added folders to organize files

functions/util/admin.js

@@ -0,0 +1,7 @@
+const admin = require('firebase-admin');
+
+admin.initializeApp();
+
+const db = admin.firestore();
+
+module.exports = { admin, db };

functions/util/config.js

@@ -0,0 +1,9 @@
+module.exports = {
+    apiKey: "AIzaSyCvsWetg4qFdsPGfJ3LCw_QaaYzoan7Q34",
+    authDomain: "twistter-e4649.firebaseapp.com",
+    databaseURL: "https://twistter-e4649.firebaseio.com",
+    projectId: "twistter-e4649",
+    storageBucket: "twistter-e4649.appspot.com",
+    messagingSenderId: "20131817365",
+    appId: "1:20131817365:web:633c95fb08b16d4526b89c"
+};

functions/util/fbAuth.js

@@ -0,0 +1,28 @@
+const { admin, db } = require('./admin');
+
+module.exports = (req, res, next) => {
+    let idToken;
+    if (req.headers.authorization) {
+        idToken = req.headers.authorization;
+    } else {
+        console.error('No token found');
+        return res.status(403).json({ error: 'Unauthorized'});
+    }
+
+    admin.auth().verifyIdToken(idToken)
+        .then((decodedToken) => {
+            req.user = decodedToken;
+            return db.collection('users').where('userId', '==', req.user.uid)
+            .limit(1)
+            .get();
+        })
+        .then((data) => {
+            req.user.handle = data.docs[0].data().handle;
+            req.user.imageUrl = data.docs[0].data().imageUrl;
+            return next();
+        })
+        .catch((err) => {
+            console.error('Error while verifying token ', err);
+            return res.status(403).json(err);
+        });
+};