From 2d217129b9fb2e4379b728b01ec73fc0be8c58ff Mon Sep 17 00:00:00 2001
From: Hypolite Petovan <hypolite@mrpetovan.com>
Date: Wed, 27 May 2020 08:30:26 -0400
Subject: [PATCH] Improve performance of asynchronous like/update

- Make the like module return earlier instead of outputting a full empty HTML page
- Update the force_update variable earlier to prevent spilling on multiple unrelated nav update calls
---
 src/Module/Like.php |  3 +++
 view/js/main.js     | 13 +++++++------
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/Module/Like.php b/src/Module/Like.php
index c926012f18..ca38247508 100644
--- a/src/Module/Like.php
+++ b/src/Module/Like.php
@@ -22,6 +22,7 @@
 namespace Friendica\Module;
 
 use Friendica\BaseModule;
+use Friendica\Core\System;
 use Friendica\DI;
 use Friendica\Model\Item;
 use Friendica\Core\Session;
@@ -68,5 +69,7 @@ class Like extends BaseModule
 
 			DI::baseUrl()->redirect($returnPath . $rand);
 		}
+
+		System::jsonExit(['status' => 'OK']);
 	}
 }
diff --git a/view/js/main.js b/view/js/main.js
index 8613153987..af2f8522c8 100644
--- a/view/js/main.js
+++ b/view/js/main.js
@@ -594,15 +594,17 @@ function liveUpdate(src) {
 
 	in_progress = true;
 
-	if ($(document).scrollTop() == 0) {
-		force_update = true;
-	}
+	let force = force_update || $(document).scrollTop() === 0;
 
 	var orgHeight = $("section").height();
 
 	var udargs = ((netargs.length) ? '/' + netargs : '');
 
-	var update_url = 'update_' + src + udargs + '&p=' + profile_uid + '&force=' + ((force_update) ? 1 : 0) + '&item=' + update_item;
+	var update_url = 'update_' + src + udargs + '&p=' + profile_uid + '&force=' + (force ? 1 : 0) + '&item=' + update_item;
+
+	if (force_update) {
+		force_update = false;
+	}
 
 	if (getUrlParameter('page')) {
 		update_url += '&page=' + getUrlParameter('page');
@@ -614,9 +616,8 @@ function liveUpdate(src) {
 		update_url += '&max_id=' + getUrlParameter('max_id');
 	}
 
-	$.get(update_url,function(data) {
+	$.get(update_url, function(data) {
 		in_progress = false;
-		force_update = false;
 		update_item = 0;
 
 		$('.wall-item-body', data).imagesLoaded(function() {