[waybar] Rework nightlight

scripts/toggle-nightlight.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+# Script to disable for an hour or immediately continue wlsunset. 'Toggle'
+
+# Get current state
+pid=$(pgrep wlsunset)
+
+while getopts ":g" option; do
+        case "${option}" in
+                g)
+                        if [[ -z "${pid}" ]]; then
+                                state='active'
+                                tooltip='Turn off nightlight'
+                                class='activated'
+                        else
+                                state='inactive'
+                                tooltip='Turn on nightlight'
+                                class='none'
+                        fi
+printf '{"alt": "%s", "tooltip": "%s", "class": "%s" }' \
+                                "${state}" "${tooltip}" "${class}"
+                        exit 0
+                        ;;
+                *)
+                        echo 'Invalid option'
+                        exit 1
+                        ;;
+        esac
+done
+
+# Toggle
+if [[ -z ${pid} ]] ; then 
+        if [ "$( command -v wlsunset )" ]; then
+                notify-send 'Starting nightlight' --app-name='twm'
+                wlsunset -l 50.50 -L 4.00 -t 3000 -T 6500 &
+        else
+                notify-send 'Nightlight is not available'
+                exit 1
+        fi
+else
+        # Currently stop wlsunset but restart in an hour. 
+        kill ${pid}
+        notify-send 'Stopping sunset' 'Restarting in an hour'
+        at now +1 hours -f "${0}"
+fi