feat: add Algolia DocSearch

.github/workflows/gh-pages.yml

@@ -27,6 +27,9 @@ jobs:
 
       - name: Build website
         run: npm run build
+        env:
+          REACT_APP_DOC_SEARCH_APP_ID: ${{ secrets.DOC_SEARCH_APP_ID }}
+          REACT_APP_DOC_SEARCH_INDEX_NAME: ${{ secrets.DOC_SEARCH_INDEX_NAME }}
 
       - name: Deploy to GitHub Pages
         uses: peaceiris/actions-gh-pages@4f9cc6602d3f66b9c108549d475ec49e8ef4d45e # v4.0.0

docusaurus.config.ts

@@ -1,6 +1,7 @@
 import {themes as prismThemes} from 'prism-react-renderer';
 import type {Config} from '@docusaurus/types';
 import type * as Preset from '@docusaurus/preset-classic';
+import * as process from "node:process";
 
 const config: Config = {
   title: 'Brave Ads',
@@ -102,6 +103,14 @@ const config: Config = {
       ],
       copyright: `Copyright © ${new Date().getFullYear()} Brave Software, Inc.`,
     },
+    algolia: {
+      appId: process.env.REACT_APP_DOC_SEARCH_APP_ID,
+      // Public API key: it is safe to commit it
+      apiKey: '9d6bcc3afa8daed9395db8c441bc04a1',
+      indexName: process.env.REACT_APP_DOC_SEARCH_INDEX_NAME,
+      // Ensures that search results are relevant to the current language and version
+      contextualSearch: true,
+    },
     prism: {
       theme: prismThemes.github,
       darkTheme: prismThemes.dracula,