ui changes

backend/db.js

@@ -0,0 +1,38 @@
+const fs = require('fs');
+const path = require('path');
+const CryptoJS = require('crypto-js');
+
+const encryptionKey = process.env.ENCRYPTION_KEY;
+const dbPath = path.join(__dirname, 'db.json');
+
+const readDb = () => {
+  try {
+    const data = fs.readFileSync(dbPath, 'utf8');
+    if (data) {
+      const bytes = CryptoJS.AES.decrypt(data, encryptionKey);
+      const decryptedData = bytes.toString(CryptoJS.enc.Utf8);
+      if (decryptedData) {
+        return JSON.parse(decryptedData);
+      }
+    }
+    return {};
+  } catch (error) {
+    if (error.code === 'ENOENT') {
+      return {};
+    }
+    console.error('Error reading or decrypting db.json:', error);
+    return {};
+  }
+};
+
+const writeDb = (db) => {
+  try {
+    const data = JSON.stringify(db, null, 2);
+    const encryptedData = CryptoJS.AES.encrypt(data, encryptionKey).toString();
+    fs.writeFileSync(dbPath, encryptedData, 'utf8');
+  } catch (error) {
+    console.error('Error encrypting or writing to db.json:', error);
+  }
+};
+
+module.exports = { readDb, writeDb, dbPath };