fix(deps): update dependency @edx/paragon to v20.45.0

feat: binded show notification tray status with the backend api

example/index.js

@@ -4,7 +4,8 @@ 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 Header from '@edx/frontend-component-header';
+import { LearningHeader as Header } from '@edx/frontend-component-header';
 
 import './index.scss';
 

package-lock.json

@@ -9,23 +9,31 @@
       "version": "1.0.0-semantically-released",
       "license": "AGPL-3.0",
       "dependencies": {
-        "@edx/paragon": "20.44.0",
+        "@edx/paragon": "20.45.0",
         "@fortawesome/fontawesome-svg-core": "6.3.0",
         "@fortawesome/free-brands-svg-icons": "6.3.0",
         "@fortawesome/free-regular-svg-icons": "6.3.0",
         "@fortawesome/free-solid-svg-icons": "6.3.0",
         "@fortawesome/react-fontawesome": "^0.2.0",
+        "@reduxjs/toolkit": "1.9.5",
+        "axios-mock-adapter": "1.21.5",
         "babel-polyfill": "6.26.0",
+        "classnames": "2.3.2",
+        "lodash": "4.17.21",
+        "react-redux": "7.2.9",
         "react-responsive": "8.2.0",
-        "react-transition-group": "4.4.5"
+        "react-router-dom": "5.3.4",
+        "react-transition-group": "4.4.5",
+        "rosie": "2.1.0",
+        "timeago.js": "4.0.2"
       },
       "devDependencies": {
         "@edx/brand": "npm:@edx/brand-openedx@1.2.0",
         "@edx/browserslist-config": "^1.1.1",
-        "@edx/frontend-build": "12.8.51",
+        "@edx/frontend-build": "12.8.57",
         "@edx/frontend-platform": "4.5.1",
         "@edx/reactifex": "^2.1.1",
-        "@testing-library/dom": "9.3.0",
+        "@testing-library/dom": "9.3.1",
         "@testing-library/jest-dom": "5.16.5",
         "@testing-library/react": "10.4.9",
         "enzyme": "3.11.0",
@@ -37,7 +45,6 @@
         "react": "16.14.0",
         "react-dom": "16.14.0",
         "react-redux": "7.2.9",
-        "react-router-dom": "5.3.4",
         "react-test-renderer": "16.14.0",
         "redux": "4.2.1",
         "redux-saga": "1.2.3"
@@ -2144,9 +2151,9 @@
       }
     },
     "node_modules/@edx/frontend-build": {
-      "version": "12.8.51",
+      "version": "12.8.57",
-      "resolved": "https://registry.npmjs.org/@edx/frontend-build/-/frontend-build-12.8.51.tgz",
+      "resolved": "https://registry.npmjs.org/@edx/frontend-build/-/frontend-build-12.8.57.tgz",
-      "integrity": "sha512-UsOJ7kN/ECxTDxGYbigGOLQnNtTSmwXqJTed3AUh292U3LEobqho8/C9z2j18xyXhbLY8TJlCWrPkhPFtqFOug==",
+      "integrity": "sha512-mbWyGtF351pKs2/wtN0B16xor5ZowDw70ddBPqE5sasbIlWQw82Yx8Wie6vBjDAweCNDffOCKuIycYJYilWO8Q==",
       "dev": true,
       "dependencies": {
         "@babel/cli": "7.22.5",
@@ -2182,7 +2189,7 @@
         "file-loader": "6.2.0",
         "html-webpack-plugin": "5.5.3",
         "identity-obj-proxy": "3.0.0",
-        "image-minimizer-webpack-plugin": "3.8.2",
+        "image-minimizer-webpack-plugin": "3.8.3",
         "jest": "26.6.3",
         "mini-css-extract-plugin": "1.6.2",
         "postcss": "8.4.24",
@@ -2192,7 +2199,7 @@
         "react-dev-utils": "12.0.1",
         "react-refresh": "0.14.0",
         "resolve-url-loader": "5.0.0",
-        "sass": "1.63.3",
+        "sass": "1.63.6",
         "sass-loader": "13.3.2",
         "sharp": "^0.32.0",
         "source-map-loader": "^4.0.1",
@@ -2944,9 +2951,9 @@
       }
     },
     "node_modules/@edx/frontend-build/node_modules/jest-snapshot/node_modules/semver": {
-      "version": "7.5.1",
+      "version": "7.5.3",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.1.tgz",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.3.tgz",
-      "integrity": "sha512-Wvss5ivl8TMRZXXESstBA4uR5iXgEN/VC5/sOcuXdVLzcdkz4HWetIoRfG5gb5X+ij/G9rw9YoGn3QoQ8OCSpw==",
+      "integrity": "sha512-QBlUtyVk/5EeHbi7X0fw6liDZc7BBmEaSYn01fMU1OUYbf6GPsbTtd8WmnqbI20SeycoHSeiybkE/q1Q+qlThQ==",
       "dev": true,
       "dependencies": {
         "lru-cache": "^6.0.0"
@@ -3248,9 +3255,9 @@
       }
     },
     "node_modules/@edx/paragon": {
-      "version": "20.44.0",
+      "version": "20.45.0",
-      "resolved": "https://registry.npmjs.org/@edx/paragon/-/paragon-20.44.0.tgz",
+      "resolved": "https://registry.npmjs.org/@edx/paragon/-/paragon-20.45.0.tgz",
-      "integrity": "sha512-C1uC3RaRmlFANtHebFdZzVDM08vgFJRnHE3u97ix07e0ACSQDbVNoZ2H7JgBy8nqHz2JWGHPnvtpvPf5DAZsZQ==",
+      "integrity": "sha512-9lHcnSJ36sQ+bsYFhydf/Pvp3Bo5N3go8R3ORPTNtvYnwiKSfjlv11QpURC/xHobXsT2eYHiwl2gNmq1yP09BA==",
       "dependencies": {
         "@fortawesome/fontawesome-svg-core": "^6.1.1",
         "@fortawesome/react-fontawesome": "^0.1.18",
@@ -3334,9 +3341,9 @@
       }
     },
     "node_modules/@edx/reactifex": {
-      "version": "2.1.1",
+      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/@edx/reactifex/-/reactifex-2.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/@edx/reactifex/-/reactifex-2.2.0.tgz",
-      "integrity": "sha512-A/DfCPsNNRuWhhWCquInlfG6Pi//qcxAi0P2jY/UeOVAHoOLkA3L328UtHEuoZbncXT2E1H1EDlpfNrovo/nng==",
+      "integrity": "sha512-vyGDtx3BwCr6Gjbm4y6gJ8Bzc2TOSNBlBa2hMerz59HoXaot14MihxxiDU+JDNybGLLcKDBiK511bOi/77i1lw==",
       "dev": true,
       "dependencies": {
         "axios": "^0.21.1",
@@ -3370,9 +3377,9 @@
       }
     },
     "node_modules/@edx/reactifex/node_modules/yargs": {
-      "version": "17.7.1",
+      "version": "17.7.2",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-17.7.1.tgz",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-17.7.2.tgz",
-      "integrity": "sha512-cwiTb08Xuv5fqF4AovYacTFNxk62th7LKJ6BL9IGUpTJrWoU7/7WdQGTP2SjKf1dUNBGzDd28p/Yfs/GI6JrLw==",
+      "integrity": "sha512-7dSzzRQ++CKnNI/krKnYRV7JKKPUXMEh61soaHKg9mrWEhzFWhFnxPxGl+69cD1Ou63C13NUPCnmIcrvqCuM6w==",
       "dev": true,
       "dependencies": {
         "cliui": "^8.0.1",
@@ -5807,6 +5814,29 @@
       "integrity": "sha512-1dgmkh+3so0+LlBWRhGA33ua4MYr7tUOj+a9Si28vUi0IUFNbff1T3sgpeDJI/LaC75bBYnQ0A3wXjn0OrRNBA==",
       "dev": true
     },
+    "node_modules/@reduxjs/toolkit": {
+      "version": "1.9.5",
+      "resolved": "https://registry.npmjs.org/@reduxjs/toolkit/-/toolkit-1.9.5.tgz",
+      "integrity": "sha512-Rt97jHmfTeaxL4swLRNPD/zV4OxTes4la07Xc4hetpUW/vc75t5m1ANyxG6ymnEQ2FsLQsoMlYB2vV1sO3m8tQ==",
+      "dependencies": {
+        "immer": "^9.0.21",
+        "redux": "^4.2.1",
+        "redux-thunk": "^2.4.2",
+        "reselect": "^4.1.8"
+      },
+      "peerDependencies": {
+        "react": "^16.9.0 || ^17.0.0 || ^18",
+        "react-redux": "^7.2.1 || ^8.0.2"
+      },
+      "peerDependenciesMeta": {
+        "react": {
+          "optional": true
+        },
+        "react-redux": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@restart/context": {
       "version": "2.1.4",
       "resolved": "https://registry.npmjs.org/@restart/context/-/context-2.1.4.tgz",
@@ -6108,15 +6138,15 @@
       }
     },
     "node_modules/@testing-library/dom": {
-      "version": "9.3.0",
+      "version": "9.3.1",
-      "resolved": "https://registry.npmjs.org/@testing-library/dom/-/dom-9.3.0.tgz",
+      "resolved": "https://registry.npmjs.org/@testing-library/dom/-/dom-9.3.1.tgz",
-      "integrity": "sha512-Dffe68pGwI6WlLRYR2I0piIkyole9cSBH5jGQKCGMRpHW5RHCqAUaqc2Kv0tUyd4dU4DLPKhJIjyKOnjv4tuUw==",
+      "integrity": "sha512-0DGPd9AR3+iDTjGoMpxIkAsUihHZ3Ai6CneU6bRRrffXMgzCdlNk43jTrD2/5LT6CBb3MWTP8v510JzYtahD2w==",
       "dev": true,
       "dependencies": {
         "@babel/code-frame": "^7.10.4",
         "@babel/runtime": "^7.12.5",
         "@types/aria-query": "^5.0.1",
-        "aria-query": "^5.0.0",
+        "aria-query": "5.1.3",
         "chalk": "^4.1.0",
         "dom-accessibility-api": "^0.5.9",
         "lz-string": "^1.5.0",
@@ -6785,7 +6815,7 @@
       "version": "7.1.25",
       "resolved": "https://registry.npmjs.org/@types/react-redux/-/react-redux-7.1.25.tgz",
       "integrity": "sha512-bAGh4e+w5D8dajd6InASVIyCo4pZLJ66oLb80F9OBLO1gKESbZcRCJpTT6uLXX+HAB57zw1WTdwJdAsewuTweg==",
-      "dev": true,
+      "devOptional": true,
       "dependencies": {
         "@types/hoist-non-react-statics": "^3.3.0",
         "@types/react": "*",
@@ -7681,8 +7711,7 @@
     "node_modules/asynckit": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
-      "integrity": "sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q==",
+      "integrity": "sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q=="
-      "dev": true
     },
     "node_modules/at-least-node": {
       "version": "1.0.0",
@@ -7771,7 +7800,6 @@
       "version": "0.27.2",
       "resolved": "https://registry.npmjs.org/axios/-/axios-0.27.2.tgz",
       "integrity": "sha512-t+yRIyySRTp/wua5xEr+z1q60QmLq8ABsS5O9Me1AsE5dfKqgnCFzwiCZZ/cGNd1lq4/7akDWMxdhVlucjmnOQ==",
-      "dev": true,
       "dependencies": {
         "follow-redirects": "^1.14.9",
         "form-data": "^4.0.0"
@@ -7791,6 +7819,40 @@
         "url": "https://github.com/ArthurFiorette/axios-cache-interceptor?sponsor=1"
       }
     },
+    "node_modules/axios-mock-adapter": {
+      "version": "1.21.5",
+      "resolved": "https://registry.npmjs.org/axios-mock-adapter/-/axios-mock-adapter-1.21.5.tgz",
+      "integrity": "sha512-5NI1V/VK+8+JeTF8niqOowuysA4b8mGzdlMN/QnTnoXbYh4HZSNiopsDclN2g/m85+G++IrEtUdZaQ3GnaMsSA==",
+      "dependencies": {
+        "fast-deep-equal": "^3.1.3",
+        "is-buffer": "^2.0.5"
+      },
+      "peerDependencies": {
+        "axios": ">= 0.17.0"
+      }
+    },
+    "node_modules/axios-mock-adapter/node_modules/is-buffer": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-2.0.5.tgz",
+      "integrity": "sha512-i2R6zNFDwgEHJyQUtJEk0XFi1i0dPFn/oqjK3/vPCcDeJvW5NQ83V8QbicfF1SupOaB0h8ntgBC2YiE7dfyctQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "engines": {
+        "node": ">=4"
+      }
+    },
     "node_modules/axobject-query": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/axobject-query/-/axobject-query-3.1.1.tgz",
@@ -9138,7 +9200,6 @@
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-      "dev": true,
       "dependencies": {
         "delayed-stream": "~1.0.0"
       },
@@ -9868,7 +9929,6 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
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-      "dev": true,
       "engines": {
         "node": ">=0.4.0"
       }
@@ -11746,8 +11806,7 @@
     "node_modules/fast-deep-equal": {
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-      "dev": true
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     "node_modules/fast-defer": {
       "version": "1.1.7",
@@ -12024,7 +12083,6 @@
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-      "dev": true,
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@@ -12255,7 +12313,6 @@
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       "resolved": "https://registry.npmjs.org/form-data/-/form-data-4.0.0.tgz",
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-      "dev": true,
       "dependencies": {
         "asynckit": "^0.4.0",
         "combined-stream": "^1.0.8",
@@ -12841,7 +12898,6 @@
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-      "dev": true,
       "dependencies": {
         "@babel/runtime": "^7.1.2",
         "loose-envify": "^1.2.0",
@@ -13200,12 +13256,12 @@
       }
     },
     "node_modules/image-minimizer-webpack-plugin": {
-      "version": "3.8.2",
+      "version": "3.8.3",
-      "resolved": "https://registry.npmjs.org/image-minimizer-webpack-plugin/-/image-minimizer-webpack-plugin-3.8.2.tgz",
+      "resolved": "https://registry.npmjs.org/image-minimizer-webpack-plugin/-/image-minimizer-webpack-plugin-3.8.3.tgz",
-      "integrity": "sha512-l3nDq/c15y4ViTPtICG6lbFp77SoycSnR1hT/n3ER76uol//OpRptCDl7U1qiDSSEy2AcqPD1T7isRQ8TK27Cw==",
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       "dev": true,
       "dependencies": {
-        "schema-utils": "^4.0.0",
+        "schema-utils": "^4.2.0",
         "serialize-javascript": "^6.0.1"
       },
       "engines": {
@@ -13268,9 +13324,9 @@
       "dev": true
     },
     "node_modules/image-minimizer-webpack-plugin/node_modules/schema-utils": {
-      "version": "4.0.1",
+      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-4.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-4.2.0.tgz",
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@@ -13296,7 +13352,6 @@
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-      "dev": true,
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/immer"
@@ -18918,8 +18973,7 @@
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-      "dev": true
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     "node_modules/lodash.camelcase": {
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@@ -19178,7 +19232,6 @@
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-      "dev": true,
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@@ -19187,7 +19240,6 @@
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-      "dev": true,
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@@ -20206,7 +20258,6 @@
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-      "dev": true,
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@@ -20214,8 +20265,7 @@
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-      "dev": true
     },
     "node_modules/path-type": {
       "version": "4.0.0",
@@ -21825,7 +21875,7 @@
       "version": "17.0.2",
       "resolved": "https://registry.npmjs.org/react-is/-/react-is-17.0.2.tgz",
       "integrity": "sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w==",
-      "dev": true
+      "devOptional": true
     },
     "node_modules/react-lifecycles-compat": {
       "version": "3.0.4",
@@ -21882,7 +21932,7 @@
       "version": "7.2.9",
       "resolved": "https://registry.npmjs.org/react-redux/-/react-redux-7.2.9.tgz",
       "integrity": "sha512-Gx4L3uM182jEEayZfRbI/G11ZpYdNAnBs70lFVMNdHJI76XYtR+7m0MN+eAs7UHBPhWXcnFPaS+9owSCJQHNpQ==",
-      "dev": true,
+      "devOptional": true,
       "dependencies": {
         "@babel/runtime": "^7.15.4",
         "@types/react-redux": "^7.1.20",
@@ -21978,7 +22028,6 @@
       "version": "5.3.4",
       "resolved": "https://registry.npmjs.org/react-router/-/react-router-5.3.4.tgz",
       "integrity": "sha512-Ys9K+ppnJah3QuaRiLxk+jDWOR1MekYQrlytiXxC1RyfbdsZkS5pvKAzCCr031xHixZwpnsYNT5xysdFHQaYsA==",
-      "dev": true,
       "dependencies": {
         "@babel/runtime": "^7.12.13",
         "history": "^4.9.0",
@@ -21998,7 +22047,6 @@
       "version": "5.3.4",
       "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-5.3.4.tgz",
       "integrity": "sha512-m4EqFMHv/Ih4kpcBCONHbkT68KoAeHN4p3lAGoNryfHi0dMy0kCzEZakiKRsvg5wHZ/JLrLW8o8KomWiz/qbYQ==",
-      "dev": true,
       "dependencies": {
         "@babel/runtime": "^7.12.13",
         "history": "^4.9.0",
@@ -22015,8 +22063,7 @@
     "node_modules/react-router/node_modules/react-is": {
       "version": "16.13.1",
       "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.13.1.tgz",
-      "integrity": "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==",
+      "integrity": "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ=="
-      "dev": true
     },
     "node_modules/react-style-singleton": {
       "version": "2.2.1",
@@ -22270,7 +22317,6 @@
       "version": "4.2.1",
       "resolved": "https://registry.npmjs.org/redux/-/redux-4.2.1.tgz",
       "integrity": "sha512-LAUYz4lc+Do8/g7aeRa8JkyDErK6ekstQaqWQrNRW//MY1TvCEpMtpTWvlQ+FPbWCx+Xixu/6SHt5N0HR+SB4w==",
-      "dev": true,
       "dependencies": {
         "@babel/runtime": "^7.9.2"
       }
@@ -22284,6 +22330,14 @@
         "@redux-saga/core": "^1.2.3"
       }
     },
+    "node_modules/redux-thunk": {
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/redux-thunk/-/redux-thunk-2.4.2.tgz",
+      "integrity": "sha512-+P3TjtnP0k/FEjcBL5FZpoovtvrTNT/UXd4/sluaSyrURlSlhLSzEdfsTBW7WsKB6yPvgd7q/iZPICFjW4o57Q==",
+      "peerDependencies": {
+        "redux": "^4"
+      }
+    },
     "node_modules/reflect.ownkeys": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/reflect.ownkeys/-/reflect.ownkeys-0.2.0.tgz",
@@ -22472,6 +22526,11 @@
       "integrity": "sha512-KigOCHcocU3XODJxsu8i/j8T9tzT4adHiecwORRQ0ZZFcp7ahwXuRU1m+yuO90C5ZUyGeGfocHDI14M3L3yDAQ==",
       "dev": true
     },
+    "node_modules/reselect": {
+      "version": "4.1.8",
+      "resolved": "https://registry.npmjs.org/reselect/-/reselect-4.1.8.tgz",
+      "integrity": "sha512-ab9EmR80F/zQTMNeneUr4cv+jSwPJgIlvEmVwLerwrWVbpLlBuls9XHzIeTFy4cegU2NHBp3va0LKOzU5qFEYQ=="
+    },
     "node_modules/resolve": {
       "version": "1.22.2",
       "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.2.tgz",
@@ -22513,8 +22572,7 @@
     "node_modules/resolve-pathname": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/resolve-pathname/-/resolve-pathname-3.0.0.tgz",
-      "integrity": "sha512-C7rARubxI8bXFNB/hqcp/4iUeIXJhJZvFPFPiSPRnhU5UPxzMFIl+2E6yY6c4k9giDJAhtV+enfA+G89N6Csng==",
+      "integrity": "sha512-C7rARubxI8bXFNB/hqcp/4iUeIXJhJZvFPFPiSPRnhU5UPxzMFIl+2E6yY6c4k9giDJAhtV+enfA+G89N6Csng=="
-      "dev": true
     },
     "node_modules/resolve-url": {
       "version": "0.2.1",
@@ -22597,6 +22655,14 @@
         "rimraf": "bin.js"
       }
     },
+    "node_modules/rosie": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/rosie/-/rosie-2.1.0.tgz",
+      "integrity": "sha512-Dbzdc+prLXZuB/suRptDnBUY29SdGvND3bLg6cll8n7PNqzuyCxSlRfrkn8PqjS9n4QVsiM7RCvxCkKAkTQRjA==",
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/rst-selector-parser": {
       "version": "2.2.3",
       "resolved": "https://registry.npmjs.org/rst-selector-parser/-/rst-selector-parser-2.2.3.tgz",
@@ -23001,9 +23067,9 @@
       }
     },
     "node_modules/sass": {
-      "version": "1.63.3",
+      "version": "1.63.6",
-      "resolved": "https://registry.npmjs.org/sass/-/sass-1.63.3.tgz",
+      "resolved": "https://registry.npmjs.org/sass/-/sass-1.63.6.tgz",
-      "integrity": "sha512-ySdXN+DVpfwq49jG1+hmtDslYqpS7SkOR5GpF6o2bmb1RL/xS+wvPmegMvMywyfsmAV6p7TgwXYGrCZIFFbAHg==",
+      "integrity": "sha512-MJuxGMHzaOW7ipp+1KdELtqKbfAWbH7OLIdoSMnVe3EXPMTmxTmlaZDCTsgIpPCs3w99lLo9/zDKkOrJuT5byw==",
       "dev": true,
       "dependencies": {
         "chokidar": ">=3.0.0 <4.0.0",
@@ -24714,17 +24780,20 @@
       "integrity": "sha512-eHY7nBftgThBqOyHGVN+l8gF0BucP09fMo0oO/Lb0w1OF80dJv+lDVpXG60WMQvkcxAkNybKsrEIE3ZtKGmPrA==",
       "dev": true
     },
+    "node_modules/timeago.js": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/timeago.js/-/timeago.js-4.0.2.tgz",
+      "integrity": "sha512-a7wPxPdVlQL7lqvitHGGRsofhdwtkoSXPGATFuSOA2i1ZNQEPLrGnj68vOp2sOJTCFAQVXPeNMX/GctBaO9L2w=="
+    },
     "node_modules/tiny-invariant": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/tiny-invariant/-/tiny-invariant-1.3.1.tgz",
-      "integrity": "sha512-AD5ih2NlSssTCwsMznbvwMZpJ1cbhkGd2uueNxzv2jDlEeZdU04JQfRnggJQ8DrcVBGjAsCKwFBbDlVNtEMlzw==",
+      "integrity": "sha512-AD5ih2NlSssTCwsMznbvwMZpJ1cbhkGd2uueNxzv2jDlEeZdU04JQfRnggJQ8DrcVBGjAsCKwFBbDlVNtEMlzw=="
-      "dev": true
     },
     "node_modules/tiny-warning": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/tiny-warning/-/tiny-warning-1.0.3.tgz",
-      "integrity": "sha512-lBN9zLN/oAf68o3zNXYrdCt1kP8WsiGW8Oo2ka41b2IM5JL/S1CTyX1rW0mb/zSuJun0ZUrDxx4sqvYS2FWzPA==",
+      "integrity": "sha512-lBN9zLN/oAf68o3zNXYrdCt1kP8WsiGW8Oo2ka41b2IM5JL/S1CTyX1rW0mb/zSuJun0ZUrDxx4sqvYS2FWzPA=="
-      "dev": true
     },
     "node_modules/tmpl": {
       "version": "1.0.5",
@@ -25366,8 +25435,7 @@
     "node_modules/value-equal": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/value-equal/-/value-equal-1.0.1.tgz",
-      "integrity": "sha512-NOJ6JZCAWr0zlxZt+xqCHNTEKOsrks2HQd4MqhP1qy4z1SkbEP467eNx6TgDKXMvUOb+OENfJCZwM+16n7fRfw==",
+      "integrity": "sha512-NOJ6JZCAWr0zlxZt+xqCHNTEKOsrks2HQd4MqhP1qy4z1SkbEP467eNx6TgDKXMvUOb+OENfJCZwM+16n7fRfw=="
-      "dev": true
     },
     "node_modules/vary": {
       "version": "1.1.2",

package.json

@@ -35,10 +35,10 @@
   "devDependencies": {
     "@edx/brand": "npm:@edx/brand-openedx@1.2.0",
     "@edx/browserslist-config": "^1.1.1",
-    "@edx/frontend-build": "12.8.51",
+    "@edx/frontend-build": "12.8.57",
     "@edx/frontend-platform": "4.5.1",
     "@edx/reactifex": "^2.1.1",
-    "@testing-library/dom": "9.3.0",
+    "@testing-library/dom": "9.3.1",
     "@testing-library/jest-dom": "5.16.5",
     "@testing-library/react": "10.4.9",
     "enzyme": "3.11.0",
@@ -50,21 +50,28 @@
     "react": "16.14.0",
     "react-dom": "16.14.0",
     "react-redux": "7.2.9",
-    "react-router-dom": "5.3.4",
     "react-test-renderer": "16.14.0",
     "redux": "4.2.1",
     "redux-saga": "1.2.3"
   },
   "dependencies": {
-    "@edx/paragon": "20.44.0",
+    "@edx/paragon": "20.45.0",
     "@fortawesome/fontawesome-svg-core": "6.3.0",
     "@fortawesome/free-brands-svg-icons": "6.3.0",
     "@fortawesome/free-regular-svg-icons": "6.3.0",
     "@fortawesome/free-solid-svg-icons": "6.3.0",
     "@fortawesome/react-fontawesome": "^0.2.0",
+    "@reduxjs/toolkit": "1.9.5",
+    "axios-mock-adapter": "1.21.5",
     "babel-polyfill": "6.26.0",
+    "classnames": "2.3.2",
+    "lodash": "4.17.21",
+    "react-redux": "7.2.9",
     "react-responsive": "8.2.0",
-    "react-transition-group": "4.4.5"
+    "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": "^4.0.0",

src/Header.test.jsx

@@ -2,24 +2,38 @@
 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={{}}>
-      <AppContext.Provider
+      <AppProvider store={store}>
-        value={contextValue}
+        <AppContext.Provider
-      >
+          value={contextValue}
-        <Header />
+        >
-      </AppContext.Provider>
+          <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 contextValue = {
       authenticatedUser: null,

src/Notifications/NotificationRowItem.jsx

@@ -0,0 +1,71 @@
+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}
+    >
+      <Icon src={iconComponent} className={`${iconClass} mr-4 notification-icon`} />
+      <div className="d-flex w-100">
+        <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 }}
+            />
+            <div className="py-0 d-flex">
+              <span className="font-size-12 text-gray-500 line-height-20">
+                <span>{courseName}</span>
+                <span className="text-light-700 px-1.5">{intl.formatMessage(messages.fullStop)}</span>
+                <span>{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" />
+            </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 +1,81 @@
+import React, { useCallback, useMemo } from 'react';
+import { Button } 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 } from './data/selectors';
+import { splitNotificationsByTime } from './utils';
+import { updatePaginationRequest } from './data/slice';
+
+const NotificationSections = () => {
+  const intl = useIntl();
+  const dispatch = useDispatch();
+  const selectedAppName = useSelector(selectSelectedAppName());
+  const notifications = useSelector(selectNotificationsByIds(selectedAppName));
+  const { currentPage, numPages } = 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}
+            >
+              {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">
+      {renderNotificationSection('today', today)}
+      {renderNotificationSection('earlier', earlier)}
+      {currentPage < numPages && (
+        <Button variant="primary" className="w-100 bg-primary-500" onClick={updatePagination}>
+          {intl.formatMessage(messages.loadMoreNotifications)}
+        </Button>
+      )}
+    </div>
+  );
+};
+
+export default React.memo(NotificationSections);

src/Notifications/NotificationTabs.jsx

@@ -0,0 +1,52 @@
+/* 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, pageSize: 10 }));
+    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"
+    >
+      {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 +1,22 @@
+import { Factory } from 'rosie';
+
+Factory.define('notificationsCount')
+  .attr('count', 45)
+  .attr('countByAppName', {
+    reminders: 10,
+    discussions: 20,
+    grades: 10,
+    authoring: 5,
+  })
+  .attr('showNotificationsTray', true);
+
+Factory.define('notification')
+  .sequence('id')
+  .attr('type', 'post')
+  .sequence('content', ['id'], (idx, notificationId) => `<p><b>User ${idx}</b> posts <b>Hello and welcome to SC0x
+  ${notificationId}!</b></p>`)
+  .attr('course_name', 'Supply Chain Analytics')
+  .sequence('content_url', (idx) => `https://example.com/${idx}`)
+  .attr('last_read', null)
+  .attr('last_seen', null)
+  .sequence('created_at', ['createdDate'], (idx, date) => date);

src/Notifications/data/api.js

@@ -0,0 +1,44 @@
+import { getConfig, snakeCaseObject } from '@edx/frontend-platform';
+import { getAuthenticatedHttpClient } from '@edx/frontend-platform/auth';
+
+export const getNotificationsCountApiUrl = () => `${getConfig().LMS_BASE_URL}/api/notifications/count/`;
+export const getNotificationsApiUrl = () => `${getConfig().LMS_BASE_URL}/api/notifications/`;
+export const markNotificationsSeenApiUrl = (appName) => `${getConfig().LMS_BASE_URL}/api/notifications/mark-notifications-unseen/${appName}/`;
+export const markNotificationAsReadApiUrl = () => `${getConfig().LMS_BASE_URL}/api/notifications/read/`;
+
+export async function getNotifications(appName, page, pageSize) {
+  const params = snakeCaseObject({ page, pageSize });
+  const { data } = await getAuthenticatedHttpClient().get(getNotificationsApiUrl(), { params });
+
+  const startIndex = (page - 1) * pageSize;
+  const endIndex = startIndex + pageSize;
+
+  const notifications = data.slice(startIndex, endIndex);
+  return { notifications, numPages: 2, currentPage: page };
+}
+
+export async function getNotificationCounts() {
+  const { data } = await getAuthenticatedHttpClient().get(getNotificationsCountApiUrl());
+
+  return data;
+}
+
+export async function markNotificationSeen(appName) {
+  const { data } = await getAuthenticatedHttpClient().put(`${markNotificationsSeenApiUrl(appName)}`);
+
+  return data;
+}
+
+export async function markAllNotificationRead(appName) {
+  const params = snakeCaseObject({ appName });
+  const { data } = await getAuthenticatedHttpClient().put(markNotificationAsReadApiUrl(), { params });
+
+  return data;
+}
+
+export async function markNotificationRead(notificationId) {
+  const params = snakeCaseObject({ notificationId });
+  const { data } = await getAuthenticatedHttpClient().put(markNotificationAsReadApiUrl(), { params });
+
+  return { data, id: notificationId };
+}

src/Notifications/data/api.test.js

@@ -0,0 +1,150 @@
+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 {
+  getNotificationsApiUrl, getNotificationsCountApiUrl, markNotificationAsReadApiUrl, markNotificationsSeenApiUrl,
+  getNotificationCounts, getNotifications, markNotificationSeen, markAllNotificationRead, markNotificationRead,
+} from './api';
+
+import './__factories__';
+
+const notificationCountsApiUrl = getNotificationsCountApiUrl();
+const notificationsApiUrl = getNotificationsApiUrl();
+const markedAllNotificationsAsSeenApiUrl = markNotificationsSeenApiUrl('discussions');
+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.discussions).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.buildList('notification', 2, null, { createdDate: new Date().toISOString() })),
+    );
+
+    const { notifications } = await getNotifications('discussions', 1, 10);
+
+    expect(notifications).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 getNotifications({ page: 1, pageSize: 10 });
+    } 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('discussions');
+
+    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('discussions');
+    } 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.onPut(markedAllNotificationsAsReadApiUrl).reply(200, { message: 'Notifications marked read.' });
+
+    const { message } = await markAllNotificationRead('discussions');
+
+    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.onPut(markedAllNotificationsAsReadApiUrl).reply(statusCode, { message });
+    try {
+      await markAllNotificationRead('discussions');
+    } catch (error) {
+      expect(error.response.status).toEqual(statusCode);
+      expect(error.response.data.message).toEqual(message);
+    }
+  });
+
+  it('Successfully marked notification as read.', async () => {
+    axiosMock.onPut(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.onPut(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 +1,164 @@
+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 {
+  getNotificationsApiUrl, getNotificationsCountApiUrl, markNotificationAsReadApiUrl, markNotificationsSeenApiUrl,
+} from './api';
+import {
+  fetchAppsNotificationCount, fetchNotificationList, markNotificationsAsRead, markAllNotificationsAsRead,
+  resetNotificationState, markNotificationsAsSeen,
+} from './thunks';
+
+import './__factories__';
+
+const notificationCountsApiUrl = getNotificationsCountApiUrl();
+const notificationsApiUrl = getNotificationsApiUrl();
+const markedAllNotificationsAsReadApiUrl = markNotificationAsReadApiUrl();
+const markedAllNotificationsAsSeenApiUrl = markNotificationsSeenApiUrl('discussions');
+
+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();
+
+    axiosMock.onGet(notificationCountsApiUrl).reply(200, (Factory.build('notificationsCount')));
+    axiosMock.onGet(notificationsApiUrl).reply(
+      200,
+      (Factory.buildList('notification', 2, null, { createdDate: new Date().toISOString() })),
+    );
+    await executeThunk(fetchAppsNotificationCount(), store.dispatch, store.getState);
+    await executeThunk(fetchNotificationList({ page: 1, pageSize: 10 }), store.dispatch, store.getState);
+  });
+
+  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('discussions');
+    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.count).toEqual(10);
+    expect(notifications.pagination.numPages).toEqual(1);
+    expect(notifications.pagination.currentPage).toEqual(1);
+    expect(notifications.pagination.nextPage).toBeNull();
+  });
+
+  it('Successfully loaded notifications list in the redux.', async () => {
+    const { notifications: { notifications } } = store.getState();
+
+    expect(Object.keys(notifications)).toHaveLength(2);
+  });
+
+  it.each([
+    { statusCode: 404, status: 'failed' },
+    { statusCode: 403, status: 'denied' },
+  ])('%s to load notifications list in the redux.', async ({ statusCode, status }) => {
+    axiosMock.onGet(notificationsApiUrl).reply(statusCode);
+    await executeThunk(fetchNotificationList({ page: 1, pageSize: 10 }), 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.discussions).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('discussions'), 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('discussions'), 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.onPut(markedAllNotificationsAsReadApiUrl).reply(200);
+    await executeThunk(markAllNotificationsAsRead('discussions'), 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.onPut(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.onPut(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 +1,126 @@
+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 { getNotificationsApiUrl, getNotificationsCountApiUrl } from './api';
+import {
+  selectNotifications,
+  selectNotificationsByIds,
+  selectNotificationStatus,
+  selectNotificationTabs,
+  selectNotificationTabsCount,
+  selectPaginationData,
+  selectSelectedAppName,
+  selectSelectedAppNotificationIds,
+  selectShowNotificationTray,
+} from './selectors';
+import { fetchAppsNotificationCount, fetchNotificationList } from './thunks';
+
+import './__factories__';
+
+const notificationCountsApiUrl = getNotificationsCountApiUrl();
+const notificationsApiUrl = getNotificationsApiUrl();
+
+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();
+
+    axiosMock.onGet(notificationCountsApiUrl).reply(200, (Factory.build('notificationsCount')));
+    axiosMock.onGet(notificationsApiUrl).reply(
+      200,
+      (Factory.buildList('notification', 2, null, { createdDate: new Date().toISOString() })),
+    );
+    await executeThunk(fetchAppsNotificationCount(), store.dispatch, store.getState);
+    await executeThunk(fetchNotificationList({ page: 1, pageSize: 10 }), store.dispatch, store.getState);
+  });
+
+  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.discussions).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('discussions')(state);
+
+    expect(notificationIds).toHaveLength(2);
+  });
+
+  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(2);
+  });
+
+  it('Should return notifications from Ids.', async () => {
+    const state = store.getState();
+    const notifications = selectNotificationsByIds('discussions')(state);
+
+    expect(notifications).toHaveLength(2);
+  });
+
+  it('Should return selected app name.', async () => {
+    const state = store.getState();
+    const appName = selectSelectedAppName()(state);
+
+    expect(appName).toEqual('discussions');
+  });
+
+  it('Should return pagination data.', async () => {
+    const state = store.getState();
+    const paginationData = selectPaginationData()(state);
+
+    expect(paginationData.count).toEqual(10);
+    expect(paginationData.currentPage).toEqual(1);
+    expect(paginationData.numPages).toEqual(2);
+  });
+});

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 +1,154 @@
+/* eslint-disable no-param-reassign */
+import { createSlice } from '@reduxjs/toolkit';
+
+export const RequestStatus = {
+  IDLE: 'idle',
+  LOADING: 'in-progress',
+  LOADED: 'successful',
+  FAILED: 'failed',
+  DENIED: 'denied',
+};
+
+const initialState = {
+  notificationStatus: 'idle',
+  appName: 'discussions',
+  appsId: [],
+  apps: {},
+  notifications: {},
+  tabsCount: {},
+  showNotificationsTray: false,
+  pagination: {
+    count: 10,
+    numPages: 1,
+    currentPage: 1,
+    nextPage: null,
+  },
+};
+const slice = createSlice({
+  name: 'notifications',
+  initialState,
+  reducers: {
+    fetchNotificationDenied: (state) => {
+      state.notificationStatus = RequestStatus.DENIED;
+    },
+    fetchNotificationFailure: (state) => {
+      state.notificationStatus = RequestStatus.FAILED;
+    },
+    fetchNotificationRequest: (state) => {
+      state.notificationStatus = RequestStatus.LOADING;
+    },
+    fetchNotificationSuccess: (state, { payload }) => {
+      const {
+        newNotificationIds, notificationsKeyValuePair, numPages, currentPage,
+      } = 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.LOADED;
+      state.pagination.numPages = numPages;
+      state.pagination.currentPage = currentPage;
+    },
+    fetchNotificationsCountDenied: (state) => {
+      state.notificationStatus = RequestStatus.DENIED;
+    },
+    fetchNotificationsCountFailure: (state) => {
+      state.notificationStatus = RequestStatus.FAILED;
+    },
+    fetchNotificationsCountRequest: (state) => {
+      state.notificationStatus = RequestStatus.LOADING;
+    },
+    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.LOADED;
+    },
+    markNotificationsAsSeenRequest: (state) => {
+      state.notificationStatus = RequestStatus.LOADING;
+    },
+    markNotificationsAsSeenSuccess: (state) => {
+      state.notificationStatus = RequestStatus.LOADED;
+    },
+    markNotificationsAsSeenDenied: (state) => {
+      state.notificationStatus = RequestStatus.DENIED;
+    },
+    markNotificationsAsSeenFailure: (state) => {
+      state.notificationStatus = RequestStatus.FAILED;
+    },
+    markAllNotificationsAsReadRequest: (state) => {
+      state.notificationStatus = RequestStatus.LOADING;
+    },
+    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.LOADED;
+    },
+    markAllNotificationsAsReadDenied: (state) => {
+      state.notificationStatus = RequestStatus.DENIED;
+    },
+    markAllNotificationsAsReadFailure: (state) => {
+      state.notificationStatus = RequestStatus.FAILED;
+    },
+    markNotificationsAsReadRequest: (state) => {
+      state.notificationStatus = RequestStatus.LOADING;
+    },
+    markNotificationsAsReadSuccess: (state, { payload }) => {
+      const date = new Date().toISOString();
+      state.notifications[payload.id] = { ...state.notifications[payload.id], lastRead: date };
+      state.notificationStatus = RequestStatus.LOADED;
+    },
+    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 +1,130 @@
+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 {
+  getNotifications, 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 = ({ notifications }) => {
+  const newNotificationIds = notifications.map(notification => notification.id.toString());
+  const notificationsKeyValuePair = notifications.reduce((acc, obj) => { acc[obj.id] = obj; return acc; }, {});
+  return {
+    newNotificationIds, notificationsKeyValuePair,
+  };
+};
+
+export const fetchNotificationList = ({ appName, page, pageSize }) => (
+  async (dispatch) => {
+    try {
+      dispatch(fetchNotificationRequest({ appName }));
+      const data = await getNotifications(appName, page, pageSize);
+      const normalisedData = normalizeNotifications((camelCaseObject(data)));
+      dispatch(fetchNotificationSuccess({ ...normalisedData, numPages: data.numPages, currentPage: data.currentPage }));
+    } 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 +1,101 @@
+/* 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="notificationTray"
+          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" />
+            </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"
+        />
+        {notificationCounts?.count > 0 && (
+          <Badge
+            pill
+            variant="danger"
+            className="font-weight-normal px-1 notification-badge"
+          >
+            {notificationCounts.count}
+          </Badge>
+        )}
+      </div>
+    </OverlayTrigger>
+  );
+};
+
+export default Notifications;

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/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/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/i18n/messages/ar.json

@@ -29,5 +29,11 @@
   "header.menu.account.label": "الحساب",
   "header.menu.orderHistory.label": "سجل الطلبيات",
   "header.navigation.skipNavLink": "التخطي إلى المحتوى الرئيسي",
-  "header.menu.signOut.label": "تسجيل الخروج"
+  "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

@@ -29,5 +29,11 @@
   "header.menu.account.label": "Account",
   "header.menu.orderHistory.label": "Order History",
   "header.navigation.skipNavLink": "Skip to main content.",
-  "header.menu.signOut.label": "Sign Out"
+  "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

@@ -29,5 +29,11 @@
   "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"
+  "header.menu.signOut.label": "Cerrar sesión",
+  "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.json

@@ -29,5 +29,11 @@
   "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"
+  "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

@@ -29,5 +29,11 @@
   "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"
+  "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

@@ -29,5 +29,11 @@
   "header.menu.account.label": "Account",
   "header.menu.orderHistory.label": "Order History",
   "header.navigation.skipNavLink": "Skip to main content.",
-  "header.menu.signOut.label": "Sign Out"
+  "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

@@ -29,5 +29,11 @@
   "header.menu.account.label": "Account",
   "header.menu.orderHistory.label": "Order History",
   "header.navigation.skipNavLink": "Skip to main content.",
-  "header.menu.signOut.label": "Sign Out"
+  "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.json

@@ -29,5 +29,11 @@
   "header.menu.account.label": "Account",
   "header.menu.orderHistory.label": "Order History",
   "header.navigation.skipNavLink": "Skip to main content.",
-  "header.menu.signOut.label": "Sign Out"
+  "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/ru.json

@@ -29,5 +29,11 @@
   "header.menu.account.label": "Account",
   "header.menu.orderHistory.label": "Order History",
   "header.navigation.skipNavLink": "Skip to main content.",
-  "header.menu.signOut.label": "Sign Out"
+  "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

@@ -29,5 +29,11 @@
   "header.menu.account.label": "Account",
   "header.menu.orderHistory.label": "Order History",
   "header.navigation.skipNavLink": "Перейти до головного змісту.",
-  "header.menu.signOut.label": "Sign Out"
+  "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

@@ -29,5 +29,11 @@
   "header.menu.account.label": "Account",
   "header.menu.orderHistory.label": "Order History",
   "header.navigation.skipNavLink": "Skip to main content.",
-  "header.menu.signOut.label": "Sign Out"
+  "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.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 {
@@ -27,7 +30,7 @@ $white: #fff;
 
 .learning-header {
   min-width: 0;
-  
+
   .course-title-lockup {
     min-width: 0;
 
@@ -118,3 +121,135 @@ $white: #fff;
     border-radius: $rounded-pill;
   }
 }
+
+.content {
+  b {
+    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/AuthenticatedUserDropdown.jsx

@@ -1,16 +1,31 @@
-import React from 'react';
+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
+  }, [notificationStatus]);
+
   const dashboardMenuItem = (
     <Dropdown.Item href={`${getConfig().LMS_BASE_URL}/dashboard`}>
       {intl.formatMessage(messages.dashboard)}
@@ -19,8 +34,9 @@ const AuthenticatedUserDropdown = ({ intl, username }) => {
 
   return (
     <>
-      <a className="text-gray-700 mr-3" href={`${getConfig().SUPPORT_URL}`}>{intl.formatMessage(messages.help)}</a>
+      <a className="text-gray-700" href={`${getConfig().SUPPORT_URL}`}>{intl.formatMessage(messages.help)}</a>
-      <Dropdown className="user-dropdown">
+      {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">

src/learning-header/LearningHeader.jsx

@@ -2,11 +2,12 @@ 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 { 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,
@@ -40,24 +41,26 @@ const LearningHeader = ({
   );
 
   return (
-    <header className="learning-header">
+    <AppProvider store={store}>
-      <a className="sr-only sr-only-focusable" href="#main-content">{intl.formatMessage(messages.skipNavLink)}</a>
+      <header className="learning-header">
-      <div className="container-xl py-2 d-flex align-items-center">
+        <a className="sr-only sr-only-focusable" href="#main-content">{intl.formatMessage(messages.skipNavLink)}</a>
-        {headerLogo}
+        <div className="container-xl py-2 d-flex align-items-center">
-        <div className="flex-grow-1 course-title-lockup" style={{ lineHeight: 1 }}>
+          {headerLogo}
-          <span className="d-block small m-0">{courseOrg} {courseNumber}</span>
+          <div className="flex-grow-1 course-title-lockup" style={{ lineHeight: 1 }}>
-          <span className="d-block m-0 font-weight-bold course-title">{courseTitle}</span>
+            <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>
-        {showUserDropdown && authenticatedUser && (
+      </header>
-          <AuthenticatedUserDropdown
+    </AppProvider>
-            username={authenticatedUser.username}
-          />
-        )}
-        {showUserDropdown && !authenticatedUser && (
-          <AnonymousUserMenu />
-        )}
-      </div>
-    </header>
   );
 };
 

src/learning-header/LearningHeader.test.jsx

@@ -12,7 +12,7 @@ describe('Header', () => {
 
   it('displays user button', () => {
     render(<Header />);
-    expect(screen.getByRole('button')).toHaveTextContent(authenticatedUser.username);
+    expect(screen.getByText(authenticatedUser.username)).toBeInTheDocument();
   });
 
   it('displays course data', () => {

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;