From 2f44be450ff64c9bc830d124304aa0914c732560 Mon Sep 17 00:00:00 2001
From: webbrain-one <295484252+webbrain-one@users.noreply.github.com>
Date: Sun, 16 Aug 2026 00:44:18 +0300
Subject: [PATCH] Prevent duplicate `addImages` emit on startup

Guard `socket.emit('addImages', ...)` so it is no longer executed three times at application start.
---
 src/frontend/nodejs/app.js | 47 +++++++++++++++++++-------------------
 1 file changed, 23 insertions(+), 24 deletions(-)

diff --git a/src/frontend/nodejs/app.js b/src/frontend/nodejs/app.js
index 710f4a5..f60aef7 100644
--- a/src/frontend/nodejs/app.js
+++ b/src/frontend/nodejs/app.js
@@ -80,43 +80,42 @@ app.get('/', function(req, res)
    res.sendFile(__dirname + '/index.html');
 });
 
-io.on('connection', function(socket)
-{ 
-    var images_abspath = __dirname + static_dir + images_dir,
-        files = fs.readdirSync(images_abspath),
-        images = getImages(files, images_abspath);
+var images_abspath = __dirname + static_dir + images_dir,
+    files = fs.readdirSync(images_abspath),
+    images = getImages(files, images_abspath);
 
-    socket.emit('addImages', images, images_dir);
-    
-    watcher.on('create', function(file)
-    {
-        images.push(basename(file));
-        socket.emit('addImage', basename(file), images_dir);
-    }); 
-    
-    watcher.on('remove', function(file)
+watcher.on('create', function(file)
+{
+    images.push(basename(file));
+    io.sockets.emit('addImage', basename(file), images_dir);
+});
+
+watcher.on('remove', function(file)
+{
+    if (images.indexOf(basename(file)) != -1)
     {
-        if (images.indexOf(basename(file)) != -1)
-        {
-            removeElementFromArray(images, basename(file));
-            socket.emit('removeImage', basename(file));
-            // TODO keep or erase the record from the database?
-        }
-    });
+        removeElementFromArray(images, basename(file));
+        io.sockets.emit('removeImage', basename(file));
+        // TODO keep or erase the record from the database?
+    }
+});
+
+io.on('connection', function(socket)
+{
+    socket.emit('addImages', images, images_dir);
 
     socket.on("getData", function(filename)
-    { 
+    {
         hash = filename.substr(0, filename.lastIndexOf("."));
 
         var sqlQuery = "SELECT * FROM Images WHERE HASH = '" + hash  + "';";
         sock = this;
-        
+
         data = database.get(sqlQuery, function(error, row)
         {
             sock.emit('setBackData', filename, row);
         });
     });
-
 });
 
 watcher.close(watched_dir);