feat: Introduced Learning Course Header in Header MFE.

package.json

@@ -49,12 +49,18 @@
     "react-test-renderer": "16.14.0",
     "reactifex": "1.1.1",
     "redux": "4.1.2",
-    "redux-saga": "1.1.3"
+    "redux-saga": "1.1.3",
+    "@testing-library/react": "10.3.0"
   },
   "dependencies": {
     "babel-polyfill": "6.26.0",
     "react-responsive": "8.2.0",
-    "react-transition-group": "4.4.2"
+    "react-transition-group": "4.4.2",
+    "@fortawesome/fontawesome-svg-core": "1.2.34",
+    "@fortawesome/free-brands-svg-icons": "5.13.1",
+    "@fortawesome/free-regular-svg-icons": "5.13.1",
+    "@fortawesome/free-solid-svg-icons": "5.13.1",
+    "@fortawesome/react-fontawesome": "^0.1.14"
   },
   "peerDependencies": {
     "@edx/frontend-platform": "^1.8.0",

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/index.jsx

@@ -1,6 +1,7 @@
 import Header from './Header';
+import LearningHeader from './learning-header/LearningHeader';
 import messages from './i18n/index';
 
-export { messages };
+export { LearningHeader, messages };
 
 export default Header;

src/index.scss

@@ -25,6 +25,30 @@ $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;

src/learning-header/AnonymousUserMenu.jsx

@@ -0,0 +1,34 @@
+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';
+
+function AnonymousUserMenu({ intl }) {
+  return (
+    <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 +1,55 @@
+import React 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 messages from './messages';
+
+function AuthenticatedUserDropdown({ intl, username }) {
+  const dashboardMenuItem = (
+    <Dropdown.Item href={`${getConfig().LMS_BASE_URL}/dashboard`}>
+      {intl.formatMessage(messages.dashboard)}
+    </Dropdown.Item>
+  );
+
+  return (
+    <>
+      <a className="text-gray-700 mr-3" href={`${getConfig().SUPPORT_URL}`}>{intl.formatMessage(messages.help)}</a>
+      <Dropdown className="user-dropdown">
+        <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={`${getConfig().LMS_BASE_URL}/u/${username}`}>
+            {intl.formatMessage(messages.profile)}
+          </Dropdown.Item>
+          <Dropdown.Item href={`${getConfig().LMS_BASE_URL}/account/settings`}>
+            {intl.formatMessage(messages.account)}
+          </Dropdown.Item>
+          <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 +1,81 @@
+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 } from '@edx/frontend-platform/react';
+
+import AnonymousUserMenu from './AnonymousUserMenu';
+import AuthenticatedUserDropdown from './AuthenticatedUserDropdown';
+import messages from './messages';
+
+function LinkedLogo({
+  href,
+  src,
+  alt,
+  ...attributes
+}) {
+  return (
+    <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,
+};
+
+function 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 (
+    <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>
+  );
+}
+
+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.getByRole('button')).toHaveTextContent(authenticatedUser.username);
+  });
+
+  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

@@ -3,6 +3,10 @@
 import Enzyme from 'enzyme';
 import Adapter from 'enzyme-adapter-react-16';
 import 'babel-polyfill';
+import { mergeConfig } from '@edx/frontend-platform';
+import { render as rtlRender } from '@testing-library/react';
+import { IntlProvider } from 'react-intl';
+import AppProvider from '@edx/frontend-platform/react/AppProvider';
 
 Enzyme.configure({ adapter: new Adapter() });
 
@@ -27,3 +31,57 @@ 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';
+
+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,
+      authenticatedUser: {
+        userId: 'abc123',
+        username: 'Mock User',
+        roles: [],
+        administrator: false,
+      },
+    });
+}
+
+function render(
+    ui,
+    {
+      store = null,
+      ...renderOptions
+    } = {},
+  ) {
+    function Wrapper({ children }) {
+      return (
+        // 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,
+  };