🚀 feat: Banner (#3952)

* feat: Add banner schema and model

* feat: Add optional JwtAuth

To handle the conditional logic with and without authentication within the model.

* feat: Add an endpoint to retrieve a banner

* feat: Add implementation for client to use banner and access API

* feat: Display a banner on UI

* feat: Script for updating and deleting banners

* style: Update banner style

* fix: Adjust the height when the banner is displayed

* fix: failed specs

api/models/Banner.js

@@ -0,0 +1,27 @@
+const Banner = require('./schema/banner');
+const logger = require('~/config/winston');
+/**
+ * Retrieves the current active banner.
+ * @returns {Promise<Object|null>} The active banner object or null if no active banner is found.
+ */
+const getBanner = async (user) => {
+  try {
+    const now = new Date();
+    const banner = await Banner.findOne({
+      displayFrom: { $lte: now },
+      $or: [{ displayTo: { $gte: now } }, { displayTo: null }],
+      type: 'banner',
+    }).lean();
+
+    if (!banner || banner.isPublic || user) {
+      return banner;
+    }
+
+    return null;
+  } catch (error) {
+    logger.error('[getBanners] Error getting banners', error);
+    throw new Error('Error getting banners');
+  }
+};
+
+module.exports = { getBanner };