waybar: improve load average field

use classes for warning and critical

.config/waybar/style.css

@@ -195,7 +195,17 @@ label:focus {
 
 #custom-load {
     padding-right: 0;
-    color: #aa8888;
+    /* color: #aa8888; */
+}
+
+#custom-load.warning {
+    color: #ffffaa;
+    font-weight: bold;
+}
+
+#custom-load.critical {
+    background-color: #b000b0;
+    color: #000000;
 }
 
 /* #custom-media.custom-spotify { */

.local/bin/waybarscript_loadavg

@@ -0,0 +1,15 @@
+#!/usr/bin/env zsh
+# print 1 minute load average with tooltip for 1, 5 and 15 minutes
+# emit 3 classes: good, warning, critical
+
+local load_all=$(cut -d' ' -f1,2,3 /proc/loadavg)
+local load=${${(@s: :)load_all}[1]}
+print -l ${load} ${load_all}
+
+if [[ ${load} -gt $(( $(nproc) + 1 )) ]]; then
+    print critical
+elif [[ ${load} -gt $(nproc) ]]; then
+    print warning
+else
+    print good
+fi