Update server.js

server.js

@@ -1,25 +1,42 @@
 const express = require("express");
-const captcha = require("captcha");
+const svgCaptcha = require("svg-captcha");
+const { createCanvas, loadImage } = require("canvas");
 const fs = require("fs");
 const os = require("os");
 const path = require("path");
+const crypto = require("crypto");
 
 const app = express();
 const tempDir = os.tmpdir();
 
-app.get("/captcha", (req, res) => {
-    const captchaCode = Math.random().toString(36).substring(2, 6).toUpperCase();
-    const captchaImage = captcha.create({ width: 150, height: 50, text: captchaCode });
+function generateRandomHex(length) {
+    return crypto.randomBytes(length).toString("hex");
+}
 
-    const fileName = `temp_${Math.random().toString(36).substring(2, 6).toUpperCase()}.png`;
+app.get("/captcha", async (req, res) => {
+    const captcha = svgCaptcha.create({
+        size: 6,
+        ignoreChars: "0oO1iIl", 
+        noise: 2,
+        color: true
+    });
+
+    const fileName = `${generateRandomHex(16)}.png`;
     const filePath = path.join(tempDir, fileName);
 
-    fs.writeFile(filePath, captchaImage.buffer, (err) => {
+    const canvas = createCanvas(200, 80);
+    const ctx = canvas.getContext("2d");
+    const img = await loadImage(`data:image/svg+xml;base64,${Buffer.from(captcha.data).toString("base64")}`);
+
+    ctx.drawImage(img, 0, 0, 200, 80);
+    const buffer = canvas.toBuffer("image/png");
+
+    fs.writeFile(filePath, buffer, (err) => {
         if (err) {
             return res.status(500).json({ error: "Failed to save captcha" });
         }
         res.json({
-            answer: captchaCode,
+            answer: captcha.text,
             url: filePath
         });
     });