Implemented blocklist + some code changes

src/blocklist.js

@@ -0,0 +1,28 @@
+const fs = require('fs');
+const path = require('path');
+
+const blocklistPath = path.join(__dirname, '../blocklist.txt');
+
+let blocklist = [];
+
+const readBlocklist = () => {
+    try {
+        const data = fs.readFileSync(blocklistPath, 'utf8');
+        blocklist = data.split('\n').map(id => id.trim()).filter(id => id !== '');
+    } catch (error) {
+        if (error.code === 'ENOENT') {
+            console.log('WARN: Blocklist file not found. Creating a new one.');
+            fs.writeFileSync(blocklistPath, ''); // Create an empty blocklist file
+        } else {
+            console.error('WARN: Error reading blocklist:', error);
+        }
+    }
+};
+
+const isBlocked = (userId) => {
+    return blocklist.includes(String(userId));
+};
+
+readBlocklist();
+
+module.exports = { isBlocked };