added new things

functions/.gitignore

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+node_modules/
+*.local

functions/index.js

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+/**
+ * Import function triggers from their respective submodules:
+ *
+ * const {onCall} = require("firebase-functions/v2/https");
+ * const {onDocumentWritten} = require("firebase-functions/v2/firestore");
+ *
+ * See a full list of supported triggers at https://firebase.google.com/docs/functions
+ */
+
+
+//const {onRequest} = require("firebase-functions/v2/https");
+//const logger = require("firebase-functions/logger");
+
+const functions = require('firebase-functions');
+const Filter = require('bad-words');
+
+const admin = require('firebase-admin');
+admin.initializeApp();
+
+const db = admin.firestore();
+
+exports.detectEvilUsers = functions.firestore
+    .document('messages/{msgId}')
+    .onCreate(async (doc, ctx) => {
+        const filter = new Filter();
+
+        const {text, uid} = doc.data();
+
+        if (filter.isProfane(text)) {
+            const cleaned = filter.clean(text);
+
+            await doc.ref.update({text: `Got banned for saying ${cleaned}`});
+
+            await db.collection('banned').doc('uid').set({});
+        }
+    });
+
+// Create and deploy your first functions
+// https://firebase.google.com/docs/functions/get-started
+
+// exports.helloWorld = onRequest((request, response) => {
+//   logger.info("Hello logs!", {structuredData: true});
+//   response.send("Hello from Firebase!");
+// });

functions/package.json

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+{
+  "name": "functions",
+  "description": "Cloud Functions for Firebase",
+  "scripts": {
+    "serve": "firebase emulators:start --only functions",
+    "shell": "firebase functions:shell",
+    "start": "npm run shell",
+    "deploy": "firebase deploy --only functions",
+    "logs": "firebase functions:log"
+  },
+  "engines": {
+    "node": "22"
+  },
+  "main": "index.js",
+  "dependencies": {
+    "bad-words": "^4.0.0",
+    "firebase-admin": "^12.6.0",
+    "firebase-functions": "^6.0.1"
+  },
+  "devDependencies": {
+    "firebase-functions-test": "^3.1.0"
+  },
+  "private": true
+}