From 3e0b1392b3b0aec3f6fdef8dc6239786694d1441 Mon Sep 17 00:00:00 2001
From: Maharshi Mishra <maharshi@tor.us>
Date: Fri, 23 Aug 2024 09:09:50 +0530
Subject: [PATCH] reverted old changes

---
 .../server/api/index.js                       | 50 -------------------
 .../sfa-web-ton-telegram-example/src/App.tsx  | 18 +++----
 2 files changed, 9 insertions(+), 59 deletions(-)

diff --git a/single-factor-auth-web/sfa-web-ton-telegram-example/server/api/index.js b/single-factor-auth-web/sfa-web-ton-telegram-example/server/api/index.js
index dae39dd9..ffd8d10b 100644
--- a/single-factor-auth-web/sfa-web-ton-telegram-example/server/api/index.js
+++ b/single-factor-auth-web/sfa-web-ton-telegram-example/server/api/index.js
@@ -5,7 +5,6 @@ const dotenv = require("dotenv");
 const path = require("path");
 const { AuthDataValidator } = require("@telegram-auth/server");
 const { objectToAuthDataMap } = require("@telegram-auth/server/utils");
-const crypto = require('crypto');
 
 dotenv.config();
 
@@ -31,33 +30,6 @@ const generateJwtToken = (userData) => {
   return jwt.sign(payload, privateKey, { algorithm: "RS256", keyid: JWT_KEY_ID });
 };
 
-function validateTelegramWebAppData(telegramInitData) {
-  // Parse the received init data
-  const initData = new URLSearchParams(telegramInitData);
-
-  // Extract the hash and remove it from the data
-  const hash = initData.get('hash');
-  initData.delete('hash');
-
-  // Sort the data alphabetically
-  const sortedInitData = new URLSearchParams([...initData.entries()].sort());
-
-  // Create a data check string
-  const dataCheckString = sortedInitData.toString();
-
-  // Create a secret key from the bot token
-  const secretKey = crypto.createHmac('sha256', 'WebAppData').update(process.env.TELEGRAM_BOT_TOKEN).digest();
-
-  // Calculate the hmac-sha256 signature
-  const calculatedHash = crypto
-    .createHmac('sha256', secretKey)
-    .update(dataCheckString)
-    .digest('hex');
-
-  // Compare the calculated hash with the received hash
-  return calculatedHash === hash;
-}
-
 app.get("/", (req, res) => res.send("Express on Vercel for Telegram Login to be used with Web3Auth"));
 
 app.get("/.well-known/jwks.json", (req, res) => {
@@ -119,28 +91,6 @@ app.get("/callback", async (req, res) => {
   }
 });
 
-app.post("/auth", (req, res) => {
-  const { telegramInitData, user } = req.body;
-
-  if (!validateTelegramWebAppData(telegramInitData)) {
-    return res.status(401).json({ error: 'Invalid Telegram data' });
-  }
-
-  // If validation passes, generate a JWT token
-  const token = jwt.sign(
-    { 
-      telegramId: user.id, 
-      username: user.username,
-      firstName: user.first_name,
-      lastName: user.last_name
-    },
-    process.env.JWT_SECRET,
-    { expiresIn: '1h' }
-  );
-
-  res.json({ token });
-});
-
 app.listen(3000, () => console.log("Server ready on port 3000."));
 
 module.exports = app;
\ No newline at end of file
diff --git a/single-factor-auth-web/sfa-web-ton-telegram-example/src/App.tsx b/single-factor-auth-web/sfa-web-ton-telegram-example/src/App.tsx
index bb061882..03de71c6 100644
--- a/single-factor-auth-web/sfa-web-ton-telegram-example/src/App.tsx
+++ b/single-factor-auth-web/sfa-web-ton-telegram-example/src/App.tsx
@@ -69,14 +69,8 @@ function App() {
           headers: {
             "Content-Type": "application/json",
           },
-          body: JSON.stringify({
-            telegramInitData: WebApp.initData,
-            user: userData,
-          }),
+          body: JSON.stringify(userData),
         });
-        if (!response.ok) {
-          throw new Error("Authentication failed");
-        }
         const { token } = await response.json();
         await loginWithWeb3Auth(token, web3auth);
       }
@@ -241,6 +235,7 @@ function App() {
           </button>
         </div>
       </div>
+
       <div id="console" style={{ whiteSpace: "pre-line" }}>
         <p style={{ whiteSpace: "pre-line" }}></p>
       </div>
@@ -249,13 +244,18 @@ function App() {
 
   const logoutView = (
     <button onClick={login} className="card">
-      Login with Telegram
+      Login
     </button>
   );
 
   return (
     <div className="container">
-      <h1 className="title">Web3Auth SFA React Telegram Example</h1>
+      <h1 className="title">
+        <a target="_blank" href="https://web3auth.io/docs/sdk/core-kit/sfa-web" rel="noreferrer">
+          Web3Auth
+        </a>{" "}
+        SFA React Telegram GitHub Example
+      </h1>
 
       {isLoggingIn ? <Loading /> : <div className="grid">{web3authSfa ? (loggedIn ? loginView : logoutView) : null}</div>}