adding data and keeping users index updated

packages/serverless/functions/src/search.ts

@@ -0,0 +1,26 @@
+import * as functions from "firebase-functions";
+const config = functions.config().env;
+
+import algoliasearch from "algoliasearch";
+
+const client = algoliasearch(config.ALGOLIA_APP_ID, config.ALGOLIA_API_KEY);
+
+const USERS_INDEX_NAME: string = config.ALGOLIA_USERS_INDEX_NAME;
+const usersIndex = client.initIndex(USERS_INDEX_NAME);
+
+export const manageUserIndex = functions.firestore
+  .document("/users/{userId}")
+  .onWrite((change, context) => {
+    // Get an object with the current document value.
+    // If the document does not exist, it has been deleted.
+    const objectId = change.before.id;
+    const document = change.after.exists ? change.after.data() : null;
+
+    // delete the index if the user is deleted
+    if (!document) {
+      return usersIndex.deleteObject(objectId);
+    }
+
+    // otherwise, just update the index with new user information
+    return usersIndex.saveObject({ objectId, ...document });
+  });