Update index.html

index.html

@@ -77,6 +77,15 @@
     let selectedFile = null;
     let currentImageHash = null;
 
+    function getUserId() {
+        let uid = localStorage.getItem('scam_checker_uid');
+        if (!uid) {
+            uid = 'uid_' + Math.random().toString(36).substring(2) + Date.now().toString(36);
+            localStorage.setItem('scam_checker_uid', uid);
+        }
+        return uid;
+    }
+
     function handleFileSelect(event) {
         const file = event.target.files[0];
         if (file) {
@@ -167,6 +176,7 @@
         const formData = new FormData();
         formData.append('image_hash', currentImageHash);
         formData.append('vote_type', voteType);
+        formData.append('user_id', getUserId());
 
         try {
             const res = await fetch('/vote', {