feat: add sitewidebanner to publisher

.env

@@ -16,3 +16,4 @@ NEW_RELIC_APP_ID=null
 NEW_RELIC_LICENSE_KEY=null
 APP_ID=''
 MFE_CONFIG_API_URL=''
+SITEWIDE_BANNER_CONTENT = ""

.env.development

@@ -21,3 +21,4 @@ ADDITIONAL_METADATA_REQUIRED_FIELDS='{}'
 IS_NEW_SLUG_FORMAT_ENABLED='false'
 MARKETING_SITE_PREVIEW_URL_ROOT=''
 COURSE_URL_SLUGS_PATTERN = '{}'
+SITEWIDE_BANNER_CONTENT = ""

src/components/SitewideBanner/SitewideBanner.test.jsx

@@ -0,0 +1,50 @@
+import React from "react";
+import { shallow } from "enzyme";
+import Cookies from "js-cookie";
+import { Alert } from "react-bootstrap";
+import SitewideBanner from "./index";
+
+describe("SitewideBanner", () => {
+  it("renders correctly when visible", () => {
+    const wrapper = shallow(
+      <SitewideBanner
+        message="Dummy Message"
+        type="success"
+        dismissible={true}
+        cookieName="bannerCookie"
+        cookieExpiryDays={7}
+      />
+    );
+
+    expect(wrapper.find(Alert).props().variant).toBe("success");
+    expect(wrapper.find(Alert).props().dismissible).toBe(true);
+    const alertContent = wrapper.find(Alert).dive().find("div").first().html();
+    expect(alertContent).toContain("Dummy Message");
+  });
+
+  it("calls handleDismiss and sets cookie when dismissed", () => {
+    const setCookieMock = jest.spyOn(Cookies, "set");
+    const wrapper = shallow(
+      <SitewideBanner
+        message="This is a test message"
+        type="warning"
+        dismissible={true}
+        cookieName="bannerCookie"
+        cookieExpiryDays={7}
+      />
+    );
+    wrapper.find(Alert).simulate("close");
+    expect(wrapper.isEmptyRender()).toBe(true);
+    expect(setCookieMock).toHaveBeenCalledWith("bannerCookie", "true", {
+      expires: 7,
+    });
+    setCookieMock.mockRestore();
+  });
+
+  it("handles non-dismissible banner correctly", () => {
+    const wrapper = shallow(
+      <SitewideBanner message="Non-dismissible message" dismissible={false} />
+    );
+    expect(wrapper.find(Alert).props().dismissible).toBe(false);
+  });
+});

src/components/SitewideBanner/index.jsx

@@ -0,0 +1,55 @@
+import React, { useState, useEffect } from "react";
+import PropTypes from "prop-types";
+import Cookies from "js-cookie";
+import { Alert, Container } from "react-bootstrap";
+
+const SitewideBanner = ({ message, type, dismissible, cookieName, cookieExpiryDays }) => {
+  const [isVisible, setIsVisible] = useState(true);
+
+  useEffect(() => {
+    if (cookieName && Cookies.get(cookieName)) {
+      setIsVisible(false);
+    }
+  }, [cookieName]);
+
+  const handleDismiss = () => {
+    setIsVisible(false);
+    if (cookieName) {
+      Cookies.set(cookieName, "true", { expires: cookieExpiryDays });
+    }
+  };
+
+  if (!isVisible) {
+    return null;
+  }
+
+  return (
+    <Alert
+      variant={type}
+      dismissible={dismissible}
+      onClose={handleDismiss}
+      className="mb-4"
+    >
+      <Container>
+        <div dangerouslySetInnerHTML={{ __html: message }} />
+      </Container>
+    </Alert>
+  );
+};
+
+SitewideBanner.propTypes = {
+  message: PropTypes.string.isRequired,
+  type: PropTypes.oneOf(["primary", "success", "warning", "danger", "info", "secondary", "light", "dark"]),
+  dismissible: PropTypes.bool,
+  cookieName: PropTypes.string,
+  cookieExpiryDays: PropTypes.number,
+};
+
+SitewideBanner.defaultProps = {
+  type: "info",
+  dismissible: false,
+  cookieName: null,
+  cookieExpiryDays: 7,
+};
+
+export default SitewideBanner;

src/containers/MainApp/index.jsx

@@ -15,10 +15,19 @@ import EditStaffer from '../EditStaffer';
 import CreateCollaborator from '../CreateCollaborator';
 import EditCollaborator from '../EditCollaborator';
 import EditCourse from '../EditCourse';
+import SitewideBanner from '../../components/SitewideBanner';
+
 
 const MainApp = () => (
   <div>
     <Header />
+    <SitewideBanner
+      message={process.env.SITEWIDE_BANNER_CONTENT || ''}
+      type="primary"
+      dismissible
+      cookieName="sitewidebannerDismissed"
+      cookieExpiryDays={30}
+    />
     <main>
       <Routes>
         <Route path="/course-runs/:courseRunKey" element={<CourseRunRedirectComponent />} />