);
+    expect(countByAppName.grades).toEqual(10);
+    expect(countByAppName.authoring).toEqual(5);
+  });
+
+  it.each([
+    { statusCode: 404, message: 'Failed to get notification counts.' },
+    { statusCode: 403, message: 'Denied to get notification counts.' },
+  ])('%s for notification counts API.', async ({ statusCode, message }) => {
+    axiosMock.onGet(notificationCountsApiUrl).reply(statusCode, { message });
+    try {
+      await getNotificationCounts();
+    } catch (error) {
+      expect(error.response.status).toEqual(statusCode);
+      expect(error.response.data.message).toEqual(message);
+    }
+  });
+
+  it('Successfully get notifications.', async () => {
+    axiosMock.onGet(notificationsApiUrl).reply(200, (Factory.build('notificationsList')));
+
+    const notifications = await getNotificationsList('discussion', 1);
+
+    expect(notifications.results).toHaveLength(2);
+  });
+
+  it.each([
+    { statusCode: 404, message: 'Failed to get notifications.' },
+    { statusCode: 403, message: 'Denied to get notifications.' },
+  ])('%s for notification API.', async ({ statusCode, message }) => {
+    axiosMock.onGet(notificationsApiUrl).reply(statusCode, { message });
+    try {
+      await getNotificationsList('discussion', 1);
+    } catch (error) {
+      expect(error.response.status).toEqual(statusCode);
+      expect(error.response.data.message).toEqual(message);
+    }
+  });
+
+  it('Successfully marked all notifications as seen for selected app.', async () => {
+    axiosMock.onPut(markedAllNotificationsAsSeenApiUrl).reply(200, { message: 'Notifications marked seen.' });
+
+    const { message } = await markNotificationSeen('discussion');
+
+    expect(message).toEqual('Notifications marked seen.');
+  });
+
+  it.each([
+    { statusCode: 404, message: 'Failed to mark all notifications as seen for selected app.' },
+    { statusCode: 403, message: 'Denied to mark all notifications as seen for selected app.' },
+  ])('%s for notification mark as seen API.', async ({ statusCode, message }) => {
+    axiosMock.onPut(markedAllNotificationsAsSeenApiUrl).reply(statusCode, { message });
+    try {
+      await markNotificationSeen('discussion');
+    } catch (error) {
+      expect(error.response.status).toEqual(statusCode);
+      expect(error.response.data.message).toEqual(message);
+    }
+  });
+
+  it('Successfully marked all notifications as read for selected app.', async () => {
+    axiosMock.onPatch(markedAllNotificationsAsReadApiUrl).reply(200, { message: 'Notifications marked read.' });
+
+    const { message } = await markAllNotificationRead('discussion');
+
+    expect(message).toEqual('Notifications marked read.');
+  });
+
+  it.each([
+    { statusCode: 404, message: 'Failed to mark all notifications as read for selected app.' },
+    { statusCode: 403, message: 'Denied to mark all notifications as read for selected app.' },
+  ])('%s for notification mark all as read API.', async ({ statusCode, message }) => {
+    axiosMock.onPatch(markedAllNotificationsAsReadApiUrl).reply(statusCode, { message });
+    try {
+      await markAllNotificationRead('discussion');
+    } catch (error) {
+      expect(error.response.status).toEqual(statusCode);
+      expect(error.response.data.message).toEqual(message);
+    }
+  });
+
+  it('Successfully marked notification as read.', async () => {
+    axiosMock.onPatch(markedAllNotificationsAsReadApiUrl).reply(200, { message: 'Notification marked read.' });
+
+    const { data } = await markNotificationRead(1);
+
+    expect(data.message).toEqual('Notification marked read.');
+  });
+
+  it.each([
+    { statusCode: 404, message: 'Failed to mark notification as read.' },
+    { statusCode: 403, message: 'Denied to mark notification as read.' },
+  ])('%s for notification mark as read API.', async ({ statusCode, message }) => {
+    axiosMock.onPatch(markedAllNotificationsAsReadApiUrl).reply(statusCode, { message });
+    try {
+      await markAllNotificationRead(1);
+    } catch (error) {
+      expect(error.response.status).toEqual(statusCode);
+      expect(error.response.data.message).toEqual(message);
+    }
+  });
+});

src/Notifications/data/hook.js

@@ -0,0 +1,11 @@
+import { breakpoints, useWindowSize } from '@edx/paragon';
+
+export function useIsOnMediumScreen() {
+  const windowSize = useWindowSize();
+  return breakpoints.large.maxWidth > windowSize.width && windowSize.width >= breakpoints.medium.minWidth;
+}
+
+export function useIsOnLargeScreen() {
+  const windowSize = useWindowSize();
+  return windowSize.width >= breakpoints.extraLarge.minWidth;
+}

src/Notifications/data/index.js

@@ -0,0 +1 @@
+export * from './slice';

src/Notifications/data/notifications.json

@@ -0,0 +1,134 @@
+{
+  "data": [
+    {
+      "id": 1,
+      "type": "post",
+      "content": "<p><b>SCM_Lead</b> posts <b>Hello and welcome to SC0x!</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:46:11.979531Z"
+    },
+    {
+      "id": 2,
+      "type": "help",
+      "content": "<p><b>MITx_Learner</b> asked <b>What grade does a student need to get in order to pass the course and earn a certificate?</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:36:11.979531Z"
+    },
+    {
+      "id": 3,
+      "type": "post",
+      "content": "<p><b>SCM_Lead</b> posts <b>Hello and welcome to SC0x!</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:46:11.979531Z"
+    },
+    {
+      "id": 4,
+      "type": "respond",
+      "content": "<p><b>MITx_Learner</b> responded <b>Can't find linear regression in section 3 review</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:36:11.979531Z"
+    },
+    {
+      "id": 5,
+      "type": "comment",
+      "content": "<p><b>MITx_Learner</b> commented on <b>MITx_Expert's</b> response on a post your following <b>Can't find linear regression in section 3 review</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:36:11.979531Z"
+    },
+    {
+      "id": 6,
+      "type": "question",
+      "content": "<p><b>MITx_Learner</b> commented <b>Examples of quadratic equations in supply chains</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:36:11.979531Z"
+    },
+    {
+      "id": 7,
+      "type": "answer",
+      "content": "<p><b>MITx_Expert</b> answered <b>Examples of quadratic equations in supply chains</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-05T00:36:11.979531Z"
+    },
+    {
+      "id": 8,
+      "type": "comment",
+      "content": "<p><b>MITx_Learner</b> commented <b>Examples of quadratic equations in supply chains</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:36:11.979531Z"
+    },
+    {
+      "id": 9,
+      "type": "comment",
+      "content": "<p><b>MITx_Learner</b> commented on <b>MITx_Expert's</b>what grade does a student need to get in order to pass the course and earn a certificate?</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:36:11.979531Z"
+    },
+    {
+      "id": 10,
+      "type": "comment",
+      "content": "<p><b>MITx_Learner</b> commented on your response in <b>Convexity of f(x)=1/x , x>1</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:36:11.979531Z"
+    },
+    {
+      "id": 11,
+      "type": "answer",
+      "content": "<p><b>SCM_Lead’s</b> response has been marked as answer in your post <b>Quiz in section 3 - Please explain the F-Significance value</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:36:11.979531Z"
+    },
+    {
+      "id": 12,
+      "type": "endorsed",
+      "content": "<p>Your response has been endorsed in <b>Quiz in section 3 - Please explain the F-Significance value</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:36:11.979531Z"
+    },
+    {
+      "id": 13,
+      "type": "reported",
+      "content": "<p><b>MITx Learner’s</b> post has been reported <b>“Here are the exam answers. Question 1 - CSA stands for Compliance Safety Ac...”</b></p>",
+      "course_name": "Supply Chain Analytics",
+      "content_url": "",
+      "last_read": null,
+      "last_seen": null,
+      "created_at": "2023-06-01T00:36:11.979531Z"
+    }
+  ]
+}

src/Notifications/data/redux.test.js

@@ -0,0 +1,155 @@
+import MockAdapter from 'axios-mock-adapter';
+import { Factory } from 'rosie';
+
+import { getAuthenticatedHttpClient } from '@edx/frontend-platform/auth';
+import { initializeMockApp } from '@edx/frontend-platform/testing';
+
+import { initializeStore } from '../../store';
+import executeThunk from '../../test-utils';
+import mockNotificationsResponse from '../test-utils';
+import {
+  getNotificationsListApiUrl, getNotificationsCountApiUrl, markNotificationAsReadApiUrl, markNotificationsSeenApiUrl,
+} from './api';
+import {
+  fetchAppsNotificationCount, fetchNotificationList, markNotificationsAsRead, markAllNotificationsAsRead,
+  resetNotificationState, markNotificationsAsSeen,
+} from './thunks';
+
+import './__factories__';
+
+const notificationCountsApiUrl = getNotificationsCountApiUrl();
+const notificationsListApiUrl = getNotificationsListApiUrl();
+const markedAllNotificationsAsReadApiUrl = markNotificationAsReadApiUrl();
+const markedAllNotificationsAsSeenApiUrl = markNotificationsSeenApiUrl('discussion');
+
+let axiosMock;
+let store;
+
+describe('Notification Redux', () => {
+  beforeEach(async () => {
+    initializeMockApp({
+      authenticatedUser: {
+        userId: '123abc',
+        username: 'testuser',
+        administrator: false,
+        roles: [],
+      },
+    });
+    axiosMock = new MockAdapter(getAuthenticatedHttpClient());
+    Factory.resetAll();
+    store = initializeStore();
+
+    ({ store, axiosMock } = await mockNotificationsResponse());
+  });
+
+  afterEach(() => {
+    axiosMock.reset();
+  });
+
+  it('Successfully loaded initial notification states in the redux.', async () => {
+    executeThunk(resetNotificationState(), store.dispatch, store.getState);
+
+    const { notifications } = store.getState();
+
+    expect(notifications.notificationStatus).toEqual('idle');
+    expect(notifications.appName).toEqual('discussion');
+    expect(notifications.appsId).toHaveLength(0);
+    expect(notifications.apps).toEqual({});
+    expect(notifications.notifications).toEqual({});
+    expect(notifications.tabsCount).toEqual({});
+    expect(notifications.showNotificationsTray).toEqual(false);
+    expect(notifications.pagination).toEqual({});
+  });
+
+  it('Successfully loaded notifications list in the redux.', async () => {
+    const { notifications: { notifications } } = store.getState();
+    expect(Object.keys(notifications)).toHaveLength(10);
+  });
+
+  it.each([
+    { statusCode: 404, status: 'failed' },
+    { statusCode: 403, status: 'denied' },
+  ])('%s to load notifications list in the redux.', async ({ statusCode, status }) => {
+    axiosMock.onGet(notificationsListApiUrl).reply(statusCode);
+    await executeThunk(fetchNotificationList({ page: 1 }), store.dispatch, store.getState);
+
+    const { notifications: { notificationStatus } } = store.getState();
+
+    expect(notificationStatus).toEqual(status);
+  });
+
+  it('Successfully loaded notification counts in the redux.', async () => {
+    const { notifications: { tabsCount } } = store.getState();
+
+    expect(tabsCount.count).toEqual(25);
+    expect(tabsCount.reminders).toEqual(10);
+    expect(tabsCount.discussion).toEqual(0);
+    expect(tabsCount.grades).toEqual(10);
+    expect(tabsCount.authoring).toEqual(5);
+  });
+
+  it.each([
+    { statusCode: 404, status: 'failed' },
+    { statusCode: 403, status: 'denied' },
+  ])('%s to load notification counts in the redux.', async ({ statusCode, status }) => {
+    axiosMock.onGet(notificationCountsApiUrl).reply(statusCode);
+    await executeThunk(fetchAppsNotificationCount(), store.dispatch, store.getState);
+
+    const { notifications: { notificationStatus } } = store.getState();
+
+    expect(notificationStatus).toEqual(status);
+  });
+
+  it('Successfully marked all notifications as seen for selected app.', async () => {
+    axiosMock.onPut(markedAllNotificationsAsSeenApiUrl).reply(200);
+    await executeThunk(markNotificationsAsSeen('discussion'), store.dispatch, store.getState);
+
+    expect(store.getState().notifications.notificationStatus).toEqual('successful');
+  });
+
+  it.each([
+    { statusCode: 404, status: 'failed' },
+    { statusCode: 403, status: 'denied' },
+  ])('%s to mark all notifications as seen for selected app.', async ({ statusCode, status }) => {
+    axiosMock.onPut(markedAllNotificationsAsSeenApiUrl).reply(statusCode);
+    await executeThunk(markNotificationsAsSeen('discussion'), store.dispatch, store.getState);
+
+    const { notifications: { notificationStatus } } = store.getState();
+
+    expect(notificationStatus).toEqual(status);
+  });
+
+  it('Successfully marked all notifications as read for selected app in the redux.', async () => {
+    axiosMock.onPatch(markedAllNotificationsAsReadApiUrl).reply(200);
+    await executeThunk(markAllNotificationsAsRead('discussion'), store.dispatch, store.getState);
+
+    const { notifications: { notificationStatus, notifications } } = store.getState();
+    const firstNotification = Object.values(notifications)[0];
+
+    expect(notificationStatus).toEqual('successful');
+    expect(firstNotification.lastRead).not.toBeNull();
+  });
+
+  it('Successfully marked notification as read in the redux.', async () => {
+    axiosMock.onPatch(markedAllNotificationsAsReadApiUrl).reply(200);
+    await executeThunk(markNotificationsAsRead(1), store.dispatch, store.getState);
+
+    const { notifications: { notificationStatus, notifications } } = store.getState();
+    const firstNotification = Object.values(notifications)[0];
+
+    expect(notificationStatus).toEqual('successful');
+    expect(firstNotification.lastRead).not.toBeNull();
+  });
+
+  it.each([
+    { statusCode: 404, status: 'failed' },
+    { statusCode: 403, status: 'denied' },
+  ])('%s to marked notification as read in the redux.', async ({ statusCode, status }) => {
+    axiosMock.onPatch(markedAllNotificationsAsReadApiUrl).reply(statusCode);
+    await executeThunk(markNotificationsAsRead(1), store.dispatch, store.getState);
+
+    const { notifications: { notificationStatus } } = store.getState();
+
+    expect(notificationStatus).toEqual(status);
+  });
+});

src/Notifications/data/selector.test.jsx

@@ -0,0 +1,115 @@
+import MockAdapter from 'axios-mock-adapter';
+import { Factory } from 'rosie';
+
+import { getAuthenticatedHttpClient } from '@edx/frontend-platform/auth';
+import { initializeMockApp } from '@edx/frontend-platform/testing';
+
+import { initializeStore } from '../../store';
+import mockNotificationsResponse from '../test-utils';
+import {
+  selectNotifications,
+  selectNotificationsByIds,
+  selectNotificationStatus,
+  selectNotificationTabs,
+  selectNotificationTabsCount,
+  selectPaginationData,
+  selectSelectedAppName,
+  selectSelectedAppNotificationIds,
+  selectShowNotificationTray,
+} from './selectors';
+
+import './__factories__';
+
+let axiosMock;
+let store;
+
+describe('Notification Selectors', () => {
+  beforeEach(async () => {
+    initializeMockApp({
+      authenticatedUser: {
+        userId: '123abc',
+        username: 'testuser',
+        administrator: false,
+        roles: [],
+      },
+    });
+    axiosMock = new MockAdapter(getAuthenticatedHttpClient());
+    Factory.resetAll();
+    store = initializeStore();
+
+    ({ store, axiosMock } = await mockNotificationsResponse());
+  });
+
+  afterEach(() => {
+    axiosMock.reset();
+  });
+
+  it('Should return notification status.', async () => {
+    const state = store.getState();
+    const status = selectNotificationStatus()(state);
+
+    expect(status).toEqual('successful');
+  });
+
+  it('Should return notification tabs count.', async () => {
+    const state = store.getState();
+    const tabsCount = selectNotificationTabsCount()(state);
+
+    expect(tabsCount.count).toEqual(25);
+    expect(tabsCount.reminders).toEqual(10);
+    expect(tabsCount.discussion).toEqual(0);
+    expect(tabsCount.grades).toEqual(10);
+    expect(tabsCount.authoring).toEqual(5);
+  });
+
+  it('Should return notification tabs.', async () => {
+    const state = store.getState();
+    const tabs = selectNotificationTabs()(state);
+
+    expect(tabs).toHaveLength(4);
+  });
+
+  it('Should return selected app notification ids.', async () => {
+    const state = store.getState();
+    const notificationIds = selectSelectedAppNotificationIds('discussion')(state);
+
+    expect(notificationIds).toHaveLength(10);
+  });
+
+  it('Should return show notification tray status.', async () => {
+    const state = store.getState();
+    const showNotificationTrayStatus = selectShowNotificationTray()(state);
+
+    expect(showNotificationTrayStatus).toEqual(true);
+  });
+
+  it('Should return notifications.', async () => {
+    const state = store.getState();
+    const notifications = selectNotifications()(state);
+
+    expect(Object.keys(notifications)).toHaveLength(10);
+  });
+
+  it('Should return notifications from Ids.', async () => {
+    const state = store.getState();
+    const notifications = selectNotificationsByIds('discussion')(state);
+
+    expect(notifications).toHaveLength(10);
+  });
+
+  it('Should return selected app name.', async () => {
+    const state = store.getState();
+    const appName = selectSelectedAppName()(state);
+
+    expect(appName).toEqual('discussion');
+  });
+
+  it('Should return pagination data.', async () => {
+    const state = store.getState();
+    const paginationData = selectPaginationData()(state);
+
+    expect(paginationData.currentPage).toEqual(1);
+    expect(paginationData.numPages).toEqual(2);
+    expect(paginationData.hasMorePages).toEqual(true);
+  });
+});

src/Notifications/data/selectors.js

@@ -0,0 +1,23 @@
+import { createSelector } from '@reduxjs/toolkit';
+
+export const selectNotificationStatus = () => state => state.notifications.notificationStatus;
+
+export const selectNotificationTabsCount = () => state => state.notifications.tabsCount;
+
+export const selectNotificationTabs = () => state => state.notifications.appsId;
+
+export const selectSelectedAppNotificationIds = (appName) => state => state.notifications.apps[appName] ?? [];
+
+export const selectShowNotificationTray = () => state => state.notifications.showNotificationsTray;
+
+export const selectNotifications = () => state => state.notifications.notifications;
+
+export const selectNotificationsByIds = (appName) => createSelector(
+  selectNotifications(),
+  selectSelectedAppNotificationIds(appName),
+  (notifications, notificationIds) => notificationIds.map((notificationId) => notifications[notificationId]) || [],
+);
+
+export const selectSelectedAppName = () => state => state.notifications.appName;
+
+export const selectPaginationData = () => state => state.notifications.pagination;

src/Notifications/data/slice.js

@@ -0,0 +1,147 @@
+/* eslint-disable no-param-reassign */
+import { createSlice } from '@reduxjs/toolkit';
+
+export const RequestStatus = {
+  IDLE: 'idle',
+  IN_PROGRESS: 'in-progress',
+  SUCCESSFUL: 'successful',
+  FAILED: 'failed',
+  DENIED: 'denied',
+};
+
+const initialState = {
+  notificationStatus: RequestStatus.IDLE,
+  appName: 'discussion',
+  appsId: [],
+  apps: {},
+  notifications: {},
+  tabsCount: {},
+  showNotificationsTray: false,
+  pagination: {},
+};
+const slice = createSlice({
+  name: 'notifications',
+  initialState,
+  reducers: {
+    fetchNotificationDenied: (state) => {
+      state.notificationStatus = RequestStatus.DENIED;
+    },
+    fetchNotificationFailure: (state) => {
+      state.notificationStatus = RequestStatus.FAILED;
+    },
+    fetchNotificationRequest: (state) => {
+      state.notificationStatus = RequestStatus.IN_PROGRESS;
+    },
+    fetchNotificationSuccess: (state, { payload }) => {
+      const {
+        newNotificationIds, notificationsKeyValuePair, pagination,
+      } = payload;
+      const existingNotificationIds = state.apps[state.appName];
+      state.apps[state.appName] = Array.from(new Set([...existingNotificationIds, ...newNotificationIds]));
+      state.notifications = { ...state.notifications, ...notificationsKeyValuePair };
+      state.tabsCount.count -= state.tabsCount[state.appName];
+      state.tabsCount[state.appName] = 0;
+      state.notificationStatus = RequestStatus.SUCCESSFUL;
+      state.pagination = pagination;
+    },
+    fetchNotificationsCountDenied: (state) => {
+      state.notificationStatus = RequestStatus.DENIED;
+    },
+    fetchNotificationsCountFailure: (state) => {
+      state.notificationStatus = RequestStatus.FAILED;
+    },
+    fetchNotificationsCountRequest: (state) => {
+      state.notificationStatus = RequestStatus.IN_PROGRESS;
+    },
+    fetchNotificationsCountSuccess: (state, { payload }) => {
+      const {
+        countByAppName, appIds, apps, count, showNotificationsTray,
+      } = payload;
+      state.tabsCount = { count, ...countByAppName };
+      state.appsId = appIds;
+      state.apps = apps;
+      state.showNotificationsTray = showNotificationsTray;
+      state.notificationStatus = RequestStatus.SUCCESSFUL;
+    },
+    markNotificationsAsSeenRequest: (state) => {
+      state.notificationStatus = RequestStatus.IN_PROGRESS;
+    },
+    markNotificationsAsSeenSuccess: (state) => {
+      state.notificationStatus = RequestStatus.SUCCESSFUL;
+    },
+    markNotificationsAsSeenDenied: (state) => {
+      state.notificationStatus = RequestStatus.DENIED;
+    },
+    markNotificationsAsSeenFailure: (state) => {
+      state.notificationStatus = RequestStatus.FAILED;
+    },
+    markAllNotificationsAsReadRequest: (state) => {
+      state.notificationStatus = RequestStatus.IN_PROGRESS;
+    },
+    markAllNotificationsAsReadSuccess: (state) => {
+      const updatedNotifications = Object.fromEntries(
+        Object.entries(state.notifications).map(([key, notification]) => [
+          key, { ...notification, lastRead: new Date().toISOString() },
+        ]),
+      );
+      state.notifications = updatedNotifications;
+      state.notificationStatus = RequestStatus.SUCCESSFUL;
+    },
+    markAllNotificationsAsReadDenied: (state) => {
+      state.notificationStatus = RequestStatus.DENIED;
+    },
+    markAllNotificationsAsReadFailure: (state) => {
+      state.notificationStatus = RequestStatus.FAILED;
+    },
+    markNotificationsAsReadRequest: (state) => {
+      state.notificationStatus = RequestStatus.IN_PROGRESS;
+    },
+    markNotificationsAsReadSuccess: (state, { payload }) => {
+      const date = new Date().toISOString();
+      state.notifications[payload.id] = { ...state.notifications[payload.id], lastRead: date };
+      state.notificationStatus = RequestStatus.SUCCESSFUL;
+    },
+    markNotificationsAsReadDenied: (state) => {
+      state.notificationStatus = RequestStatus.DENIED;
+    },
+    markNotificationsAsReadFailure: (state) => {
+      state.notificationStatus = RequestStatus.FAILED;
+    },
+    resetNotificationStateRequest: () => initialState,
+    updateAppNameRequest: (state, { payload }) => {
+      state.appName = payload.appName;
+      state.pagination.currentPage = 1;
+    },
+    updatePaginationRequest: (state) => {
+      state.pagination.currentPage += 1;
+    },
+  },
+});
+
+export const {
+  fetchNotificationDenied,
+  fetchNotificationFailure,
+  fetchNotificationRequest,
+  fetchNotificationSuccess,
+  fetchNotificationsCountDenied,
+  fetchNotificationsCountFailure,
+  fetchNotificationsCountRequest,
+  fetchNotificationsCountSuccess,
+  markNotificationsAsSeenRequest,
+  markNotificationsAsSeenSuccess,
+  markNotificationsAsSeenFailure,
+  markNotificationsAsSeenDenied,
+  markAllNotificationsAsReadDenied,
+  markAllNotificationsAsReadRequest,
+  markAllNotificationsAsReadSuccess,
+  markAllNotificationsAsReadFailure,
+  markNotificationsAsReadDenied,
+  markNotificationsAsReadRequest,
+  markNotificationsAsReadSuccess,
+  markNotificationsAsReadFailure,
+  resetNotificationStateRequest,
+  updateAppNameRequest,
+  updatePaginationRequest,
+} = slice.actions;
+
+export const notificationsReducer = slice.reducer;

src/Notifications/data/thunks.js

@@ -0,0 +1,135 @@
+import { camelCaseObject } from '@edx/frontend-platform';
+import {
+  fetchNotificationSuccess,
+  fetchNotificationRequest,
+  fetchNotificationFailure,
+  fetchNotificationDenied,
+  fetchNotificationsCountFailure,
+  fetchNotificationsCountRequest,
+  fetchNotificationsCountSuccess,
+  fetchNotificationsCountDenied,
+  markNotificationsAsSeenRequest,
+  markNotificationsAsSeenSuccess,
+  markNotificationsAsSeenFailure,
+  markNotificationsAsSeenDenied,
+  markNotificationsAsReadDenied,
+  resetNotificationStateRequest,
+  markAllNotificationsAsReadRequest,
+  markAllNotificationsAsReadSuccess,
+  markAllNotificationsAsReadFailure,
+  markAllNotificationsAsReadDenied,
+  markNotificationsAsReadRequest,
+  markNotificationsAsReadSuccess,
+  markNotificationsAsReadFailure,
+} from './slice';
+import {
+  getNotificationsList, getNotificationCounts, markNotificationSeen, markAllNotificationRead, markNotificationRead,
+} from './api';
+import { getHttpErrorStatus } from '../utils';
+
+const normalizeNotificationCounts = ({ countByAppName, count, showNotificationsTray }) => {
+  const appIds = Object.keys(countByAppName);
+  const apps = appIds.reduce((acc, appId) => { acc[appId] = []; return acc; }, {});
+  return {
+    countByAppName, appIds, apps, count, showNotificationsTray,
+  };
+};
+
+const normalizeNotifications = (data) => {
+  const newNotificationIds = data.results.map(notification => notification.id.toString());
+  const notificationsKeyValuePair = data.results.reduce((acc, obj) => { acc[obj.id] = obj; return acc; }, {});
+  const pagination = {
+    numPages: data.numPages,
+    currentPage: data.currentPage,
+    hasMorePages: !!data.next,
+  };
+  return {
+    newNotificationIds, notificationsKeyValuePair, pagination,
+  };
+};
+
+export const fetchNotificationList = ({ appName, page }) => (
+  async (dispatch) => {
+    try {
+      dispatch(fetchNotificationRequest({ appName }));
+      const data = await getNotificationsList(appName, page);
+      const normalisedData = normalizeNotifications((camelCaseObject(data)));
+      dispatch(fetchNotificationSuccess({ ...normalisedData }));
+    } catch (error) {
+      if (getHttpErrorStatus(error) === 403) {
+        dispatch(fetchNotificationDenied(appName));
+      } else {
+        dispatch(fetchNotificationFailure(appName));
+      }
+    }
+  }
+);
+
+export const fetchAppsNotificationCount = () => (
+  async (dispatch) => {
+    try {
+      dispatch(fetchNotificationsCountRequest());
+      const data = await getNotificationCounts();
+      const normalisedData = normalizeNotificationCounts((camelCaseObject(data)));
+      dispatch(fetchNotificationsCountSuccess({ ...normalisedData }));
+    } catch (error) {
+      if (getHttpErrorStatus(error) === 403) {
+        dispatch(fetchNotificationsCountDenied());
+      } else {
+        dispatch(fetchNotificationsCountFailure());
+      }
+    }
+  }
+);
+
+export const markAllNotificationsAsRead = (appName) => (
+  async (dispatch) => {
+    try {
+      dispatch(markAllNotificationsAsReadRequest({ appName }));
+      const data = await markAllNotificationRead(appName);
+      dispatch(markAllNotificationsAsReadSuccess(camelCaseObject(data)));
+    } catch (error) {
+      if (getHttpErrorStatus(error) === 403) {
+        dispatch(markAllNotificationsAsReadDenied());
+      } else {
+        dispatch(markAllNotificationsAsReadFailure());
+      }
+    }
+  }
+);
+
+export const markNotificationsAsRead = (notificationId) => (
+  async (dispatch) => {
+    try {
+      dispatch(markNotificationsAsReadRequest({ notificationId }));
+      const data = await markNotificationRead(notificationId);
+      dispatch(markNotificationsAsReadSuccess(camelCaseObject(data)));
+    } catch (error) {
+      if (getHttpErrorStatus(error) === 403) {
+        dispatch(markNotificationsAsReadDenied());
+      } else {
+        dispatch(markNotificationsAsReadFailure());
+      }
+    }
+  }
+);
+
+export const markNotificationsAsSeen = (appName) => (
+  async (dispatch) => {
+    try {
+      dispatch(markNotificationsAsSeenRequest({ appName }));
+      const data = await markNotificationSeen(appName);
+      dispatch(markNotificationsAsSeenSuccess(camelCaseObject(data)));
+    } catch (error) {
+      if (getHttpErrorStatus(error) === 403) {
+        dispatch(markNotificationsAsSeenDenied());
+      } else {
+        dispatch(markNotificationsAsSeenFailure());
+      }
+    }
+  }
+);
+
+export const resetNotificationState = () => (
+  async (dispatch) => { dispatch(resetNotificationStateRequest()); }
+);

src/Notifications/index.jsx

@@ -0,0 +1,103 @@
+/* eslint-disable react-hooks/exhaustive-deps */
+import React, {
+  useCallback, useEffect, useRef, useState,
+} from 'react';
+import { useDispatch, useSelector } from 'react-redux';
+import { useIntl } from '@edx/frontend-platform/i18n';
+import classNames from 'classnames';
+import {
+  Badge, Icon, IconButton, OverlayTrigger, Popover,
+} from '@edx/paragon';
+import { NotificationsNone, Settings } from '@edx/paragon/icons';
+import { selectNotificationTabsCount } from './data/selectors';
+import { resetNotificationState } from './data/thunks';
+import { useIsOnLargeScreen, useIsOnMediumScreen } from './data/hook';
+import NotificationTabs from './NotificationTabs';
+import messages from './messages';
+
+const Notifications = () => {
+  const intl = useIntl();
+  const dispatch = useDispatch();
+  const popoverRef = useRef(null);
+  const buttonRef = useRef(null);
+  const [enableNotificationTray, setEnableNotificationTray] = useState(false);
+  const notificationCounts = useSelector(selectNotificationTabsCount());
+  const isOnMediumScreen = useIsOnMediumScreen();
+  const isOnLargeScreen = useIsOnLargeScreen();
+
+  const hideNotificationTray = useCallback(() => {
+    setEnableNotificationTray(prevState => !prevState);
+  }, []);
+
+  const handleClickOutsideNotificationTray = useCallback((event) => {
+    if (!popoverRef.current?.contains(event.target) && !buttonRef.current?.contains(event.target)) {
+      setEnableNotificationTray(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    document.addEventListener('mousedown', handleClickOutsideNotificationTray);
+
+    return () => {
+      document.removeEventListener('mousedown', handleClickOutsideNotificationTray);
+      dispatch(resetNotificationState());
+    };
+  }, []);
+
+  return (
+    <OverlayTrigger
+      trigger="click"
+      key="bottom"
+      placement="bottom"
+      id="notificationTray"
+      show={enableNotificationTray}
+      overlay={(
+        <Popover
+          id="notificationTray"
+          data-testid="notification-tray"
+          className={classNames('overflow-auto rounded-0 border-0', {
+            'w-100': !isOnMediumScreen && !isOnLargeScreen,
+            'medium-screen': isOnMediumScreen,
+            'large-screen': isOnLargeScreen,
+          })}
+        >
+          <div ref={popoverRef}>
+            <Popover.Title as="h2" className="d-flex justify-content-between p-0 m-4 border-0 text-primary-500 font-size-18 line-height-24">
+              {intl.formatMessage(messages.notificationTitle)}
+              <Icon src={Settings} className="icon-size-20" data-testid="setting-icon" />
+            </Popover.Title>
+            <Popover.Content className="notification-content p-0">
+              <NotificationTabs />
+            </Popover.Content>
+          </div>
+        </Popover>
+      )}
+    >
+      <div ref={buttonRef}>
+        <IconButton
+          isActive={enableNotificationTray}
+          alt="notification bell icon"
+          onClick={hideNotificationTray}
+          src={NotificationsNone}
+          iconAs={Icon}
+          variant="light"
+          iconClassNames="text-primary-500"
+          className="ml-4 mr-1 my-3 notification-button"
+          data-testid="notification-bell-icon"
+        />
+        {notificationCounts?.count > 0 && (
+          <Badge
+            pill
+            variant="danger"
+            className="font-weight-normal px-1 notification-badge"
+            data-testid="notification-count"
+          >
+            {notificationCounts.count}
+          </Badge>
+        )}
+      </div>
+    </OverlayTrigger>
+  );
+};
+
+export default Notifications;

src/Notifications/index.test.jsx

@@ -0,0 +1,109 @@
+import React from 'react';
+
+import {
+  act, fireEvent, render, screen, waitFor,
+} from '@testing-library/react';
+import MockAdapter from 'axios-mock-adapter';
+import { Context as ResponsiveContext } from 'react-responsive';
+import { Factory } from 'rosie';
+
+import { initializeMockApp } from '@edx/frontend-platform';
+import { getAuthenticatedHttpClient } from '@edx/frontend-platform/auth';
+import { IntlProvider } from '@edx/frontend-platform/i18n';
+import { AppContext, AppProvider } from '@edx/frontend-platform/react';
+
+import AuthenticatedUserDropdown from '../learning-header/AuthenticatedUserDropdown';
+import { initializeStore } from '../store';
+import executeThunk from '../test-utils';
+import { getNotificationsCountApiUrl } from './data/api';
+import { fetchAppsNotificationCount } from './data/thunks';
+
+import './data/__factories__';
+
+const notificationCountsApiUrl = getNotificationsCountApiUrl();
+
+let axiosMock;
+let store;
+
+function renderComponent() {
+  render(
+    <ResponsiveContext.Provider>
+      <IntlProvider locale="en" messages={{}}>
+        <AppProvider store={store}>
+          <AppContext.Provider>
+            <AuthenticatedUserDropdown />
+          </AppContext.Provider>
+        </AppProvider>
+      </IntlProvider>
+    </ResponsiveContext.Provider>,
+  );
+}
+
+describe('Notification test cases.', () => {
+  beforeEach(async () => {
+    initializeMockApp({
+      authenticatedUser: {
+        userId: '123abc',
+        username: 'testuser',
+        administrator: false,
+        roles: [],
+      },
+    });
+
+    axiosMock = new MockAdapter(getAuthenticatedHttpClient());
+    Factory.resetAll();
+    store = initializeStore();
+  });
+
+  async function setupMockNotificationCountResponse(count = 45, showNotificationsTray = true) {
+    axiosMock.onGet(notificationCountsApiUrl)
+      .reply(200, (Factory.build('notificationsCount', { count, showNotificationsTray })));
+    await executeThunk(fetchAppsNotificationCount(), store.dispatch, store.getState);
+  }
+
+  it('Successfully showed bell icon and unseen count on it if unseen count is greater then 0.', async () => {
+    await setupMockNotificationCountResponse();
+    renderComponent();
+
+    const bellIcon = screen.queryByTestId('notification-bell-icon');
+    const notificationCount = screen.queryByTestId('notification-count');
+
+    expect(bellIcon).toBeInTheDocument();
+    expect(notificationCount).toBeInTheDocument();
+    expect(screen.queryByText(45)).toBeInTheDocument();
+  });
+
+  it('Successfully showed bell icon and hide unseen count tag when unseen count is zero.', async () => {
+    await setupMockNotificationCountResponse(0);
+    renderComponent();
+
+    const bellIcon = screen.queryByTestId('notification-bell-icon');
+    const notificationCount = screen.queryByTestId('notification-count');
+
+    expect(bellIcon).toBeInTheDocument();
+    expect(notificationCount).not.toBeInTheDocument();
+  });
+
+  it('Successfully hides bell icon when showNotificationsTray is false.', async () => {
+    await setupMockNotificationCountResponse(45, false);
+    renderComponent();
+
+    const bellIcon = screen.queryByTestId('notification-bell-icon');
+
+    expect(bellIcon).not.toBeInTheDocument();
+  });
+
+  it('Successfully viewed setting icon and show/hide notification tray by clicking on the bell icon .', async () => {
+    await setupMockNotificationCountResponse();
+    renderComponent();
+
+    const bellIcon = screen.queryByTestId('notification-bell-icon');
+
+    await act(async () => { fireEvent.click(bellIcon); });
+    expect(screen.queryByTestId('notification-tray')).toBeInTheDocument();
+    expect(screen.queryByTestId('setting-icon')).toBeInTheDocument();
+
+    await act(async () => { fireEvent.click(bellIcon); });
+    await waitFor(() => expect(screen.queryByTestId('notification-tray')).not.toBeInTheDocument());
+  });
+});

src/Notifications/messages.js

@@ -0,0 +1,36 @@
+import { defineMessages } from '@edx/frontend-platform/i18n';
+
+const messages = defineMessages({
+  notificationTitle: {
+    id: 'notification.title',
+    defaultMessage: 'Notifications',
+    description: 'Notifications',
+  },
+  notificationTodayHeading: {
+    id: 'notification.today.heading',
+    defaultMessage: 'Last 24 hours',
+    description: 'Today Notifications',
+  },
+  notificationEarlierHeading: {
+    id: 'notification.earlier.heading',
+    defaultMessage: 'Earlier',
+    description: 'Earlier Notifications',
+  },
+  notificationMarkAsRead: {
+    id: 'notification.mark.as.read',
+    defaultMessage: 'Mark all as read',
+    description: 'Mark all Notifications as read',
+  },
+  fullStop: {
+    id: 'notification.fullStop',
+    defaultMessage: '•',
+    description: 'Fullstop shown to users to indicate who edited a post.',
+  },
+  loadMoreNotifications: {
+    id: 'notification.load.more.notifications',
+    defaultMessage: 'Load more notifications',
+    description: 'Load more button to load more notifications',
+  },
+});
+
+export default messages;

src/Notifications/notificationRowItem.test.jsx

@@ -0,0 +1,87 @@
+import React from 'react';
+
+import {
+  act, fireEvent, render, screen,
+} from '@testing-library/react';
+import MockAdapter from 'axios-mock-adapter';
+import { Context as ResponsiveContext } from 'react-responsive';
+import { Factory } from 'rosie';
+
+import { initializeMockApp } from '@edx/frontend-platform';
+import { getAuthenticatedHttpClient } from '@edx/frontend-platform/auth';
+import { IntlProvider } from '@edx/frontend-platform/i18n';
+import { AppContext, AppProvider } from '@edx/frontend-platform/react';
+
+import AuthenticatedUserDropdown from '../learning-header/AuthenticatedUserDropdown';
+import { initializeStore } from '../store';
+import { markNotificationAsReadApiUrl } from './data/api';
+import mockNotificationsResponse from './test-utils';
+
+import './data/__factories__';
+
+const markedNotificationAsReadApiUrl = markNotificationAsReadApiUrl();
+
+let axiosMock;
+let store;
+
+function renderComponent() {
+  render(
+    <ResponsiveContext.Provider>
+      <IntlProvider locale="en" messages={{}}>
+        <AppProvider store={store}>
+          <AppContext.Provider>
+            <AuthenticatedUserDropdown />
+          </AppContext.Provider>
+        </AppProvider>
+      </IntlProvider>
+    </ResponsiveContext.Provider>,
+  );
+}
+
+describe('Notification row item test cases.', () => {
+  beforeEach(async () => {
+    initializeMockApp({
+      authenticatedUser: {
+        userId: 3,
+        username: 'abc123',
+        administrator: true,
+        roles: [],
+      },
+    });
+
+    axiosMock = new MockAdapter(getAuthenticatedHttpClient());
+    Factory.resetAll();
+    store = initializeStore();
+
+    ({ store, axiosMock } = await mockNotificationsResponse());
+  });
+
+  it(
+    'Successfully viewed notification icon, notification context, unread , course name and notification time.',
+    async () => {
+      renderComponent();
+
+      const bellIcon = screen.queryByTestId('notification-bell-icon');
+      await act(async () => { fireEvent.click(bellIcon); });
+
+      expect(screen.queryByTestId('notification-icon-1')).toBeInTheDocument();
+      expect(screen.queryByTestId('notification-content-1')).toBeInTheDocument();
+      expect(screen.queryByTestId('notification-course-1')).toBeInTheDocument();
+      expect(screen.queryByTestId('notification-created-date-1')).toBeInTheDocument();
+      expect(screen.queryByTestId('unread-notification-1')).toBeInTheDocument();
+    },
+  );
+
+  it('Successfully marked notification as read.', async () => {
+    axiosMock.onPatch(markedNotificationAsReadApiUrl).reply(200, { message: 'Notification marked read.' });
+    renderComponent();
+
+    const bellIcon = screen.queryByTestId('notification-bell-icon');
+    await act(async () => { fireEvent.click(bellIcon); });
+
+    const notification = screen.queryByTestId('notification-1');
+    await act(async () => { fireEvent.click(notification); });
+
+    expect(screen.queryByTestId('unread-notification-1')).not.toBeInTheDocument();
+  });
+});

src/Notifications/notificationSections.test.jsx

@@ -0,0 +1,106 @@
+import React from 'react';
+
+import {
+  act, fireEvent, render, screen, within,
+} from '@testing-library/react';
+import MockAdapter from 'axios-mock-adapter';
+import { Context as ResponsiveContext } from 'react-responsive';
+import { Factory } from 'rosie';
+
+import { initializeMockApp } from '@edx/frontend-platform';
+import { getAuthenticatedHttpClient } from '@edx/frontend-platform/auth';
+import { IntlProvider } from '@edx/frontend-platform/i18n';
+import { AppContext, AppProvider } from '@edx/frontend-platform/react';
+
+import AuthenticatedUserDropdown from '../learning-header/AuthenticatedUserDropdown';
+import { initializeStore } from '../store';
+import { markNotificationAsReadApiUrl, markNotificationsSeenApiUrl, getNotificationsListApiUrl } from './data/api';
+import mockNotificationsResponse from './test-utils';
+import { markNotificationsAsSeen, fetchNotificationList } from './data/thunks';
+import executeThunk from '../test-utils';
+import './data/__factories__';
+
+const markedAllNotificationsAsReadApiUrl = markNotificationAsReadApiUrl();
+
+let axiosMock;
+let store;
+
+function renderComponent() {
+  render(
+    <ResponsiveContext.Provider>
+      <IntlProvider locale="en" messages={{}}>
+        <AppProvider store={store}>
+          <AppContext.Provider>
+            <AuthenticatedUserDropdown />
+          </AppContext.Provider>
+        </AppProvider>
+      </IntlProvider>
+    </ResponsiveContext.Provider>,
+  );
+}
+
+describe('Notification sections test cases.', () => {
+  beforeEach(async () => {
+    initializeMockApp({
+      authenticatedUser: {
+        userId: 3,
+        username: 'abc123',
+        administrator: true,
+        roles: [],
+      },
+    });
+
+    axiosMock = new MockAdapter(getAuthenticatedHttpClient());
+    Factory.resetAll();
+    store = initializeStore();
+
+    ({ store, axiosMock } = await mockNotificationsResponse());
+  });
+
+  it('Successfully viewed last 24 hours and earlier section along with mark all as read label.', async () => {
+    renderComponent();
+
+    const bellIcon = screen.queryByTestId('notification-bell-icon');
+    await act(async () => { fireEvent.click(bellIcon); });
+    const notificationTraySection = screen.queryByTestId('notification-tray-section');
+
+    expect(within(notificationTraySection).queryByText('Last 24 hours')).toBeInTheDocument();
+    expect(within(notificationTraySection).queryByText('Earlier')).toBeInTheDocument();
+    expect(within(notificationTraySection).queryByText('Mark all as read')).toBeInTheDocument();
+  });
+
+  it('Successfully marked all notifications as read, removing the unread status.', async () => {
+    axiosMock.onPatch(markedAllNotificationsAsReadApiUrl).reply(200, { message: 'Notifications marked read.' });
+    renderComponent();
+
+    const bellIcon = screen.queryByTestId('notification-bell-icon');
+    await act(async () => { fireEvent.click(bellIcon); });
+    const markAllReadButton = screen.queryByTestId('mark-all-read');
+
+    expect(screen.queryByTestId('unread-notification-1')).toBeInTheDocument();
+    await act(async () => { fireEvent.click(markAllReadButton); });
+
+    expect(screen.queryByTestId('unread-notification-1')).not.toBeInTheDocument();
+  });
+
+  it('Successfully load more notifications by clicking on load more notification button.', async () => {
+    axiosMock.onPut(markNotificationsSeenApiUrl('discussion')).reply(200);
+    await executeThunk(markNotificationsAsSeen('discussions'), store.dispatch, store.getState);
+    renderComponent();
+
+    const bellIcon = screen.queryByTestId('notification-bell-icon');
+    await act(async () => { fireEvent.click(bellIcon); });
+
+    expect(screen.queryAllByTestId('notification-contents')).toHaveLength(10);
+    const loadMoreButton = screen.queryByTestId('load-more-notifications');
+
+    axiosMock.onGet(getNotificationsListApiUrl()).reply(
+      200,
+      (Factory.build('notificationsList', { num_pages: 2, current_page: 2 })),
+    );
+    await executeThunk(fetchNotificationList({ appName: 'discussion', page: 2 }), store.dispatch, store.getState);
+
+    await act(async () => { fireEvent.click(loadMoreButton); });
+    expect(screen.queryAllByTestId('notification-contents')).toHaveLength(12);
+  });
+});

src/Notifications/notificationTabs.test.jsx

@@ -0,0 +1,91 @@
+import React from 'react';
+
+import {
+  act, fireEvent, render, screen, within,
+} from '@testing-library/react';
+import { Context as ResponsiveContext } from 'react-responsive';
+import { Factory } from 'rosie';
+
+import { initializeMockApp } from '@edx/frontend-platform';
+import { IntlProvider } from '@edx/frontend-platform/i18n';
+import { AppContext, AppProvider } from '@edx/frontend-platform/react';
+
+import AuthenticatedUserDropdown from '../learning-header/AuthenticatedUserDropdown';
+import { initializeStore } from '../store';
+import mockNotificationsResponse from './test-utils';
+
+import './data/__factories__';
+
+let store;
+
+function renderComponent() {
+  render(
+    <ResponsiveContext.Provider>
+      <IntlProvider locale="en" messages={{}}>
+        <AppProvider store={store}>
+          <AppContext.Provider>
+            <AuthenticatedUserDropdown />
+          </AppContext.Provider>
+        </AppProvider>
+      </IntlProvider>
+    </ResponsiveContext.Provider>,
+  );
+}
+
+describe('Notification Tabs test cases.', () => {
+  beforeEach(async () => {
+    initializeMockApp({
+      authenticatedUser: {
+        userId: '123abc',
+        username: 'testuser',
+        administrator: false,
+        roles: [],
+      },
+    });
+
+    Factory.resetAll();
+    store = initializeStore();
+
+    ({ store } = await mockNotificationsResponse());
+  });
+
+  it('Notification tabs displayed with default discussion tab selected and no unseen counts.', async () => {
+    renderComponent();
+
+    const bellIcon = screen.queryByTestId('notification-bell-icon');
+    await act(async () => { fireEvent.click(bellIcon); });
+
+    const tabs = screen.queryAllByRole('tab');
+    const selectedTab = tabs.find(tab => tab.getAttribute('aria-selected') === 'true');
+
+    expect(tabs.length).toEqual(5);
+    expect(within(selectedTab).queryByText('discussion')).toBeInTheDocument();
+    expect(within(selectedTab).queryByRole('status')).not.toBeInTheDocument();
+  });
+
+  it('Successfully showed unseen counts for unselected tabs.', async () => {
+    renderComponent();
+    const bellIcon = screen.queryByTestId('notification-bell-icon');
+    await act(async () => { fireEvent.click(bellIcon); });
+
+    const tabs = screen.getAllByRole('tab');
+
+    expect(within(tabs[0]).queryByRole('status')).toBeInTheDocument();
+  });
+
+  it('Successfully selected reminder tab.', async () => {
+    renderComponent();
+
+    const bellIcon = screen.queryByTestId('notification-bell-icon');
+    await act(async () => { fireEvent.click(bellIcon); });
+    const notificationTab = screen.getAllByRole('tab');
+
+    await act(async () => { fireEvent.click(notificationTab[0], { dataset: { rbEventKey: 'reminders' } }); });
+
+    const tabs = screen.queryAllByRole('tab');
+    const selectedTab = tabs.find(tab => tab.getAttribute('aria-selected') === 'true');
+
+    expect(within(selectedTab).queryByText('reminders')).toBeInTheDocument();
+    expect(within(selectedTab).queryByRole('status')).not.toBeInTheDocument();
+  });
+});

src/Notifications/test-utils.js

@@ -0,0 +1,32 @@
+import MockAdapter from 'axios-mock-adapter';
+import { Factory } from 'rosie';
+
+import { getAuthenticatedHttpClient } from '@edx/frontend-platform/auth';
+
+import { initializeStore } from '../store';
+import executeThunk from '../test-utils';
+import { getNotificationsListApiUrl, getNotificationsCountApiUrl } from './data/api';
+import { fetchAppsNotificationCount, fetchNotificationList } from './data/thunks';
+
+import './data/__factories__';
+
+const notificationCountsApiUrl = getNotificationsCountApiUrl();
+const notificationsApiUrl = getNotificationsListApiUrl();
+
+export default async function mockNotificationsResponse() {
+  const store = initializeStore();
+  const axiosMock = new MockAdapter(getAuthenticatedHttpClient());
+  const notifications = (Factory.buildList('notification', 8, null, { createdDate: new Date().toISOString() }).concat(
+    Factory.buildList('notification', 2, null, { createdDate: '2023-06-01T00:46:11.979531Z' }),
+  ));
+  axiosMock.onGet(notificationCountsApiUrl).reply(200, (Factory.build('notificationsCount')));
+  axiosMock.onGet(notificationsApiUrl).reply(200, (Factory.build('notificationsList', {
+    results: notifications,
+    num_pages: 2,
+    next: `${notificationsApiUrl}?app_name=discussion&page=2`,
+  })));
+
+  await executeThunk(fetchAppsNotificationCount(), store.dispatch, store.getState);
+  await executeThunk(fetchNotificationList({ appName: 'discussion', page: 1 }), store.dispatch, store.getState);
+  return { store, axiosMock };
+}

src/Notifications/utils.js

@@ -0,0 +1,52 @@
+import {
+  CheckCircle, HelpOutline, QuestionAnswerOutline, Verified, Report, EditOutline, ThumbUpOutline, PostOutline,
+} from '@edx/paragon/icons';
+
+/**
+ * Get HTTP Error status from generic error.
+ * @param error Generic caught error.
+ * @returns {number|null}
+ */
+export const getHttpErrorStatus = error => error?.customAttributes?.httpErrorStatus ?? error?.response?.status;
+
+export const splitNotificationsByTime = (notificationList) => {
+  let splittedData = [];
+  if (notificationList.length > 0) {
+    const currentTime = Date.now();
+    const twentyFourHoursAgo = currentTime - (24 * 60 * 60 * 1000);
+
+    splittedData = notificationList.reduce(
+      (result, notification) => {
+        if (notification) {
+          const objectTime = new Date(notification.createdAt).getTime();
+          if (objectTime >= twentyFourHoursAgo && objectTime <= currentTime) {
+            result.today.push(notification);
+          } else {
+            result.earlier.push(notification);
+          }
+        }
+        return result;
+      },
+      { today: [], earlier: [] },
+    );
+  }
+  const { today, earlier } = splittedData;
+  return { today, earlier };
+};
+
+export const getIconByType = (type) => {
+  const iconMap = {
+    post: { icon: PostOutline, class: 'text-primary-500' },
+    help: { icon: HelpOutline, class: 'text-primary-500' },
+    respond: { icon: QuestionAnswerOutline, class: 'text-primary-500' },
+    comment: { icon: QuestionAnswerOutline, class: 'text-primary-500' },
+    question: { icon: QuestionAnswerOutline, class: 'text-primary-500' },
+    answer: { icon: CheckCircle, class: 'text-success' },
+    endorsed: { icon: Verified, class: 'text-primary-500' },
+    reported: { icon: Report, class: 'text-danger-500' },
+    postLiked: { icon: ThumbUpOutline, class: 'text-primary-500' },
+    commentLiked: { icon: ThumbUpOutline, class: 'text-primary-500' },
+    edited: { icon: EditOutline, class: 'text-primary-500' },
+  };
+  return iconMap[type] || { icon: PostOutline, class: 'text-primary-500' };
+};

src/StudioHeader.jsx

@@ -0,0 +1,200 @@
+import React, { useContext } from 'react';
+import PropTypes from 'prop-types';
+import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
+import { AppContext } from '@edx/frontend-platform/react';
+import {
+  APP_CONFIG_INITIALIZED,
+  ensureConfig,
+  getConfig,
+  mergeConfig,
+  subscribe,
+} from '@edx/frontend-platform';
+import { ActionRow } from '@edx/paragon';
+
+import { Menu, MenuTrigger, MenuContent } from './Menu';
+import Avatar from './Avatar';
+import { LinkedLogo, Logo } from './Logo';
+
+import { CaretIcon } from './Icons';
+
+import messages from './Header.messages';
+
+ensureConfig([
+  'STUDIO_BASE_URL',
+  'LOGOUT_URL',
+  'LOGIN_URL',
+  'SITE_NAME',
+  'LOGO_URL',
+  'ORDER_HISTORY_URL',
+], 'StudioHeader component');
+
+subscribe(APP_CONFIG_INITIALIZED, () => {
+  mergeConfig({
+    AUTHN_MINIMAL_HEADER: !!process.env.AUTHN_MINIMAL_HEADER,
+  }, 'StudioHeader additional config');
+});
+
+class StudioDesktopHeaderBase extends React.Component {
+  constructor(props) { // eslint-disable-line no-useless-constructor
+    super(props);
+  }
+
+  renderUserMenu() {
+    const {
+      userMenu,
+      avatar,
+      username,
+      intl,
+    } = this.props;
+
+    return (
+      <Menu transitionClassName="menu-dropdown" transitionTimeout={250}>
+        <MenuTrigger
+          tag="button"
+          aria-label={intl.formatMessage(messages['header.label.account.menu.for'], { username })}
+          className="btn btn-outline-primary d-inline-flex align-items-center pl-2 pr-3"
+        >
+          <Avatar size="1.5em" src={avatar} alt="" className="mr-2" />
+          {username} <CaretIcon role="img" aria-hidden focusable="false" />
+        </MenuTrigger>
+        <MenuContent className="mb-0 dropdown-menu show dropdown-menu-right pin-right shadow py-2">
+          {userMenu.map(({ type, href, content }) => (
+            <a className={`dropdown-${type}`} key={`${type}-${content}`} href={href}>{content}</a>
+          ))}
+        </MenuContent>
+      </Menu>
+    );
+  }
+
+  renderLoggedOutItems() {
+    const { loggedOutItems } = this.props;
+
+    return loggedOutItems.map((item, i, arr) => (
+      <a
+        key={`${item.type}-${item.content}`}
+        className={i < arr.length - 1 ? 'btn mr-2 btn-link' : 'btn mr-2 btn-outline-primary'}
+        href={item.href}
+      >
+        {item.content}
+      </a>
+    ));
+  }
+
+  render() {
+    const {
+      logo,
+      logoAltText,
+      logoDestination,
+      loggedIn,
+      intl,
+      actionRowContent,
+    } = this.props;
+    const logoProps = { src: logo, alt: logoAltText, href: logoDestination };
+    const logoClasses = getConfig().AUTHN_MINIMAL_HEADER ? 'mw-100' : null;
+
+    return (
+      <header className="site-header-desktop">
+        <a className="nav-skip sr-only sr-only-focusable" href="#main">{intl.formatMessage(messages['header.label.skip.nav'])}</a>
+        <div className={`container-fluid ${logoClasses}`}>
+          <div className="nav-container position-relative d-flex align-items-center">
+            {logoDestination === null ? <Logo className="logo" src={logo} alt={logoAltText} /> : <LinkedLogo className="logo" {...logoProps} />}
+            <ActionRow>
+              {actionRowContent}
+              <nav
+                aria-label={intl.formatMessage(messages['header.label.secondary.nav'])}
+                className="nav secondary-menu-container align-items-center ml-auto"
+              >
+                {loggedIn ? this.renderUserMenu() : this.renderLoggedOutItems()}
+              </nav>
+            </ActionRow>
+          </div>
+        </div>
+      </header>
+    );
+  }
+}
+
+StudioDesktopHeaderBase.propTypes = {
+  userMenu: PropTypes.arrayOf(PropTypes.shape({
+    type: PropTypes.oneOf(['item', 'menu']),
+    href: PropTypes.string,
+    content: PropTypes.string,
+  })),
+  loggedOutItems: PropTypes.arrayOf(PropTypes.shape({
+    type: PropTypes.oneOf(['item', 'menu']),
+    href: PropTypes.string,
+    content: PropTypes.string,
+  })),
+  logo: PropTypes.string,
+  logoAltText: PropTypes.string,
+  logoDestination: PropTypes.string,
+  avatar: PropTypes.string,
+  username: PropTypes.string,
+  loggedIn: PropTypes.bool,
+  actionRowContent: PropTypes.element,
+
+  // i18n
+  intl: intlShape.isRequired,
+};
+
+StudioDesktopHeaderBase.defaultProps = {
+  userMenu: [],
+  loggedOutItems: [],
+  logo: null,
+  logoAltText: null,
+  logoDestination: null,
+  avatar: null,
+  username: null,
+  loggedIn: false,
+  actionRowContent: null,
+};
+
+const StudioDesktopHeader = injectIntl(StudioDesktopHeaderBase);
+
+const StudioHeader = ({ intl, actionRowContent }) => {
+  const { authenticatedUser, config } = useContext(AppContext);
+
+  const userMenu = authenticatedUser === null ? [] : [
+    {
+      type: 'item',
+      href: `${config.STUDIO_BASE_URL}`,
+      content: intl.formatMessage(messages['header.user.menu.studio.home']),
+    },
+    {
+      type: 'item',
+      href: `${config.STUDIO_BASE_URL}/maintenance`,
+      content: intl.formatMessage(messages['header.user.menu.studio.maintenance']),
+    },
+    {
+      type: 'item',
+      href: config.LOGOUT_URL,
+      content: intl.formatMessage(messages['header.user.menu.logout']),
+    },
+  ];
+
+  const props = {
+    logo: config.LOGO_URL,
+    logoAltText: config.SITE_NAME,
+    logoDestination: config.STUDIO_BASE_URL,
+    loggedIn: authenticatedUser !== null,
+    username: authenticatedUser !== null ? authenticatedUser.username : null,
+    avatar: authenticatedUser !== null ? authenticatedUser.avatar : null,
+    actionRowContent,
+    userMenu,
+    loggedOutItems: [],
+  };
+
+  return <StudioDesktopHeader {...props} />;
+};
+
+StudioHeader.propTypes = {
+  intl: intlShape.isRequired,
+  actionRowContent: PropTypes.element,
+};
+
+StudioHeader.defaultProps = {
+  // eslint-disable-next-line react/jsx-no-useless-fragment
+  actionRowContent: <></>,
+};
+
+export default injectIntl(StudioHeader);

src/StudioHeader.test.jsx

@@ -0,0 +1,108 @@
+/* eslint-disable react/prop-types */
+import React, { useMemo } from 'react';
+import { IntlProvider } from '@edx/frontend-platform/i18n';
+import TestRenderer from 'react-test-renderer';
+import { Link } from 'react-router-dom';
+import { AppContext } from '@edx/frontend-platform/react';
+import {
+  ActionRow,
+  Button,
+  Dropdown,
+} from '@edx/paragon';
+
+import { StudioHeader } from './index';
+
+const StudioHeaderComponent = ({ contextValue, appMenu = null, mainMenu = [] }) => (
+  <IntlProvider locale="en" messages={{}}>
+    <AppContext.Provider
+      value={contextValue}
+    >
+      <StudioHeader appMenu={appMenu} mainMenu={mainMenu} />
+    </AppContext.Provider>
+  </IntlProvider>
+);
+
+const StudioHeaderContext = ({ actionRowContent = null }) => {
+  const headerContextValue = useMemo(() => ({
+    authenticatedUser: {
+      userId: 'abc123',
+      username: 'edX',
+      roles: [],
+      administrator: false,
+    },
+    config: {
+      STUDIO_BASE_URL: process.env.STUDIO_BASE_URL,
+      SITE_NAME: process.env.SITE_NAME,
+      LOGIN_URL: process.env.LOGIN_URL,
+      LOGOUT_URL: process.env.LOGOUT_URL,
+      LOGO_URL: process.env.LOGO_URL,
+    },
+  }), []);
+  return (
+    <IntlProvider locale="en" messages={{}}>
+      <AppContext.Provider
+        value={headerContextValue}
+      >
+        <StudioHeader actionRowContent={actionRowContent} />
+      </AppContext.Provider>
+    </IntlProvider>
+  );
+};
+
+describe('<StudioHeader />', () => {
+  it('renders correctly', () => {
+    const contextValue = {
+      authenticatedUser: {
+        userId: 'abc123',
+        username: 'edX',
+        roles: [],
+        administrator: false,
+      },
+      config: {
+        STUDIO_BASE_URL: process.env.STUDIO_BASE_URL,
+        SITE_NAME: process.env.SITE_NAME,
+        LOGIN_URL: process.env.LOGIN_URL,
+        LOGOUT_URL: process.env.LOGOUT_URL,
+        LOGO_URL: process.env.LOGO_URL,
+      },
+    };
+
+    const component = <StudioHeaderComponent contextValue={contextValue} />;
+
+    const wrapper = TestRenderer.create(component);
+
+    expect(wrapper.toJSON()).toMatchSnapshot();
+  });
+
+  it('renders correctly with optional action row content', () => {
+    const actionRowContent = (
+      <>
+        <Dropdown>
+          <Dropdown.Toggle variant="outline-primary" id="library-header-menu-dropdown">
+            Settings
+          </Dropdown.Toggle>
+          <Dropdown.Menu>
+            <Dropdown.Item as={Link} to="#">Dropdown Item 1</Dropdown.Item>
+            <Dropdown.Item as={Link} to="#">Dropdown Item 2</Dropdown.Item>
+            <Dropdown.Item as={Link} to="#">Dropdown Item 3</Dropdown.Item>
+          </Dropdown.Menu>
+        </Dropdown>
+        <ActionRow.Spacer />
+        <Button
+          variant="tertiary"
+          href="#"
+          rel="noopener noreferrer"
+          target="_blank"
+          title="Help Button"
+        >Help
+        </Button>
+      </>
+    );
+
+    const component = <StudioHeaderContext actionRowContent={actionRowContent} />;
+
+    const wrapper = TestRenderer.create(component);
+
+    expect(wrapper.toJSON()).toMatchSnapshot();
+  });
+});

src/__snapshots__/Header.test.jsx.snap

@@ -4,8 +4,14 @@ exports[`<Header /> renders correctly for anonymous desktop 1`] = `
 <header
   className="site-header-desktop"
 >
+  <a
+    className="nav-skip sr-only sr-only-focusable"
+    href="#main"
+  >
+    Skip to main content
+  </a>
   <div
-    className="container-fluid"
+    className="container-fluid null"
   >
     <div
       className="nav-container position-relative d-flex align-items-center"
@@ -17,7 +23,7 @@ exports[`<Header /> renders correctly for anonymous desktop 1`] = `
         <img
           alt="edX"
           className="d-block"
-          src="icon/mock/path"
+          src="https://edx-cdn.org/v3/default/logo.svg"
         />
       </a>
       <nav
@@ -58,6 +64,12 @@ exports[`<Header /> renders correctly for anonymous mobile 1`] = `
   aria-label="Main"
   className="site-header-mobile d-flex justify-content-between align-items-center shadow sticky-top"
 >
+  <a
+    className="nav-skip sr-only sr-only-focusable"
+    href="#main"
+  >
+    Skip to main content
+  </a>
   <div
     className="w-100 d-flex justify-content-start"
   >
@@ -126,7 +138,7 @@ exports[`<Header /> renders correctly for anonymous mobile 1`] = `
       <img
         alt="edX"
         className="d-block"
-        src="icon/mock/path"
+        src="https://edx-cdn.org/v3/default/logo.svg"
       />
     </a>
   </div>
@@ -159,7 +171,6 @@ exports[`<Header /> renders correctly for anonymous mobile 1`] = `
         >
           <svg
             aria-hidden={true}
-            className="text-muted"
             focusable="false"
             height="24px"
             role="img"
@@ -189,8 +200,14 @@ exports[`<Header /> renders correctly for authenticated desktop 1`] = `
 <header
   className="site-header-desktop"
 >
+  <a
+    className="nav-skip sr-only sr-only-focusable"
+    href="#main"
+  >
+    Skip to main content
+  </a>
   <div
-    className="container-fluid"
+    className="container-fluid null"
   >
     <div
       className="nav-container position-relative d-flex align-items-center"
@@ -202,7 +219,7 @@ exports[`<Header /> renders correctly for authenticated desktop 1`] = `
         <img
           alt="edX"
           className="d-block"
-          src="icon/mock/path"
+          src="https://edx-cdn.org/v3/default/logo.svg"
         />
       </a>
       <nav
@@ -230,7 +247,7 @@ exports[`<Header /> renders correctly for authenticated desktop 1`] = `
             aria-expanded={false}
             aria-haspopup="menu"
             aria-label="Account menu for edX"
-            className="menu-trigger btn btn-light d-inline-flex align-items-center pl-2 pr-3"
+            className="menu-trigger btn btn-outline-primary d-inline-flex align-items-center pl-2 pr-3"
             onClick={[Function]}
           >
             <span
@@ -244,7 +261,6 @@ exports[`<Header /> renders correctly for authenticated desktop 1`] = `
             >
               <svg
                 aria-hidden={true}
-                className="text-muted"
                 focusable="false"
                 height="24px"
                 role="img"
@@ -294,6 +310,12 @@ exports[`<Header /> renders correctly for authenticated mobile 1`] = `
   aria-label="Main"
   className="site-header-mobile d-flex justify-content-between align-items-center shadow sticky-top"
 >
+  <a
+    className="nav-skip sr-only sr-only-focusable"
+    href="#main"
+  >
+    Skip to main content
+  </a>
   <div
     className="w-100 d-flex justify-content-start"
   >
@@ -362,7 +384,7 @@ exports[`<Header /> renders correctly for authenticated mobile 1`] = `
       <img
         alt="edX"
         className="d-block"
-        src="icon/mock/path"
+        src="https://edx-cdn.org/v3/default/logo.svg"
       />
     </a>
   </div>
@@ -395,7 +417,6 @@ exports[`<Header /> renders correctly for authenticated mobile 1`] = `
         >
           <svg
             aria-hidden={true}
-            className="text-muted"
             focusable="false"
             height="24px"
             role="img"

src/__snapshots__/StudioHeader.test.jsx.snap

@@ -0,0 +1,226 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`<StudioHeader /> renders correctly 1`] = `
+<header
+  className="site-header-desktop"
+>
+  <a
+    className="nav-skip sr-only sr-only-focusable"
+    href="#main"
+  >
+    Skip to main content
+  </a>
+  <div
+    className="container-fluid null"
+  >
+    <div
+      className="nav-container position-relative d-flex align-items-center"
+    >
+      <img
+        alt="edX"
+        className="logo"
+        src="https://edx-cdn.org/v3/default/logo.svg"
+      />
+      <div
+        className="pgn__action-row"
+      >
+        <nav
+          aria-label="Secondary"
+          className="nav secondary-menu-container align-items-center ml-auto"
+        >
+          <div
+            className="menu null"
+            onKeyDown={[Function]}
+            onMouseEnter={[Function]}
+            onMouseLeave={[Function]}
+          >
+            <button
+              aria-expanded={false}
+              aria-haspopup="menu"
+              aria-label="Account menu for edX"
+              className="menu-trigger btn btn-outline-primary d-inline-flex align-items-center pl-2 pr-3"
+              onClick={[Function]}
+            >
+              <span
+                className="avatar overflow-hidden d-inline-flex rounded-circle mr-2"
+                style={
+                  Object {
+                    "height": "1.5em",
+                    "width": "1.5em",
+                  }
+                }
+              >
+                <svg
+                  aria-hidden={true}
+                  focusable="false"
+                  height="24px"
+                  role="img"
+                  style={
+                    Object {
+                      "height": "1.5em",
+                      "width": "1.5em",
+                    }
+                  }
+                  version="1.1"
+                  viewBox="0 0 24 24"
+                  width="24px"
+                >
+                  <path
+                    d="M4.10255106,18.1351061 C4.7170266,16.0581859 8.01891846,14.4720277 12,14.4720277 C15.9810815,14.4720277 19.2829734,16.0581859 19.8974489,18.1351061 C21.215206,16.4412566 22,14.3122775 22,12 C22,6.4771525 17.5228475,2 12,2 C6.4771525,2 2,6.4771525 2,12 C2,14.3122775 2.78479405,16.4412566 4.10255106,18.1351061 Z M12,24 C5.372583,24 0,18.627417 0,12 C0,5.372583 5.372583,0 12,0 C18.627417,0 24,5.372583 24,12 C24,18.627417 18.627417,24 12,24 Z M12,13 C9.790861,13 8,11.209139 8,9 C8,6.790861 9.790861,5 12,5 C14.209139,5 16,6.790861 16,9 C16,11.209139 14.209139,13 12,13 Z"
+                    fill="currentColor"
+                  />
+                </svg>
+              </span>
+              edX
+               
+              <svg
+                aria-hidden={true}
+                focusable="false"
+                height="16px"
+                role="img"
+                version="1.1"
+                viewBox="0 0 16 16"
+                width="16px"
+              >
+                <path
+                  d="M7,4 L7,8 L11,8 L11,10 L5,10 L5,4 L7,4 Z"
+                  fill="currentColor"
+                  transform="translate(8.000000, 7.000000) rotate(-45.000000) translate(-8.000000, -7.000000) "
+                />
+              </svg>
+            </button>
+          </div>
+        </nav>
+      </div>
+    </div>
+  </div>
+</header>
+`;
+
+exports[`<StudioHeader /> renders correctly with optional action row content 1`] = `
+<header
+  className="site-header-desktop"
+>
+  <a
+    className="nav-skip sr-only sr-only-focusable"
+    href="#main"
+  >
+    Skip to main content
+  </a>
+  <div
+    className="container-fluid null"
+  >
+    <div
+      className="nav-container position-relative d-flex align-items-center"
+    >
+      <img
+        alt="edX"
+        className="logo"
+        src="https://edx-cdn.org/v3/default/logo.svg"
+      />
+      <div
+        className="pgn__action-row"
+      >
+        <div
+          className="pgn__dropdown pgn__dropdown-light dropdown"
+          data-testid="dropdown"
+        >
+          <button
+            aria-expanded={false}
+            aria-haspopup={true}
+            className="dropdown-toggle btn btn-outline-primary"
+            disabled={false}
+            id="library-header-menu-dropdown"
+            onClick={[Function]}
+            type="button"
+          >
+            Settings
+          </button>
+        </div>
+        <span
+          className="pgn__action-row-spacer"
+        />
+        <a
+          className="btn btn-tertiary"
+          href="#"
+          onClick={[Function]}
+          onKeyDown={[Function]}
+          rel="noopener noreferrer"
+          role="button"
+          target="_blank"
+          title="Help Button"
+        >
+          Help
+        </a>
+        <nav
+          aria-label="Secondary"
+          className="nav secondary-menu-container align-items-center ml-auto"
+        >
+          <div
+            className="menu null"
+            onKeyDown={[Function]}
+            onMouseEnter={[Function]}
+            onMouseLeave={[Function]}
+          >
+            <button
+              aria-expanded={false}
+              aria-haspopup="menu"
+              aria-label="Account menu for edX"
+              className="menu-trigger btn btn-outline-primary d-inline-flex align-items-center pl-2 pr-3"
+              onClick={[Function]}
+            >
+              <span
+                className="avatar overflow-hidden d-inline-flex rounded-circle mr-2"
+                style={
+                  Object {
+                    "height": "1.5em",
+                    "width": "1.5em",
+                  }
+                }
+              >
+                <svg
+                  aria-hidden={true}
+                  focusable="false"
+                  height="24px"
+                  role="img"
+                  style={
+                    Object {
+                      "height": "1.5em",
+                      "width": "1.5em",
+                    }
+                  }
+                  version="1.1"
+                  viewBox="0 0 24 24"
+                  width="24px"
+                >
+                  <path
+                    d="M4.10255106,18.1351061 C4.7170266,16.0581859 8.01891846,14.4720277 12,14.4720277 C15.9810815,14.4720277 19.2829734,16.0581859 19.8974489,18.1351061 C21.215206,16.4412566 22,14.3122775 22,12 C22,6.4771525 17.5228475,2 12,2 C6.4771525,2 2,6.4771525 2,12 C2,14.3122775 2.78479405,16.4412566 4.10255106,18.1351061 Z M12,24 C5.372583,24 0,18.627417 0,12 C0,5.372583 5.372583,0 12,0 C18.627417,0 24,5.372583 24,12 C24,18.627417 18.627417,24 12,24 Z M12,13 C9.790861,13 8,11.209139 8,9 C8,6.790861 9.790861,5 12,5 C14.209139,5 16,6.790861 16,9 C16,11.209139 14.209139,13 12,13 Z"
+                    fill="currentColor"
+                  />
+                </svg>
+              </span>
+              edX
+               
+              <svg
+                aria-hidden={true}
+                focusable="false"
+                height="16px"
+                role="img"
+                version="1.1"
+                viewBox="0 0 16 16"
+                width="16px"
+              >
+                <path
+                  d="M7,4 L7,8 L11,8 L11,10 L5,10 L5,4 L7,4 Z"
+                  fill="currentColor"
+                  transform="translate(8.000000, 7.000000) rotate(-45.000000) translate(-8.000000, -7.000000) "
+                />
+              </svg>
+            </button>
+          </div>
+        </nav>
+      </div>
+    </div>
+  </div>
+</header>
+`;

src/common/time-locale.js

@@ -0,0 +1,18 @@
+export default function timeLocale(number, index) {
+  return [
+    ['just now', 'right now'],
+    ['%ss', 'in %s seconds'],
+    ['1m', 'in 1 minute'],
+    ['%sm', 'in %s minutes'],
+    ['1h', 'in 1 hour'],
+    ['%sh', 'in %s hours'],
+    ['1d', 'in 1 day'],
+    ['%sd', 'in %s days'],
+    ['1w', 'in 1 week'],
+    ['%sw', 'in %s weeks'],
+    ['4w', 'in 1 month'],
+    [`${number * 4}w`, 'in %s months'],
+    ['1y', 'in 1 year'],
+    ['%sy', 'in %s years'],
+  ][index];
+}

src/generic/messages.js

@@ -0,0 +1,16 @@
+import { defineMessages } from '@edx/frontend-platform/i18n';
+
+const messages = defineMessages({
+  registerSentenceCase: {
+    id: 'general.register.sentenceCase',
+    defaultMessage: 'Register',
+    description: 'Text in a button, prompting the user to register.',
+  },
+  signInSentenceCase: {
+    id: 'general.signIn.sentenceCase',
+    defaultMessage: 'Sign in',
+    description: 'Text in a button, prompting the user to log in.',
+  },
+});
+
+export default messages;

src/i18n/index.js

@@ -1,18 +1,28 @@
 import arMessages from './messages/ar.json';
-// no need to import en messages-- they are in the defaultMessage field
-import es419Messages from './messages/es_419.json';
 import frMessages from './messages/fr.json';
-import kokrMessages from './messages/ko_KR.json';
-import ptbrMessages from './messages/pt_BR.json';
+import es419Messages from './messages/es_419.json';
 import zhcnMessages from './messages/zh_CN.json';
+import ptMessages from './messages/pt.json';
+import itMessages from './messages/it.json';
+import ukMessages from './messages/uk.json';
+import deMessages from './messages/de.json';
+import ruMessages from './messages/ru.json';
+import hiMessages from './messages/hi.json';
+import frCAMessages from './messages/fr_CA.json';
+// no need to import en messages-- they are in the defaultMessage field
 
 const messages = {
   ar: arMessages,
   'es-419': es419Messages,
   fr: frMessages,
   'zh-cn': zhcnMessages,
-  'ko-kr': kokrMessages,
-  'pt-br': ptbrMessages,
+  pt: ptMessages,
+  it: itMessages,
+  de: deMessages,
+  hi: hiMessages,
+  'fr-ca': frCAMessages,
+  ru: ruMessages,
+  uk: ukMessages,
 };
 
 export default messages;

src/i18n/messages/ar.json

@@ -1,2 +1,39 @@
 {
-}
+  "general.register.sentenceCase": "التسجيل",
+  "general.signIn.sentenceCase": "تسجيل الدخول",
+  "header.links.courses": "المساقات",
+  "header.links.programs": "البرامج",
+  "header.links.content.search": "اكتشف الجديد",
+  "header.links.schools": "المدارس و الشركاء",
+  "header.user.menu.dashboard": "لوحة المعلومات",
+  "header.user.menu.profile": "الملف الشخصي",
+  "header.user.menu.account.settings": "الحساب",
+  "header.user.menu.order.history": "سجل الطلبيات",
+  "header.user.menu.logout": "تسجيل الخروج",
+  "header.user.menu.login": "تسجيل الدخول",
+  "header.user.menu.register": "التسجيل",
+  "header.user.menu.studio.home": "صفحة الاستوديو الرئيسية",
+  "header.user.menu.studio.maintenance": "الصيانة",
+  "header.label.account.nav": "الحساب",
+  "header.label.account.menu": "قائمة الحساب",
+  "header.label.account.menu.for": "قائمة حساب المستخدم {username}",
+  "header.label.main.nav": "القا|مة الرئيسية",
+  "header.label.main.menu": "القائمة الرئيسية",
+  "header.label.main.header": "الرئيسية",
+  "header.label.secondary.nav": "القائمة الثانوية",
+  "header.label.skip.nav": "التخطي إلى المحتوى الرئيسي",
+  "header.label.app.nav": "تطبيق",
+  "header.menu.dashboard.label": "لوحة المعلومات",
+  "header.help.label": "المساعدة",
+  "header.menu.profile.label": "الملف الشخصي",
+  "header.menu.account.label": "الحساب",
+  "header.menu.orderHistory.label": "سجل الطلبيات",
+  "header.navigation.skipNavLink": "التخطي إلى المحتوى الرئيسي",
+  "header.menu.signOut.label": "تسجيل الخروج",
+  "notification.title": "Notifications",
+  "notification.today.heading": "Last 24 hours",
+  "notification.earlier.heading": "Earlier",
+  "notification.mark.as.read": "Mark all as read",
+  "notification.fullStop": "•",
+  "notification.load.more.notifications": "Load more notifications"
+}

src/i18n/messages/de.json

@@ -0,0 +1,39 @@
+{
+  "general.register.sentenceCase": "Register",
+  "general.signIn.sentenceCase": "Sign in",
+  "header.links.courses": "Courses",
+  "header.links.programs": "Programs",
+  "header.links.content.search": "Discover New",
+  "header.links.schools": "Schools & Partners",
+  "header.user.menu.dashboard": "Dashboard",
+  "header.user.menu.profile": "Profile",
+  "header.user.menu.account.settings": "Account",
+  "header.user.menu.order.history": "Order History",
+  "header.user.menu.logout": "Logout",
+  "header.user.menu.login": "Login",
+  "header.user.menu.register": "Sign Up",
+  "header.user.menu.studio.home": "Studio Home",
+  "header.user.menu.studio.maintenance": "Maintenance",
+  "header.label.account.nav": "Account",
+  "header.label.account.menu": "Account Menu",
+  "header.label.account.menu.for": "Account menu for {username}",
+  "header.label.main.nav": "Main",
+  "header.label.main.menu": "Main Menu",
+  "header.label.main.header": "Main",
+  "header.label.secondary.nav": "Secondary",
+  "header.label.skip.nav": "Skip to main content",
+  "header.label.app.nav": "App",
+  "header.menu.dashboard.label": "Dashboard",
+  "header.help.label": "Help",
+  "header.menu.profile.label": "Profile",
+  "header.menu.account.label": "Account",
+  "header.menu.orderHistory.label": "Order History",
+  "header.navigation.skipNavLink": "Skip to main content.",
+  "header.menu.signOut.label": "Sign Out",
+  "notification.title": "Notifications",
+  "notification.today.heading": "Last 24 hours",
+  "notification.earlier.heading": "Earlier",
+  "notification.mark.as.read": "Mark all as read",
+  "notification.fullStop": "•",
+  "notification.load.more.notifications": "Load more notifications"
+}

src/i18n/messages/es_419.json

@@ -1,2 +1,39 @@
 {
-}
+  "general.register.sentenceCase": "Registrarse",
+  "general.signIn.sentenceCase": "Iniciar sesión",
+  "header.links.courses": "Cursos",
+  "header.links.programs": "Programas",
+  "header.links.content.search": "Encontrar nuevo",
+  "header.links.schools": "Escuelas y Socios",
+  "header.user.menu.dashboard": "Panel de Control",
+  "header.user.menu.profile": "Perfil",
+  "header.user.menu.account.settings": "Cuenta",
+  "header.user.menu.order.history": "Historial de órdenes",
+  "header.user.menu.logout": "Cerrar sesión",
+  "header.user.menu.login": "Login",
+  "header.user.menu.register": "Registrarse",
+  "header.user.menu.studio.home": "Inicio Studio",
+  "header.user.menu.studio.maintenance": "Mantenimiento",
+  "header.label.account.nav": "Cuenta",
+  "header.label.account.menu": "Menú de la cuenta",
+  "header.label.account.menu.for": "Menú de la cuenta para {username}",
+  "header.label.main.nav": "Principal",
+  "header.label.main.menu": "Menú Principal",
+  "header.label.main.header": "Principal",
+  "header.label.secondary.nav": "Secondary",
+  "header.label.skip.nav": "Ir al contenido principal",
+  "header.label.app.nav": "Aplicación",
+  "header.menu.dashboard.label": "Panel de Control",
+  "header.help.label": "Ayuda",
+  "header.menu.profile.label": "Perfil",
+  "header.menu.account.label": "Cuenta",
+  "header.menu.orderHistory.label": "Historial de órdenes",
+  "header.navigation.skipNavLink": "Dirígete al contenido principal.",
+  "header.menu.signOut.label": "Cerrar sesión",
+  "notification.title": "Notificaciones",
+  "notification.today.heading": "Últimas 24 horas",
+  "notification.earlier.heading": "Más temprano",
+  "notification.mark.as.read": "Marcar todo como leído",
+  "notification.fullStop": "•",
+  "notification.load.more.notifications": "Cargar más notificaciones"
+}

src/i18n/messages/fr.json

@@ -1,2 +1,39 @@
 {
-}
+  "general.register.sentenceCase": "S'inscrire",
+  "general.signIn.sentenceCase": "Connectez-vous",
+  "header.links.courses": "Cours",
+  "header.links.programs": "Programmes",
+  "header.links.content.search": "Explorer les cours",
+  "header.links.schools": "Écoles et partenaires",
+  "header.user.menu.dashboard": "Tableau de bord",
+  "header.user.menu.profile": "Profil",
+  "header.user.menu.account.settings": "Compte",
+  "header.user.menu.order.history": "Historique des commandes",
+  "header.user.menu.logout": "Déconnexion",
+  "header.user.menu.login": "Connexion",
+  "header.user.menu.register": "S'inscrire",
+  "header.user.menu.studio.home": "Accueil Studio",
+  "header.user.menu.studio.maintenance": "Maintenance",
+  "header.label.account.nav": "Compte",
+  "header.label.account.menu": "Menu du compte",
+  "header.label.account.menu.for": "Menu du compte pour {username}",
+  "header.label.main.nav": "Principal",
+  "header.label.main.menu": "Menu Principal",
+  "header.label.main.header": "Principal",
+  "header.label.secondary.nav": "Secondaire",
+  "header.label.skip.nav": "Passer au contenu principal",
+  "header.label.app.nav": "Application",
+  "header.menu.dashboard.label": "Tableau de bord",
+  "header.help.label": "Aide",
+  "header.menu.profile.label": "Profil",
+  "header.menu.account.label": "Compte",
+  "header.menu.orderHistory.label": "Historique des commandes",
+  "header.navigation.skipNavLink": "Passer au contenu principal",
+  "header.menu.signOut.label": "Se déconnecter",
+  "notification.title": "Notifications",
+  "notification.today.heading": "Last 24 hours",
+  "notification.earlier.heading": "Earlier",
+  "notification.mark.as.read": "Mark all as read",
+  "notification.fullStop": "•",
+  "notification.load.more.notifications": "Load more notifications"
+}

src/i18n/messages/fr_CA.json

@@ -0,0 +1,39 @@
+{
+  "general.register.sentenceCase": "Inscription",
+  "general.signIn.sentenceCase": "Connexion",
+  "header.links.courses": "Cours",
+  "header.links.programs": "Programmes",
+  "header.links.content.search": "Découvrir les nouveautés",
+  "header.links.schools": "Écoles et Partenaires",
+  "header.user.menu.dashboard": "Tableau de bord",
+  "header.user.menu.profile": "Profil",
+  "header.user.menu.account.settings": "Compte",
+  "header.user.menu.order.history": "Historique des commandes",
+  "header.user.menu.logout": "Déconnexion",
+  "header.user.menu.login": "Connexion",
+  "header.user.menu.register": "S'inscrire",
+  "header.user.menu.studio.home": "Accueil Studio",
+  "header.user.menu.studio.maintenance": "Entretien",
+  "header.label.account.nav": "Compte",
+  "header.label.account.menu": "Menu de compte",
+  "header.label.account.menu.for": "Menu de compte pour {username}",
+  "header.label.main.nav": "Principal",
+  "header.label.main.menu": "Menu principal",
+  "header.label.main.header": "Principal",
+  "header.label.secondary.nav": "Secondaire",
+  "header.label.skip.nav": "Passer au contenu de cette vue",
+  "header.label.app.nav": "Application",
+  "header.menu.dashboard.label": "Tableau de bord",
+  "header.help.label": "Aide",
+  "header.menu.profile.label": "Profil",
+  "header.menu.account.label": "Compte",
+  "header.menu.orderHistory.label": "Historique des commandes",
+  "header.navigation.skipNavLink": "Passer au contenu principal.",
+  "header.menu.signOut.label": "Se déconnecter",
+  "notification.title": "Notifications",
+  "notification.today.heading": "Dernières 24 heures",
+  "notification.earlier.heading": "Plus tôt",
+  "notification.mark.as.read": "tout marquer comme lu",
+  "notification.fullStop": "•",
+  "notification.load.more.notifications": "Charger plus de notifications"
+}

src/i18n/messages/hi.json

@@ -0,0 +1,39 @@
+{
+  "general.register.sentenceCase": "Register",
+  "general.signIn.sentenceCase": "Sign in",
+  "header.links.courses": "Courses",
+  "header.links.programs": "Programs",
+  "header.links.content.search": "Discover New",
+  "header.links.schools": "Schools & Partners",
+  "header.user.menu.dashboard": "Dashboard",
+  "header.user.menu.profile": "Profile",
+  "header.user.menu.account.settings": "Account",
+  "header.user.menu.order.history": "Order History",
+  "header.user.menu.logout": "Logout",
+  "header.user.menu.login": "Login",
+  "header.user.menu.register": "Sign Up",
+  "header.user.menu.studio.home": "Studio Home",
+  "header.user.menu.studio.maintenance": "Maintenance",
+  "header.label.account.nav": "Account",
+  "header.label.account.menu": "Account Menu",
+  "header.label.account.menu.for": "Account menu for {username}",
+  "header.label.main.nav": "Main",
+  "header.label.main.menu": "Main Menu",
+  "header.label.main.header": "Main",
+  "header.label.secondary.nav": "Secondary",
+  "header.label.skip.nav": "Skip to main content",
+  "header.label.app.nav": "App",
+  "header.menu.dashboard.label": "Dashboard",
+  "header.help.label": "Help",
+  "header.menu.profile.label": "Profile",
+  "header.menu.account.label": "Account",
+  "header.menu.orderHistory.label": "Order History",
+  "header.navigation.skipNavLink": "Skip to main content.",
+  "header.menu.signOut.label": "Sign Out",
+  "notification.title": "Notifications",
+  "notification.today.heading": "Last 24 hours",
+  "notification.earlier.heading": "Earlier",
+  "notification.mark.as.read": "Mark all as read",
+  "notification.fullStop": "•",
+  "notification.load.more.notifications": "Load more notifications"
+}

src/i18n/messages/it.json

@@ -0,0 +1,39 @@
+{
+  "general.register.sentenceCase": "Register",
+  "general.signIn.sentenceCase": "Sign in",
+  "header.links.courses": "Courses",
+  "header.links.programs": "Programs",
+  "header.links.content.search": "Discover New",
+  "header.links.schools": "Schools & Partners",
+  "header.user.menu.dashboard": "Dashboard",
+  "header.user.menu.profile": "Profile",
+  "header.user.menu.account.settings": "Account",
+  "header.user.menu.order.history": "Order History",
+  "header.user.menu.logout": "Logout",
+  "header.user.menu.login": "Login",
+  "header.user.menu.register": "Sign Up",
+  "header.user.menu.studio.home": "Studio Home",
+  "header.user.menu.studio.maintenance": "Maintenance",
+  "header.label.account.nav": "Account",
+  "header.label.account.menu": "Account Menu",
+  "header.label.account.menu.for": "Account menu for {username}",
+  "header.label.main.nav": "Main",
+  "header.label.main.menu": "Main Menu",
+  "header.label.main.header": "Main",
+  "header.label.secondary.nav": "Secondary",
+  "header.label.skip.nav": "Skip to main content",
+  "header.label.app.nav": "App",
+  "header.menu.dashboard.label": "Dashboard",
+  "header.help.label": "Help",
+  "header.menu.profile.label": "Profile",
+  "header.menu.account.label": "Account",
+  "header.menu.orderHistory.label": "Order History",
+  "header.navigation.skipNavLink": "Skip to main content.",
+  "header.menu.signOut.label": "Sign Out",
+  "notification.title": "Notifications",
+  "notification.today.heading": "Last 24 hours",
+  "notification.earlier.heading": "Earlier",
+  "notification.mark.as.read": "Mark all as read",
+  "notification.fullStop": "•",
+  "notification.load.more.notifications": "Load more notifications"
+}

src/i18n/messages/ko_KR.json

@@ -1,2 +0,0 @@
-{
-}

src/i18n/messages/pt.json

@@ -0,0 +1,39 @@
+{
+  "general.register.sentenceCase": "Register",
+  "general.signIn.sentenceCase": "Sign in",
+  "header.links.courses": "Courses",
+  "header.links.programs": "Programs",
+  "header.links.content.search": "Discover New",
+  "header.links.schools": "Schools & Partners",
+  "header.user.menu.dashboard": "Dashboard",
+  "header.user.menu.profile": "Profile",
+  "header.user.menu.account.settings": "Account",
+  "header.user.menu.order.history": "Order History",
+  "header.user.menu.logout": "Logout",
+  "header.user.menu.login": "Login",
+  "header.user.menu.register": "Sign Up",
+  "header.user.menu.studio.home": "Studio Home",
+  "header.user.menu.studio.maintenance": "Maintenance",
+  "header.label.account.nav": "Account",
+  "header.label.account.menu": "Account Menu",
+  "header.label.account.menu.for": "Account menu for {username}",
+  "header.label.main.nav": "Main",
+  "header.label.main.menu": "Main Menu",
+  "header.label.main.header": "Main",
+  "header.label.secondary.nav": "Secondary",
+  "header.label.skip.nav": "Skip to main content",
+  "header.label.app.nav": "App",
+  "header.menu.dashboard.label": "Dashboard",
+  "header.help.label": "Help",
+  "header.menu.profile.label": "Profile",
+  "header.menu.account.label": "Account",
+  "header.menu.orderHistory.label": "Order History",
+  "header.navigation.skipNavLink": "Skip to main content.",
+  "header.menu.signOut.label": "Sign Out",
+  "notification.title": "Notifications",
+  "notification.today.heading": "Last 24 hours",
+  "notification.earlier.heading": "Earlier",
+  "notification.mark.as.read": "Mark all as read",
+  "notification.fullStop": "•",
+  "notification.load.more.notifications": "Load more notifications"
+}

src/i18n/messages/pt_BR.json

@@ -1,2 +0,0 @@
-{
-}

src/i18n/messages/ru.json

@@ -0,0 +1,39 @@
+{
+  "general.register.sentenceCase": "Register",
+  "general.signIn.sentenceCase": "Sign in",
+  "header.links.courses": "Courses",
+  "header.links.programs": "Programs",
+  "header.links.content.search": "Discover New",
+  "header.links.schools": "Schools & Partners",
+  "header.user.menu.dashboard": "Dashboard",
+  "header.user.menu.profile": "Profile",
+  "header.user.menu.account.settings": "Account",
+  "header.user.menu.order.history": "Order History",
+  "header.user.menu.logout": "Logout",
+  "header.user.menu.login": "Login",
+  "header.user.menu.register": "Sign Up",
+  "header.user.menu.studio.home": "Studio Home",
+  "header.user.menu.studio.maintenance": "Maintenance",
+  "header.label.account.nav": "Account",
+  "header.label.account.menu": "Account Menu",
+  "header.label.account.menu.for": "Account menu for {username}",
+  "header.label.main.nav": "Main",
+  "header.label.main.menu": "Main Menu",
+  "header.label.main.header": "Main",
+  "header.label.secondary.nav": "Secondary",
+  "header.label.skip.nav": "Skip to main content",
+  "header.label.app.nav": "App",
+  "header.menu.dashboard.label": "Dashboard",
+  "header.help.label": "Help",
+  "header.menu.profile.label": "Profile",
+  "header.menu.account.label": "Account",
+  "header.menu.orderHistory.label": "Order History",
+  "header.navigation.skipNavLink": "Skip to main content.",
+  "header.menu.signOut.label": "Sign Out",
+  "notification.title": "Notifications",
+  "notification.today.heading": "Last 24 hours",
+  "notification.earlier.heading": "Earlier",
+  "notification.mark.as.read": "Mark all as read",
+  "notification.fullStop": "•",
+  "notification.load.more.notifications": "Load more notifications"
+}

src/i18n/messages/uk.json

@@ -0,0 +1,39 @@
+{
+  "general.register.sentenceCase": "Register",
+  "general.signIn.sentenceCase": "Увійти",
+  "header.links.courses": "Курси",
+  "header.links.programs": "Програми",
+  "header.links.content.search": "Discover New",
+  "header.links.schools": "Schools & Partners",
+  "header.user.menu.dashboard": "Dashboard",
+  "header.user.menu.profile": "Profile",
+  "header.user.menu.account.settings": "Account",
+  "header.user.menu.order.history": "Order History",
+  "header.user.menu.logout": "Logout",
+  "header.user.menu.login": "Login",
+  "header.user.menu.register": "Sign Up",
+  "header.user.menu.studio.home": "Studio Home",
+  "header.user.menu.studio.maintenance": "Maintenance",
+  "header.label.account.nav": "Account",
+  "header.label.account.menu": "Меню облікового запису",
+  "header.label.account.menu.for": "Меню облікового запису для {username}",
+  "header.label.main.nav": "Main",
+  "header.label.main.menu": "Main Menu",
+  "header.label.main.header": "Main",
+  "header.label.secondary.nav": "Secondary",
+  "header.label.skip.nav": "Перейти до головного змісту",
+  "header.label.app.nav": "App",
+  "header.menu.dashboard.label": "Dashboard",
+  "header.help.label": "Help",
+  "header.menu.profile.label": "Profile",
+  "header.menu.account.label": "Account",
+  "header.menu.orderHistory.label": "Order History",
+  "header.navigation.skipNavLink": "Перейти до головного змісту.",
+  "header.menu.signOut.label": "Sign Out",
+  "notification.title": "Notifications",
+  "notification.today.heading": "Last 24 hours",
+  "notification.earlier.heading": "Earlier",
+  "notification.mark.as.read": "Mark all as read",
+  "notification.fullStop": "•",
+  "notification.load.more.notifications": "Load more notifications"
+}

src/i18n/messages/zh_CN.json

@@ -1,2 +1,39 @@
 {
-}
+  "general.register.sentenceCase": "Register",
+  "general.signIn.sentenceCase": "Sign in",
+  "header.links.courses": "Courses",
+  "header.links.programs": "Programs",
+  "header.links.content.search": "Discover New",
+  "header.links.schools": "Schools & Partners",
+  "header.user.menu.dashboard": "Dashboard",
+  "header.user.menu.profile": "Profile",
+  "header.user.menu.account.settings": "Account",
+  "header.user.menu.order.history": "Order History",
+  "header.user.menu.logout": "Logout",
+  "header.user.menu.login": "Login",
+  "header.user.menu.register": "Sign Up",
+  "header.user.menu.studio.home": "Studio Home",
+  "header.user.menu.studio.maintenance": "Maintenance",
+  "header.label.account.nav": "Account",
+  "header.label.account.menu": "Account Menu",
+  "header.label.account.menu.for": "Account menu for {username}",
+  "header.label.main.nav": "Main",
+  "header.label.main.menu": "Main Menu",
+  "header.label.main.header": "Main",
+  "header.label.secondary.nav": "Secondary",
+  "header.label.skip.nav": "Skip to main content",
+  "header.label.app.nav": "App",
+  "header.menu.dashboard.label": "Dashboard",
+  "header.help.label": "Help",
+  "header.menu.profile.label": "Profile",
+  "header.menu.account.label": "Account",
+  "header.menu.orderHistory.label": "Order History",
+  "header.navigation.skipNavLink": "Skip to main content.",
+  "header.menu.signOut.label": "Sign Out",
+  "notification.title": "Notifications",
+  "notification.today.heading": "Last 24 hours",
+  "notification.earlier.heading": "Earlier",
+  "notification.mark.as.read": "Mark all as read",
+  "notification.fullStop": "•",
+  "notification.load.more.notifications": "Load more notifications"
+}

src/index.jsx

@@ -1,6 +1,8 @@
 import Header from './Header';
+import LearningHeader from './learning-header/LearningHeader';
 import messages from './i18n/index';
+import StudioHeader from './StudioHeader';
 
-export { messages };
+export { LearningHeader, messages, StudioHeader };
 
 export default Header;

src/index.scss

@@ -1,7 +1,10 @@
 $spacer: 1rem;
 $blue: #007db8;
 $white: #fff;
-
+@import "@edx/brand/paragon/fonts.scss";
+@import "@edx/brand/paragon/variables.scss";
+@import "@edx/paragon/scss/core/core.scss";
+@import "@edx/brand/paragon/overrides.scss";
 @import './Menu/menu.scss';
 
 .dropdown-item a {
@@ -25,6 +28,30 @@ $white: #fff;
   }
 }
 
+.learning-header {
+  min-width: 0;
+
+  .course-title-lockup {
+    min-width: 0;
+
+    span {
+      white-space: nowrap;
+      overflow: hidden;
+      text-overflow: ellipsis;
+      padding-bottom: 0.1rem;
+    }
+  }
+
+  .user-dropdown {
+    .btn {
+      height: 3rem;
+      @media (max-width: -1 + map-get($grid-breakpoints, "sm")) {
+        padding: 0 0.5rem;
+      }
+    }
+  }
+}
+
 .site-header-mobile,
 .site-header-desktop {
   position: relative;
@@ -32,6 +59,8 @@ $white: #fff;
 }
 
 .site-header-mobile {
+  height: 3rem;
+
   .nav-link {
     text-decoration: none;
     cursor: pointer;
@@ -43,7 +72,6 @@ $white: #fff;
 
 
 .site-header-desktop {
-  height: 3.75rem;
   box-shadow: 0 1px 0 0 rgba(0,0,0,.1);
   background: $white;
   .nav-link {
@@ -93,3 +121,135 @@ $white: #fff;
     border-radius: $rounded-pill;
   }
 }
+
+.content {
+  strong {
+    color: #00262B !important;
+    font-weight: 500 !important;
+  }
+}
+
+.font-size-18 {
+  font-size: 18px !important;
+}
+
+.font-size-12 {
+  font-size: 12px;
+}
+
+.font-size-14 {
+  font-size: 14px;
+}
+
+.py-10px {
+  padding-top: 10px;
+  padding-bottom: 10px;
+}
+
+.pb-10px {
+  padding-bottom: 10px;
+}
+
+.line-height-24 {
+  line-height: 24px;
+}
+
+.line-height-20 {
+  line-height: 20px;
+}
+
+.line-height-10 {
+  line-height: 10px !important;
+}
+
+.icon-size-20 {
+  width: 20px !important;
+  height: 20px !important;
+}
+
+.cursor-pointer {
+  cursor: pointer;
+}
+
+.notification-button {
+  width: 36px;
+  height: 36px;
+}
+
+.notification-icon{
+  height: 23.33px !important;
+  width: 23.33px !important;
+}
+
+.notification-badge {
+  position: absolute;
+  margin-top: 18px;
+  margin-left: -21px;
+  border: 2px solid #FFFFFF;
+  font-size: 9px !important;
+}
+
+.popover {
+  max-height: calc(100% - 68px);
+  min-height: 1220px;
+  filter: none;
+  box-shadow: 0px 2px 4px rgba(0, 0, 0, 0.15), 0px 2px 8px rgba(0, 0, 0, 0.15);
+
+  &.medium-screen {
+    min-width: 24.313rem;
+  }
+
+  &.large-screen {
+    min-width: 34.313rem;
+  }
+
+  .dropdown-toggle::after {
+    display: none;
+  }
+
+  .expandable {
+    position: relative !important;
+    margin-left: 4px;
+    padding: 2px 5px;
+    border-radius: 10rem;
+    font-size: 9px;
+  }
+
+  .dropdown-toggle {
+    font-size: 14px;
+    padding-top: 0px !important;
+    padding-bottom: 12px !important;
+
+    div {
+      min-height: 6px !important;
+      min-width: 6px !important;
+    }
+  }
+
+  .dropdown-item {
+    font-size: 14px;
+    font-weight: 500;
+  }
+
+  .notification-content {
+    .notification-item-content {
+      display: -webkit-box;
+      -webkit-line-clamp: 2;
+      -webkit-box-orient: vertical;
+      text-overflow: ellipsis;
+
+      p {
+        margin-bottom: 0px;
+      }
+
+      b {
+        color: #00262B;
+      }
+    }
+
+    .unread {
+      height: 10px;
+      width: 10px;
+    }
+  }
+}

src/learning-header/AnonymousUserMenu.jsx

@@ -0,0 +1,32 @@
+import React from 'react';
+
+import { getConfig } from '@edx/frontend-platform';
+import { getLoginRedirectUrl } from '@edx/frontend-platform/auth';
+import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
+import { Button } from '@edx/paragon';
+
+import genericMessages from '../generic/messages';
+
+const AnonymousUserMenu = ({ intl }) => (
+  <div>
+    <Button
+      className="mr-3"
+      variant="outline-primary"
+      href={`${getConfig().LMS_BASE_URL}/register?next=${encodeURIComponent(global.location.href)}`}
+    >
+      {intl.formatMessage(genericMessages.registerSentenceCase)}
+    </Button>
+    <Button
+      variant="primary"
+      href={`${getLoginRedirectUrl(global.location.href)}`}
+    >
+      {intl.formatMessage(genericMessages.signInSentenceCase)}
+    </Button>
+  </div>
+);
+
+AnonymousUserMenu.propTypes = {
+  intl: intlShape.isRequired,
+};
+
+export default injectIntl(AnonymousUserMenu);

src/learning-header/AuthenticatedUserDropdown.jsx

@@ -0,0 +1,73 @@
+import React, { useEffect } from 'react';
+import PropTypes from 'prop-types';
+
+import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
+import { faUserCircle } from '@fortawesome/free-solid-svg-icons';
+import { getConfig } from '@edx/frontend-platform';
+import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
+import { Dropdown } from '@edx/paragon';
+import { useSelector, useDispatch } from 'react-redux';
+import Notifications from '../Notifications';
+import { selectShowNotificationTray, selectNotificationStatus } from '../Notifications/data/selectors';
+import { fetchAppsNotificationCount } from '../Notifications/data/thunks';
+import { RequestStatus } from '../Notifications/data/slice';
+
+import messages from './messages';
+
+const AuthenticatedUserDropdown = ({ intl, username }) => {
+  const showNotificationsTray = useSelector(selectShowNotificationTray());
+  const notificationStatus = useSelector(selectNotificationStatus());
+  const dispatch = useDispatch();
+
+  useEffect(() => {
+    if (notificationStatus === RequestStatus.IDLE) {
+      dispatch(fetchAppsNotificationCount());
+    }
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const dashboardMenuItem = (
+    <Dropdown.Item href={`${getConfig().LMS_BASE_URL}/dashboard`}>
+      {intl.formatMessage(messages.dashboard)}
+    </Dropdown.Item>
+  );
+
+  return (
+    <>
+      <a className="text-gray-700" href={`${getConfig().SUPPORT_URL}`}>{intl.formatMessage(messages.help)}</a>
+      {showNotificationsTray && <Notifications />}
+      <Dropdown className="user-dropdown ml-3">
+        <Dropdown.Toggle variant="outline-primary">
+          <FontAwesomeIcon icon={faUserCircle} className="d-md-none" size="lg" />
+          <span data-hj-suppress className="d-none d-md-inline">
+            {username}
+          </span>
+        </Dropdown.Toggle>
+        <Dropdown.Menu className="dropdown-menu-right">
+          {dashboardMenuItem}
+          <Dropdown.Item href={`${getConfig().ACCOUNT_PROFILE_URL}/u/${username}`}>
+            {intl.formatMessage(messages.profile)}
+          </Dropdown.Item>
+          <Dropdown.Item href={getConfig().ACCOUNT_SETTINGS_URL}>
+            {intl.formatMessage(messages.account)}
+          </Dropdown.Item>
+          { getConfig().ORDER_HISTORY_URL && (
+            <Dropdown.Item href={getConfig().ORDER_HISTORY_URL}>
+              {intl.formatMessage(messages.orderHistory)}
+            </Dropdown.Item>
+          )}
+          <Dropdown.Item href={getConfig().LOGOUT_URL}>
+            {intl.formatMessage(messages.signOut)}
+          </Dropdown.Item>
+        </Dropdown.Menu>
+      </Dropdown>
+    </>
+  );
+};
+
+AuthenticatedUserDropdown.propTypes = {
+  intl: intlShape.isRequired,
+  username: PropTypes.string.isRequired,
+};
+
+export default injectIntl(AuthenticatedUserDropdown);

src/learning-header/LearningHeader.jsx

@@ -0,0 +1,82 @@
+import React, { useContext } from 'react';
+import PropTypes from 'prop-types';
+import { getConfig } from '@edx/frontend-platform';
+import { injectIntl, intlShape } from '@edx/frontend-platform/i18n';
+import { AppContext, AppProvider } from '@edx/frontend-platform/react';
+
+import AnonymousUserMenu from './AnonymousUserMenu';
+import AuthenticatedUserDropdown from './AuthenticatedUserDropdown';
+import messages from './messages';
+import store from '../store';
+
+const LinkedLogo = ({
+  href,
+  src,
+  alt,
+  ...attributes
+}) => (
+  <a href={href} {...attributes}>
+    <img className="d-block" src={src} alt={alt} />
+  </a>
+);
+
+LinkedLogo.propTypes = {
+  href: PropTypes.string.isRequired,
+  src: PropTypes.string.isRequired,
+  alt: PropTypes.string.isRequired,
+};
+
+const LearningHeader = ({
+  courseOrg, courseNumber, courseTitle, intl, showUserDropdown,
+}) => {
+  const { authenticatedUser } = useContext(AppContext);
+
+  const headerLogo = (
+    <LinkedLogo
+      className="logo"
+      href={`${getConfig().LMS_BASE_URL}/dashboard`}
+      src={getConfig().LOGO_URL}
+      alt={getConfig().SITE_NAME}
+    />
+  );
+
+  return (
+    <AppProvider store={store}>
+      <header className="learning-header">
+        <a className="sr-only sr-only-focusable" href="#main-content">{intl.formatMessage(messages.skipNavLink)}</a>
+        <div className="container-xl py-2 d-flex align-items-center">
+          {headerLogo}
+          <div className="flex-grow-1 course-title-lockup" style={{ lineHeight: 1 }}>
+            <span className="d-block small m-0">{courseOrg} {courseNumber}</span>
+            <span className="d-block m-0 font-weight-bold course-title">{courseTitle}</span>
+          </div>
+          {showUserDropdown && authenticatedUser && (
+            <AuthenticatedUserDropdown
+              username={authenticatedUser.username}
+            />
+          )}
+          {showUserDropdown && !authenticatedUser && (
+            <AnonymousUserMenu />
+          )}
+        </div>
+      </header>
+    </AppProvider>
+  );
+};
+
+LearningHeader.propTypes = {
+  courseOrg: PropTypes.string,
+  courseNumber: PropTypes.string,
+  courseTitle: PropTypes.string,
+  intl: intlShape.isRequired,
+  showUserDropdown: PropTypes.bool,
+};
+
+LearningHeader.defaultProps = {
+  courseOrg: null,
+  courseNumber: null,
+  courseTitle: null,
+  showUserDropdown: true,
+};
+
+export default injectIntl(LearningHeader);

src/learning-header/LearningHeader.test.jsx

@@ -0,0 +1,29 @@
+import React from 'react';
+import {
+  authenticatedUser, initializeMockApp, render, screen,
+} from '../setupTest';
+import { LearningHeader as Header } from '../index';
+
+describe('Header', () => {
+  beforeAll(async () => {
+    // We need to mock AuthService to implicitly use `getAuthenticatedUser` within `AppContext.Provider`.
+    await initializeMockApp();
+  });
+
+  it('displays user button', () => {
+    render(<Header />);
+    expect(screen.getByText(authenticatedUser.username)).toBeInTheDocument();
+  });
+
+  it('displays course data', () => {
+    const courseData = {
+      courseOrg: 'course-org',
+      courseNumber: 'course-number',
+      courseTitle: 'course-title',
+    };
+    render(<Header {...courseData} />);
+
+    expect(screen.getByText(`${courseData.courseOrg} ${courseData.courseNumber}`)).toBeInTheDocument();
+    expect(screen.getByText(courseData.courseTitle)).toBeInTheDocument();
+  });
+});

src/learning-header/messages.js

@@ -0,0 +1,41 @@
+import { defineMessages } from '@edx/frontend-platform/i18n';
+
+const messages = defineMessages({
+  dashboard: {
+    id: 'header.menu.dashboard.label',
+    defaultMessage: 'Dashboard',
+    description: 'The text for the user menu Dashboard navigation link.',
+  },
+  help: {
+    id: 'header.help.label',
+    defaultMessage: 'Help',
+    description: 'The text for the link to the Help Center',
+  },
+  profile: {
+    id: 'header.menu.profile.label',
+    defaultMessage: 'Profile',
+    description: 'The text for the user menu Profile navigation link.',
+  },
+  account: {
+    id: 'header.menu.account.label',
+    defaultMessage: 'Account',
+    description: 'The text for the user menu Account navigation link.',
+  },
+  orderHistory: {
+    id: 'header.menu.orderHistory.label',
+    defaultMessage: 'Order History',
+    description: 'The text for the user menu Order History navigation link.',
+  },
+  skipNavLink: {
+    id: 'header.navigation.skipNavLink',
+    defaultMessage: 'Skip to main content.',
+    description: 'A link used by screen readers to allow users to skip to the main content of the page.',
+  },
+  signOut: {
+    id: 'header.menu.signOut.label',
+    defaultMessage: 'Sign Out',
+    description: 'The label for the user menu Sign Out action.',
+  },
+});
+
+export default messages;

src/setupTest.js

@@ -1,14 +1,29 @@
 /* eslint-disable import/no-extraneous-dependencies */
 
 import Enzyme from 'enzyme';
-import Adapter from 'enzyme-adapter-react-16';
+import React from 'react';
+import PropTypes from 'prop-types';
+import Adapter from '@wojtekmaj/enzyme-adapter-react-17';
+import '@testing-library/jest-dom';
+import '@testing-library/jest-dom/extend-expect';
 import 'babel-polyfill';
+import 'jest-chain';
+import { getConfig, mergeConfig } from '@edx/frontend-platform';
+import { configure as configureLogging } from '@edx/frontend-platform/logging';
+import { configure as configureI18n } from '@edx/frontend-platform/i18n';
+import { configure as configureAuth, MockAuthService } from '@edx/frontend-platform/auth';
+import { render as rtlRender } from '@testing-library/react';
+import { IntlProvider } from 'react-intl';
+import AppProvider from '@edx/frontend-platform/react/AppProvider';
+import appMessages from './i18n';
 
 Enzyme.configure({ adapter: new Adapter() });
 
 // These configuration values are usually set in webpack's EnvironmentPlugin however
 // Jest does not use webpack so we need to set these so for testing
 process.env.ACCESS_TOKEN_COOKIE_NAME = 'edx-jwt-cookie-header-payload';
+process.env.ACCOUNT_PROFILE_URL = 'http://localhost:1995';
+process.env.ACCOUNT_SETTINGS_URL = 'http://localhost:1997';
 process.env.BASE_URL = 'localhost:1995';
 process.env.CREDENTIALS_BASE_URL = 'http://localhost:18150';
 process.env.CSRF_TOKEN_API_PATH = '/csrf/api/v1/token';
@@ -16,10 +31,99 @@ process.env.ECOMMERCE_BASE_URL = 'http://localhost:18130';
 process.env.LANGUAGE_PREFERENCE_COOKIE_NAME = 'openedx-language-preference';
 process.env.LMS_BASE_URL = 'http://localhost:18000';
 process.env.LOGIN_URL = 'http://localhost:18000/login';
-process.env.LOGOUT_URL = 'http://localhost:18000/login';
+process.env.LOGOUT_URL = 'http://localhost:18000/logout';
 process.env.MARKETING_SITE_BASE_URL = 'http://localhost:18000';
 process.env.ORDER_HISTORY_URL = 'localhost:1996/orders';
 process.env.REFRESH_ACCESS_TOKEN_ENDPOINT = 'http://localhost:18000/login_refresh';
 process.env.SEGMENT_KEY = 'segment_whoa';
 process.env.SITE_NAME = 'edX';
 process.env.USER_INFO_COOKIE_NAME = 'edx-user-info';
+process.env.LOGO_URL = 'https://edx-cdn.org/v3/default/logo.svg';
+process.env.LOGO_TRADEMARK_URL = 'https://edx-cdn.org/v3/default/logo-trademark.svg';
+process.env.LOGO_WHITE_URL = 'https://edx-cdn.org/v3/default/logo-white.svg';
+process.env.FAVICON_URL = 'https://edx-cdn.org/v3/default/favicon.ico';
+
+class MockLoggingService {
+  logInfo = jest.fn();
+
+  logError = jest.fn();
+}
+
+export const authenticatedUser = {
+  userId: 'abc123',
+  username: 'Mock User',
+  roles: [],
+  administrator: false,
+};
+
+export function initializeMockApp() {
+  mergeConfig({
+    INSIGHTS_BASE_URL: process.env.INSIGHTS_BASE_URL || null,
+    STUDIO_BASE_URL: process.env.STUDIO_BASE_URL || null,
+    TWITTER_URL: process.env.TWITTER_URL || null,
+    BASE_URL: process.env.BASE_URL || null,
+    LMS_BASE_URL: process.env.LMS_BASE_URL || null,
+    LOGIN_URL: process.env.LOGIN_URL || null,
+    LOGOUT_URL: process.env.LOGOUT_URL || null,
+    REFRESH_ACCESS_TOKEN_ENDPOINT: process.env.REFRESH_ACCESS_TOKEN_ENDPOINT || null,
+    ACCESS_TOKEN_COOKIE_NAME: process.env.ACCESS_TOKEN_COOKIE_NAME || null,
+    CSRF_TOKEN_API_PATH: process.env.CSRF_TOKEN_API_PATH || null,
+    LOGO_URL: process.env.LOGO_URL || null,
+    SITE_NAME: process.env.SITE_NAME || null,
+
+    authenticatedUser: {
+      userId: 'abc123',
+      username: 'Mock User',
+      roles: [],
+      administrator: false,
+    },
+  });
+
+  const loggingService = configureLogging(MockLoggingService, {
+    config: getConfig(),
+  });
+  const authService = configureAuth(MockAuthService, {
+    config: getConfig(),
+    loggingService,
+  });
+
+  // i18n doesn't have a service class to return.
+  configureI18n({
+    config: getConfig(),
+    loggingService,
+    messages: [appMessages],
+  });
+
+  return { loggingService, authService };
+}
+
+function render(
+  ui,
+  {
+    store = null,
+    ...renderOptions
+  } = {},
+) {
+  const Wrapper = ({ children }) => (
+    // eslint-disable-next-line react/jsx-filename-extension
+    <IntlProvider locale="en">
+      <AppProvider store={store}>
+        {children}
+      </AppProvider>
+    </IntlProvider>
+  );
+
+  Wrapper.propTypes = {
+    children: PropTypes.node.isRequired,
+  };
+
+  return rtlRender(ui, { wrapper: Wrapper, ...renderOptions });
+}
+
+// Re-export everything.
+export * from '@testing-library/react';
+
+// Override `render` method.
+export {
+  render,
+};

src/store.js

@@ -0,0 +1,16 @@
+import { configureStore } from '@reduxjs/toolkit';
+
+import { notificationsReducer } from './Notifications/data';
+
+export function initializeStore(preloadedState = undefined) {
+  return configureStore({
+    reducer: {
+      notifications: notificationsReducer,
+    },
+    preloadedState,
+  });
+}
+
+const store = initializeStore();
+
+export default store;

src/test-utils.js

@@ -0,0 +1,6 @@
+const executeThunk = async (thunk, dispatch, getState) => {
+  await thunk(dispatch, getState);
+  await new Promise(setImmediate);
+};
+
+export default executeThunk;

webpack.dev.config.js

@@ -7,4 +7,9 @@ module.exports = createConfig('webpack-dev', {
     path: path.resolve(__dirname, 'example/dist'),
     publicPath: '/',
   },
+  resolve: {
+    alias: {
+      '@edx/frontend-component-header': path.resolve(__dirname, 'src'),
+    },
+  },
 });