Added authorization server and backup of JSReport config. IO-585

jsreport/auth-server/firebase/firebase-handler.js

@@ -0,0 +1,35 @@
+var admin = require("firebase-admin");
+
+const path = require("path");
+require("dotenv").config({
+  path: path.resolve(
+    process.cwd(),
+    `.env.${process.env.NODE_ENV || "development"}`
+  ),
+});
+
+var serviceAccount = require(process.env.FIREBASE_ADMINSDK_JSON);
+
+admin.initializeApp({
+  credential: admin.credential.cert(serviceAccount),
+  databaseURL: process.env.FIREBASE_DATABASE_URL,
+});
+
+exports.admin = admin;
+
+exports.validateFirebaseIdToken = async (req, res, next) => {
+  console.log("req.body", req.body);
+
+  let idToken = req.body.token;
+  try {
+    const decodedIdToken = await admin.auth().verifyIdToken(idToken);
+    //console.log("ID Token correctly decoded", decodedIdToken);
+    req.user = decodedIdToken;
+    res.send({ active: true, username: "admin" });
+    return;
+  } catch (error) {
+    console.error("Error while verifying Firebase ID token:", error);
+    res.status(403).send({ active: false });
+    return;
+  }
+};