From 160af1897856070b8cb46bc681f35605825e9f9a Mon Sep 17 00:00:00 2001
From: Tim Wilkinson <tim.j.wilkinson@gmail.com>
Date: Thu, 20 Jan 2022 17:12:00 -0800
Subject: [PATCH] Ignore empty alerts

---
 files/usr/lib/lua/aredn/html.lua | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/files/usr/lib/lua/aredn/html.lua b/files/usr/lib/lua/aredn/html.lua
index ace19eb9..58b5767e 100644
--- a/files/usr/lib/lua/aredn/html.lua
+++ b/files/usr/lib/lua/aredn/html.lua
@@ -80,10 +80,10 @@ function html.alert_banner()
         html.print("<div style=\"padding:5px;background-color:yellow;color:black;border:1px solid #ccc;width:600px;\"><a href=\"/cgi-bin/sysinfo.lua\">!!!! UNTESTED HARDWARE !!!!</a></div>")
     end
 
-    if aredn_message then
+    if aredn_message and #aredn_message > 0 then
         html.print("<div style=\"padding:5px;background-color:#fff380;color:black;border:1px solid #ccc;width:600px;\"><strong>AREDN Alert(s):</strong><br /><div style=\"text-align:left;\">" .. aredn_message .. "</div></div>")
     end
-    if local_message then
+    if local_message and #local_message > 0 then
         html.print("<div style=\"padding:5px;background-color:#fff380;color:black;border:1px solid #ccc;width:600px;\"><strong>Local Alert(s):</strong><br /><div style=\"text-align:left;\">" .. local_message .. "</div></div>")
     end